Headrest adjusting device, headrest, automobile seat and automobile

Abstract

The utility model relates to a headrest adjusting device, a headrest, an automobile seat and a vehicle, the headrest adjusting device comprises a first adjusting mechanism, and the first adjusting mechanism comprises a main body part, a first adjusting mechanism and a second adjusting mechanism; the first adjusting piece is movably installed on the main body piece so as to move among a first gear, a second gear and a return gear, the second gear is located between the first gear and the return gear, the first gear is closer to the main body piece relative to the second gear, and the first adjusting piece comprises a gear part; the non-return piece is movably installed on the main body piece, and when the first adjusting piece moves from the first gear to the second gear, the non-return piece is connected to the gear part so as to prevent the first adjusting piece from resetting; the first adjusting mechanism further comprises a first locking piece, and when the first adjusting piece moves from the second gear to the return gear, the first locking piece is connected to the non-return piece so as to allow the first adjusting piece to reset.

Description

Technical Field

[0001] This application relates to the field of automotive interior and exterior technology, and in particular to a headrest adjustment device, a headrest, an automotive seat, and a vehicle. Background Technology

[0002] The car headrest adjustment device includes a front and rear adjustment mechanism. In the related technology, the front and rear adjustment mechanism is difficult to reset during operation, and when the front and rear adjustment mechanism is adjusted between different positions, the adjustment part cannot be accurately fixed at each position, thus affecting the adjustment and use of the headrest. Utility Model Content

[0003] This application provides a headrest adjustment device, a headrest, a car seat, and a vehicle, and improves the reset structure of the front and rear adjustment mechanism of the headrest adjustment device to at least partially solve the above-mentioned technical problems.

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

[0005] Main components;

[0006] A first adjusting member, movably mounted to the main body, is movable between a first gear position, a second gear position, and a return position, wherein the second gear position is located between the first gear position and the return position, and the first gear position is closer to the main body relative to the second gear position. The first adjusting member includes a gear position portion; and

[0007] A check valve is movably mounted on the main body. When the first adjusting member moves from the first position to the second position, the check valve is connected to the position portion to prevent the first adjusting member from resetting.

[0008] The first adjustment mechanism further includes a first locking member. When the first adjustment member moves from the second gear position to the return position, the first locking member is connected to the anti-return member to allow the first adjustment member to reset.

[0009] Optionally, the first locking member is installed on the main body member, and when the first adjusting member moves from the second position to the return position, the first locking member is detachably connected to the anti-return member.

[0010] Optionally, the first locking member is installed on the main body member, and the first locking member is used to engage the check valve member.

[0011] Optionally, the first locking member includes a locking hook, and the anti-return member includes a protrusion that can be engaged with the locking hook.

[0012] Optionally, the first locking member includes two locking hooks, and the anti-return member includes two protrusions, each of which engages with one of the locking hooks.

[0013] Optionally, the first locking member includes a retaining ring, and the anti-return member includes a protrusion that can be engaged within the retaining ring.

[0014] Optionally, the check valve includes a limiting part, and the main body includes a mating part. The limiting part is configured to abut against the mating part so that when the first adjusting member moves from the second gear position to the return position, the protrusion engages with the retaining ring.

[0015] Optionally, the main body is provided with a groove, and the check valve is movably installed in the groove.

[0016] Optionally, the check valve includes a pawl, and the gear position is provided with a plurality of ratchet grooves, the plurality of ratchet grooves corresponding to the first gear position and the second gear position; wherein, when the first adjusting member moves from the first gear position to the second gear position, the pawl of the check valve is received in the ratchet groove corresponding to the second gear position.

[0017] Optionally, the first adjusting member includes a reset part, which is used to abut against the check member when the first adjusting member is reset to reset the check member.

[0018] Optionally, the first adjustment mechanism further includes a first elastic element, and the anti-return element is connected to the main body through the first elastic element. When the first adjustment element moves from the second gear position to the return position, the first elastic element is in an elastic deformation state.

[0019] Optionally, the first adjustment mechanism further includes a second elastic element, the first adjustment element being connected to the main body through the second elastic element, and the second elastic element being in an elastic deformation state when the first adjustment element moves from the first gear position to the second gear position.

[0020] Optionally, the first adjusting member is movably mounted on the main body member along a first direction; the headrest adjusting device further includes a second adjusting mechanism, the second adjusting mechanism including a rod and a second adjusting component, the main body member is movably mounted on the rod along a second direction, the first direction and the second direction intersect, wherein the second adjusting component is used to adjust the position of the main body member on the rod.

[0021] Optionally, the second adjustment component includes a second locking member movably mounted on the main body to connect or disconnect the insert.

[0022] Optionally, the insertion rod is provided with a plurality of slots arranged along the second direction, and the second locking member engages or disengages from the corresponding slots.

[0023] Optionally, the second adjustment mechanism further includes a third elastic element connected to the second locking element. When the second locking element disengages from the insertion rod, the third elastic element is in an elastic deformation state.

[0024] Optionally, the second adjustment component further includes an unlocking member movably mounted on the main body, the unlocking member being used to push against the second locking member to disengage the second locking member from the insert.

[0025] Optionally, the unlocking member is movably installed on the main body along a third direction, the third direction being opposite to the plane containing the first direction and the second direction; wherein, the unlocking member is provided with a pushing slope, the pushing slope being inclined relative to the first direction and the third direction, and used to push against the second locking member.

[0026] Optionally, the second locking member is bent to engage with the pushing slope.

[0027] Optionally, the second adjustment mechanism further includes a fourth elastic element, which connects the unlocking element and the main body. When the unlocking element pushes against the second locking element, the fourth elastic element is in an elastic deformation state.

[0028] Optionally, it also includes a third adjustment mechanism, which includes an ear piece connector and two ear pieces located on opposite sides of the ear piece connector, each ear piece being rotatably connected to the ear piece connector to move away from or closer to the main body.

[0029] Optionally, the ear piece connector is snapped onto the first adjusting member.

[0030] According to a second aspect of this application, a headrest is also provided, the headrest including the headrest adjustment device described above.

[0031] According to a third aspect of this application, a car seat is also provided, the car seat including the headrest described above.

[0032] According to a fourth aspect of this application, a vehicle is also provided, the vehicle including the aforementioned automobile seat.

[0033] In the headrest adjustment device of this application embodiment, a first locking member is provided. When the first adjustment member is in the return position, a check member is connected to the first locking member to allow the first adjustment member to reset. When the first adjustment member is in a non-return position, such as the first or second position, the check member is connected to the position portion of the first adjustment member to prevent the first adjustment member from resetting, allowing the first adjustment member to be smoothly held fixed in the first or second position, thereby making the adjustment operation of the first adjustment mechanism smoother and more stable.

[0034] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0035] 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.

[0036] 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.

[0037] Figure 1 This is an overall structural diagram of the headrest adjustment device provided in an exemplary embodiment of this disclosure;

[0038] Figure 2 This is an exploded view of the first adjustment mechanism of the headrest adjustment device provided in the first exemplary embodiment of this disclosure;

[0039] Figure 3a This is a cross-sectional view at point AA of the first adjusting member of the first adjusting mechanism of the headrest adjusting device provided in the exemplary embodiment of this disclosure, when the first adjusting member is in the first position.

[0040] Figure 3b This is a cross-sectional view at point AA of the first adjusting member of the first adjusting mechanism of the headrest adjusting device provided in the exemplary embodiment of this disclosure, when the first adjusting member is in the second position.

[0041] Figure 3c This is a cross-sectional view at point AA of the first adjusting member of the first adjusting mechanism of the headrest adjusting device provided in the exemplary embodiment of this disclosure, when the first adjusting member is in the return position.

[0042] Figure 4a This is a diagram showing the connection state between the first adjusting member and the first locking member of the first adjusting mechanism of the headrest adjusting device provided in the first exemplary embodiment of this disclosure when the first adjusting member is in the first position.

[0043] Figure 4b This is a diagram showing the connection state between the first adjusting member and the first locking member of the first adjusting mechanism of the headrest adjusting device provided in the first exemplary embodiment of this disclosure when the first adjusting member is in the return position.

[0044] Figure 5a This is a schematic diagram of the state of the first elastic member when the first adjusting member of the first adjusting mechanism of the headrest adjusting device provided in the exemplary embodiment of this disclosure is in the first position;

[0045] Figure 5b This is a schematic diagram of the state of the first elastic member when the first adjusting member of the first adjusting mechanism of the headrest adjusting device provided in the exemplary embodiment of this disclosure is in the return position;

[0046] Figure 6a This is a schematic diagram of the state of the second elastic member when the first adjusting member of the first adjusting mechanism of the headrest adjusting device provided in the exemplary embodiment of this disclosure is in the first position;

[0047] Figure 6b This is a schematic diagram of the state of the second elastic member when the first adjusting member of the first adjusting mechanism of the headrest adjusting device provided in the exemplary embodiment of this disclosure is in the return position;

[0048] Figure 7 This is a perspective view of the first adjustment mechanism of the headrest adjustment device provided in the exemplary embodiment of this disclosure after the first adjustment member has been removed;

[0049] Figure 8 This is a perspective view of the check element of the first adjustment mechanism of the headrest adjustment device provided in the exemplary embodiment of this disclosure;

[0050] Figure 9 This is an exploded view of the first adjustment mechanism of the headrest adjustment device provided in the second exemplary embodiment of this disclosure;

[0051] Figure 10a This is a diagram showing the connection state between the first adjusting member and the first locking member of the first adjusting mechanism of the headrest adjusting device provided in the second exemplary embodiment of this disclosure when the first adjusting member is in the first position.

[0052] Figure 10b This is a diagram showing the connection state between the first adjusting member and the first locking member of the first adjusting mechanism of the headrest adjusting device provided in the second exemplary embodiment of this disclosure when the first adjusting member is in the return position.

[0053] Figure 11 This is an exploded view of the second adjustment mechanism of the headrest adjustment device provided in an exemplary embodiment of this disclosure;

[0054] Figure 12a This is a perspective view of the second adjustment mechanism of the headrest adjustment device provided in an exemplary embodiment of this disclosure;

[0055] Figure 12b yes Figure 12a A magnified view of a portion of the image;

[0056] Figure 13 This is an exploded view of the third adjustment mechanism of the headrest adjustment device provided in an exemplary embodiment of this disclosure;

[0057] Figure 14 This is a perspective view of the third adjustment mechanism of the headrest adjustment device provided in an exemplary embodiment of this disclosure;

[0058] Explanation of reference numerals in the attached figures:

[0059] 100. Headrest adjustment device; 10. First adjustment mechanism; 1. Main body; 11. Rotating shaft; 12. Groove; 13. Fitting part; 2. First adjustment component; 21. Gear position part; 211. Rattle groove; 212. Rattle groove wall; 213. End ratchet groove wall; 22. Reset part; 3. Check valve; 31. Pawl; 32. Protrusion; 33. Protrusion; 34. Limiting part; 4. First locking component; 41. Locking hook; 42. Snap ring; 51. First elastic component; 52. Second elastic element; 20. Second adjustment mechanism; 6. Insert rod; 61. Slot; 7. Second adjustment assembly; 71. Second locking element; 72. Unlocking element; 721. Unlocking button; 722. Unlocking push plate; 723. Pushing slope; 81. Third elastic element; 82. Fourth elastic element; 30. Third adjustment mechanism; 91. Ear plate connector; 92. First ear plate; 93. Second ear plate; 941. First connecting shaft; 942. Second connecting shaft; Detailed Implementation

[0060] 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.

[0061] Embodiments of this application provide a six-way headrest installed in a car seat, the six-way headrest including a headrest adjustment device, such as... Figure 1 and Figure 2 As shown, the headrest adjustment device 100 includes a first adjustment mechanism 10 and a second adjustment mechanism 20 (e.g., ...). Figure 11 (as shown) and the third adjustment mechanism 30 (as shown) Figure 13 As shown in the figure, the first adjustment mechanism 10 is used to adjust the front cover of the headrest to flip back and forth, the second adjustment mechanism 20 is used to adjust the headrest to move up and down, and the third adjustment mechanism 30 is used to adjust the ear pieces of the headrest to flip back and forth.

[0062] In some embodiments, such as Figure 2 As shown, the first adjustment mechanism 10 includes a main body 1, a first adjustment component 2, a check component 3, and a first locking component 4.

[0063] The first adjusting component 2 is movably mounted on the main body 1. The main body 1 can be the back cover of the headrest, and the first adjusting component 2 can be the front cover assembly of the headrest. Both the top of the main body 1 and the top of the first adjusting component 2 are provided with a rotating shaft hole. The main body 1 and the first adjusting component 2 are positioned and connected by the rotating shaft. When the headrest needs to be adjusted forward and backward, the bottom of the first adjusting component 2 is manually pulled. The first adjusting component 2 will rotate around the rotating shaft connected at the top, thereby realizing the forward and backward adjustment function of the headrest.

[0064] like Figures 3a to 3c As shown, the first adjusting member 2 can move between a first gear position, a second gear position, and a return position. The second gear position is located between the first gear position and the return position. The first adjusting member 2 is closer to the main body 1 when it is in the first gear position compared to when it is in the second gear position. In a specific embodiment, the first adjusting member 2 can move between the first gear position, the second gear position, the third gear position, the fourth gear position, the fifth gear position, and the return position, as shown. Figure 3a The diagram shows the connection state between the first adjusting member 2 and the main body member 1 when the first adjusting member 2 is in the first position. Figure 3b The diagram shows the connection state between the first adjusting member 2 and the main body member 1 when the first adjusting member 2 is in the third position. Figure 3c The diagram shows the connection state between the first adjusting member 2 and the main body member 1 when the first adjusting member 2 is in the return position.

[0065] Continue to refer to Figures 3a to 3c The check valve 3 is movably installed on the main body 1. In specific implementation, the check valve 3 has cylindrical rotating shafts at both ends, and the main body 1 has grooves 12 (e.g., Figure 9 The check valve 3 is installed in the corresponding groove 12 of the main body 1 via rotating shafts at both ends. The check valve 3 can rotate up and down relative to the main body 1.

[0066] Continue to refer to Figure 3a and Figure 3b The first adjusting member 2 includes a gear position 21. When the first adjusting member 2 moves from the first gear position to the second gear position, the check member 3 is connected to the gear position 21 to prevent the first adjusting member 2 from resetting.

[0067] refer to Figure 4a When the first adjusting member 2 is in the first gear, the second gear, or another non-returning position, the check member 3 and the first locking member 4 are not connected, allowing the first adjusting member 2 to move from the first gear to the second gear. (Reference) Figure 4bWhen the first adjusting member 2 is in the return position, the check member 3 and the first locking member 4 are connected to allow the first adjusting member 2 to reset.

[0068] By providing a first locking member 4, when the first adjusting member 2 is in the return position, the anti-return member 3 is connected to the first locking member 4, allowing the first adjusting member 2 to reset. When the first adjusting member 2 is in a non-return position, such as the first, second, third, fourth, or fifth gear, the anti-return member 3 is connected to the gear position 21 of the first adjusting member 2, preventing the first adjusting member 2 from resetting. This allows the first adjusting member 2 to smoothly remain fixed in the first, second, third, fourth, or fifth gear, making the adjustment operation of the first adjusting mechanism 10 smoother and more stable.

[0069] The first locking element 4 is fixedly installed on the main body 1. (Reference) Figure 4a When the first adjusting member 2 is in the first gear position, the second gear position, or other non-return position, the anti-return member 3 and the first locking member 4 are in a detachable connection state, so that the first adjusting member 2 can move from the first gear position to the second gear position, and remain in the second gear position without resetting from the second gear position to the first gear position.

[0070] Continue to refer to Figures 3a to 3c The first adjusting member 2 has a gear position 21 with multiple ratchet grooves 211, and the check member 3 includes a pawl 31, which can be received in the ratchet grooves 211. The multiple ratchet grooves 211 of the first adjusting member 2 correspond to the first gear position and the second gear position, respectively, and the pawl 31 of the check member 3 is received in the ratchet grooves 211. In one embodiment, the gear position 21 of the first adjusting member 2 has six ratchet grooves 211, and the check member 3 includes two pawls 31, which can be received in two adjacent ratchet grooves 211 respectively. Figure 3a As shown, when the first adjusting member 2 is in the first position, the two pawls 31 of the check member 3 are respectively received in the first ratchet groove and the second ratchet groove. When the first adjusting member 2 is in the second position, the two pawls 31 of the check member 3 are respectively received in the second ratchet groove and the third ratchet groove. Figure 3b As shown, when the first adjusting member 2 is in the third position, the two pawls 31 of the check member 3 are respectively housed in the third ratchet groove and the fourth ratchet groove.

[0071] When the first adjusting member 2 is in the first position, pulling the first adjusting member 2 to rotate causes the multiple ratchet grooves 211 of the position part 21 of the first adjusting member 2 to rotate, thereby causing the pawl 31 to disengage from the first ratchet groove and the second ratchet groove. When the first adjusting member 2 rotates to the second position, the pawl 31 engages in the second ratchet groove and the third ratchet groove.

[0072] Continue to refer to Figure 5a and Figure 5bThe first adjusting mechanism 10 also includes a first elastic element 51, which includes a tension spring. A check member 3 is connected to the main body 1 via the first elastic element 51. Hooks are provided on both the check member 3 and the main body 1. The upper end of the first elastic element 51 engages with the check member 3, and the lower end engages with the main body 1. During the rotation of the first adjusting member 2, the ratchet wall of the ratchet groove 211 of the first adjusting member 2 drives the pawl 31 of the check member 3 to rotate upwards, thereby pulling the first elastic element 51 upwards. When the first adjusting member 2 is adjusted to the height corresponding to a certain gear position, the first elastic element 51 connected to the check member 3 drives the pawl 31 to rotate downwards to engage in the corresponding ratchet groove 211. Understandably, since the ratchet wall of each ratchet 211 is set to be inclined toward the next gear, after the ratchet 211 of the first adjusting member 2 is disengaged from the pawl 31 of the check member 3, it can only be rotated and adjusted toward the next gear and cannot return to the previous gear.

[0073] Continue to refer to Figure 3c When the first adjusting member 2 is in the return position, the pawl 31 of the check member 3 abuts against the ratchet wall of the last ratchet groove 211 of the first adjusting member 2. The ratchet wall of the last ratchet groove 211 protrudes relative to the ratchet walls of the ratchet grooves 211 corresponding to other positions, thereby pushing the check member 3 to engage with the first locking member 4. Figure 4b As shown. When the check valve 3 is engaged with the first locking member 4, the check valve 3 rotates upward to its highest position, and the first elastic member 51 is in an extended state. It is understandable that when the first adjusting member 2 is adjusted between other positions (excluding the return position), the pawl 31 of the check valve 3 abuts against the ratchet groove 211 corresponding to the position, and the corresponding ratchet groove wall cannot push the check valve 3 to engage with the first locking member 4. Figure 4a As shown.

[0074] Continue to refer to Figure 3a and Figure 3c The first adjusting member 2 also includes a reset part 22, which is configured to abut against the check member 3 when the first adjusting member 2 is reset, so that the check member 3 is disengaged from the first locking member 4 and thus the check member 3 is reset. The reset part 22 includes a reset rib, which protrudes from the ratchet wall where the first ratchet is located. Therefore, the reset part 22 can abut against the check member 3 and push the check member 3 to rotate downward and disengage from the first locking member 4. At the same time, the first elastic member 51 connected to the check member 3 drives the check member 3 to rotate downward into the ratchet 211 corresponding to the first position of the first adjusting member 2.

[0075] Continue to refer to Figure 6a and Figure 6bThe first adjusting mechanism 10 also includes a second elastic element 52. One end of the second elastic element 52 is connected to the main body 1, and the other end is connected to the first adjusting member 2. The second elastic element 52 includes a tension spring. When the first adjusting member 2 is in the first position, such as... Figure 6a As shown, the second elastic element 52 is in a relaxed state. When the first adjusting member 2 rotates forward, the second elastic element 52 moves with the first adjusting member 2 and is thus stretched. When the first adjusting member 2 rotates to the position shown... Figure 3c When the return position is shown, the second elastic element 52 is in a stretched state. Since the check element 3 is engaged with the first locking element 4, the check element 3 cannot provide a fixing effect on the first adjusting element 2. The second elastic element 52 will drive the first adjusting element 2 to reset to the initial state, that is, the first gear position.

[0076] Continue to refer to Figure 4a , Figure 4b , Figure 7 and Figure 8 In the first embodiment provided in this application, the first locking member 4 includes two locking hooks 41, which are respectively disposed on both sides of the check member 3. Two protrusions 32 are respectively provided on both sides of the check member 3. When the check member 3 is lifted upward to a certain height by the end ratchet wall 213 corresponding to the reset position of the first adjusting member 2, the protrusions 32 engage with the corresponding locking hooks 41. However, the height of the ratchet wall corresponding to the other positions of the first adjusting member 2 is lower than the height of the end ratchet wall 213. Therefore, the protrusions 32 of the check member 3 cannot be abutted upward by the ratchet wall corresponding to the other positions to the height of the engaging position of the locking hooks 41, and thus the protrusions 32 of the check member 3 cannot engage with the locking hooks 41.

[0077] refer to Figure 9 , Figure 10a and Figure 10b In the second embodiment provided in this application, the first locking member 4 includes a retaining ring 42, which is disposed on the top of the check member 3. A protrusion 33 is provided at the top of the check member 3. When the check member 3 is lifted to a certain height by the end ratchet wall 213 corresponding to the reset position of the first adjusting member 2, the protrusion 33 is engaged in the elastic retaining ring 42.

[0078] Continue to refer to Figure 9 The check valve 3 is movably engaged in the groove 12 of the main body 1, and the retaining ring 42 is fixedly installed on the main body 1. The check valve 3 includes a limiting part 34, and the main body 1 includes a mating part 13. When the protrusion 33 at the top of the check valve 3 is pushed upward to a certain height by the end ratchet wall 213 corresponding to the reset stop of the first adjusting part 2, the limiting part 34 abuts against and limits the mating part 13, so that the protrusion 33 can be stably engaged in the retaining ring 42.

[0079] In some embodiments, such as Figure 11 , Figure 12a and Figure 12b As shown, the second adjustment mechanism 20 is configured to adjust the headrest vertically. The second adjustment mechanism 20 includes a rod 6 and a second adjustment component 7. The main body 1 is movably mounted on the rod 6 along a second direction, and the second adjustment component 7 is used to adjust the mounting position of the main body 1 on the rod 6. A first adjustment component 2 is rotatably connected to the main body 1 along a first direction, and the main body 1 is movably mounted on the rod 6 along a second direction. The first direction is set as the front-back direction of the headrest. Figure 3c The X direction is shown. The second direction is set as the up and down direction of the headrest, as shown. Figure 12a The Y direction is shown. The first and second directions intersect. By simultaneously providing a first adjustment mechanism that can adjust the forward and backward movement of the headrest and a second adjustment mechanism 20 that can adjust the up and down movement of the headrest on the headrest adjustment device, multi-directional adjustment operation of the headrest can be realized.

[0080] In some embodiments, the second adjustment component 7 includes a second locking member 71 and an unlocking member 72. The second locking member 71 is movably mounted on the main body 1 to connect or disconnect the insert 6, and the unlocking member 72 is movably mounted on the main body 1 to push against the second locking member 71 so that the second locking member 71 disengages from the insert 6.

[0081] In some embodiments, the second adjustment mechanism 20 further includes a third elastic member 81, which is mounted on the main body 1 and disposed on the second locking member 71. When the second locking member 71 disengages from the insert rod 6, the third elastic member 81 is in an elastic deformation state, so that when the unlocking member 72 loses its pushing effect on the second locking member 71, the third elastic member 81 pushes the second locking member 71 to reset and lock it in the slot 61 of the insert rod 6.

[0082] In some embodiments, the second adjustment mechanism 20 further includes a fourth elastic member 82. One end of the fourth elastic member 82 is connected to the unlocking member 72, and the other end of the fourth elastic member 82 is connected to the main body member 1. When the unlocking member 72 is subjected to external force and pushes against the second locking member 71, the fourth elastic member 82 is in an elastic deformation state. When the unlocking member 72 loses the external force, the unlocking member 72 is driven by the fourth elastic member 82 and then reset.

[0083] In some embodiments, the insertion rod 6 is provided with a plurality of slots 61 arranged along the second direction, and the second locking member 71 engages or disengages from the corresponding slots 61. When the insertion rod 6 is engaged in different slots 61, the corresponding installation position of the main body 1 on the insertion rod 6 is different, thereby realizing the up-down adjustment of the main body 1.

[0084] The unlocking component 72 includes an unlocking button 721 and an unlocking pusher 722 connected to each other. The unlocking button 721 protrudes relative to the main body 1. Pressing the unlocking button 721 pushes the unlocking pusher 722 towards the second locking component 71. The unlocking pusher 722 has a pushing slope 723, which abuts against the second locking component 71. The second locking component 71 is disengaged from the slot 61 of the insert rod 6 by the action of the unlocking pusher 722, allowing the main body 1 to be adjusted up and down to a certain height along the second direction. The unlocking pusher 722 is movably installed on the main body along a third direction, which is eccentric to the plane containing the first and second directions. The pushing slope 723 is inclined relative to the first and third directions. In a specific embodiment, the third direction is set as the left and right direction of the main body 1, such as... Figure 12a The z-direction is shown. Bosses are provided on both sides of the unlocking pusher 722, and a strip-shaped hole is provided on the main body 1. The unlocking pusher 722 is engaged in the strip-shaped hole of the main body 1 through the bosses and can move left and right within the strip-shaped hole. The fourth elastic element 82 is installed below the unlocking pusher 722. When the unlocking button 721 pushes the unlocking pusher 722, the unlocking pusher 722 causes the fourth elastic element to stretch. When no force is applied to the unlocking button 721, the unlocking pusher 722 returns to its original position due to the elastic force of the fourth elastic element. Simultaneously with the unlocking movement of the second locking member 71, the third elastic element 81 is compressed. When the second locking member 71 loses the pushing force of the unlocking member 72, the second locking member 71 is driven by the third elastic element 81 and re-engages in the slot 61 of the insertion rod 6.

[0085] The second locking member 71 is bent to fit against the pushing slope 723, which facilitates the contact between the pushing slope 723 and the second locking member 71, thereby stably pushing the second locking member 71 out of the slot 61 of the insert rod 6, making operation convenient.

[0086] In some embodiments, reference Figure 13 and Figure 14 The third adjustment mechanism 30 is used to adjust the forward and backward rotation of the headrest ear pieces. The third adjustment mechanism 30 includes an ear piece connector 91, a first ear piece 92, and a second ear piece 93. The first ear piece 92 and the second ear piece 93 are connected to opposite sides of the ear piece connector 91. The first ear piece 92 is rotatably connected to one side of the ear piece connector 92 via a first connecting shaft 941. The first ear piece 92 is configured to rotate relative to the ear piece connector 91. The second ear piece 93 is rotatably connected to the other side of the ear piece connector 91 via a second connecting shaft 942. The second ear piece 93 is configured to rotate relative to the ear piece connector 91.

[0087] The ear piece connector 91 is snapped into the first adjusting member 2. In one embodiment, the ear piece connector 91 is snapped into the slot on the first adjusting member 2 by a plurality of snap-fit ​​structures provided on its rear side, thereby making the third adjusting mechanism 30 of the headrest adjusting device stably connected to the first adjusting member 2.

[0088] According to a second aspect of this disclosure, a headrest is provided, comprising the aforementioned headrest adjustment device, a front headrest cover, and a rear headrest cover. The front headrest cover includes a cover, foam, and a third adjustment mechanism. A first adjustment mechanism is provided between the front headrest cover and the rear headrest cover, and a second adjustment mechanism is connected to the first adjustment mechanism. This headrest possesses all the beneficial effects of the aforementioned headrest adjustment device, which will not be elaborated further herein.

[0089] According to a third aspect of this disclosure, a car seat is provided that includes the headrest described above. This car seat has all the beneficial effects of the headrest described above, which will not be elaborated further herein.

[0090] According to a fourth aspect of this disclosure, a vehicle is provided that includes the aforementioned automobile seat. The vehicle possesses all the beneficial effects of the aforementioned automobile seat, which will not be elaborated further herein.

[0091] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0092] 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.

[0093] 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.

[0094] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0095] 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 scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A headrest adjustment device, characterized in that, The headrest adjustment device includes a first adjustment mechanism, the first adjustment mechanism comprising: Main component (1); A first adjusting member (2) is movably mounted on the main body (1) to move between a first gear position, a second gear position, and a return position, wherein the second gear position is located between the first gear position and the return position, and the first gear position is closer to the main body (1) relative to the second gear position; the first adjusting member (2) includes a gear position portion (21); and The check valve (3) is movably mounted on the main body (1). When the first adjusting member (2) moves from the first gear position to the second gear position, the check valve (3) is connected to the gear position part (21) to prevent the first adjusting member (2) from resetting. The first adjustment mechanism further includes a first locking member (4). When the first adjustment member (2) moves from the second gear position to the return position, the first locking member (4) is connected to the anti-return member (3) to allow the first adjustment member (2) to reset.

2. The headrest adjustment device according to claim 1, characterized in that, The first locking member (4) is installed on the main body (1). When the first adjusting member (2) moves from the second gear position to the return position, the first locking member (4) is detachably connected to the anti-return member (3).

3. The headrest adjustment device according to claim 1, characterized in that, The first locking member (4) is installed on the main body (1) and is used to engage the anti-return member (3).

4. The headrest adjustment device according to claim 3, characterized in that, The first locking member (4) includes a locking hook (41), and the anti-return member (3) includes a protrusion (32), which can be engaged with the locking hook (41).

5. The headrest adjustment device according to claim 4, characterized in that, The first locking member (4) includes two locking hooks (41), and the anti-return member (3) includes two protrusions (32), each of the protrusions (32) being engaged with one of the locking hooks (41).

6. The headrest adjustment device according to claim 3, characterized in that, The first locking member (4) includes a retaining ring (42), and the anti-return member (3) includes a protrusion (33), which can be engaged in the retaining ring (42).

7. The headrest adjustment device according to claim 6, characterized in that, The check valve (3) includes a limiting part (34), and the main body (1) includes a mating part (13). The limiting part (34) is configured to abut against the mating part (13) so that when the first adjusting member (2) moves from the second gear position to the return position, the protrusion (33) engages with the retaining ring (42).

8. The headrest adjustment device according to claim 1, characterized in that, The main body (1) is provided with a groove (12), and the anti-return element (3) is movably installed in the groove (12).

9. The headrest adjustment device according to claim 1, characterized in that, The check valve (3) includes a pawl (31), and the gear position (21) is provided with a plurality of ratchet grooves (211), which correspond to the first gear position and the second gear position; wherein, when the first adjusting member (2) moves from the first gear position to the second gear position, the pawl (31) of the check valve (3) is received in the ratchet groove (211) corresponding to the second gear position.

10. The headrest adjustment device according to claim 1, characterized in that, The first adjusting member (2) includes a reset part (22), which is used to abut against the check member (3) when the first adjusting member (2) is reset so that the check member (3) is reset.

11. The headrest adjustment device according to claim 1, characterized in that, The first adjustment mechanism further includes a first elastic element (51), and the anti-return element (3) is connected to the main body (1) through the first elastic element (51). When the first adjustment element (2) moves from the second gear position to the return position, the first elastic element (51) is in an elastic deformation state.

12. The headrest adjustment device according to claim 1, characterized in that, The first adjustment mechanism further includes a second elastic element (52). The first adjustment element (2) is connected to the main body (1) through the second elastic element (52). When the first adjustment element (2) moves from the first gear position to the second gear position, the second elastic element (52) is in an elastic deformation state.

13. The headrest adjustment device according to claim 1, characterized in that, The first adjusting member (2) is movably mounted on the main body member (1) along a first direction. ； The headrest adjustment device further includes a second adjustment mechanism, which includes a rod (6) and a second adjustment component (7). The main body (1) is movably mounted on the rod (6) along a second direction. The first direction and the second direction intersect. The second adjustment component (7) is used to adjust the position of the main body (1) on the rod (6).

14. The headrest adjustment device according to claim 13, characterized in that, The second adjustment component (7) includes a second locking member (71) which is movably mounted on the main body (1) to connect or disconnect the insert (6).

15. The headrest adjustment device according to claim 14, characterized in that, The insertion rod is provided with a plurality of slots (61) arranged along the second direction, and the second locking member (71) engages or disengages from the corresponding slots (61).

16. The headrest adjustment device according to claim 14, characterized in that, The second adjustment mechanism further includes a third elastic element (81), which is connected to the second locking element (71). When the second locking element (71) disengages from the insert (6), the third elastic element (81) is in an elastic deformation state.

17. The headrest adjustment device according to claim 14, characterized in that, The second adjustment component further includes an unlocking member (72), which is movably mounted on the main body (1) and is used to push against the second locking member (71) so that the second locking member (71) disengages from the insert (6).

18. The headrest adjustment device according to claim 17, characterized in that, The unlocking member (72) is movably installed on the main body (1) along a third direction, the third direction being opposite to the plane containing the first direction and the second direction; wherein, the unlocking member (72) is provided with a pushing slope (723), the pushing slope (723) being inclined relative to the first direction and the third direction, and used to push against the second locking member (71).

19. The headrest adjustment device according to claim 18, characterized in that, The second locking member (71) is bent to engage with the pushing slope (723).

20. The headrest adjustment device according to claim 18, characterized in that, The second adjustment mechanism further includes a fourth elastic element (82), which connects the unlocking element (72) and the main body (1). When the unlocking element (72) pushes against the second locking element (71), the fourth elastic element (82) is in an elastic deformation state.

21. The headrest adjustment device according to any one of claims 1-20, characterized in that, It also includes a third adjustment mechanism, which includes an ear piece connector (91) and two ear pieces (92, 93) located on opposite sides of the ear piece connector (91), each of the ear pieces (92, 93) being rotatably connected to the ear piece connector (91) to move away from or closer to the main body (1).

22. The headrest adjustment device according to claim 21, characterized in that, The ear piece connector (91) is snapped into the first adjusting member (2).

23. A headrest, characterized in that, The headrest includes the headrest adjustment device according to any one of claims 1-22.

24. A car seat, characterized in that, The car seat includes the headrest as described in claim 23.

25. A vehicle, characterized in that, The vehicle includes the car seat as described in claim 24.

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