JP2008119248A - Structure for installing cover on back panel of chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for installing a cover on a back panel which enables the simple and prompt installation of a cover member. <P>SOLUTION: A cover member 13 includes a front cover 14 made of an elastic material which covers the front side of a back panel 9, a back upper cover 16 which forms an upper pouch section 16a that is installed on the upper back surface of the front cover and opens downward between the upper part of the front cover, and a back lower cover 17 which forms a lower pouch section 17a that is installed on the lower back surface of the front cover and opens upward between the lower part of the front cover. The upper pouch section 16a is fitted to the upper part of the back panel 9 and the lower pouch section 17a is fitted to the lower part of the back panel 9, respectively, in a way that the cover member is formed so that the front cover 14 covers the front side of the back panel 9. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure for attaching a cover to a back plate of a chair.

  Even if it is a product of the same specification, the back chair is formed of a synthetic resin molded body and attached to the chair as it is, or the front of the office chair is covered with a cover member. There are products that can secure many product variations depending on the presence or absence and the color or pattern of the cover.

  As this kind of thing, there exists a thing as described in patent document 1 or 2, for example.

In the device described in Patent Document 1, the cover member forms a front cover that covers the front surface of the back plate (back shell), and an upper bag portion that opens downward between the front cover and the front cover. A rear upper cover and an engaged portion having a hard core at the lower portion of the front cover, the upper portion of the back plate is fitted to the upper bag portion, and the engaged portion is attached to the back plate. The cover member is attached to the front surface of the back plate by fitting into the engaging portion provided on the lower front surface. Also, Patent Document 2 describes a mounting structure similar to that of Patent Document 1.
US Pat. No. 6,499,810. JP 2003-225139 A

  However, in the conventional one as described above, it is necessary to provide an engaging portion for attaching the lower part of the cover member to the back plate, and in designing a design of the back plate alone including the presence or absence of the cover, A design that avoids the engaging portion has to be designed, and there is a drawback in that design restrictions arise.

  In view of the above-mentioned problems of the conventional technology, the present invention allows the design of the back plate to be freely designed by allowing the cover member to be easily and quickly attached without providing an engaging portion. An object of the present invention is to provide a cover mounting structure for a back plate that can be used in common for both a cover member mounting and a non-mounting member. .

According to the present invention, the above problem is solved as follows.
(1) In a mounting structure in which a cover member that covers a front surface of a back plate in a chair is attached, the cover member is attached to a front cover made of an elastic material that covers the front surface of the back plate, and an upper back surface of the front cover. A rear upper cover that forms an upper bag portion that opens downward between the upper portion of the front cover and a lower back surface of the front cover; A rear lower cover that forms a lower bag portion that opens, and the cover member covers the front surface of the back plate with the front cover covering the upper surface of the back plate and the lower bag portion as the back plate. The lower part of each is fitted.

  (2) In the above item (1), a flexible reinforcing plate is attached to the surface of the rear upper cover facing the front cover.

  (3) In the above item (1) or (2), a shrinkable member that shrinks in the left-right direction is attached to the upper edge of the rear lower cover.

  (4) In any of the above items (1) to (3), the left and right side portions of the front cover are folded back to provide a folded portion, and the folded portion and the front cover can be faced up and down. Attach a flexible reinforcement plate.

  (5) The bag formed between the front cover and the backing material according to any one of the above items (1) to (4), wherein the periphery of the backing material covering the rear surface of the front cover is attached to the front cover. A cushion pad is provided in the shaped portion.

  (6) In the above item (5), by providing an elongated opening in a part of the backing material, the rear upper cover and the rear lower cover are sandwiched between the front cover and the backing material, and the front Cushion pads are disposed on the outer surface of the cover, and after the peripheral edges thereof are stitched, they can be manufactured by turning them upside down through the opening.

  (7) In the above item (6), the opening is provided in a portion of the backing material covered with either the rear upper cover or the rear lower cover.

According to the present invention, the following effects can be achieved.
According to the first aspect of the present invention, the cover member can be easily and quickly attached without providing an engaging portion on the back plate, and the degree of freedom in forming the back plate itself can be increased, thereby enabling a free design design. Become.

  According to the second aspect of the present invention, since the flexible reinforcing plate is attached to the surface of the rear upper cover that faces the front cover, the rear upper cover is less likely to come off the back plate by the reinforcing plate. The generation | occurrence | production of the wrinkles of a rear upper cover can be prevented, and the modeling property along the back surface shape of a backplate can be obtained.

  According to the invention described in claim 3, since the shrinkable member that shrinks in the left-right direction is attached to the upper edge portion of the rear lower cover, the shrinkable member makes it difficult for the rear lower cover to come off the back plate, It is possible to prevent the upper edge portion of the rear lower cover from hanging down and to fit the rear lower cover to the back plate.

  According to the fourth aspect of the present invention, the front cover can be prevented from contracting in the left-right direction by the reinforcing plates on both sides, and tension can be applied to the front cover.

  According to the fifth aspect of the invention, not only the appearance of the cover but also the cushioning property can be obtained.

  According to the invention described in claim 6, since the periphery of the stitched portion is reversed and hidden inside the front and rear covers, the appearance is improved.

  According to the seventh aspect of the present invention, the opening is covered by the rear upper cover or the rear lower cover and is not exposed to the outside, so that the appearance is good.

1 to 8 show a chair provided with a first embodiment of the present invention.
As shown in FIGS. 1 and 2, the chair 1 includes five leg rods 3 having a caster 2 at the tip and a radial arrangement, and pedestals erected at the radial center of all the leg rods 3. 4, a support base 5 provided at the upper end of the pedestal 4, a seat plate 6 attached on the support base 5, attached to both side surfaces of the support base 5, and passing through both left and right sides of the seat plate 6 A pair of armrests 7 that stand, and are attached to both side surfaces of the support base 5 and extend rearward and upward, then rise at a predetermined inclination angle behind the seat plate 6, and upper ends are connected to each other A pair of left and right backrest frames 8 integrally connected by 8 a and a back plate 9 detachably fixed to the backrest frame 8 are provided.

  The support base 5 has a height adjustment function of the seat plate 6 and the armrest 7, a cushion adjustment function when a load is applied to the back plate 9, a function for adjusting the back and forth tilt angle of the back plate 9, and the like. .

  The back plate 9 is made of a synthetic resin molded body. As shown in FIG. 3 (b), the back plate 9 protrudes slightly downward in the side view according to the back curve of the standard body shape of the person sitting on the chair. In the plan view, the center is formed in a shape recessed in the rearward direction. Furthermore, as shown in FIG. Are provided in a predetermined repeating pattern.

The back plate 9 is connected to the front portion of the backrest frame 8 by connecting the connecting portions 12 provided on the upper and lower sides on the rear surface to the connected portions 11 provided on the upper and lower sides on the front surface of the backrest frame 8. It is attached as detachable.
Since the connection structure between the connecting portion 12 and the connected portion 11 is not directly related to the present invention, detailed description thereof is omitted.

  As shown in FIGS. 4 to 7, the cover member 13 covering the front surface of the back plate 9 covers the front cover 14 made of a stretchable material covering the front surface of the back plate 9 and the rear surface of the front cover 14, and has a peripheral edge. The lining material 15 is attached to the peripheral edge portion of the front cover 14 (the sewing portion is indicated by symbol A), and the upper edge and both side edges are sewn so as to cover the upper back surface of the lining material 15. A rear upper cover 16 that is attached to the front cover 14 and the backing material 15 at the upper portion of the portion A and forms an upper bag portion 16 a that opens downward between the upper portion of the backing material 15 and the backing material 15. The lower edge and both side edges are attached to the front cover 14 and the backing material 15 at the lower portion of the sewing portion A so as to cover the lower back surface, and open upward between the lower portion of the backing material 15. Rear lower cover to form the lower bag portion 17a And a 17.

  A flexible reinforcing plate 18 is attached to the surface of the rear upper cover 16 facing the backing material 15, and the upper edge portion of the rear lower cover 17 contracts in the left-right direction and includes a elastic string 19. A cushion pad 20 is disposed in a bag-like portion formed between the front cover 14 and the backing material 15.

  The front cover 14, the backing material 15, the rear upper cover 16, and the rear lower cover 17 are made of a stretchable sheet material made of fabric, artificial or natural leather, and have an appropriate color, pattern, touch, etc. It is preferable to select from the resulting material.

  The reinforcing plate 18 may be a synthetic resin sheet cut along the outer shape of the upper back of the back plate 9 or a thin plate.

  The elastic band 19 may be replaced with a flat rubber or other shrinkable member.

The cushion pad 20 is made of a material that is rich in elasticity and flexibility such as lightweight and soft foamed urethane, and is previously formed into a curved surface corresponding to the front shape of the back plate 9. The cushion pad 20 and the reinforcing plate 18 are formed slightly smaller than their outer shapes in order to secure a sewing margin for the covers 14, 16, 17 and the backing material 15.
However, it can also be carried out by being attached together with other members at the sewn portion A, with substantially the same shape as them.

  As shown in FIG. 4, the cover member 13 is configured so that the front cover 14 covers the front surface of the back plate 9, the upper bag portion 16 a on the upper portion of the back plate 9, and the lower bag portion 17 a on the lower portion of the back plate 9. In addition, it can be easily and quickly mounted on the back plate 9 by being respectively fitted.

A horizontally long opening 15 a is provided in a portion of the lower portion of the backing material 15 covered by the rear lower cover 17.
By providing this opening 15a, a manufacturing method as shown in FIG. 8 becomes possible.
That is, as shown in FIG. 8 (a), the rear upper cover 16 and the rear lower cover 17 are vertically spaced between the front cover 14 and the backing material 15, and the outer surface of the front cover 14 is The cushion pad 20 is disposed by adhering with an adhesive or the like as necessary. As shown in FIG. 8B, the cushion pad 20 is disposed outside the front cover 14, the backing material 15, the rear upper cover 16, and the rear lower cover 17. The peripheral edge (which may include the outer peripheral edge of the cushion pad 20) is sewn, and then, as shown in FIG. 8 (c), they are turned upside down through the opening 15a.

  Then, as shown in FIG. 5 to FIG. 7, the stitching margin of the stitching portion A is reversed so that it is all disposed inside the cover member 13 and is not exposed to the outside, and has a beautiful appearance. The cover member 13 can be manufactured.

FIG. 9 shows a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same member in 1st Embodiment, and a different code | symbol is attached | subjected and demonstrated only to a different member.
In this example, the left and right side portions of the front cover 14 are folded back to provide a folded portion 21, and the folded portion 21 and the backing material 15 (the front cover 14 when the cushion pad 20 and the backing material 15 are omitted). A flexible reinforcing plate 22 facing up and down is attached between the two.

  In this way, when the cover member 13 is mounted on the back plate 9, the front cover 14 can be prevented from contracting in the left-right direction by the reinforcing plates 22 on both sides, and tension is applied to the front cover 14. be able to.

The present invention is not limited to the above-described embodiment, and can be implemented in a modified form without departing from the scope of the claims.
For example, when the cushion pad 20 is not required, the cushion pad 20 and the backing material 15 can be omitted.

It is a side view of a chair provided with a 1st embodiment of the present invention. It is a chair exploded perspective view of the state where a back board was removed. (a), (b) is the front view and side view of a backplate. It is the perspective view seen from the slanting back which shows a state when attaching a cover member to a back board. It is an expansion vertical side view of the upper part when a cover member is mounted | worn with a backplate. Similarly, it is a lower enlarged vertical side view. Similarly, it is an enlarged transverse plan view of the middle part. (a), (b), (c) is a perspective view which shows the one assembly procedure of a cover member. It is the perspective view which looked at the cover member in the 2nd Embodiment of this invention from diagonally back.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Office chair 2 Caster 3 Leg rod 4 Leg pillar 5 Support base 6 Seat plate 7 Armrest 8 Backrest frame 9 Back plate 10 Opening 11 Connected part 12 Connecting part 13 Cover member 14 Front cover 15 Backing material 15a opening 16 Rear upper part Cover 16a Upper bag portion 17 Rear lower cover 17a Lower bag portion 18 Reinforcement plate 19 Rubber string (shrinkable member)
20 Cushion pad 21 Folded part 22 Reinforcement plate A Sewing part

Claims (7)

A mounting structure for attaching a cover member covering the front surface of the back plate of the chair,
The cover member is attached to the front cover made of a stretchable material that covers the front surface of the back plate and the upper back of the front cover, and forms an upper bag portion that opens downward between the upper portion of the front cover. A rear upper cover, and a rear lower cover that is attached to a lower back surface of the front cover and forms a lower bag portion that opens upward between the lower portion of the front cover, and A cover for a back plate in a chair, characterized in that the cover covers the front of the back plate and the upper bag portion is fitted on the upper portion of the back plate and the lower bag portion is fitted on the lower portion of the back plate. Mounting structure.   The structure for attaching a cover to a back plate in a chair according to claim 1, wherein a flexible reinforcing plate is attached to a surface of the rear upper cover facing the front cover.   The attachment structure of the cover to the back board in the chair of Claim 1 or 2 which attached the shrinkable member which shrink | contracts to the left-right direction to the upper edge part of a rear lower cover.   The left and right side portions of the front cover are folded back, a folded portion is provided, and a flexible reinforcing plate facing in the vertical direction is attached between the folded portion and the front cover. Attachment structure of the cover to the back board in the chair described.   The peripheral portion of the backing material covering the rear surface of the front cover is attached to the front cover, and a cushion pad is provided in a bag-like portion formed between the front cover and the backing material. The structure for attaching the cover to the back plate of the chair described in 1.   By providing a long hole opening in a part of the backing material, the rear upper cover and the rear lower cover are sandwiched between the front cover and the backing material, and a cushion pad is disposed on the outer surface of the front cover. The structure for attaching a cover to a back plate in a chair according to claim 5, wherein the peripheral portions of the chair can be manufactured by reversing the front and back through the opening.   The structure for attaching a cover to a back plate in a chair according to claim 6, wherein the opening is provided in a portion of the backing material covered by either the rear upper cover or the rear lower cover.

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