JP2737737B2 - 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 chair for simplifying an assembling operation at the time of construction.

[0002]

2. Description of the Related Art As one type of chair, there is known a chair constituted by attaching a chair body unit to a leg as a support member using a connecting tool such as a bolt. In this type of chair, a mounting piece for mounting the chair body unit is projected from a front end of a side wall of the leg, and a rear surface of the rear wall of the chair body unit is attached to a front surface of the mounting piece to attach the mounting piece. The back support member is attached to the support member by connecting the rear wall and the rear wall with a connector.

[0003]

The chair body unit needs to have sufficient rigidity to support the seat and the backrest, and is usually made of a heavy material such as aluminum die-cast. . However, when the chair body unit is attached to the legs in a conventional manner, the chair body unit is gripped by hand and held at a position adjacent to the legs,
It is necessary to carry out the fastening operation of the connecting tool while maintaining the state. Therefore, there is a problem that a great deal of labor and time are required for the assembling work at the time of construction. Also,
Since the joint between the mounting piece and the chair body unit is exposed to the outside, the appearance of the chair is also easily impaired. Furthermore, since the chair body unit interferes with the leg at a position where the outer wall surface of the chair abuts on the front end surface of the leg body and cannot be positioned further rearward, the mounting piece is located at the rear wall of the chair body unit at that position. It is customary to be configured to adhere to the outer surface. For this reason, in such an attachment structure, the leg always projects greatly behind the chair, and there is a problem that a pedestrian is easily obstructed in an installation place where the back of the chair is a passage.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention does not attach the outer surface of the outer wall of the chair body unit to the mounting piece of the support member, but mounts the chair body unit on the support member. Then, the rear wall is brought into close contact with the back surface of the mounting piece of the support member, and the load of the chair body unit is loaded on the support member at that position. For this reason, it is no longer necessary to artificially carry the chair body unit thereafter.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A chair according to the present invention is constituted by attaching a chair body unit to a support member. A hollow portion that opens at least at the lower end is formed in the main unit.
Then, when the chair body unit is at least partially covered from above to the position where the mounting piece is inserted into the hollow portion, the chair body unit removes a part of the rear wall surrounding the hollow portion. The support member is in close contact with the back surface of the mounting piece and is supported by the support member.

In order to reliably guide the chair body unit to the predetermined mounting position, a guide member for forming a gap between the chair body unit and the rear wall is formed in the hollow portion of the chair body unit. It is effective to insert the mounting piece of the support member into the gap with the wall to position the chair body unit at a predetermined mounting position with respect to the support member. At this time, in order to facilitate the work, it is desirable that the gap between the guide member and the rear wall is set so as to be gradually narrowed in the insertion direction of the mounting piece.

In order to effectively prevent the support member from projecting rearward from the chair, an opening is formed in the center of the rear wall surrounding the hollow portion of the chair body unit to open the hollow portion rearward. It is effective to form and set the width of the opening to be larger than the width of the support member.

In such a configuration, when the chair body unit is put on the support member from above, the chair body unit is supported by the support member at a mounting position where the rear wall is in close contact with the back surface of the mounting piece of the support member. For this reason, after that, the connection work between the mounting piece and the rear wall can be performed while the load of the chair body unit is supported by the support member, and the necessity of continuing to carry by hand can be eliminated. In addition, since the mounting piece and the chair body unit are joined in the hollow portion and are not exposed to the outside, the appearance is also good.

When the guide member is formed in the hollow portion of the chair body unit, the mounting piece of the support member is inserted into a gap between the guide member and the rear wall when the chair body unit is put on the support member from above. As a result, the chair body unit is guided and positioned to the predetermined mounting position. If the gap is gradually narrowed, even if the chair body unit approaches the support member relatively casually,
The chair body unit can be guided to an appropriate mounting position.

When the opening having the above-mentioned width is formed in the center of the rear wall, a part of the support member can be introduced into the hollow portion of the chair body unit through the opening. For this reason, it is possible to effectively prevent the support member from protruding greatly behind the chair.

[0011]

An embodiment of the present invention will be described below with reference to the drawings.

The chair C shown in FIGS.
It is assembled together with a support member 1 and a chair body unit 2 to be installed in a school or the like for use.

The support member 1 comprises a base 11 fixed to the floor F and a leg pipe 12 standing upright from the longitudinal center of the base 11, and a chair body is provided at the front end of the leg pipe 12. The unit 2 is attached.
For this purpose, a mounting piece 13 or 14 is rigidly connected to the leg pipe 12. The one mounting piece 13 is applied to the chair C arranged in the middle row, has a flat shape as shown in FIGS. 4 and 9 to 11, and is rigidly connected to the front wall of the leg pipe 12. Further, the other mounting piece 14 is applied to the chair C arranged in the last row, and has a L as shown in FIGS.
It is shaped like a letter and is rigidly connected to the side wall of the leg pipe 12. The surface directions of the face plates of these mounting pieces 13 and 14 are vertically oriented.

The chair body unit 2 is common to chairs arranged in any row, and comprises a frame 3 attached to a leg pipe 12, a seat 4 supported by the frame 3, and a backrest 5. As shown in FIGS. 4 to 8, the frame 3 is made of a material having high rigidity, such as aluminum die-cast, and has an intermediate portion 31 a extending in the vertical direction, and a front portion of the intermediate portion 31 a. Front part 31 that projects in a U-shape toward the front
b and left and right side walls 31 having a rear half portion 31c protruding rearward in a trapezoidal shape, and a front wall 32 disposed at a position to close between the upper ends and the front ends of the front half portions 31b of the left and right side walls 31. And an intermediate wall 33 disposed at a position connecting the intermediate portions 31a, and a rear wall 34 bent in an inverted L-shape disposed at a position closing the rear end of the rear half portion 31c. The seat 4 shown in FIG. 1 is pivotally supported by a hole 31d provided in the vicinity of the front half 31b of the side wall 31 of the frame 3 so as to be able to perform a rising operation. It is fixed using. The U-shaped portion of the front wall 32 is an escape for avoiding interference with the rear end of the seat 4 when the seat 4 performs a rising operation.

The left and right side walls 31 and the front wall 3 of the frame 3
2. A portion surrounded by the intermediate wall 33 and the rear wall 34 forms a hollow portion 35 therein.
Is opened downward. For example, in the chair C arranged in the middle row, the width dimension L1 of the hollow portion 35 is set slightly larger than the separation dimension D1 between the outer edges 13a of the mounting pieces 13. A horizontal downward locking surface 34a is formed near the bent portion of the rear wall 34 surrounding the hollow portion 35, as shown in FIGS. The distance L2 to the lower end of the frame is set to be substantially equal to or slightly larger than the distance D2 from the upper end 13b to the lower end 13c of the mounting piece 13.

A guide member 36 which forms a gap S between the hollow portion 35 and the rear wall 34 is provided so as to protrude inward from the inner surface of the side wall 31. This guide member 36
Is a plate-like member whose upper end is inclined closer to the rear wall 34 than the lower end. At the upper end where the gap S with the rear wall 34 is the smallest, the gap S is Is set to be slightly larger than the wall thickness dimension.

Further, an opening 37 is formed in the center of the rear wall 34 of the frame 3 in the width direction to open the hollow portion 35 rearward as shown in FIGS. The opening 37 has a wide opening 3 that also opens at the lower end side.
Above 7a, a narrow opening portion 37b is continuously provided. The width L3 of the opening 37b is set slightly larger than the width D3 of the leg pipe 12, and the width L4 of the opening 37a is It is set larger than the width dimension D4 of the base 11.

As shown in FIGS. 9 to 11, the frame 3 constituting the chair body unit 2 is partially covered from above with the leg pipe 12 so that the frame 3 is supported by the leg pipe 12. ing. That is,
When the frame 3 is supported and lowered from above so that the mounting piece 13 fixed to the front end side of the leg pipe 12 is inserted into the hollow portion 35 of the frame 3, the mounting piece 13 It enters the gap S with the rear wall 34 and invades as it goes to the back, and finally the upper end 13 b of the mounting piece 13.
Is forcibly stopped at a position where it contacts the downward locking surface 34a of the rear wall 34, and the load of the frame 3 is loaded on the leg pipe 12 at that position. When the mounting piece 13 of the leg pipe 12 is sandwiched in the gap S between the guide member 36 and the rear wall 34, the rear surface of the mounting piece 13 is almost in close contact with the front surface of the rear wall 34. Therefore, even if the worker releases his hand from the frame 3 in this state, the frame 3
Will not be dropped or displaced, and will be temporarily held at that position. Then, the bolt V is inserted from the back side into the bolt insertion hole 34b provided in the rear wall 34 and fastened to the screw hole 13d provided at the corresponding position of the mounting piece 13 to attach the frame 3 to the leg pipe 12. Can be completed.

With such a configuration, after the frame 3 is grasped by hand and put on the leg pipe 12 from above, the worker does not need to carry the frame 3 and the load is applied to the leg pipe 12. The connection work between the mounting piece 13 and the rear wall 34 can be performed while the support is maintained. Therefore, even when the frame 3 is made of a heavy material as in this embodiment, the labor and time required for the assembling work at the time of construction can be significantly reduced as compared with the related art.
Moreover, since the mounting piece 13 and the frame 3 are joined in the hollow portion 35 and are not exposed to the outside, the appearance is also good.

Further, in this embodiment, since the guide member 36 is provided inside the hollow portion 35 of the frame 3, when the frame 3 is put on the leg pipe 12 from above, the guide member 3
The mounting piece 13 of the leg pipe 12 is inserted into the gap S between the rear wall 6 and the rear wall 34, whereby the frame 3 is guided and positioned to a predetermined mounting position. Moreover, since the gap S is set so as to be gradually narrowed in the insertion direction of the mounting piece 13, even if the frame 3 is relatively casually approached to the leg pipe 12, the frame 3 can be properly positioned. Can be reliably guided.

On the other hand, FIGS. 12 to 14 show a procedure for attaching the frame 3 relating to the chair C in the last row to the leg pipe 12. FIG.
11, the mounting piece 14 used for the chair C in the last row has an L-shape as described above, and is attached to an intermediate portion of the side wall of the leg pipe 12 in the front-rear direction. ing. For this reason, when the frame 3 is put on the leg pipe 12 from above until the mounting piece 14 is inserted into the hollow portion 35, the rear wall 34 is in close contact with the back surface of the mounting piece 14, and the downward locking surface 34a In addition to being loaded on the upper end 14b of the piece 14, the leg pipe 12 is inserted deeply into the hollow portion 35 of the frame 3 through the opening 37b at the mounting position. Therefore, it is possible to effectively prevent the leg pipe 12 and the like from protruding greatly behind the chair C, and it is possible to effectively eliminate a situation that hinders a pedestrian.

Further, in this embodiment, since the opening portion 37a which is wider than the base 11 is provided below the opening portion 37b, when the chair C is installed on the floor A as shown in FIG. , The hollow portion 3 through the opening portion 37a.
It is also possible to install the base 11 directly on the corrugated floor A while holding the tip of the base 11 inside the base 5. As described above, the chair of the present invention can be applied to a wide range of uses, and can be extremely useful in reducing costs by sharing parts.

The specific configuration of each part is not limited to only the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0024]

The present invention is embodied in the above-described embodiment, and has the following effects.

That is, in the chair of the present invention, the chair body unit is put on the support member from above, so that the rear wall is brought into close contact with the back surface of the mounting piece of the support member, and the load of the chair body unit is applied to the support member at that position. It is intended to be loaded. For this reason, after that, it is possible to concentrate on the connection work between the chair body unit and the mounting piece without continuing to carry the chair body unit. For this reason,
The efficiency and labor of the assembling work at the time of construction can be greatly improved as compared with the related art. In addition, since the joint between the chair body unit and the support member is located in the hollow portion and is not exposed to the outside, the appearance of the entire chair can be effectively improved.

In particular, if the mounting piece of the support member is inserted into the gap between the guide member and the rear wall, the positioning of the chair body unit with respect to the support member can be easily and reliably performed. If the gap is gradually narrowed in the insertion direction of the mounting piece, the chair body unit can be reliably guided to the predetermined mounting position even by relatively casual work, and the working efficiency is further improved. It becomes possible.

If an opening is formed in the center of the rear wall and a part of the support member is introduced into the hollow portion through the opening, the support member is prevented from projecting to the rear of the chair. In addition, it is possible to effectively improve a problem that hinders walking or the like.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of the present invention in one use state.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is an exploded perspective view showing the chair body unit of the embodiment.

FIG. 5 is a front view of a frame constituting the chair body unit.

FIG. 6 is a right side view of the same.

FIG. 7 is a plan view of the same.

FIG. 8 is a rear view of the same.

FIG. 9 is a view showing a state before mounting of the frame in the embodiment in a cross section along a fastening portion.

FIG. 10 is a view showing a state after mounting the frame in the embodiment in a cross section along a fastening portion.

FIG. 11 is a sectional view taken along line XI-XI in FIG. 6;

FIG. 12 is a view corresponding to FIG. 9 showing a chair in the last row of the embodiment.

FIG. 13 is a view corresponding to FIG. 10 showing a chair in the last row of the embodiment.

FIG. 14 is a view corresponding to FIG. 11 showing a chair in the last row of the embodiment.

FIG. 15 is a diagram showing an attached state when the embodiment is installed on a corrugated floor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Support member 2 ... Chair body unit 13, 14 ... Mounting piece 34 ... Rear wall 35 ... Hollow part 36 ... Guide member 37 ... Opening C ... Chair S ... Gap

Claims (4)

(57) [Claims] 1. A chair constituted by attaching a chair body unit to a support member, wherein a mounting piece for attaching the chair body unit is projected from the support member, and at least a lower end is provided on the chair body unit. When the chair body unit is covered from above on the support member to a position where the attachment piece is inserted into the hollow part, the chair body unit is
A chair characterized in that a part of a rear wall surrounding the hollow portion is brought into close contact with a back surface of a mounting piece of the support member so as to be supported by the support member. 2. A guide member for forming a gap between the chair body unit and the rear wall is formed in a hollow portion of the chair body unit, and a support member is provided in a gap between the guide member and the rear wall at a mounting position of the chair body unit. 2. The chair according to claim 1, wherein the mounting piece is inserted. 3. The chair according to claim 2, wherein the gap between the guide member and the rear wall is set so as to be gradually narrowed in the insertion direction of the mounting piece. 4. An opening is formed at the center of a rear wall surrounding the hollow portion of the chair body unit to open the hollow portion rearward, and the width of the opening is larger than the width of the support member. The chair according to claim 1, 2 or 3, wherein the chair is set large.