Headrest electrical connector plug and socket positioning structure

Abstract

This utility model discloses a headrest electrical connector insertion and removal positioning structure, including a backrest and a headrest connected to the upper end of the backrest. The headrest has a headrest rod, and a first connector is provided at the lower end of the headrest rod. A positioning seat is fixedly installed at the upper end of the backrest, and a second connector that can move up and down is preset in the positioning seat. The first connector and the second connector can be inserted and connected. An elastic support component is provided in the positioning seat, and the second connector is supported on the elastic support component. During the up and down movement of the second connector, the elastic support component continuously applies an upward pushing force to the second connector. The second connector has a maximum moving position in the positioning seat. At this maximum moving position, the first connector and the second connector can be separated and inserted. The beneficial effect of this utility model is that, while satisfying the requirement of a detachable headrest, it can ensure that the headrest, after being installed on the backrest, still meets the technical requirements of height adjustment and wiring harness power supply.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, specifically to a headrest electrical connector plug-in and positioning structure. Background Technology

[0002] Headrests are an extremely important safety and comfort feature of car seats. Currently, in order to meet market demands for convertible seats such as those with quick-folding backrests and one-button bed conversion, headrests need to be designed with a detachable structure.

[0003] However, many headrests integrate various electrical components such as speakers, microphones, heaters, and massagers. Since the power and control modules are typically located inside the backrest, conductive and communication wiring must be installed between the backrest and the headrest. Currently, this wiring is usually run inside the headrest rod. Furthermore, many headrests, once installed on the backrest, also require height adjustment.

[0004] Therefore, while meeting the requirement of detachable headrests, how to balance the height adjustment of the headrest rod and the conduction of its internal wiring harness has become a pressing technical problem to be solved. Utility Model Content

[0005] In view of this, the present invention provides a headrest electrical connector plug-in and positioning structure, which, while ensuring that the headrest is detachable, still meets the technical requirements of height adjustment and wiring harness power supply after the headrest is installed on the backrest.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A headrest electrical connector insertion and removal positioning structure includes a backrest and a headrest connected to the upper end of the backrest. The upper part of the backrest is provided with a guide sleeve extending along its height direction. The headrest has a headrest rod adapted to the guide sleeve. The headrest rod can move up and down along the guide sleeve. A first connector is provided at the lower end of the headrest rod. The key feature is that a positioning seat is fixedly installed at the upper end of the backrest. A second connector that can move up and down is preset in the positioning seat. The first connector and the second connector can be separated and inserted.

[0008] With the above structure, when installing the headrest, the headrest rod is inserted downwards into the positioning seat through the guide sleeve, allowing the first and second connectors to connect and conduct electricity. At this time, the electrical components integrated inside the headrest can be energized, completing the installation of the headrest rod. When adjusting the height of the headrest rod, it can continue to move downwards, thereby driving the first and second connectors to move up and down synchronously in the space below. When it is necessary to disassemble the headrest, the headrest rod is pulled upwards. As the headrest rod is pulled upwards out of the positioning seat, the first and second connectors can separate and disconnect. The first connector continues to be pulled out from the guide sleeve along with the headrest rod, completing the disassembly of the headrest.

[0009] Preferably, the positioning seat is provided with an elastic support component, and the second connector is supported on the elastic support component. During the up and down movement of the second connector, the elastic support component continuously applies an upward thrust to the second connector.

[0010] The second connector has its highest movable position within the positioning seat, at which the first and second connectors can be separated and inserted. With this structure, in the initial state, the upward thrust provided by the elastic support assembly keeps the second connector in its highest movable position. When installing the headrest, the headrest rod is inserted downwards into the positioning seat through the guide sleeve. During this process, the elastic support assembly provides strong support for the second connector, enabling the first and second connectors to connect and conduct electricity. At this point, the electrical components integrated within the headrest are energized, completing the installation of the headrest rod. When adjusting the height of the headrest rod, the headrest rod can overcome the thrust of the elastic support assembly and continue to move downwards, thereby causing the first and second connectors to move synchronously up and down in the space below. During the up-and-down movement of the second connector, the elastic support assembly continuously applies an upward thrust to the second connector, ensuring stable connection between the first and second connectors during the raising and lowering of the headrest rod, improving the reliability of electrical conductivity. When the headrest needs to be removed, pull up the headrest rod. As the headrest rod is pulled upwards out of the positioning seat, when the second connector is at its highest moving position within the positioning seat, the first connector and the second connector can separate and disconnect. The first connector continues to be pulled out from the guide sleeve along with the headrest rod, completing the removal of the headrest.

[0011] Preferably, the positioning seat has a guide hole on its upper part, and when the second connector is in the highest moving position, at least part of the upper end of the second connector extends into the guide hole. With the above structure, since the lower part of the second connector is elastically supported by the elastic support component, when the connector rod is re-inserted, the guide hole provides a guiding and positioning function for the upper end of the second connector. The elastic support component can assist the first connector and the second connector in alignment through a continuous upward thrust, thereby achieving a stable docking of the lower end of the first connector and the upper end of the second connector.

[0012] Preferably, a limiting structure is provided between the guide hole and the second connector, the limiting structure being used to separate the first connector and the second connector at the highest moving position. This structure prevents the second connector from detaching from the upper end of the positioning seat during the upward pulling of the headrest rod.

[0013] Preferably, the second connector is provided with a support platform, and the elastic support assembly includes a support block and an elastic component. The upper end of the support block is rotatably mounted in the positioning seat, and the elastic component is installed between the support block and the positioning seat. The elastic component applies an elastic thrust that causes the support block to tilt and abut against one side of the support platform.

[0014] After the first and second connectors are inserted, moving the headrest rod downwards overcomes the thrust of the elastic component, forcing the support block to rotate, thereby causing the first and second connectors to move downwards synchronously. Using this structure, after the first and second connectors are inserted, adjusting the headrest rod height downwards overcomes the pressure of the elastic component, forcing the support block to rotate around the pivot point, thus releasing the limiting constraint on the second connector. The headrest rod then drives the first and second connectors to move downwards synchronously.

[0015] Preferably, two sets of the support blocks and elastic components are provided, each corresponding to the other. The two sets of support blocks are respectively positioned at both ends of the positioning seat, with a clearance between them to prevent the second connector from moving downwards. This structure ensures structural stability, effectively prevents the second connector from tilting, and ensures that the second connector remains centered and coaxial during vertical movement, resulting in a more stable and reliable connection with the first connector.

[0016] Preferably, the upper end of the support block is provided with a connecting part that is perpendicular to the support block and extends outward, and the connecting part is rotatably installed in the positioning seat. With the above structure, the connecting part provides a stable fulcrum for the support block, allowing the support block to rotate more flexibly and stably within the positioning seat.

[0017] Preferably, the elastic component is a torsion spring, which is sleeved on the connecting part. With the above structure, the torsion spring can provide a continuous tilting force to the support block against one side of the support platform, ensuring that the support block stably maintains its limited posture when no external force is applied, and providing stable support for the second connector.

[0018] Preferably, the support block has a limiting groove extending along its length, one end of the support platform slides against the limiting groove, and the lower end of the limiting groove has a lower stop block. With this structure, the limiting groove provides a guiding channel for the movement of the support platform, ensuring the stability of the second connector's vertical movement. The lower stop block restricts the lowest downward position of the second connector. When the second connector is at its lowest position, both ends of the support platform can abut against the lower stop block, thus preventing the headrest rod from moving further downward.

[0019] Preferably, the support platform has a square structure, and the inner wall of the positioning seat is provided with a second guide groove extending along its height direction. A guide protrusion adapted to the second guide groove is provided on one side of the support platform, and the guide protrusion can slide up and down along the second guide groove. This structure ensures that the second connector maintains a balanced and stable state when stationary or moving up and down, preventing tilting or offset.

[0020] Preferably, the upper part of the support block is provided with an extension portion, which corresponds to the highest moving position of the second connector, so that the support platform can be more stably supported at the highest position.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. The headrest electrical connector insertion and positioning structure provided by this utility model, in its initial state, uses an elastic support component to keep the second connector in its highest moving position. When installing the headrest, the headrest rod is inserted downwards into the positioning seat through the guide sleeve. During this process, the elastic support component provides strong support for the second connector, enabling the first and second connectors to connect and conduct electricity. At this time, the electrical components integrated inside the headrest can be energized, completing the installation of the headrest rod. When adjusting the height of the headrest rod, the headrest rod can overcome the thrust of the elastic support component and continue to move downwards, thereby driving the first and second connectors to move up and down synchronously in the space below. During the up and down movement of the second connector, the elastic support component continuously applies an upward thrust to the second connector, ensuring stable connection between the first and second connectors during the lifting and lowering of the headrest rod, improving the reliability of electrical conductivity. When it is necessary to disassemble the headrest, the headrest rod is pulled upwards. During the process of pulling the headrest rod upwards out of the positioning seat, when the second connector is in its highest moving position within the positioning seat, the first and second connectors can separate and disconnect. The first connector continues to be pulled out from the guide sleeve along with the headrest rod, completing the disassembly of the headrest.

[0023] 2. The headrest electrical connector insertion and removal positioning structure provided by this utility model can separate the first connector and the second connector at the highest moving position, and prevent the second connector from being pulled out from the upper end of the positioning seat during the upward pulling of the headrest rod.

[0024] 3. By incorporating elastic components, an angle is always maintained between the sliding direction of the second connector and the supporting block. This ensures that the second connector can remain stable at any height on the positioning seat without slipping, preventing the connector from falling during movement and causing connection failure. This improves the overall structural connection reliability and operational safety.

[0025] 4. The headrest electrical connector insertion and removal positioning structure provided by this utility model can ensure that the second connector can only move up and down along the axis of the positioning seat, effectively avoiding circumferential rotation and radial offset of the second connector, ensuring that the first connector and the second connector always remain coaxially aligned during the insertion process, avoiding problems such as poor contact or excessive insertion and removal resistance due to misalignment, and further enhancing the reliability and stability of the overall structure. Attached Figure Description

[0026] Figure 1A schematic diagram of the headrest electrical connector insertion and removal positioning structure;

[0027] Figure 2 A cross-sectional view of the headrest electrical connector insertion and removal positioning structure;

[0028] Figure 3 Another partial cross-sectional view of the headrest electrical connector insertion and removal positioning structure;

[0029] Figure 4 A schematic diagram of the structure after the backrest 1 and positioning seat 3 are hidden by the headrest electrical connector plug-in and plug-out positioning structure;

[0030] Figure 5 This is a schematic diagram of the positioning seat 3;

[0031] Figure 6 A cross-sectional view showing the internal limiting structure of the positioning seat 3;

[0032] Figure 7 A cross-sectional view showing the positional relationship between the second guide groove 32 and the guide protrusion 411;

[0033] Figure 8 This is a schematic diagram of the structure of the second connector 4;

[0034] Figure 9 This is a structural schematic diagram of the supporting block 6;

[0035] Figure 10 This is a schematic diagram of the second connector 4 in its lowest moving position. Detailed Implementation

[0036] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0037] like Figure 1 and Figure 2 As shown, a headrest electrical connector insertion and removal positioning structure includes a backrest 1 and a headrest 2 detachably connected to the upper end of the backrest 1. The headrest 2 integrates electrical components such as speakers or microphones. The upper part of the backrest 1 has a guide sleeve 11 extending along its height direction. The headrest 2 has a headrest rod 21 adapted to the guide sleeve 11, which can move up and down along the guide sleeve 11. A first connector 5 is fixedly mounted at the lower end of the headrest rod 21, and the upper end of the first connector 5 is electrically connected to the electrical components inside the headrest 2 via a headrest wiring harness. A positioning seat 3 is fixedly installed at the upper end of the backrest 1, located at the lower end of the guide sleeve 11. A second connector 4, which can move up and down, is pre-installed in the positioning seat 3. The lower end of the first connector 5 can be inserted and connected to the upper end of the second connector 4. After the first connector 5 and the second connector 4 are connected, power can be supplied to the electrical components inside the headrest 2.

[0038] In this embodiment, the positioning seat 3 is provided with an elastic support component, and the second connector 4 is supported on the elastic support component. During the up-and-down movement of the second connector 4, the elastic support component continuously applies an upward thrust to the second connector 4. Figure 2 As shown, the second connector 4 has the highest movable position within the positioning seat 3, at which the first connector 5 and the second connector 4 can be separated and connected.

[0039] Based on the above structural design, the working principle of the headrest electrical connector insertion and positioning structure is as follows: In the initial state, the upward thrust provided by the elastic support component keeps the second connector 4 in its highest moving position. When installing the headrest 2, the headrest rod 21 is inserted downward into the positioning seat 3 through the guide sleeve 11. During this process, the elastic support component provides strong support for the second connector 4, enabling the first connector 5 and the second connector 4 to be inserted and connected. At this time, the electrical components integrated in the headrest 2 can be energized, completing the installation of the headrest rod 21. When adjusting the height of the headrest rod 21, the headrest rod 21 can overcome the thrust of the elastic support component and continue to move downward, thereby driving the first connector 5 and the second connector 4 to move up and down synchronously in the space below. During the up and down movement of the second connector 4, the elastic support component continuously applies an upward thrust to the second connector 4, ensuring stable connection between the first connector 5 and the second connector 4 during the lifting and lowering of the headrest rod 21, improving the reliability of electrical conductivity. When it is necessary to disassemble the headrest 2, pull up the headrest rod 21. During the process of pulling the headrest rod 21 upward out of the positioning seat 3, when the second connector 4 is in the highest moving position inside the positioning seat 3, the first connector 5 and the second connector 4 can be separated and disconnected. The first connector 5 continues to be pulled out from the guide sleeve 11 along with the headrest rod 21, thus completing the disassembly of the headrest 2.

[0040] Furthermore, for example Figure 2 and Figure 5 As shown, the upper part of the positioning base 3 is provided with a guide hole 31. When the second connector 4 is in the highest moving position, at least part of the upper end of the second connector 4 extends into the guide hole 31. Since the lower part of the second connector 4 is elastically supported by the elastic support component, when the connector rod 21 is re-inserted, the guide hole 31 forms a guiding and positioning effect on the upper end of the second connector 4. The elastic support component can assist the first connector 5 and the second connector 4 in alignment through continuous upward thrust, thereby achieving stable docking of the lower end of the first connector 5 and the upper end of the second connector 4.

[0041] Furthermore, a limiting structure is provided between the guide hole 31 and the second connector 4. This limiting structure enables the first connector 5 and the second connector 4 to separate at the highest moving position, preventing the second connector 4 from being pulled out from the upper end of the positioning seat 3 during the upward pulling of the headrest rod 21.

[0042] For details, please refer to Figure 5 and Figure 8 The limiting structure includes a first guide groove 33 disposed on one side of the inner wall of the guide hole 31, and a guide protrusion 42 disposed at one upper end of the second connector 4. The guide protrusion 42 can slide up and down along the first guide groove 33. Figure 6 As shown, in this embodiment, two sets of first guide grooves 33 are provided and symmetrically distributed at opposite ends of the inner wall of the guide hole 31. Two sets of guide protrusions 42 are also provided and correspond one-to-one with the first guide grooves 33. The upper end of the first guide groove 33 is closed and the lower end is open. This structural design allows the upper end of the guide protrusions 42 to abut against the upper end of the first guide groove 33 when the second connector 4 is in its highest moving position, preventing the second connector 4 from passing through the guide hole 31. The second connector 4 is stably restricted to the upper end of the positioning seat 3, thereby ensuring that the first connector 5 can be smoothly separated from the headrest rod 21.

[0043] Depend on Figure 8 It can be seen that the upper end of the guide ridge 42 is constructed with a structure that is narrow at the top and wide at the bottom. Combined with the structure design of the opening at the lower end of the first guide groove 33, the guide ridge 42 can smoothly enter the first guide groove 33 from bottom to top during the process of the headrest rod 21 driving the second connector 4 to move upward, thus ensuring the smoothness of the height adjustment of the headrest rod 21.

[0044] Please refer to Figure 8 The second connector 4 is equipped with a support platform 41, which is then combined with... Figure 2 The elastic support assembly includes a support block 6 and an elastic component 7. The upper end of the support block 6 is rotatably mounted in the positioning seat 3. The elastic component 7 is installed between the support block 6 and the positioning seat 3. The elastic component 7 applies an elastic thrust that causes the support block 6 to tilt and abut against one side of the support platform 41, that is, there is an angle between the sliding direction of the second connector 4 and the support surface of the support block 6. When the first connector 5 and the second connector 4 are inserted, moving the headrest rod 21 downward can overcome the thrust of the elastic component 7, forcing the support block 6 to rotate, thereby driving the first connector 5 and the second connector 4 to move downward synchronously.

[0045] Based on this, after the headrest rod 21 is pulled upwards, the second connector 4 is restricted to its highest moving position. The thrust applied by the elastic component 7 causes the support block 6 to tilt and remain within the positioning seat 3, thereby creating a limiting resistance on the support platform 41. This ensures that the second connector 4 can be stably maintained in its highest moving position, preventing it from falling downwards. When the first connector 5 and the second connector 4 are connected, adjusting the height of the headrest rod 21 downwards overcomes the pressure of the elastic component 7, forcing the support block 6 to rotate around the pivot point, thus releasing the limiting constraint on the second connector 4. The headrest rod 21 then drives the first connector 5 and the second connector 4 to move downwards synchronously. During the upward pulling of the headrest rod 21, the support block 6 can return to its original position under the action of the elastic component 7. Throughout the adjustment process, the elastic component 7 ensures that there is always an angle between the sliding direction of the second connector 4 and the support block 6, thus ensuring that the second connector 4 can remain stably stationary at any height position on the positioning seat 3 without slipping. This prevents the connector from falling during movement and causing connection failure, improving the overall structural connection reliability and operational safety.

[0046] Revisit Figure 3 and Figure 4 To ensure balanced force distribution, in this embodiment, two sets of support blocks 6 and elastic components 7 are provided, each corresponding to the other. The two sets of support blocks 6 are respectively located at both ends of the positioning seat 3 in the width direction, ensuring structural stability and effectively preventing the second connector 4 from tilting. This ensures that the second connector 4 remains centered and coaxial during its up-and-down movement, making the insertion state with the first connector 5 more stable and reliable. A clearance gap exists between the two sets of support blocks 6 to allow the second connector 4 to move downwards, providing a channel for its downward movement, avoiding interference, and ensuring the smoothness of the headrest rod 21 driving the connector downwards synchronously.

[0047] like Figure 9 As shown, the upper end of the support block 6 is provided with a connecting part 61 that is perpendicular to the support block 6 and extends outward. Figure 3 and Figure 6 The connecting part 61 is used for rotatable installation within the positioning seat 3. With this design, the connecting part 61 provides a stable fulcrum for the support block 6, allowing the support block 6 to rotate more flexibly and stably within the positioning seat 3.

[0048] Combination Figure 3 and Figure 4 As shown, in this embodiment, the elastic component 7 is a torsion spring, which is sleeved on the connecting part 61. The two ends of the torsion spring are respectively connected to the inner wall of the positioning seat 3 and the support block 6. The torsion spring has the technical advantages of compact installation and small space occupation. The torsion spring can provide the support block 6 with a continuous tilting force against one side of the support platform 41, ensuring that the support block 6 stably maintains the limited posture when no external force is applied, and providing stable support for the second connector 4.

[0049] Please refer to Figure 9 The supporting block 6 is provided with a limiting groove 62 extending along its length, and one end of the support platform 41 contacts the limiting groove 62. Figure 3 As shown, during the up-and-down movement of the second connector 4, both ends of the support platform 41 slide within the two limiting grooves 62. The limiting grooves 62 provide a guiding channel for the movement of the support platform 41, ensuring the stability of the up-and-down movement of the second connector 4. Figure 7 and Figure 8 As can be seen, in this embodiment, the limiting groove 62 of the support block 6 is located radially outside the second connector 4, and the support platform 41 protrudes radially outward along the second connector 4 and is supported on the limiting groove 62. This design can prevent rotational interference between the support block 6 and the second connector 4.

[0050] Further, refer to Figure 9 The lower end of the limiting groove 62 has a lower stop block 621, which limits the lowest position of the second connector 4. When the second connector 4 is in the lowest moving position, refer to Figure 10 The two ends of the support platform 41 can rest against the lower stop block 621 to prevent the headrest rod 21 from moving further downward.

[0051] Reference Figure 7 In this embodiment, the support platform 41 has a square structure. Since the two sets of support blocks 6 are symmetrically designed, the limiting grooves 62 of the two sets of support blocks 6 correspond exactly to the two opposite corners of the support platform 41. This design can ensure that the second connector 4 can maintain a balanced and stable state when it is stationary or moving up and down, and avoid tilting or shifting.

[0052] Further, refer to Figure 5 , Figure 7 and Figure 8 The positioning base 3 has two opposing inner sidewalls each equipped with a second guide groove 32 extending along its height direction. The support platform 41 has a guide protrusion 411 on the side corresponding to the second guide groove 32, which is adapted to the second guide groove 32. The guide protrusion 411 can slide up and down along the second guide groove 32. This structural design ensures that the second connector 4 can only move up and down along the axis of the positioning base 3, effectively preventing circumferential rotation and radial offset of the second connector 4. This ensures that the first connector 5 and the second connector 4 remain coaxially aligned during insertion, avoiding problems such as poor contact or excessive insertion / removal resistance due to misalignment, further enhancing the reliability and stability of the overall structure.

[0053] In this embodiment, the second guide groove 32 is also a structure with a closed upper end and an open lower end. That is, the upper end of the second guide groove 32 has an upper stop. When the second connector 4 is in the highest moving position, the guide protrusion 411 can abut against the lower end of the upper stop, thereby restricting the second connector 4 from moving further upward. This structure, together with the aforementioned limiting structure, forms a dual protection mechanism, which can more accurately and reliably ensure that the first connector 5 and the second connector 4 separate at the highest moving position.

[0054] like Figure 5 As shown, in this embodiment, the lower end of the second guide groove 32 has an inverted V-shaped structure. In practical applications, the structure of the positioning seat 3 and the second guide groove 32 does not need to be designed to be too long. When the second connector 4 moves downward, the guide protrusion 411 can pass over the second guide groove 32 and continue to move downward. The inverted V-shaped structure design at the lower end of the second guide groove 32 allows the guide protrusion 411 to enter the second guide groove 32 more smoothly when the second connector 4 moves upward, thereby further improving the smoothness of the headrest rod 21 height adjustment.

[0055] Greetings Figure 9 The upper part of the supporting block 6 is provided with an extension part 63, which is combined with Figure 2 and Figure 4 As shown, the extension 63 corresponds to the highest moving position of the second connector 4, so that the support platform 41 can be more stably supported in the highest position.

[0056] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A headrest electrical connector plug-in and positioning structure, comprising a backrest (1) and a headrest (2) connected to the upper end of the backrest (1), wherein the upper part of the backrest (1) is provided with a guide sleeve (11) extending along its height direction, the headrest (2) has a headrest rod (21) adapted to the guide sleeve (11), the headrest rod (21) being movable up and down along the guide sleeve (11), and the lower end of the headrest rod (21) is provided with a first connector (5), characterized in that: The upper end of the backrest (1) is fixedly installed with a positioning seat (3), and a second connector (4) that can move up and down is preset in the positioning seat (3). The first connector (5) and the second connector (4) can be separated and plugged in.

2. The headrest electrical connector insertion and removal positioning structure according to claim 1, characterized in that: The positioning seat (3) is provided with an elastic support component. The second connector (4) is supported on the elastic support component. During the up and down movement of the second connector (4), the elastic support component continuously applies an upward thrust to the second connector (4). The second connector (4) has a maximum movable position within the positioning seat (3), at which the first connector (5) and the second connector (4) can be separated and plugged in.

3. The headrest electrical connector insertion and removal positioning structure according to claim 2, characterized in that: The positioning seat (3) is provided with a guide hole (31) on its upper part. When the second connector (4) is in the highest moving position, the upper end of the second connector (4) extends into the guide hole (31) at least partially.

4. The headrest electrical connector insertion and removal positioning structure according to claim 3, characterized in that: A limiting structure is provided between the guide hole (31) and the second connector (4), the limiting structure being used to separate the first connector (5) and the second connector (4) at the highest moving position.

5. The headrest electrical connector insertion and removal positioning structure according to claim 2, characterized in that: The second connector (4) is provided with a support platform (41). The elastic support assembly includes a support block (6) and an elastic component (7). The upper end of the support block (6) is rotatably mounted in the positioning seat (3). The elastic component (7) is installed between the support block (6) and the positioning seat (3). The elastic component (7) applies an elastic thrust that causes the support block (6) to tilt against one side of the support platform (41). When the first connector (5) and the second connector (4) are connected, the headrest rod (21) moves downward, which can overcome the thrust of the elastic component (7) and force the support block (6) to rotate, thereby driving the first connector (5) and the second connector (4) to move downward synchronously.

6. The headrest electrical connector insertion and removal positioning structure according to claim 5, characterized in that: The number of the support block (6) and the elastic component (7) are both provided in two sets, and they correspond one to one. The two sets of support blocks (6) are respectively set at both ends of the positioning seat (3). There is a clearance between the two sets of support blocks (6), and the clearance is used to allow the second connector (4) to move downward.

7. The headrest electrical connector insertion and removal positioning structure according to claim 5, characterized in that: The upper end of the support block (6) is provided with a connecting part (61) that is perpendicular to the support block (6) and extends outward. The connecting part (61) is rotatably installed in the positioning seat (3).

8. The headrest electrical connector insertion and removal positioning structure according to claim 7, characterized in that: The elastic component (7) is a torsion spring, which is sleeved on the connecting part (61).

9. The headrest electrical connector insertion and removal positioning structure according to claim 5 or 6, characterized in that: The support block (6) is provided with a limiting groove (62) extending along its length direction. One end of the support platform (41) slides against the limiting groove (62). The lower end of the limiting groove (62) has a lower stop block (621).

10. The headrest electrical connector insertion and removal positioning structure according to claim 5, characterized in that: The support platform (41) has a square structure. The inner wall of the positioning seat (3) is provided with a second guide groove (32) extending along its height direction. The support platform (41) is provided with a guide protrusion (411) that is adapted to the second guide groove (32) on one side. The guide protrusion (411) can slide up and down along the second guide groove (32).

11. The headrest electrical connector insertion and removal positioning structure according to claim 5, characterized in that: The support block (6) has an extension part (63) on its upper part, which corresponds to the highest moving position of the second connector (4) so ​​that the support platform (41) can be more stably supported at the highest position.

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