Vehicle seat headrest height adjusting mechanism
Through the structural design of locking pin and spring fit, the problem of unstable height adjustment of the vehicle seat headrest is solved, stable locking and simplified operation are achieved, and user experience is improved.
Patent Information
- Application Number
- CN202422529532.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-19
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-19
AI Technical Summary
The existing vehicle seat headrest height adjustment mechanism is unstable due to changes in friction, which brings adverse experience to users, especially for people with less physical strength to adjust when using it.
The locking pin and spring fit structure design is adopted, and locking is achieved by automatically snapping into the locking groove to ensure the stability of the headrest height. The locking pin automatically snaps between the rectangular teeth of the rear cover plate under the spring force, simplifying the operation process.
It realizes stable locking of the headrest height, simple structure and easy to use, suitable for people with different physical strength, and improves the user experience.
Smart Images
Figure CN223174002U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of seats, and particularly relates to a headrest height adjustment mechanism for vehicle seats. Background Art
[0002] At present, for the height adjustment of vehicle seat headrests, relative positioning is generally achieved by the mutual friction between kinematic pairs, and the height adjustment is carried out by an external force to overcome the friction between kinematic pairs. Its disadvantages are that relative positioning by friction is likely to change the adjusted height due to reasons such as vibration, and frequent repeated height adjustment obviously brings a very bad experience to users. If the friction is designed to be large, then a relatively large force must be used to overcome the large friction during adjustment, which also brings a very bad experience to users with relatively small physical strength. Summary of the Invention
[0003] The purpose of the utility model is to provide a headrest height adjustment mechanism for vehicle seats with a simple structure, convenient adjustment and use, and stable locking.
[0004] The purpose of the utility model is solved as follows:
[0005] A headrest height adjustment mechanism for vehicle seats includes a front cover plate, a vertical front slideway arranged on the rear side surface of the front cover plate, a rear cover plate, a vertical rear slideway arranged on the front side surface of the rear cover plate, a lifting height gear adjustment member vertically arranged on the rear cover plate, and a lock pin capable of locking the lifting height gear adjustment member at a set height. The front slideway and the rear slideway cooperate to enable the front cover plate and the rear cover plate to slide relatively.
[0006] As a further optimization of the above technical solution, the lifting height gear adjustment member is provided with a vertical first convex strip on the front side surface of the rear cover plate, and rectangular teeth are arranged at intervals up and down on one side surface of the first convex strip, and a lock groove is formed between adjacent two rectangular teeth.
[0007] As a further optimization of the above technical solution, a first groove recessed forward in the vertical direction is arranged in the middle of the rear surface of the front cover plate, and the rectangular teeth and the lock groove on the rear cover plate extend into the first groove.
[0008] As a further optimization of the above technical solution, a transverse first chute is arranged at the rear side of the middle of the front cover plate, the lock pin is slidably arranged on the first chute, one end of the lock pin extends out of the front cover plate, and the other end is provided with a lock block that cooperates with the lock groove to lock or unlock the lifting height gear adjustment member.
[0009] As a further optimization of the above technical solution, a spring is disposed in a first chute provided in the middle of the rear surface of the front cover plate. One end of the spring abuts against a spring seat provided in the first chute, and the other end abuts against a locking pin in the first chute.
[0010] As a further optimization of the above technical solution, a rectangular convex block is provided on the rear surface of the other end of the locking pin in the backward direction. A second groove is centrally provided on the side surface of the locking block facing one end of the locking pin on the convex block. The width of the second groove can be inserted and matched with the rectangular teeth, and both side walls of the second groove are inserted and matched with the locking groove.
[0011] As a further optimization of the above technical solution, the front slideway is provided with vertical second convex strips on both side walls of the rear surface of the first rectangular frame. Vertical third grooves are provided on the relatively far side surfaces of the two second convex strips. The first rectangular frame is screwed or welded or riveted or integrally formed on the front cover plate.
[0012] As a further optimization of the above technical solution, the rear slideway is provided with a vertical first inward flanging and then inward flanging on both side walls of the front surface of the second rectangular frame. The inward flanging forms a slide rail that is slidably connected in cooperation with the third groove. The second rectangular frame is screwed or welded or riveted or integrally formed on the rear cover plate.
[0013] As a further optimization of the above technical solution, a first limiting block for restricting the front cover plate from being adjusted to the lowest position and a second limiting block for restricting the front cover plate from being adjusted to the highest position are provided on the rear cover plate. Inner flangings are provided at the upper and lower ends of both side walls of the front cover plate to form a first stop block and a second stop block for cooperating with the first limiting block and the second limiting block for limiting.
[0014] When the height of the headrest needs to be adjusted in the present utility model, as long as the locking pin is pushed inward to unlock, the rear cover plate can be pulled up and down to the required height. After releasing the locking pin, under the elastic force of the spring, the locking block on the locking pin can automatically snap into the locking groove between two adjacent rectangular teeth of the rear cover plate to lock. It cannot be unlocked without pushing the locking pin. The structure of the present utility model is simple, convenient to adjust and use, and has good locking stability, and is applicable to the height adjustment of the vehicle seat headrest. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is the rear view of the present utility model.
[0016] Figure 2 is the cross-sectional view of the present utility model.
[0017] Figure 3 is the front view of the rear slideway of the present utility model.
[0018] Figure 4It is the front view of the front slideway of the present utility model.
[0019] Figure 5 It is the three-dimensional schematic diagram of the locking pin of the present utility model.
[0020] Figure 6 It is the three-dimensional schematic diagram of the front slideway of the present utility model.
[0021] Figure 7 It is the three-dimensional schematic diagram of the rear slideway of the present utility model.
[0022] Figure 8 It is the three-dimensional schematic diagram of the present utility model after removing the front cover plate.
[0023] Figure 9 It is the three-dimensional schematic diagram of the combined state of the front cover plate, the locking pin and the spring of the present utility model.
[0024] Figure 10 It is the three-dimensional schematic diagram of the front cover plate of the present utility model.
[0025] Figure 11 It is the three-dimensional schematic diagram of the present utility model. Specific embodiments
[0026] The following further describes the present utility model with specific embodiments in conjunction with the accompanying drawings. See Figures 1 - 11 :
[0027] A vehicle seat headrest height adjustment mechanism includes a front cover plate 10, a vertical front slideway 50 provided on the rear side surface of the front cover plate 10, a rear cover plate 20, a vertical rear slideway 60 provided on the front side surface of the rear cover plate 20, a lifting height gear adjustment member vertically provided on the rear cover plate 20, and a locking pin 30 that can lock the lifting height gear adjustment member at a set height. The front slideway 50 and the rear slideway 60 cooperate to enable the front cover plate 10 and the rear cover plate 20 to slide relative to each other.
[0028] As a further optimization of the above technical solution, the lifting height gear adjustment member is provided with a vertical first convex strip 21 on the front side surface of the rear cover plate 20. Rectangular teeth 22 are arranged at intervals up and down on one side surface of the first convex strip 21, and a locking groove 25 is formed between two adjacent rectangular teeth 22.
[0029] As a further optimization of the above technical solution, a first concave groove 13 recessed forward is provided in the middle of the rear surface of the front cover plate 10 in the vertical direction, and the rectangular teeth 22 and the locking groove 25 on the rear cover plate 20 extend into the first concave groove 13.
[0030] As a further optimization of the above technical solution, a transverse first sliding groove 14 is provided in the middle of the rear surface of the front cover plate 10, and the locking pin 30 is slidably arranged on the first sliding groove 14. One end 31 of the locking pin 30 extends outside the front cover plate 10, and the other end is provided with a locking block 33 that cooperates with the locking groove 25 to lock or unlock the lifting height gear adjusting member.
[0031] As a further optimization of the above technical solution, a spring 40 is arranged in the first sliding groove 14 provided at the rear side of the middle of the front cover plate 10. One end of the spring 40 abuts against the spring seat 15 arranged in the first sliding groove, and the other end abuts against the locking pin 30 in the first sliding groove 14.
[0032] As a further optimization of the above technical solution, a rectangular convex block 33 is arranged backward on the rear surface 36 of the other end of the locking pin 30. A second groove 35 is centrally arranged on the side surface of the locking block facing one end of the locking pin 30 on the convex block 33. The width of the second groove 35 can be inserted and matched with the rectangular teeth 22, and the two side walls 34 of the second groove 35 are inserted and matched with the locking groove 25.
[0033] As a further optimization of the above technical solution, the front sliding track 50 is provided with vertical second convex strips 52 on the two side walls of the rear surface of the first rectangular frame 51. Vertical third grooves 53 are arranged on the relatively far side surfaces of the two second convex strips 52. The first rectangular frame 51 is screwed or welded or riveted or integrally formed on the front cover plate 10.
[0034] As a further optimization of the above technical solution, the rear sliding track 60 is provided with a vertical first inward flanging 62 and then an inward flanging 63 on the two side walls of the front surface of the second rectangular frame 61. The inward flanging 63 forms a sliding rail that is inserted and matched with the third groove 53. The second rectangular frame 61 is screwed or welded or riveted or integrally formed on the rear cover plate 20.
[0035] As a further optimization of the above technical solution, a first limiting block 24 for restricting the front cover plate 10 from being adjusted to the lowest position and a second limiting block 23 for restricting the front cover plate 10 from being adjusted to the highest position are arranged on the outer surface 26 of the side wall of the rear cover plate 20. Inner flangings are arranged at the upper and lower ends of the two side walls 12 of the front cover plate 10 to form a first stop block 11 and a second stop block 16 that cooperate with the first limiting block 24 and the second limiting block 23 for limiting.
[0036] In the above, the front indicated by the front-back direction refers to the direction pointing to the front cover plate as the front, and the direction pointing to the rear cover plate as the rear.
[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still make simple substitutions or modifications of similar technologies to the technical solutions or technical features recorded in the foregoing embodiments, and these simple substitutions or modifications do not cause the essence of the corresponding technical solutions to deviate from the spirit and essence of the technical solutions of the embodiments of the present invention, and are still within the protection scope of the present invention.
Claims
1. A vehicle seat headrest height adjustment mechanism, characterized in that: It includes a front cover plate, a vertical front slideway arranged on the rear side surface of the front cover plate, a rear cover plate, a vertical rear slideway arranged on the front side surface of the rear cover plate, a lifting height gear adjusting member vertically arranged on the rear cover plate, and a locking pin capable of locking the lifting height gear adjusting member at a set height. The front slideway and the rear slideway cooperate to enable the relative sliding of the front cover plate and the rear cover plate.
2. The height adjustment mechanism of a vehicle seat headrest according to claim 1, wherein: The lifting height gear adjusting member is a vertical first rib arranged on the front side surface of the rear cover plate. Rectangular teeth are arranged at intervals up and down on one side surface of the first rib, and a locking groove is formed between adjacent two rectangular teeth.
3. The height adjustment mechanism of a vehicle seat headrest according to claim 2, characterized in that: A first groove concave forward in the vertical direction is arranged in the middle of the rear surface of the front cover plate, and the rectangular teeth and the locking groove on the rear cover plate extend into the first groove.
4. The height adjustment mechanism of a vehicle seat headrest according to claim 2, characterized in that: A horizontal first chute is arranged at the rear side of the middle of the front cover plate. The locking pin is slidably arranged on the first chute. One end of the locking pin extends out of the front cover plate, and a locking block for cooperating with the locking groove to lock or unlock the lifting height gear adjusting member is arranged at the other end.
5. The height adjustment mechanism of a vehicle seat headrest according to claim 4, characterized in that: A spring is arranged in the first chute arranged at the rear side of the middle of the front cover plate. One end of the spring abuts against a spring seat arranged in the first chute, and the other end abuts against the locking pin in the first chute.
6. The height adjustment mechanism of a vehicle seat headrest according to claim 4, characterized in that: A rectangular convex block is arranged on the rear surface of the other end of the locking pin in the backward direction. A second groove is arranged in the middle on the side surface of the locking block towards one end of the locking pin on the convex block. The width of the second groove can be in plug-in fit with the rectangular teeth, and the two side walls of the second groove are in plug-in fit with the locking groove.
7. A vehicle seat headrest height adjustment mechanism according to any one of claims 1-6, characterized in that: The front slideway is that vertical second ribs are arranged on the two side walls of the rear surface of the first rectangular frame. Vertical third grooves are arranged on the relatively far-away side surfaces of the two second ribs. The first rectangular frame is screwed or welded or riveted or integrally formed on the front cover plate.
8. The height adjustment mechanism of a vehicle seat headrest according to claim 7, characterized in that: The rear slideway is that vertical previous flanges and then inner flanges are arranged on the two side walls of the front surface of the second rectangular frame. The inner flanges form slide rails in sliding connection with the third grooves. The second rectangular frame is screwed or welded or riveted or integrally formed on the rear cover plate.
9. A vehicle seat headrest height adjustment mechanism according to any one of claims 1-6, characterized in that: A first limit block for restricting the front cover plate from being adjusted to the lowest position and a second limit block for restricting the front cover plate from being adjusted to the highest position are arranged on the rear cover plate. Inner flanges are arranged at the upper and lower ends of the two side walls of the front cover plate to form a first stop block and a second stop block for cooperating with the first limit block and the second limit block for limiting.