A self-locking and self-unlocking device for quick plug-in and plug-out of a music headrest of an automobile seat
Patent Information
- Application Number
- CN202522672545.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-17
AI Technical Summary
Existing car seat music headrests have problems such as insufficient travel adjustment function, unstable electrical signal and increased operating force during quick insertion and removal, especially the conductive sheet is easily affected by the in-vehicle environment.
Employing a self-locking assembly and a return spring structure, the music headrest body can be self-locked and self-unlocked by operating it upwards or downwards, ensuring that the electrical components are fixedly connected and preventing relative movement. Combined with the design of the plastic guide sleeve and the frame beam, it enables quick insertion, removal, and adjustment.
It enables quick plugging and unplugging and adjustment of the music headrest, with stable electrical signals and stable operating force, avoiding the influence of the conductive sheet on the environment, thus improving the user experience and reliability.
Smart Images
Figure CN224928904U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive seat technology, specifically to a self-locking and self-unlocking device for quick insertion and removal of an automotive seat music headrest. Background Technology
[0002] As people's living standards improve, cars, as an indispensable part of people's lives, are no longer just a means of transportation. They are now equipped with features such as "music headrests" and "double bed modes" for passengers' entertainment and rest. Among them, the front "double bed mode" with music function is particularly special. It requires adjusting the backrest of the front seat to a near-horizontal position to form a "single bed" mode with the second-row seats. This requires removing the front seat headrests. If the front seat headrests are music headrests, it is necessary to enable quick disassembly and reconnection of the headrests and electrical components, while ensuring that the headrests have travel adjustment functions and can provide stable signal and high-quality music functions.
[0003] Currently available quick-release music headrests, while enabling quick insertion and removal, mostly lack travel adjustment functionality. Those with travel adjustment, due to the use of electrical components as conductive plates and slide rails, have exposed conductive plates that are susceptible to moisture and dust in the car interior, and suffer from unstable electrical signals during sliding. Those with travel adjustment but non-sliding electrical components require external force (such as guide sleeve compression) for their self-locking structure, increasing the effort required for headrest adjustment and impacting the user experience.
[0004] Therefore, given the defects and shortcomings of the existing technology, it is necessary to design a new self-locking and self-unlocking device that enables quick insertion and removal of the music headrest to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest, aiming to solve the problems mentioned in the background art.
[0006] This utility model is achieved through the following technical solution:
[0007] This utility model is a self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest, including a headrest body, a headrest speaker, a speaker wiring harness, a headrest guide rod, a male connector assembly, a right plastic guide sleeve, a left plastic guide sleeve, a frame crossbeam, a female connector assembly, and a self-locking assembly.
[0008] The male connector assembly includes a male connector wire, a male slot fixing component, and a male slot. The male connector wire and the male slot are welded together and then integrally injection molded with the male slot fixing component. The male connector wire passes through the headrest guide rod and is connected to the speaker wiring harness.
[0009] The female connector assembly includes a female plug, a female fixing member, and a female connecting wire. The female connecting wire and the female plug are welded together and then integrally injection molded with the female fixing member. The female connecting wire passes through the self-locking assembly and connects to the seat wiring harness to provide power. The top of the female fixing member has three snap-fit structures arranged in a circular pattern.
[0010] The right plastic guide sleeve and the left plastic guide sleeve pass through the mounting holes of the frame beam and are snapped onto the frame beam. The bottom end of the right plastic guide sleeve is provided with a square hole.
[0011] The self-locking assembly includes a reset compression spring, a reset tension spring, a locking buckle, and a fixing base. The locking buckle includes a hook structure, a rib, a locking mechanism, and a sliding rib. The fixing base includes a sliding groove, a compression spring groove, and a hook mechanism. The sliding rib matches and locks with the sliding groove. One end of the reset tension spring is connected to the hook structure, and the other end is connected to the hook mechanism. The reset compression spring is pressed into the compression spring groove from above. The female connector assembly is located inside the self-locking assembly. The outer wall of the female end fixing member has three circularly distributed grooves, which match and lock with the rib.
[0012] Preferably, the headrest body is provided with two headrest speakers, which are distributed opposite to each other.
[0013] Preferably, the headrest guide rod is located on one side of the headrest body and connected to the headrest body. The headrest guide rod has a hollow structure inside and an open structure at the bottom. The headrest guide rod has threads inside.
[0014] Preferably, the male end slot fixing member is inserted into the headrest guide rod and fixedly connected to the end of the headrest guide rod, and the female end fixing member is snapped and fixed to the male end slot fixing member.
[0015] Preferably, the right plastic guide sleeve and the left plastic guide sleeve are slidably connected to the headrest guide rod.
[0016] Preferably, both the lower ends of the right plastic guide sleeve and the left plastic guide sleeve are provided with buckles, which are matched and engaged with the locking buckles in the self-locking assembly.
[0017] Preferably, when the headrest needs to be adjusted downwards, pressing down on the headrest body causes the female head connection assembly to move downwards. The inclined surface of the female end fixing member presses against the inclined surface of the three locking buckles, causing the three locking buckles to move outwards along the sliding groove of the fixed base. The locking mechanism at the upper end of the three locking buckles disengages from the three square holes at the bottom end of the right plastic guide sleeve, thus unlocking the adjustment. Continuing to press down on the headrest body causes the self-locking assembly to move along with it. After the three locking mechanisms disengage from the bottom end of the right plastic guide sleeve, the three locking buckles, under the restoring force of the three reset springs, move inwards along the sliding groove of the fixed base to reset. At this point, the self-locking assembly has completely disengaged from the right and left plastic guide sleeves, allowing the headrest body to be freely adjusted up and down.
[0018] Preferably, when the music headrest needs to be disassembled, the headrest body is adjusted upwards, and the self-locking component moves upwards to contact the bottom end of the right plastic guide sleeve. The headrest body is then adjusted upwards further, and the three locking buckles, under the pressure of the bottom end of the right plastic guide sleeve, move outwards along the groove of the fixing base until they engage with the three square holes at the bottom end of the right plastic guide sleeve. At this point, the self-locking component and the right plastic guide sleeve are fixedly connected. The headrest body is then adjusted upwards further, and the male end slot fixing member presses against the buckle structure of the female end fixing member, causing it to deform inwards. This causes the male connector assembly to disengage from the female connector assembly, completing the disassembly of the music headrest assembly.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] 1. The self-locking and self-unlocking device for quick insertion and removal of the music headrest provided by this utility model adopts a brand-new motion mechanism and return spring method. The self-locking and fixing of the seat end connector can be achieved by simply operating the music headrest body upward, thereby completing the quick removal of the headrest. The self-unlocking of the seat end connector can be achieved by operating the music headrest body downward, allowing for headrest adjustment. It is convenient to install and operate, and its structural dimensions are not limited by changes in stroke. The mechanism has high reliability, versatility, and economy.
[0021] 2. The self-locking and self-unlocking device for quick insertion and removal of the music headrest provided by this utility model ensures that the electrical components remain in a fixed connection state during the headrest height adjustment process, with no relative movement, stable electrical signals, and are not easily affected by moisture and dust in the vehicle interior environment.
[0022] 3. The music headrest quick-plug self-locking and self-unlocking device provided by this utility model has a self-locking structure that can unlock itself without the need for external force squeezing of the headrest guide sleeve. The headrest adjustment operation force is stable, the overall mechanism is reliable and durable, and the user experience is good. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is an exploded view of the overall structure of this utility model;
[0025] Figure 3 This is a cross-sectional view of the overall structure of this utility model in its initial assembly state (i.e., the uppermost position of the headrest).
[0026] Figure 4 This is a cross-sectional view of the overall structure of the present invention in the downward adjustment and unlocking state.
[0027] Figure 5 This is a cross-sectional view of the overall structure of the present invention with the headrest adjusted to its lowest position;
[0028] Figure 6 This is a schematic diagram of the female connector assembly structure in this utility model;
[0029] Figure 7 This is a schematic diagram of the reset compression spring and reset tension spring in this utility model;
[0030] Figure 8 This is a schematic diagram of the locking buckle structure in this utility model;
[0031] Figure 9 This is a schematic diagram of the fixed base structure in this utility model;
[0032] Figure 10 This is a schematic diagram of the sliding groove, compression spring slot, and hanging mechanism in this utility model.
[0033] In the diagram: 1. Headrest body; 2. Headrest speaker; 3. Speaker wiring harness; 4. Headrest guide rod; 5. Male connector assembly; 6. Male connector cable; 7. Male slot fixing piece; 8. Male slot; 9. Right side plastic guide sleeve; 10. Left side plastic guide sleeve; 11. Frame beam; 12. Female connector assembly; 13. Female plug; 14. Female fixing piece; 141. Groove; 142. Snap-fit structure; 15. Female connector cable; 16. Reset spring; 17. Self-locking assembly; 18. Reset tension spring; 19. Locking buckle; 191. Hanging structure; 192. Protruding rib; 193. Snap-fit mechanism; 194. Sliding rib; 20. Fixed base; 201. Slide groove; 202. Spring slot; 203. Hanging mechanism. Detailed Implementation
[0034] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0035] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0036] 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.
[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 do not 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0039] Please see Figures 1 to 10This utility model provides a technical solution: a self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest, including a headrest body 1, a headrest speaker 2, a speaker wiring harness 3, a headrest guide rod 4, a male connector assembly 5, a right-side plastic guide sleeve 9, a left-side plastic guide sleeve 10, a frame crossbeam 11, a female connector assembly 12, and a self-locking assembly 17; the male connector assembly 5 includes a male end connector 6, a male end slot fixing piece 7, and a male end slot 8. The male end connector 6 and the male end slot 8 are welded together and integrally injection molded with the male end slot fixing piece 7. The male end connector 6 passes through the headrest guide rod 4 and connects to the speaker wiring harness 3; the female connector assembly 12 includes a female end plug 13, a female end fixing piece 14, and a female end connector 15. The female end connector 15 and the female end plug 13 are welded together and integrally injection molded with the female end fixing piece 14. The female end connector 15 passes through the self-locking assembly 17 and connects to the seat wiring harness to provide power. The top of the female end fixing piece 14 has three... A ring-shaped snap-fit structure 142; the right plastic guide sleeve 9 and the left plastic guide sleeve 10 are snap-fitted onto the frame beam 11 after passing through the mounting holes of the frame beam 11, and the bottom end of the right plastic guide sleeve 9 is provided with a square hole; the self-locking assembly 17 includes a reset compression spring 16, a reset tension spring 18, a locking buckle 19 and a fixed base 20, the locking buckle 19 includes a hook structure 191, a protruding rib 192, a snap-fit mechanism 193 and a sliding rib 194, and the fixed base 20 includes a sliding rib 194. The groove 201, the spring slot 202, and the hooking mechanism 203 are connected. The sliding rib 194 is matched and hooked with the groove 201. One end of the reset spring 18 is connected to the hooking structure 191, and the other end is connected to the hooking mechanism 203. The reset spring 16 is pressed into the spring slot 202 from the top. The female head connecting assembly 12 is located inside the self-locking assembly 17. The outer wall of the female end fixing member 14 has three circular grooves 141, which are matched and hooked with the rib 192.
[0040] Furthermore, the male end slot fixing member 7 is inserted into the headrest guide rod 4 and fixedly connected to the end of the headrest guide rod 4, and the female end fixing member 14 is snapped and fixed to the male end slot fixing member 7.
[0041] Furthermore, the right plastic guide sleeve 9 and the left plastic guide sleeve 10 are slidably connected to the headrest guide rod 4.
[0042] Furthermore, both the lower ends of the right plastic guide sleeve 9 and the left plastic guide sleeve 10 are provided with buckles, which are matched and engaged with the locking buckle 19 in the self-locking assembly 17.
[0043] In this embodiment, two headrest speakers 2 are provided inside the headrest body 1;
[0044] The headrest guide rod 4 is located on one side of the headrest body 1 and connected to the headrest body 1. The headrest guide rod 4 has a hollow structure inside, with an open structure at the bottom and an internal thread or groove. The male connector assembly 5 includes a male connector 6, a male slot fixing member 7, and a male slot 8. The upper end of the male slot fixing member 7 is inserted into the headrest guide rod 4 and connected and fixed to the end of the headrest guide rod 4, and is detachable. The female connector assembly 12 includes a female plug 13, a female fixing member 14, and a female connector 15. The male connector 6 passes through the hollow headrest guide rod 4 and is connected to the headrest speaker 2. The upper end of the female fixing member 14 is snapped and fixed to the male slot fixing member 7, and is detachable. The female connector 15 passes through the self-locking assembly 17 and is connected to the seat wiring harness to provide power.
[0045] The self-locking assembly 17 includes a fixed base 20, a locking buckle 19, a return tension spring 18, and a return compression spring 16;
[0046] The side of the fixed base 20 is provided with a slide groove 201 for the installation and sliding of the locking buckle 19, and the bottom of the fixed base 20 is provided with a spring groove 202 for the reset spring 16 to be limited. The bottom surface of the inner wall of the fixed base 20 is also provided with a hooking mechanism 203 for the reset tension spring 18 to be connected.
[0047] The plastic guide sleeve includes a right plastic guide sleeve 9 and a left plastic guide sleeve 10. The plastic guide sleeve is fixed on the frame beam 11. The inside of the plastic guide sleeve is hollow and it is in contact with the headrest guide rod 4. When adjusting the height of the headrest body 1, the headrest guide rod 4 slides relative to it. The lower end of the plastic guide sleeve is provided with a square hole to connect with the locking mechanism 193 in the locking buckle 19, and it is detachable.
[0048] When the headrest is in its highest position:
[0049] Pass the right plastic guide sleeve 9 and the left plastic guide sleeve 10 through the mounting holes of the frame beam 11 and snap them onto the frame beam 11. Hang one end of the return spring 18 onto the hooking structure 191 of the locking buckle 19, and insert the locking buckle 19 into the slide groove 201 of the fixed base 20 from the side. Solid grease is pre-coated into the slide groove 201 of the fixed base 20 to reduce resistance. At this time, the other end of the return spring 18 is fixed to the hooking mechanism 203 in the fixed base 20 for fixed connection. Repeat the above operation twice to assemble the self-locking assembly 17. Then press the return pressure spring 16 into the pressure spring slot 202 inside the fixed base 20 from the top, and press the female connector assembly 12 into the self-locking mechanism from the top. Within component 17, the female connector component 12 is prevented from dislodging by three locking buckles 19. The three grooves 141 on the female end fixing member 14 and the protruding ribs 192 of the three locking buckles 19 provide anti-rotation limiting. Then, it is secured by the three square holes at the bottom of the right-side plastic guide sleeve 9, which are inserted from bottom to top by the three locking buckles 19. Next, the male connector wire 6 on the male connector component 5 passes through the headrest guide rod 4 and connects to the speaker wiring harness 3. The male connector component 5 is connected and secured to the headrest guide rod 4 by threads or snap-fit. It is then inserted into the right-side plastic guide sleeve 9 and secured and limited by the male end slot fixing member 7 at the bottom and the female end fixing member 14, completing the assembly of all the above components.
[0050] When the headrest needs to be adjusted downwards, press down on the headrest body 1. The female connector 12 moves down and presses the inclined surface of the three locking buckles 19 through the inclined surface of the side of the female end fixing piece 14. The three locking buckles 19 move outwards along the slide groove 201 of the fixed base 20. The locking mechanism 193 at the upper end of the three locking buckles 19 disengages from the three square holes at the bottom end of the right plastic guide sleeve 9, realizing adjustment and unlocking. Continue to press down on the headrest body 1. The self-locking component 17 will move along with it. After the locking mechanism 193 in the three locking buckles 19 disengages from the bottom end of the right plastic guide sleeve 9, the three locking buckles 19 move inwards along the slide groove 201 of the fixed base 20 under the restoring force of the three reset springs 18. At this point, the self-locking component 17 has completely disengaged from the plastic guide sleeve, and the headrest can be adjusted up and down freely. The self-locking component 17 moves along with it. During the process, the male connector 5 and the female connector 12 always remain in a locked and fixed state without relative movement.
[0051] When the music headrest needs to be disassembled, adjust the headrest body 1 upwards. The self-locking component 17 moves upwards and contacts the bottom of the right plastic guide sleeve 9. Continue to adjust the headrest upwards. The three locking buckles 19 move outwards along the slide groove 201 of the fixed base 20 by the squeezing action of the bottom of the right plastic guide sleeve 9 until they are inserted into the three square holes at the bottom of the right plastic guide sleeve 9. At this time, the self-locking component 17 and the right plastic guide sleeve 9 form a fixed connection. Continue to adjust the headrest body 1 upwards. The male end slot fixing component 7 squeezes the snap-fit structure 142 of the female end fixing component 14, causing it to deform inwards, causing the male head connection component 5 to separate from the female head connection component 12, thus completing the disassembly of the music headrest assembly. During this process, the self-locking component 17 and the right plastic guide sleeve 9 always remain in a fixed connection. When the music headrest needs to be installed, repeat the above assembly process.
[0052] This utility model adopts a self-locking and self-unlocking device for quick insertion and removal of music headrests as described above. Compared with the quick-release music headrests currently on the market, it is more convenient to operate. During the headrest height adjustment process, the electrical components always remain in a fixed connection state without relative movement. It is not easily affected by moisture and dust in the car environment. The electrical signal is stable, the adjustment operation force is stable, the overall mechanism is reliable and durable, and it is highly economical.
[0053] For further details, please refer to Figure 1 The headrest body 1 is equipped with two headrest speakers 2, which are distributed opposite to each other.
[0054] In this embodiment, the headrest speaker 2 is used to play music.
[0055] Furthermore, the headrest guide rod 4 is located on one side of the headrest body 1 and connected to the headrest body 1. The headrest guide rod 4 has a hollow structure inside and an open structure at the bottom. The headrest guide rod 4 has threads inside.
[0056] In this embodiment, the headrest guide rod 4 has a hollow internal structure and an open bottom with internal threads or a slot. The male connector 6 on the male connector assembly 5 passes through the headrest guide rod 4 and connects to the speaker wiring harness 3. The male connector assembly 5 is connected and fixed to the headrest guide rod 4 by threads or snap-fit.
[0057] Working principle and usage process of this utility model:
[0058] When the headrest needs to be adjusted downwards, press down on the headrest body 1. The female connector 12 moves down and presses the inclined surface of the three locking buckles 19 through the inclined surface of the side of the female end fixing piece 14. The three locking buckles 19 move outwards along the slide groove 201 of the fixed base 20. The locking mechanism 193 at the upper end of the three locking buckles 19 disengages from the three square holes at the bottom end of the right plastic guide sleeve 9, realizing adjustment and unlocking. Continue to press down on the headrest body 1. The self-locking component 17 will move along with it. After the locking mechanism 193 in the three locking buckles 19 disengages from the bottom end of the right plastic guide sleeve 9, the three locking buckles 19 move inwards along the slide groove 201 of the fixed base 20 under the restoring force of the three reset springs 18. At this point, the self-locking component 17 has completely disengaged from the plastic guide sleeve, and the headrest can be adjusted up and down freely. The self-locking component 17 moves along with it. During the process, the male connector 5 and the female connector 12 always remain in a locked and fixed state without relative movement.
[0059] When the music headrest needs to be disassembled, adjust the headrest body 1 upwards. The self-locking component 17 moves upwards and contacts the bottom end of the right plastic guide sleeve 9. Continue to adjust the headrest upwards. The three locking buckles 19 move outwards along the slide groove 201 of the fixed base 20 by the squeezing action of the bottom end of the right plastic guide sleeve 9 until they are engaged in the three square holes at the bottom end of the right plastic guide sleeve 9. At this time, the self-locking component 17 and the right plastic guide sleeve 9 are fixedly connected. Continue to adjust the headrest body 1 upwards. The male end slot fixing component 7 squeezes the snap-fit structure 142 of the female end fixing component 14, causing it to deform inwards. This causes the male head connection component 5 to separate from the female head connection component 12, completing the disassembly of the music headrest assembly. During this process, the self-locking component 17 and the right plastic guide sleeve 9 remain fixedly connected. When the music headrest needs to be installed, repeat the above assembly process.
[0060] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest, characterized in that: It includes a headrest body (1), a headrest speaker (2), a speaker wiring harness (3), a headrest guide rod (4), a male connector assembly (5), a right plastic guide sleeve (9), a left plastic guide sleeve (10), a frame beam (11), a female connector assembly (12), and a self-locking assembly (17). The male connector assembly (5) includes a male connector (6), a male slot fixing component (7), and a male slot (8). The male connector (6) and the male slot (8) are welded together and integrally injection molded with the male slot fixing component (7). The male connector (6) passes through the headrest guide rod (4) and is connected to the speaker wiring harness (3). The female connector assembly (12) includes a female plug (13), a female fixing member (14), and a female connecting line (15). The female connecting line (15) and the female plug (13) are welded together and integrally injection molded with the female fixing member (14). The female connecting line (15) passes through the self-locking assembly (17) and connects to the seat wiring harness to achieve power supply. The top of the female fixing member (14) is provided with three snap-fit structures (142) arranged in a circular shape. The right plastic guide sleeve (9) and the left plastic guide sleeve (10) are connected to the frame beam (11) by snapping through the mounting hole of the frame beam (11). The bottom end of the right plastic guide sleeve (9) is provided with a square hole. The self-locking assembly (17) includes a return spring (16), a return tension spring (18), a locking buckle (19), and a fixed base (20). The locking buckle (19) includes a hook structure (191), a protruding rib (192), a snap-fit mechanism (193), and a sliding rib (194). The fixed base (20) includes a groove (201), a spring slot (202), and a hook-fit mechanism (203). The sliding rib (194) matches and snaps into the groove (201). Then, one end of the reset spring (18) is connected to the hook structure (191), and the other end is connected to the hook mechanism (203). The reset compression spring (16) is pressed into the compression spring slot (202) from the top. The female head connection assembly (12) is located inside the self-locking assembly (17). The outer wall of the female end fixing member (14) has three grooves (141) distributed in a circular shape. The grooves (141) are matched and engaged with the protruding rib (192).
2. The self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest according to claim 1, characterized in that: The headrest body (1) is provided with two headrest speakers (2) inside, and the two headrest speakers (2) are distributed opposite to each other.
3. The self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest according to claim 1, characterized in that: The headrest guide rod (4) is located on one side of the headrest body (1) and connected to the headrest body (1). The headrest guide rod (4) has a hollow structure inside and an open structure at the bottom. The headrest guide rod (4) has a thread inside.
4. The self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest according to claim 1, characterized in that: The male end slot fixing member (7) is inserted into the headrest guide rod (4) and fixedly connected to the end of the headrest guide rod (4), and the female end fixing member (14) is snapped and fixed to the male end slot fixing member (7).
5. The self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest according to claim 1, characterized in that: The right plastic guide sleeve (9) and the left plastic guide sleeve (10) are slidably connected to the headrest guide rod (4).
6. The self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest according to claim 5, characterized in that: Both the lower ends of the right plastic guide sleeve (9) and the left plastic guide sleeve (10) are provided with buckles, which are matched and engaged with the locking buckle (19) in the self-locking assembly (17).
7. The self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest according to claim 1, characterized in that: When the headrest needs to be adjusted downwards, press down on the headrest body (1). The female head connection assembly (12) moves down, and the inclined surface of the side of the female end fixing piece (14) presses against the inclined surface of the three locking buckles (19). The three locking buckles (19) move outwards along the slide groove (201) of the fixed base (20). The locking mechanism (193) at the upper end of the three locking buckles (19) disengages from the three square holes at the bottom end of the right plastic guide sleeve (9) to achieve adjustment and unlocking. Continue pressing the headrest body. (1) The self-locking component (17) will move together and move down until the three locking mechanisms (193) are disengaged from the bottom of the right plastic guide sleeve (9). Under the restoring force of the three reset springs (18), the three locking buckles (19) move inward along the slide groove (201) of the fixed base (20) and reset. At this point, the self-locking component (17) has completely disengaged from the right plastic guide sleeve (9) and the left plastic guide sleeve (10) and can freely adjust the headrest body (1) up and down.
8. The self-locking and self-unlocking device for quick insertion and removal of a car seat music headrest according to claim 1, characterized in that: When the music headrest needs to be disassembled, the headrest body (1) is adjusted upwards. The self-locking component (17) moves upwards to contact the bottom end of the right plastic guide sleeve (9). The headrest body (1) is then adjusted upwards again. The three locking buckles (19) are pushed outwards along the slide groove (201) of the fixed base (20) by the pressure of the bottom end of the right plastic guide sleeve (9) until they are inserted into the three square holes at the bottom end of the right plastic guide sleeve (9). At this time, the self-locking component (17) and the right plastic guide sleeve (9) are fixedly connected. The headrest body (1) is then adjusted upwards again. The male end slot fixing component (7) presses the snap-fit structure (142) of the female end fixing component (14) to deform it inwards, causing the male head connection component (5) to separate from the female head connection component (12), thus completing the disassembly of the music headrest assembly.