Headrest lifting adjusting structure
By using the engagement structure of the insert rod and the ratchet groove, and the reset function of the spring clip rod, the problem of numerous parts and insufficient safety in traditional seat headrest lifting and unlocking mechanisms is solved, achieving convenient, stable adjustment and high safety of the headrest.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional headrest lifting and unlocking mechanisms have many parts, complex structures, and insufficient security, and are prone to locking problems after prolonged use.
The headrest is securely locked by a locking structure of a plug rod and a ratchet groove, combined with the reset function of a spring and a retaining spring rod. The headrest is locked securely by a button operation, and the cooperation between the thrust ramp and the force-bearing ramp ensures a smooth and stable adjustment process.
It enables convenient height adjustment of the headrest, improving ease of use and safety, reducing the possibility of mechanical failure, and meeting the height adjustment needs in different scenarios.
Smart Images
Figure CN224013448U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of seat parts, and particularly relates to a headrest lifting adjusting structure. BACKGROUND
[0002] The headrest of a car seat arranged at the top of the car seat generally serves to support the head of a passenger and relieve fatigue, and more importantly, serves to protect the neck of the passenger from injury in the event of a collision. The headrest of the seat needs to be adjusted to a suitable height according to the different body sizes of different people to serve to protect the head and neck of the passenger, and therefore, the headrest of a common seat has a lifting adjusting function.
[0003] However, the conventional headrest lifting unlocking mechanism can only lock one of the side rods of the headrest rod, and the locking reliability is poor, especially after long-term use, the components are prone to aging, and the headrest height cannot be locked, which causes a safety hazard, and it is urgent to solve the above problems. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a headrest lifting adjusting structure, and solves the technical problems of too many parts, a complex structure and insufficient safety of the existing double-side locking mechanism.
[0005] To solve the above technical problems, the utility model adopts the following technical scheme:
[0006] A headrest lifting adjusting structure, comprising a headrest main part, a headrest rear shell and a lifting plug rod type adjusting mechanism, the headrest main part is arranged at the front side of the headrest rear shell;
[0007] The lifting plug rod type adjusting mechanism comprises a middle support main part and two plug rods, the middle support main part is arranged in the headrest rear shell, the two sides of the middle support main part are respectively provided with plug rod guide sleeve parts, the upper parts of the two plug rods are respectively arranged in the two plug rod guide sleeve parts, the two plug rod guide sleeve parts are further provided with notches, and the upper parts of the plug rods are provided with a plurality of ratchet grooves; two through holes are arranged at the bottom of the headrest rear shell, and the two through holes are used for the downward penetration of the two plug rods;
[0008] The lower part of the middle support main part is provided with a sliding channel cavity, a switch main part is arranged in the sliding channel cavity, the switch main part can move in the left-right horizontal direction in the sliding channel cavity, a clamping spring rod and an elastic sheet are arranged in the sliding channel cavity, the clamping spring rod can move in the front-back horizontal direction, the two ends of the clamping spring rod are respectively located at the notches of the two plug rod guide sleeve parts, and the two ends of the clamping spring rod respectively form a clamping structure with the ratchet grooves on the two plug rods;
[0009] The elastic sheet is in a trapezoidal structure, the elastic sheet exerts force on the clamping spring rod, so that the clamping spring rod always has a movement trend, and the movement trend makes the two ends of the clamping spring rod move beyond the notches;
[0010] When the switch body moves in the horizontal direction, the switch body can push the clamping spring rod, so that both ends of the clamping spring rod move in the direction away from the notch.
[0011] Further, the switch body is provided with a pushing inclined surface, and the clamping spring rod is provided with a force receiving inclined rod part which abuts against the pushing inclined surface.
[0012] A key base is further installed on the headrest rear shell, and a key is installed on the key base and connected with one end of the switch body, and a return spring is connected between the switch body and the middle support body.
[0013] Compared with the prior art, the headrest lifting and adjusting structure has the advantages that: the headrest can be lifted and adjusted by pressing the key, and the user does not need to perform complex operations, so that the use convenience is improved; the insertion rod and the ratchet groove are combined with the return functions of the elastic sheet and the clamping spring rod, so that the headrest can be stably locked after adjustment, and loosening or sliding down is avoided; the pushing inclined surface and the force receiving inclined rod part are combined with the automatic return function of the return spring, so that the adjustment process is smooth and stable, and the possibility of mechanical failure is reduced; the headrest lifting and adjusting structure can be widely applied to various seat headrests, meets the height adjusting requirements in different scenes, and has high universality. BRIEF DESCRIPTION OF DRAWINGS
[0014] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application. In the drawings:
[0015] Figure 1 It is a structural schematic view of a headrest lifting and adjusting structure;
[0016] Figure 2 It is an exploded view of a headrest lifting and adjusting structure;
[0017] Figure 3 It is a structural schematic view of a lifting insertion rod type adjusting mechanism;
[0018] Figure 4 It is an exploded view of a lifting insertion rod type adjusting mechanism;
[0019] Figure 5 It is a connection schematic view of a switch body, an elastic sheet and a clamping spring rod. DETAILED DESCRIPTION
[0020] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of the present application.
[0021] The present application will be further described in detail below with reference to the embodiments.
[0022] As shown in the specific embodiment 1 of the headrest lifting adjustment structure provided by the present application, Figures 1-5
[0023] The headrest lifting adjustment structure comprises a headrest main body 1, a headrest rear shell 2 and a lifting plug rod type adjustment mechanism, the headrest main body 1 is arranged at the front side of the headrest rear shell 2;
[0024] The lifting plug rod type adjustment mechanism comprises a middle support body 3 and two plug rods 4, the middle support body 3 is arranged in the headrest rear shell 2, the two sides of the middle support body 3 are respectively provided with plug rod guide sleeve parts 5, the upper parts of the two plug rods 4 are respectively arranged in the two plug rod guide sleeve parts 5, the two plug rod guide sleeve parts 5 are further provided with notches 6, and the upper parts of the plug rods 4 are provided with a plurality of ratchet grooves 7; two through holes are arranged at the bottom of the headrest rear shell 2, and the two through holes are used for the two plug rods 4 to pass downward;
[0025] The lower part of the middle support body 3 is provided with a sliding channel cavity, a switch main body 8 is arranged in the sliding channel cavity, the switch main body 8 can move in the horizontal direction left and right in the sliding channel cavity, a clamping spring rod 9 and an elastic sheet 10 are arranged in the sliding channel cavity, the clamping spring rod 9 can move in the horizontal direction forward and backward, the two ends of the clamping spring rod 9 are respectively located at the notches 6 of the two plug rod guide sleeve parts 5, and the two ends of the clamping spring rod 9 respectively form a clamping structure with the ratchet grooves 7 on the two plug rods 4;
[0026] The elastic sheet 10 is in a trapezoidal structure, the elastic sheet 10 applies force to the clamping spring rod 9, so that the clamping spring rod 9 always has a movement trend, and the movement trend makes the two ends of the clamping spring rod 9 move out of the notches 6;
[0027] When the switch main body 8 moves in the horizontal direction, the switch main body 8 can push the clamping spring rod 9, so that the two ends of the clamping spring rod 9 move in the direction out of the notches 6, specifically, a thrust inclined surface 11 is arranged on the switch main body 8, a force receiving inclined rod part 12 is arranged on the clamping spring rod 9, and the force receiving inclined rod part 12 abuts against the thrust inclined surface 11;
[0028] A button base 13 is further installed on the headrest rear shell 2, a button 14 is installed on the button base 13, the button 14 is connected with one end of the switch main body 8, and a reset spring 15 is connected between the switch main body 8 and the middle support main body 3.
[0029] In use, the lower parts of the two insertion rods 4 are fixedly installed on the top of the seat backrest, when the headrest is adjusted, the button 14 is pressed, the button 14 pushes the switch main body 8 to move in the left-right horizontal direction, the switch main body 8 moves relative to the middle support main body 3, the reset spring 15 is stretched, the switch main body 8 moves and pushes the force inclined rod part 12 through the pushing force inclined surface 11, since the clamping spring rod 9 can only move in the front-back horizontal direction, the clamping spring rod 9 moves under the pushing of the pushing force inclined surface 11, the clamping spring rod 9 presses the elastic sheet 10, the two ends of the clamping spring rod 9 move out of the notch 6, the two ends of the clamping spring rod 9 are separated from the ratchet groove 7, the ratchet groove 7 of the insertion rod 4 is separated from the clamping spring rod 9, the middle support main body 3 can freely move on the insertion rod 4, and finally the headrest is adjusted, after the adjustment is completed, the button 14 is released, the switch main body 8 is reset under the pulling force of the reset spring 15, the clamping spring rod 9 is reset under the elastic force of the elastic sheet 10, the two ends of the clamping spring rod 9 re-enter the notch 6 and enter the corresponding ratchet groove 7 through the notch 6, the two ends of the clamping spring rod 9 re-form the clamping structure with the ratchet groove 7, so as to realize the locking state of the headrest.
[0030] It should be noted that in this document, such as the term "comprising", "including" or any other variant thereof, is intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices.
[0031] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A headrest height adjustment structure, characterized in that: It includes a headrest main body, a headrest rear shell, and a lifting rod-type adjustment mechanism, wherein the headrest main body is located on the front side of the headrest rear shell; The lifting rod type adjustment mechanism includes a central support body and two rods. The central support body is located inside the headrest rear shell. Rod guide kits are provided on both sides of the central support body. The upper parts of the two rods pass through the two rod guide kits respectively. Notches are also provided on the two rod guide kits. Several ratchet grooves are provided on the upper part of the rods. Two through holes are opened at the bottom of the headrest rear shell for the two rods to pass downwards. The lower part of the main body of the middle support is provided with a slide cavity, and the switch body is provided in the slide cavity. The switch body can move horizontally in the left and right directions in the slide cavity. A snap ring rod and a spring are assembled in the slide cavity. The snap ring rod moves horizontally in the front and back directions. The two ends of the snap ring rod are respectively located at the notches of the two insertion rod guides, and the two ends of the snap ring rod form a locking structure with the ratchet grooves on the two insertion rods. The spring has a trapezoidal structure. The spring applies force to the retaining spring rod, so that the retaining spring rod always has a tendency to move. This tendency to move causes the two ends of the retaining spring rod to move beyond the notch. When the switch body moves horizontally, it can push the snap ring rod, causing both ends of the snap ring rod to move outward beyond the notch.
2. The headrest height adjustment structure according to claim 1, characterized in that: The switch body is provided with a thrust inclined surface, and the snap ring rod is provided with a force-receiving inclined rod part, which abuts against the thrust inclined surface; A button base (13) is also installed on the back shell of the headrest. A button is installed on the button base (13). The button is connected to one end of the switch body. A reset spring is connected between the switch body and the middle bracket body.