Seat headrest unlocking device, vehicle seat and vehicle

Abstract

The invention discloses a seat headrest unlocking device, a vehicle seat and a vehicle, the seat comprises an armrest and a headrest mounted on the armrest, the headrest can rotate relative to the armrest, the unlocking device comprises a first inhaul cable, one end of the first inhaul cable is connected with the headrest, the other end of the first inhaul cable is connected with the armrest, the armrest is provided with a first position and a second position, and the first position and the second position are opposite to each other. When the armrest rotates from the first position to the second position, the first inhaul cable can be driven to be pulled, so that the headrest is unlocked relative to the armrest. The first inhaul cable is arranged on the unlocking device, so that the headrest is unlocked relative to the armrest, and the problems that in the prior art, an armrest unlocking buckle drives an armrest unlocking mechanism to unlock and a headrest unlocking mechanism to unlock at the same time, so that the operation force is large, and the user experience is poor are solved.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to a seat headrest unlocking device, a vehicle seat and a vehicle. Background Art

[0002] In existing technology, rear seat armrests typically incorporate integrated headrests. To fold down the armrest, the armrest must be unlocked from the seat body to fold it down, and the headrest must also be unlocked from the armrest to rotate it relative to the armrest. Existing armrest and headrest unlocking mechanisms utilize an armrest unlocking handle to simultaneously unlock both the armrest and headrest, resulting in a high operating force and a poor user experience. Summary of the Invention

[0003] The present invention aims to solve the problem in the prior art that the armrest unlocking handle simultaneously unlocks the armrest unlocking mechanism and the headrest unlocking mechanism, resulting in a large operating force and a poor user experience. To this end, the purpose of the present invention is to propose a seat headrest unlocking device to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention proposes, on one hand, a seat headrest unlocking device, wherein the seat includes an armrest and a headrest mounted on the armrest, the headrest can rotate relative to the armrest, and the unlocking device includes a first cable, one end of the first cable is connected to the headrest, and the other end of the first cable is connected to the armrest, the armrest has a first position and a second position, and when the armrest rotates from the first position to the second position, it can drive the first cable to be pulled to unlock the headrest relative to the armrest.

[0005] By arranging a first cable in the unlocking device, connecting one end of the first cable to the headrest and the other end to the armrest, the armrest is rotated to drive the first cable to be pulled, thereby unlocking the headrest relative to the armrest, replacing the problem of large operating force and poor user experience in the prior art where the armrest unlocking buckle is used to simultaneously unlock the armrest unlocking mechanism and the headrest unlocking mechanism.

[0006] In some embodiments, the armrest is provided with an armrest frame, the seat is provided with an armrest shaft, the armrest frame is rotatable relative to the armrest shaft, and the unlocking device further comprises:

[0007] a first fixing member, the first fixing member being fixedly connected to the armrest rotating shaft;

[0008] The first movable component has one end connected to the headrest through a first cable, and the other end connected to the armrest frame. When the armrest rotates, the first movable component moves under the action of the first fixing member, thereby driving the first cable to pull.

[0009] In some embodiments, the first movable component includes a first rotating shaft and a first movable part. The first rotating shaft is fixedly connected to the armrest frame. The first movable part is rotatably mounted on the first rotating shaft. One end of the first movable part is connected to the first cable, and the other end is abutted against the first fixed part. When the first movable part rotates relative to the first rotating shaft under the action of the first fixed part, the first cable is pulled.

[0010] In some embodiments, the first movable part has a first state and a second state, and the unlocking device also includes an elastic part, which is connected to the armrest frame. The elastic part abuts against the first movable part to provide an elastic force for the first movable part, so that when the armrest frame rotates from the second position to the first position, the first movable part rotates from the second state relative to the first rotation axis to the first state.

[0011] In some embodiments, the elastic member is configured as a coil spring, which is sleeved on the first rotating shaft, and one end of the coil spring abuts against the first movable member.

[0012] In some embodiments, a receiving groove is provided at one end of the first movable member, a cable head is connected to one end of the first cable, and the receiving groove is used to receive the cable head.

[0013] In some embodiments, a through hole is further provided at one end of the first movable member, and the through hole is arranged adjacent to the receiving groove, so that the cable head can be passed through the through hole and placed in the corresponding receiving groove.

[0014] In some embodiments, the through hole is connected to the accommodating groove via a communicating seam, and the communicating seam is used to accommodate the cable wire of the first cable.

[0015] In some embodiments, the cross-section of one end of the armrest shaft connected to the first fixing member along the axial direction of the armrest shaft is polygonal, and the first fixing member is provided with a through hole matching the cross-sectional shape of one end of the armrest shaft to form a circumferential limit so that the first fixing member does not rotate circumferentially after being mounted on the armrest shaft.

[0016] In some embodiments, a first axial limiting member is provided at one end of the armrest shaft connected to the first fixing member to limit the first fixing member from falling out of the armrest shaft.

[0017] Another embodiment of the present invention provides a vehicle seat, comprising the above-mentioned seat headrest unlocking device.

[0018] In some embodiments, the vehicle seat further includes an armrest unlocking assembly, the armrest unlocking assembly includes a second cable, one end of the second cable is suitable for connection with the armrest unlocking buckle, so that when the armrest unlocking buckle is pulled, the second cable is pulled to unlock the armrest.

[0019] The armrest is provided with an armrest frame, and the seat is provided with an armrest shaft. The armrest frame can rotate relative to the armrest shaft. The armrest unlocking assembly includes a second fixing member, which is fixedly connected to the armrest shaft; it also includes a second movable assembly, at least part of the second movable assembly is connected to the second fixing member to lock the armrest, one end of the second movable assembly is connected to the armrest unlocking button through a second cable, and the other end is connected to the armrest frame. When the armrest unlocking button is pulled, the armrest unlocking button drives the second cable to pull, thereby making the second movable assembly movable, and thereby making at least part of the second movable assembly disconnected from the second fixing member.

[0020] The second movable component includes a second rotating shaft and a second movable part. The second rotating shaft is fixedly connected to the armrest frame. The second movable part is rotatably mounted on the second rotating shaft. One end of the second movable part is connected to the second cable, and the other end is connected to the second fixed part. When the second movable part rotates relative to the second rotating shaft under the pulling of the second cable, the second movable part is disconnected from the second fixed part to unlock the armrest.

[0021] The second movable assembly also includes a third rotating shaft and a third movable part. The third rotating shaft is fixedly connected to the armrest frame. The third movable part is rotatably mounted on the third rotating shaft. One end of the third movable part is connected to the second cable, and the other end of the third movable part abuts the second movable part. When the third movable part rotates relative to the third rotating shaft under the pull of the second cable, the third movable part provides an abutting force for the second movable part to make the second movable part rotate around the second rotating shaft, thereby disconnecting the movable part from the second fixed part and unlocking the armrest.

[0022] One end of the armrest shaft where the second fixing piece is mounted is provided with a second axial limiting piece to limit the second fixing piece from falling out of the armrest shaft.

[0023] The second movable member and the fixed member are provided with meshing teeth that can mesh with each other. When the second movable member meshes with the fixed member, the armrest is locked; when the second movable member and the fixed member are disengaged under the pulling of the second cable, the armrest is unlocked.

[0024] An embodiment of the present invention further provides a vehicle, comprising the above-mentioned seat headrest unlocking device, or the above-mentioned vehicle seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a seat armrest and headrest provided by an embodiment of the present invention;

[0026] Figure 2 This is a diagram showing position changes of a seat armrest and a seat headrest provided by an embodiment of the present invention;

[0027] Figure 3This is a schematic structural diagram of a seat headrest unlocking device provided by an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the overall structure of another seat armrest and headrest provided by an embodiment of the present invention;

[0029] Figure 5 is a schematic diagram of an armrest unlocking assembly for a vehicle seat provided by an embodiment of the present invention;

[0030] Figure 6 It is a structural schematic diagram of another seat headrest unlocking device provided by an embodiment of the present invention.

[0031] Reference numerals:

[0032] 1-armrest; 11-armrest frame, 12-armrest shaft, 13-armrest unlocking assembly, 131-second cable, 132-second fixing member, 133-second movable assembly, 1331-second rotating axis, 1332-second movable member, 1333-third rotating axis, 1334-third movable member, 14-second axial limiting member;

[0033] 2 - headrest, 21 - first cable, 211 - cable head, 212 - cable line, 22 - first fixing member, 23 - first movable assembly, 231 - first rotating shaft, 232 - first movable member, 2321 - receiving groove, 2322 - through hole, 2323 - communicating slit, 24 - elastic member, 241 - coil spring, 25 - first axial limiting member;

[0034] 3-Armrest unlocking handle. DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail. 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 explain the present invention, but are not to be construed as limiting the present invention.

[0036] A seat headrest unlocking device provided by an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0037] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the seat includes an armrest 1 and a headrest 2 installed on the armrest 1, the headrest 2 can rotate relative to the armrest 1, and the seat headrest unlocking device includes a first cable 21, one end of the first cable 21 is connected to the headrest 2, and the other end of the first cable 21 is connected to the armrest 1, and the armrest 1 has a first position placed along the height direction of the vehicle and a second position placed along the length direction of the vehicle. When the armrest 1 rotates from the first position to the second position, it can drive the first cable 21 to pull, so as to unlock the headrest 2 relative to the armrest 1.

[0038] Specifically, if Figure 1 、 Figure 2 As shown, the armrest 1 is installed in the middle of the rear seat of a vehicle. When the armrest 1 is positioned along the height of the vehicle, it functions as a seat backrest, and is in the first position. When the armrest 1 rotates from the first position to the second position, it rotates from being positioned along the height of the vehicle to being positioned along the fore-aft direction of the vehicle, allowing it to function as an armrest. At this point, the headrest 2 must rotate relative to the armrest 1 so that the upper edge of the headrest 2 does not protrude beyond the upper edge of the armrest 1 when the armrest 1 is positioned along the fore-aft direction of the vehicle. One end of a first cable 21 is connected to the headrest 2, i.e., one end of a first zipper is connected to the locking device of the headrest 2, and the other end of the first cable 21 is connected to the armrest 1. When the armrest 1 rotates from the first position to the second position, the armrest 1 drives the first cable 21 to pull the locking device of the headrest 2, thereby unlocking the locking device of the headrest 2, ultimately unlocking the headrest 2 relative to the armrest 1.

[0039] According to some embodiments of the present invention, Figure 3 、 Figure 4 As shown, the armrest 1 is provided with an armrest frame 11, and the seat is provided with an armrest shaft 12. The armrest frame 11 can rotate relative to the armrest shaft 12. The unlocking device also includes a first fixing member 22, which is fixedly connected to the armrest shaft 12; it also includes a first movable component 23, one end of the first movable component 23 is connected to the headrest 2 through a first cable 21, and the other end is connected to the armrest frame 11. When the armrest 1 rotates, the first movable component 23 moves under the action of the first fixing member 22, thereby driving the first cable 21 to pull.

[0040] Specifically, the first movable component 23 is configured so that at least part of it can rotate relative to the armrest 1. When the armrest 1 rotates, it drives the first movable component 23 to move in the direction of rotation of the armrest 1. At this time, the first fixing member 22 provides a force to the first movable component 23, so that the first movable component 23 rotates at least partially while being driven by the armrest 1, thereby providing a pulling force to the first cable 21, so that the first cable 21 pulls the locking device of the headrest 2 to unlock.

[0041] According to some embodiments of the present invention, Figure 3 、 Figure 4As shown, the first movable component 23 includes a first rotating shaft 231 and a first movable part 232. The first rotating shaft 231 is fixedly connected to the armrest frame 11. The first movable part 232 is rotatably mounted on the first rotating shaft 231. One end of the first movable part 232 is connected to the first cable 21, and the other end is in contact with the first fixed part 22. When the first movable part 232 rotates relative to the first rotating shaft 231 under the action of the first fixed part 22, the first cable 21 is pulled.

[0042] Specifically, the position where the first movable part 232 is connected to the first rotating shaft 231 is set at the center of the first movable part 232. When the armrest 1 rotates, the armrest 1 drives the first rotating shaft 231 and the first movable part 232 to move. The edge of one end of the first fixed part 22 toward the first movable component 23 is set to an arc shape. When the first movable part 232 moves with the rotation of the armrest 1, the first fixed part 22 provides continuous supporting force to one end of the first movable part 232, so that one end of the first movable part 232 moves along the arc edge of the first fixed part 22, thereby realizing the rotation of the first movable part 232 relative to the first rotating shaft 231, driving the first cable 21 to pull and thereby unlocking the headrest 2.

[0043] In some other embodiments, the rotation axis can also be located at any position of the first movable part 232, as long as it can realize the function of driving the first movable part 232 to pull the first cable 21 when the armrest 1 rotates. The first fixed part 22 can also adjust the shape and size of the edge according to the rotation amplitude requirement of the first movable part 232.

[0044] According to some embodiments of the present invention, Figure 4 、 Figure 6 As shown, the first fixing member 22 is fixedly connected to one end of the armrest shaft 12. At the end of the armrest shaft 12 connected to the first fixing member 22, the armrest shaft 12 is configured as a non-cylindrical shape, that is, the cross-section of the armrest shaft 12 along the axial direction is configured as a polygon. At the same time, the first fixing member 22 is provided with a through hole 2322 that matches the cross-sectional shape of the armrest shaft 12. When the first fixing member 22 is sleeved on the armrest shaft 12, the polygonal configuration prevents the first fixing member 22 from rotating around the armrest shaft 12, thus forming a circumferential limit. The shape and size of the above-mentioned polygon are not limited and can also be set to an irregular shape as long as the circumferential limit function can be achieved. Alternatively, one end of the armrest shaft 12 can be fixedly connected to a connector having a multi-deformable cross-section along the circumferential direction of the armrest shaft 12, and the first fixing member 22 is sleeved on the connector to achieve circumferential limit so that the first fixing member 22 does not rotate around the armrest shaft 12.

[0045] According to some embodiments of the present invention, Figure 3 、 Figure 4As shown, a first axial limiting member 25 is provided at one end of the armrest shaft 12 connected to the first fixing member 22 to limit the first fixing member 22 from escaping from the armrest shaft 12 .

[0046] Specifically, the size of the first axial limit member 25 is larger than that of the first fixing member 22 and is sleeved on the opening of the armrest shaft 12. The first axial limit member 25 is fixedly connected to one end of the armrest shaft 12, and the first fixing member 22 is located between the first axial limit member 25 and the armrest frame 11.

[0047] In some other embodiments, the size, dimension and position of the first axial limiting member 25 may be adjusted as long as the axial limiting of the first fixing member 22 can be achieved.

[0048] According to some embodiments of the present invention, Figure 3 、 Figure 4 As shown, the first movable member 232 has a first state and a second state, and the unlocking device also includes an elastic member 24, which is connected to the armrest frame 11. The elastic member 24 abuts against the first movable member 232 to provide elastic force for the first movable member 232, so that when the armrest frame 11 rotates from the second position to the first position, the first movable member 232 rotates from the second state relative to the first rotating shaft 231 to the first state.

[0049] Specifically, when the armrest 1 is in the first position, the first movable member 232 is placed in the first state. When the armrest 1 rotates from the first position to the second position, the first movable member 232 is placed in the second state. When the first movable member 232 changes from the first state to the second state, the first cable 21 is pulled. At this time, the elastic member 24 accumulates force, supporting the first movable member 232 so that it can drive the first cable 21 when rotating relative to the first rotation axis 231. In addition, when the armrest 1 needs to rotate from the second position back to the first position, the first movable member 232 needs to change from the second state to the first state. At this time, the elastic member 24 applies elastic force to the first movable member 232 to change the first movable member 232 from the second state to the first state, so that the next time the armrest 1 rotates from the first position to the second position, the first movable member 232 can still rotate relative to the first rotation axis 231 under the support of the first fixed member 22, thereby pulling the first cable 21.

[0050] According to some embodiments of the present invention, Figure 4 、 Figure 6 As shown, the elastic member 24 is configured as a coil spring 241, which is sleeved on the first rotating shaft 231, and one end of the coil spring 241 is in contact with the first movable member 232. The coil spring 241 is fixedly connected to the first rotating shaft 231, and can provide elastic supporting force to the first movable member 232 during the process of changing from the first state to the second state, and when the first movable member 232 needs to change from the second state to the first state, one end of the coil spring 241 provides elastic force to the first movable member 232.

[0051] In some other embodiments, the elastic member 24 may also be configured as other forms other than the coil spring 241 , including but not limited to a torsion spring, a tension spring, a linear spring, etc., as long as the elastic member 24 can provide elastic force for the first movable member 232 .

[0052] According to some embodiments of the present invention, a receiving groove 2321 is provided at the end of the first movable member 232 connected to the first cable 21. A zipper head is provided at the end of the first cable 21 connected to the first movable member 232, and the cable head 211 can be placed in the receiving groove 2321. A through hole 2322 is also provided at one end of the first movable member 232. The through hole 2322 and the receiving groove 2321 are arranged adjacent to each other. The cable head 211 first passes through the through hole 2322 from the side facing away from the opening of the receiving groove 2321. After passing through the through hole 2322, the cable head 211 can be placed in the receiving groove 2321. A connecting slit 2323 is also provided at one end of the first connecting member, and the connecting slit 2323 connects the through hole 2322 and the accommodating groove 2321. The connecting slit 2323 extends from the through hole 2322 to the bottom of the accommodating groove 2321, so that after the cable head 211 of the first cable 21 is placed into the accommodating groove 2321, the cable line 212 of the first cable 21 can be placed into the connecting slit 2323 and moved to one end of the connecting slit 2323 in the accommodating groove 2321, so that when the first cable 21 is pulled, the cable head 211 will not fall out of the accommodating groove 2321.

[0053] Another embodiment of the present invention provides a vehicle seat, comprising the above-mentioned seat headrest unlocking device.

[0054] According to some embodiments of the present invention, Figure 5 As shown, the vehicle seat also includes an armrest unlocking assembly 13, which includes a second cable 131. One end of the second cable 131 is suitable for connecting with the armrest unlocking buckle 3, so that when the armrest unlocking buckle 3 is pulled, the second cable 131 is pulled to unlock the armrest 1.

[0055] Specifically, when the armrest 1 is unlocked and pulled, the second cable 131 is pulled to unlock the armrest 1. After the armrest 1 is unlocked, the armrest 1 can rotate around the armrest shaft 12. The armrest 1 rotates and drives the first cable 21 to pull, thereby unlocking the headrest 2 relative to the armrest 1.

[0056] According to some embodiments of the present invention, Figure 5As shown, the armrest unlocking assembly 13 includes a second fixed member 132 and a second movable assembly 133. The second fixed member 132 is fixedly connected to the armrest shaft 12. One end of the second movable assembly 133 is connected to the armrest unlocking buckle 3 through the second cable 131, and the other end is connected to the armrest frame 11. When the armrest unlocking buckle 3 is pulled, the armrest unlocking buckle 3 drives the second cable 131 to pull, thereby making the second movable assembly 133 movable, thereby making at least part of the second movable assembly 133 disconnected from the second fixed member 132.

[0057] Specifically, when at least a portion of the second movable assembly 133 is connected to the second fixing member 132, the armrest 1 is in a locked state. When the armrest unlocking handle 3 is actuated, the second cable 131 is pulled, causing the other end of the second cable 131 to pull at least a portion of the second movable assembly 133 to move, thereby disconnecting at least a portion of the second movable assembly 133 from the second fixing member 132. As a result, the armrest 1 changes from a locked state to an unlocked state, at which point the armrest 1 can rotate relative to the armrest shaft 12. There are various ways to connect at least a portion of the second movable assembly 133 to the second fixing member 132, as long as the armrest 1 can be locked.

[0058] According to some embodiments of the present invention, Figure 5 As shown, the second movable component 133 includes a second rotating shaft 1331 and a second movable part 1332. The second rotating shaft 1331 is fixedly connected to the armrest frame 11, and the second movable part 1332 is rotatably mounted on the second rotating shaft 1331. One end of the second movable part 1332 is connected to the second cable 131, and the other end is connected to the second fixed part 132. When the second movable part 1332 rotates relative to the second rotating shaft 1331 under the pull of the second cable 131, the second movable part 1332 is disconnected from the second fixed part 132 to unlock the armrest 1.

[0059] Specifically, the second movable member 1332 can be directly connected to the second cable 131, or other connecting members can be provided to connect the second movable member 1332 to the other connecting members, and the other connecting members are connected to the second cable 131. The second movable member 1332 and the second fixed member 132 are provided with meshing teeth that cooperate with each other. When the second movable member 1332 and the second fixed member 132 are engaged, the armrest 1 is locked. When the second movable member 1332 is pulled by the second cable 131 and bound relative to the second rotating shaft 1331, the second movable member 1332 and the second fixed member 132 are disengaged, and the armrest 1 is unlocked. The connection between the second movable member 1332 and the second fixed member 132 can be a meshing or snap connection, or any other connection method, as long as the armrest 1 can be locked.

[0060] According to some embodiments of the present invention, the second movable component 133 also includes a third rotating shaft 1333 and a third movable part 1334. The third rotating shaft 1333 is fixedly connected to the armrest frame 11, and the third movable part 1334 is rotatably mounted on the third rotating shaft 1333. One end of the third movable part 1334 is connected to the second cable 131, and the other end of the third movable part 1334 abuts against the second movable part 1332. When the third movable part 1334 rotates relative to the third rotating shaft 1333 under the pull of the second cable 131, the third movable part 1334 provides an abutting force to the second movable part 1332 to make the second movable part 1332 rotate around the second rotating shaft 1331, thereby disconnecting the movable part from the second fixed part 132 and unlocking the armrest 1.

[0061] Specifically, the third movable member 1334 is provided with a protrusion, and the second movable member 1332 is provided with a groove that cooperates with the protrusion. When the third movable member 1334 is pulled by the cable, it rotates relative to the armrest frame 11. During rotation, the protrusion applies a force to the sidewall of the groove, and the second movable member 1332 rotates under the influence of the third movable member 1334. The second movable member 1332 and the second fixed member 132 are provided with cooperating teeth. When the second movable member 1332 rotates under the influence of the third movable member 1334, the second movable member 1332 and the second fixed member 132 are disengaged, thereby unlocking the armrest 1.

[0062] In some other embodiments, other connecting members besides the second movable member 1332 and the third movable member 1334 may be provided, as long as they can unlock the armrest 1 .

[0063] According to some embodiments of the present invention, a second axial limiting member 14 is provided at one end of the armrest shaft 12 where the second fixing member 132 is mounted, so as to limit the second fixing member 132 from falling out of the armrest shaft 12 .

[0064] Specifically, the second fixing member 132 is disposed between the second axial limiting member 14 and the armrest frame 11 , and the second axial limiting member 14 is fixedly connected to the armrest frame 11 .

[0065] In some other embodiments, a second circumferential limiting member is further provided, and the second circumferential limiting member is used to limit the rotation of the second fixing member 132 relative to the armrest frame 11 .

[0066] Embodiments of the present invention further provide a vehicle including the aforementioned headrest unlocking device or vehicle seat. By providing a vehicle with a headrest unlocking device or a vehicle seat equipped with a headrest unlocking device, the prior art solves the problem of requiring armrest unlocking knob 3 to simultaneously unlock both the armrest 1 and headrest 2, resulting in high operating force and a poor user experience.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0069] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0070] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0071] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 invention. 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0072] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A seat headrest unlocking device, characterized in that: The seat comprises an armrest (1) and a headrest (2) mounted on the armrest (1); the headrest (2) can rotate relative to the armrest (1); the unlocking device comprises a first cable (21); one end of the first cable (21) is connected to the headrest (2); the other end of the first cable (21) is connected to the armrest (1); the armrest (1) has a first position and a second position; when the armrest (1) rotates from the first position to the second position, the first cable (21) can be driven to pull, so as to unlock the headrest (2) relative to the armrest (1).

2. The seat headrest unlocking device according to claim 1, characterized in that: The armrest (1) is provided with an armrest frame (11), the seat is provided with an armrest rotating shaft (12), the armrest frame (11) is rotatable relative to the armrest rotating shaft (12), and the unlocking device further comprises: a first fixing member (22), the first fixing member (22) being fixedly connected to the armrest rotating shaft (12); A first movable component (23), one end of the first movable group is connected to the headrest (2) through the first cable (21), and the other end is connected to the armrest frame (11). When the armrest (1) rotates, the first movable component (23) moves under the action of the first fixing member (22), thereby driving the first cable (21) to pull.

3. The seat headrest unlocking device according to claim 2, characterized in that: The first movable component (23) includes a first rotating shaft (231) and a first movable member (232), wherein the first rotating shaft (231) is fixedly connected to the armrest frame (11), and the first movable member (232) is rotatably sleeved on the first rotating shaft (231), one end of the first movable member (232) is connected to the first cable (21), and the other end is in contact with the first fixed member (22), and when the first movable member (232) rotates relative to the first rotating shaft (231) under the action of the first fixed member (22), the first cable (21) is pulled.

4. The seat headrest unlocking device according to claim 3, characterized in that: The first movable member (232) has a first state and a second state. The unlocking device further comprises an elastic member (24). The elastic member (24) is connected to the armrest frame (11). The elastic member (24) abuts against the first movable member (232) to provide elastic force for the first movable member (232), so that when the armrest frame (11) rotates from the second position to the first position, the first movable member (232) rotates from the second state relative to the first rotating shaft (231) to the first state.

5. The seat headrest unlocking device according to claim 4, characterized in that: The elastic member (24) is configured as a coil spring (241), the coil spring (241) is sleeved on the first rotating shaft (231), and one end of the coil spring (241) is in contact with the first movable member (232).

6. The seat headrest unlocking device according to claim 3, characterized in that: One end of the first movable member (232) is provided with a receiving groove (2321), one end of the first cable (21) is connected to a cable head (211), and the receiving groove (2321) is used to receive the cable head (211).

7. The seat headrest unlocking device according to claim 6, characterized in that: One end of the first movable member (232) is further provided with a through hole (2322), and the through hole (2322) is arranged adjacent to the accommodating groove (2321), so that the cable head (211) passes through the through hole (2322) and is placed in the accommodating groove (2321).

8. The seat headrest unlocking device according to claim 7, characterized in that: The through hole (2322) is connected to the accommodating groove (2321) via a connecting slit (2323), and the connecting slit (2323) is used to accommodate the cable line (212) of the first cable (21).

9. The seat headrest unlocking device according to claim 2, characterized in that: The cross-section of one end of the armrest shaft (12) connected to the first fixing member (22) along the axial direction of the armrest shaft (12) is polygonal, and the first fixing member (22) is provided with a through hole (2322) matching the cross-sectional shape of one end of the armrest shaft (12) to form a circumferential limit so that the first fixing member (22) does not rotate circumferentially after being sleeved on the armrest shaft (12).

10. The seat headrest unlocking device according to claim 9, characterized in that: One end of the armrest shaft (12) connected to the first fixing member (22) is provided with a first axial limiting member (25) to limit the first fixing member (22) from falling out of the armrest shaft (12).

11. A vehicle seat, characterized in that: It comprises the seat headrest unlocking device according to any one of claims 1 to 10.

12. The vehicle seat according to claim 11, characterized in that Also includes: An armrest unlocking assembly (13) includes a second pull cable (131), one end of which is adapted to be connected to an armrest unlocking buckle (3), so that when the armrest unlocking buckle (3) is pulled, the second pull cable (131) is pulled to unlock the armrest (1).

13. The vehicle seat according to claim 12, wherein: The armrest (1) is provided with an armrest frame (11), the seat is provided with an armrest rotating shaft (12), the armrest frame (11) is rotatable relative to the armrest rotating shaft (12), and the armrest unlocking assembly (13) further comprises: a second fixing member (132), the second fixing member (132) being fixedly connected to the armrest rotating shaft (12); A second movable component (133), at least a portion of the second movable component (133) is connected to the second fixing member (132) to lock the armrest (1); one end of the second movable component (133) is connected to the armrest unlocking buckle (3) through the second pull rope (131), and the other end is connected to the armrest frame (11); when the armrest unlocking buckle (3) is pulled, the armrest unlocking buckle (3) drives the second pull rope (131) to pull, thereby making the second movable component (133) movable, thereby making at least a portion of the second movable component (133) disconnected from the second fixing member (132).

14. The vehicle seat according to claim 13, characterized in that The second movable component (133) includes a second rotating shaft (1331) and a second movable member (1332), wherein the second rotating shaft (1331) is fixedly connected to the armrest frame (11), and the second movable member (1332) is rotatably mounted on the second rotating shaft (1331), one end of the second movable member (1332) is connected to the second cable (131), and the other end is connected to the second fixed member (132), and when the second movable member (1332) rotates relative to the second rotating shaft (1331) under the pull of the second cable (131), the second movable member (1332) is disconnected from the second fixed member (132) so that the armrest (1) is unlocked.

15. The vehicle seat according to claim 14, characterized in that The second movable component (133) also includes a third rotating shaft (1333) and a third movable member (1334), wherein the third rotating shaft (1333) is fixedly connected to the armrest frame (11), and the third movable member (1334) is rotatably mounted on the third rotating shaft (1333), one end of the third movable member (1334) is connected to the second cable (131), and the other end of the third movable member (1334) abuts against the second movable member (1332). When the third movable member (1334) rotates relative to the third rotating shaft (1333) under the pull of the second cable (131), the third movable member (1334) provides an abutting force for the second movable member (1332) to rotate the second movable member (1332) around the second rotating shaft (1331), thereby disconnecting the movable member from the second fixed member (132) and thereby unlocking the armrest (1).

16. The vehicle seat according to claim 13, wherein One end of the armrest shaft (12) on which the second fixing member (132) is mounted is provided with a second axial limiting member (14) to limit the second fixing member (132) from falling out of the armrest shaft (12).

17. The vehicle seat according to claim 14, wherein: The second movable member (1332) and the fixed member are provided with teeth that can engage with each other. When the second movable member (1332) engages with the fixed member, the armrest (1) is locked; when the second movable member (1332) and the fixed member are disengaged under the pulling of the second cable (131), the armrest (1) is unlocked.

18. A vehicle, characterized in that: It comprises the seat headrest unlocking device according to any one of claims 1-10, or the vehicle seat according to any one of claims 11-17.

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