JP2534726Y2 - Mounting device for cushion body in chair - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching a cushion to a back plate or a seat plate of a chair.

[0002]

2. Description of the Related Art As means for attaching a cushion body to a backrest of a chair, there is a prior art Japanese Utility Model Publication No. Sho 55-4.
In Japanese Patent No. 8987, as shown in FIG. 14, a loop-shaped metal linear body 31 is embedded on the back side of the cushion body 30, and the linear body 31 is exposed at a plurality of positions on the back side of the cushion body 30. On the other hand, on the front surface of the back plate 32, the linear member 3 is provided at each portion corresponding to the exposed portion of the linear member 31.
A pair of pinching claws 3 engaged with the inner and outer sides of the loop;
3a and 33b are integrally provided, and the linear body 31 is pressed against the back plate 32 to elastically deform both the inner and outer locking claws 33a and 33b while the linear body 3 is being elastically deformed.
Patent Document 1 discloses that the cushion body 30 can be attached in a one-touch manner by pushing and engaging the inner and outer holding claws 33a and 33b.

[0003]

However, as shown in FIG. 15, when a person sitting on a chair leans and the back plate 32 is bent and the cushion 30 is crushed and deformed, the linear member 31 is deformed. However, it has a tendency to move radially inward relative to each locking body 33, so that each time a person leans on the backrest, the inner locking claw 33a is bent on each locking body 33. A deforming force acts repeatedly.

For this reason, the inner locking claws 33a of each locking body 33
In addition, there is a problem that a so-called settling phenomenon occurs, and the function of holding the linear body 31 by each locking body 33 is reduced, and the cushion body 30 is easily detached. On the other hand, in Japanese Utility Model Publication No. 60-28320 as another prior art, an engaging groove which is opened in a radially outward direction of the cushion body is formed in each locking body, and the linear body is backed. A device is described which is fitted from the outside along the front surface of the plate.

However, in this prior art, since all the locking members are not elastically deformed, a slight slack is formed in the linear members so that the linear members can be engaged with the respective locking members. Since the linear body must be sequentially engaged with each locking body, the cushion body is attached to the back plate or the seat plate, and the wire is connected to each locking body. There was a problem that the cushion could not be firmly attached because the body could not be brought into contact with the body in a taut state.

An object of the present invention is to enable a cushion body to be firmly attached without impairing the ease of attachment.

[0007]

According to the present invention, in order to achieve the above object, a loop-shaped linear body extending along the outer periphery of the cushion is provided on the back side of the cushion in the chair. On the other hand, at the portion corresponding to the linear body on the front surface of the backrest plate or the upper surface of the seat plate to which the cushion body is attached, the locking body for the linear body is such that the linear body cannot be detached in the radial outward direction. A chair provided with at least three places, wherein one of the at least three locking bodies is elastically engaged with the linear body from both inside and outside sides of the loop in a loop-like manner. Form nails,
The other remaining locking body is configured to form an elastically non-deformable inner holding claw that engages the linear body from inside the loop of the linear body.

[0008]

[Function / Effect of the Invention] With this configuration, the cushion body is brought into contact with the back plate or the seat plate, and the linear body is firstly placed.
After engaging the engaging members with which the inner holding claws are not deformed, finally, the linear body is pushed into and engaged with the engaging members where the inner and outer holding claws are elastically deformed, whereby the cushion body is engaged. Can be mounted on the back plate.

In this case, since the inner and outer holding claws are elastically deformed, the linear body is brought into contact with the inner holding claw of the other locking body. In other words, the linear body can be engaged with each locking body in a state where the linear body is stretched without any slack. Then, in the state where the cushion body is attached to the backrest plate, a force such as bending the inner holding claw of each locking body acts on the inner holding claw through the linear body due to the person leaning on the backrest. In addition, since the inner claws other than one of the locking members on the backrest plate do not elastically deform, no settling phenomenon occurs on the locking members other than the one, and the wire is not deformed. The state in which the shape is securely held is maintained.

As described above, according to the present invention, the cushion body can be extremely easily attached to the backrest plate or the seat plate, while the linear body is engaged with the locking body in a state where it is taut. This has the effect of being able to hold and improving the mounting strength of the cushion body.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment in which the present invention is applied to mounting a cushion body on a backrest plate.
Description will be made based on 3). FIGS. 1 to 12 show a first embodiment. In these figures, reference numeral 1 denotes a shell-shaped back plate made of synthetic resin, and reference numeral 2 denotes a cushion body. It is attached to a backrest support rod 4 provided near the rear of the seat 3.

The cushion body 2 has a metal linear body 5 extending in a loop along the outer periphery of the cushion body 2.
Is embedded, and a linear body 5 is
By exposing two recesses 6 at the top, two at the left and right sides, and two at the bottom,
The linear body 5 is exposed at four locations, that is, up, down, left, and right extending in four directions from the center of the cushion body 2.

On the upper part of the front surface of the backrest plate 1, two upper locking members 7, 7 corresponding to the exposed portion of the upper part of the linear body 5 are provided. One horizontal locking member 8, 8 corresponding to the exposed portion on both the left and right sides of the linear member 5, and two lower members corresponding to the lower exposed portion of the linear member 5 below the horizontal locking member 8, 8. Stop bodies 9 are provided respectively.

Each of the upper locking members 7 is formed integrally with the backrest plate 1 and, as clearly shown in FIGS. 4 and 5, engages with the linear member 5 from the inside of its loop. Nail 10
And outer clamping claws 11 engaged from the outside. Two reinforcing ribs 12 and 13 are integrally connected to the inner and outer clamping claws 10 and 11, respectively. At this time, the thickness t1 and the vertical width w of the rib 12 in the inner pinching nail 10
1 is set to a large dimension so that the inner pinching claws 11 are not elastically deformed, while the thickness t2 and the vertical width dimension w2 of the ribs 13 in the outer pinching claws 10 are set to small dimensions, and By forming the holding claws 7b so as to be elastically deformable upward, when the linear body 5 is pushed between the inner and outer holding claws 10, 11, the outer holding claws 11 are elastically deformed, and the two holding claws 10 are deformed. , 11 so that the linear body 5 is fitted and engaged.

The inner and outer locking members 1 of the upper locking member 7
The linear body 5 is formed by a dashed line and a dashed line in FIG. As shown in the drawing, the linear body 5 is guided between the inner and outer holding claws 10 and 11 even when the linear body 5 is inclined with respect to the horizontal.

The horizontal locking member 8 is also integrally formed with the back plate 1, and as shown in FIGS.
The inner claws 14 are engaged from the inside of the loop and the outer claws 15 are engaged from the outside. The inner and outer claws 14, 15 are provided with a pair of reinforcing upper and lower ribs 16, 15.
17 are integrally connected. At this time, similarly to the upper locking body 7, the thickness t3 and the lateral width w3 of the rib 16 in the inner holding claw 14 are set to be large, and the inner holding claw 14 is formed to be undeformable. By setting the thickness dimension w4 and the left-right width dimension w4 of the rib 17 of the outer clamping claw 15 to small dimensions, the linear body 5 can be connected to the inner and outer clamping claws 14, 15 against the elasticity of the outer clamping claw 15 alone. It is configured so that it can be pushed and engaged between them.

In this horizontal locking member 8 as well, an inclined guide surface in which the interval between the inner and outer clamping claws 14 and 15 is increased in the vertical direction on the inclined surface at the tip of the inner and outer clamping claws 14 and 15. By forming 14a and 15a,
Even when the linear body 5 is inclined with respect to the vertical line as shown by the one-dot chain line and the two-dot chain line in FIG.
The fitting between 4 and 15 is guided.

The lower locking member 9 is formed separately from the backrest plate 1, and as shown in FIG. 8, the backrest plate is provided at the base of the pair of inner and outer holding claws 18 and 19 with respect to the linear body 5. 1
The locking claws 21 are formed integrally with each other, and are formed of a synthetic resin of a material which is difficult to set. The lower locking body 9 is formed so that both the inner and outer holding claws 18 and 19 can be elastically deformed.

In the above configuration, the cushion body 2 is brought into contact with the back plate 1 and the linear body 5 is pressed toward the back plate 1 in the order of the upper part, the right and left sides, and the lower part. Can be attached to the backrest plate 1. That is, at the stage of pressing the upper part of the linear body 5 and the left and right sides, the lower part of the linear body 5 is not engaged with the lower locking body 9, and the linear body 5 moves radially outward. When the upper portion and the left and right side portions of the linear body 5 are pressed against the backrest plate 1, the outer holding claws 11 and 15 of the upper locking body 7 and the horizontal locking body 8 become elastic. Deformed, linear body 5
The upper part and the right and left sides of the linear body 5 are engaged with the upper locking body 7 and the horizontal locking body 8, respectively.
When pressed against the inner and outer clamping claws 18, 1 of the lower locking body 9.
9 is opened and deformed, and the linear body 5 is engaged with the lower locking body 9.

Since the inner holding claws 10 and 14 of the upper locking body 7 and the horizontal locking body 8 cannot be elastically deformed, a person leans on the backrest with the cushion body 2 attached, and Inner holding claws 10, 1 of the stopper 7 and the lateral locking body 8
Even if the force which bends this repeatedly acts on 4, the inner clamps 10 and 14 of the upper locking body 7 and the horizontal locking body 8 do not slack, and the linear body 5 is locked by each locking. Since it can be engaged with the bodies 7, 8, 9 without loosening, the mounting strength of the cushion body 2 can be improved.

In particular, when the upper and horizontal locking members 7 and 8 are integrally formed with the backrest plate 1, even when the backrest plate 1 is formed of a synthetic resin such as polypropyne which is easily slid, Since the horizontal locking members 7 and 8 do not become slack, it is more effective. As in the above-described embodiment, the outer holding claws 11 and 15 that are elastically deformable are formed on the upper and horizontal locking members 7 and 8, and the linear body 5 from a direction orthogonal to the backrest plate 1 is formed.
When the linear member 5 is configured to engage with the upper locking member 7 and the horizontal locking member 8 by pushing in, the linear member 5 is simply pressed against the backrest plate 1 and the cushion member 2 is pressed. Has the advantage that the mounting operation can be further speeded up.

The lower locking member 9 may be formed of a metal which is difficult to set. FIG. 13 shows the upper locking body 7.
Is formed in a substantially upward hook shape so that the linear body 5 is fitted between the inner and outer sandwiching claws 10 and 11 from substantially above. Can be prevented more reliably. In addition, the lateral locking body 8 may also have such a form.

In the above embodiment, six locking members are provided at four portions of the backrest plate 1. In the present invention, it is sufficient to provide at least three locking members. Also,
Although the above embodiment is applied to the backrest, it goes without saying that the present invention can also be applied to the case where the cushion body is attached to the seat plate.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a cushion body is removed from a backrest plate.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a partially cutaway front view of a backrest.

FIG. 4 is a front view of the upper locking body.

FIG. 5 is a perspective view of an upper locking body.

FIG. 6 is a front view of the lateral locking body.

FIG. 7 is a perspective view of a lateral locking body.

FIG. 8 is an exploded perspective view of a lower locking body.

FIG. 9 is a sectional view taken along line IX-IX of FIG.

FIG. 10 is a sectional view taken along line XX of FIG. 3;

FIG. 11 is a sectional view taken along line XI-XI of FIG. 3;

FIG. 12 is a sectional view taken along line XII-XII of FIG. 3;

FIG. 13 is another view of the upper locking body.

FIG. 14 is a partial perspective view showing a conventional example.

FIG. 15 is a side view of the backrest.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Backrest plate 2 Cushion body 5 Linear body 7,8,9 Locking body 10,14,18 Inner holding claws 11,15,19 Outer holding claws

Claims (1)

(57) [Scope of request for utility model registration] 1. A loop-shaped linear body extending along the outer periphery of the cushion body is irremovably disposed on the back side of the cushion body in the chair, and the front or seat of a backrest plate to which the cushion body is attached. A chair provided with at least three locking members for the linear body at positions corresponding to the linear body on the upper surface of the plate so that the linear body cannot be detached in a radially outward direction; One of the locking members is formed with a pair of inner and outer clamping claws which are engaged with the linear body against the elasticity from both sides of the inner and outer loops. A device for mounting a cushion body in a chair, wherein an inner holding claw which is not elastically deformable and is engaged with the linear body from inside a loop of the linear body is formed.