Angle adjusting structure and angle adjuster

Abstract

The utility model provides an angle adjuster which comprises the angle adjusting structure and further comprises a guide plate, a ratchet wheel and a protective sleeve. Rotating shafts on the two sides of the cam are rotationally arranged on the guide plate and the ratchet wheel in a penetrating mode correspondingly, and the adjacent sides of the guide plate and the ratchet wheel are in butt joint and sealed outside the angle adjusting structure in a matched mode. According to the large operation angle structure for the multi-tooth-piece angle adjuster, certain errors are allowed in the manufacturing process through the optimized number of the tooth pieces, and the overall performance of the angle adjuster cannot be remarkably affected. Due to the fault tolerance, the strict requirement for manufacturing precision is lowered, the production cost can be lowered, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of angle adjusters, in particular to an angle adjustment structure and an angle adjuster. Background Art

[0002] The seat recliner is a mechanical device installed on the seat. Its main function is to adjust the inclination angle of the seat back to meet the needs of different passengers and improve comfort and safety. The design and working principle of the seat recliner are crucial to the comfort and functionality of the car seat.

[0003] At present, as the safety requirements for car seats are getting higher and higher, the strength requirements for car seat recliners are also increasing. However, due to the limitation of manufacturing precision, most three-tooth plate and four-tooth plate recliner products will fail to lock properly when the manufacturing precision cannot be met, resulting in the failure of the entire recliner in safety tests such as collision. Based on the above, this application proposes an angle adjustment structure and angle adjustment to solve the defect that individual teeth cannot be locked properly. Utility Model Content

[0004] The utility model provides a large operating angle structure for a multi-tooth blade angle adjuster, which solves the problems mentioned in the above background technology.

[0005] The technical solution of the utility model is achieved in this way:

[0006] An angle adjustment structure comprises a cam and a paddle arranged outside the cam, wherein one side of the paddle outside is provided with a plurality of tooth plates, and the number of the tooth plates is six.

[0007] Furthermore, the interior of the plectrum is provided with an adapting opening and a plurality of positioning openings located on the outside thereof, the exterior of the cam is provided with a plurality of positioning structures, the exterior of the cam fits in the adapting opening, and the positioning structures fit in the positioning openings.

[0008] Furthermore, the positioning structure includes a first protrusion and a second protrusion, the width of the second protrusion is smaller than the width of the first protrusion, and the second protrusion is arranged on the side of the cam away from the tooth plate; one side of the first protrusion abuts against one side of the sliding port, and one side of the second protrusion abuts against the other side of the sliding port.

[0009] Furthermore, at least two sliding blocks are arranged on one side of the tooth plate close to the paddle, and a sliding opening is opened in the paddle, one of the sliding blocks is adapted to be in the sliding opening and slides along the sliding opening, and the other sliding block is adapted to be in the positioning opening and slides along the inner top side thereof.

[0010] Furthermore, a rotating shaft is provided through the cam, and coil springs are respectively sleeved on both sides of the rotating shaft; the inner side of the coil spring is polygonal, and the outer contour of the rotating shaft is polygonal, and the two cooperate with each other.

[0011] Furthermore, the outer sleeve of the rotating shaft is provided with a wear-resistant sheet, and the wear-resistant sheet is located on a side of the coil spring close to the cam.

[0012] The angle adjuster includes the angle adjustment structure, and also includes a guide plate, a ratchet and a sleeve; the rotating shafts on both sides of the cam are respectively rotatably arranged on the guide plate and the ratchet, and the adjacent sides of the guide plate and the ratchet are mutually docked and sealed on the outside of the angle adjustment structure; the side of the ratchet away from the guide plate is provided with a sleeve.

[0013] Furthermore, the inner side of the ratchet wheel has an annular tooth structure, which is meshed with the tooth plate.

[0014] Furthermore, a plurality of guide protrusions are provided on the inner side of the guide plate, and the surfaces of the guide protrusions are in contact with a side of the tooth plate away from the ratchet wheel.

[0015] Beneficial effects of the technical solution provided by this application:

[0016] 1. This angle adjustment structure increases the number of locked teeth, thereby improving the overall locking strength and safety. Even if individual teeth fail due to manufacturing accuracy problems, the remaining teeth can still provide sufficient locking strength to ensure the function and safety of the recliner.

[0017] 2. The optimized number of teeth in this recliner allows for a certain amount of error in the manufacturing process without significantly affecting the overall performance of the recliner. This tolerance reduces the stringent requirements for manufacturing accuracy, helping to reduce production costs and improve production efficiency. Increasing the number of teeth may also help improve the durability and reliability of the recliner, because the stress dispersed across more teeth can reduce wear on individual teeth and extend the service life of the recliner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 work.

[0019] Figure 1 This is an exploded schematic diagram of the angle adjustment structure of the utility model;

[0020] Figure 2 This is an explosion diagram of the angle adjuster of the utility model.

[0021] In the figure: 1 cam, 11 rotating shaft, 12 first protrusion, 13 second protrusion; 2 paddle, 21 adapting opening, 22 positioning opening, 23 sliding opening; 3 tooth plate, 31 sliding block; 4 coil spring, 5 wear-resistant plate;

[0022] 6 guide plate, 61 guide protrusion, 7 ratchet, 8 sheath. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1 , an angle adjustment structure, including a cam 1 and a paddle 2 arranged outside the cam, a plurality of teeth 3 are arranged on one side of the outside of the paddle 2, and the number of the teeth 3 is six.

[0025] By providing up to six teeth 3, the angle adjustment structure increases the number of locking points, thereby improving the locking reliability of the seat back in various postures. This is crucial to solving the problem in the prior art that individual teeth cannot be properly locked due to manufacturing precision limitations. Increasing the number of teeth 3 helps to maintain the stability of the seat back in extreme situations such as collisions, thereby enhancing the safety of the recliner. Multiple teeth 3 allow for finer angle adjustments, allowing passengers to make more personalized adjustments based on their comfort, improving the riding experience.

[0026] In some embodiments, the interior of the paddle 2 is provided with an adapter opening 21 and a plurality of positioning openings 22 located on the outside thereof, and the exterior of the cam 1 has a plurality of positioning structures. The exterior of the cam 1 fits in the adapter opening 21 , and the positioning structures fit in the positioning openings 22 .

[0027] By providing an adapter 21 and multiple positioning ports 22 inside the paddle 2, and designing multiple positioning structures outside the cam 1, this precise matching relationship improves the positioning accuracy of the recliner and ensures the correct docking between the cam 1 and the paddle. The design of the adapter 21 and the positioning port 22, as well as the positioning structure on the cam 1 that cooperates therewith, enhances the stability of the internal components of the recliner and reduces the shaking or misalignment that may occur during operation. The provision of the adapter 21 and the positioning port 22 enables the rotation of the cam 1 to be smoothly transmitted to the paddle 2, thereby driving the movement of the tooth plate 3, ensuring the smoothness and reliability of the operation of the recliner.

[0028] In some embodiments, the positioning structure includes a first protrusion 12 and a second protrusion 13, the width of the second protrusion 13 is smaller than the width of the first protrusion 12, and the second protrusion 13 is arranged on the side of the cam 1 away from the tooth plate 3; one side of the first protrusion 12 abuts against one side of the sliding opening 23, and one side of the second protrusion 13 abuts against the other side of the sliding opening 23.

[0029] The width of the second protrusion 13 is smaller than that of the first protrusion 12. This design intentionally reduces the size of the second protrusion 13 to make more space on the cam 1 for the movement of the tooth piece 3 and reduce interference with the movement of the tooth piece 3. The first protrusion 12 and the second protrusion 13 are respectively located on both sides of the sliding opening 23. This symmetrical layout helps to ensure that the movement of the paddle 2 driven by the cam 1 is more stable and accurate, thereby improving the operating accuracy of the recliner.

[0030] In some embodiments, at least two sliding blocks 31 are provided on the side of the tooth plate 3 close to the paddle 2, and a sliding opening 23 is opened in the paddle 2, one of the sliding blocks 31 is adapted to the sliding opening 23 and slides along it, and the other sliding block 31 is adapted to the positioning opening 22 and slides along its inner top side.

[0031] By providing at least two sliding blocks 31 on the tooth piece 3, the angle adjuster can achieve more flexible and precise angle adjustment. The design of the two sliding blocks allows the tooth piece 3 to slide synchronously in the sliding opening 23 and the positioning opening 22 of the paddle 2. This dual sliding mechanism enhances the stability of the tooth piece and ensures the accuracy and reliability during the adjustment process. The provision of the two sliding blocks 31 helps to distribute and transmit force more evenly, reducing wear or failure caused by uneven distribution of force.

[0032] In some embodiments, a rotating shaft 11 is provided through the cam 1, and coil springs 4 are respectively sleeved on both sides of the rotating shaft 11; the inner side of the coil spring 4 is polygonal, and the outer contour of the rotating shaft 11 is polygonal, and the two cooperate with each other.

[0033] Coil springs 4 usually have a smaller volume, and they can provide the required elastic force in a smaller space. This is because the design of coil springs 4 allows them to reduce their volume when compressed, thereby saving space. Coil springs 4 work in the axial direction and can directly transmit force to the shaft 11 connected to it without going through a complex conversion mechanism. This reduces the need for additional space because no additional space is required for force conversion. The inner side of the coil spring 4 and the outer contour of the shaft 11 are both polygonal, and this polygonal design provides a stable mechanical connection to ensure that the coil spring 4 will not fall off or shift during the rotation of the cam 1. The combination of the polygonal coil spring 4 and the shaft 11 provides a larger contact area, which helps to optimize the efficiency of force transmission, reduce energy loss, and improve the operating sensitivity of the recliner. The polygonal design may also help reduce wear, because the polygonal contact surface is less likely to slide when subjected to force than the circular contact surface, thereby extending the service life of the coil spring 4 and the shaft 11.

[0034] The recliner is in a locked state, the cam 1 is fixed in a specific position, and the coil spring 4 is sleeved on the shaft 11 to provide the cam 1 with a reset force. The user operates the recliner, causing the cam 1 to start rotating. The rotation of the cam 1 is transmitted to the coil spring 4 through the polygonal shaft 11, and the coil spring is compressed or stretched to store energy. The rotation of the cam 1 drives the action of the paddle 2 and the tooth 3 to unlock the seat back and adjust the angle. After the user adjusts to the desired angle, the operation is released, and the energy stored in the coil spring 4 is transmitted through the polygonal shaft 11 to drive the cam 1 back to the initial position to achieve locking.

[0035] In some embodiments, the outer sleeve of the rotating shaft 11 is provided with a wear-resistant sheet 5 , and the wear-resistant sheet 5 is located on a side of the coil spring 4 close to the cam 1 .

[0036] The wear-resistant sheet 5 is located on the side of the coil spring 4 close to the cam 1. This layout helps protect the coil spring from friction and wear, ensuring that the elasticity and function of the coil spring are not damaged. The wear-resistant sheet can reduce the friction between the shaft and the coil spring, reduce energy loss, and improve the mechanical efficiency of the recliner.

[0037] The rotation of the cam 1 is transmitted to the coil spring 4 through the rotating shaft 11, and the coil spring 4 is compressed or stretched to store energy. In this process, the role of the wear-resistant sheet 5 is to reduce the friction between the rotating shaft 11 and the coil spring 4. The rotation of the cam 1 drives the action of the paddle 2 and the tooth plate 3 to unlock and adjust the angle of the seat back. After the user adjusts to the desired angle, the operation is released, and the energy stored in the coil spring 4 is transmitted through the rotating shaft 11 and the wear-resistant sheet 5, driving the cam 1 to return to the initial position to achieve locking. The wear-resistant sheet 5 reduces the wear between the coil spring 4 and the rotating shaft 11 during the whole process, protects the internal mechanism, and ensures the long-term and stable operation of the recliner.

[0038] Reference Figure 2The angle adjuster includes the angle adjustment structure, and also includes a guide plate 6, a ratchet 7 and a sheath 8; the rotating shafts 11 on both sides of the cam 1 are respectively rotatably arranged on the guide plate 6 and the ratchet 7, and the adjacent sides of the guide plate 6 and the ratchet 7 are mutually docked and sealed on the outside of the angle adjustment structure.

[0039] The addition of the guide plate 6 and the ratchet 7 provides a stable support for the cam 1, ensuring the accuracy and reliability of the cam 1 during rotation. The adjacent sides of the guide plate 6 and the ratchet 7 are butted against each other to form a seal on the outside of the recliner structure, which helps prevent dust, dirt and other impurities from entering the interior of the recliner, thereby improving the durability and maintainability of the recliner. The design of the guide plate 6 and the ratchet 7 helps to more effectively transmit the force generated by the cam 1 and the tooth piece 3, ensuring smoother locking and unlocking of the seat back. The function of the sheath 8 is to protect the components inside the recliner, such as the cam 1, the paddle 2 and the tooth piece 3, from the influence of the external environment, thereby extending the service life of the recliner.

[0040] In some embodiments, the inner side of the ratchet wheel 7 has an annular tooth structure, which meshes with the tooth plate 3 .

[0041] The annular toothed structure on the inner side of the ratchet 7 meshes with the toothed plate 3, providing a precise locking mechanism. This meshing method can ensure the precise positioning of the toothed plate 3 during the locking and unlocking process, reducing errors. The design of the annular toothed structure helps to improve the bite strength between the ratchet 7 and the toothed plate 3, thereby enhancing the stability in the locked state and ensuring that the seat back will not move accidentally due to external forces after being locked.

[0042] In some embodiments, a plurality of guide protrusions 61 are disposed on the inner side of the guide plate 6 , and the surface of the guide protrusions 61 is in contact with a side of the tooth plate 3 away from the ratchet wheel 7 .

[0043] The contact between the guide protrusion 61 and the tooth piece 3 helps to reduce the swing and vibration of the tooth piece in the guide plate 6 slot, and enhances the stability of the angle adjuster during operation. The physical contact of the guide protrusion 61 can disperse the friction generated by the tooth piece during sliding, thereby reducing wear and extending the service life of the tooth piece and the guide plate.

[0044] Working principle:

[0045] Initial position of the locked state: The recliner is in the locked state, and the cam 1 is fixed in its predetermined position. A plurality of tooth plates 3 are mounted on one side of the outside of the paddle 2, which mesh with the annular toothed structure on the inner side of the ratchet 7 to keep the seat back at a set angle. The outside of the cam 1 is designed with a plurality of positioning structures, including a first protrusion 12 and a narrower second protrusion 13. These protrusions cooperate with the adapter port 21 and the positioning port 22 inside the paddle 2 to ensure precise docking between the cam 1 and the paddle 2. The width of the second protrusion 13 is smaller than that of the first protrusion 12. This design allows the second protrusion 13 to be positioned on the cam 1 away from the tooth plate 3, providing sufficient space for the movement of the tooth plate 3 and reducing possible interference with the tooth plate 3 during the unlocking process.

[0046] Unlocking process: The user operates the recliner, triggering the cam 1 to start rotating. This rotation is transmitted to the coil spring 4 through the rotating shaft 11, and the coil spring is compressed or stretched to store energy. As the cam 1 rotates, the first protrusion 12 pushes the paddle 2, and the paddle 2 then drives the tooth piece 3 connected to it. Due to the staggered layout of the second protrusion 13, the tooth piece 3 can move freely along the slide groove of the guide plate 6 without being interfered by other structures on the cam 1. The sliding block 31 on the tooth piece 3 slides synchronously in the sliding port 23 and the positioning port 22 to ensure that the tooth piece 3 moves smoothly and reduces friction. The guide protrusion 61 on the inner side of the guide plate 6 ensures that the tooth piece 3 slides along the predetermined path to reduce swinging and vibration. As the tooth pieces 3 move along the slide groove of the guide plate 6, they gradually disengage from the annular tooth structure of the ratchet 7. When the tooth piece 3 is completely disengaged from the ratchet lock, the seat back is unlocked and the user can manually adjust the seat back to the desired angle.

[0047] Locking process: After the release operation, the previously compressed or stretched coil spring 4 begins to release the stored energy. The resetting of the coil spring 4 is achieved by transmitting force through the rotating shaft 11, and the coil springs 4 are respectively sleeved on both sides of the rotating shaft 11. The energy release of the coil spring 4 drives the cam 1 to rotate in the opposite direction and return to its initial position. In this process, the role of the wear-resistant sheet 5 begins to appear. It is located on the side of the coil spring 4 close to the cam 1, reducing the friction between the rotating shaft 11 and the coil spring 4, protecting the coil spring 4 from wear, and ensuring the long-term stable operation of the recliner. As the cam 1 rotates, the paddle 2 also begins to move in the opposite direction, driving the tooth piece 3 connected to it. The wear-resistant sheet 5 continues to play a role in this process. It is located outside the rotating shaft 11 and contacts the polygon on the inner side of the coil spring 4 to reduce the friction and wear between the two. Driven by the paddle 2, the tooth piece 3 moves along the slide groove of the guide plate 6 and gradually re-engages with the annular tooth structure on the inner side of the ratchet 7. The guide protrusion 61 ensures that the tooth piece 3 maintains the correct path during the sliding process to reduce swinging and vibration. When the tooth piece 3 is fully engaged with the annular tooth structure of the ratchet wheel 7, the seat back is locked at the angle set by the user. At this time, the recliner completes the conversion from unlocking to locking, ensuring the stability of the seat back and the safety of the user.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An angle adjustment structure, comprising a cam (1) and a paddle (2) arranged outside the cam, characterized in that: A plurality of tooth pieces (3) are arranged on one side of the outside of the plectrum (2), and the number of the tooth pieces (3) is six; an adapting opening (21) and a plurality of positioning openings (22) located on the outside of the plectrum (2) are provided inside the plectrum (2); a plurality of positioning structures are provided on the outside of the cam (1); the outside of the cam (1) fits in the adapting opening (21), and the positioning structures fit in the positioning openings (22); The positioning structure comprises a first protrusion (12) and a second protrusion (13); the width of the second protrusion (13) is smaller than the width of the first protrusion (12), and the second protrusion (13) is arranged on a side of the cam (1) away from the tooth plate (3); one side of the first protrusion (12) abuts against one side of the sliding opening (23), and one side of the second protrusion (13) abuts against the other side of the sliding opening (23); At least two sliding blocks (31) are arranged on one side of the tooth piece (3) close to the paddle (2); a sliding opening (23) is provided in the paddle (2); one of the sliding blocks (31) is fitted in the sliding opening (23) and slides along the sliding opening; and the other sliding block (31) is fitted in the positioning opening (22) and slides along the inner top side thereof.

2. The angle adjustment structure according to claim 1, characterized in that: A rotating shaft (11) is provided through the cam (1), and coil springs (4) are respectively sleeved on both sides of the rotating shaft (11); the inner side of the coil spring (4) is polygonal, and the outer contour of the rotating shaft (11) is polygonal, and the two cooperate with each other.

3. The angle adjustment structure according to claim 2, characterized in that: The outer sleeve of the rotating shaft (11) is provided with a wear-resistant sheet (5), and the wear-resistant sheet (5) is located on a side of the coil spring (4) close to the cam (1).

4. An angle adjuster, characterized in that: It comprises an angle adjustment structure as described in any one of claims 1 to 3, and also comprises a guide plate (6), a ratchet (7) and a sleeve (8); the rotating shafts (11) on both sides of the cam (1) are respectively rotatably arranged on the guide plate (6) and the ratchet (7), and the adjacent sides of the guide plate (6) and the ratchet (7) are mutually butted and sealed on the outside of the angle adjustment structure; the side of the ratchet (7) away from the guide plate (6) is provided with a sleeve (8).

5. The angle adjuster according to claim 4, characterized in that: The inner side of the ratchet wheel (7) has an annular toothed structure, which meshes with the toothed plate (3).

6. The angle adjuster according to claim 4, characterized in that: A plurality of guide protrusions (61) are provided on the inner side of the guide plate (6), and the surface of the guide protrusion (61) is in contact with the side of the tooth plate (3) away from the ratchet wheel (7).

Images