JP3101871B2 - Chair assembly structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling structure for a chair, and more particularly to an assembling structure for mounting an outer surface plate such as a back plate for covering the back surface of a support such as a back plate. .

[0002]

2. Description of the Related Art The back and seat of a chair are framed by a back frame or the like.
In many cases, a support body such as a back plate is attached to the system, and an external plate such as a back back plate is attached from the back side of the back plate and screwed.
In consideration of the appearance, workability, safety, reliability, etc. of the back back plate, a locking projection is provided inside the back back plate and formed on the back plate without using a conventional mounting screw. There have been known various chairs configured to engage with a locking portion.

[0003]

The above-mentioned locking projections, locking portions and the like which are generally used include a locking projection having a small projection protruding substantially like an umbrella or a claw at an end portion thereof. In many cases, the locking projection is inserted into a locking hole provided on the support body side, and the small protruding piece is engaged with an edge of the hole by engaging the small projection. However, in such a configuration, since the tip of the small protruding piece having a substantially umbrella shape or a claw shape is a free end, the strength is weak and the durability is poor. Further, if the engagement is to be released when disassembling or the like, the claw or the like is caught and cannot be easily separated, so that it is not easy to perform a separation process at the time of disposal.

[0004]

SUMMARY OF THE INVENTION The present invention provides a chair structure in which an outer plate such as a back plate is attached to a support such as a back plate as described above, and the outer plate such as a back plate can be easily and reliably attached and detached. An object is to obtain a durable chair assembly structure.

[0005]

According to the present invention, a plurality of legs are protruded from an outer plate such as a back plate with a gap toward a support body such as a back plate, and a locking rod is provided between the tips of the legs. And a receiving groove for fitting the support leg and the locking rod is provided in a support body such as the back plate,
An assembling structure of a chair provided with a locking shoulder having a length to enter the gap between the supporting legs so as to be engaged with a lower edge of the locking rod in the receiving groove, and an outer surface plate such as the back back plate or the like is provided. Can be attached to the support such as the back plate by pressing against the back side of the support such as the back plate, and the back plate can be attached to the support such as the back plate by strongly peeling. The outer panel can be removed from a support such as a back panel.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be applied to various types of chairs, such as seats and backs of a chair.
The chair shown as an example in FIG. 1 is made of a metal pipe material to form a frame (1) including a seat frame (2), a front leg (3), a rear leg (4), and a back frame (5). Seat frame (2) with seat (6)
And a back frame (5) is provided with a back (7). The back (7) has a back plate (9) provided with an appropriate surface material (8) on the surface, and a back plate (10) attached to the back of the back plate (9) (FIG. 2). In the following embodiment, a back portion having a back plate (9) as a support body and a back back plate (10) as an outer surface plate is described. However, a support portion such as a seat portion (6), an armrest portion and a chair are provided. The present invention can also be applied to the assembling structure portions at various places.

In the drawing, the back plate (9) is made of a plastic material in a hollow body having concave groove-shaped ribs (11)... At appropriate portions, and is attached to the mounting piece (12) of the back frame (5). ) ・ ・
-(See Fig. 3) is attached by a fixing tool such as a bolt (not shown), but the material and structure of the back plate can be appropriately configured.

The back back plate (10) is formed in a shape following the back surface of the back plate (9), and as shown in FIGS. ), And a plurality of legs (1) are provided at appropriate positions on the inner side with a gap (14) toward the back plate.
5) are protruded, and the distal ends of the support legs (15) are connected by a locking rod (16). As shown in an enlarged manner in FIG. 5, in the drawing, three substantially triangular plate-shaped supporting legs (15) are arranged side by side, and a locking structure having two gaps (14) and (14) between the supporting legs. As elements (17), the locking element consists of two legs (15) and one gap (1).
4) or a block having four or more legs (15) and three or more gaps (14).

The supporting leg (15) has a plate-like shape shown in FIG.
It can be formed into various shapes such as a cylinder, an ellipse, and a prism. The locking rod (16) is formed in a circular cross section as shown in FIG. 6 (A), but as shown in FIG. 6 (B). On one side of the lower edge to the arc surface (1
8), and the other side may be formed in a substantially horizontal plane (19) so as to be continuous with the side surface of the support leg (15), or may be formed in another appropriate shape. In the drawing, the supporting legs are arranged in the vertical direction so that the locking rods are directed in the vertical direction, and are provided on the back plate. However, they can be directed in an appropriate direction. May be arranged in the lateral direction as described above.

A receiving groove (20) is formed in the back plate (9) so as to fit the support leg (15) and the locking rod (16). As shown in FIG. 7, the receiving groove (20) fits with the lateral groove (21) extending in the lateral direction in the drawing into which the support legs (15) are fitted, and the locking rod (16). As shown in the drawing, there are vertical grooves (22) extending in the vertical direction, and the shapes, directions, and the like of these grooves are appropriately formed corresponding to the shapes, directions, and the like of the support legs and the locking rods.

When the locking rod (16) or the like is fitted in the receiving groove (20), the gap (14) between the legs is engaged with the lower edge of the locking rod (16). A locking shoulder (23) is provided which is long enough to penetrate. FIG. 8 is an end view for explaining the shape of each part of the receiving groove (20) . In the lateral groove (21) into which the support leg (15) enters, as shown in FIG. ) to but not part for engaging the wall portions of the longitudinal groove (22) is bent to form the locking shoulder (23) which engages with the latching rod (16). The latching shoulders (23), along the latching rod (16) as shown in the figure, FIG. (B), as shown in FIG. (C), shifting the direction of a position opposed to the engagement rod and so that provided a plurality <br/> extend alternately Te. In addition, the opening width of the receiving groove (20) is widened on the back back plate side, and is inclined (24) so as to become narrower toward the locking shoulder (23). The guide is guided to the locking shoulder (23).

As shown in FIGS. 7 and 8 (B) and 8 (C), the wall (25) opposed to the locking shoulder (23) is provided with the locking shoulder (23).
, The inclined surface (24) is formed so as to protrude slightly, but such a protruding wall surface may not be provided as shown in FIG. Also, as shown in the figure, the gap between the legs is increased, the length of the locking rod is increased, and the locking shoulders (23),
(23) may be engaged.

The locking shoulder engages with a part of the lower edge of the locking rod as shown in FIGS. 8 (B) and 8 (C). The width is determined in consideration of the elastic action such as above. As shown in the figure, if the back plate is formed as a hollow body, there is a moderate elastic action as compared with a solid body.
Further, if a slit (not shown) is provided in a part of a wall connected to the locking shoulder (23) and the locking shoulder is formed in a tongue shape, a further elastic action can be obtained.

The number of locking elements (17) of the back plate (10) and the number of receiving grooves (20) of the back plate (9) are appropriately set at corresponding positions (FIG. 3). When the (10) is pressed against the back of the back plate (9), the locking rod (16) engages with the locking shoulder (23) in the receiving groove (20), and the back back plate ( 10) can be attached to the back plate (9). At this time, since the bent peripheral edge of the back plate elastically abuts the peripheral edge of the back plate, the engagement between the locking rod and the locking shoulder is further ensured. When removing the back plate,
If an appropriate tool is inserted between the back plate and the back plate and peeled off, the locking rod can be easily removed from the locking shoulder.

[0015]

As described above, according to the present invention, a plurality of supporting legs are projected from an outer surface plate such as a back back plate with a gap therebetween, and a locking rod for connecting the tips of the supporting legs is provided. The above legs on the support body
There is formed a receiving groove having a longitudinal groove lateral grooves and engagement rod fitted is fitted, a plurality in the direction opposite to the alternating shoulders for engaging the lower edge of the latching rod in the longitudinal groove, the Since the locking shoulder has a length that enters the gap between the legs, if an outer plate such as a back plate is pressed against the back surface of the support such as the back plate, the locking rod is locked to the locking rod. The shoulders are engaged from both sides , and the back back plate or the like can be easily attached to the back plate or the like. At this time, since the locking rod has both ends connected to the supporting legs, it is strong and hard to break. Further, when the outer surface plate such as the back plate is peeled off from the support such as the back plate, the locking rod is disengaged from the locking shoulder and can be easily removed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view.

FIG. 3 is an exploded perspective view.

4A and 4B show a back plate, in which FIG. 4A is a cross-sectional view and FIG.

FIG. 5 is a perspective view showing a locking element including a support leg and a locking rod of a back plate.

FIG. 6 is a cross-sectional view of a portion such as a locking rod on a back plate.

FIG. 7 is an explanatory view of a receiving groove.

FIG. 8 is an end view of the receiving groove, where (A) is AA of FIG. 7;
7 (B) is a sectional view taken along line BB of FIG. 7, and FIG. 7 (C) is an end view taken along line CC of FIG. 7.

FIG. 9 is an explanatory view showing another receiving groove.

[Explanation of symbols]

 6 seat 7 back 9 back plate 10 back back plate 14 gap 15 support leg 16 locking rod 17 locking element 20 receiving groove 23 locking shoulder

Claims (3)

(57) [Claims] 1. A has an outer surface plate to be crimped to the scaffold and said supporting Uketamawakarada chair, at a gap toward the scaffold direction outer surface plate projecting a plurality of support legs, between the tips of該支Ashi Are connected by a locking rod, the support body is formed in a hollow body, and the support leg is fitted therein .
That the lateral grooves and the engagement rod provided receiving groove having a longitudinal groove in which is fitted, said between said support legs when is fitted the latching rod and support legs into receiving groove by crimping the outer surface plate scaffold above the length of the latching shoulders to engage the lower edge of the locking rod enters the gap
Formed in the wall portion of the vertical groove, and the locking shoulder is formed along the locking rod.
An assembling structure of a plurality of chairs provided alternately from opposite directions . 2. The receiving groove has a wide opening on the side of the outer surface plate.
The chair assembly structure according to claim 1, wherein the chair is inclined so as to become narrower toward the locking shoulder . 3. The support body is a back plate, and the outer surface plate is
The chair assembly structure according to claim 1 or 2, wherein the chair is a back plate .