Damping type escape writing board for seat

Abstract

The utility model provides a damping type seat escape writing board, which comprises a fixed support, a rotary support and a writing board, the rotary support is rotatably mounted in the fixed support, one end of the writing board is rotatably connected with the rotary support, a gas spring is mounted between the fixed support and the rotary support, the gas spring is arranged in the fixed support, and the fixed support is fixedly connected with the rotary support. The gas spring is used for generating a damping effect when the writing board is stored, so that the writing board is slowly stored in a storage cavity of an external seat; the gas spring comprises a damping cylinder body with the end hinged to the fixed support and a telescopic rod installed in the damping cylinder body in a sliding mode, and the end, away from the damping cylinder body, of the telescopic rod is hinged to the rotary support. According to the damping type escape writing board for the seat, the defects that an existing escape writing board is too high in falling speed and large in noise are overcome.

Description

Technical Field

[0001] The utility model relates to the field of writing boards, in particular to an escape writing board for a damping seat. Background Art

[0002] In modern transportation (such as airplanes, trains, and long-distance buses) and in public spaces (such as theaters, auditoriums, lecture halls, libraries, and conference rooms), seat-mounted writing boards provide convenient writing and workspaces. For safety, escape boards have been designed. These boards can be stored in the armrests, eliminating the need to move or fold them away, allowing users to simply stand up and use them.

[0003] For example, patent number CN202723201U discloses a chair with a tablet. When a person needs to stand up and put away the tablet, their thighs touch the tablet as they stand up, causing the tablet to rotate the fixed shaft, which in turn causes the cylindrical pin to rotate, causing it to rotate into a 90° pin slot. Simultaneously, the tablet rotates 90°. After the limit block disengages the limit slot, the tablet begins to rotate downward through the support under the action of gravity and is stored in the armrest cavity. In this structure, when the tablet is stored, it rotates under the action of gravity and is stored in the armrest cavity, causing it to fall too quickly and produce a loud banging sound, resulting in a poor user experience. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] The problem to be solved by the utility model is to provide a damping type escape writing board for a seat, so as to overcome the defects of the existing escape writing board in that the falling speed is too fast and the noise is relatively large.

[0006] (2) Technical solution

[0007] In order to solve the technical problem, the utility model provides an escape writing board for a damped seat, comprising a fixed bracket, a rotating support rotatably mounted in the fixed bracket, and a writing board with one end rotatably connected to the rotating support. A gas spring is installed between the fixed bracket and the rotating support, and the gas spring is placed in the fixed bracket. The gas spring is used to generate a damping effect when the writing board is stored, so that it is slowly stored in the storage cavity of the external seat; the gas spring comprises a damping cylinder body whose end is hinged to the fixed bracket and a telescopic rod slidably mounted in the damping cylinder body, and the end of the telescopic rod away from the damping cylinder body is hinged to the rotating support.

[0008] In some embodiments, a hinge seat is installed at one end of the telescopic rod, and hinge plates are symmetrically and spaced apart on the rotating support. The hinge seat is hinged between the two hinge plates through a first hinge axis; a connecting ear is provided at one end of the damping cylinder body, and the connecting ear is hinged to the fixed bracket through a second hinge axis.

[0009] In some embodiments, a first arc-shaped slot and a second arc-shaped slot are provided on one side or both sides of the fixed bracket, and a pin that can be engaged with the first arc-shaped slot and the second arc-shaped slot is provided on the rotating support.

[0010] In some embodiments, a tablet shaft is fixed to one side of the tablet, one end of the tablet shaft is inserted into the rotating support, and a torsion spring is installed between the tablet shaft and the rotating support.

[0011] In some embodiments, a locking piece is installed at one end of the tablet shaft, and the torsion spring is sleeved on the tablet shaft; one end of the torsion spring is inserted into the rotating support, and the other end is inserted into the locking piece.

[0012] In some embodiments, a limiting end cover is provided at one end of the rotating support, two first limiting blocks are spaced apart on the limiting end cover, and a second limiting block that can be symmetrically arranged on the rotating shaft of the writing board and can be pressed against the first limiting block for limiting position is provided.

[0013] In some embodiments, an elastic bead is installed on one end of the first limiting block facing the tablet shaft, and a limiting slot that can be engaged with the elastic bead is provided on the tablet shaft.

[0014] In some embodiments, a limiting groove is provided on one or both sides of the fixed bracket, and a limiting plate corresponding to the limiting groove is provided on the writing board shaft. A limiting flat blocking surface is provided on one side of the limiting plate, and an arc-shaped avoidance surface is provided on the other side.

[0015] In some embodiments, the tablet shaft is provided with a convex plate at the end position of the rotating support, and the second limiting block, the limiting slot and the limiting plate are all provided on the convex plate.

[0016] In some embodiments, the rotating support is hinged in the fixed bracket via a third hinge axis.

[0017] (3) Beneficial effects

[0018] The utility model provides a damping type seat escape writing board, which is additionally provided with a gas spring, one end of the gas spring being hinged to a fixed bracket, and the other end of the gas spring being hinged to a rotating support. When the writing board is stored, the writing board rotates downward through the rotating support under the action of gravity and the gas spring. During the process of rotating and falling, the gas spring produces a damping effect, thereby causing the writing board to slowly fall into the storage cavity of the seat, reducing the falling speed of the writing board, and also preventing collision and abnormal noise. The utility model has a better use effect and overcomes the defects of the existing escape writing board in that the falling speed is too fast and the noise is relatively large. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 This is a three-dimensional diagram of the utility model of a damping seat escape writing board after it is fully unfolded;

[0021] Figure 2 This is a three-dimensional diagram of another perspective of the utility model of an escape writing board for a damping seat after it is fully unfolded;

[0022] Figure 3 This is an exploded view of an escape writing board for a damping seat according to the utility model;

[0023] Figure 4 This is a three-dimensional diagram of the connection between the rotary support of the escape tablet for a damping seat and the gas spring of the utility model;

[0024] Figure 5 This is a schematic structural diagram of a damping type seat escape tablet rotation support and a tablet rotation shaft connected to the utility model;

[0025] Figure 6 This is a three-dimensional diagram of a rotary support for an escape writing board used in a damping seat according to the utility model;

[0026] Figure 7 This is a three-dimensional diagram of the rotating shaft of the writing board in the utility model of a damping type seat escape writing board;

[0027] Figure 8 This is a three-dimensional diagram of a fixing bracket for an escape writing board for a damping seat according to the utility model;

[0028] Figure 9 This is a three-dimensional diagram of a damping seat escape writing board after it is half unfolded;

[0029] Figure 10 This is a three-dimensional diagram of the utility model after the escape writing board for the damping seat is stored;

[0030] The names of the components corresponding to the various reference numerals in the figure are: 1. Fixed bracket; 101. First arc-shaped slot; 102. Second arc-shaped slot; 103. Limiting slot; 2. Rotating support; 21. Limiting end cover; 22. Third hinge axis; 201. Hinge plate; 202. Pin; 211. First limiting block; 212. Elastic card bead; 3. Writing board; 31. Writing board rotating shaft; 32. Locking member; 311. Second limiting block; 312. Limiting slot; 313. Limiting plate; 314. Limiting flat block surface; 315. Arc-shaped avoidance surface; 316. Protruding plate; 4. Gas spring; 41. Damping cylinder; 42. Telescopic rod; 43. Articulated seat; 44. First hinge axis; 45. Connecting ear; 46. Second hinge axis; 5. Torsion spring. DETAILED DESCRIPTION

[0031] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0037] See Figures 1 to 10 The utility model provides an escape writing board for a damped seat, comprising a fixed bracket 1, a rotating support 2 rotatably mounted in the fixed bracket 1, and a writing board 3 with one end rotatably connected to the rotating support 2. A gas spring 4 is installed between the fixed bracket 1 and the rotating support 2. The rotating support 2 is located at the inner front end of the fixed bracket 1, and the writing board 3 is located at the outer front side of the fixed bracket 1. The fixed bracket 1 is U-shaped and has an accommodating space for accommodating the rotating support 2 and the gas spring 4 formed therein. The fixed bracket 1 is fixed to the outer seat.

[0038] See Figure 3 and Figure 4 The gas spring 4 is placed in the fixed bracket 1 and is located at the rear side of the rotating support 2. The gas spring 4 is used to generate a damping effect when the writing board 3 is stored, so that the writing board 3 is slowly stored in the storage cavity of the external seat. The gas spring 4 includes a damping cylinder 41 whose end is hinged to the fixed bracket 1 and a telescopic rod 42 slidably installed in the damping cylinder 41. The end of the telescopic rod 42 away from the damping cylinder 41 is hinged to the rotating support 2. This structure adds a gas spring, one end of the gas spring is hinged to the fixed bracket, and the other end of the gas spring is hinged to the rotating support. When the writing board is stored, the writing board rotates downward through the rotating support under the action of gravity and the gas spring. During the rotation and falling process, the gas spring generates a damping effect, so that the writing board slowly falls into the storage cavity of the seat, reducing the falling speed of the writing board and not generating any collision or abnormal sound. It is noiseless and has a good use effect.

[0039] In some embodiments, as Figure 3 and Figure 4As shown, a hinged seat 43 is mounted on one end of the telescopic rod 42. Hinge plates 201 are symmetrically and spaced apart on the rotating support 2. The hinged seat 43 is hinged between the two hinged plates 201 via a first hinge axis 44. The hinged plates 201 and the rotating support 2 are integrally formed. A connecting lug 45 is provided at one end of the damping cylinder 41, which is hinged to the fixed support 1 via a second hinge axis 46. This structure utilizes a retractable gas spring, with its ends hinged to the rotating support 2 and fixed support 1, respectively. This ensures that the gas spring generates damping when the writing tablet 3 is lowered for storage (i.e., from a semi-expanded state to a stowed state). This not only does not affect the normal folding and stowage of the writing tablet 3, but also enhances the damping effect.

[0040] In some embodiments, as Figure 1 、 Figure 8 and Figure 10 As shown, a first arc-shaped slot 101 and a second arc-shaped slot 102 are provided on one or both sides of the fixed bracket 1, and a latch 202 that can engage with the first arc-shaped slot 101 and the second arc-shaped slot 102 is provided on the rotating support 2. The first arc-shaped slot 101 and the second arc-shaped slot 102 are provided on both sides of the fixed bracket 1, and the corresponding latch 202 is provided on both sides of the rotating support 2. The first arc-shaped slot 101 and the second arc-shaped slot 102 on the same side are on the same circumference. The first arc-shaped slot 101 and the second arc-shaped slot 102 are both connected to the outside world to facilitate the latch 202 to engage with the first arc-shaped slot 101 or the second arc-shaped slot 102. When in the fully expanded state or the semi-expanded state, the latch 202 is inserted into the first arc-shaped slot 101 to limit the rotating support 2 (such as Figure 1 and Figure 9 When in the storage state, the latch 202 is inserted into the second arc-shaped slot 102 to limit the rotation support 2 (eg Figure 10 ).

[0041] In some embodiments, as Figures 3 to 5 As shown, a tablet shaft 31 is fixed to one side of the tablet 3. One end of the shaft 31 is inserted into the rotating support 2, allowing the tablet shaft 31 to rotate relative to the rotating support 2. A torsion spring 5 is installed between the shaft 31 and the rotating support 2 to reset the tablet shaft 31. A locking member 32 is installed at one end of the shaft 31, located behind the rotating support 2. The torsion spring 5 is mounted on the tablet shaft 31; one end of the torsion spring 5 is inserted into the rotating support 2, and the other end is inserted into the locking member 32. The provision of the torsion spring facilitates the rotation and reset of the tablet 3 from the horizontal position (fully extended position) to the vertical position (half-extended position), making it more convenient to use.

[0042] In some embodiments, as Figure 4 、 Figure 6 and Figure 7 As shown, a limiting end cover 21 is provided at one end of the rotating support 2, and two first limiting blocks 211 are arranged at intervals on the limiting end cover 21. The first limiting blocks 211 are protruding, and the two first limiting blocks 211 are located on the same circumference; a second limiting block 311 is symmetrically provided on the writing board rotation shaft 31, which can be pressed against and limited by the first limiting block 211. The second limiting block 311 is protruding toward the limiting end cover 21, and the second limiting block 311 can rotate between the two first limiting blocks 211. The first limiting block 211 can be pressed against and limited by the second limiting block 311, thereby limiting the writing board 3 when the writing board 3 is in a horizontal state and a vertical state.

[0043] In some embodiments, as Figure 4 、 Figure 6 and Figure 7 As shown, a first stopper 211 is equipped with an elastic bead 212 at one end facing the tablet shaft 31. A stopper slot 312 is provided on the tablet shaft 31, which engages with the elastic bead 212. The stopper slot 312 is located between the two second stoppers 311. The elastic bead 212 is located within a groove in the first stopper 211, with a spring installed between the elastic bead 212 and the first stopper 211. When the tablet 3 is fully extended, the elastic bead 212 engages with the corresponding stopper slot 312.

[0044] In some embodiments, as Figure 7 and Figure 8 As shown, a limiting groove 103 is provided on one or both sides of the fixed bracket 1. In this embodiment, the limiting groove 103 is provided on both sides of the fixed bracket 1. A limiting plate 313 corresponding to the limiting groove 103 is provided on the tablet shaft 31. A limiting flat stop surface 314 is provided on one side of the limiting plate 313, and an arc-shaped avoidance surface 315 is provided on the other side. In this structure, when the tablet 3 is in the fully extended state ( Figure 1 As shown), the limiting flat stop surface 314 of the limiting plate 313 is placed in the limiting groove 103, thereby limiting the writing board 3; the setting of the arc-shaped avoidance surface 315 facilitates the limiting plate 313 to be rotated out of the limiting groove 103, ensuring the feasibility of the structure.

[0045] In some embodiments, as Figure 7 As shown, the tablet shaft 31 is provided with a convex plate 316 at the end position of the rotating support 2 , and the second limiting block 311 , the limiting slot 312 and the limiting plate 313 are all integrally provided on the convex plate 316 .

[0046] In some embodiments, as Figure 2 As shown, the rotating support 2 is hinged in the fixed bracket 1 via the third hinge shaft 22 .

[0047] 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.

[0048] 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 damping seat escape writing board, characterized by: The invention comprises a fixed bracket (1), a rotating support (2) rotatably mounted in the fixed bracket (1), and a writing board (3) with one end rotatably connected to the rotating support (2); a gas spring (4) is mounted between the fixed bracket (1) and the rotating support (2); the gas spring (4) is placed in the fixed bracket (1); the gas spring (4) is used to generate a damping effect when the writing board (3) is stored, so that the writing board (3) is slowly stored in the storage cavity of the external seat; the gas spring (4) comprises a damping cylinder (41) with an end hinged to the fixed bracket (1) and a telescopic rod (42) slidably mounted in the damping cylinder (41); the telescopic rod (42) has one end away from the damping cylinder (41) hinged to the rotating support (2); An articulated seat (43) is installed at one end of the telescopic rod (42), and articulated plates (201) are symmetrically and spaced apart on the rotating support (2). The articulated seat (43) is hinged between the two articulated plates (201) via a first articulated shaft (44). A connecting ear (45) is provided at one end of the damping cylinder (41), and the connecting ear (45) is articulated to the fixed bracket (1) via a second articulated shaft (46).

2. The damping seat escape writing board according to claim 1, characterized in that: A first arc-shaped slot (101) and a second arc-shaped slot (102) are provided on one side or both sides of the fixed bracket (1), and a latch (202) capable of engaging with the first arc-shaped slot (101) and the second arc-shaped slot (102) is provided on the rotating support (2).

3. The damping seat escape writing board according to claim 1, characterized in that: A tablet rotating shaft (31) is fixed to one side of the tablet (3), one end of the tablet rotating shaft (31) is inserted into the rotating support (2), and a torsion spring (5) is installed between the tablet rotating shaft (31) and the rotating support (2).

4. The damping seat escape writing board according to claim 3, characterized in that: A locking piece (32) is installed at one end of the tablet rotating shaft (31), and the torsion spring (5) is sleeved on the tablet rotating shaft (31); one end of the torsion spring (5) is plugged into the rotating support (2), and the other end is plugged into the locking piece (32).

5. The damping seat escape writing board according to claim 3, characterized in that: A limiting end cover (21) is provided at one end of the rotating support (2), two first limiting blocks (211) are spaced apart on the limiting end cover (21), and a second limiting block (311) capable of abutting against the first limiting block (211) for limiting position is symmetrically provided on the tablet rotating shaft (31).

6. The damping seat escape writing board according to claim 5, characterized in that: An elastic card bead (212) is installed on one end of the first limit block (211) facing the tablet rotating shaft (31), and a limit card slot (312) capable of being engaged with the elastic card bead (212) is provided on the tablet rotating shaft (31).

7. The damping seat escape writing board according to claim 6, characterized in that: A limiting groove (103) is provided on one or both sides of the fixed bracket (1); a limiting plate (313) corresponding to the limiting groove (103) is provided on the tablet rotating shaft (31); a limiting flat blocking surface (314) is provided on one side of the limiting plate (313), and an arc-shaped avoidance surface (315) is provided on the other side.

8. The damping seat escape writing board according to claim 7, characterized in that: The tablet rotating shaft (31) is provided with a convex plate (316) at the end position of the rotating support (2), and the second limiting block (311), the limiting slot (312) and the limiting plate (313) are all provided on the convex plate (316).

9. The damping seat escape writing board according to claim 1, characterized in that: The rotating support (2) is hinged in the fixed bracket (1) via a third hinge shaft (22).

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