Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CHAIR WITH A TABLE
Document Type and Number:
WIPO Patent Application WO/2003/015577
Kind Code:
A1
Abstract:
The present invention relates to a chair with a table, more particularly to a swingable desk, a foldable desk or a swingable and foldable desk having a separable desk splittable to the right and left direction being installed on a chair frame directing to the symmetrical structure, and the combined desk with chair under the present invention includes an opening and closing structure at least at one part of the separable desk so as to provide the comfortable and stable feeling in a psychological meaning, and is devised to open and close the separable desk conveniently for coming in and out from chair.

Inventors:
JUNG KWON-HA (KR)
Application Number:
PCT/KR2002/001523
Publication Date:
February 27, 2003
Filing Date:
August 09, 2002
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JUNG KWON-HA (KR)
International Classes:
A47C7/70; (IPC1-7): A47B3/14
Foreign References:
US4591206A1986-05-27
US4779884A1988-10-25
US4427232A1984-01-24
JPH11128024A1999-05-18
Attorney, Agent or Firm:
Kwang-ok KO. (Shinwon B/D 3F 648-15, Yeoksam-dong Gangnam-Gu, Seoul 135-911, KR)
Download PDF:
Claims:
Claims :
1. A chair with a table, comprising : a chair frame, a separable desk at least being combined to said chair frame, an opening & closing means at least being comprised for opening and restoring said separable desk so as to provide suitable space for coming in and out to user, and said chair with a table is characterized in that said opening & closing means is comprised with a swingable desk, a foldable desk having a fixed part and a rotatable part or a swingable & foldable desk.
2. The chair with a table as claimed in claim 1 further comprising : said separable desk being comprised is characterized in that one part is to be formed with said opening & closing means and the other part is to be formed without said opening & closing means.
3. The chair with a table as claimed in claim 1 further comprising : said separable desk being comprised is characterized in that one part is to be formed with said opening & closing means and the other part is also to be formed with said opening & closing means.
4. The chair with a table as claimed in claim 1 further comprising : said separable desk being comprised is characterized in that only one part is to be formed with said opening & closing means without constituting the other part.
5. The chair with a table as claimed in claim 1 or claim 4 further comprising: said swingable desk being comprised is characterized in that a swingable member is connected to a slant member.
6. The chair with a table as claimed in claim 5 further comprising : said swingable member is characterized in that it is designed to combine detachably to said slant member.
7. The chair with a table as claimed in claim 5 further comprising : said slant member is characterized in that it is designed to combine detachably to said chair frame.
8. The chair with a table as claimed in claim 5 further comprising : said slant member is characterized in that it is designed to form a vertical member.
9. The chair with a table as claimed in claim 5 further comprising : said slant member being comprised is characterized in that two front legs are connected by a connection member to form a Hshaped upper end.
10. The chair with a table as claimed in claim 1 or claim 4 further comprising: said swingable desk is characterized in that it is designed to include a restriction means for rotational scope.
11. The chair with a table as claimed in claim 1 or claim 4 further comprising: said chair with a table being comprised is characterized in that said separable desk having a sliding means for gap adjustment is to be slideable relative to said chair frame according to back and forth direction, or a seat having a sliding means for gap adjustment is to be also slideable relative to said chair frame according to back and forth direction.
12. The chair with a table as claimed in claim 1 or claim 4 further comprising: said chair with a table being comprised is characterized in that a supporting edge along the contact area of right and left separable desk is designed to form so that one part of said separable desk supports the other part of said separable desk.
13. The chair with a table as claimed in claim 1 or claim 4 further comprising: said chair with a table being comprised is characterized in that a locking device of separable desk for locking said separable desk is to be formed along the boundary between said left desk and said right desk.
14. The chair with a table as claimed in claim 13 further comprising : said locking device of separable desk is characterized in that it is designed to form an alternating structure having concave and convex portion to join one after another.
15. The chair with a table as claimed in claim 1 or claim 4 further comprising: said opening & closing means for said foldable desk is characterized in that it is designed to include a fixed part and a rotatable part.
16. The chair with a table as claimed in claim 15 further comprising : said fixed part or said rotatable part is characterized in that it is designed to form a groove for a desk cabinet.
17. The chair with a table as claimed in claim 15 further comprising : said foldable table being comprised is characterized in that it is designed to detachably combine with said chair frame.
18. The chair with a table as claimed in claim 15 further comprising : said foldable table being comprised is characterized in that said fixed part of said foldable desk is designed to combine directly at a lateral frame of said chair frame.
19. 18 The chair with a table as claimed in claim 15 further comprising : said foldable table being comprised is characterized in that said fixed part of said foldable table is designed to combine at a lateral frame of said chair frame through a desk rotating member.
20. A combined desk with foldable chair, comprising : a foldable chair frame, a separable desk at least being combined to said foldable chair frame, an opening & closing means at least being comprised for opening and restoring said separable desk so as to provide suitable space for coming in and out to user, and said combined desk with foldable chair is characterized in that said opening & closing means is comprised with a swingable desk, a foldable desk having a fixed part and a rotatable part or a swingable & foldable desk.
21. The combined desk with foldable chair as claimed in claim 20 further comprising: said separable desk being comprised is characterized in that one part is to be formed with said opening & closing means and the other part is to be formed without said opening & closing means.
22. The combined desk with foldable chair as claimed in claim 20 further comprising: said separable desk being comprised is characterized in that one part is to be formed with said opening & closing means and the other part is also to be formed with said opening & closing means.
23. The combined desk with foldable chair as claimed in claim 20 further comprising: said separable desk being comprised is characterized in that only one part is to be formed with said opening & closing means without constituting the other part.
24. A combined desk with wheel chair, comprising: a wheel chair frame, a separable desk at least being combined to said wheel chair frame, an opening & closing means at least being comprised for opening and restoring said separable desk so as to provide suitable space for coming in and out to user, and said combined desk with wheel chair is characterized in that said opening & closing means is comprised with a swingable desk, a foldable desk having a fixed part and a rotatable part or a swingable & foldable desk.
Description:
CHAIR WITH A TABLE Technical Field The present invention relates to a chair with a table, more particularly to a swingable desk, a foldable desk or a swingable and foldable desk having a separable desk splittable to the right and left direction being installed on a chair frame directing to the symmetrical structure, and the combined desk with chair under the present invention includes an opening and closing structure at least at one part of the separable desk so as to provide the comfortable and stable feeling in a psychological meaning, and is devised to open and close the separable desk conveniently for coming in and out from chair.

Background Art The present invention directed to devise a chair with a table. According to the prior art of the present invention as shown on Fig. 30, it shows that a fixed desk is attached on the right or the left part of a foldable chair. The combined desk having chair according to the prior art is also foldable simultaneously with the foldable chair frame. In order words, more specifically speaking, a seat being combined to the foldable chair frame is equipped with an interlocking linkage so that it makes available simultaneous folding procedure with the actuation of the seat member along the upper directional motion since the mutual interaction of the seat member is occurred with the motion of the interlocking linkage. But this kind of a foldable desk in the prior art has a problem in that it does not provide sufficient surface area for the working space due to the structural limit related to the single attachment of desk. If the size of the combined desk increase, the desk structure to combine with the chair frame according to the prior art would be unstable.

Disclosure of Invention The present invention relates to a chair with a table. More specifically, the present invention directed to devise a separable desk splittable into

one part or two parts, which is securely supported by a desk supporting member being attached on chair frame, and to comprise an opening & closing means for opening and restoring one part of the separable desk at least in order to provide suitable entrance space for coming in and out to user.

The opening & closing means for the separable desk under the present invention includes a restriction means for the rotational scope under the swing motion of the separable desk. The restriction means for rotational scope under the present invention mainly comprises a swingable member, and the swingable member is designed to restrict to rotate within the preset rotational range.

The combined desk with chair according to the prior art manifestly has a structural problem for increasing the surface area of desk. But nowaday, a user demands more spacious desk due to the common use of a notebook computer for an example. According to the present invention, the embodiments of the separable desk in various ways secures more spacious area by splitting the separable desk into two parts. Accordingly, the present invention provides sophisticated technologies in connection with the separable desk splittable into two parts in order to improve the deficiency of the prior art.

First of all, in order to devise a new mechanism for a separable desk having a chair according to embodiment of the present invention, one should inevitably encounter a problem regrading suitable space for coming in and out from the seat. Due to the above mentioned problem, a separable desk splittable into two parts with chair according to the present invention should be equipped with an opening & closing means locating at one part of the separable desk at least in order to provide the suitable space for coming in and out from the combined seat. Accordingly, depending on the structural equipment for the opening & closing means installed on the separable desk, the separable desk combined with chair would be classified as two kinds of operational type namely, a single operational desk type or a mutual desk operational type.

In order to accomplish the structure of opening & closing means according to present invention, structural embodiments of a swingable desk, a foldable desk or a swingable and foldable desk are introduced. And so as to store the combined separable desk within minimized space or to move conveniently, the combined

separable desk is detachably connected with chair frame. Furthermore so as to fit with an user's body at the sitting position or any necessity, the separable desk having a sliding means for gap adjustment is to be formed as slideable relative to a chair frame according to back and forth direction, or a seat having a sliding means for gap adjustment is also to be formed as slideable in connection with a chair frame according to the back and forth direction.

A supporting edge being formed along the boundary of right and left separable desk and a locking device thereof are configured so as to enhance the stability of the separable desk and the coupling of the right and left desk of the separable desk.

The locking device for the separable desk is classified into two parts namely, a left locking device and a right locking device. The configuration of the locking device is designed to have an alternating structure and to join one after another. A typical example of the above mentioned locking device is a concave and convex shape along the boundary of the supporting edge. The shape of concave and convex is formed along the boundary of the supporting edge at the right and left separable desk for the joint of alternating combination as a type of male and female junction.

A swingable desk, a foldable desk or a swingable and foldable desk related to the structure of opening & closing means under the present invention would be described through various illustrations. Firstly, the terminologies for the common use under the present invention hereinafter, for examples a slant member, a swingable desk, a foldable desk and a swingable and foldable desk will be defined.

The slant member under the present invention is designated to define a protrusive member which is tightly combined to a leg, a backboard or a post of a chair frame.

Moreover, the slant member defined hereinafter as the protrusive member means all protrusively declined member relative to the horizontal line of the chair seat, but the declination angle of the slant member relative to the horizontal line contains all angles including horizontal and vertical.

The slant member designed to configure at a lateral part of chair frame, or a seat bottom of chair frame or to be formed on a behind part of backboard chair.

The most desirable and popular configuration of the slant member is devised to combine at a bottom seat and designed to configure protrusively to the lateral part of chair frame.

In addition, the structure of the slant member can be devised so as to detach easily from chair frame. The main reason for the detachable function of the separable desk from chair frame is that an user wants to use the chair only without using of the separable desk depending on the usages.

Another advantage for the detachable function of the separable desk would bring the reduction of delivery fee, and furthermore the detachable function of separable desk from chair frame facilitates the movement itself.

Due to the detachable function of the separable desk, only the separable desk can be replaceable when the desk is damaged without the whole exchanging of the combined desk with chair.

As a special form of the slant member, the slant member is referred as a vertical member when the slant member make a right angle.

For this special case, the rotational axis of a swingable member make a right angle also. Accordingly a desk supporting member which supports the combined desk rotates along the horizontal surface pivoting the vertical axis.

For an example, the representative illustration for the formation of slant member relates to a H-shaped front leg being formed on chair frame.

Two front legs are to be shaped as a linear or a curvilinear form and these two legs are connected by a coupling member to form a H-shaped appearance.

Two rear legs are connected directly to the above mentioned coupling member or the front legs and swingable members are attached on the upper edge of the H-shaped front legs for the rotational movement of separable desk.

A swingable desk according to an embodiment of the present invention is directed to provide an operational facility for coming in and out from chair seat in a convenient way to user. And the swingable desk is also aimed to provide and to define a structural member to support the separable desk and to rotate the desk supporting member as an axis of the slant member.

Of course, the swingable desk can be devised to attach and detach from the slant member easily and to work with the operation of a swing member being

combined on the slant member.

Analogous to the above mentioned swingable desk, a foldable desk according to an embodiment of the present invention is directed to provide an operational facility for coming in and out from chair in a convenient way to user.

And the foldable desk is also aimed to provide and to define a structural member to comprise a fixed part and a rotatable part. These two parts are connected with a hinge member in order to broaden the desk surface in maximum by spreading the rotatable part from the fixed part.

A groove for a desk cabinet can be formed at the fixed part or the rotatable part of the foldable desk. Depending on the usages, the foldable desk can be combined only one side of chair frame or both sides of chair frame in order to use the maximum area of the foldable desk.

For this case, these two separated parts are desirable to meet that two edges are contacting at the center position when two rotatable parts are spreaded.

Of course, same as for the swingable desk, the foldable desk can be devised to attach and detach from the slant member easily too.

The above mentioned fixed part of the foldable desk is directly attached on the lateral part of chair frame or indirectly attached on the lateral part through the desk rotating member.

In the case of the directly attached on the lateral part of chair frame, the opening and closing for the separable desk is achieved by the folding operation of the rotatable part onto the fixed part. In the case of the indirectly attached on the lateral part through the desk rotating member, the opening and closing for the separable desk is achieved by the folding operation of the rotatable part onto the fixed part or the rotational operation of the desk rotating member.

Analogous to the above mentioned swingable desk or the foldable desk, a swingable & foldable desk according to an embodiment of the present invention is directed to provide an operational facility for coming in and out from chair in a convenient way to user. And the swingable & foldable desk is also aimed to provide and to define a structural member which has a swingable member attached on the slant member with the foldable desk in order to support the separable desk and to rotate the foldable desk as an axis of the slant member.

Of course, for this case, the swingable member can be devised to attach and detach from the slant member easily, and further the slant member also can be attached and detached from chair frame too.

Summarizing embodiments of the present invention, the illustrative applications under the present invention can be classified roughly as three different types of aspect.

Firstly, there is a type for the separable desk which can be divided into two desk parts, and only one desk part has the structure of opening & closing means being installed on the chair frame without having the opening & closing on the other part.

Secondly, there is a type for the separable desk which can be divided into two desk parts, and both desk parts have the structure of opening & closing means being installed on the chair frame.

Thirdly, there is a type for the separable desk which has only one desk part, and the desk has the structure of opening & closing means being installed on the chair frame.

The above mentioned three aspects of the present invention can be generally applied to the various system regarding a chair having the swingable desk, a chair having the foldable desk, a chair having the swingable & foldable desk, a foldable chair having the swingable desk, a foldable chair having the foldable desk or a foldable chair having the swingable & foldable desk.

In addition to the above mentioned without varying the embodiment of the present invention, these three kinds of aspect under the present invention can be also widely applied to the various technologies regarding the attach & detach technique for the swingable member, the attach & detach technique for the slant member, the combination technique of the slant member to the swingable member, technique of the restriction means for rotational scope with the swingable member, technique of the sliding means for gap adjustment. technique for comprising the supporting member, and the locking and combination techniques for the separable desk.

The present invention can be applied for the various types of chair without varying the embodiment of the present invention which relates to a desk supporting

member. Including a foldable chair as mentioned above, It can be also applied to any kind of chair for examples, a wheel chair, an electrically operated chair and an ordinary chair. Furthermore a table cabinet can be formed as a sliding type on the below portion of the separable desk to enhance the convenience of user.

The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the present invention.

Brief Description of Drawings Fig 1 is an illustrative view for a swingable desk being formed as a separable desk.

Fig 2 is an explanatory drawing for Fig. 1 Fig 3 is an illustrative view for a swingable desk being formed on a foldable chair.

Fig 4 is an illustrative view of a foldable chair having a swingable member being installed on the right desk and the left desk both.

Fig 5 is an illustrative view of a swingable desk having an attachable slant member.

Fig 6 is an illustrative view of a restriction means for rotational scope for a swingable member.

Fig 7 is a structural view of a swingable desk having a vertical member under the embodiment of slant member.

Fig 8 is a structural view of a swingable desk being formed as a type of H- shaped front leg.

Fig 9 is a structural view of a swingable desk being formed on a wheel chair.

Fig 10 is an illustrative view for a locking device of the separable desk under the present invention.

Fig 11 is a combined state of the locking device related to Fig 10.

Fig 12 is an illustrative view of a convex and concave shape of locking

device.

Fig 13 is an illustrative view of a sliding means for gap adjustment according to the present invention.

Fig 14 is an illustrative view of a foldable desk according to the present invention.

Fig 15 is a schematic state view for the practical use of a foldable desk related to Fig 14.

Fig 16 is a sectional state view for the practical use of a foldable desk related to Fig 14.

Fig 17 is a schematic state view under the folding state of a foldable desk related to Fig 14.

Fig 18 is a detail explanatory view of a foldable desk showing the spreading state of the rotatable part 29 of Fig 17.

Fig 19 is a schematic state view under the vertical storage state of a foldable desk.

Fig 20 is a structural view of a foldable desk showing a groove for a desk cabinet.

Fig 21 is a schematic state view for the practical use of a foldable desk being formed a groove for a desk cabinet related to Fig 20.

Fig 22 is a structural view of a pivotal desk having a centering pin.

Fig 23 is a schematic state view for the practical use of the pivotal desk related to Fig 22.

Fig 24 is a structural view of a foldable desk showing a hinge member being formed at the central position of chair frame.

Fig 25 is a structural view of the separable desk having a supporting edges according to the present invention.

Fig 26 is an illustrative view of a swingable member according to the present invention.

Fig 27 is an illustrative view of a foldable chair having swingable and foldable function.

Fig 28 is an illustrative view of a swingable and foldable desk.

Fig 29 is an explanatory view showing the vertical storage state of a

fordable desk.

Fig 30 is a combined desk having chair according to the prior art.

Best Mode for Carrying Out the Invention Fig 1 is an illustrative view for a swingable desk being formed as a separable desk.

As shown on the Fig. 1, a book supporting panel 5 and a cup hole 6 are devised to form on the surface of separable desk with a left desk 2, and the left desk is supported by a supporting member 7 which is connected to a slant member 4 by a swingable member 8.

The left desk and the supporting member of the left desk both are swingable about the axis of swing (S) by the swingable member.

Samely the right desk is to be supported by a supporting member 7 of the right desk and the supporting member both is swingable about the axis of swing (S) by the swingable member.

The boundary between the left desk and the right desk is designed to form a supporting edge so that one part of desk supports the other part of desk respectively.

At least one desk part of the separable desk splittable into the right or left direction is equipped with the swingable member in order to facilitate user's coming in and out from chair. Of course, it would be more convenient to user if the both desk are designed to equip the swingable member.

Fig 2 is an explanatory drawing for Fig. 1.

As shown on the figure 2, one can realize that a supporting edge 9 is devised to form along the boundary of the right desk and the left desk, and the supporting member of the right desk is swingable about the axis of swing (S) with a swingable member of the right desk.

Fig 3 and Fig 4 are illustrative views for a swingable desk being formed on a foldable chair.

Fig 3 shows an illustrative view for a foldable chair in which only the left desk is working but the right desk is not operating for the swingable motion.

Fig 4 shows an illustrative view of a foldable chair in which both of the left desk and the right desk are working for the swingable motion.

Fig 5 is an illustrative view of a swingable desk having an attachable slant member.

As shown on the figure 5, the slant member 4 according to the present illustration is designed to attach or detach on the seat of chair frame depending on usages.

Particularly, a swingable member 8 being rotatively combined to a slant member is devised so as to restore its original position in a smooth way using air- pressure or hydraulic pressure.

Fig 6 is an illustrative view of a restriction mean for rotational scope for the swingable member.

A restriction means for rotational scope under the present invention is defined to restrict the rotational range of the swingable member 8 within the preset scope. The detail constitution comprises an elongate hole 10 and a protrusion member 11 being installed within the elongate hole so that the rotation of swingable member is restricted within the preset range.

Fig 7 is a structural view of a swingable desk having a vertical member under the embodiment of slant member.

As mentioned, a vertical member 15 as a special form of a slant member is referred when the slant member make a right angle. For this special case, the rotational axis of the swingable member 12 make a right angle also. Accordingly the desk supporting member 13 which supports the combined desk rotates along the horizontal surface pivoting the vertical axis.

If the vertical member is adapted for the slant member as a special case, it is advantageous that it provides the horizontal rotating motion of desk and accordingly it is no necessary for shifting or moving things on the desk while coming in and out from chair.

Fig 8 is a structural view of a swingable desk being formed as a type of the H-shaped front leg.

Two front legs 17,18 are designed to configure as a linear or a curvilinear form, and these two legs are connected by a coupling member 16 to form a H-

shape appearance. In this case, in order to enhance the stability and durability, a bottom coupling member 19 to put user's foot is formed at the bottom portion of the H-shape front legs. Two rear legs are devised to connect directly to the above mentioned coupling member 16 or the front legs and the swingable member 8 are detachably attached on the upper edge of the H-shaped front legs 17,18 for the rotational movement of separable desk.

Fig 9 is a structural view of a swingable desk being formed on a wheel chair.

The right desk and left desk are formed at the front direction of a wheel chair 20 and these separable desk are openable with the installation of the swingable member 8.

Fig 10 is an illustrative view for a locking device of the separable desk under the present invention.

As shown on the figure, the locking device 21,22 of the separable desk is formed along the boundary between the left desk 2 and the right desk.

The locking device of separable desk comprises a left locking device 21 and a right locking device 22. The left locking device 21 is combined with the right locking device 22 resulting the edge can be covered to the edge of the right desk. Similarly, the right locking device 22 is combined with the left locking device 22 resulting the edge can be covered to the edge of the left desk.

Fig 11 is a combined state of the locking device related to Fig 10.

The locking device for the separable desk is devised to lock alternately one after another along the boundary between the left locking device 21 and the right locking device 22.

As shown on the figure, if the left desk 2 are forced to press downwardly by a weight, the left locking device 21 being formed on the bottom of the left desk reduces the forced weight by distributing the weight to the right desk 1 through the alternating combination of the locking devices. Samely, if the right desk 1 are forced to press downwardly by a weight, the right locking device 22 being formed on the bottom of the right desk reduces the forced weight by distributing the weight to left desk 2 through the alternating combination of the locking devices.

Fig 12 is an illustrative view of a convex and concave shape of locking

device.

As an illustration of the embodiment of the locking device under the present invention, a convex and concave shape of locking device 23,24 is devised on the separable desk having a plurality of convex portion and concave portion respectively for making the alternating combination of the locking devices. This convex and concave shape of locking device being formed on the left desk 4 and the right desk 7 is designed to combine as a male-female combination.

Fig 13 is an illustrative view of a sliding mean for gap adjustment according to the present invention.

It is desirable that the desk position can be adjustable along the back and forth direction depending on physical condition of user.

For this purpose, a sliding member 26 is formed at the below of the separable desk 25. At the bottom of the sliding member, a slide support member 27 is to be formed for the sliding operation of the sliding member.

The above mentioned slide support member is secured at the bottom of the separable desk with a desk fixing member.

Without varying the embodiment of the desk gap adjustment relative to a user's position seated on chair as mentioned the above, the present invention also includes an application of the sliding member being installed on the bottom of seat for the slidable adjustment between the separable desk and the seat of chair.

Fig 14 is an illustrative view of a foldable desk according to the present invention.

A foldable desk according to an embodiment of the present invention is directed to provide an operational facility for coming in and out from chair in a convenient way to user, and the foldable desk is also aimed to provide and to define a structural member to comprise a fixed part 28 and a rotatable part 29.

The above mentioned two parts are connected with a hinge member 30 in order to broaden the desk surface in maximum by spreading the rotatable part from the fixed part.

The above mentioned fixed part is connected to a lateral frame of chair 31 through a desk rotating member 32. The above mentioned desk rotating member 32 is rotatable relative to the lateral frame of chair and a cushion 33 is formed at

the inner part of the rotating member. Of course, the fixed part can be connected directly to the later frame of chair without passing the desk fixing member.

In the case of using the separable desk, one can broaden the desk surface by spreading the rotatable part 29 and in the case of closing the separable desk, one can narrow the size of desk by folding the rotatable part 29.

The foldable desk according to the present invention can be formed at only one part of chair frame or also can be formed at the both parts of chair frame without varying the embodiment of the present invention.

Fig 15 is a sectional state view for the practical use of a foldable desk related to Fig 14.

The surface area of the foldable desk increases with the spreading of the rotatable part 29. The foldable desk is desirable to make a horizontal comparing with the formation of seat. In addition, in the case of only one foldable desk installation to chair frame, one can also find the enough space for the surface area of desk with spreading of the rotatable part 29.

Fig 16 is a sectional state view for the practical use of a foldable desk related to Fig 14.

The two rotatable part 29 are formed to contact each other.

In order to support the left rotatable part by the right rotatable part and to support the right rotatable part by the left rotatable part respectively, a supporting edge 34 is designed to form along the contact portion of the above mentioned rotatable parts.

The supporting edge 34 is formed at one of the rotatable parts as shown on the figure but the constitution of the supporting edge can be diverse with the rotatable part 29 without restricting the embodiment of the present invention.

Fig 17 is a schematic state view under the folding state of a foldable desk related to Fig 14.

The length adjustment along the back and forth direction between user and desk can be accomplished the sliding motion of a fixed part 28 through a slider 39 being connected to a desk rotating member 32 As shown on figure, the desk rotating member includes a lateral frame of chair and a horizontal groove 36 and a vertical groove 35 as coupling grooves are

formed on the above mentioned lateral frame.

A coupling device 38 being installed resiliently by a spring 37 is formed in the desk rotating member 32. The above mentioned coupling device is devised to fit with the above mentioned coupling grooves so as to fix a the desk rotating member at a certain position of the lateral frame.

Fig 18 is a detail explanatory view of a foldable desk showing the spreading state of the rotatable part 29 of Fig 17. This demonstrates the spreaded state for the actual use of desk.

Fig 19 is a schematic state view under the vertical storage state of a foldable desk.

In the case of storage for the foldable desk as shown on the figure, the foldable desk after folding is kept as a horizontal way or kept beside of the lateral position of chair frame as a vertical way.

In order to store the foldable desk beside of the lateral position of chair frame as a vertical way, the desk rotating member after turning to the 90 degree is forced to couple at the vertical groove 35 with the decoupling state of the coupling device 38 at the horizontal groove 36.

This type of storage for the foldable desk means that the foldable desk is designed to kept at the lateral position of chair after folding the desk.

At this case of the vertical storage, the cushion 33 formed on the desk rotating member is located directing to upward so that the cushion can be used for the stay of arm.

Fig 20 is a structural view of a foldable desk showing a groove for a desk cabinet.

A groove 40 for keeping things or utensils can be formed at the rotatable part 30 of the foldable desk as shown on the figure. Accordingly, the groove for a desk cabinet can be shaped at the fixed part or the rotatable part of the foldable desk.

Fig 21 is a schematic state view for the practical use of a foldable desk being formed a groove for a desk cabinet related to Fig 20.

Since the spreaded surface in upper direction of the rotating portion 40 forms a flat surface 41 after spreading the foldable desk, the foldable desk with the

embodiment of the desk cabinet is also useful for the purpose of the desk use.

Fig 22 is a structural view of a pivotal desk having a centering pin.

The pivotal desk as shown on the figure comprises a rotating part 42 and fixed part with a centering pin 43 so that the rotating part can be rotated about the centering pin.

Fig 23 is a schematic state view for the practical use of the pivotal desk related to Fig 14.

The foldable desk according to the present invention can be formed at only one part of chair frame and also can be formed at the both parts of chair frame without varying the embodiment of the present invention.

The pivotal desk as shown on figure is related to the spreaded state of the rotating part about the centering pin. Without varying the embodiment of the pivotal desk, the separable desk can be comprised that one part is to be formed as a foldable desk and the other part is a pivotal desk or both parts are to be formed with the pivotal desk or the foldable desk separatively.

Fig 24 is a structural view of a foldable desk showing a hinge member being formed at the central position of chair frame.

Hereinbelow, a single foldable desk is defined as a foldable desk which is comprised with only one set of a fixed part and a rotatable part along the right & the left-lateral frame.

As an illustration of the present embodiment, a desk cabinet can be formed at the below the fixed part as shown on the figure 24.

Fig 25 is a structural view of the separable desk having a supporting edge according to the present invention.

A supporting edge 45 along the boundary between the right and the left desk is devised to form so that it supports the separable desk cooperatively. And a locking device for the separable desk is devised to enhance the stability of the supporting edge and locking function of the right and the left desk.

A locking device for the separable desk can be devised as various ways. A convex and concave type of locking device as shown on figure 12 is introduced for an example. For another example as shown on figure 25, a junction groove 46 is formed on one part of the separable desk so that a junction protrusion 47 is

combined to the groove for making the locking device for the separable desk.

Fig 26 is an illustrative view of a swingable member according to the present invention.

A swingable member is connected to a slant member being installed on chair frame and it is devised to rotate about the axis of the slant member. And a desk supporting member being connected with the separable desk supports the separable desk with the above mentioned swingable member.

The most representative illustration as a type of penetration is related to the figure 16 (A). The slant member 50 penetrates the swingable member 51 as shown on the figure. A support ring 52 is equipped at the bottom of the slant member so that the swingable member is not sliding-down from the slant member by its own weight. A desk supporting member 53 is connected to the lateral part of the swingable member.

The most representative illustration as a type of non-penetration is related to the figure 16 (B). In this case, a swingable member 55 having a shape of cap is formed at the end part of a slant member 54 resulting the non-penetration of the slant member. A desk supporting member 53 is connected to the lateral part of the swingable member.

A restriction means for rotational scope for the swingable member can be devised for the limit of rotational motion related to the swingable member.

In addition, a swingable member is devised as an assembly type so as to attach and detach with a locking tool, for an example a bolt and nut, conveniently to a slant member.

Fig 27 is an illustrative view of a foldable chair having swingable and foldable function.

A separable desk 1,2 is formed at the right frame and the left frame of the foldable chair respectively, and a swingable member is connected to each part of the separable desk 58 through a desk supporting member 60.

The above mentioned swingable member is rotatively connected to the frame of foldable chair. For this case, a desk supporting member is designed to equip with a folding member in order to make it foldable with the folding process of the foldable chair frame.

The folding member, as an illustration, a spring can be resiliently installed between the desk supporting member and the swingable member to support or fold the separable desk through the actuation of the supporting member.

In addition, for another example, a latch gear can be formed for an illustration of the folding member.

As for an opening & closing means for coming in and out from chair, a desk rotating member as shown on the figure 14 or the rotational motion by a swingable member also can be possible.

Accordingly, the desk rotating member 59 being installed between a desk 1,2 and a desk supporting member 60 can make a gate for sitting by the rotational actuation of the desk rotating member.

The rotation of separable desk, according to the present embodiment related to the figure 27, can be possible with the rotational motion of the desk rotating member or the swing motion of the swingable member.

Fig 28 is an illustrative view of a swingable and foldable desk.

In order to facilitate the operation of the opening & closing desk, a combined embodiment in connection with a swingable desk and foldable desk can be devised.

A foldable desk having a swingable member is provided for the swingable desk and foldable desk as shown on the figure. The above mentioned swingable member is devised to connect and to rotate about a slant member. In this case, the swingable member also can be comprised to attach and to detach conveniently from the slant member.

As another method for the combination, of course, a slant member having a swingable member can be comprised to attach and to detach from a chair frame.

In detail, a foldable desk 61, 62 having the fixed part and the rotating part is connected to a desk supporting member 63 and the desk supporting member is designed to combine a swingable member 64. The swingable member is rotatively combined to a slant member 65 being located on the lateral side of chair frame.

Fig 29 is an explanatory view showing the vertical storage state of a foldable desk.

A foldable desk having a groove 40 for desk cabinet is supported by a

desk rotating member 32 and comprised to be rotatable.

The foldable desk is forced to rotate with the rotational actuation of the rotating member 32 and designed to store at the lateral position of chair frame along the vertical way with the perpendicular of the foldable desk.

The cushion formed on the desk rotating member directing in the upward direction at the vertical storage state can be used for the stay of arm.

Fig 30 is a combined desk having chair according to the prior art.

The prior art discloses a combined desk 41 attached on a right or a left part of a foldable chair. The combined desk according to the prior art is also foldable simultaneously in connection with the foldable chair. In order words, more specifically speaking, a seat combined to the foldable chair equipped with an interlocking linkage 42 makes available simultaneous folding mechanism with the actuation of the seat member of chair into the upper directional motion since the interaction of the seat member is achieved with the member of interlocking linkage.

But this kind of a foldable desk in the prior art has a problem in that it does not provide sufficient area for working space due to the lack of symmetrical structure. If the size of desk increase, the structure of desk with a chair according to the prior art would be unstable. Furthermore this kind of prior art obviously restricts the coming in and out from chair because there is no functional structure for opening & closing of the combined desk.

Industrial Applicability A chair with a table according to the present invention is devised to provide the maximized area of the separable desk and two separable desk directing to the symmetrical structure, and moreover to designed to provide comfortable and stable feeling in the psychological meaning by the structural constitution in which one part of the separable desk at least is devised to open and close the separable desk conveniently for coming in and out to user from chair.