MATERIALS FOR WAIST MEMBER OF PANTS TECHNICAL FIELD The present invention relates to waistband material of pants, and more particularly, to a waistband material of pants which can prevent the pants from sliding down as a belt inserted at upper portion of the pants is tightened.

BACKGROUND ART Recently, the inside panel and the outer panels of pants are made of various woven materials including synthetic fiber. As developing the materials for clothing, the styles of a traditional garment are variously designed.

In general, a belt is positioned at the waistband to tighten, thereby preventing the pants from sliding down. Since the pants are sold to a consumer with its predetermined waistband size, the consumer often must repair the waistband size of the pants to his/her waist size.

In order to resolve the problem of repairing the pants size and consuming the cost therefor, a flexible size pants is disclosed in the Korean Utility Model, Registration No. 20-0208667.

As shown in Figure 1, the prior art waistband material includes a waistband 100 of a pants in which a belt is inserted into a plurality of belt holding loops. The lower portion of the waistband 100 is sewn to the top portion of the pant leg panel formed pocket 30.

The waistband panel 100 includes a moveable waistband 10 of front panel of the pants and a fixable waistband panel of rear panel of the pants. A sliding band 12 is extended at the rear panel of the moveable waistband panel 10 so that

the rear panel of the moveable waistband panel 10 slides within the inside of the fixable waistband 20. Therefore, the sliding band 12 is sliding within the operation space of the inside of the fixable waistband 20.

The lower portion of the sliding band 12 is separated from the pant leg panel 200. The rear end of the sliding band 12 is sewn to one end of a waist size elastic member 14. The other end of the waist size elastic member 14 is sewn to one end of the fixable waistband 20 in the inside of the operation space 22.

Both ends of the waist size elastic member 14 are sewn to elastic limiting bands so that it limits the length of the waist size elastic member 14.

A center of a guiding band 24 is positioned at one of the sling band 12 so that it guides the sliding band 12, the waist size elastic member 14 and the elastic liming member 14 to smoothly move.

A stay 18 is formed in the inside of the moveable waistband 10 to maintain complete appearances of the moveable waistband 10 and the sliding band 12. The lower portions of the moveable waistband 10 and the fixable waistband 20 are sewn to the upper portion of the pant leg panel 200. Also, the upper portion of the pant leg panel 200 is sewn to the inside panel 34 and an outer side panel 32 of the pocket.

The upper portion of the outside panel 32 positioned in the inside of the pocket 30 is sewn to the lower portion of the waistband 100 together with the upper portion of the pant leg panel 200. But the inside panel 34 is separated from the pant leg panel 200 with a predetermined length from the end portion of the fixable waistband 20 toward the front of the pants 1, or a length that the sliding band 12 is extended when sliding. Also, a pocket elastic member 36 is sewn at the upper portion of the pocket around waist.

The inside panel 34 of the pocket is separated from the outer panel 32 of the pocket. The upper portion of the inside panel 34 is connected to the pocket elastic member 36. The upper portion of the inside panel is sewn to one side end of a supporting elastic member 38. The other end of the supporting elastic member 38 is sewn to the upper portion of the inside of the moveable waistband 10 and fixed to the inside of the waistband 100.

A supplementary cloth 40 is sewn to the moveable waistband 10 and the fixable waistband 20 which directly contact to user's waist. But the supplementary cloth 40 is cut off the front and rear portions of the end portions of the fixable waistband 20 with respect to the end portion with a predetermined distance. After cutting off, the supplementary elastic member 42 is sewn to both ends thereof.

The operation of the prior art flexible size pants will be explained below : The moveable waistband 10 of the flexible size pants 1 is properly adjusted regardless of the user's waist size change even when the user's waist size is increased.

Namely, an exceeding length of user's waist size applying to the moveable waistband 10 makes the sliding band 12 positioned at the operation space 22 of the fixable waistband 20 pull toward the front of the pants 1, thereby the waist size elastic member 14 sewn at the end of the sling band 12 is extended to the front side of the pants with a predetermined length.

As the pocket elastic member 36 of the upper end of the inside panel 34 of the pocket is extended as much as the length that the waist size elastic member is extended to the front of the pants, the inside panel 34 of the pants is also extended to the front of the pants 1.

Also, the supplementary elastic member 42 is extended as much as the

length the waist size elastic member is extended. Therefore, the flexible size pants does not tighten the user's waist.

If the user's waist is increased with a relatively larger, the expansion of the waist size elastic member 14 is limited by the elastic limiting band sewn to both ends of the waist size elastic member 14. Then, the user must buy another pants larger than his/her currently wearing pants. Here, the waist size elastic member 14 of the end of the sliding band 12 is elastic from the fixable waistband 20.

The prior art pants 1 allow the user's waist to increase within 3 to 4 inches without pressuring his or her waist.

But the prior art flexible size pants is complicated in its structure such that it is very difficult to sew the cloth materials. Therefore it has disadvantages in that it makes the fabrication be worse and decrease the productivity.

Also the prior art flexible size pants has disadvantages in that, as the pocket elastic member 36 is elastic, creases are generated on the inside panel 34, the outer panel 32 and the pant leg panels corresponding thereto such that its appearance makes worse.

DETAILED DESCRIPTION OF THE INVENTION Therefore in order to solve the conventional problems, the present invention is to provide waistband materials of pants having a simple structure such that it can be easily fabricated, improve its productivity, and exclude creases or wrinkles even if the waist size of the pants is elastic.

In order to achieve the above object, there is provided a waistband material of pants, comprising: pant leg panel (6) formed by sewing left and right sides of front and rear panels (2) (4), upper portions of the left and right sides of

the front and rear panels are sewn in a form of partially cleave ; pocket panel (16) sewn to be expanded on the cleaves of the left and right sides of the front and rear panel (2) (4) forming the pant leg panel (6), wherein upper portion of the front panel (12) forming the pocket panel (16) is sewn to upper portion of the left and right side front panel (2) of the pant leg panel (6); first waistband outer panels (26), each of which is sewn to upper portion of the left and right side rear panel 4 of the pant leg panel (6) ; second waistband outer panel (24) expanded to the first waistband panel (26), a central hole (H1) is formed between the first waistband panel (26) and the second waistband panel (24), and end hole (H2) is formed at its end; wherein the upper portion of the rear panel (14) of the pocket panel (16) is sewn to lower portion of the waistband outer panels (24) (26) sewn to be expanded to the upper portion of the left and right side rear panel of the pant leg panel (6); first waistband inside panel (34) sewn to be expanded to the first waistband outer panel (26) and the second waistband outer panel (24) as a state penetrated so that end penetrating hole (H2) of the first waistband outer panel (26) and the second waistband outer panel (24) are corresponded each other; third waistband outer panel (22) sewn to the upper portion of the front panel (12) forming the upper portion of the left and right side front panel (2) and the pocket panel (16) of the pant leg panel with separating from the first and second waistband panels (24) (26); second waistband inside panel (32) sewn to be expanded to the third waistband outer panel (22); outside elastic members (44), each of both ends of the outside elastic members is expandably sewn to the first waistband inside panel (34) and the third waistband outer panel (22) with penetrating the central hole (H1) ; and inside elastic members (42), each of both ends of the inside elastic members is sewn to be expanded to the first waistband

inside panel (34) and the second waistband inside panel (32) with penetrating the end hole (H2).

Preferably, the outside elastic member (44) puts rubber band (46) expanded from the first waistband inside panel (34) into contact with outer member 48 expanded from a gap between the third waistband outer panel (22) and the second waistband inside panel (32), so that it can expand.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

In the drawings: FIG. 1 is a partially cut perspective of the waistband materials of the prior art pants ; FIGS. 2 and 3 are partial side views of the waistband materials of the prior art pants according to the operation states, respectively; FIG. 4 is a partially cut perspective view for showing the waistband materials of pants according to the present invention; FIG. 5 is a cross-sectional view of the connecting means of the waistband materials of pants with respect to A-A of FIG. 4; and FIG. 6 is a partially cross-sectional top view showing the structure of the waistband materials of pants according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 4 to 6, the preferred embodiment of the present invention will be explained below : As shown in FIGS. 4 and 6, the waistband materials of the pants according to the present invention include a pant leg panel 6 having a front panel 2 and a rear panel 4 in which the right and the left sides of the front panel and of the rear panel 2 and 4 are sewn to each other; pocket panel 16 having another front panel 12 and another rear panel 14 which are extended from cleaves of the right and the left sides of the front and rear panels 2 and 4; a plurality of waistband outer panels 22,24 and 26; a plurality of waistband inside panels 32 and 34; a plurality of outer elastic members 42; and a plurality of inside elastic members 44.

Namely, when the left and the right sides of the front and rear panels 2 and 4 are sewn to form a pant leg panel, some portions of the upper ends of the left and the right sides of the front the rear panels 2 and 4 are not sewn to form the pockets. Namely, the portions (cleavages) not sewn are connected the pocket panels 16 and become the opening of the pockets.

Namely, when the pocket panels 16 are sewn to be expanded to the cleaved portions of the left and right sides of the front and the rear panels 4 and 6 forming the pant leg panel 6, the upper portion of the front panel 12 of the pocket panel 16 is sewn to the upper portion of the left and right sides of the front panel 2 of the pant leg panel 6. Also, the upper portion of the rear panel 14 of the pocket panel 16 is sewn to the lower portion of the waistband outer panels 24 and 26 expanded from the left and right sides of the rear panel 4 of the pant let panel 6.

Further, with folding inside and outside panels 14 and 12, one end of the pocket panel 16 is sewn to be inserted between the left and right inside panels and

the left and right outside panels which are forming the pant leg panel 6.

Meanwhile, each of the waistband outer panel 26 and another waistband outer panel 24 separated from the waistband outer panel 26 is sewn in the upper portion of the left and right rear panels 4 of the pant leg panel 6 and in the upper portion of the outside panel 14 of the pocket panel 16 sewn to be expanded to the upper portion of the left and right rear panel 4.

Also, a waistband inside panel 34 is expandably sewn to the waistband outer panel 26 and to another waistband outer panel 24, in which a central hole H1 and end portion hole H2 are included between the waistband outer panel 26 and another waistband outer panel 24.

In addition, as explained above, with separating the waistband outer panels 24 and 26, another waistband outer panel 22 and the waistband inside panel 32 are sewn to the upper portion of the front panel forming the upper portion of the left and right front panel 2 of the pant leg panel and the pocket panel 16.

With penetrating the central hole H1, each of both ends of the outside elastic members 44 is expanded to the waistband inside panel 34 and to another waistband outer panel 22.

Another waistband inside panels 32 are expandably sewn to another waistband outer panels 22, with penetrating the end hole 22, each of both the ends of the inside elastic members 42 is expandably sewn the waistband inside panels 32 and 34.

The outer elastic member 44 is formed to adjacently connect the rubber band 46 expanded from the waistband inside panel 34 with outer panel member 48 expanded from a gap between the waistband inside panel 32 and the waistband outer panel 22 and to expand them.

Also, as shown in FIG. 5, a male connecting member 52 and a female connecting member 54 may be sewn in the waistband outer panel 24 and the waistband inside panel 32 so that the male connecting member 52 and the female connecting member 54 can be slidably connected along their length direction.

As constructed above, since the outer elastic member 44 and the inside elastic member 42 are elastic according to the wear's waist size, the total size of the pants is changed together with the plurality of the waistband outer panels 22, 24 and 26 and the waistband inside panels 32 and 34.

Namely, if only a waist size of pants is shortened for a wearer whose waist size is smaller than his/her thigh size, the work can unbalance the pants. The waist size of the pants of the present invention can be elastic till 20cm in maximum without repairing work, thereby maintaining its appearance balance. Especially the pocket portion can be prevented from twisting, thereby maintaining a good appearance of the pants.

Also, when the waist size is elastic, the waist outer panels 22 and 24 and the waist inside panels 32 and34 can be moved along their length directions by the male and female connecting members 52 and 54.

INDUSTRIAL APPLICABILITY As so far described, the waistband materials of pants according to the present invention are simple such that it can provide the worker with easy sewing works. Therefore, it can improve the sewing work and enhance the productivity.

As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the

details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalence of such meets and bounds are therefore intended to be embraced by the appended claims.