An automatically retractable stand seat

Abstract

The utility model discloses a kind of automatically retracted bleachers, belong to bleachers technical field, including rear bleachers, the storage groove in rear bleachers one side surface is slidably connected with front bleachers, the top surface of front bleachers is equipped with evenly distributed seat, the cushion of each seat is fixedly connected with the top surface of front bleachers, the backrest of each seat is fixedly connected with the side surface of mounting rod, the bottom surface of mounting rod is fixedly connected with two connecting rods at least vertically, the side surface bottom of connecting rod is fixedly connected with boss column, each connecting rod is connected with the top surface of front bleachers by a connecting assembly, and connecting assembly includes support seat, fixed plate, triangular plate and limiting rod.The utility model uses the above structure to a kind of automatically retracted bleachers, can realize the automatic turnover folding of whole row of seat backrest, and it is convenient to retract for entire movable bleachers.

Description

Technical Field

[0001] This utility model belongs to the field of grandstand seating technology, and in particular relates to an automatically retractable grandstand seat. Background Technology

[0002] Movable grandstands are widely used in various large stadiums, schools, multi-functional conference halls, exhibition halls, theaters, concert halls, etc., maximizing the functionality of the venue and meeting the diverse needs of various venues.

[0003] Chinese invention patent application CN202310306233.3 discloses a movable grandstand flipping device, including a rear grandstand and a front grandstand installed at one end of the rear grandstand. Support rods are installed at the lower ends of both the rear and front grandstands. A hinged baffle is fixedly installed on the front grandstand, and a central shaft is rotatably installed on the hinged baffle. A fixed shaft is fixedly installed on the central shaft. A first seat is provided inside the front grandstand, and a second seat is installed on the fixed shaft. The first and second seats are vertically distributed. A first side groove is opened on both sides of the first seat, and a first side plate is installed in the first side groove.

[0004] Although the grandstand in the above structure can be pushed to move the rack along with the front grandstand, and the rack moves to rotate the gear, thereby realizing the automatic flipping and opening or folding of the second seat, only a single seat can be flipped in the above process. It cannot achieve the flipping, folding or unfolding of the entire row of seats, which increases the workload of the grandstand manager when folding and unfolding the entire movable grandstand.

[0005] To solve the above problems, a new type of grandstand seating is needed. Utility Model Content

[0006] The purpose of this invention is to provide an automatically retractable grandstand seat that can automatically flip and fold the backrests of the entire row of seats, making it convenient to retract the entire movable grandstand.

[0007] To achieve the above objectives, this utility model provides an automatically retractable grandstand seat, including a rear grandstand. A front grandstand is slidably connected to a storage groove on one side of the rear grandstand. Seats are evenly distributed on the top surface of the front grandstand. The seat cushion of each seat is fixedly connected to the top surface of the front grandstand, and the backrest of each seat is fixedly connected to one side of a mounting rod. At least two connecting rods are vertically fixedly connected to the bottom surface of the mounting rod. A protruding post is fixedly connected to the bottom side of each connecting rod. Each connecting rod is connected to the top surface of the front grandstand via a connecting assembly, which includes a support base, a fixing plate, and three... The corner plate and the limiting rod are fixedly connected to the top surface of the front grandstand. The supporting base and the fixed plate are rotatably connected to the middle of the connecting rod. The middle of the corner plate is rotatably connected to the fixed plate through a first rotating shaft. A torsion spring is provided on the first rotating shaft. A roller is rotatably connected to the top of the corner plate. The roller is correspondingly set with a protrusion on the bottom surface of the top plate of the rear grandstand. A horizontal shaft is fixedly connected to the bottom of the corner plate. The middle of the limiting rod is rotatably connected to the fixed plate. One end of the limiting rod is slidably connected to a through hole on the curved side wall of the horizontal shaft. The other end of the limiting rod is correspondingly set with the protrusion.

[0008] Preferably, the support base is provided with a first arc-shaped groove centered on the rotational connection point of the support base and the connecting rod, and the protruding post is slidably connected in the first arc-shaped groove.

[0009] Preferably, the fixing plate has a second arc-shaped groove, the center of which is located at the rotational connection point between the triangular plate and the fixing plate, and a horizontal shaft is slidably connected inside the second arc-shaped groove.

[0010] Preferably, the protrusion is detachably connected to the bottom surface of the top plate of the rear grandstand, and the length direction of the protrusion is the same as the horizontal movement direction of the roller.

[0011] Preferably, the rear grandstand is connected to the front grandstand via a horizontal drive device. Two horizontal drive devices are provided and symmetrically arranged on the two vertical sides of the rear grandstand. The extension and retraction direction of the extension and retraction part of the horizontal drive device is the same as the movement direction of the front grandstand.

[0012] Preferably, the triangular plate is provided with a horizontally arranged slider, and the top side of the connecting rod is rotatably connected to a movable rod, the movable rod having a limit groove, and the slider being slidably connected within the limit groove.

[0013] Therefore, the automatic retractable grandstand seat of this utility model with the above-mentioned structure has the following beneficial effects: by using the connecting component in conjunction with the rear grandstand, the automatic flipping and folding of the backrests of the entire row of seats can be realized, and the horizontal drive device can be used to facilitate the retraction and unfolding of the entire movable grandstand.

[0014] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment of an automatically retractable grandstand seat according to the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of an embodiment of an automatically retractable grandstand seat according to the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of an embodiment of an automatically retractable grandstand seat according to the present invention;

[0018] Figure 4 This is a structural schematic diagram of an embodiment of the connecting component in an automatically retractable grandstand seat according to the present invention.

[0019] In the diagram: 1. Rear grandstand; 2. Storage slot; 3. Front grandstand; 4. Seat cushion; 5. Backrest; 6. Mounting rod; 7. Connecting rod; 8. Protruding column; 9. Connecting assembly; 91. Support base; 92. Fixing plate; 93. Triangular plate; 94. Limiting rod; 95. First rotating shaft; 96. Roller; 97. Horizontal shaft; 10. Protruding rib; 11. First arc-shaped groove; 12. Second arc-shaped groove; 13. Horizontal drive device; 14. Slider; 15. Movable rod; 16. Limiting groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example

[0023] Reference Figure 1-4As shown, this embodiment provides an automatically retractable grandstand seat, including a rear grandstand 1, with a front grandstand 3 slidably connected to a storage groove 2 on one side of the rear grandstand 1. The top surface of the front grandstand 3 is provided with evenly distributed seats, each seat cushion 4 being fixedly connected to the top surface of the front grandstand 3, and each seat backrest 5 being fixedly connected to one side of a mounting rod 6. At least two connecting rods 7 are vertically fixedly connected to the bottom surface of the mounting rod 6, and protruding posts 8 are fixedly connected to the bottom side of the connecting rods 7. Each connecting rod 7 is connected to the top surface of the front grandstand 3 via a connecting assembly 9. The connecting assembly 9 includes a support base 91, a fixing plate 92, a triangular plate 93, and a limiting rod 94. The support base 91 and the fixing plate 92 are both fixedly connected to the top surface of the front grandstand 3, and the distance from the support base 91 to the seat cushion 4 is less than the distance from the fixing plate 92 to the seat cushion 4. The support base 91 is rotatably connected to the middle of the connecting rods 7, and the rotation of the connecting rods 7 on the support base 91 can cause the backrest 5 to flip. The middle part of the triangle 93 is rotatably connected to the fixed plate 92 via a first rotating shaft 95. A torsion spring is provided on the first rotating shaft 95. Specifically, the rotational connection is as follows: the middle part of the triangle 93 is rotatably connected to the first rotating shaft 95, which is horizontally fixed to the fixed plate 92. A torsion spring is provided on the first rotating shaft 95, with one end fixedly connected to the first rotating shaft 95 and the other end fixedly connected to the triangle 93. A roller 96 is rotatably connected to the top of the triangle 93, and a horizontal shaft 97 is fixedly connected to the bottom of the triangle 93. The roller 96 is correspondingly arranged with the protrusion 10 on the bottom surface of the top plate of the rear grandstand 1. When the roller 96 contacts the protrusion 10, it can press down the top of the triangle 93, thereby causing the horizontal shaft 97 at the bottom of the triangle 93 to rotate upward. The middle part of the limiting rod 94 is rotatably connected to the fixed plate 92, one end of the limiting rod 94 is slidably connected in the through hole on the curved side wall of the horizontal shaft 97, and the other end of the limiting rod 94 is correspondingly set with the protrusion 8.

[0024] When the front grandstand 3 moves into the storage slot 2 of the rear grandstand 1 for storage and unfolding, the roller 96 contacts the convex rib 10 first, causing the top of the triangular plate 93 to press down. The horizontal axis 97 at the bottom of the triangular plate 93 rotates upward. The horizontal axis 97 drives one end of the limiting rod 94 to rotate upward with the horizontal axis 97. According to the lever principle, the other end of the limiting rod 94 will inevitably rotate downward. At this time, the limiting rod 94 moves away from the movement trajectory of the convex post 8 and loses its limiting effect on the convex post 8. When the front grandstand 3 continues to move into the storage slot 2 of the rear grandstand 1, the backrest 5 can be flipped towards the seat cushion 4 under the pushing action of the rear grandstand 1 to achieve folding. The entire row of seats can be unfolded. When the front grandstand 3 moves out of the storage slot 2 of the rear grandstand 1, the backrest 5 moves out of the storage slot 2 first. At this time, flipping the backrest 5 can unfold the backrests of the entire row of seats. When the front grandstand 3 continues to move out of the storage slot 2 of the rear grandstand 1, the roller 96 separates from the convex 10, and the triangular plate 93 resets under the action of the torsion spring. At this time, the limiting rod 94 returns to the movement trajectory of the convex post 8 when the connecting rod 7 rotates with the backrest 5 folding. If the convex post 8 rotates upward, it will drive the limiting rod 94 to rotate, so that the end of the limiting rod 94 away from the convex post 8 contacts the top surface of the front grandstand 3, thereby locking the backrest 5 in the unfolded state.

[0025] In a further preferred embodiment, the support base 91 is provided with a first arc-shaped groove 11 centered on the rotational connection point between the support base 91 and the connecting rod 7, and a protruding post 8 is slidably connected within the first arc-shaped groove 11.

[0026] In use, the first arc-shaped groove 11 can limit and support the protruding post 8, increasing the stability of the movement of the protruding post 8 and supporting the connecting rod 7.

[0027] In a further optimized design, a second arc-shaped groove 12 is provided on the fixing plate 92. The center of the second arc-shaped groove 12 is located at the rotational connection point between the triangular plate 93 and the fixing plate 92. A horizontal shaft 97 is slidably connected inside the second arc-shaped groove 12.

[0028] In use, the second arc-shaped groove 12 can limit and support the horizontal axis 97, increasing the stability of the horizontal axis 97's movement and supporting the triangular plate 93.

[0029] In a further optimized design, the protruding rib 10 is detachably connected to the bottom surface of the top plate of the rear grandstand 1, and the length direction of the protruding rib 10 is the same as the horizontal movement direction of the roller 96.

[0030] In use, the convex rib 10 and the bottom surface of the top plate of the rear grandstand 1 can be connected by bolts. Since the convex rib 10 is prone to wear when in contact with the roller 96, the bolts can be used to easily replace the convex rib 10.

[0031] In a further preferred embodiment, the rear grandstand 1 is connected to the front grandstand 3 via a horizontal drive device 13. Two horizontal drive devices 13 are provided and symmetrically arranged on the two vertical sides of the rear grandstand 1. The extension and retraction direction of the extension and retraction parts of the horizontal drive devices 13 is the same as the movement direction of the front grandstand 3.

[0032] In use, the horizontal drive device 13 can be a hydraulic cylinder or a pneumatic cylinder. The horizontal drive device 13 can replace manual driving to move the front grandstand 3 into or out of the storage slot 2 of the rear grandstand 1, thereby realizing the folding or unfolding of the grandstand.

[0033] In a further optimized design, a horizontally positioned slider 14 is provided on the triangular plate 93, and a movable rod 15 is rotatably connected to the top side of the connecting rod 7. A limiting groove 16 is provided on the movable rod 15, and the slider 14 is slidably connected in the limiting groove 16.

[0034] The combined use of slider 14 and limiting groove 16 allows the limiting groove 16 to apply a pushing force to slider 14 when the torsion spring loses its resetting effect on triangle 93, thereby achieving the resetting of triangle 93.

[0035] Therefore, the automatic folding grandstand seat of this utility model with the above structure can realize the automatic flipping and folding of the backrests 5 of the entire row of seats, making it convenient to fold up and fold the entire movable grandstand.

[0036] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An automatically retractable grandstand seat, characterized in that: The system includes a rear grandstand (1), a front grandstand (3) which is slidably connected to a storage slot (2) on one side of the rear grandstand (1). The top surface of the front grandstand (3) is provided with evenly distributed seats. The seat cushion (4) of each seat is fixedly connected to the top surface of the front grandstand (3). The backrest (5) of each seat is fixedly connected to one side of a mounting rod (6). At least two connecting rods (7) are vertically fixedly connected to the bottom surface of the mounting rod (6). A protruding post (8) is fixedly connected to the bottom side of the connecting rod (7). Each connecting rod (7) is connected to the top surface of the front grandstand (3) through a connecting assembly (9). The connecting assembly (9) includes a support base (91), a fixing plate (92), a triangular plate (93), and a limiting rod (94). The support base (91) and the fixing plate... (92) are all fixedly connected to the top surface of the front grandstand (3). The support base (91) is rotatably connected to the middle part of the connecting rod (7). The middle part of the triangular plate (93) is rotatably connected to the fixed plate (92) through the first rotating shaft (95). A torsion spring is provided on the first rotating shaft (95). A roller (96) is rotatably connected to the top of the triangular plate (93). The roller (96) is correspondingly set to the protrusion (10) on the bottom surface of the top plate of the rear grandstand (1). A horizontal shaft (97) is fixedly connected to the bottom of the triangular plate (93). The middle part of the limiting rod (94) is rotatably connected to the fixed plate (92). One end of the limiting rod (94) is slidably connected to the through hole on the curved side wall of the horizontal shaft (97). The other end of the limiting rod (94) is correspondingly set to the protrusion (8).

2. The automatically retractable grandstand seating according to claim 1, characterized in that: The support base (91) is provided with a first arc-shaped groove (11) centered on the rotational connection point of the support base (91) and the connecting rod (7), and the protruding post (8) is slidably connected in the first arc-shaped groove (11).

3. The automatically retractable grandstand seat according to claim 1, characterized in that: The fixing plate (92) is provided with a second arc-shaped groove (12), the center of which is located at the rotational connection point between the triangular plate (93) and the fixing plate (92), and the horizontal shaft (97) is slidably connected inside the second arc-shaped groove (12).

4. The automatically retractable grandstand seating according to claim 1, characterized in that: The protruding rib (10) is detachably connected to the bottom surface of the top plate of the rear grandstand (1), and the length direction of the protruding rib (10) is the same as the horizontal movement direction of the roller (96).

5. The automatically retractable grandstand seating according to claim 1, characterized in that: The rear grandstand (1) is connected to the front grandstand (3) via a horizontal drive device (13). The horizontal drive device (13) has two parts and is symmetrically arranged on the two vertical sides of the rear grandstand (1). The extension and retraction direction of the extension and retraction part of the horizontal drive device (13) is the same as the movement direction of the front grandstand (3).

6. The automatically retractable grandstand seat according to claim 1, characterized in that: The triangular plate (93) is provided with a horizontally arranged slider (14), and the top side of the connecting rod (7) is rotatably connected to a movable rod (15). A limit groove (16) is opened on the movable rod (15), and the slider (14) is slidably connected in the limit groove (16).

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