Novel manual four-way headrest mechanism

Abstract

The utility model relates to a novel manual four-way headrest mechanism. Comprising a framework shell vertically connected to two headrest rods in a sliding mode, two vertical locking mechanisms installed on the framework shell and connected to the two headrest rods in a clamped mode, and a transverse push rod transversely connected to the interior of the framework shell in a sliding mode and pushing the two vertical locking mechanisms to be unlocked synchronously. The headrest framework shell subassembly is connected to the framework shell in a sliding mode in the front-back direction of the framework shell, the Z-direction locking mechanism is used for locking the headrest framework shell subassembly and the framework shell, and the vertical push rod and the transverse push rod are used for unlocking the Z-direction locking mechanism to push the vertical push rod to move up and down in the framework shell and unlock the Z-direction locking mechanism. The seat headrest has the advantages that a multi-gear adjusting function in the vertical direction, the front direction and the back direction can be achieved, the safety of passengers is guaranteed, meanwhile, the requirements of the passengers for different positions of the seat headrest are met, and good comfortable riding experience is provided for the passengers. The structural design is reasonable and simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle headrests, in particular to a novel manual four-way headrest mechanism. Background Art

[0002] The headrest above the vehicle seat is used to support the head and neck. In order to suit users of different body types and heights, most current headrests can be adjusted in height, and the adjustment can only be made along the pre-set gears on the support rod and can only be adjusted up and down. The adjustment requires both hands or even two people to operate, which is inconvenient to use, and it is difficult to adjust the height to the most comfortable position. The four-way adjustable headrest can be adjusted in the front and back positions compared with the ordinary headrest, and can be adjusted to a more comfortable position. Most of the existing four-way headrests have complex structures, large sizes, inconvenient adjustments, and many restrictions. Summary of the Utility Model

[0003] In view of the above problems, the purpose of the utility model is to provide a novel manual four-way headrest mechanism, which can realize multi-direction and multi-gear adjustment, has a simple structure and good stability, so as to overcome the above-mentioned deficiencies of the prior art.

[0004] A novel manual four-way headrest mechanism provided by the utility model includes: a skeleton shell vertically slidably connected to two headrest rods, two vertical locking mechanisms installed on the skeleton shell and clamped on the two headrest rods, a horizontal push rod horizontally slidably connected inside the skeleton shell and pushing the two vertical locking mechanisms to unlock synchronously, a headrest skeleton shell sub-assembly slidably connected to the skeleton shell in the front-back direction (Z direction) of the skeleton shell, a Z-direction locking mechanism for locking the headrest skeleton shell sub-assembly and the skeleton shell, and a vertical push rod for unlocking the Z-direction locking mechanism. One end of the horizontal push rod is connected to an unlocking button, and the horizontal push rod is pushed to move horizontally through the unlocking button. The horizontal push rod drives the two vertical locking mechanisms to unlock and enables the skeleton shell on the two headrest rods to move up and down to adjust the position. Slope surfaces are provided on the upper end surface of the horizontal push rod and the bottom of the vertical push rod. After the slope surface of the horizontal push rod contacts the slope surface of the vertical push rod, the horizontal push rod pushes the vertical push rod to move up and down in the skeleton shell and unlocks the Z-direction locking mechanism, so that the headrest skeleton shell sub-assembly is adjusted back and forth on the skeleton shell.

[0005] As a preference of the present utility model, the horizontal push rod includes: a horizontal push rod body, two unlocking linkage blocks located on the lower end face of the horizontal push rod body, a ramp surface located on the upper end face of the horizontal push rod body, and a horizontal push rod return spring. The two unlocking linkage blocks are connected to the lock tongues of the two vertical locking mechanisms and drive the lock tongues of the two vertical locking mechanisms to unlock or lock on the lock seat. One end of the horizontal push rod return spring is fixedly connected to the horizontal push rod body, and the other end is fixedly connected to the skeleton housing. The horizontal push rod return spring is used to drive the horizontal push rod body to return to its original position. The ramp surface on the upper end face of the horizontal push rod body contacts the ramp surface at the lower end of the vertical push rod, enabling the horizontal push rod and the vertical push rod to move synchronously.

[0006] As a preference of the present utility model, the vertical locking mechanism includes: a lock seat installed on the skeleton housing, a lock tongue slidably connected inside the lock seat, a lock tongue return spring, and a lock tongue engaging groove formed on the headrest rod. The lock tongue is fixedly connected to the unlocking linkage block of the horizontal push rod, and the unlocking linkage block of the horizontal push rod drives the lock tongue to separate from the lock tongue engaging groove for unlocking. One end of the lock tongue return spring is fixedly connected to the lock seat, and the other end is fixedly connected to the lock tongue. The lock tongue return spring is used to drive the lock tongue to return to its original position.

[0007] As a preference of the present utility model, a horizontal avoidance hole for the horizontal push rod to pass through is formed in the middle of the skeleton housing along the X direction, a Z-direction avoidance hole for the fixing bracket of the headrest skeleton housing sub-assembly to pass through is formed in the upper part of the skeleton housing along the Z direction, and Y-direction avoidance holes for two headrest rods to pass through are formed on both sides of the skeleton housing along the Y direction.

[0008] As a preference of the present utility model, two lower guiding blocks are installed at the positions of the two Y-direction avoidance holes at the bottom of the skeleton housing, and the bottom of the skeleton housing is slidably connected to the two headrest rods through the two lower guiding blocks.

[0009] As a preference of the present utility model, the Z-direction locking mechanism includes: a front and rear sliding plate, a fixing bracket fixedly connected to the headrest skeleton housing sub-assembly, a plurality of locking grooves formed on the lower end face of the fixing bracket, and a vertical push rod return spring. The headrest skeleton housing sub-assembly is slidably connected to the Z-direction avoidance hole of the skeleton housing through the fixing bracket, the fixing bracket is slidably connected to the Z-direction avoidance hole through the front and rear sliding plates, the top of the vertical push rod is clamped in the locking groove on the lower end face of the fixing bracket, the vertical push rod moves up and down under the drive of the horizontal push rod, and the push rod return spring is used to drive the vertical push rod to return to its original position. After the clamping end at the top of the vertical push rod separates from the locking groove, the fixing bracket moves back and forth in the Z-direction avoidance hole of the skeleton housing through the front and rear sliding plates, thereby enabling the headrest skeleton housing sub-assembly to adjust its position back and forth on the skeleton housing.

[0010] As a preference of the present utility model, an unlocking button is provided on one side of the framework housing. The unlocking button includes: a button push plate, a button cover, a button and a button cap. The button cover is fixedly connected to the edge position on one side of the framework housing. The button cap is installed on one side of the button, and the other side of the button passes through the button cover and is fixedly connected to the button push plate. By pressing the button cap, the button cap drives the button to push the button push plate to contact the transverse push rod and drive the transverse push rod to move horizontally.

[0011] The beneficial effects of the present utility model are as follows:

[0012] 1. The headrest of the present utility model can realize the four-way multi-gear adjustment function of up, down, front and back. While ensuring the safety of passengers, it also takes into account the different position requirements of passengers for the seat headrest, providing passengers with a better comfortable riding experience. This structural design is reasonable and simple, and the operation is convenient.

[0013] 2. The manual four-way headrest adjustment mechanism of the present utility model can realize multi-directional multi-gear adjustment, with a simple structure and good stability. Description of the Drawings

[0014] Through the following description with reference to the accompanying drawings, and with a more comprehensive understanding of the present utility model, other objects and results of the present utility model will become more apparent and easier to understand. In the drawings:

[0015] Figure 1 is the overall structural schematic diagram of this embodiment.

[0016] Figure 2 is the overall structural exploded view of this embodiment.

[0017] Figure 3 is the front view of the overall structure of this embodiment.

[0018] Figure 4 is Figure 3 the A-A cross-sectional view of

[0019] Figure 5 is the exploded view of the vertical locking mechanism of the left headrest rod of this embodiment.

[0020] Figure 6 is the exploded view of the vertical locking mechanism of the right headrest rod of this embodiment.

[0021] Figure 7 is the overall structural schematic diagram of the transverse push rod of this embodiment.

[0022] The reference numerals therein include: headrest rod 1, skeleton housing 2, lateral avoidance hole 201, Z-direction avoidance hole 202, Y-direction avoidance hole 203, lower guide block 204, lateral push rod 3, lateral push rod body 301, unlocking linkage block 302, upper slope surface 303, lateral push rod return spring 304, vertical push rod 4, lower slope surface 401, fixed bracket 5, left lock seat 601, left lock tongue 602, left lock tongue return spring 603, right lock seat 701, right lock tongue 702, right lock tongue return spring 703, front and rear sliding plate 801, locking groove 802, vertical push rod return spring 803, button push plate 901, button cover 902, button 903, button cap 904. Detailed implementation mode

[0023] Refer to Figures 1-7 As shown, a novel manual four-way headrest mechanism provided in this embodiment includes: a skeleton housing 2 vertically and slidably connected to two headrest rods 1, two vertical locking mechanisms installed on the skeleton housing 2 and clamped on the two headrest rods 1, a lateral push rod 3 horizontally and slidably connected inside the skeleton housing 1 and used to push the two vertical locking mechanisms to unlock synchronously, a headrest skeleton housing sub-assembly slidably connected to the skeleton housing 2 in the front-rear direction (Z-direction) of the skeleton housing 2, a Z-direction locking mechanism for locking the headrest skeleton housing sub-assembly and the skeleton housing 2, and a vertical push rod 4 for unlocking the Z-direction locking mechanism. One end of the lateral push rod 3 is connected to an unlocking button. By pushing the unlocking button, the lateral push rod 3 moves horizontally, and the lateral push rod 3 drives the two vertical locking mechanisms to unlock and enables the skeleton housing 2 on the two headrest rods 1 to move up and down to adjust the position. The lateral push rod 3 pushes the vertical push rod 4 to move up and down inside the skeleton housing 2 and unlocks the Z-direction locking mechanism, enabling the headrest skeleton housing sub-assembly to be adjusted back and forth on the skeleton housing 2.

[0024] The lateral push rod 3 in this embodiment includes: a lateral push rod body 301, two unlocking linkage blocks 302 located on the lower end surface of the lateral push rod body 301, a slope surface 303 located on the upper end surface of the lateral push rod body 301, and a lateral push rod return spring 304. The two unlocking linkage blocks 302 are connected to the lock tongues of the two vertical locking mechanisms and drive the lock tongues of the two vertical locking mechanisms to unlock or lock on the lock seats. One end of the lateral push rod return spring 304 is fixedly connected to the lateral push rod body 301, and the other end is fixedly connected to the skeleton housing 2. The lateral push rod return spring 304 is used to drive the lateral push rod body 301 to automatically return after unlocking. The upper slope surface 303 on the upper end surface of the lateral push rod body 301 contacts the lower slope surface 401 at the lower end of the vertical push rod 4. The two slope surfaces can convert the horizontal movement of the lateral push rod body 301 into the vertical movement of the vertical push rod 4, enabling the lateral push rod 3 and the vertical push rod 4 to act synchronously.

[0025] In the framework housing 2 of this embodiment, a transverse avoidance hole 201 for the transverse push rod 3 to pass through is provided in the middle along the X (horizontal) direction, a Z-direction avoidance hole 202 for the fixing bracket of the headrest framework housing sub-assembly to pass through is provided in the upper part of the framework housing 2 along the Z (front and back) direction, and Y-direction avoidance holes 203 for two headrest rods 1 to pass through are provided on both sides of the framework housing 2 along the Y (vertical) direction. At the positions of the two Y-direction avoidance holes 203 at the bottom of the framework housing 2, two lower guide blocks 204 are installed, and the bottom of the framework housing 2 is slidably connected to the two headrest rods 1 through the two lower guide blocks 204.

[0026] The two vertical locking mechanisms in this embodiment are divided into a left headrest rod vertical locking mechanism and a right headrest rod vertical locking mechanism. The left headrest rod vertical locking mechanism is used to lock the left headrest rod 1. The left headrest rod vertical locking mechanism includes: a left lock seat 601 fixedly connected to the framework housing 2, a left lock tongue 602 slidably connected horizontally inside the left lock seat 601, two left lock tongue return springs 603 installed on the left lock seat 601, and three lock tongue engaging grooves (not shown) provided on the left headrest rod 1. The left lock tongue return spring 603 is used for the return of the left lock tongue 602 after unlocking. A engaging port for engaging with the unlocking linkage block 302 is provided on the upper end surface of the left lock tongue 602. The transverse push rod body 301 drives the left lock tongue 602 to move horizontally through the unlocking linkage block 302, so that the left lock tongue 602 is separated from the lock tongue engaging groove, realizing the unlocking of the left headrest rod vertical locking mechanism. The right headrest rod vertical locking mechanism is used to lock the right headrest rod 1. The right headrest rod vertical locking mechanism includes: a right lock seat 701 fixedly connected to the framework housing 2, a right lock tongue 702 slidably connected horizontally inside the right lock seat 701, two right lock tongue return springs 703 installed on the right lock seat 701, and three lock tongue engaging grooves (not shown) provided on the right headrest rod 1. The right lock tongue return spring 703 is used for the return of the right lock tongue 702 after unlocking. A engaging port for engaging with the unlocking linkage block 302 is provided on the upper end surface of the right lock tongue 702. The transverse push rod body 301 drives the right lock tongue 702 to move horizontally through the unlocking linkage block 302, so that the right lock tongue 702 is separated from the lock tongue engaging groove, realizing the unlocking of the right headrest rod vertical locking mechanism. Since the transverse push rod 3 can synchronously push the right headrest rod vertical locking mechanism and the left headrest rod vertical locking mechanism to unlock synchronously, the unlocked framework housing 2 can move up and down, thereby realizing the up and down adjustment of the headrest.

[0027] In this embodiment, the headrest skeleton housing sub-assembly and the skeleton housing 2 achieve the front-back movement of the headrest skeleton housing sub-assembly through the fixing bracket 5. The fixing bracket 5 is provided with positioning holes. The headrest skeleton housing sub-assembly is installed on the fixing bracket 5 through the snap-in positioning posts. The fixing bracket 5 is slidably connected in the Z-direction relief hole 202 of the skeleton housing 2. The fixing bracket 5 is slidably connected in the Z-direction relief hole 202 through the front-back sliding plate;

[0028] The Z-direction locking mechanism in this embodiment includes: the front-back sliding plate 801, the fixing bracket 5 fixedly connected to the headrest skeleton housing sub-assembly, a plurality of locking grooves 802 opened on the lower end surface of the fixing bracket 5, and the vertical push rod return spring 803. The fixing bracket 5 is slidably connected in the Z-direction relief hole 202 through the front-back sliding plate 801. The front-back sliding plate 801 is a guide block inclined downward. The top of the fixing bracket 5 contacts the upper end surface of the Z-direction relief hole 202 through the front-back sliding plate 801. The top of the vertical push rod 4 is snap-fitted in the locking groove 802 on the lower end surface of the fixing bracket 5. The vertical push rod 4 moves up and down under the drive of the horizontal push rod 3. The push rod return spring 803 is used to drive the vertical push rod 4 to return. Among them, the upper ramp surface 303 of the horizontal push rod 3 is in full contact with the lower ramp surface 401 of the vertical push rod 4. When the horizontal push rod 3 moves to the left to unlock the two vertical locking mechanisms, the lower ramp surface 401 of the vertical push rod 4 begins to descend along the upper ramp surface 303, and the vertical push rod 4 begins to fall. After falling, the snap-fitting end at the top of the vertical push rod 4 is separated from the locking groove of the fixing bracket 5, realizing the unlocking of the fixing bracket 5. After unlocking, the fixing bracket 5 can move back and forth in the Z-direction relief hole 202, and the front-back movement of the headrest skeleton housing sub-assembly can be realized, thereby realizing the front-back adjustment of the position of the headrest. Among them, the length of the front-back sliding plate 801 is the stroke of the front-back adjustment of the headrest skeleton housing sub-assembly.

[0029] On one side of the skeleton housing 2 in this embodiment, an unlocking button is provided. The unlocking button includes: a button push plate 901, a button cover 902, a button 903, and a button cap 904. The button cover 902 is fixedly connected to the edge position on one side of the skeleton housing 1. The button cap 904 is installed on one side of the button 903. The other side of the button 903 passes through the button cover 902 and is fixedly connected to the button push plate 901. By pressing the button cap 904, the button cap 904 drives the button push plate 901 to contact the horizontal push rod 3 through the button 903 and drives the horizontal push rod 3 to move horizontally, realizing the synchronous unlocking of the vertical locking mechanism and the Z-direction locking mechanism.

[0030] Working principle: Press the unlocking button on the side of the skeleton housing 2. The unlocking button pushes the horizontal cross bar 3 to move along the Y direction (horizontal direction). While the horizontal cross bar moves in the Y direction, it drives the lock tongues of the vertical locking mechanisms on both the left and right sides to separate from the lock tongue engaging grooves, unlocking the headrest rods 1 on both sides. The headrest rods 1 on both sides can be adjusted up and down. While the horizontal cross bar moves in the Y direction, it drives the vertical push rod 4 to separate from the locking groove 802, unlocking the fixed bracket 5, enabling the overall sub-assembly of the headrest skeleton housing to be adjusted back and forth. Release the pressing force of the button cap, and under the action of internal stress, the adjustment mechanism returns to the locked state.

[0031] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A novel manual four-way headrest mechanism, characterized in that, Comprising: A skeleton housing vertically slidably connected to two headrest rods, two vertical locking mechanisms mounted on the skeleton housing and clamped to the two headrest rods, a transverse push rod horizontally slidably connected inside the skeleton housing and pushing the two vertical locking mechanisms to unlock synchronously, a headrest skeleton housing sub-assembly slidably connected to the skeleton housing in the front-back direction of the skeleton housing, a Z-direction locking mechanism for locking the headrest skeleton housing sub-assembly and the skeleton housing, and a vertical push rod for unlocking the Z-direction locking mechanism. One end of the transverse push rod is connected to an unlocking button, and the transverse push rod is pushed to move horizontally by the unlocking button. The transverse push rod drives the two vertical locking mechanisms to unlock and enables the skeleton housing on the two headrest rods to move up and down to adjust the position. A ramp surface is provided on the upper end surface of the transverse push rod and the bottom of the vertical push rod. After the ramp surface of the transverse push rod contacts the ramp surface of the vertical push rod, the transverse push rod pushes the vertical push rod to move up and down in the skeleton housing and unlocks the Z-direction locking mechanism, so that the headrest skeleton housing sub-assembly adjusts the position back and forth on the skeleton housing.

2. The novel manual four-way headrest mechanism according to claim 1, characterized in that, The transverse push rod includes: a transverse push rod body, two unlocking linkage blocks located on the lower end surface of the transverse push rod body, a ramp surface located on the upper end surface of the transverse push rod body, and a transverse push rod return spring. The two unlocking linkage blocks are connected to the locking tongues of the two vertical locking mechanisms and drive the locking tongues of the two vertical locking mechanisms to unlock or lock on the lock seats. One end of the transverse push rod return spring is fixedly connected to the transverse push rod body, and the other end is fixedly connected to the skeleton housing. The transverse push rod return spring is used to drive the transverse push rod body to return. The ramp surface on the upper end surface of the transverse push rod body contacts the ramp surface at the lower end of the vertical push rod, enabling the transverse push rod and the vertical push rod to act synchronously.

3. A novel manual four-way headrest mechanism according to claim 1, characterized in that, The vertical locking mechanism includes: a lock seat mounted on the skeleton housing, a locking tongue slidably connected inside the lock seat, a locking tongue return spring, and a locking tongue clamping groove opened on the headrest rod. The locking tongue is fixedly connected to the unlocking linkage block of the transverse push rod, and the locking tongue is driven by the unlocking linkage block of the transverse push rod to separate from the locking tongue clamping groove to unlock. One end of the locking tongue return spring is fixedly connected to the lock seat, and the other end is fixedly connected to the locking tongue. The locking tongue return spring is used to drive the locking tongue to return.

4. A novel manual four-way headrest mechanism according to claim 1, characterized in that, A transverse avoidance hole for the transverse push rod to pass through is opened in the middle of the skeleton housing in the X direction, a Z-direction avoidance hole for the fixing bracket of the headrest skeleton housing sub-assembly to pass through is opened in the upper part of the skeleton housing in the Z direction, and Y-direction avoidance holes for the two headrest rods to pass through are opened on both sides of the skeleton housing in the Y direction.

5. A novel manual four-way headrest mechanism according to claim 1, characterized in that, Two lower guide blocks are installed at the bottom of the skeleton housing at the positions of the two Y-direction avoidance holes, and the bottom of the skeleton housing is slidably connected to the two headrest rods through the two lower guide blocks.

6. A novel manual four-way headrest mechanism according to claim 1, characterized in that, The Z-direction locking mechanism includes: a front and rear sliding plate, a fixed bracket fixedly connected to the headrest skeleton housing sub-assembly, a plurality of locking grooves formed on the lower end surface of the fixed bracket, and a vertical push rod return spring. The headrest skeleton housing sub-assembly is slidably connected to the Z-direction avoidance hole of the skeleton housing through the fixed bracket. The fixed bracket is slidably connected to the Z-direction avoidance hole through the front and rear sliding plates. The top of the vertical push rod is clamped in the locking groove on the lower end surface of the fixed bracket. The vertical push rod moves up and down under the drive of the horizontal push rod. The push rod return spring is used to drive the vertical push rod to return to its original position. After the clamping end at the top of the vertical push rod is separated from the locking groove, the fixed bracket moves back and forth in the Z-direction avoidance hole of the skeleton housing through the front and rear sliding plates, so as to adjust the position of the headrest skeleton housing sub-assembly back and forth on the skeleton housing.

7. A novel manual four-way headrest mechanism according to claim 1, characterized in that, An unlocking button is provided on one side of the skeleton housing. The unlocking button includes: a button push plate, a button cover, a button and a button cap. The button cover is fixedly connected to the edge position on one side of the skeleton housing. The button cap is installed on one side of the button. The other side of the button passes through the button cover and is fixedly connected to the button push plate. By pressing the button cap, the button cap drives the button to push the button push plate into contact with the horizontal push rod and drives the horizontal push rod to move horizontally.

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