Automobile seat up-down rotating headrest structure and using method thereof

Abstract

The invention discloses an automobile seat up-down rotating headrest structure and a using method thereof, and relates to the technical field of automobile seat headrests, the automobile seat up-down rotating headrest structure comprises a headrest body and a lifting connecting plate, one side of the headrest body is connected with a rotating adjusting connecting block, and the side, away from the headrest body, of the rotating adjusting connecting block is connected with an adjusting connecting device; a rotary adjusting assembly is connected between the rotary adjusting connecting block and the adjusting connecting device; the seat headrest can freely move up and down and rotate, so that the headrest can be adjusted to a more comfortable position, the driving comfort is improved, the seat headrest can be rapidly reset when an automobile accident occurs, it is guaranteed that the headrest can be rapidly away from the cervical vertebra, the emergency reset structure is safe and rapid, and the safety of the automobile is improved. When the back cushion main body is normally adjusted, the emergency resetting structure cannot be driven to move, so that the subsequent emergency resetting action can be safely and stably carried out.

Description

Technical Field

[0001] The present application relates to the technical field of automotive seat headrests. More specifically, the present application relates to an up-and-down rotatable headrest structure for an automotive seat and a method of using the same. Background Art

[0002] An automotive headrest is a driving comfort configuration item and a safety protection item. When a vehicle is rear-ended, due to inertia, the human body will fall backward. At this time, the pressure of the vehicle accelerating or decelerating is concentrated on the vulnerable neck and head of the human body, and the headrest plays a buffering role to protect the human head.

[0003] In order to protect the safety of the vehicle owner, existing automotive headrests generally form a "C" shape with the vehicle seat, so that the driver's head closely adheres to the headrest, and there is no contact between the neck and the seat, thereby preventing the neck from being impacted in the event of a vehicle accident and affecting the life safety of the driver.

[0004] After retrieval, the existing patent publication number is CN114018561A, which discloses a development test device for an automotive seat headrest, including a headrest assembly respectively arranged on the top of an adjustment assembly. The adjustment assembly is arranged on a headrest rod assembly. The adjustment assembly includes a lead screw rotatably arranged on the top of the headrest rod assembly. A regulating block is fixed to the bottom of the headrest assembly. The regulating block is sleeved on the lead screw. The rotation of the lead screw can drive the headrest assembly to move relatively through the regulating block. By adjusting the rotation of the lead screw through a handle, the headrest assembly can be driven to move relatively through the regulating block, so as to realize reasonable front-back adjustment of the headrest for users of different body shapes, improve the comfort, practicability and safety of the user. The inventor found the following problems in the prior art during the implementation of the present application:

[0005] Existing automotive headrests cannot be quickly reset in the event of a car accident, which may affect the safety of the driver. Since many people will adjust the headrest to the neck position to act as a neck pillow for driving comfort, if the neck pillow cannot be reset in time in the event of a driving accident, the neck pillow or the headrest may cause an impact on the driver's cervical vertebrae and threaten the life safety of the driver.

[0006] Therefore, an up-and-down rotatable headrest structure for an automotive seat and a method of using the same are proposed to solve the above-mentioned related technical problems.

[0007] Application Content

[0008] In order to overcome the above-mentioned defects of the prior art, the present application provides an up-and-down rotatable headrest structure for an automotive seat and a method of using the same to solve the problems raised in the above background art.

[0009] To achieve the above object, the present application provides the following technical solution: An up-and-down rotating headrest structure for an automobile seat, comprising a headrest main body and a lifting connecting plate. A fitting air cushion is provided on one side of the headrest main body, and a rotating adjustment connecting block is connected to the side of the headrest main body away from the fitting air cushion. An adjustment connecting device is connected to the side of the rotating adjustment connecting block away from the headrest main body, and a rotation adjustment component is connected between the rotating adjustment connecting block and the adjustment connecting device;

[0010] Among them, the adjustment connecting device includes an upper shell and a lower shell. A connecting chute is provided between the upper shell and the lower shell, and the lifting connecting plate is inserted into the connecting chute. An up-and-down adjustment component is connected between the lifting connecting plate and the adjustment connecting device. An emergency electric lifting rod is connected to the side of the lifting connecting plate close to the adjustment connecting device. A lifting sleeve is sleeved on the outer side of the output shaft of the emergency electric lifting rod. A transmission sleeve is sleeved on the outer side of the lifting sleeve, and one side of the transmission sleeve is connected to the up-and-down adjustment component. A lifting push block that is mutually engaged with the transmission sleeve is provided at the bottom of the lifting sleeve.

[0011] Preferably, the fitting air cushion includes an elastic rubber pad and multiple groups of inflatable air bags. The elastic rubber pad is attached to the outer side of the headrest main body, and multiple groups of the inflatable air bags are arranged between the elastic rubber pad and the headrest main body. An electric air valve is connected to one side of the fitting air cushion, and the electric air valve is connected to multiple groups of inflatable air bags through pipelines. An electric air pump is provided on the side of the rotating adjustment connecting block close to the adjustment connecting device, and an air delivery pipe is connected between the electric air valve and the electric air pump.

[0012] Preferably, the upper shell and the lower shell are connected by bolts. A connecting convex block is provided on the side of the upper shell away from the lower shell, and the connecting convex block is mutually engaged with the rotating adjustment connecting block. The connecting convex block, the rotating adjustment connecting block and the rotation adjustment component form a hinge flipping structure.

[0013] Preferably, an adjustment and maintenance window is provided on the side of the lower shell away from the upper shell. An adjustment connecting groove is provided on the side of the upper shell close to the connecting convex block, and a spring connecting groove is provided in the adjustment connecting groove. The up-and-down adjustment component is arranged in the adjustment connecting groove, and a spring connecting convex block is provided on the side of the up-and-down adjustment component close to the spring connecting groove. A return spring is connected between the spring connecting convex block and the spring connecting groove.

[0014] Preferably, multiple groups of moving chutes are provided on the side of the lifting connecting plate away from the headrest main body, and a lifting adjustment groove is provided in the lifting connecting plate. Multiple groups of gear position card slots arranged in an array are provided on one side of the lifting adjustment groove. A limit card block that is mutually engaged with the gear position card slots is provided on the side of the up-and-down adjustment component close to the lifting adjustment groove.

[0015] Preferably, a telescopic gear plate is slidably connected inside the lifting sleeve. A moving push block is arranged on the output shaft of the emergency electric lifting rod. Both sides of the top end of the output shaft of the emergency electric lifting rod and both sides of the moving push block are slidably connected with telescopic connecting rods through rotating shafts. A limiting ring is arranged inside the lifting sleeve.

[0016] Preferably, a rotating sleeve is arranged at the connection between the rotation adjustment assembly and the rotation adjustment connection block. One side of the rotating sleeve is connected to the rotation adjustment connection block. An emergency reset gear is arranged on the side of the rotating sleeve away from the rotation adjustment connection block. A connection rotating shaft is inserted into the rotating sleeve.

[0017] Preferably, both ends of the connection rotating shaft are connected with adjustment knobs. Resistance adjustment blocks are arranged between the rotating sleeve and the two adjustment knobs. An adjustment spring is arranged between the adjustment knob and the resistance adjustment block. The adjustment spring is sleeved outside the connection rotating shaft. Transmission connection teeth are arranged at both ends of the rotating sleeve and on the side of the resistance adjustment block close to the rotating sleeve.

[0018] Preferably, a transmission gear set is connected inside the adjustment connection device. The transmission gear set includes a sliding gear and a driving gear. The sliding gear and the driving gear are connected by a rotating shaft. A connection bearing is connected to the rotating shaft of the transmission gear set. A spring is connected between the connection bearing and the inner wall of the adjustment connection device. The sliding gear meshes with the telescopic gear plate. A transmission connection groove is arranged on the side of the rotation adjustment connection block close to the lifting connection plate. The driving gear passes through the transmission connection groove and meshes with the emergency reset gear.

[0019] Preferably, a usage method of an up-and-down rotating headrest structure for an automobile seat, the usage method comprising the following steps:

[0020] Step 1: First, the headrest main body can slide up and down on the lifting connection plate. When sliding the headrest main body downward, pressing the headrest main body drives the adjustment connection device connected thereto to move. The up-and-down adjustment assembly is driven by the adjustment connection device to move downward along the direction of the lifting adjustment groove. During the movement, the up-and-down adjustment assembly will sequentially pass through multiple groups of gear position card slots. When adjusting to the appropriate gear position, releasing the headrest main body can complete the height adjustment of the headrest main body. At this time, the limit latch of the up-and-down adjustment assembly will be buckled in the corresponding gear position card slot;

[0021] Step 2: When the pillow body is slid upward, you only need to lift the pillow body, press the pillow body to drive the adjustment connection device connected to it to move, and the adjustment connection device drives the up and down adjustment components to move upward along the direction of the lifting adjustment slot, and when the appropriate gear is adjusted, release the pillow body to complete the height adjustment of the pillow body, and at this time, the limit card block of the up and down adjustment component will be buckled in the adjacent gear card slot;

[0022] Step 3: When adjusting the angle of the pillow body, the pillow body can be rotated and adjusted by pulling the pillow body, and the resistance of the pillow body can be adjusted by turning the adjustment knob. The pressure of the adjustment spring on the resistance adjustment block can be adjusted by turning the adjustment knob, thereby completing the adjustment of the pressure of the resistance adjustment block on the rotating sleeve. When the pillow body is used as a neck pillow, the electric air valve can be started, and the electric air valve can be used to fill gas into the inflatable airbag through the electric air valve, so that the fitting air cushion can fit the driver's neck more closely;

[0023] Step 4: When a collision occurs, the emergency electric lifting rod drives the lifting sleeve and the transmission sleeve connected to it to move up and down, and the transmission sleeve drives the upper and lower adjustment components and the adjustment connection device connected to it and the pillow body to complete the height reset during the movement. In the process of resetting the height, the telescopic gear plate is driven to extrude outward, and the transmission gear set is squeezed by the telescopic gear plate to engage with the emergency reset gear. In the process of rising, the telescopic gear plate drives the emergency reset gear and the pillow body connected to it to rotate and reset through the transmission gear set, so that the pillow body is reset to a safe position.

[0024] Technical effects and advantages of this application:

[0025] 1. Compared with the prior art, the headrest structure of the automobile seat that can rotate up and down and rotate and the use method thereof can freely move the seat pillow up and down and rotate, so that the headrest can be adjusted to a more comfortable position, thereby increasing driving comfort. The pillow body can be driven to move up and down by simple movements, and the reset locking movement can be quickly completed after the movement is completed, making the lifting and adjustment movement of the pillow seat more convenient. The sliding movement of the pillow body is limited by moving the slide groove, so that the pillow body can be lifted and lowered vertically smoothly. By setting multiple groups of gears, the use of more drivers with different heights and body shapes can be met, making the adjustment work more convenient. The flip adjustment structure is simple and can be manually flipped and adjusted. The adjustment resistance can be adjusted to the adjustment resistance suitable for the driver, thereby avoiding the difficulty in rotation due to excessive adjustment resistance, or the rotation of the pillow body during the pillow leaning process due to too small resistance.

[0026] 2. Compared with the prior art, the up-and-down rotating headrest structure of an automotive seat and its usage method can quickly reset the seat headrest in terms of height position and rotational angle position when an accident occurs in the vehicle, so as to ensure that the headrest can quickly move away from the cervical vertebra and perform a better protective action on the head and cervical vertebra part. Through the rapid reset work driven by the emergency electric lifting rod, the vehicle can be automatically and quickly adjusted when impacted, and the telescopic gear plate can be extended during the lifting and moving process. Moreover, due to the multi-stage lifting structure, no matter at what height gear position the up-and-down adjustment component is adjusted, it can always be reset when the emergency electric lifting rod extends and retracts to the maximum stroke position. It can reset the angular position of the backrest main body while ascending and resetting, so that the backrest main body can quickly be reset to a safe position.

[0027] 3. Compared with the prior art, for the up-and-down rotating headrest structure of an automotive seat and its usage method, the emergency reset structure is safe and fast. Through the movement of the gear set, the connection of the transmission structure is achieved, so that the backrest main body will not drive the emergency reset structure to move during normal adjustment, ensuring the safe and stable progress of subsequent emergency reset actions. During the process of the telescopic gear plate extending outwards, it squeezes the transmission gear set. The transmission gear set is inside the adjustment connection device and moves through the corresponding grooves or tracks set in the adjustment connection device and the springs connected by the connecting bearings, so that the driving gear of the transmission gear set can pass through the transmission connection groove and mesh with the emergency reset gear, thereby completing the connection work of the emergency reset structure. At this time, during the upward movement of the telescopic gear plate, it drives the sliding gear to rotate, and the sliding gear drives the driving gear to rotate through the rotating shaft, so as to drive the emergency reset gear and the backrest main body connected thereto to rotate and reset through the driving gear, so that the backrest main body is reset to a safe position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the main body of the present application;

[0029] Figure 2 is a schematic structural diagram of the back of the backrest main body of the present application;

[0030] Figure 3 is a schematic structural diagram of the adjustment connection device of the present application;

[0031] Figure 4 is a schematic structural diagram of the rotation adjustment component of the present application;

[0032] Figure 5 is a schematic cross-sectional view of the side of the rotation adjustment component of the present application;

[0033] Figure 6Schematic structural diagram of the cross-section at the adjustment connection device of the present application;

[0034] Figure 7 Schematic structural diagram of the back side at the lifting connection plate of the present application;

[0035] Figure 8 Schematic structural diagram at the up-and-down adjustment assembly of the present application;

[0036] Figure 9 Schematic structural diagram of the front side at the lifting connection plate of the present application;

[0037] Figure 10 Schematic structural diagram of the side cross-section at the emergency electric lifting rod of the present application.

[0038] Reference numerals are: 1, headrest main body; 11, fitting air cushion; 111, elastic rubber pad; 112, inflatable airbag; 12, electric air valve; 13, electric air pump; 2, rotating adjustment connection block; 21, transmission connection groove; 3, adjustment connection device; 31, upper shell; 311, connection sliding groove; 312, adjustment connection groove; 313, spring connection groove; 32, lower shell; 321, adjustment and maintenance window; 33, connection convex block; 34, transmission gear set; 341, sliding gear; 342, driving gear; 343, connection bearing; 4, lifting connection plate; 41, moving sliding groove; 42, lifting adjustment groove; 421, gear position card slot; 43, emergency electric lifting rod; 431, moving push block; 432, telescopic connecting rod; 44, lifting sleeve; 441, lifting push block; 442, telescopic gear plate; 443, limiting ring; 5, rotation adjustment assembly; 51, rotating sleeve; 511, emergency reset gear; 52, adjustment knob; 53, connection rotating shaft; 531, adjustment spring; 54, resistance adjustment block; 541, transmission connection tooth; 6, up-and-down adjustment assembly; 61, spring connection convex block; 62, reset spring; 63, transmission sleeve; 64, limiting block. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0040] As shown in the atta Figures 1 to 10A structure of an up-and-down rotatable headrest for an automobile seat as shown, comprising a headrest main body 1 and a lifting connecting plate 4. A fitting air cushion 11 is arranged on one side of the headrest main body 1, and a rotation adjustment connecting block 2 is connected to the side of the headrest main body 1 away from the fitting air cushion 11. An adjustment connecting device 3 is connected to the side of the rotation adjustment connecting block 2 away from the headrest main body 1, and a rotation adjustment component 5 is connected between the rotation adjustment connecting block 2 and the adjustment connecting device 3;

[0041] Among them, the adjustment connecting device 3 includes an upper shell 31 and a lower shell 32. A connecting chute 311 is arranged between the upper shell 31 and the lower shell 32, and the lifting connecting plate 4 is inserted into the connecting chute 311. An up-and-down adjustment component 6 is connected between the lifting connecting plate 4 and the adjustment connecting device 3. An emergency electric lifting rod 43 is connected to the side of the lifting connecting plate 4 close to the adjustment connecting device 3. A lifting sleeve 44 is sleeved on the outer side of the output shaft of the emergency electric lifting rod 43. A transmission sleeve 63 is sleeved on the outer side of the lifting sleeve 44, and one side of the transmission sleeve 63 is connected to the up-and-down adjustment component 6. A lifting push block 441 that is mutually engaged with the transmission sleeve 63 is arranged at the bottom of the lifting sleeve 44; The lifting connecting plate 4 is installed and connected to the seat. The headrest main body 1 is rotationally adjusted on the adjustment connecting device 3 through the rotation adjustment connecting block 2, and can be slid up and down on the lifting connecting plate 4 through the connecting chute 311 of the adjustment connecting device 3. Moreover, the magnitude of the rotational resistance between the rotation adjustment connecting block 2 and the adjustment connecting device 3 can be adjusted through the rotation adjustment component 5. The adjustment connecting device 3 slides on the lifting connecting plate 4 through the up-and-down adjustment component 6, and the emergency electric lifting rod 43 drives the headrest main body 1 to complete the reset work of the height and angular position during a traffic accident.

[0042] As a preferred embodiment, the fitting air cushion 11 includes an elastic rubber pad 111 and multiple groups of inflatable air bags 112. The elastic rubber pad 111 is attached to the outer side of the pillow body 1, and multiple groups of inflatable air bags 112 are arranged between the elastic rubber pad 111 and the pillow body 1. An electric air valve 12 is connected to one side of the fitting air cushion 11, and the electric air valve 12 is connected to multiple groups of inflatable air bags 112 through pipelines. An electric air pump 13 is arranged on one side of the rotation adjustment connection block 2 close to the adjustment connection device 3, and an air delivery pipe 121 is connected between the electric air valve 12 and the electric air pump 13; a flexible pressure sensor is arranged on the side of the inflatable air bag 112 close to the elastic rubber pad 111, and the opening and closing of the electric air pump 13 and the electric air valve 12 can be controlled through the control system according to the pressure data of the pressure sensor. The inflatable gas is sent into the electric air valve 12 by the electric air pump 13 through the air delivery pipe 121, and the electric air valve 12 inflates the inflatable air bag 112. Moreover, the electric air valve 12 inflates the corresponding inflatable air bag 112 according to the pressure detection data, and the elastic rubber pad 111 is propped up by the inflatable air bag 112, so that the elastic rubber pad 111 fits on the neck of the driver. The feedback of the electric air pump 13, the electric air valve 12 and the pressure sensor are all existing mature technologies, and will not be elaborated here.

[0043] As a preferred embodiment, the upper shell 31 and the lower shell 32 are connected by bolts. A connecting convex block 33 is arranged on the side of the upper shell 31 away from the lower shell 32, and the connecting convex block 33 is mutually embedded with the rotation adjustment connection block 2. The connecting convex block 33, the rotation adjustment connection block 2 and the rotation adjustment assembly 5 form a hinge flipping structure; the adjustment connection device 3 can be installed or disassembled on the lifting connection plate 4 through the upper shell 31 and the lower shell 32. The pillow body 1 performs flipping adjustment work through the hinge flipping structure formed by the connecting convex block 33, the rotation adjustment connection block 2 and the rotation adjustment assembly 5. The installation and disassembly are relatively simple, which is convenient for subsequent maintenance and replacement work. The flipping adjustment structure is simple and can be manually flipped and adjusted.

[0044] As a preferred embodiment, an adjustment and maintenance window 321 is provided on the side of the lower shell 32 away from the upper shell 31, an adjustment connection groove 312 is provided on the side of the upper shell 31 close to the connection bump 33, and a spring connection groove 313 is provided in the adjustment connection groove 312. The up-and-down adjustment assembly 6 is arranged in the adjustment connection groove 312, and a spring connection bump 61 is provided on the side of the up-and-down adjustment assembly 6 close to the spring connection groove 313. A return spring 62 is connected between the spring connection bump 61 and the spring connection groove 313; during the movement of the adjustment connection device 3, the up-and-down adjustment assembly 6 is squeezed to move offset through the adjustment connection groove 312. During the movement of the up-and-down adjustment assembly 6, the return spring 62 is squeezed by the spring connection bump 61 to move in the direction of the spring connection groove 313, and after releasing the headrest main body 1, the up-and-down adjustment assembly 6 can be driven by the return spring 62 to rebound to the initial position relative to the adjustment connection device 3, and the headrest main body 1 can be driven to move up and down through a simple action, and the reset locking action can be quickly completed after the movement is completed, making the up-and-down adjustment movement of the headrest seat more convenient.

[0045] As a preferred embodiment, a plurality of moving chutes 41 are provided on the side of the lifting connection plate 4 away from the headrest main body 1, a lifting adjustment groove 42 is provided in the lifting connection plate 4, and a plurality of gear slots 421 arranged in an array are provided on one side of the lifting adjustment groove 42. A limiting block 64 that is mutually engaged with the gear slots 421 is provided on the side of the up-and-down adjustment assembly 6 close to the lifting adjustment groove 42; when the up-and-down adjustment assembly 6 fails, maintenance work can be carried out through the adjustment and maintenance window 321 of the lower shell 32. A convex block assembly that is mutually engaged with the moving chutes 41 on the lifting connection plate 4 is provided in the connection chute 311, and the headrest main body 1 moves along the direction of the moving chutes 41 on the lifting connection plate 4. The up-and-down adjustment assembly 6 slides in the lifting adjustment groove 42, and when the up-and-down adjustment assembly 6 stops moving, it is located at the adjacent gear slots 421. The lifting adjustment groove 42 is divided into multiple height gears through the gear slots 421, and the sliding action of the headrest main body 1 is limited through the moving chutes 41, so that the headrest main body 1 can smoothly perform vertical lifting work. By setting a plurality of gears, the use of more drivers with different heights and body shapes can be satisfied, making the adjustment work more convenient;

[0046] As a preferred embodiment, a telescopic gear plate 442 is slidably connected inside the lifting sleeve 44. A moving push block 431 is provided on the output shaft of the emergency electric lifting rod 43. Both sides of the top of the output shaft of the emergency electric lifting rod 43 and both sides of the moving push block 431 are slidably connected to the telescopic gear plate 442 through rotating shafts by telescopic connecting rods 432. A limiting ring 443 is provided inside the lifting sleeve 44; the up-and-down adjusting assembly 6 is fixed in the height gear formed by the lifting adjusting groove 42 and the gear position card slot 421 through a limiting block 64. When the up-and-down adjusting assembly 6 is damaged, the limiting block 64 can be manually toggled to move at the adjustment and maintenance window 321. The specific adjustment work and principle of the up-and-down adjusting assembly 6 are relatively mature existing technologies. When the vehicle collides, a signal is sent by the vehicle's own sensing device to drive the emergency electric lifting rod 43 to perform lifting work. The accident collision sensor on the vehicle is an infrastructure of the vehicle, and its specific feedback control principle is a mature existing technology, which can refer to the operation of the airbag. The emergency electric lifting rod 43 drives the lifting sleeve 44 to perform lifting movement, and drives the transmission sleeve 63 and the connected up-and-down adjusting assembly 6 to perform a height reset action through the lifting sleeve 44, so that the height adjustment work of the headrest main body 1 can still be carried out when the up-and-down adjusting assembly 6 is damaged, so as to be used temporarily when damaged. Through the quick reset work driven by the emergency electric lifting rod 43, the vehicle can be automatically and quickly adjusted when it is impacted; the output shaft of the emergency electric lifting rod 43 drives the moving push block 431 to perform lifting and telescopic movement during the lifting movement. During the lifting movement of the moving push block 431 and the output shaft of the emergency electric lifting rod 43, the telescopic gear plate 442 is driven to extend out of the lifting sleeve 44 through the telescopic connecting rod 432. The sliding and pushing action of the telescopic connecting rod 432 here is a mature existing technology and will not be elaborated here. When the moving push block 431 moves to the limiting ring 443, the moving action inside the lifting sleeve 44 stops, and at this time the telescopic gear plate 442 completes the extending action. The output shaft of the emergency electric lifting rod 43 pushes the lifting sleeve 44 to perform lifting action through the moving push block 431. When the lifting sleeve 44 moves to the lifting push block 441 and is engaged with the transmission sleeve 63, the lifting sleeve 44 pushes the transmission sleeve 63 to perform lifting movement through the lifting push block 441, thereby driving the reset action of the up-and-down adjusting assembly 6. The extending action of the telescopic gear plate 442 can be completed during the lifting movement, and through the multi-stage lifting structure, no matter what height gear position the up-and-down adjusting assembly is adjusted to, the reset can always be completed when the emergency electric lifting rod 43 extends and retracts to the maximum stroke position. Here, optionally, the maximum height of the telescopic extension of the emergency electric lifting rod 43 can be set to facilitate the safety protection work for people of different heights and body shapes.

[0047] As a preferred embodiment, a rotating sleeve 51 is provided at the connection between the rotating adjustment assembly 5 and the rotating adjustment connecting block 2. One side of the rotating sleeve 51 is connected to the rotating adjustment connecting block 2, and an emergency reset gear 511 is provided on the side of the rotating sleeve 51 away from the rotating adjustment connecting block 2. A connecting rotating shaft 53 is inserted into the rotating sleeve 51. The rotating adjustment connecting block 2 completes the rotating movement on the adjustment connecting device 3 through the rotating sleeve 51 of the rotating adjustment assembly 5. In case of an accident, it can be rotated and reset through the emergency reset gear 511. For the safety of the driver and the comfort of the ergonomic sitting posture, the rotation range of the headrest main body 1 is within 1 / 3 of the circumference, while the emergency reset gear 511 occupies a length of 2 / 5 of the circumference. Thus, no matter which angle the headrest main body 1 is adjusted to, the emergency reset gear 511 can reset the headrest main body 1 to a safe position, ensuring that no matter which angle the headrest main body 1 is adjusted to, the emergency reset gear can reset the headrest main body 1 to a safe position (i.e., the angle position where the headrest main body 1 and the seat form a C shape).

[0048] As a preferred embodiment, both ends of the connecting rotating shaft 53 are connected with adjustment knobs 52. Resistance adjustment blocks 54 are provided between the rotating sleeve 51 and the two groups of adjustment knobs 52. An adjustment spring 531 is provided between the adjustment knob 52 and the resistance adjustment block 54, and the adjustment spring 531 is sleeved on the outside of the connecting rotating shaft 53. Transmission connecting teeth 541 are provided at both ends of the rotating sleeve 51 and on the resistance adjustment block 54 close to the rotating sleeve 51. The resistance size of the adjustment of the headrest main body 1 can be adjusted by rotating the adjustment knob 52. By rotating the adjustment knob 52, the pressure of the adjustment spring 531 on the resistance adjustment block 54 is adjusted, and further the pressure of the transmission connecting teeth 541 on the resistance adjustment block 54 on the transmission connecting teeth 541 on the rotating sleeve 51 is adjusted. By adjusting the resistance, the adjustment resistance suitable for the driver is adjusted, so as to avoid difficult rotation due to too large adjustment resistance or rotation of the headrest main body 1 during the leaning process due to too small resistance.

[0049] As a preferred embodiment, a transmission gear set 34 is connected inside the adjustment connection device 3. The transmission gear set 34 includes a sliding gear 341 and a driving gear 342. The sliding gear 341 and the driving gear 342 are connected by a rotating shaft. A connecting bearing 343 is connected to the rotating shaft of the transmission gear set 34. A spring is connected between the connecting bearing 343 and the inner wall of the adjustment connection device 3. The sliding gear 341 meshes with the telescopic gear plate 442. A transmission connection groove 21 is provided on one side of the rotating adjustment connection block 2 close to the lifting connection plate 4. The driving gear 342 passes through the transmission connection groove 21 and meshes with the emergency reset gear 511. During the process of the telescopic gear plate 442 extending outwards, it squeezes the transmission gear set 34. The transmission gear set 34 is inside the adjustment connection device 3 and moves through the corresponding grooves or tracks provided inside the adjustment connection device 3 and the spring connected to the connecting bearing 343, so that the driving gear 342 of the transmission gear set 34 can pass through the transmission connection groove 21 and mesh with the emergency reset gear 511 (the top structures of the teeth of all the gears here are trapezoidal, which is convenient for meshing by extrusion and rotation during the movement process), thus completing the connection work of the emergency reset structure. At this time, during the upward movement of the telescopic gear plate 442, it drives the sliding gear 341 to rotate, and the sliding gear 341 drives the driving gear 342 to rotate through the rotating shaft, so as to drive the emergency reset gear 511 and the headrest main body 1 connected thereto to rotate and reset, so that the headrest main body 1 is reset to a safe position, and the angular position of the headrest main body 1 can be reset while rising and resetting, so that the headrest main body 1 can quickly be reset to a safe position, and the connection of the transmission structure is achieved through the movement of the gear set, so that the headrest main body 1 will not drive the emergency reset structure to move during normal adjustment, ensuring the safe and stable progress of the subsequent emergency reset action.

[0050] As a preferred embodiment, a method of using an up-and-down rotating headrest structure for an automobile seat, the method of use includes the following steps:

[0051] Step 1: First, the headrest main body 1 can slide up and down on the lifting connection plate 4. When sliding the headrest main body 1 downwards, pressing the headrest main body 1 drives the adjustment connection device 3 connected thereto to move, and the adjustment connection device 3 drives the up-and-down adjustment assembly 6 to move downwards along the direction of the lifting adjustment groove 42. During the movement process, the up-and-down adjustment assembly 6 will successively pass through multiple groups of gear position clamping grooves 421. When adjusting to the appropriate gear position, releasing the headrest main body 1 can complete the height adjustment of the headrest main body 1. At this time, the limit clamping block 64 of the up-and-down adjustment assembly 6 will be clamped in the corresponding gear position clamping groove 421.

[0052] Step 2: When sliding the headrest main body 1 upward, only need to lift the headrest main body 1 at this time. By pressing the headrest main body 1, drive the adjustment connection device 3 connected thereto to move, and drive the up and down adjustment assembly 6 to move upward along the direction of the lifting adjustment groove 42 by the adjustment connection device 3. When adjusted to the appropriate gear, release the headrest main body 1 to complete the height adjustment of the headrest main body 1. And at this time, the limit block 64 of the up and down adjustment assembly 6 will be buckled in the adjacent gear slot 421;

[0053] Step 3: When adjusting the angle of the headrest main body 1, the headrest main body 1 can be rotated and adjusted by pulling it. And the resistance size of the adjustment of the headrest main body 1 can be adjusted by rotating the adjustment knob 52. By rotating the adjustment knob 52, adjust the pressure of the adjustment spring 531 on the resistance adjustment block 54, and then complete the adjustment of the pressure of the resistance adjustment block 54 on the rotating sleeve 51. And when the headrest main body 1 is used as a neck pillow, the electric air valve 12 can be started, and the electric air valve 12 fills the inflatable airbag 112 with gas through the electric air valve 12, so that the fitting air cushion 11 can fit more closely to the neck of the driver;

[0054] Step 4: In the event of a collision accident, the emergency electric lifting rod 43 drives the lifting sleeve 44 and the transmission sleeve 63 connected thereto to move up and down. And during the movement of the transmission sleeve 63, drive the up and down adjustment assembly 6 and the adjustment connection device 3 and the headrest main body 1 connected thereto to complete the height reset. And during the height reset process, drive the telescopic gear plate 442 to extrude outward, and the telescopic gear plate 442 squeezes the transmission gear set 34 to mesh with the emergency reset gear 511. And during the upward movement of the telescopic gear plate 442, drive the emergency reset gear 511 and the headrest main body 1 connected thereto to rotate and reset through the transmission gear set 34, so that the headrest main body 1 is reset to a safe position.

[0055] The working process of the present application is as follows: When sliding the headrest main body 1 downward, drive the adjustment connection device 3 connected thereto to move by pressing the headrest main body 1, and drive the up and down adjustment assembly 6 to move downward along the direction of the lifting adjustment groove 42 by the adjustment connection device 3. And during the movement, the up and down adjustment assembly 6 will pass through multiple groups of gear slots 421 in sequence. When adjusted to the appropriate gear, release the headrest main body 1 to complete the height adjustment of the headrest main body 1. And at this time, the limit block 64 of the up and down adjustment assembly 6 will be buckled in the corresponding gear slot 421;

[0056] When the pillow body 1 is slid upward, it is only necessary to lift the pillow body 1, and the adjustment connection device 3 connected thereto is driven to move by pressing the pillow body 1, and the adjustment connection device 3 drives the up-down adjustment assembly 6 to move upward along the direction of the lifting adjustment slot 42, and when it is adjusted to a suitable gear, the pillow body 1 is released to complete the height adjustment of the pillow body 1, and at this time, the limit block 64 of the up-down adjustment assembly 6 will be buckled in the adjacent gear slot 421, and the adjustment connection device 3 squeezes the up-down adjustment assembly 6 through the adjustment connection slot 312 during the movement to offset and move, and the up-down adjustment assembly 6 squeezes the return spring 62 through the spring connection protrusion 61 to move in the direction of the spring connection slot 313 during the movement, and after the pillow body 1 is released, the return spring 62 can drive the up-down adjustment assembly 6 to rebound to the initial position relative to the adjustment connection device 3;

[0057] When the angle of the pillow body 1 is adjusted, the pillow body 1 can be rotated and adjusted by pulling the pillow body 1, and the resistance of the pillow body 1 can be adjusted by rotating the adjusting knob 52. The pressure of the adjusting spring 531 on the resistance adjusting block 54 is adjusted by rotating the adjusting knob 52, and then the pressure of the transmission connecting tooth 541 on the resistance adjusting block 54 on the transmission connecting tooth 541 on the rotating sleeve 51 is adjusted. After the pillow position is adjusted, the opening and closing of the electric air pump 13 and the electric air valve 12 are controlled by the control system according to the pressure data of the pressure sensor, and the electric air pump 13 delivers the inflation gas into the electric air valve 12 through the air delivery pipe 121, and the electric air valve 12 inflates the inflatable airbag 112, and the electric air valve 12 inflates the corresponding inflatable airbag 112 according to the pressure detection data, and the elastic rubber pad 111 is propped up by the inflatable airbag 112, so that the elastic rubber pad 111 fits the driver's neck;

[0058] In the event of a collision accident, a signal is sent through the vehicle's own sensing device to drive the emergency electric lifting rod 43 to perform lifting work. The output shaft of the emergency electric lifting rod 43 drives the moving push block 431 to perform lifting and telescopic movement during the lifting movement. The moving push block 431 and the output shaft of the emergency electric lifting rod 43 drive the telescopic gear plate 442 to extend out of the lifting sleeve 44 through the telescopic connecting rod 432 during the lifting movement. When the moving push block 431 moves to the limit ring 443, the moving action in the lifting sleeve 44 stops, and at this time, the telescopic gear plate 442 completes the extending action. The output shaft of the emergency electric lifting rod 43 pushes the lifting sleeve 44 to perform a lifting action through the moving push block 431. When the lifting sleeve 44 moves to the position where the lifting push block 441 is engaged with the transmission sleeve 63, the lifting sleeve 44 pushes the transmission sleeve 63 to perform a lifting movement through the lifting push block 441, thereby driving the reset action of the up and down adjustment assembly 6. During the process of extending outwards, the telescopic gear plate 442 presses the transmission gear set 34. The transmission gear set 34 moves within the adjustment connection device 3 through the corresponding slots or tracks provided in the adjustment connection device 3 and the springs connected by the connection bearings 343, so that the driving gear 342 of the transmission gear set 34 can pass through the transmission connection slot 21 and mesh with the emergency reset gear 511, thereby completing the connection work of the emergency reset structure. At this time, the telescopic gear plate 442 drives the sliding gear 341 to rotate during the upward movement, and the sliding gear 341 drives the driving gear 342 to rotate through the rotating shaft, so as to drive the emergency reset gear 511 and the headrest main body 1 connected thereto to rotate and reset through the driving gear 342, so that the headrest main body 1 is reset to a safe position.

[0059] Finally, the above are only the preferred embodiments of the present application and are not used to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A headrest structure for a car seat that can be rotated up and down, comprising a headrest body (1) and a lifting connecting plate (4), characterized in that: A fitting air cushion (11) is provided on one side of the pillow body (1), and a rotation adjustment connection block (2) is connected to the side of the pillow body (1) away from the fitting air cushion (11), and an adjustment connection device (3) is connected to the side of the rotation adjustment connection block (2) away from the pillow body (1), and a rotation adjustment component (5) is connected between the rotation adjustment connection block (2) and the adjustment connection device (3); The adjusting connection device (3) comprises an upper shell (31) and a lower shell (32), a connecting groove (311) is provided between the upper shell (31) and the lower shell (32), and the lifting connection plate (4) is inserted into the connecting groove (311), an up-down adjusting assembly (6) is connected between the lifting connection plate (4) and the adjusting connection device (3), an emergency electric lifting rod (43) is connected to the side of the lifting connection plate (4) close to the adjusting connection device (3), a lifting sleeve (44) is sleeved on the outer side of the output shaft of the emergency electric lifting rod (43), a transmission sleeve (63) is sleeved on the outer side of the lifting sleeve (44), and one side of the transmission sleeve (63) is connected to the up-down adjusting assembly (6), and a lifting push block (441) which is mutually engaged with the transmission sleeve (63) is provided at the bottom of the lifting sleeve (44).

2. The vehicle seat headrest structure capable of rotating up and down according to claim 1, characterized in that: The fitting air cushion (11) comprises an elastic rubber pad (111) and a plurality of groups of inflatable air bags (112), wherein the elastic rubber pad (111) is fitted to the outer side of the pillow body (1), and the plurality of groups of inflatable air bags (112) are arranged between the elastic rubber pad (111) and the pillow body (1), one side of the fitting air cushion (11) is connected to an electric air valve (12), and the electric air valve (12) and the plurality of groups of inflatable air bags (112) are connected via pipelines, an electric air pump (13) is arranged on the side of the rotating adjustment connection block (2) close to the adjustment connection device (3), and an air supply pipe (121) is connected between the electric air valve (12) and the electric air pump (13).

3. The vehicle seat vertically rotating headrest structure according to claim 1, characterized in that: The upper shell (31) and the lower shell (32) are connected by bolts. A connecting protrusion (33) is provided on a side of the upper shell (31) away from the lower shell (32). The connecting protrusion (33) and the rotation adjustment connecting block (2) are interlocked. The connecting protrusion (33), the rotation adjustment connecting block (2) and the rotation adjustment assembly (5) constitute a hinge turning structure.

4. The vehicle seat vertically rotating headrest structure according to claim 3, characterized in that: An adjustment maintenance window (321) is provided on a side of the lower shell (32) away from the upper shell (31); an adjustment connection groove (312) is provided on a side of the upper shell (31) close to the connection protrusion (33); a spring connection groove (313) is provided in the adjustment connection groove (312); the upper and lower adjustment components (6) are arranged in the adjustment connection groove (312); a spring connection protrusion (61) is provided on a side of the upper and lower adjustment components (6) close to the spring connection groove (313); a return spring (62) is connected between the spring connection protrusion (61) and the spring connection groove (313).

5. The vehicle seat vertically rotating headrest structure according to claim 1, characterized in that: A plurality of movable slide grooves (41) are arranged on a side of the lifting connection plate (4) away from the pillow body (1), and a lifting adjustment groove (42) is arranged inside the lifting connection plate (4), and a plurality of array-arranged gear slots (421) are arranged on one side of the lifting adjustment groove (42), and a limit block (64) that is mutually engaged with the gear slot (421) is arranged on a side of the up and down adjustment component (6) close to the lifting adjustment groove (42).

6. The vehicle seat vertically rotating headrest structure according to claim 1, characterized in that: A telescopic gear plate (442) is slidably connected inside the lifting sleeve (44), a movable push block (431) is arranged on the output shaft of the emergency electric lifting rod (43), and telescopic connecting rods (432) are slidably connected between the top sides of the output shaft of the emergency electric lifting rod (43) and the two sides of the movable push block (431) and the telescopic gear plate (442) via a rotating shaft, and a limiting circular ring (443) is arranged on the inner side of the lifting sleeve (44).

7. The vehicle seat vertically rotating headrest structure according to claim 6, characterized in that: A rotating sleeve (51) is provided at the connection between the rotating adjustment component (5) and the rotating adjustment connecting block (2); one side of the rotating sleeve (51) is connected to the rotating adjustment connecting block (2); an emergency reset gear (511) is provided on the side of the rotating sleeve (51) away from the rotating adjustment connecting block (2); and a connecting shaft (53) is inserted into the rotating sleeve (51).

8. The vehicle seat vertically rotating headrest structure according to claim 7, characterized in that: Both ends of the connecting shaft (53) are connected with adjusting knobs (52); resistance adjusting blocks (54) are arranged between the rotating sleeve (51) and the two groups of adjusting knobs (52); an adjusting spring (531) is arranged between the adjusting knobs (52) and the resistance adjusting block (54); and the adjusting spring (531) is sleeved on the outside of the connecting shaft (53); and transmission connecting teeth (541) are arranged at both ends of the rotating sleeve (51) and the resistance adjusting block (54) near the rotating sleeve (51).

9. The vehicle seat vertically rotating headrest structure according to claim 8, characterized in that: The adjusting connection device (3) is connected with a transmission gear set (34), and the transmission gear set (34) comprises a sliding gear (341) and a driving gear (342), and the sliding gear (341) and the driving gear (342) are connected via a rotating shaft, a connecting bearing (343) is connected to the rotating shaft of the transmission gear set (34), and a spring is connected between the connecting bearing (343) and the inner wall of the adjusting connection device (3), the sliding gear (341) and the telescopic gear plate (442) are meshed with each other, and a transmission connection groove (21) is provided on one side of the rotating adjusting connection block (2) close to the lifting connection plate (4), and the driving gear (342) passes through the transmission connection groove (21) and is meshed with the emergency reset gear (511).

10. A method for using a headrest structure for a car seat that can be rotated up and down, using the headrest structure for a car seat that can be rotated up and down according to any one of claims 1 to 9, characterized in that: The method of use comprises the following steps: Step 1: First, the pillow body (1) can slide up and down on the lifting connection plate (4). When the pillow body (1) is slid downward, the adjustment connection device (3) connected to it is driven to move by pressing the pillow body (1), and the adjustment connection device (3) drives the up and down adjustment component (6) to move downward along the direction of the lifting adjustment slot (42). In the process of movement, the up and down adjustment component (6) will pass through a plurality of gear slots (421) in sequence. When the appropriate gear is adjusted, the pillow body (1) is released to complete the height adjustment of the pillow body (1), and at this time, the limit block (64) of the up and down adjustment component (6) will be buckled in the corresponding gear slot (421); Step 2: When the pillow body (1) is slid upward, it is only necessary to lift the pillow body (1), and by pressing the pillow body (1) the adjustment connection device (3) connected thereto is driven to move, and the adjustment connection device (3) drives the up-down adjustment assembly (6) to move upward along the direction of the lifting adjustment slot (42), and when the pillow body (1) is adjusted to a suitable gear, the height adjustment of the pillow body (1) is completed by releasing the pillow body (1), and at this time the limit block (64) of the up-down adjustment assembly (6) will be locked in the adjacent gear slot (421); Step 3: When adjusting the angle of the pillow body (1), the pillow body (1) can be rotated and adjusted by pulling the pillow body (1), and the resistance of the pillow body (1) can be adjusted by rotating the adjustment knob (52). The pressure of the adjustment spring (531) on the resistance adjustment block (54) is adjusted by rotating the adjustment knob (52), thereby completing the adjustment of the pressure of the resistance adjustment block (54) on the rotating sleeve (51). When the pillow body (1) is used as a neck pillow, the electric air valve (12) can be started, and the electric air valve (12) is used to fill gas into the inflatable airbag (112) through the electric air valve (12), so that the fitting air cushion (11) can be more fitted to the driver's neck; Step 4: When a collision occurs, the emergency electric lifting rod (43) drives the lifting sleeve (44) and the transmission sleeve (63) connected thereto to move up and down, and the transmission sleeve (63) drives the up and down adjustment assembly (6) and the adjustment connection device (3) connected thereto and the pillow body (1) to complete the height reset during the movement. In the process of resetting the height, the telescopic gear plate (442) is driven to extrude outward, and the transmission gear set (34) is squeezed through the telescopic gear plate (442) to mesh with the emergency reset gear (511). In the process of rising and moving, the telescopic gear plate (442) drives the emergency reset gear (511) and the pillow body (1) connected thereto to rotate and reset through the transmission gear set (34), so that the pillow body (1) is reset to a safe position.

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