A suspended electric lifting headrest

Abstract

The utility model discloses a kind of suspension type electric lifting headrest, including headrest shell, headrest rod assembly and electric drive mechanism, headrest shell includes mutually buckled headrest front cover and headrest rear cover, further include the moving block of being fixed in the inside of headrest shell, moving block is equipped with the vertical extension guide hole on, headrest rod assembly includes vertical pole section and cross bar section, moving block is set on vertical pole section by guide hole, and can be moved up and down along it, cross bar section is outward and is fixed on seat backrest, headrest rear cover is reserved with the strip-shaped avoidance hole for cross bar section to pass through on, to make headrest rear cover can be moved up and down relative to cross bar section, electric drive mechanism is connected between headrest rod assembly and moving block, it can drive moving block to be moved up and down along vertical pole section, to drive headrest shell to be moved up and down, to realize the lift adjustment of headrest further.The utility model structure is simple, can satisfy the individualized demand of different passengers, and can improve the beauty of seat and the safety of headrest.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a suspended electric lifting headrest. Background Technology

[0002] In the automotive industry, car seat headrests, as crucial components ensuring the comfort and safety of drivers and passengers, have undergone continuous evolution in performance and design. Among them, the floating height-adjustable headrest, with its ability to flexibly adjust its height according to different drivers' and passengers' heights and postures, has gradually become a key feature for enhancing the comfort and functionality of car seats. However, traditional floating height-adjustable headrests have several significant drawbacks. In terms of component structure, they have a large number of parts, which not only increases manufacturing costs but also complicates the installation structure. More parts mean more assembly processes and higher precision requirements, which can easily lead to assembly errors during production, thus affecting the overall quality and performance of the headrest. Regarding adjustment methods, traditional floating height-adjustable headrests mostly use manual adjustment. Manual adjustment requires drivers and passengers to operate the relevant adjustment mechanisms manually, a cumbersome and laborious process that makes precise height adjustment difficult. In terms of aesthetics and safety, traditional floating height-adjustable headrests often have exposed mechanisms after height adjustment. These exposed mechanisms not only detract from the overall aesthetics of the car seat, making it look cluttered, but may also pose safety hazards. Exposed structures may snag on the clothing or other items of the occupants while the vehicle is in motion, or even cause additional injury to the occupants in the event of a collision. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention aims to provide a suspended electric lifting headrest that is simple in structure, easy to adjust, aesthetically pleasing and highly safe.

[0004] To achieve the above objectives, this utility model proposes a floating electric lifting headrest for automobile seats, comprising a headrest shell, a headrest rod assembly, and an electric drive mechanism. The headrest shell includes a front headrest cover and a rear headrest cover that interlock, and a movable block fixed inside the headrest shell. The movable block has a vertically extending guide hole. The headrest rod assembly is generally L-shaped, comprising a vertical rod section and a horizontal rod section. The movable block is fitted onto the vertical rod section through the guide hole and can move up and down along it. The horizontal rod section extends outward through the rear headrest cover and is fixed to the seat back. The rear headrest cover has a clearance hole for the horizontal rod section to pass through. The clearance hole is a vertically extending strip-shaped hole, allowing the rear headrest cover to move up and down relative to the horizontal rod section. The electric drive mechanism is connected between the headrest rod assembly and the movable block. The electric drive mechanism can drive the movable block to move up and down along the vertical rod section, thereby moving the headrest shell up and down, and thus realizing the lifting and lowering adjustment of the headrest.

[0005] In the above solution: the headrest rod assembly includes two sets of L-shaped rods. Each set of L-shaped rods includes a vertical rod segment and a horizontal rod segment. A headrest reinforcing rod connects the two horizontal rod segments. The moving block is fitted onto the two vertical rod segments through two guide holes. Two clearance holes are provided on the headrest back cover corresponding to the two horizontal rod segments. The headrest reinforcing rod connects the two horizontal rod segments, forming a stable overall frame. This design significantly enhances the structural strength and stability of the headrest rod assembly. The moving block is fitted onto the two vertical rod segments through two guide holes. This dual-guide structure provides more precise guidance for the lifting and lowering movement of the headrest shell, increasing the stability of the headrest lifting and lowering adjustment.

[0006] In the above solution: the electric drive mechanism includes a drive motor, which is fixed to a movable block, which is fixed to the headrest front cover. A lead screw is connected to the output end of the drive motor, and a motor nut is fixed to the headrest reinforcing rod. The lead screw extends vertically and is threadedly connected to the motor nut. When the drive motor operates, it drives the movable block to move up and down along the vertical rod section, thereby moving the headrest shell up and down, thus achieving the lifting and lowering adjustment of the headrest. The drive motor, lead screw, and motor nut cooperate to form a lead screw and nut transmission structure, which features high transmission accuracy and smooth operation.

[0007] In the above scheme: several guide ribs are evenly distributed circumferentially on the inner wall of the guide hole. The guide ribs extend vertically, and the vertical rod segment is separated from the inner wall of the guide hole by the guide ribs. These guide ribs play a guiding role, ensuring that the moving block maintains a straight line during its up and down movement, avoiding deviation, shaking, or jamming (because the guide ribs reduce the contact area between the vertical rod segment and the inner wall of the guide hole, they can reduce the frictional resistance between the two when the moving block moves up and down, making the headrest adjustment smoother), thereby ensuring the accuracy and stability of the headrest adjustment.

[0008] In the above solution: the headrest reinforcing rod is provided with a lower abutment surface for downward contact with the bottom surface of the inner cavity of the headrest rear cover, and an upper abutment surface for upward contact with the moving block. When the lower abutment surface is in contact with the bottom surface of the inner cavity of the headrest rear cover, the suspended electric lifting headrest is at its upper limit position; when the upper abutment surface is in contact with the moving block, the suspended electric lifting headrest is at its lower limit position. The upper and lower limit positions provide clear boundaries for headrest height adjustment for drivers and passengers, avoiding over-adjustment, and the use of existing components for limiting movement helps reduce the number of components used.

[0009] In the above scheme, the movable block is provided with a stepped surface for abutting against the upper contact surface, which has a simple structure and is easy to process.

[0010] In the above solution: when the suspended electric lifting headrest is at its upper limit position, the bottom end of the headrest rod assembly is in contact with the bottom surface of the inner cavity of the headrest front cover. Setting two limit stops can better ensure the limiting effect.

[0011] In the above solution: each of the two crossbar segments on the seat back is provided with a retaining spring fixing block, and both crossbar segments are detachably fixed in the retaining spring fixing block by retaining springs. The structure is simple and easy to disassemble and assemble.

[0012] In the above solution: a headrest speaker is fixed inside the headrest shell, the headrest speaker is connected to the headrest wiring harness, the L-shaped rod is a hollow structure, the headrest wiring harness passes through the inner core of the L-shaped rod and extends into the seat back, and communicates with the seat wiring harness, thus realizing a hidden layout of the wiring harness and avoiding potential safety hazards caused by exposed wiring harnesses, such as wiring harness tangling or being pulled.

[0013] The beneficial effects of this utility model are:

[0014] 1. The structure is simple and clear, and the connection methods between the components are intuitive and straightforward. During installation, operators can quickly and accurately assemble the headrest components, greatly shortening installation time and reducing installation difficulty. 2. The headrest height adjustment is achieved through an electric drive mechanism, which is more convenient than manual adjustment. The electric drive mechanism can precisely control the movement distance of the moving blocks, thus achieving precise headrest height adjustment to meet the personalized needs of different passengers. 3. During height adjustment, all components are hidden inside the headrest shell. The relative movement between the headrest shell and the headrest rod assembly is achieved through the strip-shaped clearance holes on the back cover. This makes the car seat look simpler and more elegant, improving the overall aesthetics of the seat and enhancing headrest safety. Attached Figure Description

[0015] Figure 1 This is an exploded schematic diagram of this utility model.

[0016] Figure 2 This is a structural schematic diagram of the headrest rod assembly.

[0017] Figure 3 This is the front view of this utility model.

[0018] Figure 4 yes Figure 3 A cross-sectional view at point AA. (From left to right: headrest design position, upper limit position, and lower limit position)

[0019] Figure 5 yes Figure 3 Cross-sectional diagram at point BB. (From left to right: headrest design position, upper limit position, and lower limit position)

[0020] Figure 6 yes Figure 3 A schematic diagram of the cross-section at point CC.

[0021] Figure 7 This is a schematic diagram illustrating the application of this utility model in a zero-gravity seat. Detailed Implementation

[0022] like Figure 1 As shown in Figure 7, a floating electric lifting headrest for automobile seats mainly consists of a headrest shell, a headrest rod assembly 1, an electric drive mechanism 2, and a movable block 5 fixed inside the headrest shell. The headrest shell includes a front headrest cover 3 and a rear headrest cover 4 that are interlocked. The front side of the front headrest cover 3 is covered with headrest foam 9, and the headrest foam 9 is covered with a headrest cover 10.

[0023] The movable block 5 is provided with a vertically extending guide hole 51. The headrest rod assembly 1 is L-shaped in general, including a vertical rod section and a horizontal rod section. The movable block 5 is sleeved on the vertical rod section through the guide hole 51 and can move up and down along it. The horizontal rod section extends outward through the headrest back cover 4 and is fixed to the seat back 6. The headrest back cover 4 has a clearance hole for the horizontal rod section to pass through. The clearance hole is a strip-shaped hole that extends up and down so that the headrest back cover 4 can move up and down relative to the horizontal rod section.

[0024] The electric drive mechanism is connected between the headrest rod assembly 1 and the moving block 5. The electric drive mechanism can drive the moving block 5 to move up and down along the vertical rod section, thereby driving the headrest shell to move up and down, and thus realizing the lifting and lowering adjustment of the headrest.

[0025] Ideally, the headrest rod assembly 1 includes two sets of L-shaped rods 11. Each set of L-shaped rods includes a vertical rod segment and a horizontal rod segment. A headrest reinforcing rod 12 connects the two horizontal rod segments. A movable block 5 is fitted onto the two vertical rod segments through two guide holes 51. Two clearance holes are provided on the headrest back cover 4 corresponding to the two horizontal rod segments. The headrest reinforcing rod 12 connects the two horizontal rod segments, forming a stable overall frame. This design significantly enhances the structural strength and stability of the headrest rod assembly 1. The movable block 5 is fitted onto the two vertical rod segments through two guide holes 51. This dual-guide structure provides more precise guidance for the lifting and lowering movement of the headrest shell, increasing the stability of the headrest lifting and lowering adjustment.

[0026] Preferably, the electric drive mechanism 2 includes a drive motor 22, which is fixed to a movable block 5. The movable block 5 is fixed to the headrest front cover 3. A lead screw is connected to the output end of the drive motor 22. A motor nut 21 is fixed to the headrest reinforcing rod 12. The lead screw extends vertically and is threadedly connected to the motor nut 21. When the drive motor 22 is working, it can drive the movable block 5 to move up and down along the vertical rod section, thereby driving the headrest shell to move up and down, thus realizing the lifting and lowering adjustment of the headrest. The drive motor 22, the lead screw, and the motor nut 21 cooperate to form a lead screw and nut transmission structure, which has the characteristics of high transmission accuracy and smooth operation.

[0027] Ideally, several guide ribs are evenly distributed circumferentially on the inner wall of the guide hole 51. The guide ribs extend vertically, and the vertical rod segment is separated from the inner wall of the guide hole 51 by the guide ribs. These guide ribs can guide the movement, ensuring that the moving block 5 maintains a straight line during its up-and-down movement, avoiding deviation, shaking, or jamming (because the guide ribs reduce the contact area between the vertical rod segment and the inner wall of the guide hole 51, they can reduce the frictional resistance between the two when the moving block 5 moves up and down, making the headrest adjustment smoother), thereby ensuring the accuracy and stability of the headrest adjustment.

[0028] Ideally, the headrest reinforcing rod 12 has a lower abutment surface for contacting the bottom surface of the inner cavity of the headrest rear cover 4, and an upper abutment surface for contacting the moving block 5. When the lower abutment surface contacts the bottom surface of the inner cavity of the headrest rear cover 4, the suspended electric lifting headrest is at its upper limit position; when the upper abutment surface contacts the moving block 5, the suspended electric lifting headrest is at its lower limit position. These upper and lower limit positions provide clear boundaries for headrest adjustment, preventing over-adjustment, and the use of existing components for limiting movement reduces the number of components required. Ideally, the moving block 5 has a stepped surface for contacting the upper abutment surface, resulting in a simple structure and easy manufacturing.

[0029] Ideally, when the suspended electric lifting headrest is at its upper limit position, the bottom end of the headrest rod assembly 1 should just contact the bottom surface of the inner cavity of the headrest front cover 3. Setting two limit stops can better ensure the limiting effect.

[0030] Ideally, each of the two crossbar segments on the seat back 6 is provided with a retaining spring fixing block 7, and both crossbar segments are detachably fixed in the retaining spring fixing block 7 by retaining springs. The structure is simple and easy to disassemble and assemble.

[0031] Ideally, a headrest speaker 8 is fixed inside the headrest shell, and the headrest speaker 8 is connected to the headrest wiring harness. The L-shaped rod has a hollow structure, and the headrest wiring harness passes through the inner core of the L-shaped rod and extends into the seat back 6, and connects with the seat wiring harness. This achieves a hidden wiring harness layout, avoiding potential safety hazards caused by exposed wiring harnesses, such as wiring harness tangling or being pulled.

[0032] This invention is commonly used in zero-gravity seats to achieve linkage between headrest height adjustment and zero-gravity adjustment. For example, as the seat moves from the designed position to the zero-gravity position, the suspended electric lifting headrest adjusts downwards along with the zero-gravity function, providing head support for the passenger and improving comfort.

Claims

1. A suspended electric lifting headrest, comprising a headrest shell, a headrest rod assembly (1), and an electric drive mechanism (2), wherein the headrest shell comprises a front headrest cover (3) and a rear headrest cover (4) that interlock with each other, characterized in that: It also includes a movable block (5) fixed inside the headrest shell. The movable block (5) is provided with a vertically extending guide hole (51). The headrest rod assembly (1) is L-shaped in general. It includes a vertical rod section and a horizontal rod section. The movable block (5) is sleeved on the vertical rod section through the guide hole (51) and can move up and down along it. The horizontal rod section extends outward through the headrest back cover (4) and is fixed on the seat back (6). The headrest back cover (4) has a clearance hole for the horizontal rod section to pass through. The clearance hole is a strip-shaped hole that extends up and down so that the headrest back cover (4) can move up and down relative to the horizontal rod section. The electric drive mechanism is connected between the headrest rod assembly (1) and the movable block (5). The electric drive mechanism can drive the movable block (5) to move up and down along the vertical rod section, thereby driving the headrest shell to move up and down, and thus realizing the lifting and lowering adjustment of the headrest.

2. The suspended electric lifting headrest according to claim 1, characterized in that: The headrest rod assembly (1) includes two sets of L-shaped rods (11). Each set of L-shaped rods includes a vertical rod section and a horizontal rod section. A headrest reinforcing rod (12) is connected between the two horizontal rod sections. The moving block (5) is fitted onto the two vertical rod sections through two guide holes (51). Two clearance holes are provided on the headrest back cover (4) corresponding to the two horizontal rod sections.

3. The suspended electric lifting headrest according to claim 2, characterized in that: The electric drive mechanism (2) includes a drive motor (22), which is fixed on a moving block (5). The moving block (5) is fixed on the headrest front cover (3). The output end of the drive motor (22) is connected to a lead screw. A motor nut (21) is fixed on the headrest reinforcing rod (12). The lead screw extends vertically and is threadedly connected to the motor nut (21).

4. The suspended electric lifting headrest according to claim 2, characterized in that: Several guide ribs are evenly distributed circumferentially on the inner wall of the guide hole (51). The guide ribs extend vertically, and the vertical rod segment is separated from the inner wall of the guide hole (51) by each guide rib.

5. The suspended electric lifting headrest according to claim 2, characterized in that: The headrest reinforcing rod (12) is provided with a lower contact surface for contacting the bottom surface of the inner cavity of the headrest back cover (4) downwards, and an upper contact surface for contacting the moving block (5) upwards. When the lower contact surface contacts the bottom surface of the inner cavity of the headrest back cover (4), the suspended electric lifting headrest is in the upper limit position. When the upper contact surface contacts the moving block (5), the suspended electric lifting headrest is in the lower limit position.

6. The suspended electric lifting headrest according to claim 5, characterized in that: The movable block (5) is provided with a stepped surface for abutting against the upper contact surface.

7. The suspended electric lifting headrest according to claim 5, characterized in that: When the suspended electric lifting headrest is in the upper limit position, the bottom end of the headrest rod assembly (1) is in contact with the bottom surface of the inner cavity of the headrest front cover (3).

8. The suspended electric lifting headrest according to claim 2, characterized in that: The seat back (6) is provided with a retaining spring fixing block (7) for each of the two crossbar segments. Both crossbar segments are detachably fixed in the retaining spring fixing block (7) by retaining springs.

9. The suspended electric lifting headrest according to claim 2, characterized in that: The headrest housing is equipped with a headrest speaker (8), which is connected to the headrest wiring harness. The L-shaped rod is a hollow structure, and the headrest wiring harness passes through the inner core of the L-shaped rod and extends into the seat back (6), and communicates with the seat wiring harness.

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