Headrest electric vertical angle adjustment driving mechanism
The electric vertical angle adjustment drive mechanism for the headrest uses a combination of electric mechanism and lead screw to achieve precise adjustment of the headrest, solving the problems of inaccurate adjustment and difficult operation of traditional headrests, and improving passenger comfort and safety.
Patent Information
- Application Number
- CN202520484903.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Traditional car seat headrests are not precise in height and vertical angle adjustment, are difficult to operate and are prone to jamming, failing to meet the comfort needs of passengers.
The headrest adopts an electric vertical angle adjustment drive mechanism. By combining an electric mechanism, a lead screw, a nut, and a push block, the headrest can be precisely adjusted in angle and height. The electric mechanism drives the lead screw to rotate, which is converted into the linear motion of the nut. The push block pushes the headrest to rotate around the hinge point, thus achieving the angle adjustment required by the passenger.
It enables precise adjustment of the headrest angle and height, improving passenger comfort, avoiding operational difficulties and jamming issues, and ensuring safety.
Smart Images
Figure CN223835474U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seat technology, and in particular to an electric vertical angle adjustment drive mechanism for a headrest. Background Technology
[0002] Traditional car seat headrests are manually adjustable in height and vertical angle, which has the following problems:
[0003] First, the headrest height and vertical angle are both non-linearly adjustable. There are only a few rated height settings for both the height and vertical angle, making it difficult to accurately position the headrest according to the passenger's specific sitting height and thus failing to provide perfect comfort.
[0004] Secondly, the height adjustment function is difficult to operate manually. The headrests of various car models are relatively difficult to adjust. Due to the imbalance of the internal locking mechanism and the installation error of the guide rail, they are prone to jamming. It is necessary to shake them and then pull them out or press them down with considerable force to adjust them. Moreover, it cannot be adjusted when the passenger is sitting, and it is even more difficult to match them to the right position, requiring multiple adjustments.
[0005] Finally, the internal structure for vertical angle adjustment is generally a cyclic ratchet mechanism, which can only be adjusted in one direction. If it is not adjusted properly, it has to be started all over again. Moreover, it is easy to get stuck and unable to reset when resetting at a high position. Utility Model Content
[0006] The technical problem to be solved by this utility model is to provide a headrest electric vertical angle adjustment drive mechanism to address the aforementioned technical problems existing in the traditional automotive seat headrest electric vertical angle adjustment drive mechanism, so as to solve the various problems existing in the prior art.
[0007] The technical problem to be solved by this utility model can be achieved through the following technical solution:
[0008] A headrest electric vertical angle adjustment drive mechanism includes:
[0009] Headrest support components installed on seats;
[0010] A headrest sliding component that is slidably disposed on the headrest support component;
[0011] A headrest hinged to the headrest sliding component;
[0012] A headrest lifting and adjusting mechanism, wherein the fixed side of the headrest lifting and adjusting mechanism is mounted on the headrest support component, and the driving side of the headrest lifting and adjusting mechanism is drivenly connected to the headrest sliding component, driving the headrest sliding component to slide up and down along the headrest support component;
[0013] A headrest vertical angle adjustment mechanism, wherein the fixed side of the headrest vertical angle adjustment mechanism is mounted on the headrest sliding component, and the driving side of the headrest vertical angle adjustment mechanism is driven to drive the headrest to rotate around the hinge point between the headrest and the headrest sliding component; characterized in that:
[0014] The headrest vertical angle adjustment mechanism is a headrest vertical angle electric lead screw adjustment mechanism, which includes an electric mechanism, a lead screw, a nut, and a push block. The electric mechanism is installed at the bottom of the headrest sliding component and is drivenly connected to the lead screw. The nut is screwed on the lead screw and is drivenly connected to the push block, which moves the push block back and forth. The push block is hinged to the headrest, pushing the headrest to flip around its hinge point with the headrest sliding component.
[0015] In a preferred embodiment of this utility model, the push block has an inclined groove, and the nut is provided with a push rod that passes through the inclined groove; the rotational movement of the lead screw is converted into the up-and-down movement of the nut, and the movement of the push rod and the inclined groove is converted into the forward-and-backward movement of the push block, thereby pushing the headrest to flip around the hinge point between itself and the sliding component of the headrest.
[0016] In a preferred embodiment of the present invention, a groove is provided in the headrest sliding component, and the push block is slidably embedded in the groove.
[0017] In a preferred embodiment of this invention, the lead screw is parallel to the occupant's head.
[0018] Due to the adoption of the above technical solution, the electric vertical angle adjustment drive mechanism of this utility model allows the headrest and the headrest sliding component to be connected by a hinge at the top, enabling rotational movement. The electric mechanism is installed at the bottom of the headrest sliding component. The rotational motion of the output screw of the headrest sliding component, combined with the screw nut that is stopped by the guide groove in the headrest sliding component, outputs vertical linear motion. The vertical linear motion of the screw nut is connected to the inclined groove in the push block through the push rod. The push block moves horizontally in the guide groove of the headrest sliding component due to the motion component of its own inclined groove and the screw nut, and pushes the headrest to rotate around its hinge point with the headrest sliding component to achieve the angle required by the passenger.
[0019] The electric vertical angle adjustment drive mechanism for the headrest used in this invention has a lead screw parallel to the head, which effectively avoids the risk of injury caused by a sudden impact when the lead screw is perpendicular to the passenger's head during vehicle movement. Attached Figure Description
[0020] Figure 1 This is one of the side views of a headrest equipped with the electric vertical angle adjustment drive mechanism of this utility model.
[0021] Figure 2 This is a second side view of a headrest equipped with the electric vertical angle adjustment drive mechanism of this utility model.
[0022] Figure 3 The third side view of a headrest equipped with the electric vertical angle adjustment drive mechanism of this utility model.
[0023] Figure 4 The third side view of a headrest equipped with the electric vertical angle adjustment drive mechanism of this utility model.
[0024] Figure 5 This is one of the installation diagrams for the electric lead screw adjustment mechanism for the vertical angle of the headrest.
[0025] Figure 6 This is the second schematic diagram of the installation of the electric lead screw adjustment mechanism for the vertical angle of the headrest.
[0026] Figure 7 This is an exploded view of the electric lead screw adjustment mechanism for the vertical angle of the headrest. Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0028] See Figures 1 to 7 The headrest electric vertical angle adjustment drive mechanism shown in the figure includes: a headrest support component 100, a headrest sliding component 200, a headrest 300, a headrest lifting adjustment mechanism, and a headrest vertical angle adjustment mechanism.
[0029] A headrest support component 100 is mounted on a seat (not shown in the figure), and a headrest sliding component 200 is slidably disposed on the headrest support component 100. For example, a slider is mounted on the headrest sliding component 200, and a slide rail is mounted on the headrest support component 100, allowing the slider to move up and down on the slide rail. Additionally, a guide rod is mounted on the headrest support component 100, and a guide sleeve is mounted on the headrest sliding component 200. The guide sleeve fits onto the guide rod and moves up and down along the guide rod. The guide rod and guide sleeve can also restrict the circumferential rotation of the headrest sliding component 200, allowing only axial up and down movement.
[0030] The headrest sliding component 200 moves up and down driven by the headrest lifting adjustment mechanism 500. The top of the headrest 300 is hinged to the top of the headrest sliding component 200 and its angle is adjusted by the headrest vertical angle adjustment mechanism.
[0031] The headrest's electric vertical angle adjustment drive mechanism is a headrest vertical angle electric lead screw adjustment mechanism 400, which includes an electric mechanism 410, a lead screw 420, a nut 430, and a push block 440.
[0032] The electric mechanism 410 is installed at the bottom of the headrest sliding component and is driven by the lead screw 420, which is parallel to the occupant's head.
[0033] A slide groove 210 is provided in the headrest sliding component 200. The slide groove 210 extends along the direction perpendicular to the occupant's head, and the push block 440 slides into the slide groove 210.
[0034] Nut 430 is screwed onto lead screw 420. Nut guide groove 220 is provided in headrest sliding component 200. Nut 430 is slidably disposed in nut guide groove 220. Nut guide groove 220 guides the linear movement of nut 430 and restricts the rotation of nut 430.
[0035] The push block 440 is hinged to the headrest 300. The push block 440 has a groove 441, and a push rod 450 is provided on the nut 430. The push rod 450 passes through the groove 441. In this way, the rotational movement of the lead screw 420 is converted into the up-and-down movement of the nut 430. Through the push rod 450 and the groove 441, it is converted into the back-and-forth movement of the push block 440. In turn, the push block 440 pushes the headrest 300 to rotate around its hinge point with the headrest sliding component 200 to achieve the angle required by the passenger.
Claims
1. A headrest electric vertical angle adjustment drive mechanism, comprising: Headrest support components installed on seats; A headrest sliding component that is slidably disposed on the headrest support component; A headrest hinged to the headrest sliding component; A headrest lifting and adjusting mechanism, wherein the fixed side of the headrest lifting and adjusting mechanism is mounted on the headrest support component, and the driving side of the headrest lifting and adjusting mechanism is drivenly connected to the headrest sliding component, driving the headrest sliding component to slide up and down along the headrest support component; A headrest vertical angle adjustment mechanism, wherein the fixed side of the headrest vertical angle adjustment mechanism is mounted on the headrest sliding component, and the driving side of the headrest vertical angle adjustment mechanism is driven to drive the headrest to rotate around the hinge point between the headrest and the headrest sliding component; characterized in that: The headrest vertical angle adjustment mechanism is a headrest vertical angle electric lead screw adjustment mechanism, which includes an electric mechanism, a lead screw, a nut, and a push block. The electric mechanism is installed at the bottom of the headrest sliding component and is drivenly connected to the lead screw. The nut is screwed on the lead screw and is drivenly connected to the push block, which moves the push block back and forth. The push block is hinged to the headrest, pushing the headrest to flip around its hinge point with the headrest sliding component.
2. The electric vertical angle adjustment drive mechanism for a headrest according to claim 1, characterized in that, The push block has an inclined groove, and the nut has a push rod that passes through the inclined groove. The rotational movement of the lead screw is converted into the up-and-down movement of the nut. The movement of the push rod and the inclined groove is converted into the forward and backward movement of the push block, which pushes the headrest to flip around the hinge point between the headrest and the sliding component.
3. A headrest electric vertical angle adjustment drive mechanism according to claim 1 or 2, characterized in that, A sliding groove is provided inside the headrest sliding component, and the push block slides into the sliding groove.
4. A headrest electric vertical angle adjustment drive mechanism according to claim 1 or 2, characterized in that, The lead screw is parallel to the occupant's head.