Front-inserted storage hidden type writing board popping and overturning mechanism of auditorium chair

Abstract

The utility model discloses an auditorium chair front-inserted storage hidden type tablet pop-up turnover mechanism which is characterized in that a rebounding device is mounted on one side of a support, a shaft sleeve is arranged on the support and is cylindrical, a limiting notch is formed in the rear end of the shaft sleeve, and a limiting block is fixedly mounted at the rear end of a central shaft through a screw; the rear end of the center shaft is limited at the position of a limiting notch in the rear end of the shaft sleeve through a limiting block, the center shaft can move in a front-back limiting mode and can be connected in a 90-degree rotating mode, a round hole, a containing limiting groove and a rotating limiting groove are formed in the front end of the center shaft, and the round hole in the front end of the center shaft is rotatably connected with a mounting plate through a bolt. The limiting nail is limited to rotate between the containing limiting groove and the rotating limiting groove in the front end of the center shaft, so that the rotatable angle of the mounting plate is limited to be 180 degrees. According to the popping turnover mechanism, the writing board is completely hidden in the armrest of the auditorium chair, the appearance is simple and attractive, the use is convenient and fast, the storage operation is simple, and the writing board is accurately positioned by multiple limiting mechanisms.

Description

Technical Field

[0001] The utility model relates to the field of seats, in particular to a pop-up flipping mechanism for a front-inserted storage and concealed writing board for an auditorium chair. Background Art

[0002] Auditorium chairs are special-purpose chairs that are usually used in large gathering places, such as auditoriums, conference halls, theaters, studios, etc. The design concept of this chair is to provide comfortable seats to the audience so that they can enjoy a better experience during performances or events. Most of the auditorium chairs are composed of five parts: seat, backrest, armrest, standing leg and writing board. As a practical seat, the accessories and facilities of the auditorium chair are also very important. Good accessories and facilities will also increase people's comfort during use. The writing board is an indispensable component of the accessories and facilities of the auditorium chair. It is usually a flat board installed on the side or armrest of the seat. The writing board is an accessory designed for seats used for meetings or lectures. It is usually used in occasions such as learning, work or meetings. It is convenient for recording, taking notes or drawing during meetings or classes, as well as placing notebooks, files, books, writing tools, etc. The writing board effectively improves the efficiency and effectiveness of meetings and lectures. Users can easily record important information at any time to avoid missing or forgetting key details. In addition, the writing board can also promote effective communication and discussion, making meetings and lectures more interactive and participatory.

[0003] At present, there are two types of writing boards: surface-mounted and hidden. Hidden writing boards are also generally called front-mounted writing boards. The folding and folding device of the writing board is generally a metal structure. The front writing board can be hidden in the armrest or on the side of the armrest after being folded. In order to save space, most auditoriums choose to install hidden auditorium chairs. The writing boards mostly adopt a foldable structure. When not in use, they can be folded up without taking up space to facilitate wider aisles. They are particularly suitable for auditoriums or theaters where writing boards are not often used. However, when using the writing board hidden in the armrest, the armrest needs to be opened and then opened for use, which is inconvenient to use; while the writing board hidden on the side of the armrest is more convenient than the writing board hidden in the armrest, but because the writing board cannot be completely hidden and stored, the structure is exposed, and it is not as beautiful as the writing board hidden in the armrest. Summary of the invention

[0004] The purpose of the utility model is to provide a pop-up and flip mechanism for a hidden writing board that can be inserted and stored in front of an auditorium chair in order to address the defects and shortcomings of the prior art. The pop-up and flip mechanism is completely stored and hidden in the armrest, has a beautiful appearance, is integrated with the armrest and is not obtrusive, is easy to use when popped up, and has multiple limit mechanisms that are stable and reliable.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pop-up and flipping mechanism for a hidden writing board inserted in front of an auditorium chair, comprising a rebounder, a bracket, a shaft sleeve, a limit block, a central axis, a mounting plate, and a writing board, wherein the rebounder is mounted on one side of the bracket, the bracket is provided with a shaft sleeve, the shaft sleeve is cylindrical, and a limit notch is opened at its rear end, the limit block is fixed to the rear end of the central shaft by a screw, the rear end of the central shaft is limited to the limit notch at the rear end of the shaft sleeve by the limit block, and can be limited to move forward and backward, and can be rotatably connected by 90 degrees, the front end of the central shaft is provided with a circular hole, a storage limit groove and a rotation limit groove, the front end circular hole of the central shaft is rotatably connected to the mounting plate by a bolt, and a limit nail is also provided on the mounting plate, the limit nail is limited to rotate between the storage limit groove and the rotation limit groove at the front end of the central shaft, so that the rotatable angle of the mounting plate is limited to 180 degrees, the mounting plate is installed below the writing board, and a rebound fulcrum is provided on the writing board.

[0006] After adopting the above structure, the pop-up flip mechanism of the utility model completely hides the writing board in the armrest of the auditorium chair. It has a simple and beautiful appearance, is convenient and quick to pop up and use, does not need to lift the armrest board and then open it for use, has simple storage operation, and multiple limit mechanisms accurately position the writing board. When in use, first press the writing board stored at the front end of the armrest, and the rebound fulcrum on the writing board squeezes the rebounder installed on one side of the bracket. Since the rear end of the central axis is limited to the rear end of the sleeve and can move forward and backward, the rebounder can push the writing board out, and then continue to pull the writing board out; since the front end round hole of the central axis is rotatably connected to the mounting plate through bolts, and the mounting plate is provided with a limit pin, when the writing board rotates, the limit pin is limited to rotate between the storage limit slot and the rotation limit slot at the front end of the central axis, that is, the limit pin can rotate along the semicircle of the front end of the central axis, and the writing board installed on the mounting plate can be rotated 180 degrees upward; finally, the writing board is flipped 90 degrees in the horizontal direction, and the central axis is driven to rotate at the same time. Since the limit block limits the rear end of the central axis to only rotate 90 degrees in the limit notch at the rear end of the sleeve, the writing board will not continue to flip after it is in a horizontal state. When stored, the opposite is true.

[0007] Furthermore, the inner wall and both ends of the shaft sleeve are respectively sleeved with a silencer front shaft sleeve and a silencer rear shaft sleeve.

[0008] Since the shaft sleeve and the center shaft are both made of metal, after adopting the above structure, the utility model can prevent the center shaft from making noise due to friction when rotating or moving in the shaft sleeve by sleeve-connecting sound-absorbing materials on the inner wall and both ends of the shaft sleeve, and at the same time avoid wear and tear, thereby playing an anti-wear and sound-absorbing role.

[0009] Furthermore, a damping plate is provided at the connection point between the front end of the central shaft and the bolt.

[0010] After adopting the above structure, the utility model arranges a damping plate at the connection between the front end of the central shaft and the bolt. The damping material has excellent vibration and noise reduction performance, has no corrosive effect on metal, plastic, rubber and other materials, can reduce the vibration and noise generated by the central shaft during rotation, and can also avoid wear caused by friction between metal parts.

[0011] Furthermore, a shaft sleeve receiving opening is also provided on the mounting plate.

[0012] Since the diameter of the sleeve is larger than the diameter of the central axis, after adopting the above structure, when the writing board of the utility model is stored in the armrest of the auditorium chair, the writing board drives the mounting plate to rotate together, and when the mounting plate rotates to contact with the sleeve, the sleeve can be clamped into the sleeve storage opening, and the mounting plate will not be squeezed after the storage is completed, and the writing board will not move or rotate out automatically after being stored.

[0013] Furthermore, a fusion panel is also provided at the front end of the central axis, and the fusion panel matches the shape and size of the fusion opening of the writing board and forms the front end panel of the armrest of the auditorium chair after being stored.

[0014] After adopting the above structure, the utility model perfectly integrates the writing board and the armrest of the auditorium chair, which is not abrupt and has a delicate, beautiful and practical appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is an exploded stereoscopic schematic diagram of a specific implementation method of the utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of a specific embodiment of the utility model in use;

[0018] Figure 3 It is a three-dimensional schematic diagram of the utility model in a specific embodiment of the utility model in an assembled use state.

[0019] Description of reference numerals:

[0020] 1. Rebounder;

[0021] 2. Bracket;

[0022] 3. Bushing;

[0023] 4. Limit block;

[0024] 5. Central axis (51, storage limit slot; 52, rotation limit slot; 53, fusion panel);

[0025] 6. Bolts;

[0026] 7. Mounting plate (71, limit pin; 72, shaft sleeve receiving opening);

[0027] 8. Writing board; (81. Rebound fulcrum; 82. Fusion mouth);

[0028] 9. Rear bushing;

[0029] 10. Front bushing;

[0030] 11. Damping plate. DETAILED DESCRIPTION

[0031] The utility model will be further described below in conjunction with the accompanying drawings.

[0032] See also Figure 1~Figure 3 As shown, the technical solution adopted in this specific implementation is:

[0033] A pop-up flip mechanism for a hidden writing board inserted and stored in front of an auditorium chair comprises a rebounder 1, a bracket 2, a shaft sleeve 3, a limit block 4, a central shaft 5, a mounting plate 7, and a writing board 8. The rebounder 1 is mounted on one side of the bracket 2. The bracket 2 is provided with a shaft sleeve 3. The shaft sleeve 3 is cylindrical and has a limit notch at its rear end. The limit block 4 is fixed to the rear end of the central shaft 5 by screws. The rear end of the central shaft 5 is limited to the limit notch at the rear end of the shaft sleeve 3 by the limit block 4, and can be moved forward and backward. 90-degree rotation connection, the front end of the central axis 5 has a round hole, a storage limit groove 51 and a rotation limit groove 52, the front end round hole of the central axis 5 is rotatably connected to the mounting plate 7 through a bolt 6, and the mounting plate 7 is also provided with a limit nail 71, the limit nail 71 is limited to rotate between the storage limit groove 51 and the rotation limit groove 52 at the front end of the central axis 5, so that the rotatable angle of the mounting plate 7 is limited to 180 degrees, the mounting plate 7 is installed below the writing board 8, and the writing board 8 is provided with a rebound fulcrum 81. The pop-up flip mechanism of this specific embodiment completely hides the writing board 8 in the armrest of the auditorium chair, with a simple and beautiful appearance, convenient and quick use, no need to lift the armrest board and then open it for use, simple storage operation, and multiple limit mechanisms accurately position the writing board 8.

[0034] When the present specific embodiment is used, the writing board 8 stored in the front end of the armrest is first pressed, and the rebound fulcrum 81 on the writing board 8 squeezes the rebounder 1 installed on one side of the bracket 2. Since the rear end of the central shaft 5 is limited to the rear end of the sleeve 3 and can move forward and backward, the rebounder 1 can push the writing board 8 out, and then continue to pull the writing board 8 out after being pushed out; since the front end round hole of the central shaft 5 is rotatably connected with the mounting plate 7 through the bolt 6, and the mounting plate 7 is provided with a limiting nail 71, when the writing board rotates, the limiting nail 71 is limited to rotate between the storage limiting groove 51 and the rotation limiting groove 52 at the front end of the central shaft 5, that is, the limiting nail 71 can rotate along the semicircle of the front end of the central shaft 5, and the writing board 8 installed on the mounting plate 7 can be rotated upward by 180 degrees; finally, the writing board 8 is flipped 90 degrees in the horizontal direction, and the central shaft 5 is driven to rotate at the same time. Since the limiting block 4 limits the rear end of the central shaft 5 to only rotate 90 degrees in the limiting notch at the rear end of the sleeve 3, the writing board 8 will not continue to flip after it is in a horizontal state. When storing, the opposite is true.

[0035] In this specific embodiment, the inner wall and both ends of the sleeve 3 are respectively sleeved with a silencer front sleeve 10 and a silencer rear sleeve 9. Since the sleeve 3 and the central shaft 5 are made of metal, this specific embodiment can prevent the central shaft 5 from making noise due to friction when rotating or moving in the sleeve 3 by sleeve-fitting silencer materials on the inner wall and both ends of the sleeve 3, and at the same time avoids wear and tear, thereby playing the role of anti-wear and silencer.

[0036] In this specific embodiment, a damping plate 11 is provided at the connection between the front end of the central shaft 5 and the bolt 6. By providing the damping plate 11 at the connection between the front end of the central shaft 5 and the bolt 6, the damping material has excellent vibration reduction and noise reduction performance, has no corrosive effect on metals, plastics, rubber and other materials, can reduce the vibration and noise generated by the central shaft 5 during rotation, and can also avoid wear caused by friction between metal parts.

[0037] In this specific embodiment, the mounting plate 7 is further provided with a sleeve receiving opening 72. Since the diameter of the sleeve 3 in this specific embodiment is larger than the diameter of the central shaft 5, when the writing board 8 is stored in the armrest of the auditorium chair, the writing board 8 drives the mounting plate 7 to rotate together, and when the mounting plate 7 rotates to contact the sleeve 3, the sleeve 3 can be inserted into the sleeve receiving opening 72, and the mounting plate 7 will not be squeezed after the storage is completed, and the writing board 8 will not move or rotate out automatically after being stored.

[0038] In this specific embodiment, a fusion panel 53 is also provided at the front end of the central axis 5. The fusion panel 53 matches the shape and size of the fusion opening 82 of the writing board 8 and forms the front panel of the auditorium chair armrest after being stored. This specific implementation makes the writing board 8 and the auditorium chair armrest perfectly integrated, not abrupt, and has a delicate, beautiful and practical appearance.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pop-up flip mechanism for storing a hidden writing board in front of an auditorium chair, characterized in that: The invention comprises a rebounder (1), a bracket (2), a sleeve (3), a limit block (4), a central shaft (5), a mounting plate (7), and a writing board (8), wherein the rebounder (1) is mounted on one side of the bracket (2), the bracket (2) is provided with a sleeve (3), the sleeve (3) is cylindrical, and a limit notch is opened at the rear end thereof, the limit block (4) is fixed to the rear end of the central shaft (5) by screws, the rear end of the central shaft (5) is limited to the limit notch at the rear end of the sleeve (3) by the limit block (4), and the central shaft (5) can be limitedly moved forward and backward, and can be rotated 90 degrees. The front end of the central shaft (5) is provided with a circular hole, a storage limit groove (51) and a rotation limit groove (52); the front end circular hole of the central shaft (5) is rotatably connected to the mounting plate (7) through a bolt (6); the mounting plate (7) is further provided with a limit pin (71); the limit pin (71) limits the rotation between the storage limit groove (51) and the rotation limit groove (52) at the front end of the central shaft (5), so that the rotatable angle of the mounting plate (7) is limited to 180 degrees; the mounting plate (7) is installed below a writing board (8); and a rebound fulcrum (81) is provided on the writing board (8).

2. The pop-up flip mechanism for storing a hidden writing board in front of an auditorium chair according to claim 1 is characterized in that: The inner wall and both ends of the shaft sleeve (3) are respectively sleeved with a silencer front shaft sleeve (10) and a silencer rear shaft sleeve (9).

3. The pop-up and flip mechanism for storing a hidden writing board in front of an auditorium chair according to claim 1 is characterized in that: A damping sheet (11) is provided at the connection between the front end of the central shaft (5) and the bolt (6).

4. The pop-up and flip mechanism for storing a hidden writing board in front of an auditorium chair according to claim 1 is characterized in that: The mounting plate (7) is also provided with a shaft sleeve receiving opening (72).

5. The pop-up and flip mechanism for storing a hidden writing board in front of an auditorium chair according to claim 1 is characterized in that: The front end of the central axis (5) is also provided with a fusion panel (53), the fusion panel (53) matches the shape and size of the fusion opening (82) of the writing board (8), and forms the front panel of the auditorium chair armrest after being stored.

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