JP2009225844A - Theater seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a theater seat which has a backrest having a cushioning property which can be comfortably employed for a long time and can raise the arrangement efficiency in the back and forth directions of the seat. <P>SOLUTION: In the theater seat, right and left side legs 1, of which the lower ends are adhered to a floor, are formed, the backrest 2 is formed by covering at least the front of a backrest frame 6 with a cover member 7 having elasticity, an attachment part 11 is extended towards the front from the right and left lower parts of this backrest frame 6. These right and left attachment parts 11 are fixed to the right and left side legs 1, respectively, and a seat body 3, which can rotate between a storage location which stands up and an almost level use position, is attached to a space between these right and left side legs. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a theater chair, and more particularly to a theater chair provided with a seat and a backrest that can be rotated between a standing storage position and a substantially horizontal use position between left and right side legs.

As for theater chairs, for example, those whose backrest is made of a plate material, and whose wooden core material is covered with a cushion material and a skin material are known (Patent Documents 1 and 2).
When the backrest of the former is made of plate material, the thickness in the front-rear direction can be reduced, so that the arrangement efficiency of the theater chair in the front-rear direction can be improved, but there is no cushioning as a backrest and it is used for a long time This increases the degree of fatigue of the seated person and is not preferable for practical use.

On the other hand, when the surface of the latter woody core material is covered with cushioning material and skin material, it has cushioning properties, so that even if it is used for a long time, fatigue of the seated person is prevented, but in the front-rear direction of the backrest There is a problem that the thickness becomes large, and the arrangement efficiency of the theater chair in the front-rear direction is deteriorated.
Japanese Utility Model Publication No. 14-8159 Japanese Utility Model Publication No. 55-21637

  In view of the above situation, the present invention has a cushioning property as a backrest, prevents fatigue of a seated person even when used for a long time, can be used comfortably, and has a thickness in the front-rear direction of the backrest. It is an object of the present invention to provide a theater chair that can be reduced in size and improve the arrangement efficiency of the chair in the front-rear direction.

According to the present invention, the above-described problems are solved by the invention having the following configuration, as shown in each of the claims.
(1) Provide left and right side legs with their lower ends fixed to the floor, and at least the front surface of the backrest frame is covered with a stretchable cover member to form a backrest. The left and right mounting parts are fixed to the left and right side legs, respectively, and between the left and right side legs, between the stowed storage position and the almost horizontal use position. The theater chair is characterized by having a seat that can be rotated.

(2) In the above item (1), the cover member is formed into a bag shape having an opening in the lower portion, the backrest frame is covered with the cover member, and the opening is closed by the closing means.

  (3) In the above item (2), a plate member that is elastically deformed by a load from the seated person or the rear side is provided between the left and right frame members of the backrest frame and inside the bag-like cover member. It has a function as a lumbar support or a protective plate against impact from the rear.

  (4) In any of the above items (1) to (3), a pivot is constructed between the mounting portions extending forward from the left and right lower portions of the backrest frame, and the seat is rotated on the pivot. Install as possible.

  (5) In any one of the above items (1) to (4), the left and right attachment portions extending forward from the left and right lower portions of the backrest frame are provided with locking portions that protrude outward in the left-right direction. The left and right side legs are provided with locked portions that protrude inward in the left-right direction, the locking portions are locked to the locked portions, and through the through holes provided in the mounting portion. Secure the mounting part to the side legs with screws.

  (6) In any of the above items (1) to (5), three or more side legs are arranged in a row in the left-right direction at a desired interval and fixed to the floor, and between adjacent side legs, Provide a backrest and seat.

According to the present invention, the following effects can be obtained.
According to the first aspect of the present invention, it has a cushioning property as a backrest, and even when used for a long time, it prevents fatigue of the seated person and can be used comfortably. It is possible to obtain a theater chair that can be reduced in size and improve the arrangement efficiency of the chair in the front-rear direction.

  According to invention of Claim 2, attachment and removal of the cover member to a back frame can be performed easily.

  According to the invention of claim 3, it is possible to easily form a lumbar support or a device having a function as a protective plate against an impact from the rear, and the bag-like cover member prevents excessive deformation of the plate material, It is designed to be elastically deformed and prevent damage to the plate material.

  According to invention of Claim 4, a chair can be assembled easily and construction time can be shortened.

  According to the fifth aspect of the present invention, the locking portion is locked to the locked portion, so that the attachment portion extended forward from the left and right lower portions of the back frame is fixed to the side leg. Positioning at the time is easy, and position stability after mounting is good.

  According to invention of Claim 6, a side leg can be shared in an adjacent seat and a theater chair can be efficiently arrange | positioned in the left-right direction.

Hereinafter, the present invention will be described in detail based on examples.
FIG. 1 is a perspective view of a theater chair embodying the present invention, FIG. 2 is a partially exploded perspective view of the chair shown in FIG. 1, FIG. 3 is an enlarged exploded perspective view of main parts, and FIG. FIG. 5 is a central longitudinal cross-sectional view when the chair seat is in a standing state, and FIG. 6 is a central longitudinal cross-sectional view when the chair seat is in a sitting state, FIG. Fig. 8 is a central longitudinal sectional view of the chair body of the chair, Fig. 8 is a front view of the main part showing a state where the cover member is covered with the backrest frame, and Fig. 9 is an upper perspective view of the seat lower surface cover.

As shown in FIG. 1, in the theater chair of the present invention, a large number of side legs 1 are arranged in a row in the horizontal direction at a desired interval and fixed to the floor, and between the adjacent side legs 1 and 1, respectively. A backrest 2 and a seat body 3 are attached.
The side legs 1 have a substantially inverted T shape in a side view, and the front and rear ends of a base portion 1a extending in the front-rear direction are fixed to the floor by bolts 4.
The upper end of the side leg 1 is an elbow rest 5.

  The backrest 2 is formed by covering a frame-like backrest frame 6 with a cover member 7 having elasticity (see FIG. 2). As the cover member 7 having stretchability, the most preferably used is a bag-like net-like material having an opening 7a in the lower part. The net is preferably formed using a stretchable material, but by using the cover member 7 made of a mesh, the stretch can easily be stretched even when a non-stretchable material is used. The cover member 7 having is obtained. By using the cover member 7 having stretchability, when a load is applied from the front by the seated person to the backrest, the cover member 7 is elastically deformed by stretching and gives the seated person excellent sitting comfort.

  The backrest 2 is formed between the left and right frame members 6a, 6a of the backrest frame 6 and provided with a plate material 8 that can be elastically deformed by a load from the seated person or the rear in the bag-like cover member 7. The plate member 8 preferably has a function as a lumbar support or a protective plate against an impact from the rear.

  The plate member 8 is formed of polypropylene resin or the like, and is provided with a forward-shaped shape in a side view and in a rearward direction with respect to the central portion in the left-right direction in order to give a good pressing force to the seated person's waist. In order to bend the seat occupant from the left and right with respect to the load, it is formed in a gentle arc shape protruding backward in plan view.

  As shown in FIG. 8, a mounting bracket 9 is fixed to the lower part of the backrest frame 6, and in this mounting bracket 9, a mounting piece 9a is extended inward in the left-right direction. The left and right lower corners of the shaped plate 8 are fixed with screws 10. In this way, by attaching a part of the plate member 8, particularly the lower part, to the backrest frame 6, the plate member 8 is easily elastically deformed by a load from the seated person or from the rear, and serves as a lumbar support or a protective plate against an impact from the rear. The function of is given.

  In order to fully exert the lumbar support function, the vertical length of the plate member 8 is from the lower end portion in the space between the left and right frame members 6a, 6a to at least the forward bent portion of the frame member 6a that supports the waist. A size that reaches the corresponding position is required. In this case, the width in the left-right direction of the plate member 8 is not necessarily required to be substantially the same as the distance between the left and right frame members 6a, 6a in the backrest frame 6, and may be somewhat narrow.

  In order to sufficiently exert the function as a protective plate against the impact from the rear, the width of the plate 8 in the left-right direction is made substantially the same as the interval between the left and right frame members 6a, 6a in the backrest frame 6. It is desirable that the plate material is made of a material having impact resistance against kicking of the foot and the like, and absorbs the impact to make the impact on the seated person as small as possible.

  In this case, the length of the plate member 8 in the vertical direction is directed upward from the lower end portion in the space between the left and right frame members 6a, 6a rather than the position corresponding to the forward bent portion of the frame member 6a that supports the waist. The size is desired to reach a high position.

  In order to improve impact resistance and reduce the impact on the seated person as much as possible, a plate material made of a somewhat rigid elastic body is selected, and for example, a reinforcing rib is provided on the plate material or the back of the plate material is Fix the frame to two places on the left and right sides, and fix the upper part using elastic fixing means, for example, using elastic strips, or using bag-like upholstery. Is desirable.

  After the plate member 8 is attached to the backrest frame 6, a bag-like cover member 7 having an opening 7a in the lower part is covered with the backrest frame 6 from above, and the opening 7a is closed by a string (not shown). So that the cover member 7 is not displaced from the backrest frame 6 by shifting upward.

  By using the bag-shaped cover member 7, it is possible to prevent the plate material 8 from being excessively deformed, to be appropriately elastically deformed, and to prevent the plate material 8 from being damaged.

  In the illustrated embodiment, the bag-like cover member 7 is used. However, in some cases, only the front surface of the backrest frame 6 is covered with a stretchable cover member, and a plate member 8 is disposed behind the cover member. May be.

  As shown in FIG. 2, attachment portions 11 extend forward from the left and right lower portions of the backrest frame 6, and the left and right attachment portions 11, 11 are respectively connected to the left and right side legs with screws 12. 1 and 1, and a seat 3 is attached between the left and right side legs.

  The lower opening 7a of the cover member 7 has a cutout portion 7b cut out upward on the left and right sides, and the attachment for attaching the backrest frame 6 to the side leg 1 through the cutout portion 7b. The part 11 extends forward.

  The left and right attachment parts 11, 11 are provided with upper and lower engaging parts 13 protruding outward in the left-right direction, and the left and right side legs 1, 1 are engaged parts protruding inward in the left-right direction. 14 is provided on the upper and lower sides, the locked portion 13 is locked to the locked portion 14, and the mounting portion 11 is attached to the side leg 1 with a screw 12 through a through hole 15 provided in the mounting portion 11. It is fastened.

  A pivot 16 is installed between the left and right mounting portions 11, 11, and the seat 3 is placed between the standing storage position shown in FIG. 5 and the substantially horizontal use position shown in FIG. 6. It is pivotally attached.

  As shown in FIGS. 2 and 3, the seat body 3 is fixed to the seat body 17, a lower surface of the seat body 17, a bearing member 18 for pivotally supporting the seat body 17 on the pivot 16, and the seat body 17. And a seat lower surface cover 19 that covers the lower surface and the bearing member 18.

  The seat main body 17 has a substantially rectangular shape in a plan view in the seated state, and the rear is slightly narrow.

  Similarly, the bearing member 18 has two parallel front-and-rear directions that are vertically arranged at the center in the left-right direction on the lower surface of the upper plate 18a and the upper plate 18a having a substantially T-shape facing backward in a plan view in the seated state. The hanging pieces 18b and 18b and the rear portions of the upper plate 18a are formed by pivotal bearing portions 18c and 18c having U-shaped side views provided on the left and right sides outside the hanging pieces 18b and 18b. The left and right pivot bearing portions 18c, 18c are formed so as to be spaced apart from each other by substantially the same interval as the two parallel hanging pieces 18b, 18b.

  The drooping piece 18b is notched in a U-shape at a portion where the pivot bearing portion 18c is located, and the pivot piece 18b receives the pivot 16 by the left and right pivot bearing portions 18c and 18c and the notch portion 18d of the drooping pieces 18b and 18b. A receiving groove in the left-right direction is formed.

  As shown in FIGS. 2 and 9, the seat lower surface cover 19 has a substantially square shape in a plan view in the seated state, and the bottom plate 19a has an arcuate shape protruding downward in the front view, and the rear portion of the bottom plate 19a. A groove portion 19b having a U-shape in a side view for avoiding interference with the pivot bearing portion 18c in the bearing member 18 is formed.

The seat body 3 is assembled to the pivot 16 as follows.
As shown in FIG. 3, the bearing 20 (see FIG. 2) is fitted to the pivot 16, and the pivot bearing portion 18 c of the bearing member 18 is fitted to the pivot 16 from below. At this time, the bearing member 18 is positioned by the positioning member 21 (see FIG. 2) which is welded to the pivot 16 in advance. Next, the seat body 17 is applied to the pivot 16 from above, and the bearing member 18 is fixed to the seat body 17 by screws 22 from below.

  Next, as shown in FIG. 2 to FIG. 4 and FIG. 7, the two wires 23, 23 are respectively connected between the two hanging pieces 18 b, 18 b of the bearing member 18 with one end 23 a to the pivot 16 by a screw 24. It fixes and arrange | positions along the circumferential direction of the pivot 16, and the other end 23b is located ahead.

  Next, a locking pin 25 is installed between the front portions of the left and right hanging pieces 18b, 18b, and one end 26a of each of the two winding springs 26, 26 is fixed to the locking pin 25 as a fixing portion. The free end of the other end 26 b is connected to the other end 23 b of the wire 23.

  Next, the stopper receiver 27 is fixed to the installation piece 18e provided between the rear portions of the left and right hanging pieces 18b, 18b with screws 28. The stopper receiver 27 contacts the stopper 29 welded to the pivot 16 when the seat 3 is rotated around the pivot 16 from the seated state shown in FIG. 6 to the standing state shown in FIG. The rotation of the seat body 3 is restricted.

  Next, the seat lower surface cover 19 is attached to the seat body 17 with screws 30 from below to cover the lower surface of the seat body 17 and the bearing member 18.

  As described above, as shown in FIG. 7, the urging means is formed by the winding spring 26 having one end 26a fixed to the lower portion of the seat body 3 and the other end 26b being a free end. In the seated state, and the free end 26b is disposed along the circumferential direction of the pivot 16 with the one end 23a fixed to the pivot 16 on which the seat body 3 is pivotally supported. By connecting to the other end 23b of the wire 23, a chair that constantly urges the seat body 3 in the direction of standing is obtained.

  Since the seat body 3 is always urged in the standing direction as described above, when it is not in use, the seat body 3 is in a standing state as shown in FIG. Thus, the seat body 3 is rotated around the pivot 16 against the urging force of the winding spring 26 to be in a seated state as shown in FIG. After use, when the seated person moves away from the seat body 3, the seat spring 3 automatically returns to the standing state by the urging force of the winding spring 26.

  If necessary, a mechanism for maintaining the seated state may be incorporated so that the mechanism automatically returns to the standing state after the mechanism is released.

  Further, the urging force of the winding spring 26 is reduced so that it does not automatically return to the standing state, but the force required when the person returns to the standing state may be reduced.

  As shown in FIGS. 1 and 9, the seat lower surface cover 19 has a rear lower surface formed in an arcuate shape that protrudes downward in a rear view, and the lower surface is formed in an arcuate rear portion in FIG. In the standing state of the seat body 3 shown, a groove portion 31 that opens downward and rearward is provided, and a first handle portion 32 is formed at the rear end of the groove portion 31.

  As shown in FIGS. 1 and 7, the lower surface front portion of the seat lower surface cover 19 is provided with a protruding portion 33 that protrudes downward, and is formed so as to gradually rise backward from a portion 33 a that protrudes most downward. Has been. A concave portion as the second handle portion 34 is provided on the lower surface that gradually rises so as to open forward and downward in the standing state of the seat body 3 shown in FIG.

  The first handle portion 32 is used as a handle portion when the seat body 3 carries a chair in a standing state, and the second handle portion 34 is used when the seat body 3 in the standing state is brought into a sitting state. Used as a handle.

  In this embodiment, the first handle 32 and the second handle 34 are provided on the seat lower surface cover 19, which is a member constituting the seat body 3, but the seat lower surface cover 19 is not used. For example, a double-handed portion may be provided on the seat body 17.

  In general, the rear portion of the seat body 3 is provided with a first handle portion that opens at least downward in the standing state, and the lower surface front portion of the seat body 3 protrudes downward. What is necessary is just to provide the 2nd handle part opened to the front lower direction in the standing state of a seat.

It is a perspective view of the theater chair which implemented this invention. It is a partial exploded perspective view of the chair shown in FIG. Similarly, it is a principal part expansion exploded perspective view. Similarly, it is a front view of the state which removed the seat lower surface cover. It is a center longitudinal cross-sectional view when the seat body of a chair is made into the standing state. It is a center longitudinal cross-sectional view when the seat body of a chair is made into the seating state. It is a center longitudinal cross-sectional view of the seat body of a chair. It is a principal part front view which shows the state which coat | covers a cover member on a backrest frame. It is an upper perspective view of a seat lower surface cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side leg 2 Backrest 3 Seat 4 Bolt 5 Elbow rest 6 Backrest frame 6a Left and right frame material 7 Cover member 7a Opening 7b Notch part 8 Plate material 9 Mounting bracket 9a Mounting piece 10 Screw 11 Mounting part 12 Screw 13 Locking part 14 Locked portion 15 Through hole 16 Pivot shaft 17 Seat body 18 Bearing member 18a Top plate 18b Hanging piece 18c Pivot bearing portion 18d Notch portion 18e Installation piece 19 Seat lower surface cover 19a Bottom plate 19b Groove portion 20 Bearing 21 Positioning member 22 Screw 23 Wire 23a One end 23b The other end 24 Screw 25 Locking pin 26 Winding spring 26a One end 26b The other end 27 Stopper receiver 28 Screw 29 Stopper 30 Screw 31 Groove 32 First handle portion 33 Projection portion 33a The most protruding portion 34 The second handle Part

Claims (6)

  Left and right side legs with bottom ends fixed to the floor are provided, and at least the front surface of the backrest frame is covered with a stretchable cover member to form a backrest. The left and right mounting parts are fixed to the left and right side legs, respectively, and can be rotated between the left and right side legs between a stowed storage position and a substantially horizontal use position. A theater chair with a seat attached to it.   2. The theater chair according to claim 1, wherein the cover member is formed in a bag shape having an opening at a lower portion, the backrest frame is covered by the cover member, and the opening is closed by closing means.   Between the left and right frame members of the backrest frame, a plate material that can be elastically deformed by a load from the seated person or the back is provided inside the bag-shaped cover member, and this plate material is subjected to a lumbar support or an impact from the back. The theater chair according to claim 2, which has a function as a protective plate.   The theater chair according to any one of claims 1 to 3, wherein a pivot shaft is installed between mounting portions extending forward from left and right lower portions of the backrest frame, and a seat body is rotatably mounted on the pivot shaft.   The left and right attachments that extend forward from the left and right lower parts of the backrest frame are provided with locking portions that protrude outward in the left-right direction, and the left and right side legs are covered with protrusions that protrude inward in the left-right direction. The locking portion is provided, the locking portion is locked to the locked portion, and the mounting portion is fixed to the side leg with a screw through a through hole provided in the mounting portion. A theater chair according to any of the above.   Three or more side legs are arranged in rows in the left-right direction at a desired interval and fixed to the floor, and a backrest and a seat are provided between adjacent side legs, respectively. The listed theater chair.

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