JPH0751000Y2 - Chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a chair, and more particularly to a learning chair having a rectangular tray under the legs for accommodating school supplies and the like.

2. Description of the Related Art Conventionally, this type of chair is equipped with a tray as follows. That is, outwardly projecting supported edges are provided at the upper edges of the opposing rising portions of the trays, and these supported edges are installed in the front and rear parallel positions of the chair legs. It is designed so that it is supported on the upper surface of each crosspiece.

However, the chair described above has a drawback that the tray is easily dropped from the chair because the chair only supports the supported edge portion of the tray on the upper surface of the crosspiece.

Then, by screwing the tray to the crosspiece,
It may be possible to prevent the tray from falling off, but in that case, it will be troublesome to attach and detach the tray.

The present invention has been made in view of the above problems, and an object thereof is to make it possible to install and remove a tray on a chair extremely easily, and to provide a chair that does not drop the tray after the installation. To provide.

Therefore, the chair according to the present invention has a rectangular tray made of synthetic resin, and the tray is supported on the upper edges of the rising portions of the tray main body which face each other so as to project outward. The tongue-shaped elastic locking pieces that are outwardly curved are provided on the outer surface of the rising portion at a position lower than the supported edge portion, respectively. Due to the elastic deformation of the elastic locking pieces, a pair of bars, which are laid in parallel to each other at positions below the legs of the chair, are forcibly fitted between the supported edge portion and the tongue-shaped elastic locking pieces. It is a gist that the tray is mounted in a locked state with respect to the crosspiece by fitting them together.

Action With the above chair, the tray is equipped to the chair as follows. First, the tongue-like elastic locking pieces are brought into contact with the crosspieces from above. Then, the tray is pressed downward. Then, the tongue-shaped elastic locking piece is bent inward by the reaction force from the crosspiece until the tip of the locking piece crosses over the innermost part of the crosspiece. Then, the tongue-shaped elastic locking piece is restored to the original state after passing through the crosspiece, and the crosspiece is located between the tongue-shaped elastic locking piece and the supported edge portion, and the tray is in the installed state. Become.

When removing the mounted tray, bend both tongue-shaped elastic locking pieces inward with fingers until the tips of the tongue-shaped elastic locking pieces move further inward than the innermost part of the crosspiece. While the lock is released, the tray is pulled up and removed.

On the other hand, when an unintended force acts in the direction of removing the tray from the rail after it is in the equipped state, the tongue-shaped elastic locking piece contacts the rail and keeps the tray in the loaded state.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 to 6 show an embodiment of the present invention.
In FIG. 1, (1) is a learning chair, and the legs (3) extending downward from the four corners of the seat (2) of the learning chair (1) ... ) (4) are installed respectively. Each of these crosspieces (4) and (4) has a circular cross section and extends parallel to each other in a horizontal plane at a predetermined height position from the floor surface. The tray (6) is attached to these crosspieces (4) (4) in a locked state.

The tray (6) is shown in each of FIGS. 2 to 4. The tray (6) is made of synthetic resin. (7) is a tray body, in which a rising part (9) is provided on the periphery of a rectangular bottom part (8). In the rising portion (9), supported edges (10) and (10) are provided outwardly at the upper edges of the rising portions (9a) and (9a) facing each other in the vertical direction in FIG. Has been. These supported edges (10) (10) are the tray (6)
The crosspiece (4) when the learning chair (1) is equipped with
It will be supported on the upper surface of (4). Further, as shown in FIG. 2, upwardly projecting tongue-shaped elastic locking pieces (11) (11) which are curved outward are provided at the central positions of the rising portions (9a) (9a) in the longitudinal direction, respectively. ing. This tongue-shaped elastic locking piece (11) (11) is a tongue-shaped elastic cut piece (11) (11) obtained by forming downward U-shaped cuts (12) (12) in the rising portions (9a) (9a). By forming the parts (13) and (13) outwardly in a curved shape, as shown in FIG. 3, the parts (13) and (13) are provided so as to project upward and outward from the rising parts (9a) and (9a). There is. Since the tongue-shaped elastic locking piece (11) is formed into the outwardly curved shape as described above, the crosspiece (4) of the chair (1) is provided.
The tray (6) can be attached and detached to and from (4) smoothly and smoothly, and the tray (6) can be more surely prevented from being unintentionally detached after being attached. .

Note that the rising portions (9b) facing each other in the left-right direction in FIG.
Also in (9b), as shown in FIG. 4, supported edges (14) and (14) protruding outward are provided. These supported edges (14) and (14) are installed on the lower part of the legs (3) of the learning chair (1) when the tray (6) is mounted on the learning chair (1). It will be supported on the upper surfaces of the crosspieces (5) (5).

To equip the learning chair (1) with the above tray (6),
Do the following: First, as shown in FIG. 1, the tray (6) is positioned below the seat portion (2) of the learning chair (1), and as shown in FIG. 5, the tongue-shaped elastic locking pieces (11) (11). ) Are brought into contact with the front and rear crosspieces (4) and (4), respectively. Then, the tray (6) is pressed downward. Then, as shown in FIG. 6, the tongue-like elastic locking pieces (11) (1
Elastic deformation is performed so that 1) rises upward due to the reaction force from the crosspieces (4) and (4). When the pressure is further increased, the seventh
As shown in the figure, the tongue-like elastic locking pieces (11) (11) separate from the crosspieces (4) and (4), respectively, so that the crosspieces (4) and (4) move to the tongue-like elastic locking pieces (11). It is located between the (11) and the supported edge portions (10), (10), and the tray (6) is in an equipped state.

When removing the equipped tray (6), the tongue-shaped elastic locking pieces (11) (11) are moved further inward from the innermost portions of the crosspieces (4) (4). The tray (6) is pulled up and removed while bending the both tongue-like elastic locking pieces inward with fingers.

On the other hand, even if the chair (1) is placed horizontally or upside down, and the tray (6) in the equipped state receives an unintended removal force, the tongue-like elastic locking piece ( 11) (11)
Abuts the crosspieces (4) (4) and keeps the tray (6) in the equipped state. Therefore, the equipped tray (6) does not fall off the chair (1).

In the learning chair according to the above-mentioned embodiment, the tray (6) is brought into contact with the crosspieces (4) and (4), and thereafter, the tray (4) is simply pressed downward to engage the crosspieces (4) and (4). When the tongue-shaped elastic locking pieces (11) (11) are pushed inward with fingers when locked, the tongue-shaped elastic locking pieces (11) (11) are locked without hitting the crosspieces (4) (4). It can be in a released state, and the tray (6) can be easily attached and detached without any trouble. Further, since the tray (6) is entirely made of synthetic resin, it can be integrally molded and can be easily manufactured.

In the above embodiment, the tray (6) is locked to the front and rear crosspieces (4) and (4).
A structure in which the tray (6) is locked to the left and right crosspieces (5) and (5), and the front and rear crosspieces (4) and (4) and the left and right crosspieces (5)
The tray (6) can be locked to all of (5). In the above embodiment, the tongue-shaped elastic locking piece (11) is provided at one central portion in the longitudinal direction of the rising portions (9a) (9a).
It is also possible to provide a plurality of tongue-shaped elastic locking pieces (11) in the longitudinal direction of the rising portions (9a) (9a). In the illustrated embodiment, the tongue-like elastic locking piece (11) is
The rising portions (9a) (9a) are provided with cuts (12) (12), and when the tray (6) is removed, the tongue-shaped elastic locking pieces (11) are inwardly moved. Although it is preferable that the collapse deformation is not limited by the rising portion (9a), the tongue-shaped elastic locking piece (11) as an independent member may be attached to the outer surface of the rising edge portions (9a) (9a). It is possible.

Effects of the Invention As described above, in the chair of the present invention, the tongue-like elastic locking pieces are brought into contact with each of the bars from above, and the tray is simply pressed downward to the bars. Since the tray is locked, the tray can be attached to the chair smoothly and easily without requiring any trouble.

Further, when the tray is pulled up while the tongue-shaped elastic locking piece is tilted inward with a finger to bring the tray into the unlocked state, the tray can be easily removed without contacting the elastic locking piece with the crosspiece.

In addition, even after an unintended force is applied in the direction of removing the tray after mounting, the tray does not drop off from the chair, and the handling is easy.

[Brief description of drawings]

FIG. 1 is a perspective view of a learning chair according to an embodiment of the present invention,
FIG. 2 is a plan view of the tray of the learning chair according to the above embodiment,
3 is a sectional view taken along line III-III in FIG. 2, and FIG. 4 is I in FIG.
5 to 7 are cross-sectional views showing a process of attaching the tray to the crosspiece of the learning chair, respectively. (1) …… (learning chair) chair, (3) …… legs, (4)…
… Bar, (6) …… tray, (7) …… tray body, (9
a) …… Rise, (10) …… Supported edge, (11)…
... Tongue-like elastic locking piece.

Claims (1)

[Scope of utility model registration request] 1. A rectangular tray made of synthetic resin, wherein the tray is provided with supported edge portions protruding outward at respective upper edges of rising portions of the tray body facing each other. Upwardly projecting tongue-shaped elastic locking pieces each curved outward are provided on the outer surface of the rising portion at a position lower than the support edge portion, and by elastic deformation of the tongue-shaped elastic locking pieces, 1 is laid between the supported edge portion and the tongue-shaped elastic locking piece in a position below the leg of the chair in parallel with each other.
A chair characterized in that the tray is installed in a locked state with respect to the crosspieces by forcibly fitting the pair of crosspieces.