Bedstand chair with movable backrest

Abstract

The utility model provides a stand chair with a movable backrest, which comprises armrest seats which are symmetrically arranged at intervals and a chair seat assembly which is arranged between the two armrest seats, a backrest assembly is movably arranged between the two armrest seats, backrest rotating shafts are symmetrically arranged on two sides of the backrest assembly, and the backrest rotating shafts are movably arranged on the chair seat assembly. The backrest rotating shafts are rotationally mounted on the corresponding armrest seats; limiting rods extending towards the armrest seats are arranged on one side or two sides of the backrest assembly, and arc-shaped limiting grooves matched with the limiting rods are formed in the armrest seats. A reset piece is arranged between the backrest assembly and the armrest seat, and the reset piece is used for enabling the backrest assembly to rotate and reset and keep the backrest assembly in a storage state after a passenger leaves; the stand chair with the movable backrest, provided by the utility model, overcomes the defect that the existing stand chair adopts a fixed backrest, so that the occupied space is relatively large.

Description

Technical Field

[0001] The utility model relates to the field of stand chairs, in particular to a stand chair with a movable backrest. Background Art

[0002] In large venues such as stadiums, theaters, and conference halls, grandstand chairs provide a comfortable seating environment for the audience. In some large-scale events, the audience flow is large, and the structure of traditional grandstand chairs may cause inconvenience in getting in and out, affecting the efficiency of personnel entry and exit and evacuation.

[0003] Existing grandstand chairs typically consist of backrests, armrests, and seats. To minimize seat space usage, existing seats typically feature reversible seats that can be flipped and folded when not in use, minimizing space usage. While the seats in these structures are reversible and foldable, the backrests are fixed and non-adjustable. This type of fixed backrest takes up excessive space, reduces pedestrian access within limited row spacing, hinders movement and evacuation, and results in poor performance. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] The problem to be solved by the utility model is to provide a grandstand chair with a movable backrest, so as to overcome the defect that the existing grandstand chair adopts a fixed backrest and thus occupies a large space.

[0006] (2) Technical solution

[0007] In order to solve the technical problem, the utility model provides a grandstand chair with a movable backrest, comprising symmetrical and spaced armrests and a seat assembly installed between the two armrests, a backrest assembly being movably installed between the two armrests, backrest rotating shafts being symmetrically provided on both sides of the backrest assembly, and the backrest rotating shafts being rotatably installed on the corresponding armrests; a limiting rod extending toward the armrests is provided on one side or both sides of the backrest assembly, and an arc-shaped limiting groove adapted to the limiting rod is provided on the armrest; a reset member is installed between the backrest assembly and the armrest, and the reset member is used to rotate and reset the backrest assembly and keep it in the stored state after the passenger leaves.

[0008] In some embodiments, L-shaped connecting plates are symmetrically provided on both sides of the backrest assembly, the backrest shaft is provided at the lower end of the connecting plate, and the limiting rod is located at the upper end of the connecting plate.

[0009] In some embodiments, when the backrest assembly is flipped open, the limit rod is placed at one end of the arc-shaped limit groove; when the backrest assembly is rotated and stored, the limit rod is placed at the other end of the arc-shaped limit groove, and the backrest assembly is in a vertical state.

[0010] In some embodiments, one end of the limiting rod is provided with a stepped disk, a portion of the stepped disk is placed in the arc-shaped limiting groove, and the other portion is placed outside the arc-shaped limiting groove.

[0011] In some embodiments, the reset member is a spring located in the armrest seat, one end of the spring is hooked on the armrest seat, and the other end is hooked on the limit rod; the spring always causes the backrest assembly to tend to rotate toward the armrest seat.

[0012] In some embodiments, the seat assembly is rotatably mounted between the two armrests; when the seat assembly is stored, the seat assembly is in a vertical position. A seat shaft is rotatably mounted on the seat assembly, and the armrests are provided with connecting seats, with both ends of the seat shaft being fixed to corresponding connecting seats.

[0013] In some embodiments, a torsion spring is installed on one side of the seat rotation shaft, and a rotation damper is installed on the other side, and the torsion spring and the rotation damper are both located in the seat assembly.

[0014] In some embodiments, L-shaped limiting plates are symmetrically provided on both sides of the seat assembly, and a first stop portion and a second stop portion corresponding to the L-shaped limiting plates are provided on the connecting seat.

[0015] In some embodiments, the chair further includes a chair leg, wherein a connecting beam is provided on the upper side of the chair leg, and two armrest seats are respectively fixed on both sides of the connecting beam.

[0016] (3) Beneficial effects

[0017] The utility model provides a grandstand chair with a movable backrest, which adopts a movable backrest component, which is rotatably mounted on the armrest seat. Through the cooperation of a limit rod, an arc-shaped limit groove and a reset member, when the passenger sits down, the backrest can be tilted back to a certain angle along with the back of the human body; when the passenger leaves, the reset member can rotate and reset the backrest and keep it in a vertical storage state, which greatly reduces the front and back dimensions of the grandstand chair; combined with the retractable seat, the depth of the grandstand chair is reduced after it is stored, and under the same row spacing, the space for pedestrians to pass is increased, which is conducive to the movement and evacuation of people; it overcomes the defect that the existing grandstand chair adopts a fixed backrest, which causes a large space occupation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a three-dimensional diagram of the unfolded seat assembly and backrest assembly of a grandstand chair with a movable backrest according to the utility model;

[0020] Figure 2 This is an exploded view of a grandstand chair with a movable backrest according to the present invention;

[0021] Figure 3 This is a three-dimensional diagram of a backrest assembly of a bleacher chair with a movable backrest according to the present invention;

[0022] Figure 4 This is a three-dimensional diagram of the armrest seat of a grandstand chair with a movable backrest according to the present invention;

[0023] Figure 5 This is a three-dimensional diagram of the seat assembly, the connection between the backrest assembly and the armrest seat of a grandstand chair with a movable backrest according to the utility model;

[0024] Figure 6 This is a three-dimensional diagram of the connection between the limiting rod and the arc-shaped limiting groove of a bleacher chair with a movable backrest according to the present invention;

[0025] Figure 7 This is a three-dimensional diagram of the internal structure of a seat assembly of a grandstand chair with a movable backrest according to the present invention;

[0026] Figure 8 This is a three-dimensional diagram of a bleacher chair with a movable backrest in a stored state;

[0027] Figure 9 This is a three-dimensional diagram of a resetting member of a bleacher chair with a movable backrest according to the present invention;

[0028] Figure 10 This is a three-dimensional diagram of the unfolded seat assembly of a grandstand chair with a movable backrest according to the utility model;

[0029] The names of the components corresponding to the various reference numerals in the figure are: 1. Armrest seat; 11. Connecting seat; 101. Arc-shaped limiting groove; 111. First stop; 112. Second stop; 2. Seat assembly; 21. Seat rotation shaft; 22. Torsion spring; 23. Rotary damper; 24. L-shaped limiting plate; 3. Backrest assembly; 31. Backrest rotation shaft; 32. Limiting rod; 33. Connecting plate; 34. Step plate; 4. Resetting member; 5. Chair foot. DETAILED DESCRIPTION

[0030] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0032] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0033] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0034] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0035] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0036] See Figures 1 to 10The present invention provides a grandstand chair with a movable backrest, comprising two armrests 1 arranged symmetrically and spaced apart, and a seat assembly 2 mounted between the two armrests 1. A backrest assembly 3 is movably mounted between the two armrests 1 and is located on the rear side of the seat assembly 2. Backrest shafts 31 are symmetrically arranged on both sides of the backrest assembly 3. The backrest shafts 31 are rotatably mounted on the corresponding armrests 1, and the backrest assembly 3 can rotate around the backrest shafts 31. A limiting rod 32 extending toward the armrests 1 is provided on one or both sides of the backrest assembly 3. The armrests 1 are provided with an arc-shaped limiting groove 101 adapted to the limiting rod 32. The limiting rod 32 and the arc-shaped limiting groove 101 cooperate to limit the unfolding angle and the stowed position of the backrest assembly 3. A reset member 4 is installed between the backrest assembly 3 and the armrest 1. The reset member 4 is used to rotate and reset the backrest assembly 3 and keep it in the stowed state after the passenger leaves.

[0037] This structure adopts a movable backrest assembly, which is coordinated by a limit rod, an arc-shaped limit groove and a reset part. When the passenger sits down, the backrest can recline to a certain angle along with the human back; when the passenger leaves, the reset part can rotate the backrest and reset it and keep it in the vertical storage state. It greatly reduces the front and back dimensions of the grandstand chair, increases the space for pedestrians to pass under the same row spacing, and facilitates the movement and evacuation of people.

[0038] In some embodiments, as Figure 2 and Figure 3 As shown, L-shaped connecting plates 33 are symmetrically provided on both sides of the backrest assembly 3. The connecting plates 33 are made of metal. The backrest shaft 31 is provided at the lower end of the connecting plates 33, and the limiting rod 32 is located at the upper end of the connecting plates 33. This structure and the provision of the connecting plates 33 facilitate the arrangement of the backrest shaft 31 and the limiting rod 32.

[0039] In some embodiments, as Figure 1 、 Figure 6 and Figure 8 As shown, when the backrest assembly 3 is flipped open (as shown in FIG. Figure 1 As shown), the limiting rod 32 is placed at one end of the arc-shaped limiting groove 101 to limit the angle of the backrest assembly 3. Figure 8 As shown), the limiting rod 32 is placed at the other end of the arc-shaped limiting groove 101 to limit the storage position of the backrest assembly 3. At this time, the backrest assembly 3 is in a vertical state, thereby reducing the front and rear dimensions of the seat.

[0040] In some embodiments, as Figure 3 、 Figure 4 and Figure 6As shown, one end of the limiting rod 32 is fitted with a stepped disc 34. The stepped disc 34 is fitted onto the limiting rod 32 and is restrained from disengaging from the limiting rod 32 by a cotter pin. The stepped disc 34 comprises a first and a second integrally connected disc. The first disc is sized to fit within the arcuate limiting groove 101, while the second disc has a larger outer diameter than the first disc. The first disc of the stepped disc 34 is positioned within the arcuate limiting groove 101, while the second disc of the stepped disc 34 is positioned outside the arcuate limiting groove 101 to prevent the limiting rod 32 from disengaging from the arcuate limiting groove 101 and ensure structural stability. A double-layer metal plate is provided within the armrest base 1, and the arcuate limiting groove 101 is provided on the double-layer metal plate.

[0041] In some embodiments, as Figure 9 As shown, the reset element 4 is a spring located within the armrest seat 1. One end of the spring is hooked onto the armrest seat 1, which is provided with a pin for the spring to hook onto. The other end of the spring is hooked onto a limit rod 32, which has a groove for the spring to hook onto. The spring constantly forces the backrest assembly 3 to rotate toward the armrest seat 1. This structure, with the reset element 4, allows the backrest to automatically reset when the occupant leaves, making it convenient to use.

[0042] In some embodiments, as Figure 1 、 Figure 8 and Figure 10 As shown, the seat assembly 2 can be rotatably installed between the two armrests 1; when the seat assembly 2 is stored, the seat assembly 2 is in a vertical state. This structure, the seat assembly 2 is in a vertical state after storage, which is more conducive to reducing the front-to-back dimension of the chair.

[0043] In some embodiments, as Figure 2 、 Figure 4 、 Figure 5 and Figure 7As shown, a seat shaft 21 is rotatably mounted on the seat assembly 2, and a connecting seat 11 is provided on the armrest seat 1. Both ends of the seat shaft 21 are fixed to corresponding connecting seats 11, allowing the seat assembly 2 to rotate relative to the seat shaft 21. A torsion spring 22 is mounted on one side of the seat shaft 21, and a rotation damper 23 is mounted on the other side of the seat shaft 21. Both the torsion spring 22 and the rotation damper 23 are located within the seat assembly 2. The torsion spring 22 is used to reset the seat assembly 2, and the rotation damper 23 is used to generate damping when the seat assembly 2 rotates, enhancing the user experience. The rotation damper 23 can adopt one-way or two-way damping. The rotation damper 23 is conventional and will not be described in detail in this embodiment. L-shaped limit plates 24 are symmetrically provided on both sides of the seat assembly 2, and the connecting seat 11 is provided with a first stop 111 and a second stop 112 corresponding to the L-shaped limit plates 24. When the seat assembly 2 is unfolded, the L-shaped stop plate 24 abuts against the first stop 111, thereby limiting the unfolded angle of the seat assembly 2. When the seat assembly 2 is retracted, the L-shaped stop plate 24 abuts against the second stop 112, thereby limiting the retracted position of the seat assembly 2 and maintaining it in an upright position. To reduce noise, rubber cushions can be installed on the first stop 111, the second stop 112, and the L-shaped stop plate 24 to reduce the impact force.

[0044] In some embodiments, as shown in Figure 1, a chair leg 5 is further included. A connecting beam is provided on the upper side of the chair leg 5, and two armrest seats 1 are respectively fixed on both sides of the connecting beam. Two connecting feet are symmetrically and spaced apart at the lower end of the chair leg 5, and the connecting feet are fixed to the external ground.

[0045] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0046] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A spectator chair with a movable backrest, comprising armrests (1) arranged symmetrically and spaced apart and a seat assembly (2) mounted between the two armrests (1), characterized in that: A backrest assembly (3) is movably installed between the two armrest seats (1), and backrest rotating shafts (31) are symmetrically provided on both sides of the backrest assembly (3), and the backrest rotating shafts (31) are rotatably installed on the corresponding armrest seats (1); a limiting rod (32) extending toward the armrest seat (1) is provided on one side or both sides of the backrest assembly (3), and an arc-shaped limiting groove (101) adapted to the limiting rod (32) is provided on the armrest seat (1); a reset member (4) is installed between the backrest assembly (3) and the armrest seat (1), and the reset member (4) is used to rotate and reset the backrest assembly (3) and keep it in a stored state after the passenger leaves.

2. The movable backrest grandstand chair according to claim 1, characterized in that: L-shaped connecting plates (33) are symmetrically provided on both sides of the backrest assembly (3), the backrest shaft (31) is provided at the lower end of the connecting plate (33), and the limiting rod (32) is located at the upper end of the connecting plate (33).

3. The movable backrest grandstand chair according to claim 1, characterized in that: When the backrest assembly (3) is flipped open, the limiting rod (32) is placed at one end of the arc-shaped limiting groove (101); when the backrest assembly (3) is rotated and stored, the limiting rod (32) is placed at the other end of the arc-shaped limiting groove (101), and the backrest assembly (3) is in a vertical state.

4. The movable backrest grandstand chair according to claim 1, characterized in that: One end of the limiting rod (32) is sleeved with a stepped disc (34), a portion of the stepped disc (34) is placed in the arc-shaped limiting groove (101), and the other portion is placed outside the arc-shaped limiting groove (101).

5. The movable backrest grandstand chair according to claim 1, characterized in that: The reset member (4) is a spring located in the armrest seat (1), one end of the spring is hooked on the armrest seat (1), and the other end is hooked on the limit rod (32); the spring always causes the backrest assembly (3) to have a tendency to rotate toward the armrest seat (1).

6. The movable backrest grandstand chair according to claim 1, characterized in that: The seat assembly (2) can be rotatably installed between the two armrest seats (1); when the seat assembly (2) is stored, the seat assembly (2) is in a vertical state.

7. The movable backrest grandstand chair according to claim 6, characterized in that: A seat rotating shaft (21) is rotatably mounted on the seat assembly (2), a connecting seat (11) is provided on the armrest seat (1), and both ends of the seat rotating shaft (21) are respectively fixed on corresponding connecting seats (11).

8. The movable backrest grandstand chair according to claim 7, characterized in that: A torsion spring (22) is installed on one side of the seat rotation shaft (21), and a rotation damper (23) is installed on the other side. Both the torsion spring (22) and the rotation damper (23) are located in the seat assembly (2).

9. The bleacher chair with a movable backrest according to claim 7, characterized in that: L-shaped limiting plates (24) are symmetrically provided on both sides of the seat assembly (2), and a first stopper (111) and a second stopper (112) corresponding to the L-shaped limiting plates (24) are provided on the connecting seat (11).

10. The movable backrest spectator chair according to claim 1, characterized in that: It also includes a chair foot (5), the upper side of which is provided with a connecting beam, and two armrest seats (1) are respectively fixed on both sides of the connecting beam.

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