A reversible car seat headrest

CN224375410UActive Publication Date: 2026-06-19SHENYANG JINBEI LEAR AUTOMOTIVE SEATING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENYANG JINBEI LEAR AUTOMOTIVE SEATING CO LTD
Filing Date
2025-06-19
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional car seat headrests require drivers and passengers to exert continuous force to keep their heads stable during prolonged use, leading to muscle tension and fatigue. Furthermore, headrest covers are inconvenient to replace and clean.

Method used

A flip-up car seat headrest was designed, comprising a massage mechanism, a flipping mechanism, a fixing mechanism, an adjustment mechanism, and a replacement mechanism. The massage motor drives the massage balls to perform neck massage, the flipping mechanism adjusts the headrest angle, and the replacement mechanism enables quick removal and installation of the headrest cover.

Benefits of technology

It effectively relieves neck muscle tension during long drives, improves comfort, simplifies the replacement and cleaning process of the headrest cover, and enhances ease of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of automobile seat, disclose a kind of turnover type automobile seat headrest, including support main body, the outer wall of support main body is slidably connected with headrest cover, the inner wall of support main body is provided with massage mechanism, the bottom of support main body is provided with turnover mechanism, the turnover mechanism is used to headrest to overturn, the bottom of turnover mechanism is provided with fixed mechanism, the top of fixed mechanism is provided with adjusting mechanism, the adjusting mechanism is used to adjust the overturning angle of headrest, the left and right sides of support main body are provided with replacement mechanism, the replacement mechanism is used to quickly replace cleaning headrest cover, long time car, the neck muscle of driver and passenger is easy to accumulate nervousness, cause fatigue due to sustained effort, at this time, massage motor drives rotary seat to rotate, connecting shaft rotates, so that massage ball does circular motion, massages neck muscle, relieves fatigue.
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Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a flip-up automotive seat headrest. Background Technology

[0002] As a component of the car interior, the car seat headrest is a device specifically designed to ensure the safety of the head of the driver and passengers. Located at the top of the car seat, it comes into direct contact with the head of the driver and passengers. Its main function is to provide support and cushioning for the head of the driver and passengers in the event of a collision, especially a rear-end collision, thereby reducing the risk of neck injury and protecting the lives of the drivers and passengers.

[0003] Flip-up car seat headrests are a type of headrest developed from traditional car seat headrests, featuring a flip-up function. Unlike the fixed shape of ordinary headrests, flip-up car seat headrests have a flip-up structure. This design aims to meet the diverse needs of drivers and passengers for head support and comfort in different scenarios. Through this flexible flip-up function, flip-up car seat headrests enhance the functionality and adaptability of car seats.

[0004] Traditional car seat headrests cannot be adjusted to the ideal angle every time when multiple people use the same seat, as each person has different preferences. Current technology uses a dial on the side of the headrest with pointers corresponding to the seat back to indicate the angle during adjustment. Positioning pins are inserted into different positioning holes to fix the headrest and ensure accurate angle. However, in actual use, because existing headrests are of a fixed shape and material, during long-distance driving, the muscles in the neck need to exert continuous force to keep the head stable, which causes muscle tension to accumulate and eventually leads to fatigue. Utility Model Content

[0005] The purpose of this invention is to provide a flip-up car seat headrest that solves the problem of driver fatigue caused by the need for continuous muscle exertion during long-distance driving.

[0006] To achieve the above objectives, this utility model provides a flip-up car seat headrest, comprising a support body, a headrest cover slidably connected to the outer wall of the support body, a massage mechanism provided on the inner wall of the support body, a flipping mechanism provided at the bottom of the support body for flipping the headrest, a fixing mechanism provided at the bottom of the flipping mechanism, an adjustment mechanism provided at the top of the fixing mechanism for adjusting the flipping angle of the headrest, and replacement mechanisms provided on both the left and right sides of the support body for quickly replacing and cleaning the headrest cover. The massage mechanism includes two fixing blocks, the bottoms of which are respectively fixedly connected to the left and right ends of the bottom inner wall of the support body, and fixing rings fixedly connected to the tops of the two fixing blocks. Rotating seats are rotatably connected to the inner walls of the two fixing rings, and multiple connecting shafts are equidistantly fixedly connected to the front sides of the two rotating seats. Massage balls are fixedly connected to the front ends of the multiple connecting shafts. Massage motors are fixedly connected to the left and right ends of the bottom inner wall of the support body, and the output ends of the two massage motors are respectively fixedly connected to the rear sides of the corresponding rotating seats.

[0007] The replacement mechanism includes multiple connecting blocks, the outer walls of which are fixedly connected to the inner wall of the headrest cover. Positioning blocks are fixedly connected to the inner sides of each connecting block. Engaging grooves are formed on the front sides of each positioning block. Mother blocks are fixedly connected to the front and rear ends of the left and right sides of the support body. Positioning grooves are formed on the outer sides of each mother block. The inner walls of each positioning groove are slidably connected to the outer walls of the corresponding positioning blocks. Engaging balls are slidably connected to the inner walls of each engagement groove. Springs are slidably connected to the inner walls of each mother block. One end of each spring is fixedly connected to the other side of the corresponding engaging ball. Unlocking components are provided on the inner walls of each spring.

[0008] The flipping mechanism includes two flipping rings. The tops of the two flipping rings are fixedly connected to the bottom left and right sides of the support body, respectively. The inner walls of the two flipping rings are fixedly connected to the same rotating shaft. The outer wall of the rotating shaft is fixedly connected to a transmission worm gear. The bottom left and right sides of the rotating shaft are rotatably connected to mounting rods.

[0009] The fixing mechanism includes a fixing plate, the left and right sides of which are fixedly connected to the adjacent sides of two mounting rods, and fixing blocks two are fixedly connected to the top front and rear sides of the fixing plate. Triangular blocks are fixedly connected to the left and right sides of the two fixing blocks two, and the bottom of the two triangular blocks is fixedly connected to the top of the fixing plate.

[0010] The adjustment mechanism includes a second rotating shaft, the outer wall of which is rotatably connected to the inner wall of a corresponding fixed block, the outer wall of which is fixedly connected to a worm gear, and the rear end of which is fixedly connected to a rotating disk.

[0011] The unlocking assembly includes multiple unlocking levers, the outer walls of which are slidably connected to the inner walls of corresponding springs, one end of which is fixedly connected to the other side of a corresponding locking ball, and the other end of which is fixedly connected to an unlocking handle.

[0012] The front of both the support body and the headrest cover are designed with an arc shape to fit the curve of the human head, and the outer wall of the rotating disk is fixedly connected with teeth.

[0013] The left and right ends of the rotating shaft are fixedly connected to limit blocks, and the inner walls of the two limit blocks are rotatably connected to the opposite sides of the two rotating rings.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, during long-term car rides, the neck muscles of drivers and passengers are prone to tension and fatigue due to continuous exertion. At this time, the massage motor drives the rotating seat to rotate, and the connecting shaft rotates accordingly, causing the massage ball to make circular motion, massaging the neck muscles and relieving fatigue. When it is necessary to adjust the headrest angle, the rotating disc is rotated, which drives the worm gear to rotate and mesh with the worm wheel, driving the rotating shaft to rotate and realize the headrest flipping, providing a more fitting support for the neck and relieving fatigue.

[0016] 2. In this utility model, when the headrest cover needs to be replaced and cleaned, the operator pulls the unlocking handle outward, causing the unlocking lever to slide, separating the locking ball from the locking groove, thus releasing the headrest cover from the support body. Because the positioning block is slidably connected to the positioning groove, the headrest cover can be easily slid out for disassembly. During installation, the headrest cover positioning block is aligned with the positioning groove of the support body and pushed in. The locking ball slides into the locking groove under the action of the spring, completing the fixation. This simplifies the process and solves the problem of inconvenience in replacement and cleaning. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a perspective view of a flip-up car seat headrest proposed in this utility model;

[0019] Figure 2 This is a front view of a flip-up car seat headrest proposed in this utility model;

[0020] Figure 3This is a schematic diagram of a massage mechanism for a flip-type car seat headrest proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of a fixing mechanism for a flip-type car seat headrest proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of a flip-type car seat headrest replacement mechanism proposed in this utility model.

[0023] 1. Support body; 2. Massage mechanism; 201. Fixing block one; 202. Fixing ring; 203. Rotating seat; 204. Connecting shaft; 205. Massage ball; 206. Massage motor; 3. Replacement mechanism; 301. Connecting block; 302. Positioning block; 303. Engaging groove; 304. Mother block; 305. Positioning groove; 306. Engaging ball; 307. Spring; 308. Unlocking component; 3081. Unlocking lever; 3082. Unlocking handle; 4. Headrest cover; 5. Flipping mechanism; 501. Flipping ring; 502. Rotating shaft one; 503. Transmission worm gear; 504. Mounting rod; 6. Fixing mechanism; 601. Fixing plate; 602. Fixing block two; 603. Triangular block; 7. Adjustment mechanism; 701. Rotating shaft two; 702. Worm gear; 703. Rotating disc; 8. Tooth; 9. Limiting block. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0025] Reference Figure 2 , Figure 3 and Figure 4This utility model provides an embodiment of a flip-up car seat headrest, including a support body 1 for structural support of the headrest. A headrest cover 4 is slidably connected to the outer wall of the support body 1 for easy replacement and cleaning. A massage mechanism 2 is provided on the inner wall of the support body 1 to massage the neck of the driver and passenger to relieve fatigue. A flipping mechanism 5 is provided at the bottom of the support body 1 to realize the flipping action of the headrest. A fixing mechanism 6 is provided at the bottom of the flipping mechanism 5 to stabilize the connection between the headrest and the seat. An adjustment mechanism 7 is provided at the top of the fixing mechanism 6 to adjust the flipping angle of the headrest. Replacement mechanisms 3 are provided on both the left and right sides of the support body 1 for quick replacement and cleaning of the headrest cover 4. The massage mechanism 2 includes two fixing blocks 201. These are fixed to the left and right ends of the bottom inner wall of the support body 1 for positioning. The tops of the two fixed blocks 201 are respectively fixedly connected to fixed rings 202 for mounting rotating seats 203. The inner walls of both fixed rings 202 are rotatably connected to rotating seats 203, driving the connecting shafts 204 to rotate. Multiple connecting shafts 204 are equidistantly fixedly connected to the front sides of both rotating seats 203, connecting massage balls 205 and driving their movement. Massage balls 205 are fixedly connected to the front ends of the multiple connecting shafts 204, directly massaging the neck. Massage motors 206 are fixedly connected to the left and right ends of the bottom inner wall of the support body 1, providing power for the rotation of the rotating seats 203. The output ends of the two massage motors 206 are respectively fixedly connected to the rear sides of the corresponding rotating seats 203, transmitting power... The power transmission causes the rotating seat 203 to rotate. The flipping mechanism 5 includes two flipping rings 501, connecting the support body 1 and the rotating shaft 502. The tops of the two flipping rings 501 are fixedly connected to the bottom left and right sides of the support body 1, respectively, realizing the connection between the support body 1 and the flipping mechanism 5. The inner walls of the two flipping rings 501 are fixedly connected to the same rotating shaft 502, serving as the rotating shaft for the headrest flipping. The middle of the outer wall of the rotating shaft 502 is fixedly connected to a transmission worm gear 503, which cooperates with the worm 702 to realize the adjustment of the headrest flipping angle. The bottom left and right sides of the rotating shaft 502 are rotatably connected to mounting rods 504 for connection with the fixing mechanism 6. The fixing mechanism 6 includes a fixing plate 601, which connects the two mounting rods 504 and provides a mounting base. The left side of the fixing plate 601... The right side is fixedly connected to the adjacent sides of the two mounting rods 504 to secure the connection of the mounting rods 504. Fixing blocks 602 are fixedly connected to the front and rear sides of the top of the fixing plate 601, and a rotating shaft 701 is installed. Triangular blocks 603 are fixedly connected to the left and right sides of the two fixing blocks 602 to enhance the stability of the connection between the fixing blocks 602 and the fixing plate 601. The bottoms of the two triangular blocks 603 are fixedly connected to the top of the fixing plate 601 for reinforcement. The adjusting mechanism 7 includes a rotating shaft 701, which rotates within the fixing blocks 602 to drive the worm gear 702 to rotate. The front and rear sides of the outer wall of the rotating shaft 701 are rotatably connected to the inner walls of the corresponding fixing blocks 602 to achieve rotational support. The worm gear 702 is fixedly connected to the outer wall of the rotating shaft 701.The headrest tilting angle is adjusted by meshing with the transmission worm gear 503. A rotating disk 703 is fixedly connected to the rear end of the rotating shaft 701, facilitating user operation and adjustment of the headrest tilting angle.

[0026] Specifically, when passengers travel for extended periods, their neck muscles accumulate tension due to continuous exertion, leading to fatigue. At this time, the massage mechanism 2 comes into play, activating the massage motor 206. The motor's output drives the rotating seat 203 to rotate within the fixed ring 202. The connecting shaft 204, located at the front of the rotating seat 203, rotates accordingly, causing the massage balls 205 to begin circular motion. Multiple massage balls 205 simultaneously massage the neck muscles, relieving muscle tension and reducing fatigue. If passengers need to adjust the headrest angle for greater comfort... With proper support, the adjustable mechanism 7 can be operated. Rotating the rotating disk 703 drives the second rotating shaft 701 to rotate, and the worm gear 702 fixed on the second rotating shaft 701 rotates accordingly. The worm gear 702 meshes with the transmission worm wheel 503, thereby driving the first rotating shaft 502 to rotate. The mounting rod 504 installed at the bottom of the first rotating shaft 502 also rotates, realizing the flipping of the headrest and adjusting it to a suitable angle to provide more fitting support for the neck. This solves the problem that the headrest in the prior art cannot effectively relieve neck muscle fatigue during long-term driving due to its fixed shape and material.

[0027] Reference Figure 1 , Figure 3 and Figure 5The replacement mechanism 3 includes multiple connecting blocks 301. The outer walls of the multiple connecting blocks 301 are fixedly connected to the inner wall of the headrest cover 4, forming a stable connection between the connecting blocks 301 and the headrest cover 4. Positioning blocks 302 are fixedly connected to the inner sides of the multiple connecting blocks 301, providing a reference for positioning and installation. The front sides of the multiple positioning blocks 302 are provided with engaging grooves 303 for engaging with engaging balls 306 to achieve fixation. The left and right sides, front and rear ends of the support body 1 are fixedly connected with mother blocks 304, serving as components that engage with the positioning blocks 302. The outer sides of the multiple mother blocks 304 are provided with positioning grooves 305, which slide and connect with the outer walls of the positioning blocks 302 to guide installation. The inner walls of the multiple positioning grooves 305 slide and connect with the corresponding outer walls of the positioning blocks 302, facilitating the installation and removal of the headrest cover 4. Engaging balls 306 are slidably connected to the inner walls of the multiple engaging grooves 303, and the engaging balls 306 engage with the engaging grooves 303 to fix the headrest cover 4. Springs 307 are slidably connected to the inner walls of each of the multiple springs 304 to provide elasticity for the locking ball 306. One end of each of the multiple springs 307 is fixedly connected to the other side of the corresponding locking ball 306 to keep the locking ball 306 in the working position. Each of the multiple springs 307 has an unlocking component 308 for releasing the locking ball 306 from the locking groove 303. The unlocking component 308 includes multiple unlocking levers 3081. Pulling the unlocking levers 3081 can move the locking ball 306. The outer walls of the multiple unlocking levers 3081 are slidably connected to the inner walls of the corresponding springs 307. The movement within the springs 307 releases the locking. One end of each of the multiple unlocking levers 3081 is fixedly connected to the other side of the corresponding locking ball 306 to ensure that the locking ball 306 can move with the unlocking levers 3081. The other end of each of the multiple unlocking levers 3081 is fixedly connected to an unlocking handle 3082 for easy gripping and unlocking by the operator.

[0028] Specifically, the operator holds the unlocking handle 3082 and pulls it outward. At this time, the unlocking lever 3081 connected to the unlocking handle 3082 slides inside the spring 307, causing the locking ball 306 to move away from the locking groove 303. Since the locking ball 306 separates from the locking groove 303, the locking and fixing state between the headrest cover 4 and the support body 1 is released. Because the positioning block 302 and the positioning groove 305 are slidably connected, after the locking is released, the headrest cover 4 can be easily slid off the support body 1 along the direction of the positioning groove 305, achieving quick disassembly. The connecting blocks 301 are evenly distributed and fixed on the inner wall of the headrest cover 4, ensuring the stability of the headrest cover 4 during installation and use, and also providing a base for the positioning blocks. 302 provides a stable connection base. When the headrest cover 4 is cleaned or needs to be replaced, the positioning block 302 on the headrest cover 4 is aligned with the positioning groove 305 on the female block 304 on the support body 1 and gently pushed in. As the positioning block 302 gradually enters the positioning groove 305, the engaging groove 303 on the front side of the positioning block 302 will align with the engaging ball 306. At this time, under the elastic force of the spring 307, the engaging ball 306 will automatically slide into the engaging groove 303, completing the fixed connection between the headrest cover 4 and the support body 1. This simplifies the replacement and cleaning process of the headrest cover 4, realizes quick replacement, and effectively solves the problem of inconvenient replacement and cleaning of the headrest cover 4 in the prior art, thereby improving the overall comfort and convenience of driving and riding.

[0029] Reference Figure 2 , Figure 3 and Figure 4 The front of the support body 1 is designed with an arc shape, which can better fit the curve of the human head and provide comfortable support for the head. The front of the headrest cover 4 is also designed with an arc shape, which complements the arc shape of the support body 1 to further enhance the fit to the curve of the human head and improve comfort. The outer wall of the rotating disk 703 is fixedly connected with teeth 8, which makes it easy for drivers and passengers to hold and apply force to rotate the rotating disk 703, thereby more easily adjusting the flip angle of the headrest. The left and right ends of the rotating shaft 502 are fixedly connected with limit blocks 9 to restrict the axial movement of the rotating shaft 502 in the flip ring 501 and ensure the stability of the headrest flipping process. The inner walls of the two limit blocks 9 are rotatably connected to the opposite side of the two flip rings 501, so that the rotating shaft 502 can rotate stably in the flip ring 501 without affecting the normal flipping of the headrest due to excessive movement.

[0030] Specifically, the front of the support body 1 and the headrest cover 4 adopts an arc design, which can better fit the curve of the human head and provide comfortable support for the head. The tooth 8 makes it easy for drivers and passengers to hold and apply force to rotate the rotating disk 703, thereby more easily adjusting the flip angle of the headrest. The limiting block 9 restricts the axial movement of the rotating shaft 502 within the flip ring 501, ensuring the stability of the headrest flipping process.

[0031] Working Principle: When passengers travel for extended periods, the neck muscles accumulate tension due to continuous exertion, leading to fatigue. At this time, the massage mechanism 2 activates, starting the massage motor 206. The motor's output drives the rotating seat 203 to rotate within the fixed ring 202. The connecting shaft 204, connected to the front of the rotating seat 203, rotates accordingly, causing the massage balls 205 to begin circular motion. Multiple massage balls 205 simultaneously massage the neck muscles, relieving muscle tension and reducing fatigue. If passengers need to adjust the headrest angle for a more comfortable experience, the massage mechanism can be activated. The headrest provides comfortable support and features an operable adjustment mechanism 7. Rotating the rotating disk 703 drives the second rotating shaft 701 to rotate, causing the worm gear 702 fixed on the second rotating shaft 701 to rotate accordingly. The worm gear 702 meshes with the transmission worm wheel 503, thereby driving the first rotating shaft 502 to rotate. The mounting rod 504 installed at the bottom of the first rotating shaft 502 also rotates, enabling the headrest to be flipped and adjusted to a suitable angle, providing more comfortable support for the neck. This solves the problem in the prior art where headrests, due to their fixed shape and material, cannot effectively relieve neck muscle fatigue during long-term driving.

[0032] Furthermore, when the headrest cover 4 needs to be replaced and cleaned, the operator first grasps the unlocking handle 3082 and pulls it outward. At this time, the unlocking lever 3081 connected to the unlocking handle 3082 slides inside the spring 307, causing the locking ball 306 to move away from the locking groove 303. Since the locking ball 306 separates from the locking groove 303, the locking and fixing state between the headrest cover 4 and the support body 1 is released. Because the positioning block 302 and the positioning groove 305 are slidably connected, after the locking is released, the headrest cover 4 can be easily slid off the support body 1 along the direction of the positioning groove 305, achieving quick disassembly. The connecting blocks 301 are evenly distributed and fixed on the inner wall of the headrest cover 4, ensuring the stability of the headrest cover 4 during installation and use. This also provides a stable connection base for the positioning block 302. When the headrest cover 4 is cleaned or needs to be replaced, the positioning block 302 on the headrest cover 4 is aligned with the positioning groove 305 on the mother block 304 on the support body 1 and gently pushed in. As the positioning block 302 gradually enters the positioning groove 305, the engaging groove 303 on the front side of the positioning block 302 will align with the engaging ball 306. At this time, under the elastic force of the spring 307, the engaging ball 306 will automatically slide into the engaging groove 303, completing the fixed connection between the headrest cover 4 and the support body 1. This simplifies the replacement and cleaning process of the headrest cover 4, realizes quick replacement, and effectively solves the problem of inconvenient replacement and cleaning of the headrest cover 4 in the existing technology, thereby improving the overall comfort and convenience of driving and riding.

[0033] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A reversible car seat headrest comprising a support body, characterised in that: A headrest cover is slidably connected to the outer wall of the support body. A massage mechanism is provided on the inner wall of the support body. A flipping mechanism is provided at the bottom of the support body for flipping the headrest. A fixing mechanism is provided at the bottom of the flipping mechanism. An adjustment mechanism is provided at the top of the fixing mechanism for adjusting the flipping angle of the headrest. A replacement mechanism is provided on both the left and right sides of the support body for quickly replacing and cleaning the headrest cover. The massage mechanism includes two fixed blocks, the bottoms of which are fixedly connected to the left and right ends of the inner wall of the support body, respectively. A fixed ring is fixedly connected to the top of each of the two fixed blocks, and a rotating seat is rotatably connected to the inner wall of each of the two fixed rings. Multiple connecting shafts are equidistantly fixedly connected to the front sides of each of the two rotating seats, and massage balls are fixedly connected to the front ends of each of the multiple connecting shafts. Massage motors are fixedly connected to the left and right ends of the inner wall of the support body, and the output ends of the two massage motors are fixedly connected to the rear sides of the corresponding rotating seats.

2. The reversible car seat headrest of claim 1, wherein: The replacement mechanism includes multiple connecting blocks. The outer walls of the multiple connecting blocks are fixedly connected to the inner wall of the headrest cover. Positioning blocks are fixedly connected to the inner sides of the multiple connecting blocks. Engaging grooves are formed on the front sides of the multiple positioning blocks. Mother blocks are fixedly connected to the front and rear ends of the left and right sides of the support body. Positioning grooves are formed on the outer sides of the multiple mother blocks. The inner walls of the multiple positioning grooves are slidably connected to the outer walls of the corresponding positioning blocks. Engaging balls are slidably connected to the inner walls of the multiple engagement grooves. Springs are slidably connected to the inner walls of the multiple mother blocks. One end of each spring is fixedly connected to the other side of the corresponding engaging ball. Unlocking components are provided on the inner walls of the multiple springs.

3. The reversible car seat headrest of claim 1, wherein: The flipping mechanism includes two flipping rings. The tops of the two flipping rings are fixedly connected to the bottom left and right sides of the support body, respectively. The inner walls of the two flipping rings are fixedly connected to the same rotating shaft. The outer wall of the rotating shaft is fixedly connected to a transmission worm gear. The bottom left and right sides of the rotating shaft are rotatably connected to mounting rods.

4. The reversible car seat headrest of claim 3, wherein: The fixing mechanism includes a fixing plate, the left and right sides of which are respectively fixedly connected to the adjacent sides of two mounting rods. Fixing blocks 2 are fixedly connected to the front and rear sides of the top of the fixing plate. Triangular blocks are fixedly connected to the left and right sides of the two fixing blocks 2. The bottom of the two triangular blocks is fixedly connected to the top of the fixing plate.

5. The reversible car seat headrest of claim 4, wherein: The adjustment mechanism includes a second rotating shaft, the outer wall of which is rotatably connected to the inner wall of a corresponding fixed block, the outer wall of which is fixedly connected to a worm gear, and the rear end of which is fixedly connected to a rotating disk.

6. A flip-up car seat headrest according to claim 2, characterized in that: The unlocking assembly includes multiple unlocking levers, the outer walls of which are slidably connected to the inner walls of corresponding springs, one end of which is fixedly connected to the other side of a corresponding locking ball, and the other end of which is fixedly connected to an unlocking handle.

7. A flip-up car seat headrest according to claim 5, characterized in that: Both the support body and the front of the headrest cover are designed with an arc shape to fit the curve of the human head, and the outer wall of the rotating disk is fixedly connected with teeth.

8. A flip-up car seat headrest according to claim 3, characterized in that: Limiting blocks are fixedly connected to both the left and right ends of the rotating shaft, and the inner walls of the two limiting blocks are rotatably connected to the opposite sides of the two rotating rings.