| DE3002182C2 | 1982-07-08 | |||
| EP0017262A1 | 1980-10-15 | |||
| FR1231955A | 1960-10-04 | |||
| FR1333156A | 1963-07-26 | |||
| US0918249A | 1909-04-13 | |||
| US3580634A | 1971-05-25 |
| 1. | Standing stool with adjustable seat fittings and of the typ which gives the user an upright, almost standing position, for i stance for use dunng work at an assembly belt and the like, wher the full mobility of the body and the assistance of the legs for movement of the body are required, characterized by the fact tha the seat (2) besides being adjustable in the height also is adju table by a turn about a transverse horizontal axis (21) and by a turn about a transverse horizontal axis (12) for adjustment of t seat in the ergonomically most suitable position, usually absolu horizontal, also in cases where the floor is uneven or sloping. |
| 2. | Standing stool according to claim 1 characterized by the fac that the seat fittings (3) consist of: a fastened horizontal support frame (3) at the frame of the chair (l) which in the end turning backwards is equiped with a bearing frame (9) for a intermediate shaft (lo) turned forward that is revolvable aboat a horizontal transverse axis (12) in the mentioned bearing frame the fact that the intermediate shaft in the end turned forward is connected with a toothened bar (14) which is led down through a recess (15) in the support frame the fact that the intermediate shaft can be fixed in proportion to the support frame in a number of various angularities by means of a pawl member (16) with an effective resilience. From a joggle tenon (17) in the middle of the support frame this is turned for¬ ward and in normal lock position it will resiliently mesh with th toothing of the beam (14a) the fact that the intermediate shaft in the end turning back¬ wards goes on in a hook turned downwards (13). An oblong bottom kracket of the seat (19) which is limited revolvable about the axis, i.e. about a transverse swivel axle (21), is hung at the in termediate shaft. the fact that the bottom kracket of the seat in the end turned backwards is equiped with a transverse placed downwards turning end piece (22) that is parallel to the hook of the intermediate shaft (13) and by means of two apposed placed regulating screws (23) put at the bottom of the end piece on a level with the hook is made for the purpose of locking the bottom kracket in various angularities in proportion to the remaining part of the seat fit¬ tings by assembling the regulating screws round the hook and the fact that the seat (2) itself, mainly in the shape of a stuffed saddle, is mounted at the bottom kracket of the seat. |
| 3. | Standing stool according to claim 1 characterized by the fact that the frame of the chair is designed as a one standard chair equiped with a foot with three or more legs (4). It is also characterized by the fact that the frame is with vertical adjust¬ ment and equiped with a pivot bearing (6) that optionally can be pivotal or locked when the chair is used. A. |
| 4. | Standing stool according to claim 3 characterized by the fact that the foot is equiped with adjustable shoes (7) so that it is not necessary to adjust the foot for an uneven floot by tilting. |
| 5. | Standing stool according to claim 1 characterized by the fact that the seat the shape of a saddle and is equiped with a support of the loin (2a) that is integrated. |
| 6. | Standing stool according to claim 1 characterized by the fact that there in connection to the seat mainly placed visibly at the bottom cracket of the seat (S), is placed a spirit level (24) that can be used by adjusting the seat, in exactly horizontal position. |
The invention concerns a standing-stool with adjustable seat- furnishing and more pecisely determined of the mentioned nature in the beginning to demand 1.
Known standing-stool of the nature question have in practice proved to cause sufferings of the back after having been used fo a long time. An examination made clear that the υroblems especia ly arise whe standing-stool are used on uneven or sloping founda tion, so that the user is forced to sit aslant, i.e. n attitude where back and legs are strained wrongly.
The aim of the invention is to show a better standing-stool which can be used under all conditions v/ithout any risk for injur of the back and at the same with optimum supporting-comfort. This is obtained according to the invention by making the seat adjus¬ table a s s mentioned in the charcterizing part af demand 1.
Ho matter how the floor is (uneven or sloping floor) the chair will be able to be adjusted with horizontal seat which is a con¬ dition of a cottect ergonomic support/sitting-position. A prefer¬ red version-form for the seat furnishing according to the inventi on is mentioned in demand 2. The seat furnishing is characterized by being robust, easily operated and safe. ?or tipping-free adjus tment of the chair-unde frame to the floor the chair feet are pro vided with regulating screws or adjustable shoes as mentioned in demand 4.
For the sake of the sitting comfort the seat can assording to the invention be worked out with an integral back or a lumbar sup port. This ad ite a more relaxed sitting position while back and loin are supported. By supplying the seat with a level as mentio¬ ned in demand 6 the horizontal adjustment of the seat can be con¬ trolled directly. The invention has to be explained in connec¬ tion with the drawing, where
fig. 1 shows a standing-stool according to the invention in sidepicture.
fig. 2 shows the seat furnishment seen slant from in front in perspective.
fig. 3 shows the seat from above.
fig. 4 shows the underfra e seen from above.
At the drawing 1 designates the frame of the chair 2 the seat, and 3 the adjustable fritings of the seat. The frame is composed of a foot of several legs (4) and a vertical centralpipestandard (5).
The standard is equiped with a pivot bearing (6) and a verti¬ cal a υ.3t ent mechanism (not shown at the drawing). The foot (4) is equiped with adjustable shoes (7).
In the shown form of construction at the drawing the fittings of the seat ( consists of an oblonghorizontal support frame (8) which is fastened at the top of the central pipestandard (5).
In the end that turns to the rear (the end of the seat) the support frame froms a bearing frame (9) with, two support members (9a and 9b), and between them an endwise intermediate shaft (lo) is hung. The intermediate shaft is to the purpose equiped with a welded transverse pivotshaft (1) which is placed pivotal between the two support members (9a and 9b). In this way the intermediate shaft (lo) gets revolvable in vertical plane about a horisontal transverse axlemarked with 12.
The intermediate shaft (lo) is in the frontend finished in a hook turning downwards (13) and is in the front equiped with a bar fastened with screws (14). The bar is formed as a segment of a circle with the centre in the swivel axle (12) and stretches through an oblong recess (15) in the support frame. The bar (14) is equiped with a number of sidercesses (14a) which give the beam a toothened shape.
At the topside of the support frame (S) o a level wit the ba.r a -na/l member with, an effective resilience (16) is assemb¬ led, "itli one of its ends this is fastened to a joggle tenon (17) °.t the sup-nort frame and it stretches out through a guideslot- member l ^ '. r -icfι is in the end of the supporting fittings that turns forward.
G-uideslot-member appears with an oblong guide slot (iSa) which nermits the pawl member a limited movement from side to side. In its normal position the pawl member is held by the elasticity towards one of the sides of the guide facing and in this posi¬ tion the pawl member intervenes locking in the side recesses (14a) of the bearm.
In this v/ay the intermediate shaft (lo) is kept locked. The lockinghold can be cancelled by displacing the pawl member to the opposite side of the guide facing, whereuOon the intermedi¬ ate shaft freely can be adjusted by a turn about the horizon¬ tal transverse axis (12).
On the intermediate shaft (lo) an oblong bottom kracket of the seat (19) is hung. With two bearing sittings (2o) it is re- volvably momted on the shaft. The bearing sittings (2o) are wel¬ ded on the underside of the kracket.
The swivel axle of the bottom kracket, which at the drawing is marked with 21, is at riςht aneles to the transverse (12).
The bottom kracket (19) is in the end turning backwards equi¬ ped with an end piece facing downwards (22) which is parallel to the hook of the intermediate shaft (13) along the outside of this, By means of two opposed placed regulating screws (23 " ^ at the end piece (22) on a level with the hook it can be fixed in various an?ularities in proportion to the end piece, that means with the bottom kracket og the seat in various angularities in proporti¬ on to the horizontal υlane.
In this way the two mutual perpendicular swivel axles 12 and 21 give the bottom kracket of the seat (19), and with that the seat that is assembled at the kracket (2), the possibility af ad¬ justment had in view.
By means of screws the seat is fastened at the bottom kracket. The seat almost has the shape of an enlarged bicycle saddle equi¬ ped with a heightened support of the loin (2a).
At the bottom kracket (19) behind the seat a spirit level (24) (Figure nr. 1) is assembled. It makes it possible to make a com¬ pletely axact adjustment of the seat in horizontal plane. For pro¬ tection of the spirit the end piece (22) is led a bit over the
plane of the bottom kracket, by which a shield of the spirit is produced.
The placing of the foot in proportion to the framefoot is sug¬ gested in figure nr. 4. It is noticed that the stool is equiped with five feet - four of them are turning backwards and to the sides. In this way a suitable free floor space is produced at the place where it is natural to support with the feet, at the same time as the stability backwards and to the sides is optimum.
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