Seat table board rotation locking mechanism

Abstract

The utility model relates to a kind of seat small table board rotation locking mechanism, including rotating arm, base, rotation locking structure, support arm and table board;Rotating arm bottom end is set in base by rotating damper, rotating arm top end is connected with support arm by pivot, and the top surface of support arm is equipped with table board;The bottom surface of rotating arm is connected with the driving end of driving arm by pivot, and the other end of driving arm is free end;The driving end of driving arm is cam structure;Rotation locking structure includes limiting shaft, compression spring, shaft sleeve and two limit blocks;After being extruded to between two limit blocks in limiting shaft bottom end, external force drives rotating arm to rotate, then rotating arm drives support arm, table board can only rotate between two limit blocks, realize the safe and stable adjustment of table board angle, effectively avoid the situation that table board tilting angle is too large due to the excessive adjustment of table board, ensure the safety and stability of table board during adjustment in use process.

Description

Technical Field

[0001] This utility model relates to a locking mechanism, and more particularly to a rotating locking mechanism for a small table on a chair. Background Technology

[0002] Existing high-end business vehicles typically feature concealed tray tables in the armrests of their airline-style seats. Passengers can easily pull the tray table out and open it during their journey. During opening, the tray table rotates via a damper with different positions to accommodate varying backrest angles. Once open, the tray table can be suspended at any position (0°–180°) via the damper, meeting the needs of passengers in different scenarios. For example, it can be used to place mobile phones, tablets, laptops, books, etc., at different angles, or even as a small table for meals during the journey. However, if the tray table needs to be tilted at different angles during use, the lack of a limiting structure can easily lead to excessive tilting, potentially causing items on the tray table to fall due to the excessive tilt. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, this utility model proposes a rotating locking mechanism for a small table on a chair.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a seat table rotation locking mechanism, including a rotating arm, a base, a rotation locking structure, a support arm and a table; The bottom end of the rotating arm is set in the base through a rotation damper, and the top end of the rotating arm is connected to a support arm through a rotating shaft. The top surface of the support arm is provided with a table. The bottom surface of the rotating arm is connected to the driving end of the driving arm via a rotating shaft. The other end of the driving arm is a free end, which moves back and forth along the bottom surface of the support arm. The driving end of the driving arm is a cam structure. The rotary locking structure includes a limiting shaft, a compression spring, a bushing, and two limiting blocks. The limiting shaft is located at the shaft head and moves up and down along the bushing. One end of the compression spring is located on the outer ring of the limiting shaft inside the bushing. The other end of the compression spring is fixed to the bottom end inside the bushing. The top end of the limiting shaft extends out of the bushing and is located at the lower part of the drive end. The bottom end of the limiting shaft extends out of the bushing and is located at the upper part of the two limiting blocks. Both of the limiting blocks are mounted on the base, and there is a gap between the two limiting blocks. After the limiting shaft moves downward, the bottom end of the limiting shaft moves between the two limiting blocks in a matching manner.

[0005] In a preferred embodiment of the present invention, the bottom surface of the support arm is provided with a sliding groove, and the free end of the drive arm moves back and forth along the sliding groove.

[0006] In a preferred embodiment of the present invention, the outer contour of the top of the base is curved, and the two limiting blocks are both disposed on the top of the base, with the included angle between the two limiting blocks being 30-50°.

[0007] In a preferred embodiment of the present invention, the limiting shaft includes a top limiting post and a bottom limiting post, the diameter of the top limiting post is larger than the diameter of the bottom limiting post, and the top end of the compression spring is fixedly disposed at the bottom end of the top limiting post.

[0008] In a preferred embodiment of the present invention, a limiting groove is provided at the top of the slide groove, and a limiting protrusion is provided at the free end of the drive arm. When the support arm drives the table to rotate into position along the rotating arm, the limiting protrusion of the drive arm is matched and locked into the limiting groove.

[0009] The beneficial effects of this utility model are as follows: When the support arm rotates along the rotating arm via the pivot, the free end of the drive arm moves synchronously along the bottom surface of the support arm. At the same time, the drive end of the support arm rotates synchronously along the rotating arm via the pivot. Since the drive end of the drive arm is a cam structure, during the rotation of the drive end of the drive arm, it contacts the top of the limiting shaft located at the lower part of the drive end of the drive arm, pressing the limiting shaft downward. During the downward movement of the limiting shaft, after the bottom end of the limiting shaft is pressed between the two limiting blocks, the external force drives the rotating arm to rotate. Thus, the rotating arm drives the support arm and the table to rotate only between the two limiting blocks, realizing the safe and stable adjustment of the table angle. This effectively avoids the situation where excessive adjustment of the table causes the table to tilt too much and the items on the table to fall off, ensuring the safety and stability of the table adjustment during use. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the unused structure of the tabletop of this utility model; Figure 2 This is a structural diagram of the tabletop in use according to this utility model; Figure 3 This is a schematic diagram of the tabletop rotation locking structure of this utility model; Figure 4 This is a schematic diagram of the tabletop of this utility model rotating through a rotary locking structure; Figure 5 This is a schematic diagram of the limiting shaft structure of this utility model; Figure 6 This is a schematic diagram showing the limiting protrusion of this utility model located within the limiting groove; Figure 7 yes Figure 6 Enlarged view of point A in the middle; In the diagram: 1. Rotating arm; 2. Base; 3. Rotating locking structure; 301. Limiting shaft; 3011. Top limiting post; 3012. Bottom limiting post; 302. Compression spring; 303. Limiting block; 304. Bushing; 4. Support arm; 401. Slide groove; 402. Limiting groove; 5. Table; 6. Drive arm; 601. Drive end; 602. Free end; 603. Limiting protrusion. Detailed Implementation

[0011] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0012] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0013] like Figures 1 to 7 The present invention relates to a rotating locking mechanism for a small seat table, comprising a rotating arm 1, a base 2, a rotating locking structure 3, a support arm 4, and a table 5; The bottom end of the rotating arm 1 is set in the base 2 through a rotation damper, and the top end of the rotating arm 1 is connected to a support arm 4 through a rotating shaft. The top surface of the support arm 4 is provided with a table 5. The bottom surface of the rotating arm 1 is connected to the driving end 601 of the driving arm 6 via a rotating shaft. The other end of the driving arm 6 is a free end 602, which moves back and forth along the bottom surface of the support arm 4. The driving end 601 of the driving arm 6 is a cam structure 603. The rotary locking structure 3 includes a limiting shaft 301, a compression spring 302, a bushing 304, and two limiting blocks 303. The limiting shaft 301 is disposed inside the shaft head 304 and moves up and down along the bushing 304. One end of the compression spring is provided on the outer ring of the limiting shaft 301 located inside the bushing 304. The other end of the compression spring 302 is fixed to the bottom end of the bushing 304. The top end of the limiting shaft 301 extends out of the bushing 304 and is located at the lower part of the drive end 601. The bottom end of the limiting shaft 301 extends out of the bushing 304 and is located at the upper part between the two limiting blocks 303. Both of the limiting blocks 303 are mounted on the base 2, and there is a gap between the two limiting blocks 303. After the limiting shaft 301 moves downward, the bottom end of the limiting shaft 301 moves between the two limiting blocks 303 in a matching manner.

[0014] When the small table is needed, it is rotated to a suitable angle via the rotating arm 1 and the rotary damper. At this point, the rotating arm 1, the support arm 4, and the table 5 are all in a vertical position. Then, the support arm 4 is rotated along the rotating arm 1 via a pivot, causing the table 5 on the top surface to form an angle with the rotating arm 1. When the table 5 is perpendicular to the rotating arm 1, it is in a horizontal position, and passengers can use it. When it is necessary to fine-tune the angle of the table to make it tilted for supporting electronic devices, books, or other items, the rotation of the support arm 4 can be limited by the rotating locking structure 3, ensuring safe and stable rotation of the table 5 via the rotating arm and the rotary damper. Specifically, when the support arm 4 rotates along the rotating arm 1 via the pivot, the free end 602 of the drive arm 6 moves synchronously along the bottom surface of the support arm, and at the same time, the drive end 601 of the drive arm 6 rotates synchronously along the rotating arm 1 via the pivot. Since the drive end 601 of the drive arm 6 is a cam structure, during the rotation of the drive end 601 of the drive arm 6, it contacts the top end of the limiting shaft 301 located at the lower part of the drive end 601 of the drive arm 6, pressing the limiting shaft 301 downward. Since the limiting shaft 301 is provided with a compression spring 302 on the outer wall inside the bushing 304, during the process of the limiting shaft 301 being pressed downward, the compression spring 302 is compressed by the limiting of the bushing 304. After the bottom end of the limiting shaft 301 is squeezed between the two limiting blocks 303, the external force drives the rotating arm 1 to rotate. The rotating arm 1 then drives the support arm 5 and the table 6 to rotate only between the two limiting blocks 303, realizing the safe and stable adjustment of the table angle. This effectively avoids the situation where the table tilts too much due to excessive adjustment of the table 5, causing items to fall off the table, and ensures the safety and stability of the table 5 during use.

[0015] In a preferred embodiment, the bottom surface of the support arm 4 in this application is provided with a groove 401, and the free end 602 of the drive arm 6 moves back and forth along the groove 401. The groove 401 helps to improve the stability and safety of the free end 601 of the drive arm 6 moving along the support arm 4.

[0016] In a preferred embodiment, the top end of the slide groove 401 is provided with a limiting groove 402, and the free end 602 of the drive arm 6 is provided with a limiting protrusion 603. When the support arm 4 drives the table to rotate into position along the rotating arm 1, the limiting protrusion 603 of the drive arm 6 is matched and engaged in the limiting groove 402. That is, by limiting the limiting protrusion 603 through the limiting groove 402, the stability of the position of the drive arm 6 between the bottom surfaces of the support arm 4 is achieved, thus achieving the stability of the support of the drive arm 6 on the table.

[0017] In a preferred embodiment, the outer contour of the top of the base 2 in this application is curved, and the two limiting blocks 303 are both set on the top of the base 2, which facilitates the sliding of the limiting shaft 301 between the two limiting blocks 303, ensuring the safety and stability of the rotation of the rotating arm 1 and the stability of the angle adjustment of the table 5. The included angle between the two limiting blocks 303 is 30-50°, which effectively avoids the situation where the table adjustment angle is too large and the items placed on the table fall due to excessive tilt.

[0018] The limiting shaft 301 in this application includes a top limiting post 3011 and a bottom limiting post 3012. The diameter of the top limiting post 3011 is larger than the diameter of the bottom limiting post 3012, and the compression spring 302 is sleeved on the bottom limiting post 3012, with the top end of the compression spring 302 fixedly disposed at the bottom end of the top limiting post 3011. The top limiting post 3011 fixes the compression spring 302 between the top limiting post and the bottom end of the bushing. When the limiting shaft 301 is compressed, the top limiting shaft 3011 moves downward, compressing the compression spring disposed between the top limiting post and the bottom end of the bushing. When the tabletop 5 is not in use and is folded into the armrest, the support arm 4 can be rotated. The support arm 4 rotates along the rotating arm 1 via a pivot, causing the tabletop 5 to be in a vertical position relative to the rotating arm 1. Since the free end 602 of the drive arm 6 moves back and forth along the slide groove 401 of the support arm 4, and the drive end 601 of the drive arm 6 is connected to the rotating arm 1 via a pivot, the drive end 601 of the drive arm 6 also rotates via the pivot as the support arm 4 rotates along the rotating arm 1. Furthermore, since the drive end 601 of the drive arm 6 is a cam... In structure 603, when the support arm 4 rotates to a vertical position with the rotating arm 1, the pressure of the drive end 601 on the limiting shaft 301 is released, and the limiting shaft 301 is reset. That is, the top limiting shaft 3011 and the bottom limiting shaft 3012 are reset under the action of the compression spring 302, so that the bottom end of the limiting shaft 301 moves upward and is located in the upper part between the two limiting blocks 303. At this time, the rotation locking structure is unlocked, and the tabletop rotates at any angle along the rotation damper under the action of the support arm and the rotating arm, so as to realize the tabletop being retracted into the armrest.

[0019] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0020] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A rotating locking mechanism for a seat table, characterized in that, It includes a rotating arm (1), a base (2), a rotating locking structure (3), a support arm (4), and a table (5); The bottom end of the rotating arm (1) is set in the base (2) through a rotation damper, and the top end of the rotating arm (1) is connected to a support arm (4) through a rotating shaft. The top surface of the support arm (4) is provided with a table (5). The bottom surface of the rotating arm (1) is connected to the driving end (601) of the driving arm (6) via a rotating shaft. The other end of the driving arm (6) is a free end (602), which moves back and forth along the bottom surface of the support arm (4). The driving end (601) of the driving arm (6) is a cam structure (603). The rotary locking structure (3) includes a limiting shaft (301), a compression spring (302), a bushing (304), and two limiting blocks (303). The limiting shaft (301) is located on the shaft head (304) and moves up and down along the bushing (304). The outer ring of the limiting shaft (301) located inside the bushing (304) is provided with one end of the compression spring. The other end of the compression spring (302) is fixed to the bottom end of the bushing (304). The top end of the limiting shaft (301) extends out of the bushing (304) and is located at the lower part of the drive end (601). The bottom end of the limiting shaft (301) extends out of the bushing (304) and is located at the upper part between the two limiting blocks (303). Both of the limiting blocks (303) are set on the base (2), and there is a gap between the two limiting blocks (303). After the limiting shaft (301) moves downward, the bottom end of the limiting shaft (301) moves between the two limiting blocks (303).

2. The seat table rotation locking mechanism according to claim 1, characterized in that, The bottom surface of the support arm (4) is provided with a sliding groove (401), and the free end (602) of the drive arm (6) moves back and forth along the sliding groove (401).

3. The seat table rotation locking mechanism according to claim 1, characterized in that, The outer contour of the top of the base (2) is curved, and the two limiting blocks (303) are both set on the top of the base (2), with an included angle of 30-50° between the two limiting blocks (303).

4. The seat table rotation locking mechanism according to claim 1, characterized in that, The limiting shaft (301) includes a top limiting post (3011) and a bottom limiting post (3012). The diameter of the top limiting post (3011) is larger than the diameter of the bottom limiting post (3012), and the top end of the compression spring (302) is fixedly disposed at the bottom end of the top limiting post (3011).

5. The seat table rotation locking mechanism according to claim 2, characterized in that, The top end of the slide groove (401) is provided with a limiting groove (402), and the free end (602) of the drive arm (6) is provided with a limiting protrusion (603). When the support arm (4) drives the table to rotate into position along the rotating arm (1), the limiting protrusion (603) of the drive arm (6) is matched and inserted into the limiting groove (402).

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