Mounting structure for chair upholstery

Abstract

To provide a fitting structure for a piece of chair upholstery (a fabric), that can reduce individual difference in the finish of an outer fabric and that facilitates fitting of the outer fabric to a wooden frame.SOLUTION: On the side opposite to the seating side of a fitting groove 18 in a fitting part 17, a hold-down part 20 is formed over the entirety in a peripheral direction. On the seating side of the hold-down part 20 over the entirety in the peripheral direction, there is a shape retaining member 31 in which a peripheral part can be situated. A cushion material 32 is provided on the seating side of the shape retaining member 31, with an upholstery fabric (a fabric) 33 provided on the seating side of the cushion material 32. By the fabric 33, the seating side face of the cushion material 32 is covered, and the peripheral edge of the fabric 33 is fastened to the shape retaining member 31 to form a fabric constitution member 30. On the outer periphery of the fabric constitution member 30, there is provided over the entire peripheral direction a flexible projection 35 which protrudes outward. The outer edge part of the projection 35 is housed in the fitting groove 18 of the fitting part 17, with the fabric constitution member 30 thereby removably installed in the fitting part 17.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to an attachment structure for a seat covering of a chair.

Background Art

[0002] Conventionally, as a method of attaching a surface covering to the back of a chair composed of a wooden frame, a chip ball is fixed to the wooden frame, a cushion material is attached to the chip ball, and then the surface of the cushion material is covered with a surface covering, and the peripheral edge of the surface covering is attached to the wooden frame by a tucker (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above prior art, when the wooden frame or cushion material of the chair is three-dimensionally curved, it is difficult to attach the surface covering with a machine and is performed manually. Therefore, skilled techniques are required, and there is a problem that individual differences occur in the finish of the seat covering.

[0005] Therefore, an object of the present invention is to provide an attachment structure for a seat covering of a chair that can facilitate the attachment of the surface covering to the wooden frame and reduce individual differences in the finish of the seat covering.

Means for Solving the Problems

[0006] In order to solve the above problems, the invention according to claim 1 is a chair having a wooden frame, an attachment portion surrounded entirely in the circumferential direction is formed by a part of the frame, Inside the frame in the mounting portion, a mounting groove is formed over the entire circumferential direction. On the side opposite to the seating side of the mounting groove, a pressing portion is formed over the entire circumferential direction. Over the entire circumferential direction, on the seating side of the pressing portion, there is a shape-retaining member on which the peripheral edge portion can be positioned. A cushioning material is provided on the seating side of the shape-retaining member, a backing is provided on the seating side of the cushioning material, the backing covers the seating side surface of the cushioning material, and the peripheral edge of the backing is fixed to the shape-retaining member to form a backing constituent member. On the outer peripheral portion of the backing constituent member, a flexible protruding portion protruding in the outer direction is provided over the entire circumferential direction. By housing the outer edge portion of the protruding portion in the mounting groove of the mounting portion, the backing constituent member is detachably attached to the mounting portion.

[0007] The invention according to claim 2 is the invention according to claim 1, wherein A flexible wire is attached to the protruding portion over the entire circumferential direction, and the outer edge portion of the protruding portion is housed in the mounting groove of the mounting portion such that the wire is positioned in the mounting groove of the mounting portion.

[0008] The invention according to claim 3 is the invention according to claim 1 or 2, wherein the mounting portion is provided on the back of a chair.

[0009] The invention according to claim 4 is the invention according to claim 2 In the invention described, in a state where the backing constituent member is attached to the mounting portion, the backing and the shape-retaining member of the backing constituent member suppress the wire from coming off the mounting groove.

Advantages of the Invention

[0010] The present invention forms a protruding portion that protrudes outward in the outer peripheral portion of the ground covering member, and a flexible wire is attached to the protruding portion over the entire circumference in the circumferential direction. By storing the wire in the mounting groove of the mounting portion, the ground covering member is detachably attached to the mounting portion, eliminating the need for a ground covering mounting process that requires skill, reducing individual differences in the mounting of the ground covering on the chair, and improving quality.

[0011] Also, during repair and maintenance, the ground covering can be easily removed, greatly improving workability.

Brief Description of the Drawings

[0012]

Figure 1

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Figure 14

Modes for Carrying Out the Invention

[0013] The mode for carrying out the present invention will be described based on the embodiments shown in the drawings.

[0014] FIG. 1 shows a perspective view of a chair having the attachment structure of the seat fabric for the chair of the present invention. Hereinafter, the side where the knee side of the seated person is located is defined as the front side A, the side where the buttocks side of the seated person is located is defined as the rear side B, the upper side of FIG. 2 is defined as the upper side C, and the opposite side is defined as the lower side D for explanation.

[0015] As shown in FIGS. 5 to 8, the chair 1 has a wooden frame 2. The frame 2 has a pair of front frames 3, 3 that are arranged on the left and right of the front side A and are erected in the vertical direction, and a pair of rear frames 4, 4 that are arranged on the left and right of the rear side B and are erected in the vertical direction. The lower part of each front frame 3 constitutes a front leg 5, and the lower part of each rear frame 4 constitutes a rear leg 6.

[0016] A front seat frame 7 is installed between the left and right front frames 3, 3, a seat side frame 8 is installed between the front frame 3 and the rear frame 4, and a rear cross frame 9 is installed between the left and right rear frames 4, 4. The front seat frame 7, the seat side frame 8, and the rear cross frame 9 constitute a seat frame 10, and a seat 11 is provided on the upper part of the seat frame 10.

[0017] A back upper frame 12 is installed between the upper ends of the left and right rear frames 4, 4, and an elbow frame 13 is installed between the upper ends of the front frame 3 and the rear frame 4.

[0018] The back upper frame 12, the upper parts of the left and right rear frames 4, 4, and the rear cross frame 9 constitute a back frame 14.

[0019] Note that the shape, structure, etc. of the frame 2 are not limited to the above, and can be arbitrarily set.

[0020] A back attachment portion 17 that is entirely surrounded in the circumferential direction is configured by a back frame 14 that is a part of the frame 2, that is, the back upper frame 12, the upper parts of the left and right rear frames 4, 4, and the rear cross frame 9, as shown in FIGS. 5 to 8. The back attachment portion 17 has a space 19 that opens in the front-rear direction.

[0021] On the back attachment part 17, an attachment groove 18 that opens only in the inner direction thereof is formed over the entire circumferential direction of the back attachment part 17.

[0022] On the rear side B, which is the side opposite to the seating side of the attachment groove 18 in the back attachment part 17, as shown in FIG. 10, a holding part 20 that protrudes in the inner direction of the back attachment part 17 is formed over the entire circumferential direction, and the inner end of the holding part 20 is positioned more inward than the inner end of the front side A of the attachment groove 18.

[0023] On the front side A of the holding part 20 of the back attachment part 17, a retaining member 22 that has flexibility and can prevent the tensioning component 30 from falling backward when a seated person sits on the seat 11 and leans on the tensioning component 30 described later is provided so as to block the entire space 19. As shown in FIG. 10, the peripheral edge 22a of the retaining member 22 is attached to the surface of the front side A of the holding part 20 and is not located in the attachment groove 18. A cushioning material 23 is provided on the rear side B of the retaining member 22, and its rear surface is covered with a backsheet material 24. The peripheral edge of the backsheet material 24 is located between the holding part 20 and the retaining member 22 and is fixed to the holding part 20.

[0024] Also, as shown in FIGS. 11 to 14, the tensioning component 30 can be detachably attached within the space 19 of the back attachment part 17.

[0025] As shown in FIG. 9, the tensioning component 30 includes a shape-retaining member 31, a cushioning material 32, and a front tensioning material 33 that is a tensioning material.

[0026] The peripheral edge of the shape-retaining member 31 is located on the seated-person side (front side A) of the holding part 20 of the back attachment part 17 over the entire circumferential direction and is formed so as to have a predetermined three-dimensional shape. In this embodiment, a chip ball is used as the member constituting the shape-retaining member 31, but in addition to this, as long as it can maintain a shape to some extent when a seated person sits on the chair 1, the shape-retaining member 31 can be constituted by any member such as plastic or metal.

[0027] On the front side A, which is the seating side of the shape-retaining member 31, a cushioning material 32 made of urethane or the like is provided, and the entire seating side surface (front side surface) of the cushioning material 32 is covered with a surface covering material 33. The periphery of the surface covering material 33 is folded back to the opposite side (rear side B) of the seating side over the entire circumferential direction, and then fixed to the opposite side (rear side B) of the seating side of the shape-retaining member 31 by an adhesive tape or the like (not shown).

[0028] On the outer peripheral portion of the surface covering material 33 in the shape-retaining member 31, a protruding portion 35 is provided which protrudes in the radially outer direction of the back mounting portion 17 and is provided with a wire material 37 such as vinyl chloride or metal having flexibility at the outer edge portion over the entire circumferential direction.

[0029] The protruding portion 35 has a mounting member 36 such as a cloth. The mounting member 36 is folded back, and both ends thereof are fixed to the outer peripheral surface of the surface covering material 33. An accommodation portion 36a is formed inside the mounting member 36 over the entire circumferential direction.

[0030] The wire material 37 is accommodated in the accommodation portion 36a over the entire circumferential direction, and the wire material 37 is provided at the outer edge portion of the protruding portion 35. The protruding portion 35 has flexibility. Incidentally, the wire material 37 can be attached to the mounting member 36 by any method, unexpectedly enough.

[0031] In this way, the ground covering component 30 is separately formed integrally in advance, and the wire material 37 of the protruding portion 35 of the ground covering component 30 is positioned in the mounting groove 18 over the entire circumferential direction, and the outer edge portion of the protruding portion 35 is attached to the mounting groove 18 over the entire circumferential direction, so that the ground covering component 30 can be detachably attached to the back mounting portion 17.

[0032] As shown in Fig. 9, when the ground attachment member 30 is attached to the back attachment portion 17, the protruding portion 35 cannot be visually recognized from the outside. Also, as shown in Fig. 9, the attachment groove 18 is closed by the retaining member 22, the shape retaining member 31, the cushioning material 32, and the surface fabric 33, so that it is possible to prevent the protruding portion 35 and the wire 37 from coming out of the attachment groove 18 and to prevent the ground attachment member 30 from falling off.

[0033] The chair 1 has the above structure and the like, and thus exhibits the following operational effects.

[0034] Since the ground attachment member 30 can be configured by placing the cushioning material 32 on the shape retaining member 31 and covering it with the surface fabric 33, and then fixing the peripheral edge of the surface fabric 33 to the rear surface of the shape retaining member 31 with an adhesive tape or the like, the tucker-stitching work that requires skill is not necessary, the individual differences of the ground attachment member 30 can be reduced, and the quality of the chair 1 can be improved. Also, the degree of freedom in the appearance of the chair 1 increases, and the range of designs can be widened.

[0035] Also, since the wire 37 is housed in the attachment groove 18, the ground attachment member 30 can be attached to the back attachment portion 17, so that tucker-stitching is not required during the attachment work, and the work efficiency can be greatly improved.

[0036] Also, since tucker-stitching is not required and the ground attachment member 30 can be easily removed, the possibility of separate disposal of the chair 1 can be increased. Also, according to the order of the purchaser of the chair 1, the color, pattern, etc. of the surface fabric 33 of the ground attachment member 30 can be easily exchanged.

[0037] Also, during the repair and maintenance of the chair 1, the work of removing the staples one by one in the above prior art is not required, the ground attachment member 30 can be easily removed and attached, and the workability can be greatly improved.

[0038] Note that the retaining member 22 only needs to be able to prevent the seated person from slipping backward when sitting and leaning against the tensioning member 30. For example, the retaining member 22 may be composed of crossbars or the like provided so as to be spaced apart from each other.

[0039] [Embodiment 2] In the above Embodiment 1, the wire 37 was stored in the storage portion 35a of the mounting member 36 over the entire circumferential direction. However, without forming the storage portion, the mounting member and the wire may be integrally formed with a protruding portion having flexibility by resin or the like.

[0040] By attaching the outer edge portion of the flexible protruding portion to the mounting groove 18 over the entire circumferential direction, the tensioning member 30 can be detachably attached to the back mounting portion 17.

[0041] Since the other structures are the same as those in Embodiment 1, the description thereof is omitted.

[0042] This Embodiment 2 also has the same effects as those in Embodiment 1.

[0043] [Embodiment 3] In the above Embodiments 1 and 2, the tensioning member 30 was detachably attached to the back mounting portion 17 and used as a back member. However, a space surrounded by the entire circumferential direction may be formed in a part of the frame 2, and a mounting portion similar to the back mounting portion 17 in Embodiment 1 may be formed, and the tensioning member may be detachably attached to this mounting portion.

[0044] For example, a mounting portion similar to the back mounting portion 17 in Embodiment 1 may be provided in the space surrounded by the front frame 3, the rear frame 4, the elbow frame 13, and the seat-side frame 8, and the tensioning member may be detachably attached thereto.

[0045] Since the other structures are the same as those in Embodiments 1 and 2, the description thereof is omitted.

[0046] In the third embodiment as well, the same effects as those in the first and second embodiments are achieved.

Explanation of Signs

[0047] 1 Chair 2 Frame 17 Backrest attachment part (attachment part) 18 Attachment groove 20 Pressing part 30 Tensioning structure member 31 Shape retaining member 32 Cushion material 33 Outer tensioning material (tensioning material) 35 Protrusion 37 Wire

Claims

1. A chair having a wooden frame, forming a mounting portion entirely surrounded in the circumferential direction by a part of the frame, an attachment groove is formed along the entire circumferential direction inside the frame in the attachment portion, a pressing portion is formed along the entire circumferential direction on the side opposite to the seating side of the attachment groove, having a shape-retaining member whose peripheral edge portion can be positioned on the seating side of the pressing portion along the entire circumferential direction, providing a cushioning material on the seating side of the shape-retaining member, providing a seat fabric on the seating side of the cushioning material, covering the seating side surface of the cushioning material with the seat fabric, and fixing the peripheral edge of the seat fabric to the shape-retaining member to form a seat fabric constituent member, providing a flexible protruding portion protruding in the outer direction along the entire circumferential direction on the outer peripheral portion of the seat fabric constituent member, characterized in that the seat fabric constituent member is removably attached to the attachment portion by housing the outer edge portion of the protruding portion in the attachment groove of the attachment portion. An attachment structure for a seat fabric of a chair.

2. The protruding portion has an attachment member, a wire having flexibility is attached to the attachment member along the entire circumference in the circumferential direction, and the outer edge portion of the protruding portion is housed in the attachment groove of the attachment portion so that the wire is positioned in the attachment groove of the attachment portion. The attachment structure for a seat fabric of a chair according to Claim 1.

3. The attachment structure for a seat fabric of a chair according to Claim 1 or 2, characterized in that the attachment portion is provided on the back of the chair.

4. The attachment structure for a seat fabric of a chair according to Claim 2, characterized in that in a state where the seat fabric constituent member is attached to the attachment portion, the wire is prevented from coming off the attachment groove by the seat fabric and the shape-retaining member of the seat fabric constituent member.

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