JP3001140U - Chair seat plate mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the structure and reduce the manufacturing cost of a structure in which a seat plate of an office chair or the like can be detachably attached. [Structure] Mountain-shaped upstanding pieces 5a, 5b having a V-shaped notch 6 formed in the central portion are integrally provided on the upper surface of a support board 1 formed of hard elastic plastic, and the upstanding pieces 5a, 5
A seat plate 1 in which arcuate engagement portions 7, 7 are cut out on both edge slopes 17 of b and a cushion material 11 is fixed to the upper surface.
The front end of the upright pieces 5a and 5b are fitted to the lower surface of 0, and the arcuate surface-shaped reinforcing edge 16 is fitted to both the inner edges to the engaging portions 7 and 7.
To form a square opening 15 in which

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for detachably attaching a seat plate of an office chair or the like.

[0002]

[Prior art]

 In the seat plate mounting structure of a chair, as disclosed in, for example, Japanese Patent Laid-Open No. 4-246309, a mounting wire made of metal is embedded in a cushion material such as urethane, and a part of the mounting wire is attached. There is one in which the cushion wire is exposed in a recessed portion on the lower surface, and the mount wire is supported by a mount piece protruding from the chair body.

[0003]

[Problems to be solved by the device]

 However, such a structure in which the mounting wire is embedded in the cushioning material has the problem that the bending cost of the mounting wire and the burying process are troublesome and the manufacturing cost is high. If it does not have such a thickness, there is a problem in that the presence of the mounting wire gives a rugged feel to the user's buttocks and the usability is not good.

[0004]

[Means for Solving the Problems]

 The seat plate mounting structure of the present invention is intended to solve the above-mentioned problem, and a mountain plate-shaped upright piece having a V-shaped notch formed at the center is formed on the upper surface of a support plate molded of hard elastic plastic. The protrusions are integrally formed, and arc-shaped engaging portions are cut out on the slopes of both edges of the upright piece, while the tip of the upright piece is fitted to the lower surface of the seat plate, and the engaging portions are attached to both inner edges. It is characterized by forming a rectangular opening having matching arcuate planar reinforcing edges.

In addition, according to the present invention, in the seat plate mounting structure of the above chair, a pair of two standing pieces are made to approach each other on the upper surface of the support plate so as to integrally project, and reinforcing ribs are integrally formed on the both standing pieces. I will do it.

Further, according to the present invention, a mountain-shaped plate-shaped standing piece having a V-shaped notch formed in the central portion is integrally provided on the lower surface of a seat plate formed of hard elastic plastic, and both of the standing pieces are formed. An arcuate engagement portion is cut out on the edge slope, while the tip of the upright piece is fitted on the upper surface of the support board, and arcuate reinforcement edges that match the engagement portion are formed on both inner edges. It is characterized by forming a square aperture.

In addition, in the seat plate mounting structure of the above chair according to the present invention, a pair of standing pieces are made to closely approach each other on the lower surface of the seat board, and reinforcing ribs are integrally formed on both standing pieces. It becomes.

[0008]

[Action]

 The seat plate can be firmly and detachably attached to the support plate by fitting the upright piece into the opening and engaging the engaging portion with the arcuate reinforcing edge.

[0009]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a support plate in the shape of a rounded square shallow dish integrally formed by a hard elastic plastic, and the support plate 1 is supported substantially horizontally by a supporting leg (not shown). The support board 1 is provided with mounting holes 2, 2 ... For screwing to the upper ends of the supporting legs, and mounting holes 3, 3 ... For mounting an armrest (not shown). Further, a large number of ribs 4, 4, ... For reinforcement are integrally formed in a lattice shape on the upper surface.

Reference numerals 5a and 5b denote mountain-shaped plate-shaped upstanding pieces that are provided in parallel on the upper surface of the support board 1 so that two pairs of them approach each other. 6 is formed, and arcuate engaging portions 7, 7 are cut out on both edge slopes 17, 17. Reference numeral 8 denotes a reinforcing rib integrally formed to reinforce the standing pieces 5a and 5b in a standing state. It is to be noted that such upright pieces 5a and 5b, which are a pair of two pieces, are formed at a total of six places near the four corners of the upper surface of the support board 1 and at both side edges.

On the other hand, 9 has a cushion material 11 made of urethane or the like arranged on the upper surface of the seat plate 10, the cushion material 11 is covered with a skin material 12 such as cloth, and the peripheral edge of the skin material 12 is covered by the seat board 10. The cushion is fixed to the lower side by the binding needle 13. The seat plate 10 is formed of an elastic plastic such as polypropylene into an annular plate shape having a hole 14 in the center, and the tip portions of the upright pieces 5a, 5b are fitted to the portions corresponding to the upright pieces 5a, 5b. A square-shaped opening 15 that can be fitted is formed.

As shown in the enlarged view of FIG. 5, the opening 15 has arcuate reinforcing edges 16 and 16 integrally formed on both inner edges thereof so as to be able to match the engaging portions 7 and 7. Reference numeral 18 denotes a reinforcing rib of the arcuate reinforcing edges 16 and 16.

Therefore, if the cushion 9 is put on the support board 1 so that the standing pieces 5a and 5b are aligned with each other, a load is applied to the cushion 9 and the standing pieces 5a and 5b are fitted into the opening 15. The arcuate reinforcing edges 16 and 16 are compressed by the arcuate reinforcing edges 16 and 16 of the upstanding pieces 5a and 5b, and the notches 6 are once closed to elastically restore the arcuate reinforcing edges 16 and 16. As shown in FIG. 3, the cushion 9 can be mounted on the support board 1 in conformity with the engaging portions 7, 7.

Since the V-shaped notch 6 is formed, the upright pieces 5a and 5b can be elastically bent easily by the inward load of the arcuate reinforcing edges 16 and 16 on the sloped surfaces 17 and 17 of both edges thereof. Therefore, the arcuate reinforcing edges 16 and 16 can be smoothly engaged with the engaging portions 7 and 7. Further, the standing pieces 5a and 5b can be provided with required strength by forming a pair of the standing pieces 5a and 5b together with the reinforcing rib 8 on the upper surface of the support board 1. By artificially pulling up the cushion 9, the arcuate reinforcing edges 16 and 16 can be disengaged from the engaging portions 7 and 7 by the elasticity of the upright pieces 5a and 5b, so that the color of the seat surface can be adjusted by the customer. You can easily change the color to your liking.

Further, in the mold for injection-molding the support board 1, the upright pieces 5a and 5b can be easily bent inward due to the V-shaped notch 6 as described above. Despite the cut shape, a horizontal drawing mechanism is not required in the mold, and the rising pieces 5a and 5b elastically bend inward when the mold is opened, so that the mold can be opened without obstacles and the mold structure becomes complicated. do not do. In addition, since the standing pieces 5a and 5b are formed into a pair of chevron-shaped plates, not only the strength is increased, but also the plastic wall thickness is made uniform, and there is no risk of sink marks. Is possible.

In the above embodiment, the standing pieces 5a and 5b are formed on the support board 1 and the holes 15 are formed in the seat plate 10. However, the standing pieces 5a and 5b are formed on the lower surface of the seat plate 10. By forming the holes 15 in the support board 1, the seat plate 10 can be removably attached to the support board 1 in exactly the same manner as in the above embodiment.

[0017]

[Effect of device]

 As described above, according to the present invention, the cushion can be formed only by fixing the cushion material on the upper surface of the seat plate, which facilitates the manufacture, and at the same time, by fitting the upright piece into the opening, the cushion is mounted on the support board. The seat plate can be easily and firmly attached to. In addition, the seat plate can be freely attached and detached as required, which has a beneficial effect such as easy handling.

[Brief description of drawings]

FIG. 1 is a perspective view showing a seat plate mounting structure of a chair according to the present invention.

FIG. 2 is a cross-sectional view of a main part at the time of attachment.

FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 4 is a perspective view of a standing piece.

FIG. 5 is a perspective view of an opening.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support board 5a, 5b Standing piece 6 V-shaped notch 7 Engagement portion 8 Reinforcing rib 9 Cushion 10 Seat plate 11 Cushion material 12 Skin material 15 Opening hole 16 Arc-shaped reinforcing edge 17 Both edge slopes

Claims (4)

[Scope of utility model registration request] 1. A chevron plate-shaped standing piece having a V-shaped notch formed in the central portion is integrally provided on the upper surface of a support board formed of hard elastic plastic, and both side slopes of the standing piece are circular. While forming an arc-shaped engaging portion by notching, a rectangular opening in which the tip end of the upright piece is fitted to the lower surface of the seat plate and arc-shaped reinforcing edges matching the engaging portion are formed on both inner edges. A seat plate mounting structure for a chair, characterized in that 2. An angled plate-shaped standing piece having a V-shaped notch formed in the central portion is integrally provided on the lower surface of a seat plate formed of hard elastic plastic, and both side slopes of the rising piece are circular. While forming the arc-shaped engaging portion by notching, a rectangular opening in which the tip end portion of the standing piece is fitted on the upper surface of the support board and arc-shaped reinforcing edges that match the engaging portion are formed on both inner edges. A seat plate mounting structure for a chair, characterized in that 3. The chair seat according to claim 1, wherein a pair of standing pieces are provided so as to approach each other on the upper surface of the support board so as to project integrally, and reinforcing ribs are integrally formed on both the standing pieces. Board mounting structure. 4. The chair seat according to claim 2, wherein a pair of standing pieces are provided so as to closely approach each other on the lower surface of the seat plate, and reinforcing ribs are integrally formed on the standing pieces. Board mounting structure.