Folding headrest mechanism with unlocking and resetting functions and unlocking and resetting device thereof
By designing a folding headrest mechanism with unlocking and reset functions, the problems of complex structure and inability to automatically reset in traditional folding headrests are solved, achieving automatic unlocking and reset, and improving comfort and installation stability.
Patent Information
- Application Number
- CN202520937995.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-05-13
AI Technical Summary
Traditional folding headrests have complex structures, require high processing precision, and need independent connecting structures to connect with the front and back covers. Furthermore, the headrests cannot automatically return to their original position after folding, resulting in poor comfort.
A folding headrest mechanism with unlocking and resetting functions was designed, including a folding mechanism and a resetting mechanism. Automatic unlocking is achieved by using a folding torsion spring, a pressing torsion spring and an unlocking cable, and automatic resetting is achieved by using a resetting cable. The design of the positioning notch and locking block simplifies the installation process.
It enables automatic unlocking and resetting of the headrest, simplifies the installation process, improves comfort and installation stability, and meets the functional requirements of car seats.
Smart Images
Figure CN223850482U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of automobile accessories, and particularly relates to a folding headrest mechanism with unlocking and resetting functions and an unlocking and resetting device thereof. BACKGROUND
[0002] The headrest of an automobile seat is an indispensable accessory of the automobile seat. In the early stage, the headrest was mainly used to improve the riding comfort. With the continuous development of the automobile industry, people have higher and higher requirements for the functionality of automobiles. The folding headrest can be folded when the co-driver seat is not occupied, thereby reducing the rear blind area and expanding the field of vision of the rear passengers to a certain extent. In addition, when self-driving camping is needed, the seat can be flattened and the headrest can be folded to form a bed car, thereby improving the space optimization performance of the automobile cabin. Therefore, the requirements for the folding headrest of the automobile seat are also getting higher and higher.
[0003] However, the traditional folding headrest has a complex structure and high machining precision requirement, and needs to be connected with the front cover and the rear cover by an independent connecting structure (for example, by screwing). INVENTION CONTENTS
[0004] The utility model aims at solving the technical problems existing in the prior art and particularly innovatively provides a folding headrest mechanism with unlocking and resetting functions and an unlocking and resetting device thereof, which can automatically unlock and reset and improve the comfort.
[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model provides an unlocking and resetting device of a folding headrest, which is suitable for a folding headrest with an "n"-type headrest rod and comprises a folding mechanism and a resetting mechanism installed in a headrest shell. The folding mechanism comprises, from top to bottom, a pressing block, a locking block and a fixed block, the fixed block is fixedly connected to a crossbar of the "n"-type headrest rod, the folding mechanism further comprises a mounting bracket sleeved on the crossbar, the mounting bracket is used for fixedly connecting with the headrest shell, a folding torsional spring is sleeved on the crossbar, the two ends of the folding torsional spring are respectively abutted against the mounting bracket and the fixed block, and the folding torsional spring provides a reverse pushing force for the mounting bracket to turn forward in an unlocked state. The pressing block and the locking block are rotatably installed on the mounting bracket through a rotating shaft, the pressing block is used for pressing the locking block against the fixed block, a pressing torsional spring is sleeved on the rotating shaft corresponding to the pressing block, the two ends of the pressing torsional spring are respectively abutted against the mounting bracket and the pressing block, and the pressing torsional spring drives the pressing block and the locking block to be pressed against the fixed block to realize locking.
[0006] The folding mechanism is equipped with an unlocking cable, the end of the unlocking cable is connected with the pressing block, the middle part of the cable sleeve of the unlocking cable is fixed above the pressing block, so that the pressing block can be driven by the unlocking cable to rotate upward, thereby releasing the locking block and achieving unlocking.
[0007] The reset mechanism comprises a reset cable, one end of the reset cable is fixed in the headrest shell, and the other end is located outside the headrest shell and drives the headrest shell to flip back for resetting.
[0008] In the above scheme: the fixed block is provided with a to-position notch, the locking block is provided with a protruding block for being clamped in the to-position notch, and the to-position is locked by being pressed in the locking notch through a pressing torsional spring.
[0009] In the above scheme: the to-position notch is arranged on the rear side of the top of the fixed block, and the to-position notch is a trapezoidal shape with an increasing opening, which facilitates the entry of the protruding block and the sliding out of the protruding block during unlocking.
[0010] In the above scheme: the end of the unlocking cable is provided with an anti-drop block, and the pressing block is provided with a clamping hole for clamping the anti-drop block, so that the end of the unlocking cable can be directly inserted into the clamping hole, and the installation is convenient.
[0011] The utility model also provides a folding headrest mechanism with unlocking and resetting functions, which comprises a headrest shell and a pair of left and right spaced headrest rods, a horizontal rod is connected between the pair of headrest rods, the upper parts of the horizontal rod and the headrest rods are located in the headrest shell, the unlocking and resetting device of the folding headrest in the above scheme is comprised, a through hole for the horizontal rod to pass through is arranged on the folding mechanism, positioning frames for clamping the folding mechanism are arranged on the inner sides of the front cover and the rear cover corresponding to the mounting frames of the folding mechanism, and the folding mechanism is clamped in the positioning frames through the positioning frames on the front and rear sides;
[0012] A unlocking cable fixing point is arranged on the front cover corresponding to the middle part of the cable sleeve of the unlocking cable, a reset cable lock head fixing point for fixing the lock head of the reset cable is arranged on the front cover, and a reset cable fixing point for fixing the cable sleeve of the reset cable is arranged on the headrest rod.
[0013] In the above scheme: the end of the steel wire of the reset cable is provided with a clamping block, and a clamping groove for clamping the clamping block is arranged on the reset cable lock head fixing point. The installation is convenient, and the clamping block only needs to be clamped.
[0014] In the above scheme: a pair of clamping rods for clamping the horizontal rod are arranged on the inner sides of the front cover and the rear cover in a left and right spaced manner, the clamping rods of the front cover and the rear cover are arranged in front of and behind each other, a clamping ring for clamping the horizontal rod is formed through the clamping rods arranged in front of and behind each other, the installation is stable, and the needs of rotating and folding the front cover and the rear cover are met.
[0015] In the above scheme: the unlocking cable and the reset cable are respectively drawn out from the headrest rod on both sides, and the ends of the unlocking cable and the reset cable are provided with motors, and the corresponding ropes are pulled by the motors. The motor is adjusted, which is convenient to adjust, and is drawn out from the headrest rod, which saves space and can avoid the influence of other components on the installation of the unlocking cable and the reset cable.
[0016] In the above scheme: the headrest rod is further provided with a roller for being padded below the reset cable steel wire, the headrest rod is provided with a pair of roller ears for mounting the roller, and the roller shafts of the roller are respectively mounted on the roller ears on the left and right sides.
[0017] In summary, due to the adoption of the above technical scheme, the utility model has the beneficial effects that: the folding mechanism can stably drive the headrest shell to rotate to the front side or be locked in the initial state. The unlocking cable can drive the bottom end of the pressing block to rotate away from the locking block, so that the fixing block can push the locking block out under the action of the folding torsion spring, thereby realizing unlocking. The reset cable can pull the headrest shell to rotate to the rear side, thereby realizing the reset of the headrest shell. In combination with the to-position gap and the protrusion on the locking block, the reset can be realized. The positioning frame can directly clamp the folding mechanism, thereby realizing the installation of the folding mechanism without other connecting structures or fixing devices, which is convenient and fast to install. BRIEF DESCRIPTION OF DRAWINGS
[0018] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:
[0019] Figure 1 is the schematic diagram of the explosion of the utility model.
[0020] Figure 2 is the schematic diagram of the front shell, the folding mechanism and the reset mechanism.
[0021] Figure 3 is the schematic diagram of the rear shell.
[0022] Figure 4 is the schematic diagram of the initial state of the headrest.
[0023] Figure 5 is the schematic diagram of the folded headrest. DETAILED DESCRIPTION
[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0025] like Figures 1-5 As shown, a folding headrest mechanism with unlocking and reset functions includes a headrest housing and a pair of headrest rods 8 spaced apart on the left and right. A crossbar 801 connects the pair of headrest rods 8. The upper parts of the crossbar 801 and the headrest rods 8 are both located inside the headrest housing. A pair of clips for locking onto the crossbar 801 are spaced apart on the inner sides of the front cover 1 and the rear cover 2. The clips a of the front cover 1 and the rear cover 2 are arranged in a front-to-back correspondence, and the front-to-back clips a form a retaining ring for locking the crossbar 801, which ensures stable installation and meets the requirements for rotating and folding the front cover 1 and the rear cover 2.
[0026] It also includes a folding mechanism 3 and a reset mechanism installed inside the headrest housing. The front cover 1 and the rear cover 2 of the headrest housing are both provided with positioning grooves for installing the folding mechanism 3, and the folding mechanism 3 is installed inside through the positioning grooves on the front and rear sides.
[0027] The folding mechanism 3 includes a pressing block 304, a locking block 305, and a fixing block 306 arranged sequentially from top to bottom. The fixing block 306 is fixedly connected to the crossbar 801 of the "n"-shaped headrest rod 8. The folding mechanism 3 also includes a mounting bracket 310 rotatably mounted on the crossbar 801. The mounting bracket 310 has a through hole through which the crossbar 801 passes, allowing the mounting bracket 310 to be rotatably connected to the crossbar 801. The mounting bracket 310 is used to fixally connect to the headrest housing, and a folding torsion spring 307 is sleeved on the crossbar 801. The two ends of the folding torsion spring 307 abut against the mounting bracket 310 and the fixing block 306 respectively, and in the unlocked state, the folding torsion spring 307 provides a spring force to push the mounting bracket 310 forward and flip it over.
[0028] The locking block 305 and the pressing block 304 are rotatably installed on the mounting frame 310 through rotating shafts, and the pressing block 304 is used to press the locking block 305 against the fixed block 306. A pressing torsion spring 308 is sleeved on the rotating shaft corresponding to the pressing block 304, the two ends of the pressing torsion spring 308 are respectively abutted against the mounting frame 310 and the pressing block 304, and the pressing torsion spring 308 drives the pressing block 304 and the locking block 305 to be pressed against the fixed block 306, so as to realize locking. The fixed block 306 is provided with a to-position gap 309, and the part of the locking block 305 used to be pressed against the fixed block 306 is provided with a protruding block used to be clamped in the to-position gap 309, and the to-position locking is realized by pressing the protruding block in the locking gap through the pressing torsion spring 308. The to-position gap 309 is arranged on the rear side of the top of the fixed block 306, and the to-position gap 309 is a trapezoidal gap with an increasing opening, so that the protruding block is facilitated to enter and slide out when unlocking.
[0029] The folding mechanism 3 is provided with an unlocking cable 4, and the end of the rope of the unlocking cable 4 is connected with the pressing block 304. The middle part of the cable sleeve of the unlocking cable 4 is fixed above the pressing block 304, so that the unlocking cable 4 can drive the pressing block 304 to rotate upward, thereby loosening the locking block 305 and realizing unlocking. The end of the rope of the unlocking cable 4 is provided with an anti-dropping block, and the pressing block 304 is provided with a clamping hole 303 used to clamp the anti-dropping block, so that the end of the rope of the unlocking cable 4 can be directly inserted into the clamping hole 303, and the installation is convenient.
[0030] The reset mechanism includes a reset cable 5, one end of the rope of the reset cable 5 is fixed in the headrest shell, and the other end is located outside the headrest shell and drives the headrest shell to flip back for resetting through the reset cable 5.
[0031] The front cover 1 is provided with an unlocking cable fixing point 102 corresponding to the middle part of the cable sleeve of the unlocking cable 4, the headrest rod 8 is a hollow pipe, the inner sides of the front cover 1 and the rear cover 2 are both provided with a positioning frame b corresponding to the mounting frame 310 of the folding mechanism 3, and the folding mechanism 3 is clamped in the positioning frame b through the positioning frames b on the front and rear sides; the positioning frame b is provided with a through hole through which the unlocking cable 4 passes;
[0032] The front cover 1 is provided with a reset cable lock head fixing point 101 used to fix the lock head of the reset cable 5, and the headrest rod 8 is provided with a reset cable 5 fixing point 302 used to fix the cable sleeve of the reset cable 5. The end of the steel wire of the reset cable 5 is provided with a clamping block, and the reset cable lock head fixing point 101 is provided with a clamping groove used to clamp the clamping block. The installation is convenient, and the clamping block only needs to be clamped.
[0033] The headrest rods 8 are all hollow, the unlocking cables 4 and the reset cables 5 are respectively pulled out from the inside of the headrest rods 8 on both sides, space is saved, meanwhile, other components can not affect the installation of the unlocking cables 4 and the reset cables 5. And the ends of the ropes of the unlocking cables 4 and the reset cables 5 are all provided with motors, and the corresponding ropes are pulled by the motors, motor adjustment is adopted, and adjustment is convenient.
[0034] In order to improve the reset efficiency of the reset cable 5, the headrest rod 8 is further provided with a roller 7 used for being padded below the steel wire of the reset cable 5. Correspondingly, the headrest rod 8 is provided with a pair of roller supporting ears 301 used for installing the roller 7, the roller supporting ears 301 are respectively located on the left and right sides of the roller 7, and the roller shafts 6 of the roller 7 are respectively installed on the roller supporting ears 301 on the left and right sides.
Claims
1. An unlocking and resetting device for a folding headrest, characterized in that: The application is suitable for folding headrest with "n" type headrest rod (8), comprising folding mechanism (3) and reset mechanism installed in headrest shell; the folding mechanism (3) comprises pressing block (304), locking block (305) and fixed block (306) arranged from top to bottom in sequence, the fixed block (306) is fixedly connected on the horizontal rod (801) of the "n" type headrest rod (8), the folding mechanism (3) further comprises mounting frame (310) sleeved on the horizontal rod (801), the mounting frame (310) is used for fixedly connecting with the headrest shell, and the horizontal rod (801) is sleeved with folding torsion spring (307), the both ends of the folding torsion spring (307) are respectively abutted on the mounting frame (310) and the fixed block (306), and the folding torsion spring (307) can provide reverse pushing force to the mounting frame (310) to turn forward in the unlocked state, the locking block (305) and the pressing block (304) are both rotatably installed on the mounting frame (310) through rotating shaft, the pressing block (304) is used for pressing the locking block (305) on the fixed block (306), and the corresponding rotating shaft of the pressing block (304) is sleeved with pressing torsion spring (308), the both ends of the pressing torsion spring (308) are respectively abutted on the mounting frame (310) and the pressing block (304), and the pressing block (304) and the locking block (305) are pressed on the fixed block (306) through the pressing torsion spring (308), so as to realize locking; The folding mechanism (3) is provided with unlocking cable (4), the end of the rope of the unlocking cable (4) is connected with the pressing block (304), the middle of the cable sleeve of the unlocking cable (4) is fixed above the pressing block (304), so that the unlocking cable (4) can drive the pressing block (304) to rotate upward, thereby releasing the locking block (305) to realize unlocking; The reset mechanism comprises reset cable (5), one end of the rope of the reset cable (5) is fixed in the headrest shell, and the other end is located outside the headrest shell, and the headrest shell is turned back to reset through the reset cable (5).
2. The unlocking and resetting device of the folding headrest according to claim 1, characterized in that: The fixed block (306) is provided with in-place notch (309), the locking block (305) is provided with protruding block for being clamped in the in-place notch (309), and the in-place notch (309) is clamped in the locking notch through the pressing torsion spring (308) to realize in-place locking.
3. The unlocking and resetting device of the folding headrest according to claim 2, characterized in that: The in-place notch (309) is arranged on the rear side of the top of the fixed block (306), and the in-place notch (309) is trapezoidal with increasing opening.
4. The unlocking and resetting device of the folding headrest according to claim 1, characterized in that: The end of the rope of the unlocking cable (4) is provided with anti-drop block, and the pressing block (304) is provided with clamping hole (303) for clamping the anti-drop block.
5. A folding headrest mechanism with unlocking and resetting functions, comprising a headrest shell and a pair of left and right spaced headrest rods (8), a cross rod (801) being connected between the pair of headrest rods (8), the cross rod (801) and the upper part of the headrest rod (8) being located in the headrest shell, characterized in that: The unlocking and resetting device of the folding headrest of any one of claims 1-4 is provided with through hole for the horizontal rod (801) to pass through, and the inner sides of the front cover (1) and the rear cover (2) are both provided with positioning frame (b) for clamping the mounting frame (310) of the folding mechanism (3), and the folding mechanism (3) is clamped in the positioning frame (b) through the positioning frames (b) on the front and rear sides. The front cover (1) is provided with an unlocking cable fixing point (102) in the middle of the cable sleeve corresponding to the unlocking cable (4), the front cover (1) is provided with a reset cable lock head fixing point (101) for fixing the lock head of the reset cable (5), and the headrest rod (8) is provided with a reset cable (5) fixing point (302) for fixing the cable sleeve of the reset cable (5).
6. The folding headrest mechanism with unlocking and resetting functions according to claim 5, characterized in that: The end of the steel wire of the reset cable (5) is provided with a clamping block, and the reset cable lock head fixing point (101) is provided with a clamping groove for clamping the clamping block.
7. The folding headrest mechanism with unlocking and resetting functions according to claim 5, characterized in that: The inner sides of the front cover (1) and the rear cover (2) are respectively provided with a pair of clamping rods for clamping the horizontal rod (801), the clamping rods of the front cover (1) and the rear cover (2) are correspondingly arranged front and back, and the clamping rings for clamping the horizontal rod (801) are formed by the front and back clamping rods (a).
8. The folding headrest mechanism with unlocking and resetting functions according to claim 5, characterized in that: The unlocking cable (4) and the reset cable (5) are respectively pulled out from the inside of the headrest rod (8) on both sides, and the ends of the ropes of the unlocking cable (4) and the reset cable (5) are provided with motors, and the corresponding ropes are pulled by the motors.
9. The folding headrest mechanism with unlocking and resetting functions according to claim 5, characterized in that: The headrest rod (8) is further provided with a roller (7) for being placed below the steel wire of the reset cable (5), the headrest rod (8) is provided with a pair of roller supporting ears (301) for mounting the roller (7), and the roller shafts (6) of the rollers (7) are respectively mounted on the roller supporting ears (301) on the left and right sides.