JPH0847432A - Chair - Google Patents

Abstract

PURPOSE:To provide a chair wherein the degree of freedom in the designing of constituent elements, especially seat, is high, and in addition, dropped small articles can be recovered at a high probability. CONSTITUTION:A chair is equipped with a base 3 wherein a turnable member 9 is pivotally attached to the front part of a base main body 8, and at the same time, a standing member 11 is provided on the rear part, and a beam 12 protrudes on the side surfaces, seat 4 which is detachably fitted on the turnable member 9 and can be turned between a using position and a rising position, back rest 5 which is detachably fitted on the standing member 11, and arm rests 6 which are detachably fitted on the beam 12. The front end of the turnable member 9 is extended more forward than the center of the seat 4. At the same time, the chair is constituted in such a manner that an opening on the upper surface of the base main body 8 may be almost totally closed by the rear end side of the turnable member 9 which is turned to the using position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair installed and used in a theater or the like.

[0002]

2. Description of the Related Art Conventionally, as a chair installed and used in a theater or a hall, for example, one having a plurality of chair bodies installed on a horizontally long beam is known. However, in such a structure, there is a problem in that vibration generated on a specific chair is transmitted to other chairs via a common beam, which makes it easy to cause discomfort. Further, in the case where a plurality of chairs are curved and arranged, it is necessary to perform bending processing of various curvatures on the beam, and there is a difficulty in improving productivity.

As another type of chair, there is also known a chair in which legs that also serve as elbows are installed at a required interval, and a seat and a backrest are arranged between the legs. However, in such a structure, the legs, the seat, the backrest, the elbows, and the like are inseparably assembled, so that there is a problem that it is difficult to change the specifications and replace the components.

In order to solve the above-mentioned problems, recently, a base having a seat mounting pivot member pivotally attached to the front part of the base body and a back mounting upright member at the rear part. A seat that is removably attached to the rotating member and is rotatable between a use position and a rising position; and a backrest that is detachably attached to the upright member. A chair that can be installed on the floor is being considered.

[0005]

However, in the conventional device, the rotating member has a short fork shape that can be inserted into the rear end portion of the seat shell, and the rear end portion of the seat and the bolt. And so on. for that reason,
The load acting on the center of the seat is transmitted to the rotating member via the shell, and is transmitted to the base via the rotating member. Therefore, a shell having high rigidity is indispensable, and there is a problem that the degree of freedom in designing the seat is not sufficient.

Further, in the conventional device, a narrow locking arm is projected rearward from the rear edge of the pivot portion of the rotating member, and the tip of this locking arm is provided at the rear part of the base body. The seat can be locked in the use position by abutting against the stopper, and the locking arm alone cannot close the upper opening of the base body. Therefore, if small items fall between the rear edge of the seat and the rear edge of the backrest while seated, the small items are likely to enter the base body and are difficult to remove. In addition, the seat may malfunction.

[0007] Further, the conventional ones do not have a beam. Therefore, when an elbow is provided, the elbow is bolted to the base body via a mounting arm that is complicatedly bent to avoid interference with the seat and the backrest. Therefore, it is difficult to secure the mounting rigidity of the elbow, and a complicated strength calculation is required if the elbow is to be firmly mounted without causing a large increase in weight.

The present invention aims to solve these problems.

[0009]

The present invention adopts the following constitution in order to achieve the above objects. That is, the chair according to the present invention pivotally mounts a rotating member for seat mounting on the front part of the base body, has a standing member for back mounting on the rear part, and projects a beam for elbow mounting on the side surface. A seat that is detachably attached to the rotating member and is rotatable between a use position and a rising position; and a backrest that is detachably attached to the standing member.
An elbow removably attached to the beam, and a rear end of the rotating member that is rotated to a use position while extending the front end of the rotating member forward of the center of the seat. It is characterized in that it is configured such that the upper surface opening of the base body can be closed substantially entirely on the side.

In order to increase the strength of the rotating member while simplifying the manufacturing, the rotating member includes a rectangular flat plate portion extending in the front-rear direction and a bent portion that hangs downward from both side edges of the flat plate portion. It is preferable to provide a pivotally connecting portion for penetrating the pivot shaft at a required position of the bent portion.

In order to easily and firmly attach the elbows to both sides, it is preferable that the elbow-mounting beam is made of a straight pipe material projecting from the side wall of the base body to both sides. desirable.

In order to easily and firmly attach the elbow to one side, the beam for attaching the elbow should be made of a straight pipe member protruding from the side wall of the base body to one side. Is good.

[0013]

With such a structure, since each chair is independently installed on the floor, the vibration generated in one chair is not transmitted to the other chair. Moreover, since the seat, the backrest, and the elbow are detachably attached to the base, the seat, the backrest, and the elbow can be freely designed by sharing only the attachment portion with the base. That is, each of these components can be designed independently without any consideration of the coupling relationship among the seat, the backrest, and the elbow, and various specification changes can be easily dealt with. Becomes

In addition, since the rotating member for supporting the seat can support not only the rear end portion of the seat but also the central portion of the seat on which a load is substantially applied during use from the lower side. ,
The seat itself and the shell of the seat are not required to have large rigidity, and this also greatly improves the degree of freedom in designing the seat. Also, since the rear end side of the rotating member can close the upper surface opening of the base body substantially entirely,
It is possible to effectively reduce the possibility that small articles fall into the base body. Further, since the beam is projected from the base, the elbow can be attached without using a mounting arm having a complicated shape.

[0015]

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

FIGS. 1 to 3 show a chair 1 of a double elbow type,
It shows a state in which the one-elbow type chair 2 and the chair 2 are laterally arranged.

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 3 is, as shown in FIGS. 4 and 6,
A rotating member 9 for seat attachment is pivotally attached to the front portion of a base body 8 supported by the legs 7, a standing member 11 for back attachment is provided at the rear portion, and a beam 12 for elbow attachment is projected on the side surface. Set up.

As shown in FIG. 4, the leg body 7 has a base plate 14 bolted to the floor surface 13, a prismatic pipe-shaped support 15 fixedly mounted on the base plate 14 by welding or the like, and the support 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 main body 8 includes a bottom wall 18, front and rear walls 19 and 21 that 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. Then, a semi-circular arc-shaped pivoting portion for penetrating the pivot shaft 24 is integrally formed at an intermediate position of the bent portion 26 in the front-rear direction. A notch 28 for seat attachment is formed at the front edge of the flat plate portion 25, and a screw hole 29 for seat attachment is formed in the vicinity of the rear end as shown in FIG. A pair of upper surface cushioning members 31 made of rubber or the like are fixed to both sides of the rear end upper surface of the flat plate portion 25, and a single central member made of rubber or the like is formed at the central portion of the rear end lower surface. 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 both side walls 23 of the base body 8 located behind the notch 22.
The upper stopper 33 has a lower surface to which the upper cushion 31 of the rotating member 9 can be locked. In addition, in the central portion of the bottom wall 18 of the base body 8,
The lower stopper 34 is fixed, and the lower stopper 3
The lower surface cushioning member 32 of the rotating member 9 can be locked by means of 4. Therefore, the rotating member 9 is in the use position locked by the upper stopper 33 (see FIG. 5).
And a rising position (see FIG. 4) locked by the lower stopper 34. As shown in FIG. 6, a torsion coil spring 35 is wound around the outer periphery of the pivot shaft 24, and the torsion coil spring 35 elastically biases 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 which is penetrated through the side wall 23 of the base body 8 near the bottom front end, and both ends are straightened to 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.
A cushion body 42 provided with an exterior material mounted on the seat receiving member 41, and a bottom plate 4 attached to the lower surface of the seat receiving member 41.
3 and 3. The seat receiving member 41 is a flat casing that is open downward and rearward, and is integrally formed of synthetic resin or the like. Near the front end of the lower surface of the seat receiving member 41,
A bolt 44 that engages with the cutout portion 28 of the rotating member 9 is embedded, and a bracket 45 is fixed to the rear edge. Zodiac 4
For mounting the rotary member 9 on the rotary member 9, the rotary member 9 is attached to the seat receiving member 41 while engaging the notch 28 with the bolt 44 of the seat 4.
Is attached to the lower surface of the rotating member 9, and 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 FIG. 5 and FIG. 7, the backrest 5 has a back plate 51 which is curved so that the front side is recessed, and a lower cushion 5 which is provided at an intermediate position on the front side of the back plate 51.
2 and an upper cushion 53 at the 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 is the back plate 51.
It has a slightly smaller contour than that of the lower cushion 52 and is fixed to the back plate 51. Backboard 5
1. A flat channel member 5 made of metal on the front of the middle position of 1.
4 is embedded and fixed in the lower cushion 52, and the lower end opening of the channel member 54 is exposed on the lower surface of the lower cushion 52. This backrest 5 is
The standing member 11 of the base 3 is inserted into the channel member 54 and dropped from an obliquely upper position so that the standing member 11 can be attached to the base 3.

As shown in FIG. 7, the elbow 6 has an elbow body 61.
And an elbow rest 62 mounted on the elbow 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, and the beam 1 is attached to the inner surface of the lower end portion.
A recessed portion 63 into which the tip end of 2 can be fitted is formed.
Then, after fitting the tip of the beam 12 into the recessed portion 63, the fastening metal fitting 6 is inserted into the lower end opening of the recessed portion 63.
The elbow 6 is fixed to the beam 12 by fitting the central portion of 4 and fixing both end portions of the fastening metal fitting 64 to the lower surface of the elbow body 61 with bolts or the like not shown. The attachment of the elbow 6 to the beam 12 is the same as when attaching the 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. Reference numeral 71 is a makeup cover that covers the leg body 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 the beam 11
Only 2. That is, the beam 112 extends outward from one side surface of the base 3, and the elbow 6 is attached to the extending end of the beam 112. The chair 2 of this embodiment has a beam 1
12 also extends outward from the other side surface of the base 3, but the portion extending to the other side is the adjacent chair 1 or 2
It 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 case of such a structure, the two elbow type chairs 1 are arranged at the ends, and the required number of one elbow type chairs 2 are sequentially arranged next to each other to form a row. A group of chairs can be configured. In this case, since the chairs 1 and 2 are independently installed on the floor surface 12, the vibration generated in one of the chairs 1 and 2 is not transmitted to the other chairs 1 and 2. In particular, in this embodiment, the width dimension of the cushion 52 of the backrest 5 is set to be slightly larger than the width dimension of the rigid back plate 51, so that the chairs 1 and 2 are apparently closely contacted and arranged. Even if it does, since the adjacent chairs 1 and 2 are only in close contact with each other due to the contact between the cushion 52 and the elbow 6, even if the chairs 1 and 2 are not arranged with a gap, uncomfortable vibration is generated. It can be effectively prevented from being transmitted to the adjacent chair.

Moreover, the seat 4, the backrest 5, and the elbow 6 are
Since each of them is detachably attached to the base 3, it can be freely designed if only the attachment portion to the base 3 is made common. If this is done, any one of the seat 4, the backrest 5, and the elbow 6
Even if it becomes dirty or damaged, only the necessary parts can be easily replaced or removed for cleaning or repair. Particularly, in the embodiment, the backrest 5 is
Since the base 3 is inserted from above and held only by its own weight, the backrest 5 can be easily attached and detached. Therefore, for example, in a theater or the like, the backrests 5 of the chairs 1 and 2 which are frequently used and are easily painful
Also, it is possible to appropriately replace the backrests 5 of the chairs 1 and 2 that are used infrequently and rotate the chairs without requiring much labor.

In addition, the rotating member 9 for supporting the seat 4 can support not only the rear end portion of the seat 4 but also the center S portion of the seat on which a load is substantially applied during use from below. Therefore, the seat 4 itself, the shell of the seat 4, and the like are not required to have large rigidity, and from this point also, the degree of freedom in designing the seat 4 is significantly improved. Further, as shown in FIGS. 5 and 7, since the opening of the upper surface of the base body 8 can be almost entirely closed at the rear end side of the rotating member 9, small articles are stored in the base body 8. The possibility of falling can be effectively reduced. That is, the small objects that have fallen from the rear end of the seat 4 have fallen on the rotating member 9 and remain there, or bounce on the rotating member 9 and the side floor surface 1 of the base 3
Drop on 3. Therefore, it can be collected relatively easily.

Since the beams 12 and 112 are projected from the base 3, the elbow 6 can be mounted without using a mounting arm having a complicated shape. In particular, this beam 12, 112 is applied to the base body 8 as in the previous embodiment.
If it is made of a straight rectangular pipe material projecting from the side wall 23 on both sides or one side, the elbow 6 can be securely and robustly attached without increasing the weight.

Incidentally, the structure of the rotating member is not limited to that shown in the illustrated embodiment, but according to the above structure, the sheet metal material having high strength can be obtained by press working or the like. The rotating member can be easily manufactured.

The forms of the seat, backrest and elbow are not limited to those shown in the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0034]

Since the present invention is as described above, the vibration generated in one chair is not transmitted to the other chair, and the seat, the backrest, and the elbow are mutually connected. Since they are not connected to each other, it becomes easy to replace the respective constituent elements and the like, and the degree of freedom in designing the respective constituent elements can be improved.

Moreover, since the rotating member can support the load acting on the seat from the lower side, it is not necessary to impart high rigidity to the seat itself. It can be improved, and high durability can be imparted. Moreover, since the rear end side of the rotating member can close the upper surface opening of the base body substantially entirely, it is possible to effectively reduce the possibility of small articles falling into the base body. . Therefore, there is a high possibility that the small articles can be collected even if they are dropped during the sitting, and the possibility that the small articles are clogged in the base and cause a malfunction of the seat is reduced.

Further, according to the second aspect of the present invention, by providing the sheet metal material with press working or the like, a rotating member having high strength can be easily manufactured, and a chair having high durability is provided. Is possible.

Since the beam is projected from the base, the elbow can be mounted without using a mounting arm having a complicated shape. In particular, this beam
Alternatively, as in the invention described in 4, if the pipe body is formed of a straight pipe material projecting from the side wall of the base body to both sides or one side, the elbow can be securely and sturdy without increasing the weight. It becomes possible to install.

[Brief description of 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 a partially omitted enlarged side sectional view showing the embodiment.

FIG. 5 is a side cross-sectional view showing the same embodiment with a part omitted.

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

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

[Explanation of symbols]

 1 ... Chair 2 ... Chair 3 ... Base 4 ... Seat 5 ... Backrest 6 ... Elbow 9 ... Base body 11 ... Standing member 12 ... Beam 25 ... Flat plate part 26 ... Bent part 27 ... Pivot part

Claims (4)

[Claims] 1. A base having a seat mounting pivot member pivotally attached to the front part of the base body, a back mounting upstanding member at the rear part, and elbow mounting beams projecting from the side surfaces. A seat that is detachably attached to the rotating member and is rotatable between a use position and a rising position; a backrest that is detachably attached to the upright member; and an elbow that is detachably attached to the beam. And the front end of the rotating member extends forward from the center of the seat, and the upper end opening of the base body is substantially formed on the rear end side of the rotating member rotated to the use position. A chair characterized by being configured so that it can be completely closed. 2. The rotating member comprises a rectangular flat plate portion extending in the front-rear direction and a bent portion hanging downward from both side edges of the flat plate portion, and a pivot shaft is provided at a required position of the bent portion. The chair according to claim 1, further comprising a pivotal portion for allowing the armature to pass therethrough. 3. The chair according to claim 1, wherein the elbow mounting beam is formed of a straight pipe material projecting from the side wall of the base body to both sides. 4. The chair according to claim 1, wherein the beam for mounting the elbow is made of a straight pipe material protruding from the side wall of the base body to one side.