JP2671845B2 - 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 used in a theater or the like.

[0002]

2. Description of the Related Art Conventionally, as chairs installed and used in a theater or hall, for example, a base having a pair of metal standing members protruding from the rear and a metal back opening at the lower end side. It is known that a support receiving member is provided and a backrest is attached to the base while the standing member is removably inserted into the back supporting receiving member. This chair makes it possible to replace the backrest when it becomes dirty or damaged by making the backrest easily removable, as well as the backrest of the chair in a frequently used and painful place. It is also useful in terms of improving the stool during rotation by appropriately exchanging the backrest of a chair in a less frequently used place.

[0003]

However, a load is repeatedly applied to the backrest with high frequency. Therefore, if the backrest is simply attached to the base via the upright member, the backrest rattles and an abnormal noise is generated between the back support receiving member and the upright member when the metal contacts. In order to eliminate such inconvenience, the head of the rivet is driven into the position where the tip of the upright member is inserted on the inner surface of the back support receiving member, and the outer edge portions of the pair of upright members are inserted through the rivet. It is possible to press the left and right inner side surfaces of the support receiving member under pressure, but this makes the structure of the back support receiving member complicated, and the rivet merely provides point contact and has a cushioning effect. Moreover, since the rivets alone are not pressed in the front-rear direction, they are insufficient as a means for preventing the generation of abnormal noise. In addition to such a problem, the work of inserting the upper end of the standing member into the lower end opening of the back support receiving member must be performed by groping at a position that cannot be visually recognized. There is also a problem in that the closer the gap between the back support receiving member and the back support receiving member, the worse the work efficiency of attaching the backrest.

The present invention has been made in view of the above problems, and can effectively eliminate the generation of abnormal noise when the backrest is used, and at the same time, efficiently attach the backrest. The purpose is to provide a chair that is ready to do.

[0005]

The present invention employs the following configuration to achieve the above object.

That is, the chair according to the present invention comprises a base having a pair of metal pipe standing members protruding from the rear,
A backrest receiving member made of metal having an opening at a lower end side, and a backrest attached to the base while the standing member is removably inserted into the backrest receiving member. the upper end of the upright member, a large diameter portion diameter slightly larger than the standing member, Ri Na wearing the resin cap having a smaller tip diameters than the large-diameter portion, the back support receiving member
Is a flat channel, and this back support
The upper end of the pair of upright members is a large diameter resin cap
Is tightly inserted in the lateral direction and the longitudinal direction through a part, characterized in Rukoto.

In order to smoothly enter the upright member into the back support receiving member, it is desirable that the resin cap is tapered from the large diameter portion to the tip portion.

In order to prevent rattling of the backrest more reliably, a resin collar is attached to the upright member so as to be in close contact with the inner surface near the lower end of the back support receiving member at a position inserted in the back support receiving member. It is effective to keep it. Alternatively, the inner surface of the back support receiving member may be provided with a resin coating layer that adheres to the outer periphery near the lower end of the inserted standing member.

[0009]

With this structure, the back support receiving member
The upper end of the pair of upright members is the large diameter part of the resin cap
So that it is inserted closely in the left-right direction and front-back direction via
With this configuration, at the insertion position of the upright member, the upper end thereof comes into close contact with the inner surface of the back support receiving member via the resin cap. For this reason, it is possible to reliably avoid the metal contact state between the upright member and the back support receiving member, which has been a cause of the abnormal noise, also assisting the cushioning function of the resin cap. Moreover, since the resin member has a tip portion having a diameter smaller than that of the large diameter portion, even if the guiding position is slightly displaced when the upper end of the standing member is advanced into the lower end opening of the back support receiving member, it is efficient. It is possible to hit it, and it is possible to effectively improve the efficiency of the backrest mounting work that is performed by feeling when mounting. In particular, when the resin cap has a tapered surface, the insertion can be made smoother. Only
With the above configuration, the backrest is not only lateral
It will also be fixed in the front-back direction.

In particular, when a resin collar is attached to the upright member or a resin coating layer is applied to the inner surface of the back support receiving member, the backrest is supported via the upper and lower ends of the upright member. The member can be supported on both sides. For this reason, it is possible to further improve the mounting state of the backrest, and it is possible to more effectively prevent the generation of abnormal noise.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIGS. 1 to 3 show a chair 1 of a bi-elbow type,
This shows a state in which the one-elbow type chair 2 is arranged in the lateral direction.

As shown in FIGS. 3 and 7, the chair 1 comprises a base 3, a seat 4, a backrest 5, and a pair of elbows 6.

The base 2 is, as shown in FIGS. 4 and 6,
A pivot member 9 for seat attachment is pivotally attached to a front portion of a base body 8 supported by the legs 7, and an upright member 11 for back attachment is provided at a rear portion, and a beam 12 for elbow attachment is projected on a side surface. I will set it up.

As shown in FIG. 4, the leg body 7 includes a base plate 14 bolted to the floor surface 13, a square columnar pipe-shaped support 15 fixedly mounted on the base plate 14 by welding or the like, and the support post 15. It is provided with a mounting horizontal plate 16 fixed on the top, and the base body 8 is attached to the mounting horizontal plate 16.

As shown in FIG. 4, the base body 8 includes a bottom wall 18, front and rear walls 19 and 21 which are inclined in a direction of gradually expanding upward, and a rear end of the seat 4 at the center. It is a casing type having left and right side walls 23 having recesses 22 that allow the parts to enter, and has an open upper surface. The rotating member 9 is pivotally attached to the side walls 23 of the base body 8 in front of the recess 22 through the pivot shaft 24, and the standing member 1 extends upward to the rear wall 21.
1 is fixed.

As shown in FIGS. 4 to 6, the rotating member 9 is composed of a rectangular flat plate portion 25 extending in the front-rear direction and a bent portion 26 hanging downward from both side edges of the flat plate portion 25. The sheet metal material is integrally formed by pressing. A semi-arc-shaped pivoting portion for penetrating the pivot shaft 24 is formed integrally with the bent portion 26 at an intermediate position in the front-rear direction. At the front edge of the flat plate portion 25, a cutout 28 for seat mounting is formed, and near the rear end, a screw hole 29 for seat mounting is formed as shown in FIG. A pair of upper surface shock absorbers 31 made of rubber or the like are fixed to both sides of the upper surface of the rear end of the flat plate portion 25, and a single piece of rubber or the like is The lower surface buffer 32 is fixed. On the other hand, an upper stopper 33 having an L-shaped cross section is provided between the portions of the side walls 23 of the base body 8 located behind the cutout portion 22.
Is provided, and the upper surface buffer 31 of the rotating member 9 can be locked by the lower surface of the upper stopper 33. In the center of the bottom wall 18 of the base body 8,
A lower stopper 34 is fixedly provided.
4, the lower surface buffer 32 of the rotating member 9 can be locked. Therefore, the rotating member 9 is used at a position where it is locked by the upper stopper 33 (see FIG. 5).
And a rising position locked by the lower stopper 34 (see FIG. 4). As shown in FIG. 6, a torsion coil spring 35 is wound around the outer periphery of the pivot 24, and the torsion coil spring 35 elastically urges the rotating member 9 in the rising position direction. .

As shown in FIG. 6, the standing member 11 is made of a metal pipe material fixed to the inner surface of the rear wall 21 of the base body 8 by welding or the like. It passes between 33 and extends obliquely upward.

As shown in FIG. 6, the beam 12 is made of a square pipe material that penetrates through the side wall 23 of the base body 8 near the bottom front end. Both ends of the beam 12 are straight on both sides of the base body 8. I'm extending it. The beam 12 is rigidly connected to the base body 8 by welding or the like, and as shown in FIG.
The mounting horizontal plate 16 of the leg body 7 is attached to the base body 8 by a bolt 36 penetrating the beam 12 and a bolt 37 penetrating the bottom wall 18.

As shown in FIG. 4, the seat 4 has a seat receiving member 41.
And a cushion body 42 provided with an exterior material mounted on the seat receiving member 41, and a bottom plate 4 covered on a lower surface of the seat receiving member 41.
3 is provided. The seat receiving member 41 is of a flat housing type opened downward and rearward, and is integrally formed of synthetic resin or the like. Near the lower front end of the seat receiving member 41,
A bolt 44 for engaging with the notch 28 of the rotating member 9 is buried, and a bracket 45 is fixedly provided on the rear edge. Seat 4
The seat member 41 is attached to the pivot member 9 while the notch 28 of the pivot member 9 is engaged with the bolt 44 of the seat 4.
Then, the bolt 46 penetrating the bracket 45 is screwed into the screw hole 29 of the rotating member 9 and tightened. The bottom plate 43 may be attached after tightening the nut 47 screwed to the bolt 44.

As shown in FIGS. 5 and 7, the backrest 5 includes a back plate 51 which is curved so that the front side is recessed, and a lower cushion 5 which is attached to an intermediate position on the front surface of the back plate 51.
2 and an upper cushion 53 at an upper front position of the back plate 51. The back plate 51 is made of wood and has a width dimension slightly smaller than the inner dimension of the left and right elbows 6, and the lower end portion extends downward to hide the back surfaces of the seat 4 and the base body 8. The lower cushion 52 has a lateral width dimension substantially the same as the inner dimension of the left and right elbows 6, and the outer surface is covered with an exterior material. The upper cushion 53 includes a back plate 51.
It has a slightly smaller outline than that, and is positioned on the lower cushion 52 and fastened to the back plate 51. Backboard 5
1, a back support receiving member 54 is fixedly embedded in the lower cushion 52 so as to be embedded in the front of the middle stage position 1. The lower end opening of the back supporting receiving member 54 is exposed on the lower surface of the lower cushion 52. . This backrest 5 has its back support receiving member 54.
The upright member 11 of the base 3 is inserted into the base 3, and is dropped from diagonally above so that the base 3 can be attached.

As shown in FIG. 7, the elbow 6 has an elbow body 61.
And an elbow rest 62 mounted on the elbow main body 61. The elbow body 61 has an inverted trapezoidal shape, and is covered with the same exterior material as the cushion 42 of the seat 4 and the cushions 52 and 53 of the backrest 5.
A concave portion 63 into which the tip of the second 2 can be fitted is formed.
Then, after fitting the tip of the beam 12 to the recess 63, the fastening fitting 6 is attached to the opening at the lower end of the recess 63.
The elbow 6 is fixed to the beam 12 by fitting the center of the elbow 4 and fixing both ends of the fastener 64 to the lower surface of the elbow main body 61 with bolts or the like (not shown). The attachment of the elbow 6 to the beam 12 is the same as the case of attaching an elbow or the like to a long conventional beam, and an appropriate tightening structure may be adopted. In the case of this chair 1, elbows 6 are attached to both ends of the beam 12. Note that reference numeral 71 denotes a decorative cover that covers the leg 7.

On the other hand, the chair 2 has an elbow 6 attached to only one side, and is different from the chair 1 in that a beam 11 is provided.
There are only two. That is, the beam 112 is extended outward from one side surface of the base 3, and the elbow 6 is attached to the extended end. The chair 2 of this embodiment has a beam 1
12 extends outward from the other side surface of the base 3, but the portion extending toward the other side is the adjacent chair 1 or 2.
Is cut at a length that does not interfere with This beam 1
Of course, the portion projecting from the other side surface of 12 may be cut into shorter pieces.

In the chairs 1 and 2 having the above-described structure, the present embodiment is arranged such that the upper end of the upright member 11 has a structure shown in FIGS.
A resin cap 110 as shown in FIG. 8 is attached.
More specifically, the resin cap 110 includes a large-diameter portion 110a slightly larger than the outer diameter of the standing member 11,
The tip portion 110b having a diameter smaller than the large diameter portion and the standing member 1
1 is a hollow body having a base end portion 110c substantially equal to the inner diameter of 1, and a tapered surface 110d that continuously reduces in diameter is formed on the outer periphery from the large diameter portion 110a to the tip end portion 110b, From the large diameter portion 110a to the base end portion 110c, an annular projection 110e is provided on the outer periphery of the large diameter portion 110a at intermittent positions in the longitudinal direction. Then, from the base end portion 110c to the large diameter portion 1
The resin cap 110 is inserted into the upright member 11 while allowing a portion up to the vicinity of 10a to enter the upper end inner circumference of the upright member 11 from above.
Is pressed into. The resin cap 110 has a hollow shape and is provided with appropriate elasticity.
Since it has 0e, the mounting work is easily performed,
The mounted state is also reliable. On the other hand, as shown in FIGS. 7, 9 and 10, the back support receiving member 54 of the present embodiment is a flat channel-like member composed of a back wall 54a, a side wall 54b and a front wall 54c, and is made by pressing a sheet metal material. It is made by processing. Then, the inner dimension L ₁ between the side walls 54d is made to substantially correspond to the distance between the outer edges of the left and right upright members 11,
The inner dimension L ₂ between the back wall 54a and the front wall 54c is made to correspond substantially to the outer diameter dimension of the standing member 11. Further, ribs 54 are formed at the intermittent positions in the longitudinal direction of the back support receiving member 54 by inwardly mounting the orthogonal portions of the back wall 54a and the side wall 54b and the orthogonal portions of the side wall 54b and the front wall 54c, respectively.
d is formed.

In the chairs 1 and 2 having such a structure, since the backrest 5 is simply inserted into the standing member 11,
In a theater or the like, the backrests 5 of the chairs 1 and 2 which are frequently used and easily ache, and the chair 1 which is used infrequently,
It is possible to appropriately rotate the backrest 2 and rotate the backrest 5 without much labor. In spite of such a structure, in this embodiment, since the resin cap 110 described above is attached to the upper end of the standing member 11, when the standing member 11 is inserted into the back support receiving member 54, The upper end is the resin cap 11
It will be in close contact with the inner surface of the back support receiving member 54 via 0. In particular, in the present embodiment, the back support receiving member 54 has a flat channel shape, and the upper ends of the pair of upright members 11 with respect to the back support receiving member 54 have the large diameter portion 110a of the resin cap 110 interposed therebetween. The upright member 11 fixes the backrest 5 not only in the left-right direction but also in the front-back direction. For this reason, it is possible to reliably avoid the metal contact state between the standing member 11 and the back support receiving member 54 by helping the buffer function of the resin cap 110, and the backrest 5
It is possible to effectively eliminate the problem that abnormal noise occurs even when a repeated load is applied to the. Moreover, since the resin cap 110 is formed with the taper surface 110d that gradually decreases in diameter from the large diameter portion 110a to the tip portion 110b, the upper end of the standing member 11 is inserted into the lower end opening of the back support receiving member 54. In this case, even if the guiding position is slightly deviated, it can be hit efficiently and the subsequent approach can be smoothly performed. For this reason, although the standing member 11 surely comes into close contact with the back support receiving member 54 via the resin cap 110 after mounting, it is possible to effectively enhance the efficiency of the backrest mounting work performed by groping during mounting. .

Particularly, in this embodiment, in order to prevent the vibration generated in one chair 1, 2 from being transmitted to the other chair 1, 2 via the beam 12, each chair 1, 2 is prevented.
Is configured to be independently installed on the floor surface 12, and thus the configuration and the configuration according to the present invention cooperate with each other, so that the theater chair is often used in a quiet atmosphere. As a result, the effect of synergistically increasing the usability as such can be achieved.

The specific configuration of each section is not limited to the above-described embodiment. For example, as shown in FIG. 11, the standing member 11 may be provided with a resin collar 111 that is in close contact with the inner surface near the lower end of the back support receiving member at a position inserted into the back support receiving member, or As shown in FIG. 12, on the inner surface of the back support receiving member 54, a resin coating layer 540 that adheres to the outer periphery of the standing member 11 that is inserted.
You may give it. When such a configuration is used together, the backrest can be supported on both sides by the back support receiving member via the upper end and the lower end of the upright member, and the backrest can be mounted in a better condition. It is possible to more effectively prevent the generation of abnormal noise. In addition, the cross-sectional shape of the resin cap can be variously modified without departing from the spirit of the present invention.

[0028]

As described above in detail, according to the present invention, when the resin cap is attached to the upper end of the upright member and the upright member is inserted into the back support receiving member, the upright member is inserted through the resin cap. The inner surface of the support receiving member is closely contacted. Therefore, it is possible to reliably avoid the metal contact state between the upright member and the back support receiving member, and effectively prevent the generation of abnormal noise when a load is repeatedly applied to the backrest. Further, since the resin cap has a tip portion having a diameter smaller than that of the large diameter portion, it is easy to guide the upper end of the upright member into the lower end opening of the back support receiving member so that the backrest is supported. It becomes possible to improve the work efficiency at the time of installation at the same time. In addition to such a basic effect, when the back support receiving member is made into a flat channel shape and the pair of upright members are closely inserted in front, rear, left and right with respect to the inner surface thereof,
The backrest mounting condition can be improved to further suppress the generation of noise due to rattling.If the resin cap has a tapered shape, the backrest mounting work can be facilitated, and When the vicinity of the lower end of the member is also adhered to the inner surface of the back support receiving member through the resin collar and the resin coating layer, the backrest is supported by both sides through the uprighting member, resulting in abnormal noise due to rattling. It is possible to more effectively prevent the occurrence of.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view showing the same embodiment.

FIG. 3 is a side view showing the same embodiment.

FIG. 4 is an enlarged side sectional view showing the same embodiment, with a part omitted.

FIG. 5 is a partially sectional side view showing the same embodiment.

FIG. 6 is an enlarged perspective view showing a base of the embodiment.

FIG. 7 is an exploded perspective view showing the embodiment.

FIG. 8 is an enlarged vertical sectional view showing a resin cap of the same embodiment.

FIG. 9 is a plan view of the back support receiving member of the embodiment.

FIG. 10 is a front view of the same.

FIG. 11 is a perspective view showing a resin collar according to another embodiment of the present invention.

FIG. 12 is a plan view showing a resin coating layer according to still another embodiment of the present invention.

[Explanation of symbols]

 1 ... Chair 2 ... Chair 3 ... Base 5 ... Backrest 11 ... Standing member 54 ... Back support member 110 ... Resin cap 110a ... Large diameter part 110b ... Tip part 111 ... Resin color 540 ... Resin coating layer

Claims (4)

(57) [Claims] Claims: 1. A base having a pair of metal pipe standing members projecting from the rear, and a metal back support receiving member opening at the lower end side, wherein the standing member is provided in the back supporting member. In a chair comprising a backrest attached to the base while being removably inserted, a large diameter part having a diameter slightly larger than the standing member and a diameter larger than the large diameter part at the upper end of the standing member. small tip and greens wearing the resin cap having a a is, spine support receiving member is flat
It is a channel-shaped one, and for this back support receiving member
The upper ends of the pair of upright members are
It is tightly inserted in the lateral direction and the longitudinal direction Te chair characterized by Rukoto. 2. The resin cap extends from the large diameter portion to the tip portion.
The chair according to claim 1, wherein the chair has a tapered shape . 3. The upright member is inserted into the back support receiving member.
Resin that adheres to the inner surface near the lower end of the back support receiving member at a position
The chair according to claim 1, which is equipped with a collar . 4. The standing part inserted in the inner surface of the back support member.
Apply a resin coating layer that adheres to the outer periphery near the bottom edge of the material.
Claim 1 chair, wherein the are.