Automobile seat headrest rotating mechanism

Abstract

The utility model relates to the technical field of automobile seat headrests, and discloses an automobile seat headrest rotating mechanism which comprises an installation framework and a rotating mechanism body. The mounting framework comprises a first support and a second support, and the first support and the second support are connected through a rotating mechanism. The headrest has the following advantages and effects that when the first support in the headrest rotates, the headrest can only rotate in one direction through the locking mechanism, and after the unlocking assembly makes contact with the limiting block, the first locking part and the second locking part are rapidly separated, so that the first support is rapidly reset through the elastic force of the second torsional spring, and the headrest can only rotate in one direction. Angle adjustment and position resetting of the headrest are achieved, and comfort selection of different people in use is met. And by arranging two locking mechanisms, the locking failure probability is improved and prevented, and the impact strength of the headrest is improved. And the achievement rate of more harsh test scores of the seat whiplash experiment is correspondingly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seat headrests, in particular to a rotating mechanism for an automobile seat headrest. Background Art

[0002] A car headrest is a device installed on a car seat to support the passenger's head. During driving, the car headrest provides passengers with additional support and stability, reduces body shaking, and reduces the risk of injury.

[0003] The car headrest can also provide passengers with a comfortable leaning experience, reduce the tension and pressure of the neck muscles, and prevent cervical strain and neck pain. At the same time, it can also keep the passenger's neck and spine in a natural posture, promote blood circulation and lymph flow, and reduce fatigue.

[0004] At present, the common adjustment directions of automobile headrests are Z-up and down and X-forward and backward. Due to the diversity of human physiological structure, the up and down, front and back adjustment of the headrest cannot meet the comfort requirements of the head and neck of all people. Therefore, the inventors now propose a car seat headrest rotation mechanism. Utility Model Content

[0005] The utility model aims to provide a car seat headrest rotating mechanism, which has the effect of flexibly rotating the headrest and improving the comfort of different groups of passengers when using the seat headrest.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a car seat headrest rotation mechanism, including a mounting frame and a rotation mechanism;

[0007] The mounting frame includes a first bracket and a second bracket, and the first bracket and the second bracket are connected by a rotating mechanism, so that the first bracket can rotate on the second bracket through the rotating mechanism;

[0008] The rotating mechanism includes a supporting assembly, an installing assembly and a locking mechanism. The installing assembly is rotatably arranged on the supporting assembly, and the installing assembly is fixedly connected to the first bracket. The locking mechanism is arranged on the supporting assembly and the installing assembly, and the locking mechanism is fixed to the second bracket so as to lock and fix the rotated first bracket through the locking mechanism.

[0009] The utility model is further configured as follows: the locking mechanism includes a first locking member, a second locking member and an unlocking assembly, the first locking member and the second locking member are respectively installed on the supporting assembly and the mounting assembly, the first locking member and the second locking member are connected to each other, the unlocking assembly is installed on the supporting assembly, and the first locking member is separated and unlocked by the unlocking assembly.

[0010] By adopting the above technical solution, when the angle of the headrest needs to be adjusted, the installation component drives the second locking member to move and fix it with the first locking member.

[0011] The utility model is further configured as follows: the first locking member includes a mounting rod and a first locking portion, the mounting rod is fixedly connected to the outer side of the second bracket, and the first locking portion is fixedly arranged on the mounting rod.

[0012] By adopting the above technical solution, the first locking portion can be fixed to the second bracket through the mounting rod.

[0013] The utility model is further configured as follows: the second locking member includes a support rod and a second locking portion, the outer side of the support rod is fixedly connected to the mounting assembly, the second locking portion is mounted on the support rod, and the first locking portion and the second locking portion are connected to each other.

[0014] By adopting the above technical solution, it is convenient to obtain a locking force after the first bracket rotates.

[0015] The utility model is further configured as follows: the first locking part is a ratchet, the second locking part is a ratchet frame, the second locking part is arranged and installed on the support rod, and a first torsion spring that helps reset is installed between the second locking part and the support rod.

[0016] By adopting the above technical solution, when the first bracket rotates, the ratchet frame is driven to move.

[0017] The utility model is further configured as follows: a limit block is fixedly provided on the outside of the first locking part, the unlocking assembly includes a swivel and a protrusion, the swivel is coaxially arranged outside the first locking part, the protrusion and the swivel are integrally arranged, and the outer diameter of the protrusion is larger than the outer diameter of the first locking part, and the swivel is in contact with the limit block through the protrusion.

[0018] By adopting the above technical solution, when the first bracket adjusts the angle and rotates, it will drive the ratchet frame to move one by one along the tooth grooves of the ratchet, and clamp the main ratchet frame through the tooth grooves.

[0019] The utility model is further configured as follows: the support assembly includes a branch pipe, a side column and a reset assembly, the outer side of the branch pipe is arranged on the first locking part in a coaxially rotatable manner, and side columns are fixedly provided at both ends of the branch pipe, and the reset assembly is installed on the branch pipe.

[0020] By adopting the above technical solution, the reset component provides a restoring force to the rotated first bracket, so that the headrest can be reset and readjusted.

[0021] The utility model is further configured as follows: the mounting assembly includes a mounting frame and a through hole, the top end of the mounting frame is fixed to the first bracket, the outer side of the mounting frame is rotatably matched with the side column, the through hole is opened on the mounting frame, and the mounting frame is rotatably matched with the branch pipe through the through hole.

[0022] The utility model is further configured as follows: a mounting hole and a torsion spring groove are respectively provided on the outer sides of the branch pipe and the mounting frame; the reset component is a second torsion spring, the second torsion spring is coaxially arranged on the outer side of the branch pipe, and the two ends of the second torsion spring are respectively plugged into the mounting hole and the torsion spring groove.

[0023] By adopting the above technical solution, the second torsion spring is compressed through the torsion spring groove to facilitate the subsequent provision of restoring elastic force for the mounting frame.

[0024] The utility model is further configured as follows: a chamber communicating with the through hole is arranged inside the mounting frame, a rod groove whose inner wall is fixedly connected to the support rod is opened at the upper end of the chamber, and the inner wall of the chamber is in rotational contact with the first locking part, the rotating ring and the protrusion.

[0025] By adopting the above technical solution, the entire locking assembly can be installed in the cavity to achieve stable coordinated operation.

[0026] The beneficial effects of the utility model are:

[0027] When the first bracket in the headrest rotates, the headrest can only rotate in one direction through the locking mechanism, and after the unlocking assembly contacts the limit block, the first locking part and the second locking part are quickly separated, so that the first bracket is quickly reset by the elastic force of the second torsion spring, so as to achieve angle adjustment and position reset of the headrest, meeting the comfort selection of different people when using it;

[0028] In addition, by setting up two locking mechanisms, the probability of locking failure is improved and the impact resistance of the headrest is increased, which corresponds to the achievement rate of the more stringent test score of the seat whiplash test. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A structural schematic diagram of a car seat headrest rotation mechanism provided by an embodiment of the utility model;

[0031] Figure 2 It is a structural schematic diagram of the explosion of the rotating mechanism in the embodiment of the utility model;

[0032] Figure 3 It is a structural schematic diagram of the unlocking component in the embodiment of the utility model.

[0033] In the figure, 1, mounting frame; 2, rotating mechanism; 11, first bracket; 12, second bracket; 21, supporting assembly; 22, mounting assembly; 23, first locking member; 24, second locking member; 25, unlocking assembly; 211, branch pipe; 212, side column; 213, second torsion spring; 214, mounting hole; 221, mounting frame; 222, through hole; 223, torsion spring groove; 224, chamber; 225, rod groove; 231, mounting rod; 232, first locking part; 233, limiting block; 241, support rod; 242, second locking part; 243, first torsion spring; 251, swivel; 252, protrusion. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. 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.

[0035] The utility model embodiment specifically provides a car seat headrest rotation mechanism, please refer to Figure 1 , including a mounting frame 1 and a rotating mechanism 2.

[0036] Among them, the mounting frame 1 includes a first bracket 11 and a second bracket 12, the first bracket 11 and the second bracket 12 are respectively used to install the car seat back and the headrest, and the first bracket 11 and the second bracket 12 are connected by a rotating mechanism 2 so that the first bracket 11 can be rotated on the second bracket 12 through the rotating mechanism 2, so that the car headrest can be rotated as needed.

[0037] Specifically, the rotating mechanism 2 includes a supporting assembly 21, a mounting assembly 22 and a locking mechanism. The mounting assembly 22 is rotatably arranged on the supporting assembly 21, and the mounting assembly 22 is fixedly connected to the first bracket 11. The locking mechanism is arranged on the supporting assembly 21 and the mounting assembly 22, and the locking mechanism is fixed to the second bracket 12, so that the rotating first bracket 11 is locked and fixed in place by the locking mechanism, so that the headrest can be adjusted to a suitable leaning angle as needed, thereby improving the flexibility and comfort of use.

[0038] For further information, please refer to Figure 2The locking mechanism includes a first locking member 23, a second locking member 24 and an unlocking assembly 25. The first locking member 23 and the second locking member 24 are respectively installed on the supporting assembly 21 and the mounting assembly 22. The first locking member 23 and the second locking member 24 are connected to each other. The unlocking assembly 25 is installed on the supporting assembly 21. The first locking member 23 and the second locking member 24 are separated and unlocked by the unlocking assembly 25. When the angle of the headrest needs to be adjusted, the mounting assembly 22 drives the second locking member 24 to move and fix it with the first locking member 23, so that the headrest can obtain a suitable use angle. When the position needs to be restored, it is unlocked by the unlocking assembly 25, so that the headrest can be reset to facilitate the readjustment of the angle.

[0039] Specifically, the first locking member 23 includes a mounting rod 231 and a first locking portion 232. The mounting rod 231 is fixedly connected to the outer side of the second bracket 12, and the first locking portion 232 is fixed on the mounting rod 231, so that the first locking portion 232 can be kept fixed to the second bracket 12 through the mounting rod 231, so as to facilitate the subsequent angle adjustment and coordination between the first bracket 11 and the second bracket 12 after rotation.

[0040] Among them, the second locking member 24 includes a support rod 241 and a second locking portion 242. The outer side of the support rod 241 is fixedly connected to the installation component 22, so that the support rod 241 is connected to the first bracket 11 through the installation component 22. Therefore, when the headrest is rotated, the support rod 241 and the second locking portion 242 can be driven to move through the installation component 22. The second locking portion 242 is installed on the support rod 241, and the first locking portion 232 and the second locking portion 242 are connected to each other, so that it is convenient to obtain a locking force after the first bracket 11 is rotated.

[0041] When implementing, please refer to Figure 2 and Figure 3 The first locking portion 232 is a ratchet, and the second locking portion 242 is a ratchet frame. The ratchet frame and the ratchet teeth are meshed with each other. The second locking portion 242 is arranged and installed on the support rod 241, and a first torsion spring 243 is installed between the second locking portion 242 and the support rod 241 to help reset, so that when the first bracket 11 rotates, the ratchet frame is driven to move, and the ratchet frame is applied with an engagement and fixing force through the ratchet, so that the first bracket 11 can only rotate in one direction. After the angle is adjusted, the first bracket 11 cannot be reversed through the engagement of the ratchet and the ratchet frame, so that the headrest can maintain a usage angle.

[0042] Furthermore, a limit block 233 is fixedly provided on the outer side of the first locking portion 232, and the unlocking assembly 25 includes a swivel 251 and a protrusion 252. The swivel 251 is coaxially arranged outside the first locking portion 232, and the protrusion 252 is integrally arranged with the swivel 251, and the outer diameter of the protrusion 252 is larger than the outer diameter of the first locking portion 232. The swivel 251 and the protrusion 252 form a cam structure as a whole, and the protrusion 252 is located within the moving stroke of the ratchet frame. The swivel 251 contacts the limit block 233 through the protrusion 252, and when the first bracket 11 is adjusted, the swivel 251 is in contact with the limit block 233. When rotating at a full angle, the ratchet frame will be driven to move one by one along the teeth of the ratchet wheel, and the ratchet frame will be clamped by the teeth of the ratchet wheel to realize the unidirectional rotation of the first bracket 11. When the ratchet frame moves and contacts the protrusion 252, the ratchet frame will first apply force to the protrusion 252 to drive it to rotate synchronously with the swivel 251, until the protrusion 252 contacts the limit block 233 and is limited by force and cannot rotate. At this time, the ratchet frame is forced to rotate outward on the support rod 241 and separate from the teeth of the ratchet wheel. At this time, the unidirectional rotation restriction on the first bracket 11 is cancelled.

[0043] For further information, please refer to Figure 1 and Figure 2 The support assembly 21 includes a branch pipe 211, a side column 212 and a reset assembly. The outer side of the branch pipe 211 is arranged on the first locking portion 232 in a coaxial rotation manner, and the side columns 212 are fixed at both ends of the branch pipe 211. The reset assembly is installed on the branch pipe 211. The reset assembly provides a restoring force for the rotated first bracket 11, so that the headrest can be reset and readjusted.

[0044] Among them, the mounting assembly 22 includes a mounting frame 221 and a through hole 222. The top of the mounting frame 221 is fixed to the first bracket 11, and the outer side of the mounting frame 221 is rotatably matched with the side column 212. The side column 212 is an overall T-shaped structure. The side column 212 is inserted and fixed inside the paper tube 211, and the column cap of the side column 212 can provide limiting support for the outer side of the mounting frame 221, so that the mounting frame 221 can be stably rotated on the branch pipe 221. The through hole 222 is opened on the mounting frame 221, and the mounting frame 221 is rotatably matched with the branch pipe 211 through the through hole 222.

[0045] The branch pipe 211 and the mounting frame 221 are respectively provided with mounting holes 214 and torsion spring grooves 223. The number of mounting frames 221 is set at two locations, corresponding to the two ends of the first bracket 11, and the number of locking mechanisms is also the same. The torsion spring groove 223 only needs to be set on one of the mounting frames 221. The reset component is a second torsion spring 214, which is coaxially arranged on the outside of the branch pipe 211, and the two ends of the second torsion spring 213 are respectively plugged into the mounting hole 214 and the torsion spring groove 223. The first bracket 11 After the angle is adjusted by rotation, the mounting bracket 221 will be driven to rotate on the branch pipe 211, and the second torsion spring 214 will be compressed through the torsion spring groove 223 to facilitate the subsequent provision of a restoring elastic force for the mounting bracket 221, so that the first bracket 11 is synchronously forced to reset. When the first bracket 11 cancels the unidirectional rotation, it can quickly rebound through the elastic force of the second torsion spring 214, and then the ratchet frame is reconnected to the ratchet tooth groove through the elastic force of the first torsion spring 243 to complete the reset of the first bracket 11, and then it can be used reciprocatingly in this way.

[0046] During implementation, a chamber 224 communicating with the through hole 222 is provided inside the mounting frame 221, and the chamber 224 is used to install the locking mechanism. At the same time, since the locking mechanism is provided at two locations, the locking force is increased to improve the impact resistance of the headrest. A rod groove 225 is provided at the upper end of the chamber 224, and the inner wall is fixedly connected to the support rod 241. The inner wall of the chamber 224 is in rotational contact with the first locking portion 232, the swivel 251 and the protrusion 252, so that the entire locking assembly is installed in the chamber 224 to achieve stable coordinated operation.

[0047] 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. A car seat headrest rotation mechanism, characterized in that: It comprises a mounting frame (1) and a rotating mechanism (2); The mounting frame (1) comprises a first bracket (11) and a second bracket (12), wherein the first bracket (11) and the second bracket (12) are connected via a rotating mechanism (2) so that the first bracket (11) can rotate on the second bracket (12) via the rotating mechanism (2); The rotating mechanism (2) comprises a supporting assembly (21), a mounting assembly (22) and a locking mechanism, wherein the mounting assembly (22) is rotatably mounted on the supporting assembly (21), and the mounting assembly (22) is fixedly connected to the first bracket (11), and the locking mechanism is arranged on the supporting assembly (21) and the mounting assembly (22), and the locking mechanism is fixed to the second bracket (12), so that the first bracket (11) is locked and fixed in place after rotation by the locking mechanism.

2. The automobile seat headrest rotation mechanism according to claim 1, characterized in that: The locking mechanism comprises a first locking member (23), a second locking member (24) and an unlocking assembly (25); the first locking member (23) and the second locking member (24) are respectively mounted on a supporting assembly (21) and a mounting assembly (22); the first locking member (23) and the second locking member (24) are connected to each other; the unlocking assembly (25) is mounted on the supporting assembly (21); and the first locking member (23) and the second locking member (24) are separated and unlocked by the unlocking assembly (25).

3. The automobile seat headrest rotation mechanism according to claim 2, characterized in that: The first locking member (23) comprises a mounting rod (231) and a first locking portion (232); the mounting rod (231) is fixedly connected to the outer side of the second bracket (12); and the first locking portion (232) is fixedly arranged on the mounting rod (231).

4. The automobile seat headrest rotation mechanism according to claim 3, characterized in that: The second locking member (24) comprises a support rod (241) and a second locking portion (242); the outer side of the support rod (241) is fixedly connected to the mounting assembly (22); the second locking portion (242) is mounted on the support rod (241); and the first locking portion (232) and the second locking portion (242) are connected to each other.

5. The automobile seat headrest rotation mechanism according to claim 4, characterized in that: The first locking portion (232) is a ratchet, the second locking portion (242) is a ratchet frame, the second locking portion (242) is arranged and installed on the support rod (241), and a first torsion spring (243) is installed between the second locking portion (242) and the support rod (241) to assist in resetting.

6. The automobile seat headrest rotation mechanism according to claim 5, characterized in that: A limit block (233) is fixedly arranged on the outer side of the first locking portion (232); the unlocking assembly (25) comprises a rotating ring (251) and a protrusion (252); the rotating ring (251) is coaxially arranged outside the first locking portion (232); the protrusion (252) and the rotating ring (251) are integrally arranged; the outer diameter of the protrusion (252) is larger than the outer diameter of the first locking portion (232); the rotating ring (251) contacts the limit block (233) via the protrusion (252).

7. The automobile seat headrest rotation mechanism according to claim 6, characterized in that: The support assembly (21) comprises a branch pipe (211), a side column (212) and a reset assembly. The outer side of the branch pipe (211) is arranged on the first locking portion (232) in a coaxially rotatable manner, and the side columns (212) are fixedly arranged at both ends of the branch pipe (211). The reset assembly is installed on the branch pipe (211).

8. The automobile seat headrest rotation mechanism according to claim 7, characterized in that: The mounting assembly (22) comprises a mounting frame (221) and a through hole (222); the top end of the mounting frame (221) is fixed to the first bracket (11); the outer side of the mounting frame (221) is rotatably matched with the side column (212); the through hole (222) is provided on the mounting frame (221); and the mounting frame (221) is rotatably matched with the branch pipe (211) through the through hole (222).

9. The automobile seat headrest rotation mechanism according to claim 8, characterized in that: The branch pipe (211) and the mounting frame (221) are respectively provided with a mounting hole (214) and a torsion spring groove (223); the reset component is a second torsion spring (213); the second torsion spring is coaxially arranged on the outside of the branch pipe (211), and two ends of the second torsion spring (213) are respectively plugged into the mounting hole (214) and the torsion spring groove (223).

10. The automobile seat headrest rotation mechanism according to claim 9, characterized in that: The mounting frame (221) is provided with a chamber (224) in communication with the through hole (222), the upper end of the chamber (224) is provided with a rod groove (225) whose inner wall is fixedly connected to the support rod (241), and the inner wall of the chamber (224) is in rotational contact with the first locking portion (232), the rotating ring (251) and the protrusion (252).

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