Angle adjusting mechanism

Abstract

The utility model discloses an angle adjusting mechanism, which relates to the technical field of angle adjustment and comprises a shell, a rotating shaft arranged on the shell, a first gear arranged on the rotating shaft, a transmission part connected with the first gear, a large clamping jaw connected with the transmission part, a shifting button connected with the large clamping jaw, a shifting rod connected with the shifting button and a key connected with the shifting rod. The transmission part comprises a ratchet wheel, teeth meshed with the ratchet wheel are arranged on the large clamping jaw, a first plane and a first cambered surface are arranged on the shifting button, the large clamping jaw is meshed and locked with the ratchet wheel when the first plane is in contact with the bottom surface of the large clamping jaw, and the large clamping jaw leaves the ratchet wheel for unlocking when the first cambered surface is in contact with the bottom surface of the large clamping jaw; the multi-angle adjusting mechanism is compact in structure, capable of adjusting multiple angles in a limited space and achieving locking and one-key unlocking at multiple positions, capable of achieving table plate angle adjusting and leveling when a chair back is in multiple position postures when the multi-angle adjusting mechanism is applied to seat backrest table plates of automobiles and other vehicles, capable of improving use comfort, capable of being applied to other various ranges and high in compatibility.

Description

Technical Field

[0001] The utility model relates to the technical field of table boards for transportation tools, and is mainly applied to vehicle table boards, involving the application of angle adjustment technology. Background Art

[0002] At present, restricted by the shape and size, it is very difficult to adjust the angle of vehicle table boards. As a result, in the face of the ever-changing technological development, especially in the fields of adjustable seats and zero-gravity seats, when the backrest angle is adjusted, the table board will almost become ineffective.

[0003] Under this background, there is an urgent need to design a new type of angle adjustment mechanism to improve the above problems. Summary of the Utility Model

[0004] In view of the above problems in the prior art, the utility model provides an angle adjustment mechanism with a compact structure, which can achieve multi-angle adjustment in a small space.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0006] An angle adjustment mechanism includes a housing, a rotating shaft arranged on the housing, a first gear arranged on the rotating shaft, a transmission part connected to the first gear, a large claw for restricting the movement of the transmission part connected to the transmission part, a dial button connected to the large claw, a dial rod connected to the dial button, and a key connected to the dial rod. The transmission part includes a ratchet wheel. The large claw is provided with teeth meshing with the ratchet wheel. The dial button is formed with a first plane and a first arc surface. When the first plane contacts the bottom surface of the large claw, the large claw meshes with the ratchet wheel. When the first arc surface contacts the bottom surface of the large claw, the large claw disengages from the ratchet wheel.

[0007] As a preference of the utility model, the transmission part includes a plurality of transmission shafts, and gears for transmission are arranged on the transmission shafts.

[0008] As a preference of the utility model, the large claw is provided with a large claw spring for pressing the large claw.

[0009] As a preference of the utility model, the key is provided with a key spring.

[0010] As a preference of the utility model, it includes a left side plate, a middle plate, and a right side plate.

[0011] As a preference of the utility model, the ratchet wheel and the large claw are arranged between the middle plate and the right side plate.

[0012] As a preference of the utility model, the dial button passes through the middle plate, and both ends of the dial button are rotatably connected to the left side plate and the right side plate.

[0013] As a preference of the present utility model, a guiding groove is provided on the left side plate, and the guiding groove is used to guide the movement of the shifting lever.

[0014] As a preference of the present utility model, it further includes a small claw and a small claw spring. The small claw is arranged opposite to the large claw and connected to the shifting button, and the small claw is used to lock the shifting button.

[0015] As a preference of the present utility model, a second plane is formed on the shifting button. When the second plane contacts the inner surface of the small claw, the small claw locks the shifting button under the drive of the small claw spring.

[0016] Due to the adoption of the above technical solution, compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. An angle adjustment mechanism of the present utility model has a compact structure, can adjust multiple angles within a limited space, and can achieve locking and one-key unlocking at multiple positions;

[0018] 2. An angle adjustment mechanism of the present utility model has a simple manufacturing process, and the modular structure design makes disassembly and maintenance convenient;

[0019] 3. When an angle adjustment mechanism of the present utility model is applied to the seat back table board of an automobile and other transportation tools, it can achieve angle adjustment and leveling of the table board when the backrest is in multiple position postures, improving the use comfort;

[0020] 4. An angle adjustment mechanism of the present utility model can be applied in other multiple ranges, has strong compatibility, provides great convenience for the industry, and provides great comfort for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By referring to the following description in conjunction with the drawings, and with a more comprehensive understanding of the present utility model, other objects and results of the present utility model will become clearer and easier to understand. In the drawings:

[0022] Figure 1 is a perspective view of the present utility model;

[0023] Figure 2 is an exploded view of the present utility model;

[0024] Figure 3 is an exploded view of the present utility model with the housing removed;

[0025] Figure 4 is a perspective view of a part of the structure of the present utility model;

[0026] Figure 5 is another perspective view of a part of the structure of the present utility model;

[0027] Figure 6 is another three-dimensional view of a part of the structure of the present utility model;

[0028] Figure 7 is a three-dimensional view of the present utility model with the housing part of the structure removed;

[0029] Figure 8 is another three-dimensional view of the present utility model with the housing part of the structure removed;

[0030] Figure 9 is a three-dimensional view of the knob of the present utility model;

[0031] The reference numerals therein include: housing 1, rotating shaft 2, first gear 3, transmission part 4, large claw 5, knob 6, lever 7, button 8, small claw 9, left side plate 10, middle plate 11, right side plate 12, fastener 13, ratchet wheel 41, transmission shaft 42, gear 43, tooth 51, large claw spring 52, positioning pin 53, first plane 61, first arc surface 62, second plane 63, connecting piece 64, button spring 81, small claw spring 91, positioning pin 92, guide groove 101, retaining piece 121, retaining piece 122. Detailed implementation manners

[0032] The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope protected by the present utility model.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. It should be pointed out that all the drawings are exemplary representations. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] The following further describes the present utility model in detail through specific embodiments in conjunction with the drawings.

[0036] Refer to Figures 1 to 9 , Figure 1 which is the perspective view of the present utility model, Figure 2 which is the exploded view of the present utility model, Figure 3 which is the exploded view of the present utility model with the housing removed, Figures 4 to 6 which is the perspective view of a partial structure of the present utility model; Figure 7 , Figure 8 which is the perspective view of a partial structure of the present utility model with the housing removed, Figure 9 which is the perspective view of the knob of the present utility model; An angle adjustment mechanism provided by the present utility model includes a housing 1, a rotating shaft 2, a first gear 3, a transmission part 4, a large claw 5, a knob 6, a lever 7, and a button 8. The rotating shaft 2 is disposed through the housing 1 and is fixedly connected to a component whose angle needs to be adjusted (such as a table board of an automobile seat back). The first gear 3 is disposed on the rotating shaft 2, and the transmission part 4 is connected to the first gear 3. The transmission part 4 includes a ratchet 41. The transmission part 4 can synchronously transmit the rotation of the rotating shaft 2 to the ratchet 41. The large claw 5 is connected to the transmission part 4. The large claw 5 is rotatable and is used to restrict the movement of the transmission part 4. The large claw 5 is provided with teeth 51 that mesh with the ratchet 41. The locking and unlocking of the rotating shaft 2 can be achieved through the meshing relationship between the large claw 5 and the ratchet 41. The knob 6 is connected to the large claw 5. The knob 6 can control the meshing or non-meshing of the large claw 5 and the ratchet 41. The lever 7 is connected to the knob 6, and the button 8 is connected to the lever 7.

[0037] In one embodiment, the transmission part 4 includes a plurality of transmission shafts 42. The transmission shafts 42 are provided with gears 43 for transmission. Different transmission shafts 42 are meshed and rotated with each other through the gears 43. During the rotation of the rotating shaft 2, the rotation speed is gradually transmitted from the first gear 3 and the plurality of gears 43 to the ratchet 41. In one embodiment, the rotation speed gradually increases from the first gear 3 to the plurality of gears 43, and finally reaches a transmission ratio of 1:4.

[0038] The knob 6 is formed with a first flat surface 61 and a first arc surface 62. When the first flat surface 61 contacts the bottom surface of the large pawl 5, the large pawl 5 meshes with the ratchet wheel 41, being in a locked state; when the first arc surface 62 contacts the bottom surface of the large pawl 5, the large pawl 5 disengages from the ratchet wheel 41, being in an unlocked state.

[0039] A large pawl spring 52 for pressing the large pawl 5 is provided on the large pawl 5 to ensure the stability of the locked state. One end of the large pawl spring 52 is clamped on a positioning pin 53 provided on the large pawl 5.

[0040] A key spring 81 is provided on the key 8. Preferably, two key springs 81 are provided, respectively on the key 8 above and below the lever 7, to provide bidirectional elastic force to the key 8, that is, one end of the key spring 81 abuts against the lever 7, and the other end abuts against the inner surface of the housing 1.

[0041] In an embodiment, it further includes a left side plate 10, a middle plate 11, and a right side plate 12 which are arranged inside the housing 1 for connecting and fixing related parts. One ends of the left side plate 10, the middle plate 11, and the right side plate 12 are all connected to the rotating shaft 2, that is, the rotating shaft 2 penetrates through one ends of the left side plate 10, the middle plate 11, and the right side plate 12. The other ends of the left side plate 10, the middle plate 11, and the right side plate 12 are all fixed by fasteners 13. The first gear 3 is located between the middle plate 11 and the left side plate 10. The ratchet wheel 41 and the large pawl 5 are located between the middle plate 11 and the right side plate 12. The ratchet wheel 41 is arranged on the transmission shaft 42 of the last stage of the transmission part 4. Two ends of the large pawl 5 are rotatably connected to corresponding holes of the middle plate 11 and the right side plate 12. One end of the large pawl spring 52 is clamped on a positioning pin 53 provided on the large pawl 5, and the other end abuts against a stop piece 121 extended from the right side plate 12. The knob 6 passes through the middle plate 11. Two ends of the knob 6 are rotatably connected to the left side plate 10 and the right side plate 12. A connecting piece 64 for connecting the lever 7 is provided on the knob 6. A guiding groove 101 is provided on the left side plate 10. The guiding groove 101 is used to guide the movement of the lever 7. The key 8 is arranged outside the left side plate 10 and penetrates through the housing 1. After pressing the key 8, the lever 7 moves up and down along the guiding groove 101, and then rotates the knob 6 to realize the unlocking and locking functions.

[0042] In one embodiment, it further includes a small claw 9 and a small claw spring 91. The small claw 9 is disposed opposite to the large claw 5 and connected to the dial 6, that is, the small claw 9 and the large claw 5 are respectively disposed on both sides of the dial 6. The small claw 9 is used to lock the dial 6. Both ends of the small claw 9 are rotatably connected to corresponding holes of the middle plate 11 and the right side plate 12. One end of the small claw spring 91 is clamped on a positioning pin 92 provided on the small claw 9, and the other end abuts against a stop piece 122 extending from the right side plate 12. A second plane 63 is formed on the dial 6. When the second plane 63 contacts the inner surface of the small claw 9, the small claw 9 locks the dial 6 under the drive of the small claw spring 91.

[0043] The following will refer to Figures 1 to 9 to illustrate the working principle of the present utility model.

[0044] Locking working principle:

[0045] The angle adjusting member is connected to the rotating shaft 2. During the flipping process of the angle adjusting member, the rotating shaft 2 rotates slowly. When the large claw 5 meshes with the ratchet wheel 41 under the drive of the large claw spring 52, the first plane 61 of the dial 6 contacts the bottom surface of the large claw 5, and the rotating shaft 2 is in a locked state, so that the angle adjusting member can be hovered.

[0046] Unlocking working principle:

[0047] The angle adjusting member is connected to the rotating shaft 2. After pressing the button 8, the button 8 drives the dial 6 to rotate. The first arc surface 62 of the dial 6 flips to lift the large claw 5, and the large claw 5 leaves the ratchet wheel 41. At this time, the ratchet wheel 41 is unlocked, and the angle adjusting member can be adjusted up or down arbitrarily. At the same time, after the second plane 63 rotates and abuts against the inner surface of the small claw 9, the small claw 9 and the second plane 63 are stationary under the drive of the small claw spring 91, and the dial 6 is in a locked state to prevent the dial 6 from automatically rotating back; pressing the button 8 again can make the rotating shaft 2 in a locked state to realize the hovering of the angle adjusting member.

[0048] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An angle adjustment mechanism, characterized in that: The invention comprises a shell, a rotating shaft arranged on the shell, a first gear arranged on the rotating shaft, a transmission part connected to the first gear, a large claw connected to the transmission part for limiting the movement of the transmission part, a dial button connected to the large claw, a dial rod connected to the dial button, and a key connected to the dial rod. The transmission part comprises a ratchet. The large claw is provided with teeth meshing with the ratchet. The dial button is formed with a first plane and a first arc surface. When the first plane contacts the bottom surface of the large claw, the large claw meshes with the ratchet. When the first arc surface contacts the bottom surface of the large claw, the large claw leaves the ratchet.

2. An angle adjustment mechanism according to claim 1, characterized in that: The transmission part comprises a plurality of transmission shafts, and gears for transmission are arranged on the transmission shafts.

3. The angle adjustment mechanism according to claim 1, characterized in that: The large claw is provided with a large claw spring for applying pressure to the large claw.

4. The angle adjustment mechanism according to claim 1, characterized in that: A key spring is arranged on the key.

5. The angle adjustment mechanism according to claim 1, characterized in that: It includes a left side panel, a middle panel and a right side panel.

6. An angle adjustment mechanism according to claim 5, characterized in that: The ratchet and the large claw are arranged between the middle plate and the right side plate.

7. The angle adjustment mechanism according to claim 5, characterized in that: The dial button is arranged through the middle plate, and two ends of the dial button are rotatably connected with the left plate and the right plate.

8. The angle adjustment mechanism according to claim 5, characterized in that: The left side plate is provided with a guide groove, and the guide groove is used to guide the movement of the shifting rod.

9. The angle adjustment mechanism according to claim 1, characterized in that: It also includes a small claw and a small claw spring. The small claw is arranged opposite to the large claw and is connected to the dial button. The small claw is used to lock the dial button.

10. An angle adjustment mechanism according to claim 9, characterized in that: A second plane is formed on the dial button. When the second plane contacts the inner surface of the small claw, the small claw locks the dial button under the drive of the small claw spring.

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