JP5138252B2 - Cover mounting structure on back plate of chair - Google Patents

Description

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

Some conventional chairs are provided with a cover member made of a stretchable material on the front surface of the back plate (see, for example, Patent Document 1 or 2).
US Pat. No. 6,499,810 (FIGS. 9-11) Japanese translation of PCT publication No. 2003-521958 (FIG. 1B, FIG. 1C, FIG. 2B)

However, in the cover mounting structure described in Patent Document 1, the cover member made of a stretchable material is extended in the vertical direction, and the upper and lower portions thereof are attached to the back plate. both side edges, the inner position next to the left and right side edges of the back plate, it is difficult to match the left and right side edges of the left and right side edges and the back plate of the cover member.

  Further, in the cover mounting structure described in Patent Document 2, the cover member made of a stretchable material is extended in the vertical direction and the horizontal direction, and the end portions in the four directions of the cover member are located on the back side of the back plate. Since they are respectively attached, both sides of the cover member after mounting may be displaced up and down and inside and outside with respect to both sides of the back plate.

  In view of the above-mentioned problems of the prior art, the present invention can accurately match the left and right side edges of the cover member to the front of the left and right side edges of the back plate, and the cover member to the back plate. It is an object of the present invention to provide a cover mounting structure for a back plate of a chair that can be easily attached and detached.

According to the present invention, the above problem is solved as follows.
(1) A mounting structure for attaching a cover member covering the front surface to a back plate of a chair,
A plurality of upper and lower concave holes facing in the front-rear direction are provided on both sides of the front surface inward from the outer peripheral edge of the back plate, and the front cover portion covering the front surface of the back plate in the cover member is directed in the vertical direction. a reinforcing plate attached so as to face the side edge portion of the back plate, a plurality of projections projecting from the rearward to the inside than an outer peripheral edge and opposing portions of the back plate on the rear surface of the reinforcing plate, It fits in the concave hole.

  (2) In the above item (1), the front cover portion is formed of a stretchable material.

  (3) In the above paragraph (1) or (2), the rear surface of the reinforcing plate is inserted between the folded portion and the front cover portion by connecting the folded portions to the rear on both side ends of the front cover portion. And fasten the folded portion.

  (4) In the item (3), the engagement hole provided in the folded portion is engaged with the protrusion of the reinforcing plate.

  (5) In any one of the above items (1) to (4), an engagement claw that protrudes in the left-right direction is provided at the tip of the projection, and the engagement claw is provided in the depth direction on the inner surface of the corresponding concave hole. It is locked to the widening step provided in the intermediate part.

  (6) In any one of the above items (1) to (5), a rear upper cover that forms an upper bag portion that opens downward between the front cover portion and an upper back surface of the front cover portion of the cover member The upper bag portion is fitted on the upper portion of the back plate.

  (7) The rear lower cover according to any one of the above items (1) to (6), wherein a lower bag portion that opens upward is formed between the front cover portion and the lower back surface of the front cover portion of the cover member. The lower bag portion is fitted on the lower portion of the back plate.

  (8) In any one of the above items (1) to (7), the concave hole is formed by a plurality of openings provided as patterns on the front surface of the back plate, which are arranged on both sides of the back plate.

According to the present invention, the following effects can be achieved.
According to the invention described in the above (1) , the cover member can be easily and quickly attached to the back plate by fitting the protrusion protruding on the rear surface of the reinforcing plate into the concave hole of the back plate. At the same time, it can be easily removed.
Further, since the reinforcing plates are provided on both side portions of the cover member, both side edges of the cover member can be accurately matched to the front side of both side edges of the back plate.

According to the invention described in the above item (2) , since the front cover portion is formed of a stretchable material, the left and right reinforcing plates are attracted inward by the contraction force of the front cover portion after mounting. The left and right protrusions are less likely to be removed from the concave hole, and the occurrence of wrinkles in the front cover portion can be prevented.
In addition, when the front cover part is formed of a stretchable material in this way, it is difficult to match the side edge of the front cover part with the side edge of the back plate as in Patent Document 1, but the reinforcement is applied to both side parts. By providing the plate, the problem can be solved.

According to the invention described in the above item (3) , the reinforcing plates on both sides are not exposed to the outside, and a beautiful appearance can be exhibited.

According to the invention described in the above (4) , since the engagement hole provided in the folded portion is engaged with the protrusion of the reinforcing plate, the folded portion is difficult to peel off from the reinforcing plate, and as a result, the front cover portion However, it becomes difficult to peel off from the backboard.

According to the invention described in (5) above, it is possible to prevent the cover member from being easily detached from the back plate.

According to the invention described in (6) section, by providing the rear upper cover, the upper portion of the cover member, it becomes easily disengaged from the top of the back plate can Rukoto fitted to the back plate, yet the cover member Can be prevented from sagging.

According to the invention described in (7) section by providing a rear lower cover, the bottom of the cover member, it becomes easily disengaged from the lower part of the back plate, it is Rukoto fitted to the back plate.

According to the invention described in the above item (8) , since the concave hole can be shared with a part of the opening provided as a pattern on the back plate, the manufacturing process can be shortened.

1-4 show a chair comprising an embodiment of the present invention.
As shown in FIGS. 1 and 2, this chair 1 includes five leg rods 3 having a caster 2 at the tip and a radial arrangement, and legs erected at the radial center of all leg rods 3. Column 4, support base 5 provided at the upper end of leg pillar 4, seat plate 6 attached on support base 5, attached to both side surfaces of support base 5, and passing through both left and right sides of seat plate 6 A pair of armrests 7 that stand upright, 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 the upper ends are connected to each other A pair of left and right backrest frames 8 integrally connected by a portion 8 a and a back plate 9 detachably fixed to the backrest frame 8 are provided.

  The support base 5 is provided with height adjusting means for the seat plate 6 and the armrest 7, a reclining mechanism for adjusting the rearward tilt angle of the back plate 9, and the like (all not shown).

Front of the back plate 9, in accordance with the standard body of the seated person in a side view, somewhat together with the lower is formed on my shape ho projecting forward, in a plan view, the shape of the center is recessed rearward Further, as shown in FIG. 3, a large number of vertically long openings 10 are provided in a predetermined repeating pattern on the substantially front surface excluding the outer peripheral edge.

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 FIG. 2, the cover member 13 is made of a stretchable material and has a front cover portion 14 having a front shape substantially the same as the front shape of the back plate 8, and an upper edge and both side edges are front cover portions. The rear upper cover portion 15 is formed continuously with the peripheral edge of the upper portion 14 and opens downward with the front cover portion 14, and the lower edge and both side edges are the front cover portion 14. A rear lower cover portion 16 that forms a lower bag portion 16a that opens upward between the front cover portion 14 and the rear periphery of the front cover portion 14 and a rear portion that is continuous from both side ends of the front cover portion. Folded portions 17, 17 and the vertical direction in which the outer portion is inserted between each folded portion 17 and the front cover portion 14, and the folded portion 17 is adhered to the rear surface by sewing or adhesive. And thin plate-like reinforcing plates 18 and 18 facing each other.

As shown in FIG. 5, each reinforcing plate 18 is formed by a synthetic resin material having flexibility so as to have the same shape as the outer shape of both sides of the back plate 9, and the folded portion 17 on the rear surface is fastened. A plurality of vertically long projections 19 facing rearwardly are provided at predetermined intervals in the vertical direction on the inner side of the portion.
The vertical spacing of the protrusions 19 is the same as the vertical spacing of the concave holes 21 formed by the openings 10 in the back plate 9 that are arranged on both sides of the back plate 9.

  On both side surfaces of the tip of each projection 19, hook-like engagement claws 20 that expand toward the base of the projection 19 are provided, and the depth on the inner surface of each concave hole 21 of the back plate 9 corresponding thereto is provided. In the middle portion in the direction, there is provided a widening step portion 22 that widens toward the rear so that each engaging claw 20 can be locked.

  Then, as shown by an arrow in FIG. 2, the cover member 13 covers the upper bag portion 15a on the upper portion of the back plate 9 from above, and then lowers the lower portion so that the lower bag portion 16a is The lower part of the plate 9 is fitted from below, and then the projections 19 of the left and right reinforcing plates 18 and 18 are pushed into the corresponding concave holes 21 from the front, and the engaging claws 20 are inserted into the concave holes 21. By engaging with the widening step portion 22, it can be easily and quickly mounted on the back plate.

  After mounting, both sides of the front cover part 14 can be kept in the same shape as the side edges of the back plate 19 by the left and right reinforcing plates 18, 18, so the front cover part 14 is made of a stretchable material. However, both side edges are not drawn inward, and a beautiful appearance can always be exhibited.

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, as shown in FIG. 6, the engagement holes 23 provided in the folded portion 17, which may be engaged with the projection 19 of the reinforcing plate 18.
By as its become folded portion 17 is hardly peeled off from the reinforcing plate 18, or sewn folded portion 17 in the reinforcing plate 18 may be omitted from or bonded.

  Moreover, although the concave hole 21 penetrates the back plate 9 in the front-rear direction in the illustrated example, it may be a bottomed hole whose rear end is closed.

It is an exploded perspective view of a chair provided with one embodiment of the present invention. It is the perspective view which looked at the state when attaching a cover member to a back board from the slanting back. It is a front view of a back board. FIG. 4 is an enlarged cross-sectional plan view taken along line IV-IV in FIG. 3. It is the perspective view which looked at the reinforcement plate from back. It is a partial exploded perspective view which shows the modification of the coupling | bond part of a folding | turning part and a reinforcement plate.

DESCRIPTION OF SYMBOLS 1 Chair 2 Caster 3 Leg rod 4 Leg column 5 Support base 6 Seat plate 7 Armrest 8 Backrest frame 8a Connecting part 9 Back plate 10 Opening 11 Connected part 12 Connecting part 13 Cover member 14 Front cover part 15 Rear upper cover part 15a Upper bag part 16 Rear lower cover part 16a Lower bag part 17 Folded part 18 Reinforcement plate 19 Projection 20 Engagement claw 21 Recessed hole 22 Widening step part 23 Engagement hole

Claims (8)

A mounting structure for attaching a cover member covering the front surface of the back plate of the chair,
A plurality of upper and lower concave holes facing in the front-rear direction are provided on both sides of the front surface inward from the outer peripheral edge of the back plate, and the front cover portion covering the front surface of the back plate in the cover member is directed in the vertical direction. a reinforcing plate attached so as to face the side edge portion of the back plate, a plurality of projections projecting from the rearward to the inside than an outer peripheral edge and opposing portions of the back plate on the rear surface of the reinforcing plate, A cover attaching structure to a back plate in a chair, which is fitted into the concave hole.   The cover attachment structure to the back board in the chair of Claim 1 which formed the front cover part with the elastic material.   3. A rear folded portion is provided on both side ends of the front cover portion, and the folded portion is fastened to the rear surface of the reinforcing plate inserted between the folded portion and the front cover portion. A cover mounting structure on the back plate of the chair described.   The cover attachment structure to the back board in the chair according to claim 3, wherein an engagement hole provided in the folded portion is engaged with a protrusion of the reinforcing plate.   An engaging claw that protrudes in the left-right direction is provided at the tip of the protrusion, and the engaging claw is engaged with a widening step provided in an intermediate portion in the depth direction on the inner surface of the corresponding concave hole. The cover attachment structure to the back board in the chair in any one of 4.   A rear upper cover portion is formed on the upper back surface of the front cover portion of the cover member so as to form an upper bag portion that opens downward between the front cover portion and the upper bag portion is fitted to the upper portion of the back plate. The cover attachment structure to the back board in the chair in any one of Claims 1-5 made it.   A rear lower cover portion is formed on the lower back surface of the front cover portion of the cover member to form a lower bag portion that opens upward between the front cover portion, and the lower bag portion is fitted to the lower portion of the back plate. The cover attachment structure to the back board in the chair in any one of Claims 1-6 made it.   The cover attachment to the back board in the chair in any one of Claims 1-7 which formed the concave hole by what was arrange | positioned in the both sides of the back board among many openings provided as a pattern in the front surface of the back board. Construction.

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