An automatic unlocking device for assembling a headrest

Abstract

An automatic headrest unlocking device for assembly includes a frame with a positioning seat, an unlocking mechanism, and a separation mechanism mounted on it. The unlocking and separation mechanisms are located between the headrest and the positioning seat, and are connected to a control module via wiring. The application method is as follows: place the headrest on the positioning seat; activate the automatic unlocking device, causing a lever to extend into the unlocking notch and connect to an elastic element; drive the corresponding lever via a lever drive mechanism to disengage the elastic element from the headrest's limiting groove; push the headrest away from the positioning seat via the separation mechanism; reset the lever and disengage it from the elastic element, then be driven back to its initial position by the lever drive mechanism; finally, remove the headrest from the headrest. The advantages of this invention are: automatic separation of the headrest and headrest, saving time and effort, and great convenience.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat headrest disassembly and assembly technology, and more particularly to an automatic headrest unlocking device for assembly. Background Technology

[0002] The car seat headrest consists of a headrest body and a connecting seat. A headrest frame is fitted inside the headrest body and slidably connected to a headrest rod on the connecting seat. The headrest frame is equipped with a spring-loaded locking mechanism. The elastic element of the mechanism engages with a corresponding headrest rod limiting groove, thus locking the headrest frame to the headrest rod. Removing the elastic element from the headrest rod limiting groove unlocks the headrest frame and headrest rod, allowing adjustment of the headrest height. In factory-made headrests, the headrest body and connecting seat are connected for easy transport. However, when the headrest arrives at the assembly workshop and is ready for installation on the car seat, the connecting seat needs to be embedded. This requires separating the headrest body and connecting seat, first securing the connecting seat to the car seat, and then assembling the headrest body and connecting seat together. The current method of separating the headrest body and connecting seat requires manual removal of the elastic element from the headrest rod limiting groove, which is inefficient. Therefore, this disassembly and assembly method needs further improvement. Summary of the Invention

[0003] The first technical problem to be solved by this utility model is to provide an automatic headrest unlocking device for assembly that can automatically separate the headrest body from the connecting seat with high separation efficiency, in light of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: This automatic unlocking device for headrest assembly includes a frame, characterized in that: a positioning seat is provided on the frame to divide the headrest into two parts, a pillow body and a connecting seat, and to fix the pillow rod connecting the pillow body and the connecting seat; an unlocking mechanism that can move relative to the elastic locking mechanism of the pillow body and can disengage the elastic element in the elastic locking mechanism from the pillow rod, thereby realizing the back-and-forth sliding of the pillow body relative to the pillow rod; and a separation mechanism that can push the unlocked pillow body away from the connecting seat. The unlocking mechanism and the separation mechanism are located between the pillow body setting position and the positioning seat, and the unlocking mechanism and the separation mechanism are respectively connected to the control module through circuits.

[0005] As an improvement, the unlocking mechanism can preferably be two, each corresponding to an elastic locking mechanism on its respective pillow rod and controlled synchronously by a control module. The separation mechanism is located between the two unlocking mechanisms. The pillow body adopts a left-right synchronous unlocking structure, which can achieve smooth unlocking and improve the user experience; the unlocking device corresponds to the pillow body structure to meet the requirement of synchronous unlocking.

[0006] In a further improvement, the unlocking mechanism can preferably include a lever that can extend into the unlocking notch of the pillow frame and actuate the elastic element to disengage it from the pillow rod, and a lever drive mechanism that drives the lever. The lever is connected to the lever drive mechanism, which is connected to the frame. The lever drive mechanism is connected to the control module via wiring. This design is simple in structure, small in size, and easy to install.

[0007] In a further improvement, the lever drive mechanism may preferably include a swing member, a first drive mechanism for driving the swing member to move up and down, a second drive mechanism for driving the swing member to swing left and right and cooperating with the first drive mechanism to achieve oblique movement of the swing member, a third drive mechanism for driving the swing member to move forward, and a reset mechanism for driving the swing member to reset. The first and second drive mechanisms are mounted on the frame and are connected to the swing member for transmission. The third drive mechanism is connected to the moving part of the first drive mechanism. The swing member is mounted on the third drive mechanism. The reset mechanism is connected to the swing member and the third drive mechanism.

[0008] In a further improvement, the positioning seat can preferably be fixed to the frame, and a frame cavity is provided on the frame below the positioning seat. A limiting guide rail is provided at the lower part of the positioning seat, and the limiting guide rail is vertically inserted into the frame cavity. The lever driving mechanism is also located in the frame cavity, and the lever driving mechanism is movably connected to the limiting guide rail. The structure is more compact.

[0009] In a further improvement, the positioning seat can preferably be composed of two blocks joined together, with the two blocks passing through a limiting rod connected to the frame. A limiting spring is fitted onto the limiting rod, and the limiting spring is clamped between the two blocks. This allows the width of the positioning seat to be adjusted according to the width of the headrest, thus broadening its application range.

[0010] In a further improvement, the third drive mechanism may preferably include an airfoil pusher, which is connected to the moving part of the third drive mechanism. Each end of the airfoil pusher is provided with a horizontal sliding block that can slide horizontally along a limiting guide rail. Two swinging components are respectively connected to their corresponding horizontal sliding blocks. One drive mechanism drives two swinging components, reducing the number of parts, increasing efficiency, and improving synchronization.

[0011] As an improvement, the positioning seat may preferably be provided with a positioning seat groove that can accommodate the corresponding lever. This makes the structure more compact.

[0012] As an improvement, the separation mechanism may preferably include a separation push plate and a separation drive mechanism. The separation drive mechanism is disposed on the notch of the frame, the separation push plate is connected to the separation drive mechanism, and the separation drive mechanism is connected to the control module through a circuit.

[0013] The second technical problem to be solved by this utility model is to provide an application method for an automatic headrest unlocking device for assembly that can achieve automatic separation of the headrest body and the connecting seat with high separation efficiency, in light of the above-mentioned existing technology.

[0014] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: The application method of this automatic headrest unlocking device for assembly is characterized by including the following steps:

[0015] 1. Place the headrest to be disassembled on the positioning seat of the frame, so that the headrest rod is connected to the positioning seat, and the headrest body and the connecting seat are located on both sides of the positioning seat respectively;

[0016] 2. Activate the automatic unlocking device of the headrest so that the lever of the unlocking mechanism extends into the unlocking notch of the pillow frame and connects with the elastic element;

[0017] 3. Drive the corresponding levers through the lever drive mechanism to make the two levers move in a figure-eight shape, thereby causing the elastic element to disengage from the limiting groove of the pillow rod and unlock the pillow body and pillow rod;

[0018] Fourth, the pillow body is pushed away from the positioning seat by the separation mechanism, so that the elastic element of the pillow body no longer corresponds to the position of the limiting groove;

[0019] 5. The lever is reset and disengaged from the elastic element, and is driven back to its initial position by the lever driving mechanism;

[0020] 6. Remove the pillow body from the pillow rod to complete the separation of the pillow body and the connecting seat.

[0021] Compared with the prior art, the advantages of this utility model are as follows: A positioning seat is provided on the frame to separate the headrest into two parts: the headrest body and the connecting seat, and to fix the pillow rod connecting the headrest body and the connecting seat. The positioning seat can hold the headrest to be separated, freeing up the workers' hands, providing stable fixation, and enhancing safety. An unlocking mechanism is provided on the frame that can move relative to the elastic locking mechanism of the headrest body, disengaging the elastic element in the elastic locking mechanism from the pillow rod, thus enabling the headrest body to slide back and forth relative to the pillow rod. The unlocking mechanism automatically disengages the elastic element from the pillow rod, eliminating the need for workers to unlock the elastic locking mechanisms sequentially, achieving automatic separation between the headrest body and the pillow rod. This results in a high degree of automation, high separation efficiency, and good separation effect. A separation mechanism is provided on the frame to push the unlocked headrest body away from the connecting seat. This separation mechanism ensures that the headrest body moves forward, causing the elastic element to disengage from the pillow rod's limiting groove, facilitating the removal of the headrest body from the pillow rod, further improving separation efficiency. Attached Figure Description

[0022] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 Top view;

[0024] Figure 3 yes Figure 2 Cross-sectional view along line AA;

[0025] Figure 4 yes Figure 2 Cross-sectional view along the BB line;

[0026] Figure 5 yes Figure 1 A 3D view of the headrest placed in the center;

[0027] Figure 6 yes Figure 5 Top view;

[0028] Figure 7 yes Figure 6 Cross-sectional view along the CC line;

[0029] Figure 8 yes Figure 1 Exploded structural diagram;

[0030] Figure 9 yes Figure 8 A 3D view after removing part of the frame;

[0031] Figure 10 yes Figure 9 Exploded structural diagram;

[0032] Figure 11 yes Figure 10 A three-dimensional view of the decomposed portion from another angle;

[0033] Figure 12 yes Figure 11 Structural decomposition diagram of the middle section;

[0034] Figure 13 yes Figure 12 A further structural decomposition diagram from another angle;

[0035] Figure 14 yes Figure 13 Exploded view of the relevant parts of the already decomposed swing component;

[0036] Figure 15 yes Figure 5 A 3D view of the headrest;

[0037] Figure 16 yes Figure 15 Exploded structural diagram;

[0038] Figure 17 yes Figure 16 Top view of the central sleeper frame;

[0039] Figure 18 yes Figure 17 Cross-sectional view along the DD line;

[0040] Figure 19 yes Figure 16 A further exploded view of the structure after the middle pillow rod and connecting seat are flipped. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0042] like Figures 1 to 19 As shown, the automatic headrest unlocking device for assembly in this embodiment includes a frame 10. The frame 10 is equipped with a positioning seat 1 that divides the headrest into two parts: the headrest body and a connecting seat 20, and fixes the headrest rod 21 connecting the headrest body and the connecting seat 20. It also includes an unlocking mechanism that can move relative to the headrest body's elastic locking mechanism, allowing the elastic element 22 in the elastic locking mechanism to disengage from the headrest rod 21, thus enabling the headrest body to slide back and forth relative to the headrest rod 21. Finally, it includes a separation mechanism that pushes the unlocked headrest body away from the connecting seat 20. The unlocking mechanism and the separation mechanism are located between the headrest body's position and the positioning seat 1. The unlocking mechanism and the separation mechanism are respectively connected to a control module via wiring. The specific circuit structure of the control module is prior art and will not be described in detail here.

[0043] The headrest to be disassembled includes a pillow body and a connecting seat 20. The pillow body is wrapped around a pillow frame 2, and the pillow frame 2 is slidably connected to a pillow rod 21 on the connecting seat 20. The pillow frame 2 is equipped with an elastic locking mechanism. The elastic element 22 of the elastic locking mechanism engages with the corresponding pillow rod limiting groove 211 on the pillow rod 21, thereby locking the pillow frame 2 onto the pillow rod 21. Unlocking the pillow frame 2 and the pillow rod 21 by removing the elastic element 22 from the pillow rod limiting groove 211 allows for adjustment of the pillow body's height. A positioning recess 14 is provided at the top of the positioning seat 1, and the pillow rod 21 is engaged in the positioning recess.

[0044] There are two unlocking mechanisms, which correspond to the elastic locking mechanisms on their respective pillow rods 21 and are controlled by the control module to move synchronously. The separation mechanism is located between the two unlocking mechanisms.

[0045] The unlocking mechanism includes a lever 31 that can extend into the unlocking notch 23 of the pillow frame 2 and actuate the elastic element 22 to disengage the elastic element 22 from the pillow rod limiting groove 211; and a lever drive mechanism that drives the lever 31. The lever 31 is connected to the lever drive mechanism, which is connected to the frame 10. The lever drive mechanism is connected to the control module via wiring. The positioning seat 1 is provided with a positioning seat groove 17 that can accommodate the corresponding lever 31.

[0046] The positioning seat 1 is fixed to the frame 10. A frame cavity is provided on the frame below the positioning seat 1. A limit guide rail 11 is provided at the lower part of the positioning seat 1, and the limit guide rail 11 is vertically inserted into the frame cavity. The lever drive mechanism is also located in the frame cavity and is movably connected to the limit guide rail 11. The positioning seat 1 is composed of two blocks joined together. The two blocks are inserted onto a limit rod 12, which is connected to the frame 10. A limit spring 13 is fitted onto the limit rod 12, sandwiched between the two blocks. A side wall groove 16 is provided on the side of one of the blocks, and one end of the limit spring 13 can be inserted into the side wall groove 16.

[0047] The lever drive mechanism includes a swing member 3, a first drive mechanism for driving the swing member 3 to move up and down, a second drive mechanism for driving the swing member 3 to swing left and right and cooperating with the first drive mechanism to achieve oblique movement of the swing member 3, a third drive mechanism for driving the swing member 3 to move forward, and a reset mechanism for driving the swing member 3 to reset. The first drive mechanism and the second drive mechanism are mounted on the frame 10 and are connected to the swing member 3 for transmission. The third drive mechanism is connected to the moving part of the first drive mechanism. The swing member 3 is mounted on the third drive mechanism. The reset mechanism is connected to the swing member 3 and the third drive mechanism.

[0048] The first driving mechanism includes a first driver 60, a first moving block 6, and a moving block connecting plate 61. The first driver 60 is a cylinder or a hydraulic cylinder. The first moving block 6 is connected to the driving rod of the first driver 60 and can be driven by the first driver 60 to move up and down. The contact surface between the first moving block 6 and the first driver 60 is provided with a concave-convex meshing structure, so that the first moving block 6 moves along the first driver 60 when it moves. A limit block 62 is provided on the first moving block 6. The top of the limit block 62 is connected to the limit guide rail 11 via a connecting rod 111. When the first driver 60 drives the first moving block 6 to move up and down, the connecting rod 111 moves up and down relative to the limit guide rail 11. The moving block connecting plate 61 is provided on the limit block 62.

[0049] The third drive mechanism is connected to the moving block connecting plate 61. The third drive mechanism includes a third driver 40, an airfoil pusher 4, a horizontal slider 41, a guide rod 42, and a second moving block 44. The third driver 40 is mounted on the moving block connecting plate 61 and is a cylinder or hydraulic cylinder. The second moving block 44 is connected to the drive rod of the third driver 40 and can be driven to move back and forth by the third driver 40. The airfoil pusher 4 is mounted on the second moving block 44. Both ends of the airfoil pusher 4 are respectively connected to a U-shaped horizontal slider 41. The horizontal slider 41 is slidably inserted into the vertical slider 43, and the vertical slider 43 is sleeved on the limiting guide rail 11. The guide rod 42 passes through the horizontal slider 41, the limiting guide rail 11 and the vertical slider 43. The limiting guide rail 11 is provided with an oblong through hole for the guide rod 42 to move up and down. The second spring 82 of the reset mechanism is sleeved on the guide rod 42. One end of the second spring 82 contacts the inner wall of the horizontal slider 41 and the other end of the second spring 82 contacts the outer wall of the vertical slider 43.

[0050] Two swinging components 3 are respectively connected to corresponding horizontal sliding blocks 41. Each swinging component 3 includes a swing arm seat 30, with the swing arm of the swinging component 3 inserted into the swing arm seat 30. A swing arm seat connecting block 301 is provided on the back of the swing arm seat 30, and the swing arm seat connecting block 301 is fixed to the horizontal sliding block 41. A swing driving rod 32 is linked to the swing arm, and a lever 31 is connected to the swing arm. The first spring 81 of the reset mechanism is connected to the swing driving rod 32 and to the swing arm seat 30. A roller 321 is provided on the swing driving rod 32, and the roller 321 can rotate relative to the swing driving rod 32. Arc-shaped through holes are distributed on the swing arm seat 30, and the swing arm is connected through a pin 302 inserted into the arc-shaped through holes.

[0051] The second drive mechanism includes a second driver 70, which is a pneumatic cylinder or a hydraulic cylinder. The second driver 70 is positioned in the forward direction of the swing drive rod 32. The roller 321 of the swing drive rod 32 is actuated by the drive rod of the second driver 70, causing the lever 31 to swing.

[0052] The separation mechanism includes a separation push plate 50 and a separation drive mechanism. The separation drive mechanism is mounted on the notch 15 of the frame 1, and the separation push plate 50 is connected to the separation drive mechanism. The separation drive mechanism is connected to the control module via wiring. The separation drive mechanism includes a separation actuator 5, which is either a pneumatic cylinder or a hydraulic cylinder. The drive shaft of the separation actuator 5 is connected to a separation drive block, and the separation drive block is connected to the separation push plate 50. The width of the tail end of the notch 15 is smaller than the width of the separation push plate 50.

[0053] The application method of the automatic headrest unlocking device for assembly in this embodiment includes the following steps:

[0054] 1. Place the headrest to be disassembled on the positioning seat 1 of the frame 10, so that the headrest rod 21 is connected to the positioning seat 1, and the headrest body and the connecting seat 20 are located on both sides of the positioning seat 1 respectively.

[0055] 2. Activate the automatic unlocking device of the headrest so that the lever 31 of the unlocking mechanism extends into the unlocking notch 23 of the pillow frame 2 of the pillow body and connects with the elastic element 22;

[0056] 3. Drive the corresponding lever 31 through the lever drive mechanism to make the two levers 31 move in a figure-eight shape, thereby causing the elastic element 22 to disengage from the limiting groove 211 of the pillow rod 21 and unlock the pillow body and pillow rod.

[0057] Fourth, the pillow body is pushed away from the positioning seat 1 by the separation mechanism, so that the elastic element 22 of the pillow body no longer corresponds to the position of the limiting groove 211;

[0058] 5. The lever 31 is reset and disengaged from the elastic element 22, and is driven back to its initial position by the lever drive mechanism;

[0059] 6. Remove the pillow body from the pillow rod 21 to complete the separation of the pillow body and the connecting seat 20.

[0060] Working principle: When the headrest is installed on the positioning seat, the control module controls the third driver to push the horizontal sliding block forward. Since the swinging parts are fixed on the corresponding horizontal sliding blocks, the two swinging parts move forward with the horizontal sliding blocks, and the lever extends into the unlocking notch and engages with the elastic part.

[0061] The first driver drives the first moving block to move downward, which in turn moves the moving block connecting plate downward. The horizontal sliding block moves downward along with the vertical slider. At the same time, the second driver extends the cylinder rod and touches the roller body, which drives the swing drive rod to swing, and then drives the swing rod of the swing component to swing. As a result, the lever moves the elastic component, and the elastic component separates from the limit groove of the pillow rod. The separation push plate pushes the pillow body to separate from the connecting seat, and also pushes the elastic component to separate from the lever.

[0062] When the second driver releases the roller, the first spring drives the swing rod to reset, which in turn drives the lever to reset. At the same time, the second spring drives the horizontal slider to reset, and the first drive mechanism drives the lever back to its original height, completing the entire reset operation.

Claims

1. A headrest automatic unlocking device for assembly, comprising a frame body (10), characterized in that: The frame (10) is provided with a positioning seat (1) that can divide the headrest into two parts, the headrest body and the connecting seat (20) and fix the headrest rod (21) that connects the headrest body and the connecting seat (20), an unlocking mechanism that can move relative to the elastic locking mechanism of the headrest body and can disengage the elastic element (22) in the elastic locking mechanism from the headrest rod (21) to realize the back-and-forth sliding of the headrest body relative to the headrest rod (21), and a separation mechanism that can push the unlocked headrest body away from the connecting seat (20). The unlocking mechanism and the separation mechanism are located between the headrest body setting position and the positioning seat (1). The unlocking mechanism and the separation mechanism are respectively connected to the control module through lines.

2. The headrest automatic unlocking apparatus according to claim 1, characterized by: There are two unlocking mechanisms, each corresponding to an elastic locking mechanism on its respective pillow rod (21) and controlled by the control module to move synchronously. The separation mechanism is located between the two unlocking mechanisms.

3. The headrest automatic unlocking apparatus according to claim 2, characterized by: The unlocking mechanism includes a lever (31) that can extend into the unlocking notch (23) of the pillow frame (2) and actuate the elastic element (22) to disengage the elastic element (22) from the pillow rod (21), and a lever driving mechanism that drives the lever (31) to move. The lever (31) is connected to the lever driving mechanism, which is connected to the frame (10). The lever driving mechanism is connected to the control module via wiring.

4. The automatic headrest unlocking device according to claim 3, characterized in that: The lever drive mechanism includes a swing member (3), a first drive mechanism for driving the swing member (3) to move up and down, a second drive mechanism for driving the swing member (3) to swing left and right and cooperating with the first drive mechanism to achieve oblique movement of the swing member (3), a third drive mechanism for driving the swing member (3) to move forward, and a reset mechanism for driving the swing member (3) to reset. The first drive mechanism and the second drive mechanism are mounted on the frame (10) and are connected to the swing member (3) in a transmission. The third drive mechanism is connected to the moving part of the first drive mechanism. The swing member (3) is mounted on the third drive mechanism. The reset mechanism is connected to the swing member (3) and the third drive mechanism.

5. The headrest automatic unlocking apparatus according to claim 4, characterized by: The positioning seat (1) is fixed on the frame (10). A frame cavity is provided on the frame below the positioning seat (1). A limit guide rail (11) is provided at the lower part of the positioning seat (1). The limit guide rail (11) is vertically inserted in the frame cavity. The lever drive mechanism is also located in the frame cavity. The lever drive mechanism is movably connected to the limit guide rail (11).

6. The headrest automatic unlocking apparatus according to claim 5, characterized by: The positioning seat (1) is composed of two blocks, which are inserted through the limiting rod (12). The limiting rod (12) is connected to the frame (10). A limiting spring (13) is fitted on the limiting rod (12) and the limiting spring (13) is sandwiched between the two blocks.

7. The headrest automatic unlocking apparatus according to claim 5 or 6, characterized by: The third driving mechanism includes an airfoil push block (4), which is connected to the moving part of the third driving mechanism. Each end of the airfoil push block (4) is provided with a horizontal sliding block (41) that can slide horizontally along the limiting guide rail (11). Two swinging members (3) are respectively connected to the corresponding horizontal sliding blocks (41).

8. The headrest automatic unlocking apparatus according to any one of claims 3 to 6, characterized by: The positioning seat (1) is provided with a positioning seat groove (17) capable of accommodating a corresponding dial lever (31).

9. The headrest automatic unlocking apparatus according to any one of claims 1 to 6, characterized by: The separating mechanism comprises a separating push plate (50) and a separating drive mechanism, the separating drive mechanism is arranged on the notch (15) of the frame body (1), the separating push plate (50) is connected to the separating drive mechanism, and the separating drive mechanism is connected with the control module through a line.

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