Headrest, seat and vehicle

Abstract

The invention discloses a headrest, a seat and a vehicle. The headrest comprises a base, an unlocking part, a driving part and a pushing device, the unlocking part is installed on the base, the driving part is installed on the base, the unlocking part has a first state and a second state, in the first state, the unlocking part locks the driving part to the base, in the second state, the unlocking part is separated from the driving part, the driving part rotates relative to the base, and the pushing device pushes the driving part to rotate relative to the base. The driving piece can push the pushing device to move in the first direction away from the base when rotating relative to the base. According to the headrest, the unlocking part is set to be in the first state, so that the space occupation of the headrest in the first direction is effectively reduced, other parts can be more reasonably arranged in a limited space in a vehicle, the number of parts and the complexity are reduced, the machining difficulty and the assembling difficulty in the production process are reduced, and the cost is saved. The unlocking piece is arranged to be in the second state, so that the pushing device can move in the first direction to be away from the base, and the pushing device is close to the passenger to support the head and the neck of the passenger.

Description

Technical Field

[0001] The present application relates to the technical field of headrests, and in particular to a headrest, a seat and a vehicle. Background Art

[0002] In the related art, the headrest mostly relies on the pressure plate of the seat back to drive the pushing device to move in the first direction to support the head and neck of the occupant, but this structure is too complicated and occupies a large space in the first direction, which wastes costs. Summary of the invention

[0003] The present application aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the present application proposes a headrest that is conducive to reducing the space occupied in the first direction and saving costs.

[0004] The application also proposes a seat with the headrest.

[0005] The application also proposes a vehicle having the seat.

[0006] The headrest according to the embodiment of the present application includes a base, an unlocking member, a driving member and a pushing device, wherein the unlocking member is installed on the base, and the driving member is installed on the base, wherein the unlocking member has a first state and a second state, in the first state, the unlocking member locks the driving member to the base, in the second state, the unlocking member is separated from the driving member, and the driving member rotates relative to the base, and when the driving member rotates relative to the base, it can push the pushing device to move in a first direction away from the base.

[0007] According to the headrest of the embodiment of the present application, by setting the unlocking member in the first state, the space occupied by the headrest in the first direction is effectively reduced, which helps to more reasonably arrange other components in the limited space inside the vehicle, reduces the number and complexity of parts, reduces the difficulty of processing and assembly in the production process, and saves costs. By setting the unlocking member in the second state, the pushing device can move in the first direction away from the base, so that the pushing device is close to the occupant to support the occupant's head and neck.

[0008] According to some embodiments of the present application, the unlocking member includes a shell and a latch head, the shell is installed on the base, the latch head can move relative to the shell, and a driving limit groove is provided on the driving member. In the first state, the latch head extends into the driving limit groove, and in the second state, the latch head withdraws from the driving limit groove.

[0009] According to some embodiments of the present application, the headrest also includes an elastic member, one end of which is connected to the base, and the other end of which is connected to the driving member, and the elastic member is used to apply an elastic force to the driving member to drive the driving member to rotate relative to the base.

[0010] According to some embodiments of the present application, the base has a positioning cavity, the driving member includes a positioning portion, the positioning portion is arranged in the positioning cavity, and the other end of the elastic member is connected to the positioning portion.

[0011] According to some embodiments of the present application, the driving member further includes a driving portion, which is connected to the positioning portion. When the positioning portion rotates relative to the base, the driving portion rotates with the positioning portion to push the pushing device to move in the first direction.

[0012] According to some embodiments of the present application, one end of the positioning cavity is open, and a limiting baffle is provided at the opening of the positioning cavity. In a plane perpendicular to the first direction, the projection of the limiting baffle in the plane is at least partially located within the projection range of the positioning part in the plane, so as to limit the positioning part in the positioning cavity.

[0013] According to some embodiments of the present application, the elastic member is a torsion spring, which includes a torsion spring body, a first arm and a second arm, the first arm being connected to the torsion spring body, the first arm extending into a first torsion spring hole on the base, the second arm being connected to the torsion spring body, the second arm extending into the second torsion spring hole on the positioning portion.

[0014] According to some embodiments of the present application, the pushing device includes a transmission member and a pushing member. When the driving member rotates relative to the base, it can push the transmission member to rotate in the same direction and push the transmission member to move toward the first direction. When the transmission member moves, it can drive the pushing member to move along the first direction.

[0015] According to some embodiments of the present application, the driving portion includes a driving paddle, and the transmission member includes a transmission arm. When the driving member rotates relative to the base, the driving paddle drives the transmission member to rotate in the same direction by pushing the transmission arm.

[0016] According to some embodiments of the present application, the transmission member includes a first outer cylinder portion and a second outer cylinder portion, the second outer cylinder portion is located radially outside the first outer cylinder portion, the second outer cylinder portion is connected to the first outer cylinder portion through the transmission arm, and the drive paddle extends between the second outer cylinder portion and the first outer cylinder portion.

[0017] According to some embodiments of the present application, the driving portion includes an inner cylinder portion, the inner cylinder portion and the driving paddle are both connected to the positioning portion, the driving paddle is located radially outside the inner cylinder portion, there is a gap between the driving paddle and the inner cylinder portion, and the first outer cylinder portion is located in the gap.

[0018] According to some embodiments of the present application, the transmission member includes a transmission guide bar, which is spirally arranged around the first direction, and the base has a base protrusion and a base hook. The transmission guide bar is clamped between the base protrusion and the base hook, and the base protrusion stops at the surface of the transmission guide bar facing the base, and the base hook is located on the side of the transmission guide bar away from the base.

[0019] According to some embodiments of the present application, a transmission guide groove recessed toward the direction of the base is formed on the side of the transmission guide strip facing away from the base, and the base hook at least partially extends into the transmission guide groove.

[0020] According to some embodiments of the present application, a transmission stop rib is provided at one end of the transmission guide bar close to the base, and the transmission member stops rotating when the transmission stop rib is rotated to contact the base hook.

[0021] According to some embodiments of the present application, the pushing member includes a pushing guide bar, which is spirally arranged around the first direction, and the transmission member has a transmission protrusion and a transmission hook. The pushing guide bar is clamped between the transmission protrusion and the transmission hook, and the transmission protrusion stops at the surface of the pushing guide bar facing the transmission member, and the transmission hook is located on the side of the pushing guide bar away from the transmission member.

[0022] According to some embodiments of the present application, a side of the pushing guide strip facing away from the transmission member forms a pushing guide groove recessed in the direction of the transmission member, and the transmission hook at least partially extends into the pushing guide groove.

[0023] According to some embodiments of the present application, a push stop rib is provided on the push guide strip, and the push member stops moving when the transmission member rotates until the transmission hook contacts the push stop rib.

[0024] According to some embodiments of the present application, the pushing member includes a pushing plate and a pushing cylinder, the pushing cylinder is connected to a side of the pushing plate facing the transmission member, and the pushing guide strip is arranged on an outer circumferential surface of the pushing cylinder.

[0025] According to some embodiments of the present application, a guide block is provided on the push plate, the base has a guide groove, the guide block and the guide groove both extend along the first direction, and the guide block cooperates with the guide groove in a guiding manner.

[0026] According to some embodiments of the present application, the headrest further includes a locking member, which is mounted on the base and is used to prevent the transmission member from moving in a direction opposite to the first direction.

[0027] According to some embodiments of the present application, the locking member has a locking tooth, and the transmission member has a transmission tooth. When the driving member drives the transmission member to rotate forward, the locking tooth engages with the transmission tooth for transmission. When the transmission member has a tendency to rotate reversely, the locking tooth locks the transmission tooth.

[0028] According to some embodiments of the present application, the transmission member includes a transmission guide bar, which is spirally arranged around the first direction, and the transmission teeth are provided on a side of the transmission guide bar facing the base.

[0029] According to some embodiments of the present application, the unlocking member switches from the first state to the second state upon receiving a trigger signal.

[0030] A seat according to another embodiment of the present application includes the above-mentioned headrest.

[0031] According to another aspect of the seat of the present application, the headrest is set in the first state by setting the unlocking member, which effectively reduces the space occupied by the headrest in the first direction, helps to more reasonably arrange other components in the limited space inside the vehicle, reduces the number and complexity of parts, reduces the difficulty of processing and assembly in the production process, and saves costs. By setting the unlocking member in the second state, the pushing device can move in the first direction away from the base, so that the pushing device is close to the occupant to support the occupant's head and neck.

[0032] A vehicle according to yet another embodiment of the present application includes the above-mentioned seat.

[0033] According to another embodiment of the present application, the headrest in the seat of the vehicle is set in the first state by setting the unlocking member in the first state, which effectively reduces the space occupied by the headrest in the first direction, helps to more reasonably arrange other components in the limited space inside the vehicle, reduces the number and complexity of parts, reduces the difficulty of processing and assembly in the production process, and saves costs. By setting the unlocking member in the second state, the pushing device can move in the first direction away from the base, so that the pushing device is close to the occupant to support the occupant's head and neck.

[0034] According to some embodiments of the present application, the unlocking member switches from the first state to the second state when receiving a vehicle rear-end collision signal.

[0035] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a three-dimensional exploded view of a headrest according to an embodiment of the present application;

[0037] Figure 2 is a cross-sectional view of a headrest in a first state according to an embodiment of the present application;

[0038] Figure 3 is a cross-sectional view of a headrest in a second state according to an embodiment of the present application;

[0039] Figure 4 is a three-dimensional schematic diagram of an elastic member according to an embodiment of the present application;

[0040] Figure 5 is a three-dimensional schematic diagram of a driving member according to an embodiment of the present application;

[0041] Figure 6 is a three-dimensional schematic diagram of a base according to an embodiment of the present application;

[0042] Figure 7 is a three-dimensional schematic diagram of a base from another viewing angle according to an embodiment of the present application;

[0043] Figure 8 is a schematic diagram of a transmission member according to an embodiment of the present application;

[0044] Fig. 9 is a schematic diagram of a transmission member from another perspective according to an embodiment of the present application;

[0045] Fig.10 is a schematic diagram of a pushing member according to an embodiment of the present application;

[0046] Fig.11 is a schematic diagram of a pusher according to an embodiment of the present application from another perspective;

[0047] Fig.12 is a structural diagram of a base, an elastic member, a driving member and an unlocking member according to an embodiment of the present application;

[0048] Fig.13 is an initial static installation diagram of a transmission member according to an embodiment of the present application;

[0049] Fig.14 is an assembly diagram of a headrest in a first state according to an embodiment of the present application;

[0050] Fig.15 is an assembly diagram of a headrest in a second state according to an embodiment of the present application;

[0051] Fig.16 is a schematic diagram of a seat according to an embodiment of the present application;

[0052] Fig.17 is a schematic diagram of a vehicle according to an embodiment of the present application.

[0053] Reference numerals:

[0054] Vehicle 100, seat 20, headrest 10, base 1, positioning cavity 11, limiting baffle 111, first torsion spring hole 12, base protrusion 13, base hook 14, guide groove 15, drive cavity 16, base limiting groove 17, unlocking member 2, shell 21, latch head 22, drive member 3, drive limiting groove 31, positioning portion 32, second torsion spring hole 321, drive portion 33, drive paddle 331, inner cylinder portion 332, pushing device 4, transmission member 41, transmission arm 411, first outer cylinder portion 412, second Outer cylinder portion 413, transmission guide bar 414, transmission guide groove 415, transmission stop rib 416, transmission protrusion 417, transmission hook 418, transmission tooth 419, pushing member 42, pushing guide bar 421, pushing guide groove 4211, pushing stop rib 4212, pushing plate 422, guide block 4221, pushing cylinder 423, elastic member 5, torsion spring body 51, first arm 52, second arm 53, locking member 6, locking tooth 61, locking elastic member 7, pushing member outer cover 8, base outer cover 9. DETAILED DESCRIPTION

[0055] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0056] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] Combine the following Figure 1-Figure 16 The headrest 10, the seat 20 having the headrest 10 and the vehicle 100 having the seat 20 according to the embodiment of the present application are described in detail. For the convenience of description, the application of the headrest 10 to a vehicle seat is taken as an example for explanation.

[0058] Reference Figure 1-Figure 3 As shown, the headrest 10 according to the embodiment of the present application includes a base 1, an unlocking member 2, a driving member 3 and a pushing device 4, the unlocking member 2 is installed on the base 1, and the driving member 3 is installed on the base 1, wherein the unlocking member 2 has a first state and a second state, in the first state, the unlocking member 2 locks the driving member 3 on the base 1, in the second state, the unlocking member 2 is separated from the driving member 3, and the driving member 3 rotates relative to the base 1, and when the driving member 3 rotates relative to the base 1, it can push the pushing device 4 to move in a first direction away from the base 1.

[0059] Specifically, the driving member 3 is located on the side of the base 1 close to the occupant, and the pushing device 4 is located on the side of the driving member 3 close to the occupant. When the unlocking member 2 is in the first state, the size of the headrest 10 in the first direction can be made smaller, which effectively reduces the space occupied by the headrest 10 in the first direction, helps to more reasonably arrange other components in the limited space inside the vehicle, reduces the number and complexity of parts, reduces the processing difficulty and assembly difficulty of the production process, and saves costs. When the unlocking member 2 is in the second state, the driving member 3 can push the pushing device 4 to move in the first direction away from the base 1, so that the pushing device 4 is close to the occupant to support the occupant's head and neck.

[0060] It should be noted that the first direction mentioned above is Figure 1 F1 direction shown.

[0061] In the related art, the headrest mostly relies on the pressure plate of the seat back to drive the pushing device to move in the first direction to support the head and neck of the occupant, but this structure is too complicated and occupies a large space in the first direction, which wastes costs.

[0062] According to the headrest 10 of the embodiment of the present application, by setting the unlocking member 2 in the first state, the space occupied by the headrest 10 in the first direction is effectively reduced, which helps to more reasonably arrange other components in the limited space inside the vehicle, reduces the number and complexity of parts, reduces the processing difficulty and assembly difficulty of the production process, and saves costs. By setting the unlocking member 2 in the second state, the pushing device 4 can move in the first direction to move away from the base 1, so that the pushing device 4 is close to the occupant to support the occupant's head and neck.

[0063] In some embodiments of the present application, see Figure 1 , Fig.12As shown, the unlocking member 2 includes a housing 21 and a latch head 22. The housing 21 is mounted on the base 1. The latch head 22 can move relative to the housing 21. A driving limit groove 31 is provided on the driving member 3. In the first state, the latch head 22 extends into the driving limit groove 31. In the second state, the latch head 22 withdraws from the driving limit groove 31. Specifically, the latch head 22 can move relative to the housing 21, such as telescopic, to achieve the switching of locking and unlocking of the driving member 3. When the latch head 22 extends into the driving limit groove 31, the rotation of the driving member 3 can be effectively restricted. When the latch head 22 withdraws from the driving limit groove 31, the driving member 3 can rotate relative to the base 1 and can push the pushing device 4 to move in the first direction away from the base 1.

[0064] Optionally, the telescopic structure of the latch head 22 in the unlocking member 2 can be achieved through mechanical control, electromagnetic control, or other control methods, which are not listed here one by one.

[0065] In some embodiments of the present application, see Figure 1 , Figure 4 As shown, the headrest 10 also includes an elastic member 5, one end of the elastic member 5 is connected to the base 1, and the other end of the elastic member 5 is connected to the driving member 3. The elastic member 5 is used to apply an elastic force to the driving member 3 to drive the driving member 3 to rotate relative to the base 1.

[0066] Specifically, the driving member 3 is mounted on the base 1, and the driving member 3 is manually rotated to move a certain angle, such as 120°. At the same time, the rotating driving member 3 drives the elastic member 5 to rotate, so that the elastic member 5 is in an energy storage state, and the latch head 22 extends into the driving limit groove 31 to keep the unlocking member 2 in the first state. When the unlocking member 2 receives a trigger signal, the unlocking member 2 changes to the second state, and the latch head 22 withdraws from the driving limit groove 31. The elastic member 5 applies an elastic force to the driving member 3, and the elastic force causes the driving member 3 to rotate around the axis. While the driving member 3 rotates around the axis, it pushes the pushing device 4 to move in the first direction away from the base 1. Thus, the elastic member 5 provides a circumferential driving force for the driving member 3, so that the driving member 3 rotates and drives the pushing device 4 to move in the first direction away from the base 1.

[0067] It should be noted that the manual rotation of the driving member 3 by 120° is only an example, and does not limit the driving member 3 to rotate only by 120°, but can also rotate by 45°, 60°, 90°, 150°, 180° or other degrees.

[0068] In some embodiments, see Figure 7As shown, the base 1 also includes a base limit groove 17. After the base limit groove 17 is aligned with the drive limit groove 31, the pin head 22 extends into the base limit groove 17 and the drive limit groove 31 to keep the unlocking member 2 in the first state. When the unlocking member 2 receives a trigger signal, the unlocking member 2 changes to the second state, and the unlocking member 2 withdraws from the base limit groove 17 and the drive limit groove 31.

[0069] In some embodiments of the present application, see Figure 1 , Figure 5 , Figure 6 As shown, the base 1 has a positioning cavity 11, the driving member 3 includes a positioning portion 32, the positioning portion 32 is arranged in the positioning cavity 11, one end of the elastic member 5 is connected to the base 1, and the other end of the elastic member 5 is connected to the positioning portion 32. Specifically, the positioning cavity 11 provides an accommodating space for the positioning portion 32, the total size of the headrest 10 in the first direction is reduced, the space occupied by the headrest 10 in the first direction is reduced, and the internal structure of the headrest 10 is more compact.

[0070] In some embodiments of the present application, see Figure 1 , Figure 5 , Figure 6 As shown, the driving member 3 further includes a driving portion 33, which is connected to the positioning portion 32. When the positioning portion 32 rotates relative to the base 1, the driving portion 33 rotates with the positioning portion 32 to push the pushing device 4 to move in the first direction. Specifically, the driving portion 33 can extend out of the positioning cavity 11, and when the positioning portion 32 rotates relative to the base 1, the driving portion 33 rotates with the positioning portion 32 to push the pushing device 4 to move in the first direction, thereby achieving the extension of the headrest 10 in the first direction. At this time, the total size of the headrest 10 in the first direction is increased.

[0071] In some embodiments, the base 1 further includes a driving cavity 16 , the driving cavity 16 is communicated with the positioning cavity 11 , and the driving portion 33 is disposed in the driving cavity 16 .

[0072] In some embodiments of the present application, see Figure 5 , Figure 6 As shown, one end of the positioning cavity 11 is open, and a limiting baffle 111 is provided at the opening of the positioning cavity 11. In a plane perpendicular to the first direction, the projection of the limiting baffle 111 in the plane is at least partially located within the projection range of the positioning portion 32 in the plane, so as to limit the positioning portion 32 in the positioning cavity 11. Specifically, the setting of the limiting baffle 111 provides precise limiting for the positioning portion 32, ensuring that the driving member 3 will not move in the first direction during the rotational movement, and limiting the driving member 3 to work at a set position. When the driving member 3 has a tendency to move along the first direction, the limiting baffle 111 stops the positioning portion 32 to prevent the positioning portion 32 from escaping from the positioning cavity 11.

[0073] Optionally, the number of the limiting baffles 111 may be one, two, three or more, for example Figure 6 As shown, there are two limit baffles 111.

[0074] In some embodiments, the limiting baffle 111 abuts against the positioning portion 32 , and the positioning portion 32 does not move axially in the positioning cavity 11 , which is beneficial to reducing abnormal noise.

[0075] In some embodiments, the limiting baffle 111 is spaced apart from the positioning portion 32 in the first direction. When the driving member 3 moves in the F1 - F2 direction, the positioning portion 32 can fit with the limiting baffle 111 .

[0076] In some embodiments of the present application, see Figure 4 , Figure 5 , Figure 7 As shown, the elastic member 5 is a torsion spring, which includes a torsion spring body 51, a first arm 52 and a second arm 53. The first arm 52 is connected to the torsion spring body 51 and extends into the first torsion spring hole 12 on the base 1. The second arm 53 is connected to the torsion spring body 51 and extends into the second torsion spring hole 321 on the positioning portion 32. Specifically, the torsion spring body 51, the first arm 52 and the second arm 53 work together to enable the elastic member 5 to provide the driving portion 33 with an elastic force that drives the driving portion 33 to rotate circumferentially.

[0077] In some embodiments of the present application, see Figure 1-Figure 3 As shown, the pushing device 4 includes a transmission member 41 and a pushing member 42. When the driving member 3 rotates relative to the base 1, it can push the transmission member 41 to rotate in the same direction and push the transmission member 41 to move in the first direction. When the transmission member 41 moves, it can drive the pushing member 42 to move along the first direction. Specifically, the rotational motion of the driving member 3 is effectively converted into the linear motion of the pushing member 42, thereby achieving the change of the position of the pushing member 42, so that the pushing member 42 is close to the occupant to support the occupant's neck and protect the occupant's neck safety.

[0078] In some embodiments of the present application, see Figure 5 , Fig. 9 , Fig.13As shown, the driving part 33 includes a driving paddle 331, and the transmission member 41 includes a transmission arm 411. When the driving member 3 rotates relative to the base 1, the driving paddle 331 drives the transmission member 41 to rotate in the same direction by pushing the transmission arm 411. Specifically, after the unlocking member 2 receives the trigger signal, the latch head 22 withdraws from the driving limit groove 31, releases the limit on the driving member 3, and thus contacts the limit on the elastic member 5 in the energy storage state, and the elastic member 5 applies an elastic force to the driving member 3, and the elastic force causes the driving member 3 to rotate relative to the base 1, and the driving paddle 331 paddles the transmission arm 411 on the transmission member 41, so that the transmission member 41 rotates in the same direction as the driving member 3. Therefore, the driving paddle 331 directly acts on the transmission arm 411, reducing the intermediate transmission links, thereby improving the transmission efficiency, saving space, and making the headrest 10 structure more compact.

[0079] Optionally, the driving paddles 331 may be one, two, three or more, for example Figure 5 As shown, there are three driving paddles 331 .

[0080] In some embodiments, there are multiple driving paddles 331, and the multiple driving paddles 331 are evenly distributed along the circumference of the driving member 3. Therefore, when the driving paddles 331 push the transmission arm 411 to rotate, the transmission member 41 rotates more smoothly and is less likely to get stuck.

[0081] In some embodiments of the present application, see Figure 3 , Figure 5 , Fig. 9 As shown, the transmission member 41 includes a first outer tube portion 412 and a second outer tube portion 413, the second outer tube portion 413 is located radially outside the first outer tube portion 412, the second outer tube portion 413 and the first outer tube portion 412 are connected by a transmission arm 411, and the driving paddle 331 extends between the second outer tube portion 413 and the first outer tube portion 412. Specifically, the second outer tube portion 413 and the first outer tube portion 412 are connected by the transmission arm 411, forming a more stable structure, which not only improves the overall rigidity of the transmission member 41, but also helps to resist external impact and vibration during the transmission process, thereby extending the service life of the headrest 10. The driving paddle 331 extends between the second outer tube portion 413 and the first outer tube portion 412, so that the driving paddle 331 can move the transmission arm 411 on the transmission member 41, so that the transmission member 41 rotates in the same direction as the driving member 3.

[0082] In some embodiments of the present application, see Figure 3 , Figure 5 , Fig. 9As shown, the driving part 33 includes an inner cylinder part 332, the inner cylinder part 332 and the driving paddle 331 are both connected to the positioning part 32, the driving paddle 331 is located on the radially outer side of the inner cylinder part 332, there is a gap between the driving paddle 331 and the inner cylinder part 332, and the first outer cylinder part 412 is located in the gap. Specifically, the gap between the driving paddle 331 and the inner cylinder part 332, and the gap between the first outer cylinder part 412 and the second outer cylinder part 413 not only reduce the weight of the structure, but also reduce the space occupied by the headrest 10 in the first direction, which helps to more reasonably arrange other components in the limited space inside the vehicle, reduce the number and complexity of parts, reduce the processing difficulty and assembly difficulty of the production process, and save costs.

[0083] In some embodiments of the present application, see Figure 1 , Figure 6 , Figure 8 , Fig. 9 As shown, the transmission member 41 includes a transmission guide bar 414, which is spirally arranged around the first direction, and the base 1 has a base protrusion 13 and a base hook 14. The transmission guide bar 414 is sandwiched between the base protrusion 13 and the base hook 14. The base protrusion 13 stops at the surface of the transmission guide bar 414 facing the base 1, and the base hook 14 is located on the side of the transmission guide bar 414 away from the base 1. In other words, the base protrusion 13 stops at the surface of the transmission guide bar 414 facing the F2 direction, and the base hook 14 is located on the side of the transmission guide bar 414 facing the F1 direction. Specifically, the transmission guide bar 414 is clamped by the base protrusion 13 and the base hook 14, and the transmission guide bar 414 is not easy to be displaced or loosened, so that the transmission member 41 will not jump up and down, which enhances the stability of the transmission member 41, thereby ensuring the accuracy and reliability of the transmission process. The transmission guide bar 414 is spirally arranged around the first direction. This design makes the transmission path more reasonable and smooth. During the transmission process, power can be smoothly transmitted along the spiral path, reducing energy loss and friction loss, thereby improving the transmission efficiency of the headrest 10.

[0084] In some embodiments, one side of the base protrusion 13 facing the transmission guide bar 414 is an inclined surface, and the inclined surface of the base protrusion 13 facing the transmission guide bar 414 is in contact with the transmission guide bar 414. Thus, the transmission guide bar 414 and the inclined surface of the base protrusion 13 cooperate with each other, and when the driving member 3 rotates, the inclined surface of the base protrusion 13 forces the transmission member 41 to move spirally in the F1 direction.

[0085] Optionally, the number of the transmission guide strips 414 is consistent with the number of the base protrusions 13 and the base hooks 14, and can be one, two, three or more. Figure 6 , Figure 8 As shown, there are three transmission guide bars 414, three base protrusions 13 and three base hooks 14.

[0086] In some embodiments of the present application, see Figure 1 , Figure 6 , Figure 8 As shown, the side of the transmission guide bar 414 facing away from the base 1 forms a transmission guide groove 415 that is recessed in the direction of the base 1, and the base hook 14 at least partially extends into the transmission guide groove 415. In other words, the side of the transmission guide bar 414 in the F1 direction forms a transmission guide groove 415 that is recessed in the F2 direction. Specifically, by extending the base hook 14 into the transmission guide groove 415, a close fitting relationship is formed with the transmission guide bar 414, and the base hook 14 is not easy to fall out of the transmission guide groove 415, thereby enhancing the overall structural stability of the headrest 10 and reducing the risk of transmission failure caused by looseness or displacement. The precise shape and position of the transmission guide groove 415 provide a stable and precise guide for the transmission member 41, reduce transmission errors, and improve the transmission accuracy and reliability of the headrest 10.

[0087] In some embodiments of the present application, see Figure 1 , Figure 6 , Figure 8 As shown, a transmission stop rib 416 is provided at one end of the transmission guide bar 414 close to the base 1, and the transmission member 41 stops rotating when the transmission stop rib 416 contacts the base hook 14. Therefore, the transmission stop rib 416 cooperates with the base hook 14 to play a limiting role, so that after the transmission member 41 rotates a certain angle (for example, 90°, 100°, 120° or other angles), the transmission member 41 no longer moves in the F1 direction under the limiting effect of the transmission stop rib 416 and the base hook 14, thereby preventing the transmission member 41 from excessively rotating or deviating during the rotation process, effectively preventing the transmission member 41 from causing damage or failure to the headrest 10 due to excessive rotation, and improving the stability and reliability of the system.

[0088] Optionally, the number of the transmission stop ribs 416 and the transmission guide bars 414 is the same, and can be one, two, or more. Figure 8 As shown, there are three transmission stop ribs 416 .

[0089] In some embodiments of the present application, see Figure 8 , Fig.10 As shown, the pushing member 42 includes a pushing guide bar 421, which is spirally arranged around the first direction. The transmission member 41 has a transmission protrusion 417 and a transmission hook 418. The pushing guide bar 421 is clamped between the transmission protrusion 417 and the transmission hook 418. The transmission protrusion 417 stops at the surface of the pushing guide bar 421 facing the transmission member 41, and the transmission hook 418 is located on the side of the pushing guide bar 421 away from the transmission member 41.

[0090] Specifically, the push guide strip 421 is clamped by the transmission protrusion 417 and the transmission hook 418, and the push guide strip 421 is not easy to be displaced or loosened, so that the transmission member 41 will not jump up and down, and the stability of the push member 42 is enhanced, thereby ensuring the accuracy and reliability of the transmission process. The push guide strip 421 is arranged in a spiral around the first direction. This design makes the transmission path more reasonable and smooth. During the transmission process, power can be smoothly transmitted along the spiral path, reducing energy loss and friction loss, thereby improving the transmission efficiency of the headrest 10.

[0091] Optionally, the number of the push guide strips 421 is consistent with the number of the transmission protrusions 417 and the transmission hooks 418, and can be one, two, three or more. Figure 6 , Figure 8 As shown, there are three push guide strips 421, three transmission protrusions 417 and three transmission hooks 418.

[0092] In some embodiments, the side of the transmission protrusion 417 facing the pushing guide bar 421 is an inclined surface, and the inclined surface of the transmission protrusion 417 facing the pushing guide bar 421 is in contact with the pushing guide bar 421. Therefore, the inclined surface of the pushing guide bar 421 and the transmission protrusion 417 cooperate with each other, and when the transmission member 41 moves spirally in the F1 direction, the inclined surface of the transmission protrusion 417 forces the pushing member 42 to move in the F1 direction.

[0093] In some embodiments of the present application, see Figure 1 , Figure 8 , Fig.10 , Fig.11 As shown, the side of the push guide strip 421 away from the transmission member 41 forms a push guide groove 4211 that is recessed in the direction of the transmission member 41, and the transmission hook 418 at least partially extends into the push guide groove 4211. In other words, the side of the push guide strip 421 in the F1 direction forms a push guide groove 4211 that is recessed in the F2 direction. Specifically, the transmission hook 418 extends into the push guide groove 4211 to form a close fit with the push guide strip 421, and the transmission hook 418 is not easy to fall out of the push guide groove 4211, thereby enhancing the overall structural stability of the headrest 10 and reducing the risk of transmission failure caused by looseness or displacement. The precise shape and position of the push guide groove 4211 provide a stable and precise guide for the push member 42, reduce transmission errors, and improve the transmission accuracy and reliability of the headrest 10.

[0094] In some embodiments of the present application, see Figure 1 , Figure 8 , Fig.10 , Fig.11As shown, a push stop rib 4212 is provided on the push guide strip 421, and the push member 42 stops moving when the transmission member 41 rotates until the transmission hook 418 contacts the push stop rib 4212. Thus, the push stop rib 4212 enables the push member 42 to stop accurately at a predetermined position during the movement process, thereby preventing the transmission member 41 from excessively rotating or deviating during the rotation process, effectively preventing the push member 42 from excessively moving and causing damage or failure to the headrest 10, and improving the stability and reliability of the system.

[0095] Optionally, the number of the push stop ribs 4212 and the transmission guide strips 414 is the same, which can be one, two or more. Figure 8 As shown, there are three push stop ribs 4212.

[0096] In some embodiments of the present application, see Figure 1 , Figure 6 , Fig.10 As shown, the push member 42 includes a push plate 422 and a push cylinder 423, the push cylinder 423 is connected to the side of the push plate 422 facing the transmission member 41, and the push guide strip 421 is arranged on the outer circumference of the push cylinder 423. In other words, the push cylinder 423 is connected to the side of the push plate 422 facing F2. Specifically, by arranging the push guide strip 421 on the outer circumference of the push cylinder 423, the surface space of the push cylinder 423 is reasonably utilized, so that the transmission member 41 rotates to drive the push member 42 to move in the F1 direction.

[0097] In some embodiments of the present application, see Figure 1 , Figure 6 , Fig.10 As shown, a guide block 4221 is provided on the push plate 422, and the base 1 has a guide groove 15. The guide block 4221 and the guide groove 15 both extend in the first direction, and the guide block 4221 cooperates with the guide groove 15. Specifically, the guide block 4221 cooperates with the guide groove 15 to ensure that the push member 42 moves along the predetermined first direction during the movement, thereby reducing the possibility of deviation and shaking, and avoiding the shaking of the headrest 10 due to the matching clearance when the headrest 10 is working.

[0098] In some embodiments of the present application, see Figure 1-Figure 3 As shown, the headrest 10 further includes a locking member 6, which is mounted on the base 1 and is used to prevent the transmission member 41 from moving in the opposite direction to the first direction. Thus, through the locking member 6, the transmission member 41 will not move in the opposite direction to the first direction after the spiral movement in the first direction, thereby enhancing safety and making the use of the headrest 10 more stable and comfortable.

[0099] In some embodiments of the present application, see Figure 1 , Fig. 9 As shown, the locking member 6 has a locking tooth 61, and the transmission member 41 has a transmission tooth 419. When the driving member 3 drives the transmission member 41 to rotate forward, the locking tooth 61 meshes with the transmission tooth 419 for transmission. When the transmission member 41 has a tendency to rotate in the reverse direction, the locking tooth 61 locks the transmission tooth 419. Therefore, when the transmission member 41 has a tendency to rotate in the reverse direction, the locking tooth 61 can quickly lock the transmission tooth 419 to prevent the transmission member 41 from moving in the reverse direction, thereby preventing accidents from occurring, ensuring that the transmission member 41 can only move spirally in the first direction, and avoiding safety hazards caused by the reverse rotation of the transmission member 41.

[0100] In some embodiments of the present application, see Fig. 9 As shown, the transmission member 41 includes a transmission guide bar 414, which is spirally arranged around the first direction, and the transmission guide bar 414 is provided with the transmission teeth 419 on one side facing the base 1. Specifically, when the driving member 3 drives the transmission member 41 to rotate forward, the locking teeth 61 mesh with the transmission teeth 419 for transmission, and when the transmission member 41 has a tendency to rotate in the reverse direction, the locking teeth 61 lock the transmission teeth 419.

[0101] In some embodiments, the headrest 10 further includes a locking elastic member 75, which is installed between the locking member 6 and the base 1, and is used to provide an elastic force toward the first direction for the locking member 6. Specifically, when the transmission member 41 rotates forward, the transmission tooth 419 rotates forward along with the transmission member 41. Since the transmission tooth 419 and the locking tooth 61 are meshed with each other, the forward rotation of the transmission tooth 419 will generate a driving force toward the F2 direction on the locking tooth 61, so that the locking member 6 starts to make repeated linear motion under the action of the locking elastic member 75. When the transmission member 41 has a tendency to rotate in the reverse direction, the locking tooth 61 locks the transmission tooth 419, so that the transmission member 41 cannot rotate in the reverse direction.

[0102] The principle of positive meshing and reverse locking of the locking tooth 61 on the transmission tooth 419 relies on the asymmetric teeth of the locking tooth 61 and the transmission tooth 419, which is a common technical means in the field and will not be described in detail here.

[0103] Optionally, the locking elastic member 75 may be a spring, elastic rubber or other elastic members.

[0104] In some embodiments of the present application, see Fig.12As shown, the unlocking member 2 switches from the first state to the second state when receiving the trigger signal. Therefore, in an emergency, such as a rear-end collision of the vehicle 100, when the corresponding trigger signal is generated, the unlocking member 2 can quickly switch from the first state to the second state, so that the active protection mechanism of the headrest 10 is activated in time, and the driving member 3 rotates to push the pushing device 4 to move in the first direction, quickly adjusting the position of the headrest 10, providing effective protection for the occupant's neck and reducing the probability of neck injury.

[0105] In some embodiments of the present application, see Fig.14 , Fig.15 As shown, the headrest 10 further includes a pusher cover 8 and a base cover 9. The pusher cover 8 opens toward one side of the base 1, and the base cover 9 opens toward one side of the pusher 42. The pusher cover 8 is sleeved on the outside of the pusher 42, and the pusher 42 carries the pusher cover 8. The base cover 9 is sleeved on the outside of the base 1, and the base 1 carries the base cover 9. When the unlocking member 2 is in the first state, the pusher cover 8 and the base cover 9 abut against each other to prevent dust, stains and other foreign matter from entering the interior of the headrest 10, thereby providing physical protection for the structure and components inside the headrest 10. When the unlocking member 2 is in the second state, there is a gap between the pusher cover 8 and the base cover 9, and the pusher 42 pushes the pusher cover 8 to move in the first direction, so that the pusher cover 8 supports the neck of the occupant and protects the neck safety of the occupant.

[0106] See also Fig.16 As shown, a seat 20 according to another embodiment of the present application includes the headrest 10 mentioned above.

[0107] According to the seat 20 of another embodiment of the present application, the headrest 10 is effectively reduced in space occupied by the headrest 10 in the first direction by setting the unlocking member 2 in the first state, which helps to more reasonably arrange other components in the limited space inside the vehicle, reduces the number and complexity of parts, reduces the difficulty of processing and assembly in the production process, and saves costs. By setting the unlocking member 2 in the second state, the pushing device 4 can move in the first direction away from the base 1, so that the pushing device 4 is close to the occupant to support the occupant's head and neck.

[0108] See also Fig.17 As shown, a vehicle 100 according to yet another embodiment of the present application includes the above-mentioned seat 20 .

[0109] According to the vehicle 100 of another embodiment of the present application, the headrest 10 in the seat 20 thereof is effectively reduced in space occupied by the headrest 10 in the first direction by setting the unlocking member 2 in the first state, which helps to more reasonably arrange other components in the limited space inside the vehicle, reduces the number and complexity of parts, reduces the difficulty of processing and assembly in the production process, and saves costs. By setting the unlocking member 2 in the second state, the pushing device 4 can move in the first direction away from the base 1, so that the pushing device 4 is close to the occupant to support the occupant's head and neck.

[0110] In some embodiments of the present application, see Fig.12 As shown, the unlocking member 2 switches from the first state to the second state upon receiving the rear-end collision signal of the vehicle 100. Therefore, when the vehicle 100 rear-ends, the unlocking member 2 can quickly switch from the first state to the second state upon receiving the rear-end collision signal of the vehicle 100, so that the active protection mechanism of the headrest 10 is activated in time, and the driving member 3 rotates under the driving force of the elastic member 5 to push the pushing device 4 to move in the first direction, and the position of the headrest 10 is quickly adjusted to provide effective protection for the occupant's neck and reduce the probability of neck injury.

[0111] It should be noted that the above-mentioned vehicle 100 rear-end collision signal is a kind of trigger signal, which is specially used to control the unlocking member 2 to switch from the first state to the second state after the vehicle 100 rear-end collision.

[0112] In addition to being used in the vehicle 100, the headrest 10 can also be used in other equipment that requires a seat, such as a toy cabin with a seat, a submarine, etc. In this case, the trigger signal can be a side collision signal, a top collision signal, a rear-end collision signal, etc.

[0113] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0114] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0115] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0116] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A headrest (10), characterized in that: include: Base (1); An unlocking member (2), the unlocking member (2) being mounted on the base (1); A driving member (3), wherein the driving member (3) is mounted on the base (1); The unlocking member (2) has a first state and a second state. In the first state, the unlocking member (2) locks the driving member (3) on the base (1). In the second state, the unlocking member (2) is separated from the driving member (3), and the driving member (3) rotates relative to the base (1). The headrest (10) further comprises a pushing device (4), and when the driving member (3) rotates relative to the base (1), the pushing device (4) can be pushed to move in a first direction away from the base (1).

2. The headrest (10) according to claim 1, characterized in that: The unlocking member (2) comprises a shell (21) and a latch head (22); the shell (21) is mounted on the base (1); the latch head (22) is movable relative to the shell (21); a driving limit groove (31) is provided on the driving member (3); in the first state, the latch head (22) extends into the driving limit groove (31); in the second state, the latch head (22) withdraws from the driving limit groove (31).

3. The headrest (10) according to claim 1, characterized in that: The headrest (10) further comprises an elastic member (5), one end of the elastic member (5) being connected to the base (1), and the other end of the elastic member (5) being connected to the driving member (3), and the elastic member (5) being used to apply an elastic force to the driving member (3) so as to drive the driving member (3) to rotate relative to the base (1).

4. The headrest (10) according to claim 3, characterized in that: The base (1) has a positioning cavity (11), the driving member (3) comprises a positioning portion (32), the positioning portion (32) is arranged in the positioning cavity (11), and the other end of the elastic member (5) is connected to the positioning portion (32).

5. The headrest (10) according to claim 4, characterized in that: The driving member (3) further comprises a driving portion (33), wherein the driving portion (33) is connected to the positioning portion (32), and when the positioning portion (32) rotates relative to the base (1), the driving portion (33) rotates along with the positioning portion (32) to push the pushing device (4) to move in the first direction.

6. The headrest (10) according to claim 4, characterized in that: One end of the positioning cavity (11) is open, and a limiting baffle (111) is provided at the open portion of the positioning cavity (11); in a plane perpendicular to the first direction, a projection of the limiting baffle (111) in the plane is at least partially located within a projection range of the positioning portion (32) in the plane, so as to limit the positioning portion (32) in the positioning cavity (11).

7. The headrest (10) according to claim 4, characterized in that: The elastic member (5) is a torsion spring, comprising a torsion spring body (51), a first arm (52) and a second arm (53), wherein the first arm (52) is connected to the torsion spring body (51), and the first arm (52) extends into a first torsion spring hole (12) on the base (1), and the second arm (53) is connected to the torsion spring body (51), and the second arm (53) extends into a second torsion spring hole (321) on the positioning portion (32).

8. The headrest (10) according to claim 5, characterized in that: The pushing device (4) comprises: a transmission member (41), wherein when the driving member (3) rotates relative to the base (1), it can push the transmission member (41) to rotate in the same direction and push the transmission member (41) to move in the first direction; and A pushing member (42), wherein the transmission member (41) is capable of driving the pushing member (42) to move along the first direction when the transmission member (41) moves.

9. The headrest (10) according to claim 8, characterized in that: The driving portion (33) comprises a driving paddle (331), and the transmission member (41) comprises a transmission arm (411). When the driving member (3) rotates relative to the base (1), the driving paddle (331) drives the transmission member (41) to rotate in the same direction by pushing the transmission arm (411).

10. The headrest (10) according to claim 9, characterized in that The transmission member (41) comprises a first outer cylinder portion (412) and a second outer cylinder portion (413), wherein the second outer cylinder portion (413) is located radially outside the first outer cylinder portion (412), the second outer cylinder portion (413) and the first outer cylinder portion (412) are connected via the transmission arm (411), and the driving paddle (331) extends between the second outer cylinder portion (413) and the first outer cylinder portion (412).

11. The headrest (10) according to claim 10, characterized in that: The driving portion (33) comprises an inner cylinder portion (332), the inner cylinder portion (332) and the driving paddle (331) are both connected to the positioning portion (32), the driving paddle (331) is located radially outside the inner cylinder portion (332), a gap is provided between the driving paddle (331) and the inner cylinder portion (332), and the first outer cylinder portion (412) is located in the gap.

12. The headrest (10) according to claim 8, characterized in that The transmission member (41) comprises a transmission guide bar (414), the transmission guide bar (414) being spirally arranged around the first direction, the base (1) comprising a base protrusion (13) and a base hook (14), the transmission guide bar (414) being sandwiched between the base protrusion (13) and the base hook (14), the base protrusion (13) being abutted against a surface of the transmission guide bar (414) facing the base (1), and the base hook (14) being located on a side of the transmission guide bar (414) facing away from the base (1).

13. The headrest (10) according to claim 12, characterized in that A transmission guide groove (415) recessed in the direction of the base (1) is formed on the side of the transmission guide strip (414) facing away from the base (1), and the base hook (14) at least partially extends into the transmission guide groove (415).

14. The headrest (10) according to claim 12, characterized in that A transmission stop rib (416) is provided at one end of the transmission guide bar (414) close to the base (1), and when the transmission member (41) rotates until the transmission stop rib (416) contacts the base hook (14), the transmission member (41) stops rotating.

15. The headrest (10) according to claim 8, characterized in that The pushing member (42) comprises a pushing guide bar (421), the pushing guide bar (421) is spirally arranged around the first direction, the transmission member (41) has a transmission protrusion (417) and a transmission hook (418), the pushing guide bar (421) is clamped between the transmission protrusion (417) and the transmission hook (418), the transmission protrusion (417) stops at the surface of the pushing guide bar (421) facing the transmission member (41), and the transmission hook (418) is located on the side of the pushing guide bar (421) facing away from the transmission member (41).

16. The headrest (10) according to claim 15, characterized in that A push guide groove (4211) that is recessed in the direction of the transmission member (41) is formed on the side of the push guide strip (421) that faces away from the transmission member (41), and the transmission hook (418) at least partially extends into the push guide groove (4211).

17. The headrest (10) according to claim 15, characterized in that A push stop rib (4212) is provided on the push guide strip (421), and when the transmission member (41) rotates until the transmission hook (418) contacts the push stop rib (4212), the push member (42) stops moving.

18. The headrest (10) according to claim 15, characterized in that The pushing member (42) comprises a pushing plate (422) and a pushing cylinder (423), wherein the pushing cylinder (423) is connected to a side of the pushing plate (422) facing the transmission member (41), and the pushing guide strip (421) is arranged on the outer peripheral surface of the pushing cylinder (423).

19. The headrest (10) according to claim 18, characterized in that The push plate (422) is provided with a guide block (4221), the base (1) has a guide groove (15), the guide block (4221) and the guide groove (15) both extend along the first direction, and the guide block (4221) is in guiding cooperation with the guide groove (15).

20. The headrest (10) according to claim 8, characterized in that The headrest (10) further comprises a locking member (6), wherein the locking member (6) is mounted on the base (1), and the locking member (6) is used to prevent the transmission member (41) from moving in a direction opposite to the first direction.

21. The headrest (10) according to claim 20, characterized in that The locking member (6) has a locking tooth (61), and the transmission member (41) has a transmission tooth (419). When the driving member (3) drives the transmission member (41) to rotate in the forward direction, the locking tooth (61) meshes with the transmission tooth (419) for transmission. When the transmission member (41) has a tendency to rotate in the reverse direction, the locking tooth (61) locks the transmission tooth (419).

22. The headrest (10) according to claim 21, characterized in that The transmission member (41) comprises a transmission guide bar (414), the transmission guide bar (414) is spirally arranged around the first direction, and the transmission tooth (419) is provided on a side of the transmission guide bar (414) facing the base (1).

23. The headrest (10) according to any one of claims 1 to 22, characterized in that: The unlocking member (2) switches from the first state to the second state when receiving a trigger signal.

24. A seat (20), characterized in that: A headrest (10) comprising any one of claims 1-23.

25. A vehicle (100), characterized in that: Comprising the seat (20) as claimed in claim 24.

26. The vehicle (100) according to claim 25, characterized in that The unlocking member (2) switches from the first state to the second state when receiving a rear-end collision signal of a vehicle (100).

Images