WO2020071118A1

WO2020071118A1 - Storage type seating

Info

Publication number: WO2020071118A1
Application number: PCT/JP2019/036477
Authority: WO
Inventors: 宗一松田
Original assignee: コトブキシーティング株式会社
Priority date: 2018-10-02
Filing date: 2019-09-18
Publication date: 2020-04-09
Also published as: JP2020056225A; JP7088548B2

Abstract

Provided is low cost, storage type seating that uses a simple configuration. Storage type seating (1) comprises a plurality of chairs (10), a multilevel floor platform (20) on which the chairs (10) are fixed, and a back drive mechanism (30). The chairs (10) have backs (11) and seats (12). The back drive mechanism (30) comprises: a pair of back drive units (31) that are affixed to the inside of the back (11); a main shaft (32) that serves as the pivot to support rotation of the back drive unit (31); a pair of back rotary members (33) that allow the back drive units (31) to rotate; a primary rotational member (34) that allows the back rotary members (33) to rotate; a shaft (35) that allows the main rotational member (34) to rotate; an actuator (40) that drives the shaft (35); and a support member (50) that supports the back rotary member (33) from underneath. Movement of the back (11) to a usage position and a storage position by the back drive mechanism (30) is allowed, and the floor platform (20) is stabilized by the support provided by the support member (50) and a second end (33b) of the back rotary member (33) of the back drive mechanism (30).

Description

Retractable bleachers

The present invention relates to a retractable seat.

There is known a retractable seat that can store a plurality of seats (chairs) on a wall side in a building such as a venue or a gymnasium, and can arrange the chairs as needed (Patent Document 1).

Patent Literature 1 discloses a retractable seat having a first link that locks at a use position of a back and a second link that is connected to the first link and that is rotated by an actuator. When a seat is seated, a large force is applied to the back. It is disclosed to prevent the back from unexpectedly falling down even if it is added.

Japanese Patent No. 4914903

In Patent Document 1, the back is rotated between the use position and the storage position. However, there is a problem that a floor base lock member driving mechanism for supporting a floor portion near the back is also required, and the structure is complicated.

The object of the present invention is to provide a low-cost storage seat with a simple structure.

A stowable spectator according to one aspect of the present invention includes a plurality of steps that can be moved between a stair-like unfolding position and a stowed storage position, and a front end of the floor which is located at a front end thereof. A seat protruding forward from the seat, and a back provided on the front end of the floor base at a rear position of the seat so as to be able to be turned between a standing use position and a storage position where the seat has fallen rearward. And a back drive mechanism for moving the back between the use position and the stowed position, and a stowable seat, wherein the back drive mechanism is connected to a lower end of the back. And a second end located below the first end in the use position, wherein the back rotates the back between the use position and the storage position. A rotating member, provided on the floor base one stage below the floor base on which the back and the seat are provided, Serial comprises a support member for supporting from below in contact with the second end in the use position, an actuator for rotating the back pivot member.

In the above aspect, for example, a rotatable roller may be provided at the second end.

In the above aspect, for example, the second end may be provided with a leg whose height can be adjusted.

In the above aspect, for example, a main rotating member is provided below the back, and in the back rotating member, a connecting portion provided between the first end and the second end includes the main rotating member. It may be connected to a part separated by a predetermined distance from the rotation center of the member.

In the above aspect, for example, the main rotating member may be a main rotating gear having a gear portion on an outer peripheral edge, and the gear of a shaft connected to the actuator may be fitted with the main rotating gear.

In the above aspect, for example, the support member is a support column vertically extending from directly below the back of the one-stage lower floor, and the second end is mounted on the top of the support column at the use position. May be placed.

The retractable viewing seat of the present invention is provided with a back drive mechanism at the lower end of the back, and a support member for supporting the back drive mechanism from below is provided on the floor below, so that there is no extra protruding part, and the whole is By being made compact and supporting the floor base via the back drive mechanism, the back drive mechanism can be made versatile and a simplified configuration without waste can be realized.

3A and 3B show an example of a retractable seat according to the first embodiment of the present invention, in which FIG. (A) is a simplified diagram enlarging portion A of FIG. 1 (b), and (b) is a simplified diagram enlarging portion B of FIG. 1 (c). The front perspective view of three chairs in the deployment position of the stowable seat according to the same form. The schematic diagram which shows the operation | movement of 1st Example of 1st Embodiment of the back of a retractable seat and the back drive mechanism which concern on the same form, (a) Unfolding position, (b) Storage position. FIG. 4 is a schematic view showing the operation of the back drive mechanism of FIG. The operation | movement of the back drive mechanism when a back changes from a storage position to a deployment position is shown, (a) a storage position, (b) transition halfway position, (c) deployment position. It is a figure which shows the arrangement | positioning state of a back drive mechanism in a deployment position, (a) The enlarged view of a back drive mechanism, (b) The figure of a stowable seat. The schematic diagram which shows the operation | movement of the example of the back of a stowable seat and the back drive mechanism which concern on 2nd Embodiment of this invention, (a) deployment position, (b) storage position. FIG. 2 is a cross-sectional view illustrating an example of a detailed structure of the roller according to the first embodiment. Sectional drawing which shows the example of the detailed structure of the leg part which concerns on 2nd Embodiment.

Hereinafter, a preferred embodiment of the retractable seat according to the present invention will be described in detail with reference to FIGS.

FIG. 1 shows an example of a retractable seat according to the present invention, wherein (a) is a plan view in a developed position, (b) is a side view in a developed position, and (c) is a side view in a stored position. 2A and 2B show the retractable seats of FIG. 1, wherein FIG. 2A is a simplified diagram enlarging portion A of FIG. 1B, and FIG. 2B is a simplified diagram enlarging portion B of FIG. 1C. is there. An outline of the retractable seat will be described with reference to FIGS. 1 and 2.

収納 The retractable seat 1 of the present embodiment includes a plurality of chairs 10, a plurality of steps 20 for fixing the chairs 10, and a back drive mechanism 30. The chair 10 has a back 11 provided so as to be able to be turned upside down by a back drive mechanism 30 and a seat 12 on which a spectator sits.

As shown in FIGS. 1 (a), 1 (b) and 2 (a), chairs are arranged in a building such as a venue or a gymnasium so that the audience can use them. The stair-like state is referred to as a deployed position, in particular, a state in which the back 11 is upright, as shown in FIG. 2 (b). A state in which the floor bases 20 are arranged so as to overlap vertically and are stored in the storage unit 100 provided on the side wall in the building is defined as a storage position.

The chair 10 is fixed to the front end 21 of each floor base 20, the seat 12 is provided to protrude forward of the front end 21, and the back 11 is located at the rear position of the seat 12, with the use position standing on the front end 21. It is provided so that it can be turned upside down between the storage position that has fallen backward. The back drive mechanism 30 is disposed at the lower end 11a of the back 11, and can move the back 11 between a use position and a storage position. The movement is a movement between the standing state and the falling state of the back 11, and is also a rotation about the fulcrum.

In the retractable seat 1 of the present embodiment, a beam 2 is fixed to the lower surface of each floor 20, and the beam 2 is fixed to a penetrating member 3 provided at the rear end 22 of the floor 20. . The floor base 20 has a support structure that is supported in a cantilevered state by leg members (not shown) fixed to the rear surface of the penetrating material 3 via the penetrating material 3, and a travel disposed at a lower end portion of the supporting structure. The retractable seat 1 can be moved by the rollers.

フレーム A frame 4 having a U-shaped cross section with an opening facing downward is fixed to the front end 21 of each floor base 20 so as to cross the plurality of chairs 10. A back drive mechanism 30 is housed in the frame 4. An armrest 13 of a chair 10 is fixed to an upper surface of the frame 4, and a seat 12 is rotatably attached to the armrest 13. Since the chairs 10 adjacent to each other are connected by the armrests 13, the bonding strength between the chairs 10 is strong, a stable state is maintained, and the audience and the like can sit down with confidence.

FIG. 3 is a front perspective view of three chairs in the extended position of the retractable seat. FIGS. 4A and 4B are schematic diagrams showing an example of the operation of the back of the retractable seat and the back drive mechanism according to the first embodiment, wherein FIG. 4A shows an unfolded position (used position) and FIG. 5A and 5B are schematic diagrams showing the operation of the back drive mechanism in FIG. 4, wherein FIG. 5A shows a deployed position (used position) and FIG. 5B shows a stored position. A first embodiment of the back drive mechanism 30 will be described in detail with reference to FIGS.

The back drive mechanism 30 includes a pair of back drive units 31 fixed to the inner surfaces of the back 11 of the chair 10 at the left and right ends in FIG. 3, a main shaft 32 that supports the rotation of the back drive unit 31 and serves as a rotation fulcrum, A pair of back rotation members 33 for rotating the back drive unit 31, a main rotation member 34 for rotating the back rotation member 33, a shaft 35 for rotating the main rotation member 34, and driving the shaft 35. An actuator 40 and a support member 50 that supports the spinning member 33 from below are provided.

The back drive unit 31 is provided on at least the left and right chairs 10 of the plurality of chairs 10. However, when the number of the chairs 10 is large, for example, when the number is five or more, the chairs 10 may be provided on the middle chair 10 in addition to the chairs 10 on the left and right ends.

The back drive unit 31 of the present embodiment is formed of metal and has a first back drive unit 31 a having an L-shaped cross section, and is fixed to one end of the first back drive unit 31 a and directly contacts the inner surface of the lower end 11 a of the back 11. A second back drive unit 31b having a fixed angular shape and strength, and the other end of the first back drive unit 31a opposite to the one end to which the second back drive unit 31b is fixed is connected to the center of rotation of the back 11. And the main shaft 32. The second back drive unit 31b extends between the chairs at both ends so as to cross the plurality of chairs 10, and connects the backs of the plurality of chairs 10. The main shaft 32 is provided on a pair of protrusions 5 projecting upward from the frame 4.

The protrusion 5, the main shaft 32, and the back drive unit 31 are housed in an opening 11b formed inside the back 11. Thus, the upper portion of the back drive mechanism 30 can be stored compactly without protruding from the back 11.

The back rotation member 33 is made of a single metal plate, and has a first end 33a connected to the back drive unit 31 via a connection shaft 31c, and a second end located opposite to the first end 33a. 33b, and a rotatable roller 36 is provided at the second end 33b. At a position corresponding to the back drive unit 31 of the frame 4, a pair of ribs 4 a extending downward and orthogonal to the direction in which the frame 4 extends is provided so as to sandwich the pair of back rotation members 33. ing.

The back rotation member 33 has a connecting portion 37 provided between the first end 33a and the second end 33b. The connecting portion 37 is connected to the side surface of the main rotating member 34 at a portion separated from the rotation center O of the main rotating member 34 by a predetermined distance D, and interlocks with the rotation of the main rotating member 34 supported by the pair of ribs 4a. It is possible to pivot largely (see FIGS. 3, 5, and 6).

Further, the frame 4 is provided with a first protruding portion 6 whose height protruding upward can be adjusted, and when the retractable seat 1 is in the use position, the connecting shaft 31c is moved to the head of the first protruding portion 6. May be mounted on the device. Further, the frame 4 is provided with a second protruding portion 7 that can be adjusted to a lower height so that the roller 36 comes into contact with the second protruding portion 7 when the retractable viewing seat 1 is in the storage position. It may be. The

protrusions

6 and 7 are, for example, bolts.

The shaft 35 is rotatably supported by the rib 4a. The actuator 40 is, for example, a motor, and is connected to the shaft 35, and transmits the drive of the actuator 40 to the shaft 35. The actuator 40 may be provided in each of the back drive mechanisms 30, or may be a mechanism that simultaneously moves a plurality of back drive mechanisms 30. In the embodiment shown in FIG. 3, an actuator 40 is disposed at a lower end of one chair 10, and the actuator 40 is interlocked with a shaft 35 disposed so as to cross the plurality of chairs 10, and a plurality of back drive mechanisms 30. Are driving at the same time.

In the present embodiment, the gear 35a of the shaft 35 provided on the outer peripheral edge of the shaft 35 and the gear portion 34a provided on the outer peripheral edge of the main rotating member 34 are fitted to transmit the rotation of the shaft 35 to the main rotating member 34. doing. By fitting the main rotating member 34 and the shaft 35, even if a force is applied to the back 11, stable sitting can be achieved without the back 11 falling down. The fitting method is not limited to a gear, but may be a belt method, a chain method, a magnetic force method, or the like.

The support member 50 is fixed below the chair 10 on the floor base 20 one step below the floor base 20 on which the back drive mechanism 30 provided below the chair 10 is installed. The second end 33b is placed on the top 51 of the supporting member (supporting column) 50 at the use position. In addition, in FIG. 4, the floor provided with the back 11 and the seat 12 of the chair 10 is denoted by reference numeral 20 and the reference numeral of the lower floor is denoted by 20a (20) in FIG.

Since the back drive mechanism 30 is disposed in the frame 4 at the lower end 11a of the chair 10, the back drive mechanism 30 does not protrude back and forth of the chair 10, and since the mounting portion does not protrude on the outer surface of the back 11, floor back The space for the platform 20, especially the passage for the audience, etc. can be widened.

Hereinafter, the operation of the back drive mechanism 30 will be described in detail.
When the actuator 40 is driven, the shaft 35 connected to the actuator 40 rotates, and the gear 35a of the shaft provided on the outer periphery of the shaft 35 and the gear portion 34a provided on the outer periphery of the main rotating member 34 fit. The rotation of the shaft 35 is transmitted to the main rotating member 34, and the main rotating member 34 rotates. The main rotation member 34 rotates around the rotation center O, and the connecting portion 37 connected to the main rotation member 34 rotates at the same time.

When it is desired to dispose the back 11 from the use position to the storage position (see FIGS. 4 and 5A to 5B), the main rotation is performed so as to move the first end 33a of the back rotation member 33 upward. The member 34 is rotated (clockwise rotation in FIGS. 4 and 5). When the first end 33a moves upward and the first end 33a moves upward with the rotation of the connection part 37 about the rotation center O of the main rotation member 34 in conjunction with the rotation of the main rotation member 34, The back drive unit 31 rotates so as to be pushed up about the main shaft 32.

In response to the upward movement of the first end 33a, the back drive unit 31 is rotatably connected to the first end 33a by the connection shaft 31c, so that the rotation about the main shaft 32 is smoothly performed. . Further, the rotation in a state where the side surface of the first end portion 33a and the inner surface of the first back drive portion 31a are in contact with each other stabilizes the rotational movement.

(4) The rotation of the back drive unit 31 causes the second back drive unit 31b to move down, so that the back 11 fixed to the second back drive unit 31b falls down, and the back 11 is positioned at the storage position. Here, by providing the second protrusion 7 on the frame 4, when the back 11 is positioned at the storage position, the roller 36 contacts the second protrusion 7 and serves as a stopper, and the back 11 is Excessive rotation and contact with the floor 20 can be prevented.

When it is desired to dispose the back 11 from the storage position to the use position (see FIGS. 4 and 5B to 5A), the main rotation is performed so as to move the first end 33a of the back rotation member 33 downward. The member 34 is rotated (counterclockwise rotation in FIGS. 4 and 5). When the first end 33a moves downward and the first end 33a moves downward with the rotation of the connection part 37 about the rotation center O of the main rotation member 34 in conjunction with the rotation of the main rotation member 34, The back drive unit 31 rotates so as to be pulled about the main shaft 32.

The first end 33a moves to pull the connecting shaft 31c, the back drive unit 31 rises, and the back 11 fixed to the back drive unit 31 stands. Following the movement of the first end 33a, the second end 33b moves downward and reaches the lowest point, and at the same time, the roller 36 provided on the second end 33b is placed on the support member 50. (See FIG. 4A). That is, the support member 50 contacts the second end 33b and supports the second end 33b from below. The rollers 36 can absorb positional errors and fluctuations.

FIG. 6 shows the operation of the back drive mechanism 30 when the back 11 transitions from the storage position to the use position (deployment position). The shaft 35 rotates in the direction of arrow A (clockwise rotation) as shown in FIG. 6 (b), which shows the transition position from the storage position (same as FIG. 5 (b)) in FIG. The main rotating member 34 fitted to the shaft 35 rotates in the direction of arrow B in conjunction with the rotation of the shaft 35 (counterclockwise rotation). Then, with the movement of the connecting portion 37 interlocked with the rotation of the main rotation member 34, the back rotation member 33 rotates, and the first end 33a moves downward. Further, the back drive unit 31 connected at the first end 33a of the back rotation member 33 via the connection shaft 31c rotates in the direction of arrow C so as to be pulled around the main shaft 32 (counterclockwise rotation). . As a result, the use position shown in FIG. 6C is the same as that shown in FIG.

The floor base 20 is supported by a support member 50 provided on the floor base 20 and a back rotation member 33 provided one step above, and a floor base one step below the back rotation member 33 provided on the floor base 20. With the two supports of the support member 50 provided on the 20a, vibrations of the floor base 20 due to movement of the audience or seating can be absorbed, and a sense of security and stability at the use position can be maintained.

Although the support by the support member 50 has been described, the stop position of the roller 36 can be adjusted by providing the protrusion 6 and mounting the connection shaft 31c, and the position can be adjusted more accurately.

FIG. 7 is an explanatory view showing an arrangement state of the back drive mechanism 30 at the use position (deployment position). FIG. 7A is the same as FIG. 5A and FIG. 6C, but is an extension obtained by virtually connecting and extending the connection shaft 31 c of the back drive unit 31 and the rotation center O of the main rotation member 34. Line L1 has been added. Here, the connecting portion 37 of the back rotation member 33 is located not in the extension line L1 but in the direction in which the center P has advanced along the direction of rotation when transitioning to the use position. Specifically, an extension line L2 connecting the rotation center O of the main rotation member 34 and the center P of the connecting portion 37 has a rotation direction of the main rotation member 34 corresponding to the angle θ when viewed from the extension line L1 (see FIG. b) in the direction of arrow B).

により With such an arrangement, even if a spectator sits on the seat 12 and leans against the back 11, the position of the back 11 can be stably maintained. That is, when a spectator leans on the back 11, a rotational force in the X direction is generated to further tilt the back 11 as shown in FIG. 7B. If the center P of the connecting portion 37 is on the extension line L1 (or further left side in FIG. 7A), the rotational force in the X direction is transmitted to the connecting portion 37 via the back rotation member 33, and The force of rotating the rotating member 34 in the X direction may help the back 11 to fall in the X direction.

However, the center P of the connecting portion is on the extension line L2, and a force in the Y direction opposite to the X direction is applied to the connecting portion 37 as shown in FIG. 7B. Further, an effect in the direction of arrow Z is generated from the top 51 of the support member (support column) 50. As a result, even if a spectator or the like sits on the seat 12 and leans on the back 11, the back turning member 33 can maintain a stable and upright state.

In the retractable seat 1 of the present embodiment, the back 11 can be positioned between the use position and the storage position by the back drive mechanism 30, and the appearance of the chair 10 is improved without the back drive mechanism 30 protruding around the back. Good and compactly accommodated in the frame 4, the floor base 20 is stabilized via the back rotation member 33 by the support member 50 arranged on the floor base 20 a one step below. In addition, by providing the back drive mechanism 30 with the functions of rotating the back 11 and supporting the floor platform 20, the configuration is simplified, and the stowable seat 1 with low cost and good workability can be provided. .

FIG. 8 is a schematic view showing the operation of the back of the retractable seat and the back drive mechanism according to an example of the second embodiment. FIG. A second embodiment of the back drive mechanism 30 will be described with reference to FIG.

In the second embodiment, the roller 36 provided at the second end 33b of the first embodiment is a leg 38 whose height can be adjusted. The other configuration is the same as that of the first embodiment, and the description is omitted. The support member 50 contacts the second end 33b via the leg 38 to support the second end 33b from below, and the leg 38 can absorb positional errors and fluctuations.

In the second embodiment, as shown in FIG. 8B, when the back 11 is positioned at the storage position, the leg 38 contacts the front end 4 b of the frame 4, so that the front end 4 b May function as a stopper similar to the protrusion 7 in the first embodiment.

In the roller 36 in the first embodiment and the leg 38 in the second embodiment, at least a portion of the roller 36 or the leg 38 that contacts the top 51 may be formed of resin or rubber.

In other words, in the case of a roller, as shown in FIG. 9A, the roller body 36b of the roller 36 that can rotate around the axis 36a may be made of resin. Further, as shown in FIG. 9B, the roller body 36Ab of the roller 36A rotatable around the axis 36Aa may be made of metal, and the outer peripheral portion 36Ac may be made of rubber or resin.

Similarly, in the case of the legs, as shown in FIG. 10A, the legs 38 may be entirely formed of resin. Also, as shown in FIG. 10B, the leg body 38Aa, which is a screw, may be made of metal, and the elastic part 38Ab made of rubber may be provided on the head of the screw that comes into contact with the support member 50. Good.

樹脂 As the resin used for the roller and the legs, it is preferable to use a resin such as nylon or polyacetal having high strength, but the resin is not limited to this, and a resin having the same strength can be used. When a polyacetal resin is used, it may be a homopolymer or a copolymer.

構成 With this configuration, it is possible to reduce abnormal noise caused by rubbing when the roller 36 and the leg 38 come into contact with the support member 50.

Note that the present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, dimension, numerical value, form, number, location, and the like of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved.

The retractable seat according to the present invention can be easily moved between the use position and the storage position of the back, and is applicable to a field requiring a simplified configuration in which the floor stand is also stable.

1 stowable spectator seat 2 beam material 4 frame 5 protrusion 10 chair 11 back 11a lower end 11b opening 12 seat 13 armrest 20 floor stand 21 front end 22 rear end 30 back drive mechanism 31 back drive unit 32 main shaft 33 back rotation Moving member 33a First end 33b Second end 34 Main rotating member 35

Shaft

36, 36A roller 37 Connecting

portion

38, 38A leg 40 Actuator 50 Support member (support column)
51 top

Claims

A multi-stage floor base that can be moved between a stair-like deployment position and a vertically stacked storage position,
A seat provided at the front end of the floor base so as to protrude forward from the front end thereof, and a use position in which the seat stands upright on the front end of the floor base at a rear position of the seat, and a storage position in which the storage position falls rearward. A chair having a back that can be raised and lowered between the chair,
A back drive mechanism for moving the back between the use position and the storage position;
A retractable bleacher with
The back drive mechanism,
A first end connected to a lower end of the spine, and a second end located below the first end in the use position; A back turning member for turning between the
A support member that is provided on the floor base one stage below the floor base on which the back and the seat are provided, and that contacts the second end at the use position and supports the floor from below,
An actuator for rotating the back rotation member,
Retractable bleachers.
The retractable seat according to claim 1,
A rotatable roller is provided at the second end,
Retractable bleachers.
The retractable seat according to claim 1,
The second end is provided with a height-adjustable leg.
Retractable bleachers.
The retractable seat according to any one of claims 1 to 3,
A main rotating member is provided below the back,
A connecting portion provided between the first end portion and the second end portion, the connecting portion provided at a predetermined distance from a rotation center of the main rotating member;
Retractable bleachers.
The retractable seat according to claim 4,
The main rotating member is a main rotating gear having a gear portion on an outer peripheral edge,
The gear of the shaft connected to the actuator and the main rotating gear are fitted,
Retractable bleachers.
A retractable seat according to any one of claims 1 to 5,
The support member is a support column vertically extending from directly below the back of the one-stage lower floor, and the second end is placed on the top of the support column in the use position.
Retractable bleachers.