Linkage device, seat and vehicle

Abstract

The utility model relates to a linkage device, a seat and a vehicle, the linkage device limits a first reset position of a reset support by using an unlocking support and a first limiting part for stopping, and meanwhile, a first elastic piece is connected to the first limiting part, so that the first limiting part can limit the position of the first elastic piece, and the position of the first elastic piece is limited by the first limiting part; in other words, the first limiting part can play a role of a reset blocking point and an elastic piece limiting point at the same time, so that the matching mode between the reset support and the unlocking support is simplified, the overall structure of the linkage device is simplified, and the space occupation ratio of the linkage device is reduced.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and more particularly to a linkage device, a seat, and a vehicle. Background Technology

[0002] Currently, all vehicles require rear seats to fold down. However, due to the limited space between the rear and front seats, the rear headrests can interfere with the front seats during folding. Therefore, folding headrests are used in the rear seats to automatically fold down during folding, avoiding interference. To achieve this automatic folding, a linkage mechanism is typically added to the backrest's rotation axis. This mechanism is connected to an unlocking end inside the headrest. When the backrest rotates, it activates the linkage, which in turn unlocks the headrest, allowing it to fold down. However, the current linkage mechanism is complex, resulting in a large overall space requirement. Utility Model Content

[0003] This application provides a linkage device, a seat, and a vehicle, simplifying the structure of the linkage device to at least partially solve the aforementioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a linkage device is provided, comprising:

[0005] Unlock the bracket;

[0006] A reset bracket is movably connected to the unlocking bracket; the reset bracket includes a first limiting part, and the unlocking bracket is used to stop against the first limiting part to limit a first reset position of the reset bracket;

[0007] A first elastic element connects the first limiting portion and the unlocking bracket. The first elastic element is used to provide a first force to the reset bracket so that the reset bracket moves to the first reset position.

[0008] Optionally, the reset bracket includes a first body, which is rotatably connected to the unlocking bracket, and the first limiting part is connected to the first body and protrudes from the first body.

[0009] Optionally, the first limiting portion extends relative to the first body toward the unlocking bracket and extends to the side of the unlocking bracket away from the first body, and the first elastic member is located on the side of the unlocking bracket away from the first body.

[0010] Optionally, the unlocking bracket includes a second body, which is rotatably connected to the first body about a rotation axis, and the first limiting portion is used to stop the second body on one side in a direction perpendicular to the rotation axis.

[0011] Optionally, the unlocking bracket includes a second limiting part, which is connected to the second body. The second limiting part extends away from the first body relative to the second body, and the first elastic member connects the second limiting part and the first limiting part.

[0012] Optionally, when the reset bracket is in the first reset position, the first limiting portion abuts against the unlocking bracket.

[0013] Optionally, the linkage device further includes:

[0014] A limiting bracket is used to stop the unlocking bracket to limit the second reset position of the locking bracket;

[0015] The second elastic element is connected to the limiting bracket and the unlocking bracket. The second elastic element is used to provide a second force to the unlocking bracket so that the unlocking bracket moves to the second reset position.

[0016] Optionally, the unlocking bracket includes a third limiting part, which is used to stop against the third limiting part to limit the second reset position of the unlocking bracket, and the third limiting part is used to connect with the cable.

[0017] Optionally, the unlocking bracket includes a fourth limiting part, which is connected to the third limiting part, and the second elastic member connects the fourth limiting part to the limiting bracket.

[0018] Optionally, the fourth limiting portion protrudes from the third limiting portion, and the second elastic member is located in the area enclosed by the third limiting portion and the fourth limiting portion.

[0019] Optionally, when the unlocking bracket is in the second reset position, the unlocking bracket abuts against the limiting bracket.

[0020] Optionally, the unlocking bracket is used to connect with the cable, and the linkage device further includes a drive component, which is movably connected to the reset bracket. The drive component is used to drive the reset bracket to rotate, and the reset bracket drives the unlocking bracket to rotate, thereby moving the cable.

[0021] Optionally, the linkage device includes an unlocked state and a reset state. When the linkage device switches from the reset state to the unlocked state, the drive component drives the reset bracket to rotate in a first direction, the reset bracket drives the unlock bracket to rotate in the first direction, and drives the cable to move.

[0022] When the drive assembly disengages from the reset bracket, the second elastic element provides the second force to the unlock bracket, causing the unlock bracket to rotate in the opposite direction of the first direction to the second reset position.

[0023] Optionally, when the linkage device switches from the unlocked state to the reset state, the drive component drives the reset bracket to rotate in the second direction;

[0024] When the drive assembly disengages from the reset bracket, the first elastic member provides the first force to the first limiting portion, causing the reset bracket to rotate in the opposite direction of the second direction to the first reset position; the second direction is opposite to the first direction.

[0025] According to a second aspect of this application, a seat is provided, including the linkage device described above.

[0026] According to a third aspect of this application, a vehicle is also provided, including the seat as described above.

[0027] In the linkage device of this application embodiment, the first reset position of the reset bracket is limited by the first limiting part and the unlocking bracket stop. At the same time, the first elastic member is connected to the first limiting part, so that the first limiting part can limit the position of the first elastic member. That is, the first limiting part can simultaneously play the role of reset stop point and elastic member limiting point, thereby helping to simplify the cooperation between the reset bracket and the unlocking bracket, thereby simplifying the overall structure of the linkage device and reducing the space ratio of the linkage device.

[0028] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0031] Figure 1 This is a schematic diagram of the structure of a linkage device provided in an embodiment of this application;

[0032] Figure 2 This is an exploded structural diagram of a linkage device provided in an embodiment of this application;

[0033] Figure 3 This is an exploded structural diagram of an unlocking bracket and a reset bracket provided in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the structure of a linkage device when folded according to an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the structure of a linkage device when it is deployed, as provided in an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Linkage device; 11. Unlocking bracket; 111. Second body; 112. Second limiting part; 113. Third limiting part; 114. Fourth limiting part; 115. Second through hole; 116. Third through hole; 12. Reset bracket; 121. First limiting part; 122. First body; 123. First through hole; 124. Fourth through hole; 13. First elastic element; 14. Limiting bracket; 15. Second elastic element; 16. Drive assembly; 161. Drive element; 162. Backrest side panel; 163. Angle adjuster; 164. Drive rod; 17. First connecting piece; 18. First bushing; 19. Second bushing; 20. Fixed bracket; 21. Second connecting piece; 22. Third connecting piece; 23. Third bushing; a. First direction; b. Second direction; c. Rotation axis;

[0038] 2. Cable. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0040] This application provides a linkage device; please refer to [linkage device]. Figures 1 to 3 The linkage device 1 includes an unlocking bracket 11, which is connected to a cable 2. The cable 2 is connected to the unlocking mechanism of the folding headrest in the seat. When the seat is folded, the unlocking bracket 11 drives the cable 2 to move, thereby unlocking the folding headrest and folding it.

[0041] The linkage device 1 includes a reset bracket 12, which is movably connected to the unlocking bracket 11. During the unlocking process (folding the seat), the reset bracket 12 is used to drive the unlocking bracket 11 to move, thereby driving the cable 2 to move. That is, the reset bracket 12 plays a driving role for the unlocking bracket 11.

[0042] The reset bracket 12 includes a first limiting part 121, and the unlocking bracket 11 is used to stop with the first limiting part 121 to limit the first reset position of the reset bracket 12. During the process of resetting the seat, the reset bracket 12 will move relative to the unlocking bracket 11. The stop between the unlocking bracket 11 and the first limiting part 121 can limit the first reset position of the reset bracket 12 after reset. That is, for the reset bracket 12, the unlocking bracket 11 plays a limiting role, and correspondingly, the first limiting part 121 plays the role of the reset stop point of the reset bracket 12.

[0043] The linkage device 1 includes a first elastic element 13, which connects the first limiting part 121 and the unlocking bracket 11. The first elastic element 13 provides a first force to the reset bracket 12, causing the reset bracket 12 to move to a first reset position. That is, during the process of resetting the seat, the reset bracket 12 stretches the first elastic element 13 as it moves relative to the unlocking bracket 11. After resetting, the reset bracket 12 moves back to the first reset position under the action of the first elastic element 13. In other words, the first limiting part 121 also serves as the connection point of the first elastic element 13.

[0044] It should be noted that the first reset position refers to the initial position of the reset bracket 12. When the seat is reset, the reset bracket 12 will move relative to the unlock bracket 11. After the reset is completed, the reset bracket 12 will return to the initial position, which is the first reset position, under the action of the first elastic element 13.

[0045] In the linkage device 1 of this application embodiment, the first reset position of the reset bracket 12 is limited by the unlocking bracket 11 and the first limiting part 121. At the same time, the first elastic member 13 is connected to the first limiting part 121, so that the first limiting part 121 can limit the connection position of the first elastic member 13. That is, the first limiting part 121 can simultaneously serve as a reset stop point and an elastic member connection point, thereby helping to simplify the cooperation between the reset bracket 12 and the unlocking bracket 11, thereby simplifying the overall structure of the linkage device 1 and reducing the space ratio of the linkage device 1.

[0046] In some embodiments, please refer to Figure 3The reset bracket 12 includes a first body 122, which is rotatably connected to the unlocking bracket 11. A first limiting part 121 is connected to the first body 122 and protrudes from the first body 122. That is, during the reset process, the reset bracket 12 will rotate relative to the unlocking bracket 11. By setting the first limiting part 121 to protrude from the first body 122, it is helpful for the connection design between the first limiting part 121 and the first elastic member 13, and avoids interference between the unlocking bracket 11 and the first elastic member 13 during the rotation of the reset bracket 12.

[0047] In some embodiments, the first limiting portion 121 extends relative to the first body 122 toward the unlocking bracket 11 and extends to the side of the unlocking bracket 11 opposite to the first body 122, and the first elastic member 13 is located on the side of the unlocking bracket 11 opposite to the first body 122. That is, the first limiting portion 121 extends to the side of the unlocking bracket 11 opposite to the first body 122 so that the first elastic member 13 can be hooked on the side of the unlocking bracket 11 opposite to the first body 122, thereby further reducing the risk of interference between the unlocking bracket 11 and the first elastic member 13 during the rotation of the reset bracket 12.

[0048] In some embodiments, please refer to Figure 3 The unlocking bracket 11 includes a second body 111, which is rotatably connected to the first body 122 about the rotation axis c. The first limiting part 121 is used to stop the second body 111 on one side in the direction perpendicular to the rotation axis c. That is, the first limiting part 121 protrudes from the first body 122 and passes around the second body 111 on one side in the direction perpendicular to the rotation axis c. When the first limiting part 121 stops the second body 111, the first limiting part 121 can directly overlap the side of the second body 111 on that side. When unlocking, the first limiting part 121 can directly apply force to the side of the second body 111 on that side to drive the unlocking bracket 11 to rotate. This structural design makes the cooperation between the reset bracket 12 and the unlocking bracket 11 simple and convenient.

[0049] In some embodiments, the unlocking bracket 11 includes a second limiting portion 112 connected to a second body 111. The second limiting portion 112 extends away from the first body 122 relative to the second body 111. A first elastic member 13 connects the second limiting portion 112 and the first limiting portion 121. That is, the second limiting portion 112 and the first limiting portion 121 extend in the same direction, while the first limiting portion 121 protrudes from the first body 122 and bypasses the side surface of the second body 111. The first elastic member 13 is connected to the second limiting portion 112 and the first limiting portion 121, such that the direction of the first force applied by the first elastic member 13 tends to be parallel to the plane where the first body 122 and the second body 111 are located, that is, the direction of the first force tends to be perpendicular to the contact surface of the first limiting portion 121 and the second body 111, thereby helping to improve the contact stability between the first limiting portion 121 and the second body 111.

[0050] It should be noted that the linkage device 1 also includes a first connector 17. A first through hole 123 is provided on the first body 122, and a second through hole 115 is provided on the second body 111 at the position corresponding to the first through hole 123. The first connector 17 passes through the second through hole 115 and the first through hole 123 in sequence, and rotatably connects the second body 111 and the first body 122.

[0051] The first connecting member 17 can be a stepped bolt, and the diameter of the second through hole 115 is larger than the diameter of the first through hole 123. The linkage device 1 also includes a first bushing 18 and a second bushing 19. The first bushing 18 is disposed in the first through hole 123 and is used to match the step with the smaller diameter in the first connecting member 17. The second bushing 19 is disposed in the second through hole 115 and is used to match the step with the larger diameter in the first connecting member 17.

[0052] Please see Figure 2 and Figure 3 The linkage device 1 also includes a fixed bracket 20, a composite bracket and an unlocking bracket 11 which are rotatably connected to the fixed bracket 20. That is, the first connecting member 17 passes through the second through hole 115 and the first through hole 123 in sequence and is connected to the fixed bracket 20 so that the composite bracket and the unlocking bracket 11 can rotate relative to the first connecting member 17.

[0053] In some embodiments, when the reset bracket 12 is in the first reset position, the first limiting part 121 abuts against the unlocking bracket 11. That is, in the initial state, the reset bracket 12 directly abuts against the unlocking bracket 11 through the first limiting part 121. During the reset process, the reset bracket 12 disengages from the unlocking bracket 11. After the reset is completed, the reset bracket 12 returns to the state of abutting against the unlocking bracket 11. By designing the reset bracket 12 and the unlocking bracket 11 to abut against each other, the unlocking bracket 11 and the reset bracket 12 can directly interact under the action of the first elastic member 13, thereby ensuring the stability of the overall structure of the linkage device 1. At the same time, designing the reset bracket 12 and the unlocking bracket 11 to abut against each other allows the reset bracket 12 to directly act on the unlocking bracket 11 during unlocking, thereby facilitating the smooth progress of the unlocking process.

[0054] In some embodiments, the linkage device 1 further includes a limiting bracket 14 and a second elastic member 15. The limiting bracket 14 is used to stop the unlocking bracket 11 to limit the second reset position of the unlocking bracket 11. The second elastic member 15 is connected to the limiting bracket 14 and the unlocking bracket 11 and is used to provide a second force to the unlocking bracket 11 to move the unlocking bracket 11 to the second reset position. That is, during the process of unlocking the seat, the unlocking bracket 11 will rotate under the action of the reset bracket 12 and drive the pull cable 2 to move. After unlocking is completed, the unlocking bracket 11 will move back to the second reset position under the action of the second elastic member 15 to avoid the pull cable 2 being in a state of tension for a long time, thereby helping to improve the overall service life of the linkage device 1.

[0055] It should be noted that the second reset position refers to the initial position of the unlocking bracket 11. When the seat is unlocked, the unlocking bracket 11 will move relative to the limiting bracket 14. After the unlocking is completed, the unlocking bracket 11 will return to the initial position, which is the second reset position, under the action of the second elastic element 15.

[0056] The limiting bracket 14 is connected to the fixed bracket 20, meaning that the position of the limiting bracket 14 remains unchanged during the unlocking and resetting process. The limiting bracket 14 is also used to engage with the cable 2 to ensure the stability of the cable 2 during movement.

[0057] In some embodiments, the unlocking bracket 11 includes a third limiting portion 113, and a limiting bracket 14 is used to stop with the third limiting portion 113 to limit the second reset position of the unlocking bracket 11. The third limiting portion 113 is used to connect with the cable 2. That is, the part of the unlocking bracket 11 that stops with the limiting bracket 14 and the part that drives the cable 2 to move are the same location. This arrangement simplifies the overall structure of the linkage device 1 and makes it easier to judge the moving distance and return state of the cable 2, thereby helping to reduce the risk of fatigue failure of the cable 2.

[0058] It should be noted that the linkage device 1 also includes a second connector 21. A third through hole 116 is provided on the third limiting part 113. The second connector 21 passes through the third through hole 116 and is connected to the third limiting part 113. The second connector 21 is used to connect with the cable 2 so as to drive the cable 2 to move when the unlocking bracket 11 rotates.

[0059] In some embodiments, the unlocking bracket 11 includes a fourth limiting portion 114 connected to a third limiting portion 113. A second elastic member 15 connects the fourth limiting portion 114 and the limiting bracket 14. That is, the part of the unlocking bracket 11 used to stop with the limiting bracket 14 and the part used to connect with the second elastic member 15 are different. This is because the second elastic member 15 itself has a certain length. This arrangement ensures that when the unlocking bracket 11 stops with the limiting bracket 14 and is in the second reset position, the second elastic member 15 can have sufficient tension, thereby ensuring the stability of the cooperation between the unlocking bracket 11 and the limiting bracket 14.

[0060] In some examples, the fourth limiting part 114 protrudes from the third limiting part 113, and the second elastic member 15 is located in the area enclosed by the third limiting part 113 and the fourth limiting part 114. That is, the distance between the fourth limiting part 114 and the limiting bracket 14 is greater than the distance between the third limiting part 113 and the limiting bracket 14, so that when the third limiting part 113 and the limiting bracket 14 stop, the second elastic member 15 has sufficient setting space, so that the second elastic member 15 has sufficient tension to ensure the contact stability between the unlocking bracket 11 and the limiting bracket 14.

[0061] In some embodiments, when the unlocking bracket 11 is in the second reset position, the unlocking bracket 11 abuts against the limiting bracket 14. That is, in the initial state, the unlocking bracket 11 directly abuts against the limiting bracket 14 through the third limiting part 113. During the unlocking process, the unlocking bracket 11 disengages from the limiting bracket 14. After the unlocking is completed, the unlocking bracket 11 returns to the state of abutting against the limiting bracket 14. By designing the unlocking bracket 11 and the limiting bracket 14 to abut against each other, the unlocking bracket 11 and the limiting bracket 14 can directly interact under the action of the second elastic member 15, thereby ensuring the stability of the overall structure of the linkage device 1.

[0062] In some embodiments, the unlocking bracket 11 is connected to the pull cable 2. The linkage device 1 further includes a drive assembly 16, which is movably connected to the reset bracket 12. The drive assembly 16 drives the reset bracket 12 to rotate, and the reset bracket 12 drives the unlocking bracket 11 to rotate, thereby moving the pull cable 2. The drive assembly 16 is rotatably connected to the fixed bracket 20. The drive assembly 16 includes a backrest side plate 162, an adjuster 163, and a drive rod 164. The backrest side plate 162 is connected to the fixed bracket 20 via the adjuster 163. The drive rod 164 and the adjuster 163 are in clearance fit. When unlocking or resetting, the drive rod 164 rotates, causing the adjuster 163 to rotate, thus rotating the backrest side plate 162 relative to the fixed bracket 20, thereby driving the reset bracket 12 to rotate.

[0063] The backrest side panel 162 is provided with a driving member 161. When the backrest side panel 162 rotates, the driving member 161 will abut against the reset bracket 12 to provide force to the reset bracket 12 and drive the reset bracket 12 to rotate. When the backrest side panel 162 rotates to an appropriate position, the driving member 161 will disengage from the reset bracket 12 and stop driving. At this time, the reset bracket 12 will return to the initial position under the action of the first elastic member 13 and / or the second elastic member 15.

[0064] It should be noted that the linkage device 1 also includes a third connector 22 and a third bushing 23. A fourth through hole 124 is provided on the first body 122 of the reset bracket 12. The third bushing 23 is located in the fourth through hole 124 and cooperates with the third connector 22 to connect the third connector 22 to the reset bracket 12. The third connector 22 is used to abut against the drive member 161 in the drive assembly 16. That is, when the drive assembly 16 drives the reset bracket 12 to rotate, it applies a force to the third connector 22 through the drive member 161, thereby driving the reset bracket 12 to rotate. The reset bracket 12 drives the unlocking bracket 11 to rotate, thereby driving the cable 2 to move. When the drive member 161 disengages from the third connector 22, the drive assembly 16 stops driving the reset bracket 12.

[0065] It should be noted that, in addition to the above-mentioned linkage method, the drive component 161 and the cable 2 can also be linked through cam or gear transmission to achieve the purpose of unlocking.

[0066] In some embodiments, the linkage device 1 includes an unlocked state and a reset state. The unlocked state refers to the state when the seat back is folded, and the reset state refers to the state when the seat back is unfolded.

[0067] Please refer to Figure 4When the linkage device 1 switches from the reset state to the unlock state, that is, when the seat back is unlocked, the drive assembly 16 drives the reset bracket 12 to rotate in the first direction a. The reset bracket 12 drives the unlock bracket 11 to rotate in the first direction a, so that the unlock bracket 11 is disengaged from the stop bracket 14 and drives the cable 2 to move. When the drive assembly 16 is disengaged from the reset bracket 12, the second elastic member 15 is used to provide a second force to the unlock bracket 11, so that the unlock bracket 11 rotates in the opposite direction of the first direction a to the second reset position.

[0068] In other words, during the unlocking process, the reset bracket 12 and the unlocking bracket 11 rotate synchronously to move the pull cable 2, thereby unlocking the folding headrest and allowing it to fold. Once the folding headrest is unlocked, the drive component 161 in the drive assembly 16 rotates until it disengages from the reset bracket 12 and stops driving the reset bracket 12. At this time, the unlocking bracket 11 rotates in the opposite direction of the first direction a under the action of the second elastic element 15, driving the reset bracket 12 to rotate synchronously until the unlocking bracket 11 returns to its initial position (second reset position). During this process, the drive assembly 16 can continue to rotate until the seat is fully folded.

[0069] Please see Figure 5 When the linkage device 1 switches from the unlocked state to the reset state, i.e., when the seat back is resetting, the drive assembly 16 drives the reset bracket 12 to rotate in the second direction b, so that the reset bracket 12 disengages from the unlocking bracket 11. When the drive assembly 16 disengages from the reset bracket 12, the first elastic member 13 provides a first force to the first limiting part 121, so that the reset bracket 12 rotates in the opposite direction of the second direction b to the first reset position. The second direction b is opposite to the first direction a.

[0070] In other words, during the reset process, the unlocking bracket 11 remains stationary, while the drive assembly 16 drives the reset bracket 12 to rotate and disengage from the unlocking bracket 11. When the drive assembly 16 rotates to the appropriate position, the drive element 161 in the drive assembly 16 disengages from the reset bracket 12 and stops driving the reset bracket 12. At this time, the reset bracket 12 rotates in the opposite direction b under the action of the first elastic element 13 until the reset bracket 12 returns to its initial position (first reset position). During this process, the drive assembly 16 can continue to rotate until the seat is fully deployed.

[0071] In some examples, in the initial state, that is, when the reset bracket 12 is in the first reset position and the unlock bracket 11 is in the second reset position, the reset bracket 12 and the unlock bracket 11 directly abut against each other, and the unlock bracket 11 and the limiting bracket 14 directly abut against each other. The contact point between the reset bracket 12 and the unlock bracket 11 and the connection point where the reset bracket 12 and the unlock bracket 11 are rotatably connected form a first line. The contact point between the unlock bracket 11 and the limiting bracket 14 and the connection point where the reset bracket 12 and the unlock bracket 11 are rotatably connected form a second line. Along the second direction b, the first line and the second line form an obtuse angle. That is, during the reset process, the rotatable angle of the reset bracket 12 is an obtuse angle, so that the rotation of the reset bracket 12 during the reset process is not limited by the drive component 16. The reset bracket 12 can rotate until the drive component 161 disengages from the reset bracket 12, thereby making the rotatable stroke of the reset bracket 12 during the reset process longer.

[0072] This application also provides a seat, which includes a linkage device. The specific structure of the linkage device is as described in the above embodiments. Since the seat in this application adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0073] The seat includes a linkage device 1 and a folding headrest. The linkage device 1 includes an unlocking bracket 11, which is connected to a cable 2. The cable 2 is connected to the unlocking mechanism of the folding headrest. When the seat is folded, the unlocking bracket 11 drives the cable 2 to move, thereby unlocking the folding headrest and folding it.

[0074] This application also provides a vehicle, which includes a seat. The specific structure of the seat is as described in the above embodiments. Since the vehicle in this application adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0075] It should be noted that the vehicle can be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions on this.

[0076] It should be noted that the vehicle includes multiple rows of seats, and the rear seats can be folded down as needed. Specifically, the seats are folded or unfolded in the following ways:

[0077] Please see Figure 4 and Figure 5When the seat back is unlocked, the drive assembly 16 drives the reset bracket 12 to rotate in the first direction a. The reset bracket 12 drives the unlocking bracket 11 to rotate in the first direction a, so that the unlocking bracket 11 disengages from the stop bracket 14 and moves the pull cable 2, thereby unlocking the folding headrest and folding it down. After the folding headrest is unlocked, the drive component 161 in the drive assembly 16 rotates until it disengages from the reset bracket 12 and stops driving the reset bracket 12. At this time, the unlocking bracket 11 rotates in the opposite direction a under the action of the second elastic element 15, and drives the reset bracket 12 to rotate synchronously until the unlocking bracket 11 returns to its initial position (second reset position). During this process, the drive assembly 16 can continue to rotate until the seat is folded down.

[0078] When the seat backrest is reset, the drive assembly 16 drives the reset bracket 12 to rotate in the second direction b, so that the reset bracket 12 disengages from the unlock bracket 11. When the drive assembly 16 rotates to the appropriate position, the drive element 161 in the drive assembly 16 disengages from the reset bracket 12 and stops driving the reset bracket 12. At this time, the reset bracket 12 rotates in the opposite direction b under the action of the first elastic element 13 until the reset bracket 12 returns to its initial position (first reset position); during this process, the drive assembly 16 can continue to rotate until the seat is fully unfolded.

[0079] In the description of this application, 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0080] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0081] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0082] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A linkage characterized by, The linkage device comprises: an unlocking support; a reset support movably connected with the unlocking support; the reset support comprises a first limiting portion, and the unlocking support is used to abut against the first limiting portion to define a first reset position of the reset support; a first elastic member connecting the first limiting portion and the unlocking support, and the first elastic member is used to provide a first acting force to the reset support to move the reset support to the first reset position.

2. The linkage of claim 1, wherein The reset support comprises a first body, the first body is rotatably connected with the unlocking support, the first limiting portion is connected with the first body, and the first limiting portion protrudes from the first body.

3. The linkage of claim 2, wherein, The first limiting portion extends towards the unlocking support relative to the first body and extends to a side of the unlocking support away from the first body, and the first elastic member is located at the side of the unlocking support away from the first body.

4. The linkage of claim 2, wherein, The unlocking support comprises a second body, the second body is rotatably connected with the first body about a rotation axis, and the first limiting portion is used to abut against a side of the second body in a direction perpendicular to the rotation axis.

5. The linkage of claim 4, wherein, The unlocking support comprises a second limiting portion, the second limiting portion is connected with the second body, the second limiting portion extends away from the first body relative to the second body, and the first elastic member connects the second limiting portion and the first limiting portion.

6. The linkage of any one of claims 1 to 5, wherein, When the reset support is located at the first reset position, the first limiting portion abuts against the unlocking support.

7. The linkage of any one of claims 1 to 5, wherein, The linkage device further comprises: a limiting support used to abut against the unlocking support to define a second reset position of the unlocking support; a second elastic member connected with the limiting support and the unlocking support, and the second elastic member is used to provide a second acting force to the unlocking support to move the unlocking support to the second reset position.

8. The linkage of claim 7, wherein, The unlocking support comprises a third limiting portion, the limiting support is used to abut against the third limiting portion to define the second reset position of the unlocking support, and the third limiting portion is used to be connected with a cable.

9. The linkage of claim 8, wherein, The unlocking support comprises a fourth limiting portion, the fourth limiting portion is connected with the third limiting portion, and the second elastic member connects the fourth limiting portion and the limiting support.

10. The linkage of claim 9, wherein, The fourth limiting portion protrudes from the third limiting portion, and the second elastic member is located in an area surrounded by the third limiting portion and the fourth limiting portion.

11. The linkage according to any one of claims 8 to 10, wherein, When the unlocking support is located at the second reset position, the unlocking support abuts against the limiting support.

12. The linkage of claim 7, wherein, The unlocking support is used to be connected with a cable, the linkage device further comprises a driving assembly, the driving assembly is movably connected with the reset support, the driving assembly is used to drive the reset support to rotate, the reset support drives the unlocking support to rotate to drive the cable to move.

13. The linkage of claim 12, wherein, The linkage device comprises a reset state and an unlocking state, when the linkage device is switched from the reset state to the unlocking state, the driving assembly drives the reset support to rotate in a first direction, the reset support drives the unlocking support to rotate in the first direction and drives the cable to move. When the driving assembly is disengaged from the reset support, the second elastic member is configured to provide the second force to the unlocking support to rotate the unlocking support to the second reset position in a reverse direction of the first direction.

14. The linkage of claim 13, wherein, When the linkage device is switched from the unlocking state to the reset state, the driving assembly drives the reset support to rotate in a second direction; When the driving assembly is disengaged from the reset support, the first elastic member is configured to provide the first force to the first limiting portion to rotate the reset support to the first reset position in a reverse direction of the second direction; the second direction is opposite to the first direction.

15. A seat, characterized in that The linkage device of any one of claims 1 to 14.

16. A vehicle characterized by comprising: The seat of claim 15.

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