JP5432218B2 - Portable chair - Google Patents

Description

  The present invention relates to a portable chair that is movably disposed in a space that does not normally have a chair, such as a theater, a hall, or a gymnasium, and more particularly to a portable chair that is easy to pass in the lateral direction.

  In theaters and halls, portable chairs may be placed in empty spaces such as front and rear of existing chairs, sideways, etc. so that they can be moved by hand or cart, etc. Also, in gymnasiums and the like, there are cases where a portable chair is placed in an exercise space that does not normally have a chair so that it can be moved by a hand or a trolley, etc. and seated.

Conventionally, for example, a stacking chair described in Patent Document 1 is known as a portable chair used in such a case. This stacking chair is formed with a movable leg composed of a pipe frame in a narrowed shape when viewed from the front and side, and a narrowed shape when viewed from above, and is supported by the legs so that the seat can be flipped up. At the same time, the chair is supported by the legs so that the back can be moved forward, thereby enabling stacking of a plurality of chairs in the front-rear direction and the vertical direction.
JP 2002-253379 A

  However, the inventors of the present invention have made research on such a conventional portable chair. In this conventional portable chair, although the seat is supported by the legs so that it can be flipped up, it is usually lowered to a substantially horizontal use position. Therefore, when a large number of chairs are arranged in the horizontal direction, the seats obstruct the passage in the horizontal direction, and it is not possible to secure a passage of sufficient width unless the seats are lifted up one by one. It turns out that there is an inconvenience of hanging. And this was serious because it could cause confusion for those who evacuate, especially in the event of an emergency where evacuation is contested.

An object of the present invention is to advantageously solve the above-described problems. A portable chair according to the present invention includes a leg that is movably disposed at a place where the chair is used , and a back that is fixedly supported by the leg. And a seat supported by the leg so as to be swingable between a substantially horizontal use position and a front-up position, and a seat-up means for constantly urging the seat toward the position. , Which comprises.

  In such a portable chair, the chair is carried into the place of use by manpower, a carriage, etc., and the leg is movably disposed at the place of use, and the seat supported by the leg in a swingable manner is seated by the seated person. When lowered to a substantially horizontal use position against the urging force of the flip-up means, the seat at the use position and the back with the legs fixedly supported support the seated person. When the seated person stands up and leaves the seat, the seat automatically swings to the forwardly raised position by the urging force of the seat-up means, and is maintained in the raised position unless the seated person lowers. . And if the said chair becomes unnecessary, it will be carried out from the place of use by manpower, a cart, etc.

  Therefore, according to the portable chair of the present invention, when there is no seated person or when standing up, the seat is always in the front-up position, so even when many chairs are arranged in the lateral direction, Since it does not hinder the passage in the lateral direction, it is possible to secure a sufficiently wide passage without having to flip up the seats one by one, so it is possible to easily carry out the passage in the lateral direction without taking time and effort. it can. And this can enable quick evacuation especially in case of emergency where evacuation competes for a moment, and it is possible to avoid the occurrence of confusion for those who evacuate.

Furthermore, in the portable chair according to the present invention, the leg has a frame structure in which a front portion is inclined rearward .

According to this configuration, since the front part of the leg frame structure is inclined rearward and the upper part is retracted, the upper part of the front part of the leg frame structure is lateral even when many chairs are arranged in the horizontal direction. Since traffic in the direction is not hindered, traffic in the horizontal direction can be performed more easily.

Specifically, in the portable chair of the present invention, the frame structure of the leg, on left and right opposite sides of the back and the seat, the anteversion was and the rear frame, tilted backward the front and the front of the A front frame having a substantially horizontal lower portion with a front end connected to the lower end , and the front frame is disposed on the inner side in the left-right direction of the rear frame and coupled to the rear frame .

According to this configuration, in a state where the seats are all jumped to the flip-up position, a plurality of the front frames of the chair legs are inserted from the rear side of the rear frame of the chair legs. Since the chairs can be stacked in the front-rear direction to be compact, the efficiency of storing and transporting the chairs can be increased.

In the portable chair of the present invention, the rear frames on both sides of the back in the left-right direction may be coupled to each other via the back.

  In this case, since it is not necessary to separately provide a member for connecting the rear frames on both sides of the back in the left-right direction, the leg is reduced in weight, so that the chair can be easily transported by manpower, a carriage, or the like. .

Then, in the portable chair of the present invention, the seat flip-up means has a spiral spring disposed in the leg pivot axis and coaxially of the seat.

According to this configuration, since the spiral spring of the seat jumping means is disposed on the leg on the same axis as the swing axis of the seat, the seat jumping means can be used even when the seat jumps to the jumping position. Since it does not protrude in the front-rear direction or inward, lateral passage and front-rear stacking can be performed more easily.

(A)-(e) is the front view, side view, back view, top view, and bottom view which respectively show one Example of the portable chair of this invention. (A)-(c) is a perspective view which shows the portable chair of the said Example, the side view of the state which the seat bounced up, and the side view of the front-back direction stacking state. It is a disassembled perspective view which shows the structure of the portable chair of the said Example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1A to 1E are a front view, a side view, a rear view, a plan view, a bottom view, and FIGS. 2A to 2E, respectively, showing an embodiment of the portable chair according to the present invention. c) is a perspective view showing the portable chair of the above-mentioned embodiment, a side view of a state in which the seat is flipped up, a side view of a front and rear stacking state, and FIG. 3 is an exploded view showing the structure of the portable chair of the above-described embodiment. It is a perspective view.

  As shown in the figure, the portable chair of this embodiment has a leg 1 that can be moved to a place where the chair is used, that is, is not fixed, a back 2 that is fixedly supported by the leg 1, and FIG. ) And a seat 3 supported by the leg 1 so as to be swingable between a substantially horizontal use position shown in FIG. 2 and a front-up flip-up position shown in FIG. 2B, and the seat 3 is directed to the flip-up position. And a seat-up mechanism 4 as a seat-up device that is constantly energized.

  Here, the leg 1 has a pipe frame structure whose front part is inclined backward, and this pipe frame structure is formed in an arcuate shape with a rear frame 1a inclined forward on both sides of the back 2 and the seat 3 in the left-right direction. As shown in FIG. 1, the left and right front frames 1b are arranged inside the left and right rear frames 1a as shown in FIG. Are arranged in parallel with each other, and the rear end portions of the rear inclined front portion and the substantially horizontal lower portion are welded to the rear frame 1a. The left and right front frames 1b are welded to both ends of a connecting pipe 1c disposed horizontally in the left-right direction of the seat 3, and the connecting pipe 1c simultaneously connects the left and right front frames 1b to each other. As will be described later, it serves to support the seat 3 in the substantially horizontal use position.

  Further, an arcuate seat receiving plate 1d is welded and fixed from the rear part of the front part of the left and right front frames 1b to the upper part of the rear frame 1a to which the rear end part of the front part is joined, As shown in FIG. 3, the seat receiving plate 1d is formed with a bearing hole 1e, a cover mounting hole 1f, and a back mounting hole 1g, and a latch pin near the bearing hole 1e. 1h protrudes. Further, an anti-slip member 1i made of an elastic material is fixed to each of the substantially horizontal lower front part of the left and right front frames 1b and the lower end part of the left and right rear frames 1a.

  Furthermore, an elbow bracket 1j having an L-shaped cross section is welded and fixed to the upper ends of the left and right rear frames 1a so as to extend substantially horizontally in the front-rear direction. An elbow attachment hole 1k is formed at the front end, and a back attachment hole 11 is formed at the rear end of the vertical portion. The elbow bracket 1j is housed in a groove formed on the lower surface of the elbow 5 as an armrest, and the elbow 5 is screwed to the upper end of the rear frame 1a with a screw 6 inserted through the elbow mounting hole 1k. In addition, the bolt 7 inserted into the back mounting hole 11 from the screw hole formed on the outer side of the elbow 5 is protruded inward from the screw hole formed on the inner side of the elbow 5.

  The back 2 has a flat bottom plate, a back plate 2a that is recessed backward in an arcuate shape as viewed from above from the middle to the top, a back cushion 2b attached to the front surface of the back plate 2a, and a front plate of the back plate 2a. There are two back brackets 2c having an L-shaped cross section fixed by screws 6 at the lower portions of both side portions in the left-right direction, and nuts 8 are provided at the upper and lower ends of each back bracket 2c. Bolt holes 2d and 2e fixed by welding are formed.

  As a result, the rear frame 1a on both the left and right sides of the back 1 of the leg 1 has a bolt 7 inserted into the back mounting hole 11 of the elbow bracket 1j through the bolt hole 2d at the upper end of the back bracket 2c. 8 and the bolt 7 inserted through the back mounting hole 1g of the seat receiving plate 1d is fastened to the inner nut 8 via the bolt hole 2e at the lower end of the back bracket 2c. The two back plates 2a are connected to each other.

  The seat 3 is fixed to the seat plate 3a, the seat cushion 3b attached to the upper surface of the seat plate 3a, and the rear side portions of the lower surface of the bottom plate 3a by screws, and the support shaft 3c is horizontally oriented outward. And two seat brackets 3d having an L-shaped cross section projecting from each other, and an elastic portion for preventing the generation of a contact sound fixed to the middle portion of the bottom surface of the bottom plate 3a in the front-rear direction with a screw 6 spaced apart from each other in the left-right direction. It has two stopper members 3e made of material, and here, since the support shaft 3c does not penetrate the seat cushion 3b, a seat cushion 3b thicker than that of a normal portable chair is used. .

  The two support shafts 3c of the seat 3 are rotatably inserted into the bearing holes 1e of the left and right seat receiving plates 1d of the leg 1, respectively, and project outside the seat receiving plate 1d. The seat 1 is supported by the leg 1 so as to be swingable between a substantially horizontal use position and the above-mentioned front-up position, and the seat-up mechanism 4 is a seat 3 that coincides with the axis of the support shaft 3c. There are two spiral springs 9 (shown only on one side in FIG. 3) arranged on the two support shafts 3c of the leg 1 so as to be located on the same axis as the swing axis.

  Here, the support shaft 3c is formed with a cut extending in the axial direction from the tip, and the center side end of the spiral spring 9 is inserted into the cut and fixed to the support shaft 3c. The outer peripheral side end of the spiral spring 9 protrudes from the seat receiving plate 1d in a state where an appropriate torsional elastic force is applied to the spiral spring 9 so that the seat 3 can be swung up and rotated to the above-mentioned flip-up position. It is latched by the latch pin 1h.

  Each support shaft 3c is provided with a resin washer 10 for preventing wear and generation of rubbing noise inside the spiral spring 9, and an E-ring 11 for preventing the slippage is fitted inside the spiral spring 9. Furthermore, on the outside of the seat receiving plate 1d, for example, a resin cover 12 having a circular bulge formed so as to cover the spiral spring 9, the washer 10, and the E ring 11 is disposed. The cover 12 is fixed to the leg 1 by a screw 6 inserted through the cover mounting hole 1f of the seat receiving plate 1d.

  In the portable chair of this embodiment, the chair is carried into the place of use by manpower or a carriage, and the leg 1 is movably disposed at the place of use, and the seat supported by the leg 1 so as to be swingable. When the seat 3 is lowered to a substantially horizontal use position against the urging force of the spiral spring 9 by the seated person, the seat 3 in the use position and the back 2 fixedly supported by the legs 1 support the seated person. When the seated person stands up and leaves, the seat 3 automatically swings to the flip-up position by the urging force of the spiral spring 9 and is maintained in the flip-up position unless the seated person lowers. And if the said chair becomes unnecessary, it will be carried out from the place of use by manpower, a cart, etc.

  Therefore, according to the portable chair of this embodiment, when there is no seated person or when standing up, the seat 3 is always in the front-up position, so that many chairs are arranged in the lateral direction. However, because the seat 3 does not hinder the passage in the lateral direction, it is possible to secure a sufficiently wide passage without having to flip up the seat 3 one by one. It can be carried out. And this can enable quick evacuation especially in case of emergency where evacuation competes for a moment, and it is possible to avoid the occurrence of confusion for those who evacuate.

  Furthermore, according to the portable chair of this embodiment, the leg 1 has a frame structure in which the front part is tilted rearward, so that the front part of the frame structure is tilted rearward and the upper part is retracted. Even when a large number of bars are arranged in the horizontal direction, the upper part of the front part of the frame structure of the leg 1 does not hinder the horizontal direction, so that the horizontal direction can be more easily performed. Note that the front portion of the frame structure of this embodiment, that is, the left and right front frames 1b rises by tilting about 30 degrees with respect to the vertical at the lower end portion, and gradually increases in angle as it goes upward. In this case, the inclination is about 60 degrees with respect to the vertical.

  In addition, according to the portable chair of this embodiment, the frame structure of the legs 1 includes the rear frame 1a tilted forward, the front tilted backward, and the substantially horizontal lower portion on both lateral sides of the back 2 and the seat 3, respectively. 2b, and the front frame 1b is disposed on the inner side in the left-right direction of the rear frame 1a and is coupled to the rear frame 1a. As shown in FIG. In the state where the chair 3 is also raised to the flip-up position, by inserting the front frame 1b of the other leg 1 of the chair from the back side of the rear frame 1a of the leg 1 of the chair, Since the chairs can be stacked in the front-rear direction to be compact, the efficiency of storing and transporting the chairs can be increased.

  Furthermore, according to the portable chair of this embodiment, the rear frames 1a on both sides of the back 2 in the left-right direction are coupled to each other via the back plates 2a of the back 2, so Since it is not necessary to separately provide a member for joining the frames 1a, the weight of the leg 1 is reduced, so that the chair can be easily transported by manpower or a cart.

  And according to the portable chair of this embodiment, since the spiral spring 9 of the seat flip-up mechanism 4 is arranged on the leg 1 on the same axis as the swing axis of the seat 3, the seat 3 jumps. Even in the state of jumping up to the raised position, the seat flip-up mechanism 4 does not protrude in the front-rear direction or the inner side of the leg 1, so that lateral passage and front-rear stacking can be performed more easily.

  As mentioned above, although demonstrated based on the example of illustration, the portable chair of this invention is not limited to the above-mentioned example, It can change suitably within the range of description of a claim, for example, a seat flip-up The spiral spring 9 of the mechanism 4 may be provided only on one side instead of the left and right sides of the seat 3. Alternatively, the elbow 5 may be omitted, and the upper end portion of the rear frame 1a may be bent backward and coupled to the spine 2.

  Furthermore, the frame structure of the leg 1 is not limited to the pipe frame structure, and a plate material such as an angle material or a channel material may be used, and a caster may be provided at the lower end of the leg 1. The seat flip-up mechanism 4 is not limited to the one using the spiral spring 9 and may be one that lifts the seat 3 with a gas strut or the like. Further, if the front part of the frame structure of the leg 1 is inclined rearwardly within a range of about 30 to 60 degrees with respect to the vertical as a whole, the upper part of the front part of the frame structure is laterally secured while ensuring the rigidity of the leg. It is possible to avoid obstructing the traffic to.

  Thus, according to the portable chair of the present invention, when there is no seated person or when standing up, the seat is always in the front-up position, so even if a large number of chairs are arranged side by side, Since it does not hinder the passage in the lateral direction, it is possible to secure a sufficiently wide passage without having to flip up the seats one by one, and thus the passage in the lateral direction can be easily performed without taking time and effort. . And this can enable quick evacuation especially in case of emergency where evacuation competes for a moment, and it is possible to avoid the occurrence of confusion for those who evacuate.

1 leg 1a rear frame 1b front frame 1c connecting pipe 1d seat receiving plate 1e bearing hole 1f cover mounting hole 1g back mounting hole 1h latching pin 1i anti-slip member 1j elbow bracket 1k elbow mounting hole 1l back mounting hole 2 back 2a back Plate 2b Back cushion 2c Back bracket 2d Bolt hole 2e Bolt hole 3 Seat 3a Seat plate 3b Seat cushion 3c Support shaft 3d Seat bracket 3e Stopper member 4 Seat spring mechanism 5 Elbow 6 Screw 7 Bolt 8 Nut 9 Spiral spring 10 E Washer 11E Ring 12 cover

Claims (2)

A leg (1) that is movably arranged at the place of use of the chair ;
A spine (2) fixedly supported by the leg;
A seat (3) supported by the leg so as to be swingable between a substantially horizontal use position and a flip-up position that has jumped forward;
A seat flip-up means (4) that constantly urges the seat toward the spring-up position;
With
The frame structure of the leg (1) has a rear frame (1a) tilted forward on both sides of the back and the seat in the left-right direction, a front tilted front part and a front tilted front part and a lower end part of the front part. A front frame (1b) having a horizontal lower part,
The front frame (1b) is disposed on the inner side in the left-right direction of the rear frame (1a) and coupled to the rear frame,
The seat flip-up means (4) has a spiral spring (9) disposed on the leg on the same axis as the swing axis of the seat ( 3 ), and is located on the inner side in the left-right direction of the rear frame (1a). Portable chair characterized by being arranged.   The portable chair according to claim 1, characterized in that the rear frames (1a) on both sides in the left-right direction of the back (2) are connected to each other via the back.

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