Headrest assembly, seat, and vehicle

Abstract

The application provides a headrest assembly, a seat and a vehicle. The headrest assembly comprises a base, a headrest, an expansion and contraction element and a gas pump. The upper and lower ends of the expansion and contraction element are connected with the base and the headrest respectively. The expansion and contraction element is provided with a ventilation valve, which comprises an open state and a closed state. When the ventilation valve is in the closed state, the gas pump and the expansion and contraction element are hermetically arranged. When the ventilation valve is in the open state, the gas pump can inflate the expansion and contraction element to make the expansion and contraction element expand along the height direction in the inflation state; or when the ventilation valve is in the open state, the expansion and contraction element can deflate outward through the ventilation valve to make the expansion and contraction element contract along the height direction in the deflation state. The headrest assembly of the application inflates the expansion and contraction element by the gas pump to make it expand, and deflates it by the ventilation valve to realize the contraction of the expansion and contraction element. While realizing stepless adjustment and improving the user experience, the structure is simplified, a complex transmission mechanism is not needed, and the production cost is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a headrest assembly, a seat, and a vehicle. Background Technology

[0002] As vehicle technology continues to advance, people's demands for vehicle comfort are gradually increasing. Headrest components are crucial parts of seats, used to alleviate neck fatigue and provide impact cushioning protection. To ensure vehicle comfort, current headrest components generally offer height adjustment.

[0003] Traditional headrest height adjustment methods include mechanical and electric adjustment. Mechanical adjustment changes the headrest height by fixing it in different positions. While simple in structure, it cannot achieve stepless adjustment, resulting in a poor user experience. Electric adjustment, on the other hand, can achieve stepless adjustment through a motor and transmission structure, but its structure is complex and its cost is higher. Utility Model Content

[0004] This application provides a headrest assembly, a seat, and a vehicle to solve related technical problems.

[0005] A first aspect of this application provides a headrest assembly, comprising: a base, a headrest, an expansion member, and an air pump; the upper and lower ends of the expansion member are respectively connected to the base and the headrest; the expansion member is provided with an air valve, the air valve having an open state and a closed state; when the air valve is in the closed state, the air pump is isolated from the expansion member; when the air valve is in the open state, the air pump can inflate the expansion member, so that the expansion member expands along the height direction in the inflated state; or, when the air valve is in the open state, the expansion member can deflate through the air valve, so that the expansion member contracts along the height direction in the deflated state.

[0006] The headrest assembly of this application uses an air pump to inflate the expansion and contraction components, causing them to expand, and then releases air through a vent valve to achieve contraction. The headrest height is adjusted by the expansion and contraction of these components, achieving stepless adjustment, improving the user experience, simplifying the structure, eliminating the need for complex transmission mechanisms, and reducing production costs.

[0007] Furthermore, the device also includes an elastic element arranged along the height direction, with its two ends connected to the headrest and the base, respectively. By incorporating the elastic element, it provides support and assists in repositioning, further improving the smoothness of the headrest's height adjustment.

[0008] Furthermore, in the deflated state, the elastic element is stretched to compress the expansion member during its retraction, causing the expansion member to release gas outwards. The elastic force generated by the elastic element during retraction can be applied to the expansion member, accelerating its contraction rate and increasing the gas release speed, thereby improving the headrest's adjustment efficiency.

[0009] Furthermore, the vent valve includes an inflation valve and an exhaust valve, and the air pump includes an inflation pump assembled to the inflation valve and an exhaust pump assembled to the exhaust valve. By independently setting the inflation pump and the exhaust pump, the two air pumps can be controlled separately to form multiple inflation / deflation modes, improving the user experience.

[0010] Furthermore, the air pump can extract air from the expansion joint. By using a single air pump to complete both the inflation and deflation processes of the expansion joint, production costs are reduced.

[0011] Furthermore, the number of elastic elements is set to at least two, and the expansion member is disposed between the two elastic elements. By providing multiple elastic elements, the smoothness of the headrest height adjustment is further improved.

[0012] Furthermore, the base includes a frame and a guide rod, the guide rod being arranged along the height direction; the headrest includes a headrest bracket, and the guide rod is slidably mounted to the headrest bracket. By setting the guide rod to guide the movement of the headrest, the smoothness of the headrest's movement is improved.

[0013] Furthermore, the number of guide rods is set to at least two, and the expansion member is disposed between the two guide rods. By providing multiple guide rods, the smoothness of the headrest's movement is further improved.

[0014] Furthermore, it also includes an air tube, the two ends of which are connected to the expansion joint and the air pump, respectively. By providing an air tube to connect the expansion joint and the air pump, it is not necessary to connect the air pump directly to the expansion joint, thus increasing the flexibility in the arrangement of the air pump.

[0015] Furthermore, the base is provided with a through hole, through which the air tube passes and connects to the expansion joint. By providing a through hole on the base and inserting the air tube inside the base, the space occupied by the air tube outside the base can be reduced, improving the structural compactness of the headrest assembly.

[0016] Furthermore, the through hole is positioned along the height direction and opposite to the expansion member, and the air tube passes through the through hole from the bottom and connects to the expansion member. The air tube connects directly to the expansion member after passing through the through hole, without needing to extend further outward, thus improving the structural compactness of the headrest assembly.

[0017] A second aspect of this application provides a seat including the aforementioned headrest assembly. Because the headrest assembly offers a better user experience and lower cost, the user experience and production cost of the seat in this application are both optimized.

[0018] A third aspect of this application provides a vehicle including the aforementioned seat. Because the user experience and production costs of the seat are optimized, the driving experience of the vehicle is improved and manufacturing costs are reduced.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0021] Figure 1 This is a structural diagram of a headrest assembly according to an exemplary embodiment of this application; Figure 2 yes Figure 1 A structural diagram of the headrest assembly from another angle; Figure 3 This is a partial structural diagram of another headrest component in an exemplary embodiment of this application.

[0022] Reference numerals: Base 10; Through hole 100; Frame 11; Mounting part 111; Guide part 112; Guide rod 12; Headrest 20; Headrest bracket 21; Expansion / contraction element 30; Vent valve 300; Inflation valve 301; Exhaust valve 302; Air pump 40; Inflation pump 41; Exhaust pump 42; Elastic element 50; Air pipe 60. Detailed Implementation

[0023] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0024] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0025] Traditional headrest height adjustment methods include mechanical and electric adjustment. Mechanical adjustment changes the headrest height by fixing it in different positions; it has a simple structure but cannot achieve stepless adjustment, resulting in a poor user experience. Electric adjustment, while achieving stepless adjustment through a motor and transmission structure, has a complex structure and higher cost. This application provides a headrest assembly, a seat, and a vehicle to solve the related technical problems.

[0026] like Figure 1 As shown, this application provides a headrest assembly, including a base 10, a headrest 20, an expansion member 30, an air pump 40, an elastic member 50, and an air tube 60. The upper and lower ends of the expansion member 30 are respectively connected to the base 10 and the headrest 20. The expansion member 30 is provided with an air valve 300, which includes an open state and a closed state.

[0027] When the vent valve 300 is closed, the expansion joint 30 is sealed and does not inflate or deflate. When the vent valve 300 is open, the air pump 40 can inflate the expansion joint 30, causing it to expand along its height. Alternatively, when the vent valve 300 is open, the expansion joint 30 can release air through the vent valve 300, causing it to contract along its height.

[0028] The headrest assembly of this application uses an air pump 40 to inflate the expansion member 30, causing it to expand and raising the headrest 20. Simultaneously, an air vent 300 releases air, causing the expansion member 30 to contract and lower the headrest 20. This height adjustment of the headrest 20 through the expansion and contraction of the expansion member 30 achieves stepless adjustment, improves the user experience, simplifies the structure, eliminates the need for complex transmission mechanisms, and reduces production costs.

[0029] The air pump 40 can be an electric air pump or a manual air pump. In this embodiment, the air pump 40 can draw air from the expansion member 30 to release the air from the expansion member 30. Inflation and deflation of the expansion member 30 can be achieved with a single air pump 40, reducing production costs. The air pump 40 and the vent valve 300 can be connected to a certain linkage structure or linkage circuit. When the air pump 40 starts working, the vent valve 300 opens synchronously. When the air pump 40 stops working, the vent valve 300 closes synchronously. In other embodiments, the number of air pumps 40 can also be multiple.

[0030] The base 10 has a through hole 100 for the air tube 60 to pass through. The base 10 includes a frame 11 and a guide rod 12. The guide rod 12 is arranged along the height direction. The headrest includes a headrest bracket 21 and a headrest body (not shown). The guide rod 12 is slidably mounted to the headrest bracket 21. By setting the guide rod 12 to guide the movement of the headrest, the smoothness of the movement of the headrest 20 is improved.

[0031] The number of guide rods 12 is set to at least two, and the expansion joint 30 is disposed between the two guide rods 12. By setting multiple guide rods 12, the smoothness of movement of the headrest 20 is further improved.

[0032] Please refer to the following: Figure 2 As shown, the frame 11 includes a mounting part 111 and a guide part 112. The guide rod 12 is fixed to the mounting part 111. The guide part 112 is slidably connected to the frame 11 to assist in guiding.

[0033] The elastic element 50 is arranged along the height direction. Both ends of the elastic element 50 are connected to the headrest 20 and the base 10, respectively. Specifically, one end of the elastic element 50 is connected to the frame 11, and the other end is connected to the headrest support 21. By setting the elastic element 50, it can provide support and assist in return to its original position, further improving the smoothness of the headrest 20's height adjustment. The elastic element 50 can be a spring, and the specific type is not limited.

[0034] The number of elastic elements 50 is set to at least two. An expansion element 30 is disposed between the two elastic elements 50. By setting multiple elastic elements 50, the smoothness of the height adjustment of the headrest 20 is further improved.

[0035] In the deflated state, the elastic element 50 is stretched to compress the expansion member 30 during its retraction, causing the expansion member 30 to release air outwards. The elastic force generated by the elastic element 50 during retraction can be applied to the expansion member 30, accelerating its contraction rate and increasing the air release speed, thereby improving the position adjustment efficiency of the headrest 20.

[0036] When the headrest 20 is in its lowest position, the elastic element 50 can be in a compressed state. Figure 1In the middle, the headrest 20 is in a lower position. When it is necessary to raise the headrest 20, the user presses the start switch of the air pump 40 and opens the air valve 300. The air pump 40 inflates the expansion member 30, causing the expansion member 30 to expand. The elastic member 50 assists in pushing the headrest support 21 to rise.

[0037] When the headrest 20 is in its highest position, the elastic element 50 can be in a stretched state. Figure 2 In this configuration, the headrest 20 is positioned at a higher level. When it is necessary to lower the headrest 20, taking the use of a single air pump 40 for deflation as an example, the user presses the start switch of the air pump 40 and opens the vent valve 300, causing the gas filled in the expansion member 30 to be expelled. The expansion member 30 then begins to contract, and the elastic member 50 assists in pulling the headrest support 21 lower. In other embodiments, such as those where deflation is achieved through the retraction of the elastic member 50, the air pump 40 remains in a non-operating state, and the user can manually open the vent valve 300 to release air, with the elastic member 50 assisting in pulling the headrest support 21 lower.

[0038] Once the headrest 20 reaches the appropriate position, the vent valve 300 closes, and a sealed air chamber is formed inside the expansion member 30, which keeps the air pressure of the expansion member 30 stable, thus fixing the headrest 20 at the corresponding height.

[0039] In the embodiment where inflation and deflation are achieved via a single air pump 40, the inflation and deflation rate of the air pump 40 is adjustable. The user can adjust the inflation and deflation rate of the air pump 40 to change the movement speed of the headrest 20, making it easier for the user to find a comfortable position to lean on. When the headrest 20 is far from the user's comfortable position, the inflation and deflation rate of the air pump 40 can be increased, thus increasing the movement speed of the headrest 20. When the headrest 20 is close to the user's comfortable position, the inflation and deflation rate of the air pump 40 can be decreased, making the movement speed of the headrest 20 more gradual, facilitating fine-tuning by the user to find a comfortable position.

[0040] In embodiments where multiple air pumps 40 are provided, please refer to all of them. Figure 3 As shown, the vent valve 300 includes an inflation valve 301 and an exhaust valve 302. The air pump 40 includes an inflation pump 41 assembled to the inflation valve 301 and an exhaust pump 42 assembled to the exhaust valve 302. By independently setting the inflation pump 41 and the exhaust pump 42, the two air pumps 40 can be controlled separately to form multiple inflation and deflation modes, improving the user experience.

[0041] For example, when the expansion member 30 is inflated, the inflation valve 301 can remain open, the deflation valve 302 can remain closed, and the inflation pump 41 operates at maximum power to achieve higher inflation efficiency, increase the expansion speed of the expansion member 30, and improve the position adjustment rate of the headrest 20. Alternatively, during inflation, both the inflation valve 301 and the deflation valve 302 can remain open, and the inflation pump 41 inflates at a higher power. At this time, the deflation pump 42 can deflate at a lower power to adjust the expansion speed of the expansion member 30 to ensure the position adjustment accuracy of the headrest.

[0042] Similarly, when the expansion member 30 is venting air, the vent valve 302 can remain open, the inflation valve 301 can remain closed, and the vent pump 42 operates at maximum power to achieve higher inflation efficiency, improve the contraction speed of the expansion member 30, and enhance the position adjustment rate of the headrest 20. Alternatively, during venting, both the inflation valve 301 and the vent valve 302 can remain open, and the vent pump 42 vents air at a higher power. In this case, the inflation pump 41 can inflate air at a lower power to adjust the expansion and contraction speed of the expansion member 30, ensuring the accuracy of the headrest 20's position adjustment.

[0043] The two ends of the air pipe 60 are connected to the expansion joint 30 and the air pump 40, respectively. By setting the air pipe 60 to connect the expansion joint 30 and the air pump 40, it is not necessary to connect the air pump 40 directly to the expansion joint 30, which improves the flexibility of the air pump 40's arrangement.

[0044] The base 10 is provided with a through hole 100, through which the air tube 60 passes and connects to the expansion member 30. By providing the through hole 100 on the base 10 and inserting the air tube 60 inside the base 10, the space occupied by the air tube 60 outside the base 10 can be reduced, thus improving the structural compactness of the headrest assembly.

[0045] The through-hole 100 is positioned along the height direction and opposite to the expansion member 30. The air tube 60 passes through the bottom of the through-hole 100 and connects to the expansion member 30. After passing through the through-hole 100, the air tube 60 connects directly to the expansion member 30 without further outward extension, thus improving the structural compactness of the headrest assembly.

[0046] A second aspect of this application provides a seat including the aforementioned headrest assembly. Because the headrest assembly offers a better user experience and lower cost, the user experience and production cost of the seat in this application are both optimized.

[0047] A third aspect of this application provides a vehicle including the aforementioned seat. Because the user experience and production costs of the seat are optimized, the driving experience of the vehicle is improved and manufacturing costs are reduced. The vehicle of this application can be an electric vehicle, a gasoline-powered vehicle, a hybrid vehicle, etc., and the specific type is not limited.

[0048] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A headrest assembly, characterized in that, include: Base, headrest, expansion joints and air pump; The upper and lower ends of the expansion joint are respectively connected to the base and the headrest; The expansion and contraction component is equipped with a vent valve, which includes an open state and a closed state. When the vent valve is closed, the expansion member is sealed; when the vent valve is open, the air pump can inflate the expansion member so that the expansion member expands along the height direction in the inflated state. Alternatively, when the vent valve is in the open state, the expansion member can release air through the vent valve, so that the expansion member contracts along the height direction in the vented state.

2. The headrest assembly according to claim 1, characterized in that, It also includes an elastic element arranged along the height direction, with its two ends connected to the headrest and the base, respectively.

3. The headrest assembly according to claim 2, characterized in that, In the deflated state, the elastic element is stretched to compress the expansion member during the retraction of the elastic element, causing the expansion member to release air outward.

4. The headrest assembly according to claim 1, characterized in that, The vent valve includes an inflation valve and an exhaust valve, and the air pump includes an inflation pump assembled to the inflation valve and an exhaust pump assembled to the exhaust valve.

5. The headrest assembly according to claim 1, characterized in that, The air pump is capable of drawing air from the expansion joint.

6. The headrest assembly according to claim 1, characterized in that, The base includes a frame and a guide rod, the guide rod being arranged along the height direction; the headrest includes a headrest bracket, the guide rod being slidably mounted to the headrest bracket.

7. The headrest assembly according to claim 1, characterized in that, It also includes an air tube, the two ends of which are respectively connected to the expansion joint and the air pump; The base is provided with a through hole, through which the air pipe is connected to the expansion joint.

8. The headrest assembly according to claim 7, characterized in that, The through hole is arranged along the height direction and is positioned opposite to the expansion member. The air tube passes through the through hole from the bottom and connects to the expansion member.

9. A type of seat, characterized in that, include: The headrest assembly as described in any one of claims 1-8.

10. A vehicle, characterized in that, include: The seat as described in claim 9.

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