Two-stage locking car headrest with damping and car seat

Abstract

The utility model provides a two -stop locking car headrest with damping and car seat relates to the technical field of car seat equipment. Two -stop locking car headrest with damping includes installation base, rotary support axle, locking assembly, lock body subassembly and damping assembly, the rotary support axle rotatable is inserted on the installation base, the lock body subassembly fixedly is sleeved on the rotary support axle, the lock body subassembly has the toppling locking pin shaft and vertical locking pin shaft with the interlocking of locking assembly, the installation base is fixedly provided with the unlocking support axle, the locking assembly rotatable is sleeved on the unlocking support axle, and the unlocking support axle is provided with the reset elastic member for locking assembly reset, the installation base is fixedly provided with the spacing support axle that can butt joint with the lock body subassembly, the rotary damper of damping assembly sets up on the headrest framework, and the rotary gear sets up on the rotary support axle. The technical effect that can lock without shaking when the seat headrest is laid down is reached.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat equipment technology, specifically to a damped two-position locking automotive headrest and automotive seat. Background Technology

[0002] With the development of automotive technology, users have increasingly higher requirements for in-vehicle functions and the utilization rate of in-vehicle space. Furthermore, with the rapid development of new energy vehicles, users are becoming more and more stringent about the noise and rattles inside the vehicle and have higher and higher requirements for ease of operation.

[0003] Currently, folding headrests on the market are usually single-locking structures, with a locking function only when the headrest is upright. There is no locking function when the headrest is folded up. When using it, the headrest needs to be manually uprighted in the folded position, which is very inconvenient and often requires the person to turn around to operate it, thus reducing the passenger's user experience.

[0004] Currently, when the single-lock headrest is in the folded position, it will shake up and down on bumpy roads because it is not locked in place. In severe cases, it will cause abnormal noises, resulting in a poor passenger experience. Utility Model Content

[0005] The purpose of this invention is to provide a car headrest and car seat with a damped two-position locking mechanism, so as to alleviate the technical problem of shaking caused by the lack of locking when the headrest is folded down in the prior art.

[0006] In a first aspect, this utility model provides a two-position locking car headrest with damping, including a mounting base, a rotating support shaft, a locking assembly, a lock body assembly, and a damping assembly; The mounting base is fixedly mounted on the headrest frame, and the rotating support shaft is rotatably inserted into the mounting base. Headrest rods are provided at both ends of the rotating support shaft. The lock body assembly is fixedly sleeved on the rotating support shaft, and a first reset torsion spring is loosely sleeved on the rotating support shaft. One end of the first reset torsion spring is connected to the mounting base, and the other end is connected to the lock body assembly. The lock body assembly has a tilting lock stop pin and a vertical lock stop pin that engage with the locking assembly; An unlocking support shaft is fixedly provided on the mounting base, and the locking component is rotatably sleeved on the unlocking support shaft. A reset spring is provided on the unlocking support shaft for resetting the locking component. The mounting base is fixedly provided with a limiting support shaft that can abut against the lock body assembly; The damping assembly includes a rotary damper and a rotary gear. The rotary damper is mounted on the headrest frame, and the rotary gear is mounted on the rotary support shaft. The rotary gear is connected to the rotary damper in a transmission manner.

[0007] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the above-mentioned damped two-position locking car headrest further includes an unlocking component, the unlocking component including an unlocking button and an unlocking push plate; The unlock button is located on the headrest frame, and the unlock push plate is slidably disposed within the headrest frame. The unlock button can drive the unlock push plate toward one end of the locking assembly to control the connection between the locking assembly and the lock body assembly.

[0008] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the unlocking component further includes a cable slider, a zip spring, and a zip lock; The cable slider is slidably disposed within the headrest frame. One end of the pull spring is connected to the cable slider, and the other end is connected to the headrest frame, so that the cable slider tends to move away from the locking assembly. One end of the zipper is connected to the cable slider, and the other end is connected to an external drive component. The zipper can drive the cable slider to move toward the locking assembly.

[0009] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the lock body assembly includes a lock body disc, the tilting lock stop pin shaft, and the vertical lock stop pin shaft; The lock body disc is fixedly sleeved on the rotating support shaft, and both the tilting lock stop pin and the vertical lock stop pin are arranged on the lock body disc.

[0010] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein a limiting groove is formed on the edge of the lock body disk, and the two side walls of the limiting groove along the rotation direction of the lock body disk can abut against the limiting support shaft. The limiting support shaft is parallel to the rotating support shaft.

[0011] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the lock body disc is provided with a torsion spring connecting groove for connecting with the first reset torsion spring.

[0012] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the locking component includes an unlocking control lever and a locking lever; Both the unlocking control rod and the locking rod are rotatably sleeved on the unlocking support shaft. One end of the locking rod has a hook groove for matching the tilting lock pin shaft and the vertical lock pin shaft, and the other end has a locking synchronization rod, which can abut against the unlocking control rod. The unlocking support shaft is parallel to the rotating support shaft.

[0013] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the above-mentioned reset elastic member includes a second reset torsion spring and a third reset torsion spring; Both the second reset torsion spring and the third reset torsion spring are loosely fitted on the unlocking support shaft; One end of the second reset torsion spring is connected to the mounting base, and the other end is connected to the unlocking control lever, so that the unlocking control lever tends to abut against the locking synchronization lever; One end of the third reset torsion spring is connected to the mounting base, and the other end is connected to the locking rod, so that the locking rod tends to rotate toward the lock body assembly.

[0014] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the above-mentioned damped two-position locking car headrest further includes an unlocking drive seat for driving the unlocking control lever, the unlocking drive seat being rotatably disposed on the mounting base; One end of the unlocking drive seat is driven by the unlocking component, and the other end is provided with an unlocking ramp. The unlocking ramp abuts against the unlocking control rod so that when the unlocking drive seat rotates, it drives the unlocking control rod to rotate through the unlocking ramp.

[0015] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the unlocking drive seat is rotatably mounted on the mounting base via a stepped connector, and a fourth reset torsion spring is sleeved on the stepped connector. One end of the fourth reset torsion spring is connected to the unlocking drive seat, and the other end is connected to the mounting base, so that the unlocking ramp of the unlocking drive seat tends to move away from the unlocking control lever.

[0016] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the aforementioned rotating support shaft is provided with a rotating bushing for supporting the mounting base, and limit fixing rings are fixedly provided on both sides of the mounting base on the rotating support shaft.

[0017] Secondly, this utility model embodiment provides a car seat, including the aforementioned damped two-position locking car headrest.

[0018] Beneficial effects: This utility model provides a damped two-position locking car headrest, including a mounting base, a rotating support shaft, a locking assembly, a lock body assembly, and a damping assembly. The mounting base is fixedly mounted on the headrest frame, and the rotating support shaft is rotatably inserted into the mounting base, with headrest rods at both ends of the rotating support shaft. The lock body assembly is fixedly sleeved on the rotating support shaft, and a first return torsion spring is loosely sleeved on the rotating support shaft. One end of the first return torsion spring is connected to the mounting base, and the other end is connected to the lock body assembly. The lock body assembly has a tilting lock pin and a vertical lock pin that engage with the locking assembly. An unlocking support shaft is fixedly mounted on the mounting base, and the locking assembly is rotatably sleeved on the unlocking support shaft, which has a return spring for resetting the locking assembly. A limiting support shaft that can abut against the lock body assembly is fixedly mounted on the mounting base. The damping assembly includes a rotating damper and a rotating gear. The rotating damper is mounted on the headrest frame, and the rotating gear is mounted on the rotating support shaft, with the rotating gear and rotating damper being drively connected.

[0019] Specifically, with the headrest in its vertical position, when the user needs to adjust it, they trigger the locking assembly by pressing the unlock button. This causes the locking assembly to rotate and disengage from the vertical locking pin. The user then manually rotates the headrest to tilt it. When the headrest reaches its maximum angle, the limiting support shaft on the mounting base engages with the lock body assembly. Releasing the unlock button allows the locking assembly to connect with the tilting locking pin on the lock body assembly under the action of the reset spring. At this point, the first reset torsion spring is compressed, and it tends to drive the mounting base to reset. The mounting base is then restricted from rotating by the locking assembly and the tilting locking pin, thus completing the adjustment of the mounting base. The locking mechanism works as follows: When the headrest is switched from a reclining position to an upright position, the user triggers the unlock button, which drives the locking component to rotate. This causes the locking component to disengage from the reclining locking pin. At this point, the mounting base rotates under the action of the first return torsion spring until the limit support shaft on the mounting base abuts against the lock body assembly. Then, the user releases the unlock button, and the locking component connects to the vertical locking pin under the action of the return spring, thus locking the mounting base and preventing it from rotating. This improves the stability of the headrest. In addition, the damping component adjusts the rotation speed of the headrest, reducing vibration and rebound caused by excessive speed during the rotation process.

[0020] This utility model provides a car seat, including a damped two-position locking headrest. The car seat has the advantages described above compared to existing technologies, which will not be elaborated further here. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a two-position locking car headrest with damping provided for an embodiment of this utility model; Figure 2 A schematic diagram of the structure of a two-position locking car headrest with damping provided in an embodiment of this utility model; Figure 3 A schematic diagram of the interior of a two-position locking car headrest with damping provided in an embodiment of this utility model; Figure 4 A schematic diagram of the control method for a two-position locking car headrest with damping provided in an embodiment of this utility model; Figure 5 A schematic diagram of the internal structure of a two-position locking car headrest with damping provided in an embodiment of this utility model; Figure 6 Internal structure diagram of a two-position locking car headrest with damping provided in an embodiment of this utility model; Figure 7 A schematic diagram of the tilting locking pin and locking assembly of a two-position locking car headrest with damping when it is tilted, as provided in an embodiment of this utility model; Figure 8 A schematic diagram of a locking assembly in a two-position locking car headrest with damping provided in an embodiment of this utility model; Figure 9 A schematic diagram of the locking rod in a two-position locking car headrest with damping provided in an embodiment of this utility model; Figure 10 A schematic diagram of the lock body assembly and limiting support shaft of a two-position locking car headrest with damping provided for an embodiment of this utility model; Figure 11 A schematic diagram of the unlocking drive seat in a two-position locking car headrest with damping provided in an embodiment of this utility model; Figure 12 An oblique view of the unlocking drive seat in a two-position locking car headrest with damping, provided in an embodiment of this utility model; Figure 13 A schematic diagram showing the connection between the locking assembly and the lock body assembly of a damped two-position locking car headrest in a vertical use state, as provided in an embodiment of this utility model. Figure 14This is a schematic diagram showing the connection between the locking assembly and the lock body assembly of a two-position locking car headrest with damping in a tilted state, as provided in an embodiment of this utility model.

[0023] icon: 100 - Mounting base; 110 - Unlocking support shaft; 120 - Limiting support shaft; 200 - Rotary support shaft; 210 - Headrest rod; 220 - First return torsion spring; 230 - Rotary bushing; 240 - Limiting and fixing ring; 300-Locking assembly; 310-Unlocking control lever; 320-Locking lever; 321-Hanging slot; 322-Locking synchronization lever; 323-First inner sidewall; 324-Second inner sidewall; 325-Slot bottom; 326-Allowing slot; 330-Second reset torsion spring; 340-Third reset torsion spring; 350-Lubrication separator ring; 400-Lock body assembly; 401-Tilting lock stop pin; 402-Vertical lock stop pin; 410-Lock body disc; 411-Torsion spring connecting groove; 420-Limiting slot; 421-First side wall; 422-Second side wall; 500 - Unlock drive seat; 510 - Unlock ramp; 520 - Step connector; 530 - Fourth reset torsion spring; 600 - Seat headrest; 610 - Headrest frame; 700 - Damping assembly; 710 - Rotary damper; 720 - Rotary gear; 800 - Unlock component; 810 - Unlock button; 820 - Unlock push plate; 830 - Cable slider; 840 - Pull lock spring; 850 - Pull lock. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0029] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14As shown, this embodiment provides a two-position locking car headrest with damping, including a mounting base 100, a rotating support shaft 200, a locking assembly 300, a lock body assembly 400, and a damping assembly 700. The mounting base 100 is fixedly mounted on the headrest frame 610, and the rotating support shaft 200 is rotatably inserted into the mounting base 100. Headrest rods 210 are provided at both ends of the rotating support shaft 200. The lock body assembly 400 is fixedly sleeved on the rotating support shaft 200, and a first return torsion spring 220 is loosely sleeved on the rotating support shaft 200. One end of the first return torsion spring 220 is connected to the mounting base 100, and the other end is connected to the lock body assembly 400. The lock body assembly 400 has a damping mechanism. The locking assembly 300 is engaged with the tilting locking pin 401 and the vertical locking pin 402; the mounting base 100 is fixedly provided with the unlocking support shaft 110, the locking assembly 300 is rotatably sleeved on the unlocking support shaft 110, and the unlocking support shaft 110 is provided with a reset spring for resetting the locking assembly 300; the mounting base 100 is fixedly provided with the limiting support shaft 120 that can abut against the lock body assembly 400; the damping assembly 700 includes a rotary damper 710 and a rotary gear 720, the rotary damper 710 is provided on the headrest frame 610, the rotary gear 720 is provided on the rotary support shaft 200, and the rotary gear 720 is connected to the rotary damper 710 in a transmission manner.

[0030] Specifically, when the headrest 600 is in a vertical position and the user needs to adjust it, the user triggers the locking assembly 300 via the unlock button 810. This causes the locking assembly 300 to rotate and disengage from the vertical locking pin 402. The user then manually rotates the headrest 600 to tilt it. When the headrest 600 is rotated to its maximum angle, the limiting support shaft 120 on the mounting base 100 abuts against the lock body assembly 400. Releasing the unlock button 810 allows the locking assembly 300 to connect with the tilting locking pin 401 on the lock body assembly 400 under the action of the reset spring. At this point, the first reset torsion spring 220 is compressed and tends to drive the mounting base 100 to reset. The mounting base 100 is restricted from rotating by the locking assembly 300 and the tilting locking pin 401, thus completing the adjustment of the mounting base. When the headrest 600 is switched from a reclining position to an upright position, the user triggers the unlock button 810 to drive the locking assembly 300 to rotate, causing the locking assembly 300 to disengage from the reclining locking pin 401. At this time, the mounting base 100 rotates under the action of the first return torsion spring 220 until the limit support shaft 120 on the mounting base 100 abuts against the lock body assembly 400. Then, the user releases the unlock button 810, and the locking assembly 300 connects with the vertical locking pin 402 under the action of the return spring, thereby locking the mounting base 100 and preventing it from rotating, thus improving the stability of the headrest 600. In addition, the damping assembly 700 adjusts the rotation speed of the headrest 600, reducing vibration and rebound caused by excessive speed during the rotation of the headrest 600.

[0031] The rotating support shaft 200 is provided with a rotating bushing 230 for supporting the mounting base 100. The rotating bushing 230 allows the mounting base 100 and the rotating support shaft 200 to rotate smoothly relative to each other, reducing the friction between them. Additionally, limiting rings 240 are fixedly installed on both sides of the mounting base 100 on the rotating support shaft 200. These limiting rings 240 indicate the position of the mounting base 100 on the rotating support shaft 200, ensuring the stability of the mounting base 100 and thus improving the stability of the seat headrest 600 when locked.

[0032] The two ends of the rotating support shaft 200 are fixedly connected to the headrest rod 210, which is inserted into the seat back.

[0033] It should be noted that a rotating gear 720 is fixedly installed on the rotating support shaft 200, and a rotating damper 710 is fixedly installed on the headrest frame 610. Through the cooperation of the rotating damper 710 and the rotating gear 720, when the mounting base 100 rotates relative to the rotating support shaft 200, the rotation speed of the mounting base 100 can be reduced, so that the mounting base 100 rotates smoothly and avoids adverse effects caused by excessive rotation speed.

[0034] See Figures 1-14 As shown, in the optional embodiment, the damped two-position locking car headrest also includes an unlocking component 800. The unlocking component 800 includes an unlocking button 810 and an unlocking push plate 820. The unlocking button 810 is disposed on the headrest frame 610, and the unlocking push plate 820 is slidably disposed within the headrest frame 610. The unlocking button 810 can drive the unlocking push plate 820 toward one end of the locking component 300 to control the connection between the locking component 300 and the lock body component 400.

[0035] Specifically, the headrest frame 610 of the seat headrest 600 is provided with a mounting slot for installing the unlock button 810. When the user triggers the unlock button 810, it can drive the unlock push plate 820, so that the unlock push plate 820 can drive the unlock control rod 310 of the direct drive locking assembly 300 to rotate, thereby controlling the connection between the hook groove 321 on the locking rod 320 and the tilting lock pin 401 or the vertical lock pin 402. Alternatively, the unlock push plate 820 can drive the unlock drive seat 500 to rotate, and then the unlock drive seat 500 can drive the unlock control rod 310 of the locking assembly 300 to rotate.

[0036] See Figures 1-14 As shown, in an optional embodiment, the unlocking component 800 further includes a cable slider 830, a zip spring 840, and a zipper 850. The cable slider 830 is slidably disposed within the headrest frame 610. One end of the zip spring 840 is connected to the cable slider 830, and the other end is connected to the headrest frame 610, so that the cable slider 830 tends to move away from the locking component 300. One end of the zipper 850 is connected to the cable slider 830, and the other end is connected to an external drive component. The zipper 850 can drive the cable slider 830 to move toward the locking component 300.

[0037] Specifically, the cable slider 830 is slidably mounted within the headrest frame 610. The user can control the drive motor via the central control screen or the control buttons on the outside of the seat cushion. The drive motor pulls the zipper 850, which in turn pulls the cable slider 830. The cable slider 830 can directly drive the unlocking control lever 310 of the locking assembly 300 to rotate, or it can drive the unlocking control lever 310 of the locking assembly 300 to rotate via the unlocking drive seat 500. When the motor is turned off, the cable slider 830 is reset by the zipper spring 840.

[0038] Alternatively, the unlocking control lever 310 can be rotated by the pull 850 driving the locking assembly 300, or the unlocking drive seat 500 can be rotated. The pull 850 driving and unlocking button 810 methods coexist. The pull 850 driving method can be achieved by a motor pulling the pull 850, allowing the user to set a control switch on the central control screen or the outside of the seat cushion. The unlocking button 810 is located on the headrest frame 610, and the trigger surface of the unlocking button 810 is exposed on the outside of the seat headrest 600 for user operation.

[0039] See Figures 1-14 As shown, in an optional embodiment, the lock body assembly 400 includes a lock body disk 410, a tilting lock stop pin 401, and a vertical lock stop pin 402; the lock body disk 410 is fixedly sleeved on the rotating support shaft 200, and both the tilting lock stop pin 401 and the vertical lock stop pin 402 are disposed on the lock body disk 410.

[0040] Specifically, the tilt lock pin 401 and the vertical lock pin 402 are both mounted on the lock body plate 410. The lock body plate 410 is fixedly sleeved on the rotating support shaft 200. The lock body plate 410 is fixed relative to the car seat backrest. The mounting base 100 can rotate relative to the rotating support shaft 200 with the seat headrest 600, that is, the mounting base 100 can rotate relative to the lock body plate 410.

[0041] The lock body disk 410 is provided with a torsion spring connecting groove 411 for connecting with the first reset torsion spring 220. The first reset torsion spring 220 is sleeved on the rotating support shaft 200. The setting of the first reset torsion spring 220 makes the lock body disk 410 tend to rotate to a vertical use state.

[0042] See Figures 1-14 As shown, in an optional embodiment, a limiting groove 420 is provided on the edge of the lock body disk 410. The two side walls of the limiting groove 420 along the rotation direction of the lock body disk 410 can abut against the limiting support shaft 120. The limiting support shaft 120 is parallel to the rotation support shaft 200.

[0043] Specifically, a limiting groove 420 is provided on the edge of the lock body plate 410. The two side walls of the limiting groove 420 along the rotation direction of the lock body plate 410 can abut against the limiting support shaft 120. When the seat headrest 600 is in the vertical use state, the first side wall 421 of the limiting groove 420 can abut against the limiting support shaft 120. When the seat headrest 600 is in the tilted storage state, the second side wall 422 of the limiting groove 420 can abut against the limiting support shaft 120.

[0044] In addition, the limiting support shaft 120 and the rotating support shaft 200 are arranged in parallel. The lock body plate 410 set on the rotating support shaft 200 is perpendicular to the limiting support shaft 120. Therefore, when the mounting base 100 rotates with the seat headrest 600, it can drive the limiting support shaft 120 to rotate synchronously, so that the limiting support shaft 120 can engage with the limiting slot 420 on the lock body plate 410. With the cooperation of the locking rod 320 of the locking assembly 300 and the tilting locking pin 401 and the vertical locking pin 402, the mounting base 100 is locked.

[0045] See Figures 1-14 As shown, in an optional embodiment, the locking assembly 300 includes an unlocking control lever 310 and a locking lever 320. Both the unlocking control lever 310 and the locking lever 320 are rotatably mounted on the unlocking support shaft 110. One end of the locking lever 320 has a hook groove 321 for matching the tilting locking pin 401 and the vertical locking pin 402, and the other end has a locking synchronizing rod 322, which can abut against the unlocking control lever 310. The unlocking support shaft 110 is parallel to the rotating support shaft 200.

[0046] Specifically, the locking assembly 300 includes an unlocking control lever 310 and a locking lever 320. When used to trigger components such as the unlocking button 810, it can drive the unlocking control lever 310 to rotate around the unlocking support shaft 110. When the unlocking control lever 310 rotates, it can drive the locking lever 320 to rotate. When the locking lever 320 is driven to rotate by the unlocking control lever 310, the hook groove 321 on the locking lever 320 can disengage from the tilting locking pin 401 or the vertical locking pin 402 on the lock body disc 410. At this time, the mounting base 100 can rotate to the vertical use state under the action of the first reset torsion spring 220, or the user can rotate the seat headrest 600 to make the mounting base 100 rotate from the vertical use state to the tilting folding state.

[0047] It should be noted that when the headrest 600 is in the tilted-folded state, the limiting support shaft 120 abuts against the second side wall 422 of the limiting slot 420 of the lock body disc 410, and the tilt lock stop pin 401 abuts against the hook groove 321. Specifically, the tilt lock stop pin 401 abuts against the bottom 325 and the second inner side wall 324 of the hook groove 321, so that the hook groove 321 can hook the tilt lock stop pin 401. When the headrest 600 is subjected to force and the limiting support shaft 120 tends to move away from the second side wall 422, the tilt lock stop pin 401 can limit the bottom 325 and the second inner side wall 324 of the hook groove 321, so that the locking rod 320 cannot rotate, that is, the mounting base 100 cannot rotate, thus ensuring the stability of the headrest 600.

[0048] In addition, when the headrest 600 is in a vertical position, the limiting support shaft 120 abuts against the first side wall 421 of the limiting slot 420 of the lock body disc 410, and the vertical locking pin 402 abuts against the hooking slot 321. Specifically, the vertical locking pin 402 abuts against the bottom 325 and the first inner side wall 323 of the hooking slot 321, so that the hooking slot 321 can hook the vertical locking pin 402, thus fixing the headrest 600 to rotate back and forth. When the headrest 600 is subjected to force and the limiting support shaft 120 tends to move away from the first side wall 421, the vertical locking pin 402 can limit the bottom 325 and the first inner side wall 323 of the hooking slot 321, so that the locking rod 320 cannot rotate, that is, the mounting base 100 cannot rotate, thus ensuring the stability of the headrest 600.

[0049] It should be noted that a clearance groove 326 is provided in the bottom 325 of the mounting groove 321. The clearance groove 326 can eliminate the tolerance of the processing and assembly of each component, so that the bottom 325 of the mounting groove 321 and the first inner sidewall 323 can abut against the vertical locking pin 402, and the bottom 325 of the mounting groove 321 and the second inner sidewall 324 can abut against the tilting locking pin 401.

[0050] The unlocking control lever 310 and the locking lever 320 are rotatably mounted on the unlocking support shaft 110, and a lubrication separation ring 350 is mounted on the unlocking support shaft 110. The lubrication separation ring 350 is located between the unlocking control lever 310 and the locking lever 320 to reduce the friction between the unlocking control lever 310 and the locking lever 320.

[0051] See Figures 1-14 As shown, in the optional embodiment, the reset spring includes a second reset torsion spring 330 and a third reset torsion spring 340; both the second reset torsion spring 330 and the third reset torsion spring 340 are loosely fitted on the unlocking support shaft 110; one end of the second reset torsion spring 330 is connected to the mounting base 100, and the other end is connected to the unlocking control rod 310, so that the unlocking control rod 310 tends to abut against the locking synchronization rod 322; one end of the third reset torsion spring 340 is connected to the mounting base 100, and the other end is connected to the locking rod 320, so that the locking rod 320 tends to rotate toward the lock body assembly 400.

[0052] Specifically, the second reset torsion spring 330 enables the unlocking control lever 310 to have a reset tendency. When not driven by the unlocking button 810 or other control components, the second reset torsion spring 330 can drive the unlocking control lever 310 away from the locking lever 320.

[0053] The third reset torsion spring 340 enables the locking lever 320 to tend to rotate toward the tilt lock pin 401 or the vertical lock pin 402. When the user triggers the control button, the unlocking control lever 310 drives the locking lever 320 away from the tilt lock pin 401 or the vertical lock pin 402. When the user releases the control button, the locking lever 320 rotates toward the tilt lock pin 401 or the vertical lock pin 402 under the seat of the third reset torsion spring 340.

[0054] See Figures 1-14 As shown, in an optional embodiment, the damped two-position locking car headrest further includes an unlocking drive seat 500 for driving the unlocking control lever 310. The unlocking drive seat 500 is rotatably mounted on the mounting base 100. One end of the unlocking drive seat 500 is driven by the unlocking component 800, and the other end is provided with an unlocking ramp 510. The unlocking ramp 510 abuts against the unlocking control lever 310 so that when the unlocking drive seat 500 rotates, it drives the unlocking control lever 310 to rotate through the unlocking ramp 510.

[0055] The unlocking drive seat 500 is rotatably mounted on the mounting base 100 via a stepped connector 520. A fourth return torsion spring 530 is fitted onto the stepped connector 520. One end of the fourth return torsion spring 530 is connected to the unlocking drive seat 500, and the other end is connected to the mounting base 100, so that the unlocking ramp 510 of the unlocking drive seat 500 tends to move away from the unlocking control lever 310. The stepped connector 520 can be a stepped bolt or a stepped rivet.

[0056] Specifically, when the user triggers the unlock button 810, it drives the unlock drive seat 500 to rotate. The unlock ramp 510 on the unlock drive seat 500 rotates synchronously. The rotation axis of the unlock ramp 510 is perpendicular to the rotation axes of both the unlock control lever 310 and the locking lever 320. The bottom of the unlock ramp 510 first abuts against the unlock control lever 310. Then, the unlock ramp 510 gradually rotates and abuts against the unlock control lever 310. The unlock ramp 510 gradually raises the unlock control lever 310, realizing the rotation of the unlock control lever 310. The rotation of the unlock control lever 310 can drive the locking synchronization rod 322 of the locking lever 320 to rotate synchronously, thereby driving the locking lever 320 to rotate, thus controlling the separation and connection of the locking lever 320 with the tilting lock pin 401 or the vertical lock pin 402.

[0057] This embodiment provides a car seat, including a damped two-position locking car headrest.

[0058] Specifically, the car seat provided in this embodiment has the advantages of the aforementioned damped two-position locking car headrest compared to the prior art, which will not be elaborated here.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A damped, two-position locking car headrest, characterized in that, include: Mounting base (100), rotating support shaft (200), locking assembly (300), lock body assembly (400) and damping assembly (700); The mounting base (100) is fixedly mounted on the headrest frame (610), and the rotating support shaft (200) is rotatably inserted into the mounting base (100). Headrest rods (210) are provided at both ends of the rotating support shaft (200). The lock body assembly (400) is fixedly sleeved on the rotating support shaft (200), and a first reset torsion spring (220) is loosely sleeved on the rotating support shaft (200). One end of the first reset torsion spring (220) is connected to the mounting base (100), and the other end is connected to the lock body assembly (400). The lock body assembly (400) has a tilting lock pin (401) and a vertical lock pin (402) that engage with the locking assembly (300). An unlocking support shaft (110) is fixedly provided on the mounting base (100), and the locking component (300) is rotatably sleeved on the unlocking support shaft (110). A reset spring is provided on the unlocking support shaft (110) for resetting the locking component (300). The mounting base (100) is fixedly provided with a limiting support shaft (120) that can abut against the lock body assembly (400). The damping assembly (700) includes a rotary damper (710) and a rotary gear (720). The rotary damper (710) is disposed on the headrest frame (610), and the rotary gear (720) is disposed on the rotary support shaft (200). The rotary gear (720) is connected to the rotary damper (710) in a transmission manner.

2. The damped two-position locking car headrest according to claim 1, characterized in that, It also includes an unlocking component (800), which includes an unlocking button (810) and an unlocking push plate (820). The unlock button (810) is located on the headrest frame (610), and the unlock push plate (820) is slidably located inside the headrest frame (610). The unlock button (810) can drive the unlock push plate (820) toward one end of the locking assembly (300) to control the connection between the locking assembly (300) and the lock body assembly (400).

3. The damped two-position locking car headrest according to claim 2, characterized in that, The unlocking assembly (800) also includes a cable slider (830), a zip spring (840), and a zipper (850). The cable slider (830) is slidably disposed within the headrest frame (610). One end of the pull spring (840) is connected to the cable slider (830), and the other end is connected to the headrest frame (610), so that the cable slider (830) tends to move away from the locking assembly (300). One end of the zipper (850) is connected to the cable slider (830), and the other end is connected to an external drive unit. The zipper (850) can drive the cable slider (830) to move toward the locking assembly (300).

4. The damped two-position locking car headrest according to claim 1, characterized in that, The lock body assembly (400) includes a lock body disc (410), a tilt lock stop pin (401), and a vertical lock stop pin (402). The lock body disc (410) is fixedly sleeved on the rotating support shaft (200), and the tilting lock stop pin shaft (401) and the vertical lock stop pin shaft (402) are both arranged on the lock body disc (410); The lock body disc (410) is provided with a torsion spring connecting groove (411) for connecting with the first reset torsion spring (220).

5. The damped two-position locking car headrest according to claim 4, characterized in that, The edge of the lock body disk (410) is provided with a limiting groove (420), and the two side walls of the limiting groove (420) along the rotation direction of the lock body disk (410) can abut against the limiting support shaft (120). The limiting support shaft (120) is parallel to the rotating support shaft (200).

6. The damped two-position locking car headrest according to claim 1, characterized in that, The locking assembly (300) includes an unlocking control lever (310) and a locking lever (320). Both the unlocking control lever (310) and the locking lever (320) are rotatably sleeved on the unlocking support shaft (110). One end of the locking lever (320) is provided with a hook groove (321) for matching the tilting lock pin (401) and the vertical lock pin (402), and the other end has a locking synchronization rod (322). The locking synchronization rod (322) can abut against the unlocking control lever (310). The unlocking support shaft (110) is parallel to the rotating support shaft (200).

7. The damped two-position locking car headrest according to claim 6, characterized in that, The reset elastic element includes a second reset torsion spring (330) and a third reset torsion spring (340). Both the second reset torsion spring (330) and the third reset torsion spring (340) are loosely fitted on the unlocking support shaft (110); One end of the second reset torsion spring (330) is connected to the mounting base (100), and the other end is connected to the unlocking control lever (310), so that the unlocking control lever (310) tends to abut against the locking synchronization lever (322); One end of the third reset torsion spring (340) is connected to the mounting base (100), and the other end is connected to the locking rod (320) so that the locking rod (320) tends to rotate toward the lock body assembly (400).

8. The damped two-position locking car headrest according to claim 6, characterized in that, It also includes an unlocking drive seat (500) for driving the unlocking control lever (310), the unlocking drive seat (500) being rotatably mounted on the mounting base (100); One end of the unlocking drive seat (500) is driven by the unlocking component (800), and the other end is provided with an unlocking ramp (510). The unlocking ramp (510) abuts against the unlocking control rod (310) so that when the unlocking drive seat (500) rotates, the unlocking control rod (310) is driven to rotate through the unlocking ramp (510).

9. The damped two-position locking car headrest according to claim 8, characterized in that, The unlocking drive seat (500) is rotatably mounted on the mounting base (100) via a stepped connector (520). A fourth reset torsion spring (530) is sleeved on the stepped connector (520). One end of the fourth reset torsion spring (530) is connected to the unlocking drive seat (500), and the other end is connected to the mounting base (100), so that the unlocking ramp (510) of the unlocking drive seat (500) tends to move away from the unlocking control lever (310).

10. A car seat, characterized in that, Includes the damped two-position locking car headrest as described in any one of claims 1-9.

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