JPH0517967Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a chair equipped with a backrest and a seat made of a cushion material stretched on one surface of the core plate. The present invention relates to a device for attaching a cover body to a vehicle.

[Conventional technology]

As described above, as a means for attaching a cover body to a core plate of a backrest, a seat body, etc., Japanese Utility Model Publication No. 18729/1987 as a prior art discloses a method for attaching a cover body to a core plate of a backrest, a seat body, etc. via a connecting tool attached to a core plate. It is stated that.

That is, in this prior art, a connecting tool is formed in a form in which a flange section is connected to one end of a cylindrical boss section, and the boss section of this connecting tool is inserted into a through hole drilled in a core plate, and the other end of the core plate is connected to a flange section. The flange portion of the connecting tool is fixed to the other surface of the core plate with rivets, and the inner circumferential surface of the boss portion is made such that the inner diameter decreases toward the tip. While the tapered surface is formed, the inner surface of the cover body is provided with rod-shaped engagement protrusions divided into a plurality of pieces by grooves so that the engagement protrusions become narrowed and deformed and fit into the boss portion of the connector. An annular groove is formed on the outer circumferential surface of the engagement protrusion to engage with the inner circumference of the tip of the boss, so that the engagement protrusion cannot be removed from the boss of the connector. It was designed so that

[The problem that the idea aims to solve]

According to this prior art, simply by overlapping the cover body on the other surface of the core plate and pushing the engagement protrusion protruding from the inner surface of the cover body into the boss part of the coupling tool, the cover body can be attached with one touch. Although this prior art has the advantage that it can be easily attached, on the other hand, since the connecting device is fixed to the core plate with rivets, it takes time and effort to install the connecting device, and as a result, it becomes difficult to assemble the backrest and seat body. There was a problem that it took a lot of time.

The present invention aims to solve this problem.

[Measures to solve problems]

In order to achieve this object, the present invention provides an attachment device for attaching a cover body to one side of a core plate having a cushioning material stretched over the other side thereof via a connecting fitting made of an elastic plate attached to the core plate, the connecting fitting being formed into a form in which a tubular portion that fits into a through hole drilled in the core plate and a flange portion that abuts the other side of the core plate are integrally connected, and the tip of the tubular portion of the connecting fitting opposite the flange is formed with an outwardly extending locking piece that protrudes radially outward so as to engage with one side of the core plate, and is formed in a deformed radially inward state so that it can be inserted into the through hole, and further, inwardly extending locking pieces are formed at multiple locations along the circumferential direction of the tubular portion of the connecting fitting, and engaging protrusions are provided on the inner surface of the cover body at locations corresponding to the connecting fitting, so as to be elastically clamped by the tips of each inwardly extending locking piece of the connecting fitting.

[Functions and effects of the idea]

In this configuration, the cylindrical part of the connecting fitting is inserted into the cylindrical part of the core plate from the other surface of the core plate with the outward locking piece of the cylindrical part deformed inwardly against elasticity. When pushed in, the outward locking piece of the cylindrical part deforms so as to fall radially inward, and then returns to its original state at the same time as the cylindrical part is pushed in, causing the outward locking piece to collapse. is engaged with one surface of the core plate, and the connecting fitting is attached to the core plate.

In other words, the connecting fitting can be attached to the core plate with one touch.

In addition, the cover body is stacked on the other surface of the core plate, and the engaging protrusion protruding from the inner surface is inserted into the cylinder of the connecting metal fitting while the inward locking piece of the cylindrical part of the connecting metal fitting is elastically deformed. By pushing it into the shaped part, the cover body can be attached to the core plate with one touch.

When the cover is attached, the inward locking piece of the cylindrical part of the connecting fitting is inclined so as to extend toward the distal end of the cylindrical part. When a force is applied to pull it out from the cylindrical part, each locking piece becomes taut against the outer surface of the engaging protrusion, and the engaging protrusion is firmly held by each inward locking piece. Therefore, the engagement protrusion is held against the connecting fitting so that it cannot be removed.

As described above, according to the present invention, since it is possible to attach the connecting fittings to the core plate and the cover body to the core plate in one touch, it is possible to improve the efficiency of assembling the backrest and seat of the chair. have

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

1 to 5 show a first embodiment,
In these figures, reference numeral 1 indicates a chair having a backrest 3 provided behind a seat plate 2 so as to be tiltable back and forth. The backrest 3 includes a core plate 5 arranged above the rear part of the seat plate 2 via a connecting rod 4 attached to the lower surface of the seat plate 2, and a cushion material 6 stretched on the front surface of the core plate 5.
and a synthetic resin cover body 7 attached to the back surface of the core plate 5.

Through holes 9 are bored at the four corners of the core plate 5, and the connecting fittings 10 are attached to the core plate 5 through the through holes 9.

The connecting fitting 10 is made of an elastic metal plate such as spring steel, and has a petal-shaped flange that contacts the back surface of the core plate 5 at one end of a cylindrical portion 10a that is inserted into the through hole 9. While the piece 10b is bent radially outward, a foot portion 10c is extended from the other end of the cylindrical portion 10a, and the tip of the foot portion 10c is configured to engage with the front end surface of the core plate 5. The outward locking piece 10d has a chevron shape when viewed from the side and is formed by bending.

Further, on the inner surface of the cylindrical portion 10a of the connecting fitting 10, inward locking pieces 10e extending in an inclined shape toward the front surface of the core plate 5 are provided at three locations approximately equally spaced apart along the circumferential direction. form.

On the other hand, on each part of the inner surface of the cover body 7 corresponding to each of the connecting fittings 10, the inward locking pieces 10e of the connecting fittings 10 are fitted into the cylindrical part 10a with the inwardly directed locking pieces 10e expanded radially outward. A cylindrical engaging protrusion 8 is provided to protrude forward. An annular engagement groove 8a is formed on the outer peripheral surface of the tip of the engagement protrusion 8.

In the above configuration, the cylindrical portion 1 of the connecting fitting 10
When 0a is pushed into the through hole 9 from the back side of the core plate 5, each outward locking piece 10d narrows and deforms radially inward, and then, at the same time as it is pushed all the way, each outward locking piece 10d narrows. It is restored to its original deformed state, and each outward locking piece 10d engages with the front surface of the core plate 5, whereby the connecting fitting 1
0 is irremovably attached to the core plate 5.

Then, when the engaging protrusion 8 of the cover body 7 is inserted into the cylindrical portion 10a of the connecting fitting 10, each inward locking piece 10e as a whole extends in a tapered shape toward the distal end. , the engagement protrusion 8 is held between the tips of the inward locking pieces 10e.

In this case, each inward locking piece 10 of the connecting fitting 10
e extends radially inward toward the distal end of the cylindrical portion 10a, so when an attempt is made to pull out the engagement protrusion 8, each inward locking piece 10e is stretched against the engagement protrusion 8. state, each inward locking piece 1
Since the engagement protrusion 8 is more firmly clamped at the position 0e, the engagement protrusion 8 is reliably held in a state where it cannot be removed.

6 and 7 show a second embodiment.

In this second embodiment, the engagement protrusion 8 is
A spherical support 11 formed into a rod shape with a head 8b separate from the cover body 7 and fixed to the inner surface of the cover body 7
By enveloping and supporting the head 8b, the engaging protrusion 8 is configured to be able to tilt vertically and horizontally. With this configuration, even if the axis of the through hole 9 and the mounting direction of the cover body 7 are not parallel, the engaging protrusion 8 can be inserted in a posture parallel to the axis of the through hole 9, so that the cover body 7 can be inserted. This has the advantage of making installation easier.

In this case, similarly to the first embodiment, an engagement groove may be formed on the outer surface of the engagement protrusion 8, or, as shown in FIG. 8, the engagement protrusion 8 may be formed with a thicker end. It is also possible to improve the retaining effect.

The outward locking piece 10d of the connecting fitting 10 may be formed by simply bending outward as in the third embodiment shown in FIG. Note that the through hole 9 may be formed into a stepped hole such that the front side of the core plate 5 has a larger diameter, and the outward locking piece 10d of the connecting fitting 10 may be locked to the stepped portion. .

Needless to say, the mounting device of the present invention can be applied not only to attaching a cover body to a backrest, but also to attaching a cover body to the lower side of a seat plate whose upper surface is covered with cushion material. Nor.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of a connecting fitting according to the first embodiment, FIG. 2 is a side view of the main parts of the chair, and FIG. 3 is a back view of FIG. ,
4 is an enlarged sectional view of FIG. 3, FIG. 5 is a sectional view of FIG. 4, FIG. 6 is a sectional view of the main part of the second embodiment, and FIG. View, 8th
The figure is a diagram of another example of the engaging protrusion, and FIG. 9 is a sectional view of the main part showing the third embodiment. 1...Chair, 2...Seat board, 3...Backrest, 5
... Core plate, 6 ... Cushion material, 7 ... Cover body, 8 ... Engagement projection, 9 ... Through hole, 10 ... Connection fitting, 10a ... Cylindrical part, 10d ... Outward locking Piece, 10e...Inward locking piece.

Claims (1)

[Scope of utility model registration request] A mounting device for mounting a cover body on the other surface of a core plate having a cushion material stretched on one surface via a connecting fitting made of an elastic plate attached to the core plate, the mounting device comprising: The connecting fitting is formed in a form in which a cylindrical part that fits into the through hole bored in the core plate and a flange part that comes into contact with the other surface of the core plate are integrally connected. An outward locking piece protrudes radially outward so as to engage with one surface of the core plate at the tip of the shaped part on the opposite side from the flange. Further, inward locks extending diagonally inward toward the distal end of the cylindrical portion are formed at a plurality of circumferential portions of the cylindrical portion of the connecting fitting. an engaging protrusion that is elastically held at a tip of each inward locking piece of the connecting fitting is provided on a portion of the inner surface of the cover body corresponding to the connecting fitting. A device for attaching a cover body to a chair, characterized in that: