Seat headrest adjusting structure

Abstract

The utility model relates to a seat headrest adjusting structure, and belongs to the technical field of seat structural design, the seat headrest adjusting structure comprises a rotating block mounted on the lower side of a headrest, the headrest comprises a supporting part for supporting the head and a connecting part connected with a seat, the connecting part is slidably connected with the rotating block, and the rotating block is connected with the supporting part. And a sliding assembly for adjusting the position of the rotating block on the connecting part is arranged on the connecting part. The method and the device have the effect of reducing adverse effects on user experience.

Description

Technical Field

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

[0002] Common headrests installed on seats are all equipped with adjustment structures to allow users to adjust the position of the headrest according to their personal comfort. Usually, when adjusting the distance between the headrest and the user, the headrest needs to be stretched to the farthest distance from the seat and then reset to achieve the headrest adjustment, which easily causes operational inconvenience and affects the user experience. Utility Model Content

[0003] In order to reduce the adverse impact on user experience, the present application provides a seat headrest adjustment structure.

[0004] The present application provides a seat headrest adjustment structure that adopts the following technical solution:

[0005] A seat headrest adjustment structure comprises a rotating block installed on the lower side of the headrest, the headrest comprises a supporting part for supporting the head and a connecting part connected to the seat, the connecting part is slidably connected to the rotating block, and a sliding component for adjusting the position of the rotating block on the connecting part is provided on the connecting part.

[0006] By adopting the above technical solution, the relative position of the rotating block on the connecting part is adjusted by the sliding assembly, so that the distance between the headrest and the user can be adjusted at any time along the width direction of the connecting part, thereby reducing the possibility that the user needs to pull the headrest to the farthest distance from the seat before moving the headrest closer to the seat, thereby reducing the adverse impact on user experience.

[0007] Optionally, the sliding assembly includes a moving block located at the upper end of the rotating block and fixedly connected to the rotating block by bolts, the connecting part is provided with a cavity, the moving block is inserted into the cavity, the lower side of the connecting part is provided with a waist-shaped hole adapted for the bolt, the bolt passes through the waist-shaped hole and is slidably connected to the connecting part, and the connecting part is provided with a fixing part for fixing the moving block.

[0008] By adopting the above technical solution, the driving connection part drives the supporting part to move towards or away from the user. At this time, the moving block slides relative to the connecting part, and the bolt slides in the waist-shaped hole. When the supporting part moves to a position comfortable for the user, the moving block and the connecting part are fixed by the fixing part, thereby improving the stability of the supporting part and reducing the adverse effects on the user experience.

[0009] Optionally, the fixing member includes a slider located in the cavity, one end of the slider passes through the side wall of the connecting part and is slidably connected to the connecting part, the sliding direction of the slider is perpendicular to the sliding direction of the moving block, and the lower side of the slider is fixedly connected with two first racks respectively located at the ends of the slider parallel to the length direction of the waist-shaped hole, and the upper side of the moving block is fixedly connected with a second rack facing the first rack and arranged along the length direction of the moving block, the first rack can be meshed with the second rack, and the connecting part is provided with a reset member for driving the slider to reset.

[0010] By adopting the above technical solution, the driving slider passes through one end of the connecting part and moves toward the inside of the connecting part until it completely enters the cavity, and the first rack and the second rack disengage, thereby facilitating the driving of the connecting part to drive the supporting part to slide in the length direction of the second rack, and the first rack moves relative to the second rack. When the supporting part moves to a position comfortable for the user, the slider is released. At this time, the reset member drives the slider to move until the end passes through the connecting part. At this time, one of the first racks is meshed with the second rack, thereby fixing the moving block and the connecting part, improving the stability of the supporting part, and the slider is located at one end of the connecting part, which is convenient for the user to adjust while sitting on the seat, reducing the possibility that the user needs to move to the back of the seat to adjust the headrest, thereby improving the convenience of adjusting the headrest.

[0011] Optionally, the reset member includes a spring which is away from the side where the slider passes through the connecting portion and has one end fixedly connected to the slider, and the other end of the spring abuts against the inner wall of the connecting portion.

[0012] By adopting the above technical solution, when the slider moves to completely enter the cavity, the spring is compressed. When the slider is released, the spring recovers its deformation and pushes the slider to reset, thereby facilitating the engagement of the first rack and the second rack, thereby improving the stability of the support part.

[0013] Optionally, a guide plate fixedly connected to the inner wall of the connecting portion is provided in the cavity, the guide plate passes through the slider and is slidably connected to the slider, and the sliding direction of the guide plate on the slider is parallel to the sliding direction of the slider.

[0014] By adopting the above technical solution, during the movement of the slider, the slider is slidably connected to the guide plate, thereby guiding the slider, reducing the possibility that the slider will deviate during the movement and have difficulty passing through the connection part, further reducing the adverse impact on user experience.

[0015] Optionally, a clamping block adapted to the rotating block is clamped on the upper side of the seat, the rotating block is plugged into the upper side of the clamping block, and plug-in shafts inserted into the rotating block and rotatably connected to the rotating block are plugged into both ends of the clamping block, and a limiting member for limiting the position of the headrest is provided on the plug-in shaft.

[0016] By adopting the above technical solution, the driving rotating block drives the headrest to rotate along the circumferential direction of the plug-in shaft. When the headrest is rotated to a position comfortable for the user, the relative position of the rotating block and the plug-in shaft is limited by the limiting member, thereby facilitating the adjustment of the angle of the headrest by the rotating block and the clamping block, thereby reducing the adverse effect on the user experience.

[0017] Optionally, the limiting member includes a limiting block fixedly connected to the plug-in shaft and arranged along the length direction of the plug-in shaft, the side of the limiting block away from the plug-in shaft is arranged in an arc shape, and a plurality of arc grooves corresponding to the limiting block and connected to each other are opened on the side wall of the rotating block, and the limiting block is inserted in one of the arc grooves.

[0018] By adopting the above technical solution, when the rotating block rotates, the limit block rotates relative to the rotating block. At this time, the limit block is slightly deformed, thereby disengaging from the inserted arc groove and being inserted into the next arc groove along the rotation direction. When the headrest is rotated to a position comfortable for the user, the limit block is inserted into the corresponding arc groove and limits the headrest, thereby improving the stability of the headrest and making it easier for the user to adjust the position of the headrest again, further reducing the adverse impact on user experience.

[0019] Optionally, a positioning block is fixedly connected to one end of the plug-in shaft away from the rotating block, and a positioning groove adapted to the positioning block is provided on the side wall of the clamping block. When the positioning block is plugged into the positioning groove, the limit block is aligned with one of the corresponding arc grooves.

[0020] By adopting the above technical solution, during the process of installing the plug-in shaft on the rotating block, after aligning the positioning block with the positioning groove, the plug-in shaft is driven to be inserted into the clamping block and the rotating block, thereby aligning the limit block with one of the corresponding arc grooves, thereby facilitating the installation of the plug-in shaft and improving the installation efficiency.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The relative position of the rotating block on the connecting part is adjusted by the sliding assembly, so that the distance between the headrest and the user can be adjusted at any time along the width direction of the connecting part, reducing the possibility that the user needs to pull the headrest to the farthest distance from the seat before moving the headrest closer to the seat, thereby reducing the adverse impact on user experience;

[0023] 2. The driving slider passes through one end of the connecting part and moves toward the inside of the connecting part until it completely enters the cavity, and the first rack and the second rack are disengaged, so that it is convenient to drive the connecting part to drive the support part to slide in the length direction of the second rack, and the first rack moves relative to the second rack. When the support part moves to a comfortable position for the user, the slider is released, and the reset member drives the slider to move until the end passes through the connecting part. At this time, one of the first racks is meshed with the second rack, so that the moving block and the connecting part are fixed, and the stability of the supporting part is improved. The slider is located at one end of the connecting part, which is convenient for the user to adjust while sitting on the seat, reducing the possibility that the user needs to move to the back of the seat to adjust the headrest, and improving the convenience of adjusting the headrest;

[0024] 3. When the rotating block rotates, the limit block rotates relative to the rotating block. At this time, the limit block is slightly deformed, thereby disengaging from the inserted arc groove and being inserted into the next arc groove along the rotation direction. When the headrest is rotated to a comfortable position for the user, the limit block is inserted into the corresponding arc groove and limits the headrest, thereby improving the stability of the headrest and making it easier for the user to adjust the position of the headrest again, further reducing the adverse impact on user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the seat headrest adjustment structure in the embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the exploded structure that reflects the positional relationship between the connecting portion and the clamping block in the embodiment of the present application.

[0027] Figure 3 It is a structural schematic diagram reflecting the position relationship between the connecting portion and the slider in the embodiment of the present application.

[0028] Figure 4 It is a schematic diagram of the exploded structure that reflects the positional relationship between the moving block and the clamping block in the embodiment of the present application.

[0029] Explanation of the reference numerals: 1. headrest; 11. supporting portion; 12. connecting portion; 121. cavity; 122. waist-shaped hole; 2. rotating block; 21. mounting hole; 22. arc-shaped groove; 3. sliding assembly; 31. moving block; 32. fixing member; 321. slider; 3211. guide hole; 322. fixing portion; 323. first rack; 324. second rack; 33. reset member; 331. fixing rod; 332. spring; 34. guide plate; 4. clamping block; 41. plug-in groove; 42. plug-in shaft; 43. through hole; 44. end cover; 45. positioning groove; 5. limiting member; 51. limiting block; 52. positioning block. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings.

[0031] The present application discloses a seat headrest adjustment structure. Figure 1 and Figure 2 The headrest 1 includes a support portion 11 for supporting the user's head and a connection portion 12 located on a side of the depression of the support portion 11, and one end of the connection portion 12 is fixedly connected to the middle of the support portion 11. A seat headrest adjustment structure includes a rotating block 2 located in the middle of the lower side of the connection portion 12 and slidably connected to the connection portion 12 along the width direction of the connection portion 12, and a sliding component 3 for adjusting the position of the rotating block 2 is provided on the connection portion 12. A clamping block 4 is clamped at the upper end of the seat, and a plug-in slot 41 is provided in the middle of the upper side of the clamping block 4, and the lower end of the rotating block 2 is plugged into the plug-in slot 41.

[0032] Reference Figure 2 , both ends of the upper side of the clamping block 4 are provided with a plug-in shaft 42 facing the rotating block 2, a through hole 43 adapted to the plug-in shaft 42 is provided on the clamping block 4, and a mounting hole 21 adapted to the plug-in shaft 42 and penetrating the rotating block 2 is provided on the rotating block 2, and the ends of the plug-in shaft 42 close to each other pass through the corresponding through hole 43 and are inserted into the mounting hole 21, and the ends of the plug-in shaft 42 inserted into the mounting hole 21 are provided with a stopper 5 for fixing the rotating block 2. At this time, the ends of the plug-in shaft 42 far from each other completely enter the through hole 43, and two end covers 44 are plugged into the clamping block 4 to block the ends of the through holes 43 respectively, and the ends of the end covers 44 close to each other are plugged into the corresponding ends of the plug-in shaft 42.

[0033] The driving rotating block 2 drives the headrest 1 to rotate along the circumferential direction of the plug-in shaft 42. When the headrest 1 is rotated to a comfortable position for the user, the relative position of the rotating block 2 and the plug-in shaft 42 is limited by the limiting member 5, so that the angle of the headrest 1 can be adjusted by the rotating block 2 and the clamping block 4, and the relative position of the rotating block 2 on the connecting part 12 can be adjusted by the sliding assembly 3, thereby adjusting the distance between the headrest 1 and the user.

[0034] Reference Figure 2 The stopper 5 includes two stoppers 51 symmetrically arranged on both sides of one end of the plug-in shaft 42 inserted into the mounting hole 21. The cross section of the side of the stoppers 51 away from each other is arranged to be an arc shape that gradually bulges from both ends to the middle in the direction away from each other. One side of the end of the rotating block 2 is provided with a plurality of arc grooves 22 that are connected to each other and to the mounting hole 21 and are adapted to one of the stoppers 51. The other side of the rotating block 2 is symmetrically provided with a plurality of arc grooves 22 that are connected to each other and to the mounting hole 21. The stopper 51 is inserted into one of the corresponding arc grooves 22.

[0035] Four positioning blocks 52 integrally formed with the plug shaft 42 are fixedly connected to the side wall of the end of the plug shaft 42 away from the mounting hole 21. The positioning blocks 52 are symmetrically arranged along the circumference of the plug shaft 42. Four positioning grooves 45 respectively adapted to the positioning blocks 52 and connected to the through hole 43 are opened at the end of the clamping block 4. When the positioning block 52 is inserted into the corresponding positioning groove 45, the limit block 51 is inserted into one of the corresponding arc grooves 22.

[0036] When the rotating block 2 rotates, the limit block 51 rotates relative to the rotating block 2. At this time, the limit block 51 is slightly deformed, thereby disengaging from the inserted arc groove 22 and being inserted into the next arc groove 22 along the rotation direction. When the headrest 1 is rotated to a position comfortable for the user, the limit block 51 is inserted into the corresponding arc groove 22 and limits the headrest 1, thereby improving the stability of the headrest 1 and making it easier for the user to adjust the position of the headrest 1 again.

[0037] During the process of installing the plug-in shaft 42 on the rotating block 2, after aligning the positioning block 52 with the positioning groove 45, the plug-in shaft 42 is driven to be inserted into the clamping block 4 and the rotating block 2, so as to align the limit block 51 with one of the corresponding arc grooves 22, thereby facilitating the installation of the plug-in shaft 42.

[0038] Reference Figure 2 and Figure 3 The sliding assembly 3 includes a moving block 31 located on the upper side of the rotating block 2 and fixedly connected to the rotating block 2 by bolts. A cavity 121 is provided in the connecting portion 12. The moving block 31 is located in the cavity 121 and is slidably connected to the connecting portion 12. A waist-shaped hole 122 is provided in the middle of the lower side of the connecting portion 12 along the width direction of the connecting portion 12. The bolt passes through the waist-shaped hole 122 and is slidably connected to the connecting portion 12. A fixing member 32 for fixing the moving block 31 is provided in the connecting portion 12.

[0039] Reference Figure 3 and Figure 4 The fixing member 32 includes a slider 321 located in the cavity 121 and arranged along the length direction of the connecting portion 12. One end of the slider 321 passes through the inner side wall and is slidably connected to the connecting portion 12 along the length direction of the connecting portion 12. A reset member 33 is provided at the end of the slider 321 away from the connecting portion 12. The slider 321 is located on the upper side of the moving block 31 and is slidably connected to the moving block 31. A fixing portion 322 integrally formed with the slider 321 and parallel to the length direction of the waist-shaped hole 122 is fixedly connected to the side of the slider 321 away from the supporting portion 11. Both ends of the fixing portion 322 away from the reset member 33 are fixedly connected to the first rack 323. A second rack 324 facing the reset member 33 is fixedly connected to the upper side of the moving block 31 and away from the reset member 33. The first rack 323 can mesh with the second rack 324.

[0040] The reset member 33 includes a fixed rod 331 fixedly connected to the end of the slider 321 away from the end passing through the connection portion 12, and a spring 332 is sleeved on the fixed rod 331. One end of the spring 332 sleeved on the fixed rod 331 is fixedly connected to the slider 321, and the other end abuts against the inner wall of the connection portion 12. When the spring 332 is at its original length, the end of the slider 321 away from the spring 332 passes through the connection portion 12.

[0041] A guide plate 34 is provided in the cavity 121, which is parallel to the height direction of the connecting part 12 and fixedly connected to the inner wall of the connecting part 12. The guide plate 34 is located on the side of the slider 321 away from the fixed part 322, and the slider 321 is provided with a guide hole 3211 arranged along the length direction of the slider 321. The upper end of the guide plate 34 passes through the guide hole 3211 and is slidably connected to the slider 321 along the length direction of the guide hole 3211.

[0042] The driving slider 321 passes through one end of the connecting part 12 and moves toward the inside of the connecting part 12 until it completely enters the cavity 121. The first rack 323 and the second rack 324 are disengaged, and the spring 332 is compressed, so that it is convenient to drive the connecting part 12 to drive the supporting part 11 to slide in the length direction of the second rack 324, and the first rack 323 moves relative to the second rack 324. When the supporting part 11 moves to a position comfortable for the user, the slider 321 is released. At this time, the spring 332 recovers its deformation and drives the slider 321 to move until the end passes through the connecting part 12. At this time, one of the first racks 323 is meshed with the second rack 324, completing the fixation of the moving block 31 and the connecting part 12.

[0043] During the movement of the slider 321 , the guide plate 34 slides in the guide hole 3211 , so that the slider 321 is guided by the guide plate 34 , thereby reducing the possibility that the slider 321 deviates during the movement and has difficulty passing through the connecting portion 12 .

[0044] The implementation principle of a seat headrest adjustment structure of an embodiment of the present application is as follows: the rotating block 2 is driven to rotate, and the limit block 51 rotates relative to the rotating block 2 and deforms slightly, thereby disengaging from the inserted arc groove 22 and being inserted into the next arc groove 22 along the rotation direction. When the headrest 1 is rotated to a comfortable position for the user, the limit block 51 is inserted into the corresponding arc groove 22 and limits the headrest 1. When the driving slider 321 completely enters the cavity 121, the first rack 323 and the second rack 324 are disengaged, and the spring 332 is compressed. The driving connection part 12 drives the support part 11 to slide in the length direction of the second rack 324. When the support part 11 moves to a comfortable position for the user, the slider 321 is released, the spring 332 recovers its deformation and drives the slider 321 to move until the end passes through the connecting part 12. At this time, one of the first racks 323 is meshed with the second rack 324, completing the fixation of the moving block 31 and the connecting part 12.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A seat headrest adjustment structure, characterized in that: The headrest (1) comprises a rotating block (2) mounted on the lower side of a headrest (1); the headrest (1) comprises a supporting portion (11) for supporting the head and a connecting portion (12) connected to the seat; the connecting portion (12) is slidably connected to the rotating block (2); and a sliding component (3) for adjusting the position of the rotating block (2) on the connecting portion (12) is provided on the connecting portion (12).

2. The seat headrest adjustment structure according to claim 1, characterized in that: The sliding assembly (3) comprises a moving block (31) located at the upper end of the rotating block (2) and fixedly connected to the rotating block (2) by means of bolts; the connecting portion (12) is provided with a cavity (121), the moving block (31) is inserted into the cavity (121), the lower side of the connecting portion (12) is provided with a waist-shaped hole (122) adapted to the bolt, the bolt passes through the waist-shaped hole (122) and is slidably connected to the connecting portion (12), and the connecting portion (12) is provided with a fixing member (32) for fixing the moving block (31).

3. The seat headrest adjustment structure according to claim 2, characterized in that: The fixing member (32) comprises a slider (321) located in the cavity (121); one end of the slider (321) passes through the side wall of the connecting portion (12) and is slidably connected to the connecting portion (12); the sliding direction of the slider (321) is perpendicular to the sliding direction of the moving block (31); the lower side of the slider (321) is fixedly connected to two first racks (323) respectively located at the ends of the slider (321) in the length direction parallel to the waist-shaped hole (122); the upper side of the moving block (31) is fixedly connected to a second rack (324) facing the first rack (323) and arranged along the length direction of the moving block (31); the first racks (323) can mesh with the second racks (324); and a reset member (33) for driving the slider (321) to reset is provided on the connecting portion (12).

4. The seat headrest adjustment structure according to claim 3, characterized in that: The reset member (33) comprises a spring (332) which passes through one side of the connecting portion (12) away from the sliding block (321) and has one end fixedly connected to the sliding block (321); the other end of the spring (332) abuts against the inner side wall of the connecting portion (12).

5. The seat headrest adjustment structure according to claim 4, characterized in that: A guide plate (34) fixedly connected to the inner wall of the connecting portion (12) is provided in the cavity (121); the guide plate (34) passes through the slider (321) and is slidably connected to the slider (321); the sliding direction of the guide plate (34) on the slider (321) is parallel to the sliding direction of the slider (321).

6. The seat headrest adjustment structure according to claim 1, characterized in that: A clamping block (4) adapted to the rotating block (2) is clamped on the upper side of the seat, the rotating block (2) is plugged into the upper side of the clamping block (4), both ends of the clamping block (4) are plugged with plugging shafts (42) inserted into the rotating block (2) and rotatably connected to the rotating block (2), and a limiting member (5) for limiting the position of the headrest (1) is provided on the plugging shaft (42).

7. The seat headrest adjustment structure according to claim 6, characterized in that: The limiting member (5) comprises a limiting block (51) fixedly connected to the plug-in shaft (42) and arranged along the length direction of the plug-in shaft (42); the side of the limiting block (51) away from the plug-in shaft (42) is arranged in an arc shape; a plurality of arc grooves (22) corresponding to the limiting block (51) and interconnected are formed on the side wall of the rotating block (2); the limiting block (51) is inserted into one of the arc grooves (22).

8. The seat headrest adjustment structure according to claim 7, characterized in that: A positioning block (52) is fixedly connected to one end of the plug-in shaft (42) away from the rotating block (2); a positioning groove (45) adapted to the positioning block (52) is provided on a side wall of the clamping block (4); when the positioning block (52) is plugged into the positioning groove (45), the limiting block (51) is aligned with a corresponding one of the arc-shaped grooves (22).

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