JP4589475B2 - Cushion body retractor and cushion body support structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a retractor for retracting and supporting a cushion body in a seat or bed of a chair at a support portion thereof, and a cushion body support structure using the same.
[0002]
[Prior art]
Conventionally, a retractor for a cushion body as described in, for example, JP-A-6-142352 and JP-A-11-47464 is known.
[0003]
[Problems to be solved by the invention]
However, such a conventional retractor for the cushion body has a problem that the structure is complicated and expensive, and the workability when retracting and stretching the skin material is poor.
[0004]
In view of the above-described problems, the present invention has a simple and simple structure, can be integrally formed with a synthetic resin, is inexpensive, has a good workability, and a cushion using the retractor. It aims to provide a body support structure.
[0005]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) A retractable tool main body in which a front-facing insertion piece having a through hole at least at the tip is projected on the front surface of a collar piece having a locking hole facing in the front-rear direction, and a substantially U made of a flexible member. A retractor for a cushion body comprising a coupling member having a locking piece that can be inserted and locked into the locking hole of the collar piece from the rear by elastically bending each end of the letter-shaped wound piece inwardly. The insertion piece is inserted from the back surface of the cushion body to the front surface side, and the holding means is passed through the insertion piece protruding from the front surface side of the cushion body. A cushion body characterized by elastically inserting and locking a locking piece of a coupling member sandwiched from the front and back and wound around a locking hole of a collar piece of the pull-in tool main body and straddling a support piece. Support structure.
[0006]
(2) In the above item (1), the retractor main body and the coupling tool are integrally formed of a synthetic resin material.
[0007]
(3) In the above item (1) or (2) , the holding means is a rod-like body or rope inserted through the through holes of a plurality of retractors.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing a seat portion (A) of a chair, and the present invention relates to a retractor that holds the cushion body to a support member, and a cushion body support structure using the same.
[0009]
FIG. 2 and subsequent figures show an embodiment in which the present invention is applied to the backrest (10) of the seat portion (A).
[0010]
As shown in FIG. 2, the structural part of the backrest (10) is composed of a backrest frame (12) with its lower end omitted and a backrest plate (14) attached to the backrest frame (12). It is made up of.
[0011]
The backrest plate (14) is, for example, a molded product of a hard synthetic resin material, and an expanded metal-like hollow lattice (16) is formed on the inner side excluding the peripheral part thereof. A retractor of the present invention, which will be described later, is fastened to the vertical bars of the lattice (16).
[0012]
FIG. 3 is an exploded perspective view of the retractor (18). The retractor (18) includes a retractor main body (20) and a connector (22).
[0013]
The retractor body (20) is an integrally molded product of a relatively hard synthetic resin material, and has a round hook piece (26) having a horizontally long locking hole (24) facing the front-rear direction at the center, and a hook From the two foot pieces (30a) (30a) that extend forward from both sides of the locking hole (24) on the front surface of the piece (26) and merge with each other at the front end to form a through hole (28) on the inside And an elongated insertion piece (30).
[0014]
The insertion piece (30) does not necessarily have to have two foot pieces (30a), and may have a through-hole (28) formed in a single elongated protrusion. Moreover, although the hook piece (26) was illustrated as a circular thing, arbitrary shapes, such as a square shape, may be sufficient.
[0015]
The connector (22) is an integrally molded product of a relatively hard synthetic resin material having flexibility, and is inwardly directed to both ends of a substantially U-shaped (in this embodiment, bowl-shaped) wound piece (32). Locking pieces (34) and (34) that can be inserted and locked from behind are provided in the locking holes (24) of the collar piece (26) by being elastically bent.
[0016]
First, as shown in FIG.4 and FIG.5, the insertion piece (30) of the retractor main body (20) was inserted into the surface side from the back surface of the cushion body (36), and came out from the surface side of the cushion body (36). The rod-like body (38) as a pressing means is passed through the through hole (28) of the insertion piece (30).
[0017]
On the other hand, the winding piece (32) of the connector (22) is straddled so as to surround the crosspieces of the lattice (16) of the backrest plate (14) which is the support portion.
[0018]
Next, when the locking piece (34) (34) of the connector (22) is inserted into the locking hole (24) from the rear surface of the flange piece (26) of the retracting tool body (20), the locking piece ( 34) are elastically bent inward from each other, pass through the locking hole (24), and are locked there. As a result, the cushion body (36) is pinched from the front and back by the rod-shaped body (38) and the flange piece (26).
[0019]
In this way, when the rod-like body (38) is inserted into the through holes (28) of the plurality of retractors (18) inserted into the cushion body (36), as shown in FIG. 5 and FIG. (40) is formed.
[0020]
In addition, instead of the rod-like body (38), as the holding means, the rope inserted through the through holes (28) of the plurality of retractors (18), or the through holes (28) of the individual retractors (18) It is also possible to use a button or the like that is locked to or sewn.
[0021]
【The invention's effect】
According to the first aspect of the present invention, it is possible to provide a retractor having a simple structure, strong, reliable locking and good workability. In addition, since the back surface of the cushion body is securely held by the collar piece and is prevented from bulging rearward, the cushion body is pinched by the attachment portion of the retracting tool in the support member and is damaged. Is reliably prevented.
In addition, a cushion support structure that is strong and has good workability can be provided.
[0022]
According to invention of Claim 2, it can be set as a retraction tool very cheap.
[0023]
According to the third aspect of the present invention, the pressing means can be continuously inserted through the through-holes of the plurality of retractors so that the continuous narrowing portion can be easily formed, and the skin material can be prevented from loosening. it can.
[Brief description of the drawings]
FIG. 1 is a perspective view of a seat portion of a chair to which the present invention is applied.
FIG. 2 is also a perspective view of a part of a backrest frame and a backrest plate constituting a backrest of a seat portion.
FIG. 3 is an enlarged exploded perspective view of an embodiment of the retractor of the present invention.
4 is a partially enlarged perspective view showing a state where the retractor shown in FIG. 3 is attached to a backrest plate and a rod-like body as a pressing means is inserted into a through hole of a front end portion thereof. FIG.
FIG. 5 is a cross-sectional view taken along line VV in FIG. 1 and shows a cushion body support structure that has been attached.
[Explanation of symbols]
(A) Seat part
(10) Backrest
(12) Backrest frame
(14) Backrest board
(16) Grid (supporting part)
(18) Retractor
(20) Retractor body
(22) Connector
(24) Locking hole
(26) Fragment
(28) Through hole
(30) Insertion piece
(30a) Foot piece
(32) Wrapped piece
(34) Locking piece
(36) Cushion body
(38) Bar-shaped piece (holding means)
(46) Narrowing part

Claims (3)

A pull-in tool main body in which a front-facing insertion piece having a through hole at least at a tip portion is provided on the front surface of a hook piece having a locking hole facing in the front-rear direction, and a substantially U-shaped member made of a flexible member. The insertion in the retractor of the cushion body comprising a coupling member having a locking piece that can be inserted and locked into the locking hole of the collar piece from the rear by elastically bending each end of the wound piece inwardly. Insert the piece from the back side of the cushion body to the front surface side, and pass the presser means through the insertion piece's through hole that protrudes from the front surface side of the cushion body. A cushion support structure characterized in that the engaging piece of the coupling tool sandwiched and elastically inserted and locked to the engaging hole of the hook piece of the pull-in tool main body spanning the supporting portion is inserted and locked. The cushion support structure according to claim 1, wherein the retractor main body and the connector are integrally formed of a synthetic resin material. The cushion body support structure according to claim 1 or 2 , wherein the presser means is a rod-like body or rope inserted through the through holes of the plurality of retractors.

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