Linkage unlocking mechanism for unlocking headrest

Abstract

The utility model relates to a linkage unlocking mechanism for unlocking a headrest, which comprises an unlocking handle which is arranged to rotate between a locking position for locking the headrest and an unlocking position for unlocking the headrest relative to the headrest; the unlocking piece is arranged to be capable of moving relative to the headrest; when the unlocking piece moves in the first direction relative to the headrest, the unlocking handle can be pushed to rotate from the locking position to the unlocking position and cross over the unlocking handle, so that the unlocking handle rotates back to the locking position from the unlocking position; when the unlocking piece moves back and forth in the second direction opposite to the first direction relative to the headrest, the unlocking handle is kept at the locking position. According to the utility model, the headrest can be automatically locked after being unlocked, so that the problem that the headrest is always in an active state after the position is adjusted, so that the experience feeling of a user is relatively poor is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile seats, and specifically to a linkage unlocking mechanism for unlocking headrests. Background Technology

[0002] Car seats have many adjustable parts, such as the backrest, the armrest located in the middle of the rear seat, and the headrest, all of which can be rotated and adjusted. When the armrest is in the flat position, the headrest should ideally be in a folded state to support the armrest. However, the adjustment mechanism in the current technology can unlock the headrest, but it cannot lock the headrest after it is folded. This means that the headrest is always in an active state after being unlocked, so it cannot support the armrest, which brings a bad user experience. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the prior art and provide a linkage unlocking mechanism for unlocking headrests, which solves the problem that existing headrests cannot be locked after unlocking, resulting in the headrests not being able to support the armrests and causing a poor user experience.

[0004] The technical solution to achieve the above objectives is:

[0005] A linkage unlocking mechanism for unlocking a headrest is provided, comprising:

[0006] An unlocking handle is configured to rotate relative to the headrest between a locked position where the headrest is locked and an unlocked position where the headrest is unlocked;

[0007] An unlocking element, which is configured to be movable relative to the headrest;

[0008] When the unlocking component moves relative to the headrest in a first direction, it can push the unlocking handle to rotate from the locked position to the unlocked position and pass over the unlocking handle so that the unlocking handle rotates back from the unlocked position to the locked position; when the unlocking component moves relative to the headrest in a second direction opposite to the first direction, the unlocking handle remains in the locked position.

[0009] Furthermore, it also includes a stop portion installed on the headrest, the stop portion being configured to restrict the rotation of the unlocking member when the unlocking member moves relative to the headrest in a first direction, thereby allowing the unlocking handle to be pushed from the locked position to the unlocked position.

[0010] Furthermore, it also includes a first elastic element, one end of which is connected to the unlocking handle and the other end of which is connected to the headrest, for driving the unlocking handle to rotate from the unlocked position back to the locked position.

[0011] Furthermore, it also includes a cable, one end of which acts on the unlocking component and the other end of which is connected to the rotating object. As the rotating object rotates in a third direction, the cable is pulled, thereby pulling the unlocking component to move relative to the headrest in a first direction to unlock the headrest.

[0012] Furthermore, the rotating object is the armrest in the middle of the rear seat of the car or the backrest of the car seat; the headrest is disposed on the rotating object.

[0013] Furthermore, the other end of the cable is eccentrically positioned relative to the rotation center of the rotating object, so that the cable can be pulled or released during the rotation of the rotating object.

[0014] Furthermore, it also includes a sliding member slidably mounted on the headrest; the unlocking member is rotatably mounted on the sliding member, one end of the cable is connected to the sliding member, and the unlocking member is moved relative to the headrest in a first direction by pulling the sliding member.

[0015] Furthermore, it also includes a second elastic element, one end of which is connected to the unlocking element and the other end of which is connected to the sliding element. The second elastic element generates a restoring force when the unlocking element rotates in a third direction, thereby applying a restoring force to the unlocking element after it disengages from the unlocking handle, so that the unlocking element rotates and resets in a fourth direction opposite to the third direction.

[0016] Furthermore, the unlocking component includes an unlocking part and a limiting part fixedly connected to the unlocking part;

[0017] When the unlocking member moves relative to the headrest in the first direction, the unlocking part can push the unlocking handle to rotate from the locked position to the unlocked position so that the unlocking member passes over the unlocking handle; at the same time, the limiting part contacts the sliding member to restrict the rotation of the unlocking part.

[0018] Furthermore, it also includes a third elastic element, one end of which is connected to the headrest and the other end of which is connected to the slider. The third elastic element generates a restoring force when the slider is pulled by the cable, thereby applying a restoring force to the slider when the cable is released so that the slider moves in the second direction.

[0019] Furthermore, during the rotation of the rotating object toward the third direction, the restoring force generated by the third elastic element is applied to the sliding element when the cable is released, so that the sliding element moves toward the second direction so that the unlocking element does not cross the unlocking handle. Thus, during the rotation of the rotating object toward the fourth direction opposite to the third direction, when the sliding element is pulled by the cable and moves toward the first direction, the unlocking element will not push the unlocking handle to rotate from the locked position to the unlocked position.

[0020] Furthermore, as the rotating object rotates in a fourth direction opposite to the third direction, the restoring force generated by the third elastic element is applied to the slider when the cable is released, causing the slider to move in the second direction so that the unlocking element passes the unlocking handle and returns to its initial position.

[0021] Furthermore, the headrest is provided with a groove corresponding to the sliding member, and the sliding member is slidably disposed in the groove.

[0022] Furthermore, the headrest is mounted on the rotating object via a headrest insert rod, and the cable portion passes through the headrest insert rod.

[0023] The beneficial effects of this utility model's linkage unlocking mechanism for unlocking headrests are as follows:

[0024] The unlocking mechanism of this invention allows the unlocking component to push the unlocking handle to rotate from the locked position to the unlocked position, thereby unlocking the headrest. When pushing the unlocking handle to rotate, the unlocking component can pass over the handle, releasing the positional restriction and allowing the handle to rotate back to its original position, thus automatically locking the headrest. This allows the headrest to be locked in position immediately after adjustment. When used with the armrest, the headrest provides reliable support, and when adjusting the armrest, simply moving the headrest back to its original position ensures it remains locked, improving the user experience. When used with the backrest, the headrest can be unlocked and folded down when the backrest is rotated downwards to avoid collision with the seat in front. When adjusting the backrest, simply moving the headrest back to its original position ensures it remains locked, further enhancing the user experience.

[0025] Furthermore, the movement adjustment of the unlocking component is carried out under the action of external force. When the unlocking component moves back to its original position, it can avoid the unlocking handle by rotating when it comes into contact with the unlocking handle, thus realizing the automatic return of the unlocking component without affecting the locking position of the unlocking handle. Attached Figure Description

[0026] Figure 1This is a three-dimensional structural diagram of the linkage unlocking mechanism of this utility model installed on a headrest.

[0027] Figure 2 for Figure 1 A magnified view of a portion of the central linkage unlocking mechanism.

[0028] Figure 3 for Figure 1 A top view of the central linkage unlocking mechanism.

[0029] Figure 4 The side view shows the linkage unlocking mechanism of this utility model for unlocking a headrest, which is installed on a headrest and omits one side baffle.

[0030] Figure 5 This is a schematic diagram of a portion of a headrest used for driving the linkage unlocking mechanism of the present invention.

[0031] Figure 6 This is a schematic diagram of the structure of another part of a headrest used to drive the linkage unlocking mechanism for unlocking the headrest according to this utility model.

[0032] Figure 7 The linkage unlocking mechanism of this utility model for unlocking the headrest is installed on... Figure 6 The diagram shows the exploded disintegration structure of the core component.

[0033] Figures 8 to 10 This is a schematic diagram showing the disassembled steps of the linkage unlocking mechanism for unlocking the headrest, which drives the unlocking handle to the unlocking position.

[0034] Figures 11 to 15 This is a schematic diagram showing the disassembled steps of the linkage unlocking mechanism for unlocking the headrest, in which the unlocking handle rotates from the unlocked position back to the locked position and the unlocking component automatically returns to its original position after the headrest is unlocked.

[0035] Figure 16 This is a schematic diagram of the linkage unlocking mechanism of the present invention for unlocking the headrest, which is used in the armrest and the headrest.

[0036] Figure 17 for Figure 14 A magnified view of a portion of point A in the middle.

[0037] Figure 18 This is a schematic diagram of the armrest used in the linkage unlocking mechanism for unlocking the headrest according to this utility model.

[0038] Figure 19 for Figure 18 The diagram shows the handrail structure in the flattened position.

[0039] Figures 20 to 23This is a schematic diagram showing the disassembly steps of adjusting the armrest from the starting position to the flat position in the linkage unlocking mechanism for unlocking the headrest according to this utility model.

[0040] Figure 24 and Figure 25 This is a schematic diagram showing the disassembled steps of the armrest returning to the starting position in the linkage unlocking mechanism for unlocking the headrest according to this utility model.

[0041] Figure 26 This is a schematic diagram of the structure of the linkage unlocking mechanism of this utility model, in which the blocking part is fixed on the headrest.

[0042] Figure Labels

[0043] 11-Headrest; 111-Headrest insert rod; 1111-Insertion section; 1112-Horizontal section; 1113-Transition section; 1114-Notch; 112-Slide groove; 113-Core component; 114-Headrest frame; 12-Rotating object; 121-Rotating bracket; 13-First elastic element; 14-Elastic element;

[0044] 21-Unlock handle; 22-Unlocking component; 221-Unlocking part; 222-Limiting part; 23-Pull cable; 24-Second elastic component; 25-Third elastic component; 26-Sliding component; 261-Blocking part. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] See Figure 1 This utility model provides a linkage unlocking mechanism for unlocking headrests. During the rotation and folding of the armrest in the middle of the rear seat or the backrest of the car seat, the unlocking handle is pushed to the unlocking position to unlock the headrest. At this time, the headrest automatically folds under the action of elastic elements such as torsion springs. Then, the unlocking handle rotates from the unlocking position back to the locking position to lock the headrest, keeping it in the folded state. This provides support for the armrest when it is folded up and avoids the front seat during the backrest folding up. When adjusting the armrest and backrest, the headrest can be moved back to its original position, thus improving the user experience. The linkage unlocking mechanism for unlocking headrests of this utility model is described below with reference to the accompanying drawings.

[0047] See Figure 1 This diagram shows a three-dimensional structural schematic of the linkage unlocking mechanism of this utility model installed on a headrest. (See attached diagram.) Figure 2 , showed Figure 1 A magnified view of a portion of the central linkage unlocking mechanism. (See attached image) Figure 4This image shows a side view of the linkage unlocking mechanism for unlocking a headrest, installed on a headrest with one side panel omitted. The following is a combination of... Figure 1 , Figure 2 and Figure 4 The present invention describes the linkage unlocking mechanism for unlocking the headrest.

[0048] like Figure 1 , Figure 2 and Figure 4 As shown, the linkage unlocking mechanism for unlocking the headrest of this utility model includes an unlocking handle 21 and an unlocking component 22. The unlocking handle 21 is configured to rotate relative to the headrest 11 between a locked position and an unlocked position. Figure 8 As shown, the unlocking handle 21 is in the locked position at this time, as... Figure 10 As shown, at this time, the unlocking handle 21 rotates from the locked position to the unlocked position under the push of the unlocking member 22; the unlocking member 22 is configured to be movable relative to the headrest 11; as Figures 8 to 10 As shown, when the unlocking component 22 moves relative to the headrest 11 in the first direction F1 (i.e., from the perspective of the internal arrangement space of the headrest, it is more advantageous to arrange the unlocking component to move in the first direction to unlock), it can push the unlocking handle 21 to rotate from the locked position to the unlocked position, and then combine with... Figure 11 As shown, the unlocking component 22 can also be moved past the unlocking handle 21, so that the unlocking handle 21 can rotate from the unlocked position back to the locked position; combined with Figure 12 and Figure 13 As shown, when the unlocking member 22 moves back to its original position relative to the headrest 11 in the second direction F2, which is opposite to the first direction F1, the unlocking handle 21 remains in the locked position.

[0049] The linkage unlocking mechanism of this utility model unlocks the headrest by moving the unlocking component, which in turn rotates the unlocking handle. When unlocking, the headrest automatically folds under the action of elastic elements such as torsion springs installed on it. Further movement of the unlocking component can pass over the unlocking handle, allowing the handle to rotate from the unlocked position back to the locked position, thus locking the headrest and maintaining its current state.

[0050] In one specific embodiment of this utility model, a first elastic member 13 is also included. One end of the first elastic member 13 is connected to the unlocking handle 21, and the other end is connected to the headrest 11, for driving the unlocking handle 21 to rotate from the unlocked position back to the locked position.

[0051] The first elastic element 13 allows the unlocking handle 21 to reset and also ensures that when the unlocking member 22 moves back relative to the headrest 11, the unlocking handle 21 remains in the locked position, thus allowing the unlocking member 22 to rotate past the unlocking handle 21. Preferably, the first elastic element 13 can be an elastic element such as a torsion spring or a tension spring.

[0052] In one specific embodiment of this utility model, such as Figure 3 , Figure 4 and Figure 7 As shown, it also includes a cable 23, one end of which acts on the unlocking element 22, in conjunction with... Figure 14 and Figure 15 As shown, the other end of the cable 23 is connected to the rotating object 12. As the rotating object 12 rotates in a third direction, the cable 23 is pulled, which in turn pulls the unlocking member 22 to move relative to the headrest 11 in the first direction to unlock the headrest 11.

[0053] By setting a cable 23 to connect the rotating object 12 and the unlocking component 22, the rotation adjustment of the rotating object 12 is used to pull the unlocking component 22 to move, thus realizing the linkage between the rotating object 12 and the unlocking component 22.

[0054] Furthermore, the rotating object 12 is either the armrest in the middle of the rear seat of the car or the backrest of the car seat; the headrest 11 is mounted on the rotating object 12. For example... Figure 18 and Figure 19 As shown, a headrest 11 is mounted on a rotating object 12. In this embodiment, the rotating object 12 is an armrest. The armrest rotates downwards to a flattened state. During rotation, the headrest can be unlocked via the linkage unlocking mechanism of this invention, causing it to fold over. The headrest is then locked, providing support to the flattened armrest. Furthermore, when adjusting the armrest's return position, the headrest can be moved back to its original position, improving the user experience.

[0055] When the seat back is rotated (object 12), it can rotate forward to a flattened state, thus folding the backrest. During this folding process, if the headrest 11 is not folded down, it may collide with the seat back in front, hindering the folding. The linkage unlocking mechanism for unlocking the headrest in this invention is applied to the headrest. It unlocks the headrest during the backrest rotation and folding process, allowing it to fold, and then locks it, preventing the headrest from being in a flexible state after folding. Furthermore, when adjusting the backrest return position, the headrest can be moved back to its original position, improving the user experience.

[0056] Furthermore, such as Figure 17As shown, the other end of the cable 23 is eccentrically positioned relative to the rotation center of the rotating object 12, so that the cable 23 can be pulled or released during the rotation of the rotating object 12.

[0057] By using an eccentric setting, the armrest or backrest pulls a cable to unlock the headrest during the adjustment process of rotating towards the front of the vehicle. If the other end of the cable is placed at the center of rotation of the rotating object, the rotation of the object will not pull the cable. Specifically, the exact position of the eccentric setting can be set according to the required travel distance of the unlocking component 22.

[0058] A rotating bracket 121 is provided at the rotation center of the rotating object 12, and the other end of the cable 23 is provided on the rotating bracket 121.

[0059] Furthermore, such as Figure 2 , Figure 4 and Figure 7 As shown, it also includes a slider 26 that slides on the headrest 11; an unlocking member 22 is rotatably disposed on the slider 26, and one end of a cable 23 is connected to the slider 26. By pulling the slider 26, the unlocking member 22 is pulled relative to the headrest 11 and moved in the first direction.

[0060] A slider 26 is provided to install the unlocking member 22. The slider 26 enables the unlocking member 22 to move and facilitates the setting of the elastic element of the unlocking member 22, thereby enabling the unlocking member 22 to move and rotate relative to the headrest 11 at the same time.

[0061] In one specific embodiment of this utility model, such as Figure 4 As shown, it also includes a stop 261. The stop is mounted on the headrest. The stop 261 is configured to restrict the rotation of the unlocking member 22 when the unlocking member 22 moves relative to the headrest 11 in a first direction, thereby allowing the unlocking handle 21 to be pushed from the locked position to the unlocked position.

[0062] In some embodiments, see Figure 8 The stop part 261 is fixed to the headrest (such as the headrest frame). The stop part 261 is supported by the limiting part so that the unlocking member rotates in a fourth direction opposite to the third direction.

[0063] Preferably, the abutment 261 can be moved and adjusted relative to the headrest 11 together with the unlocking member 22. The abutment 261 can be disposed on the sliding member 26 and can cooperate with a corresponding structure on the headrest 11 to restrict the unlocking member 22 from rotating in the fourth direction. For example, a groove is provided on the headrest 11 corresponding to the unlocking member 22. The unlocking member 22 and the abutment 261 are installed together on the sliding member 26, and the sliding member 26 slides within the groove. The abutment 261 can contact the bottom of the groove to restrict the unlocking member 22 from rotating in the fourth direction. Furthermore, a second elastic member 24 is also included. One end of the second elastic member 24 is connected to the unlocking member 22, and the other end is connected to the sliding member 26. Figures 11 to 15 As shown, the second elastic element 24 generates a restoring force when the unlocking member 22 rotates in a third direction, thereby applying a restoring force to the unlocking member 21 after the unlocking member 22 disengages from the unlocking handle 21, so that the unlocking member 22 rotates back to its original position in a fourth direction opposite to the third direction. Figures 11 to 15 In the illustrated embodiment, the second elastic element 24 is a tension spring. However, the second elastic element 24 is not limited to the structure of a tension spring; it can also be other elastic elements such as a torsion spring. For example, the torsion spring can be mounted on the rotating shaft of the unlocking member 22. The function of the second elastic element 24 is to allow the rotation of the unlocking member 22 to automatically reset.

[0064] The second elastic element is a coil spring. (See also...) Figure 8 The coil spring shown is in a compressed state. The coil spring has a certain stiffness. At this time, the coil spring is supported by the limiting part, so the coil spring has the function of a blocking part. The blocking part does not need to be set separately.

[0065] Furthermore, such as Figure 8 As shown, the unlocking member 22 includes an unlocking part 221 and a limiting part 222 fixedly connected to the unlocking part 221. When the unlocking member 22 moves relative to the headrest 11 in the first direction, the unlocking part 221 can push the unlocking handle 21 to rotate from the locked position to the unlocked position so that the unlocking member 22 passes over the unlocking handle 21. At the same time, the limiting part 222 contacts the sliding member 26 to restrict the rotation of the unlocking part 221.

[0066] The unlocking part 221 is provided corresponding to the unlocking handle 21, and the limiting part 222 is provided corresponding to the sliding member 26. The limiting part restricts the rotation of the unlocking part when the unlocking part pushes the unlocking handle, but does not restrict the rotation adjustment of the unlocking part during the return process.

[0067] Preferably, the unlocking part 221 and the limiting part 222 extend in opposite directions. A blocking part 261 is provided on the slider 26 corresponding to the limiting part 222. The blocking part 261 protrudes upward and its top can contact the limiting part 222, thereby restricting the unlocking part 22 from rotating in the fourth direction.

[0068] Furthermore, such as Figure 7 and Figure 8 As shown, it also includes a third elastic element 25, one end of which abuts against the headrest 11 and the other end of which is connected to the slider 26. The third elastic element generates a restoring force when the slider 26 is pulled by the cable 23, thereby applying a restoring force to the slider 26 when the cable 23 is released, causing the slider 26 to move back to its original position in the second direction. The third elastic element 25 is preferably a spring, which is preferably sleeved on the corresponding portion of the cable 23. By providing the third elastic element, the movement of the slider can be automatically reset.

[0069] During the rotation of the rotating object 12 in a third direction, the restoring force generated by the third elastic element 25 is applied to the sliding element 26 when the cable 23 is released, so that the sliding element 26 moves in the second direction so that the unlocking element 22 does not cross the unlocking handle 21. Therefore, during the rotation of the rotating object 12 in a fourth direction opposite to the third direction, when the sliding element 26 is pulled by the cable 23 and moves in the first direction, the unlocking element 22 will not push the unlocking handle 21 from the locked position to the unlocked position.

[0070] As the rotating object 12 rotates in a fourth direction opposite to the third direction, the restoring force generated by the third elastic element 25 is applied to the slider 26 when the cable (23) is released, so that the slider 26 moves in the second direction, causing the unlocking element (22) to pass over the unlocking handle 21 and return to the initial position.

[0071] Furthermore, the travel of the cable 23 can be compensated by the energy storage travel of the third elastic element 25, thus eliminating the need for a compensation mechanism on the cable 23. Specifically, the cable 23 pulls the unlocking element 22 to move, pushing the unlocking handle 21 to the unlock position (unlocking the headrest). At this point, the cable 23 has not yet reached its limit position, and it can continue to move in the first direction, allowing the third elastic element to continue storing energy (compressing or stretching). As long as the travel of the cable 23 does not exceed the limit of the third elastic element, the cable 23 will not break, or in other words, it will not bear a large tension. Due to the eccentric setting at the other end of the cable, the cable will not remain taut during the rotation of the object. For example, when the object rotates to the latter half of its travel, the cable will be relaxed.

[0072] In one preferred embodiment, when the cable 23 pulls the slider 26 to move, the slider 26 compresses the third elastic member 25 to generate a restoring force. When the cable 23 is released, the third elastic member 25 applies a restoring force to the slider 26 to return to its original state, causing the slider 26 to move back to its original position in the second direction, while simultaneously causing the cable 23 to return to its original position. In another preferred embodiment, the third elastic member 25 may be located on the other side of the slider 26. That is, when the cable 23 pulls the slider 26 to move, the slider 26 stretches the third elastic member 25 to generate a restoring force. When the cable 23 is released, the third elastic member 25 applies a restoring force to the slider 26 to return to its original state, causing the slider 26 to move back to its original position in the second direction, while simultaneously causing the cable 23 to return to its original position.

[0073] The cable can be reset from the moment the headrest is unlocked until the object is rotated and laid flat, during which time the distance between the two ends of the cable will shorten.

[0074] Figures 8 to 15 The demonstration shows the action steps of the linkage unlocking mechanism of this utility model for unlocking a headrest, which rotates an object downward and flattens it in a vertical setting, and then flips it back to the vertical setting state. Figure 8 The initial position of the unlocking component shown corresponds to the initial state of the rotating object being set vertically. Figure 9 As shown, when the rotating object is flipped downwards, the rotating bracket drives the cable to pull the slider, and the slider slides in the first direction, so that the unlocking part of the unlocking member abuts against the unlocking handle. Figure 10 As shown, when the cable continues to pull the slider, the unlocking part pushes the unlocking handle to the unlock position, at which point the headrest unlocks. The headrest then flips over after unlocking. Figure 11 As shown, the cable continues to pull the slider, the unlocking part passes the unlocking handle, and the unlocking handle returns to the locked position under the elastic action of the first elastic element, so that the headrest is stably in the flipped-over state. Figure 12 The image shows the cable continuing to pull the slider forward, and the cable reaching its limit position. Figure 13 The image shows the object continuing to rotate downwards and flatten after the cable reaches its limit position. At this time, the unlocking part is located on the side of the unlocking handle furthest from the stop in the locked position, or against the side of the unlocking handle furthest from the stop. Figure 14 The image shows the relative positions of the unlocking part and the unlocking handle when the rotating object has flipped upwards and returned to its original position, and when the cable reaches its limit position again. (See also...) Figure 15During the process of rotating the object upwards and returning to its initial position, the unlocking part faces the fourth direction and rotates past the unlocking handle to be positioned on the side of the unlocking handle near the stop (i.e., the initial state of the unlocking component). Throughout the entire process of rotating the object downwards to lie flat and then upwards to its initial vertical state, the unlocking component unlocks only once. After the headrest is flipped, during the subsequent downward or upward rotation of the object, a better user experience can be obtained by applying the corresponding downward or upward rotational action to the headrest.

[0075] Furthermore, such as Figure 1 and Figure 2 As shown, the headrest 11 has a groove 112 corresponding to the sliding member 26, and the sliding member 26 is slidably disposed in the groove 112. The groove cooperates with the sliding member and can guide and limit the movement of the sliding member.

[0076] Preferably, the groove 112 can be formed on the headrest 11, for example, by recessing a corresponding portion of the headrest 11 inward to form the groove 112. Alternatively, the groove 112 can also be formed by providing a pair of baffles on the headrest 11, i.e., the gap between the pair of baffles forms the groove 112.

[0077] In one specific embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 14 As shown, the headrest 11 is mounted on the rotating object 12 via the headrest insert 111, and the cable 23 is partially inserted into the headrest insert 111.

[0078] Furthermore, the headrest insert 111 includes two vertically extending insert sections 1111, a horizontal section 1112 completely housed within the headrest 11, and a transition section 1113 connecting the horizontal section 1112 and the insert sections 1111. One end of the transition section 1113 connected to the horizontal section 1112 is provided with a notch 1114 for the cable 23 to pass through.

[0079] like Figure 1 As shown, when the cable 23 is arranged inside the headrest 11, it connects to the slider 26 and extends a distance in the direction of movement of the slider 26. Then it bends horizontally, extends to the corresponding end of the horizontal segment 1112, crosses the horizontal segment 1112, and bends horizontally again. When it reaches the other end of the horizontal segment 1112, it bends and extends into the notch 1114. It then runs along the corresponding transition segment 1113 and the insertion segment 1111 until it reaches the point of rotation of the rotating object 12 and is fixed therein. This arrangement of the cable inside the headrest avoids localized stress concentration, effectively protects the cable, reduces tension loss, and improves cable performance and durability.

[0080] like Figure 1 , Figures 5 to 7 As shown, the headrest 11 includes a core component 113 and a headrest frame 114. The core component 113 is sleeved on the horizontal section 1112 of the headrest insert 11, and the core component 113 is mounted on the headrest frame 114. Elastic elements such as torsion springs are provided on the core component 113 and the horizontal section 1112. These elastic elements apply a spring force to the core component 113 to allow it to rotate relative to the horizontal section 1112. Figure 20 As shown, the elastic element allows the core component 113 and the headrest frame 114 to rotate and fold downwards together, thus folding the headrest 11. A locking mechanism is provided inside the core component 113, which can lock the core component 113 of the headrest 11 and restrict its downward rotation and folding. The linkage unlocking mechanism of this utility model is provided on the headrest frame 114, wherein the unlocking handle 21 is connected to the locking mechanism. When the unlocking handle 21 is rotated to the unlock position, the locking mechanism is unlocked. When the locking mechanism is released from the restriction on the core component 113, the core component 113 can rotate and fold downwards under the action of the elastic element. When the unlocking handle 21 is rotated from the unlock position back to the locked position, the locking mechanism is locked, thus locking the headrest position.

[0081] The following is combined with Figures 18 to 23 The working process of the linkage unlocking mechanism for unlocking the headrest of this utility model is explained as shown in the figure.

[0082] like Figure 18 As shown, when the rotating object 12 is vertically positioned, the headrest 11 is in its designated position, at which point the headrest 11 provides support for the occupant's head. Combined with... Figure 19 and Figure 20 As shown, during the process of rotating object 12 rotating and flattening towards the front of the vehicle (or forward), when rotating object 12 rotates to a certain angle, it pulls the sliding member in the first direction by pulling the cable. The sliding member then moves the unlocking member in the first direction along with the unlocking member. The unlocking member pushes the unlocking handle to the unlock position, unlocking the headrest. Then, under the action of the elastic element 14 (such as a torsion spring), the headrest rotates downwards to a folded state. After the unlocking member moves past the unlocking handle in the first direction, the unlocking handle rotates back from the unlock position to the locked position, locking the headrest and keeping it in its current state. Figures 20 to 21 During the process, headrest 11 is locked. When rotating object 12 returns to its original position for adjustment, as... Figures 21 to 25 As shown, the headrest is always in a locked state. The rotating object 12 can be returned to its original position by moving the headrest 11. Figure 25 In this state, if it is necessary to return the headrest 11 to its original position... Figure 18 As shown, the headrest can be manually unlocked and then reset by the action of the first elastic element 13.

[0083] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A linkage unlocking mechanism for unlocking a headrest, characterized by, The headrest (11) comprises: a handle (21) arranged to rotate relative to the headrest (11) between a locking position for locking the headrest (11) and an unlocking position for unlocking the headrest (11); a unlocking member (22) arranged to be movable relative to the headrest (11); when the unlocking member (22) moves relative to the headrest (11) in a first direction, the unlocking member (22) pushes the handle (21) to rotate from the locking position to the unlocking position and to pass the handle (21) so that the handle (21) rotates from the unlocking position back to the locking position; when the unlocking member (22) moves relative to the headrest (11) in a second direction opposite to the first direction, the handle (21) remains in the locking position.

2. The linkage release mechanism for releasing a headrest according to claim 1, wherein The headrest (11) further comprises a stop portion (261) mounted on the headrest (11), the stop portion (261) is arranged to limit the rotation of the unlocking member (22) when the unlocking member (22) moves relative to the headrest (11) in the first direction, so that the unlocking member (22) pushes the handle (21) to rotate from the locking position to the unlocking position.

3. The linkage release mechanism for releasing a headrest according to claim 1, wherein The headrest (11) further comprises a first elastic member (13), one end of the first elastic member (13) is connected with the handle (21), and the other end of the first elastic member (13) is connected with the headrest (11), the first elastic member (13) is arranged to drive the handle (21) to rotate from the unlocking position back to the locking position.

4. The linkage release mechanism for releasing a headrest according to claim 1, wherein The headrest (11) further comprises a cable (23), one end of the cable (23) acts on the unlocking member (22), and the other end of the cable (23) is connected with a rotating object (12), during the rotation of the rotating object (12) in a third direction, the cable (23) is pulled, and then the unlocking member (22) is pulled to move relative to the headrest (11) in the first direction to unlock the headrest (11).

5. The linkage release mechanism for releasing a headrest according to claim 4, wherein The rotating object (12) is a middle armrest of a rear seat of a vehicle or a backrest of a seat of the vehicle, and the headrest (11) is arranged on the rotating object (12).

6. The linkage release mechanism for releasing a headrest according to claim 4, wherein The other end of the cable (23) is arranged eccentrically relative to a rotation center of the rotating object (12), so that the cable (23) can be pulled or relaxed during the rotation of the rotating object (12).

7. The linkage release mechanism for releasing a headrest according to claim 4, wherein The headrest (11) further comprises a sliding member (26) slidingly arranged on the headrest (11), the unlocking member (22) is rotatably arranged on the sliding member (26), and one end of the cable (23) is connected with the sliding member (26), the sliding member (26) is pulled to pull the unlocking member (22) to move relative to the headrest (11) in the first direction.

8. The linkage release mechanism for releasing a headrest according to claim 7, wherein The headrest (11) further comprises a second elastic member (24), one end of the second elastic member (24) is connected with the unlocking member (22), and the other end of the second elastic member (24) is connected with the sliding member (26), the second elastic member (24) generates a restoring force when the unlocking member (22) rotates in the third direction, so that the second elastic member (24) applies the restoring force to the unlocking member (22) to rotate the unlocking member (22) in a fourth direction opposite to the third direction after the unlocking member (22) is separated from the handle (21).

9. The linkage release mechanism for releasing a headrest according to claim 8, wherein, The unlocking piece (22) comprises an unlocking part (221) and a limiting part (222) fixedly connected with the unlocking part (221); When the unlocking piece (22) moves relative to the headrest (11) towards the first direction, the unlocking part (221) can push the unlocking handle (21) to rotate from the locking position to the unlocking position, so that the unlocking piece (22) passes the unlocking handle (21); meanwhile, the limiting part (222) is in contact with the sliding piece (26) to limit the rotation of the unlocking part (221).

10. The linkage release mechanism for releasing a headrest according to claim 7, wherein A third elastic piece (25) is further included, one end of the third elastic piece (25) being connected with the headrest (11) and the other end being connected with the sliding piece (26), the third elastic piece (25) generating a restoring force when the sliding piece (26) is pulled by the cable (23), so that the sliding piece (26) is moved towards the second direction when the cable (23) is relaxed.

11. The linked unlocking mechanism for unlocking the headrest according to claim 10, wherein, During the rotation of the rotating object (12) towards the third direction, the restoring force generated by the third elastic piece (25) is applied to the sliding piece (26) when the cable (23) is relaxed, so that the sliding piece (26) is moved towards the second direction, and the unlocking piece (22) does not pass the unlocking handle (21), so that during the rotation of the rotating object (12) towards the fourth direction opposite to the third direction, the sliding piece (26) is pulled by the cable (23) and moved towards the first direction, the unlocking piece (22) does not push the unlocking handle (21) to rotate from the locking position to the unlocking position.

12. The linkage release mechanism for releasing a headrest according to claim 10, wherein, During the rotation of the rotating object (12) towards the fourth direction opposite to the third direction, the restoring force generated by the third elastic piece (25) is applied to the sliding piece (26) when the cable (23) is relaxed, so that the sliding piece (26) is moved towards the second direction, and the unlocking piece (22) passes the unlocking handle (21) to return to the initial position.

13. The linkage release mechanism for releasing a headrest according to claim 7, wherein A sliding groove (112) corresponding to the sliding piece (26) is arranged on the headrest (11), and the sliding piece (26) is slidably arranged in the sliding groove (112).

14. The linkage release mechanism for releasing a headrest according to claim 4, wherein The headrest (11) is arranged on the rotating object (12) through a headrest insertion rod (111), and the cable (23) is partially arranged in the headrest insertion rod (111).

Images