Quick-release structure, music headrest and seat

Abstract

The utility model relates to the field of car headrest, concretely relates to a quick detach structure, music headrest and seat, including headrest rod guide bush, first plug connector and the second plug connector of sliding setting in the headrest rod guide bush, first plug connector and second plug connector can be inserted together and can separate under the action of external force, the lateral wall of headrest rod guide bush is radially movable and is equipped with the limiting block for acting on the second plug connector, and the elastic member is connected on the limiting block, and the first guide slope and second guide slope are equipped on the limiting block, and the second guide slope is located above the first guide slope, the resistance surface for hindering the second plug connector to move upwards is equipped in the headrest rod guide bush. The scheme solves the problem that the headrest cannot be adjusted in the prior art, after the separation of first plug connector and second plug connector, the second plug connector cannot fall down, and when first plug connector and second plug connector begin to be inserted, the second plug connector will not move downwards and be smoothly connected with first plug connector.

Description

Technical Field

[0001] This utility model relates to the field of automotive headrests, specifically to a quick-release structure, a music headrest, and a seat. Background Technology

[0002] Current car seats are equipped with music headrests. The headrest rod is inserted into the seat, and a wiring harness is located inside the headrest rod. This wiring harness connects to electronic components inside the seat, thus electrically connecting the seat and the music headrest. However, in this technology, the wiring harness is a single, continuous unit that cannot be plugged in or unplugged. This prevents the music headrest from being easily and independently removed. If the music headrest is forcibly pulled upwards from the seat, the wiring harness may be pulled out as well, potentially breaking and damaging it.

[0003] To address the aforementioned issues, existing technology divides the entire wiring harness into a headrest harness and a seat harness. The headrest harness connects to a first connector, and the seat harness connects to a second connector. The first and second connectors are detachably connected. The first connector is mounted on the headrest rod of the headrest, and the second connector is mounted inside the seat. When the headrest rod is inserted into the seat, the first and second connectors engage, thus connecting the headrest harness to the seat harness. When the headrest is removed from the seat, the first and second connectors separate, disconnecting the headrest harness from the seat harness, allowing the headrest to be removed.

[0004] However, in the existing technology, after the first and second connectors are plugged in and fixed, the connected first and second connectors cannot be adjusted vertically, thus making it impossible to adjust the height of the headrest. If the second connector can move vertically inside the seat, a challenge arises in ensuring that the second connector does not fall off and remains fixed in its original position after the first connector separates from the second connector. Simultaneously, a second challenge arises in ensuring that the second connector does not move downwards and smoothly connects with the first connector when the first connector begins to move towards the second connector for insertion. Utility Model Content

[0005] The present invention aims to provide a quick-disassembly structure, a music headrest, and a seat to solve the problem that the headrest cannot be height-adjusted in the prior art. At the same time, it ensures that after the first connector and the second connector are separated, the second connector cannot fall downwards, and when the first connector and the second connector are first plugged in, the second connector will not move downwards and can be smoothly connected with the first connector.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quick-disassembly structure, comprising a headrest rod guide sleeve, a first connector that can be connected to the headrest rod, and a second connector that can slide within the headrest rod guide sleeve; the first connector and the second connector can be inserted into each other and can be separated under external force. The outer wall of the headrest rod guide sleeve is fixedly provided with a receiving part, and the receiving part has a receiving cavity. The receiving cavity is connected to the inside of the headrest rod guide sleeve. The receiving part is covered by a cover to seal the receiving cavity. A threaded connector is connected between the cover and the receiving part. A limiting block for interacting with the second plug is radially movable in the receiving cavity. An elastic element is connected to the limiting block. The elastic element provides a force for the limiting block to move inward toward the inside of the headrest rod guide sleeve. The limiting block has a first guide slope and a second guide slope. The second guide slope is located above the first guide slope. Both the first and second guide slopes are located inside the headrest rod guide sleeve. The top end of the first guide slope and the bottom end of the second guide slope are both closer to the center line of the headrest rod guide sleeve than the other end. The headrest rod guide sleeve is provided with a stop surface to prevent the second connector from moving upward. The stop surface is located above the limit block.

[0007] The principle and advantages of this solution are as follows: the first connector is installed on the headrest rod. When the headrest rod is inserted into the seat, the first connector and the second connector are plugged into each other, thereby realizing the electrical connection between the first connector and the second connector. The wiring harness on the headrest and the wiring harness inside the seat are connected together.

[0008] Since the second connector can slide within the headrest rod guide sleeve, when the headrest height is adjusted, the first and second connectors connected together slide vertically within or below the headrest rod guide sleeve, and the first and second connectors connected together will not affect the height adjustment of the headrest rod.

[0009] When the headrest needs to be moved upwards to remove it from the seat, the headrest is moved upwards, and the headrest rod moves upwards within the headrest rod guide sleeve. The first and second connectors, which are connected together, move to the first guide ramp. The second connector slides relative to the first guide ramp, and pushes the first guide ramp. The limiting block moves away from the second connector, and the limiting block applies force to the elastic element. The limiting block does not obstruct the upward movement of the second connector. The second connector moves above the limiting block, and then abuts against the stop surface. The second connector can no longer move upwards. The first and second connectors separate from each other under the external force of the headrest rod moving upwards, and the headrest rod can be removed from the seat.

[0010] After the headrest bar is removed, the second connector is located above the limiting block, which prevents the second connector from moving downwards, thus keeping the second connector in its original position to await connection with the first connector next time.

[0011] When the headrest bar is inserted into the seat again, the first connector moves downward with the headrest bar. The first connector moves to the second connector and the first connector connects with the second connector. As the headrest continues to be pushed downward, the second connector slides relative to the second guide slope. The second connector pushes the second guide slope, and the limiting block moves away from the second connector. The limiting block applies force to the elastic element. The limiting block does not hinder the downward movement of the second connector. The second connector moves below the limiting block. At this time, as the headrest moves, the first and second connectors that are connected also move vertically.

[0012] In summary, this solution offers the following beneficial effects: 1. In this design, the first and second connectors can be plugged together. When the headrest rod is inserted into the seat, the first and second connectors automatically connect, making the connection convenient. When the headrest rod is removed, the first and second connectors separate under external force, thus achieving quick disassembly of the headrest without the wiring harness affecting the disassembly.

[0013] 2. When the headrest is height adjusted, the first and second connectors can move together and are plugged into each other without separating. The first and second connectors can be stably connected, thus ensuring smooth height adjustment of the headrest and solving the problem of the headrest being unable to be height adjusted.

[0014] 3. After the first and second connectors separate, the second connector is positioned above the limiting block. The limiting block prevents the second connector from moving downwards, thus preventing it from falling. The second connector remains in its original position, awaiting the next insertion with the first connector. During the next insertion, the limiting block provides downward resistance to the second connector, facilitating a stable connection between the first and second connectors and preventing the second connector from falling before the connection is secure. Once the first and second connectors are properly connected, increasing the downward force on the headrest causes the second connector to slide relative to the second guide surface. The limiting block moves away from the second connector, thus allowing it to move downwards.

[0015] 4. The first guide slope is designed so that when the first connector and the second connector move upward, the second connector slides relative to the first guide slope, thereby causing the limiting block to move away from the second connector. The limiting block will not provide significant resistance to the upward movement of the second connector, thus preventing the first connector and the second connector from separating before the second connector moves above the limiting block.

[0016] 5. The cover is placed on the receiving part to seal the receiving cavity and prevent the limiting block from falling out of the receiving cavity. The threaded connector connects and fixes the cover and the receiving part together, so that the connection between the cover and the receiving part is stable, the cover will not open, and the cover is stably placed on the receiving part.

[0017] Preferably, as an improvement, the side of the second connector is provided with a third guide slope that can slide and engage with the first guide slope.

[0018] Therefore, by setting a third guide slope on the second connector, when the headrest rod moves upward, the third guide slope and the first guide slope will slide relative to each other, which will make it easier to push the limiting block to move. This will allow the limiting block to avoid the upward movement of the second connector, and the resistance of the limiting block to the upward movement of the second connector will be small. The first connector and the second connector will not easily separate, which will greatly prevent the first connector and the second connector from separating before the second connector moves above the limiting block.

[0019] Preferably, as an improvement, the length of the first guide ramp is greater than the length of the second guide ramp; the acute angle between the first guide ramp and the side wall of the headrest rod guide sleeve is smaller than the acute angle between the second guide ramp and the side wall of the headrest rod guide sleeve.

[0020] Therefore, the slope of the second guide ramp (the acute angle between the second guide ramp and the side wall of the headrest rod guide sleeve) is greater than that of the first guide ramp (the acute angle between the first guide ramp and the side wall of the headrest rod guide sleeve). This ensures that when the second connector moves downward, the limiting block provides greater resistance to the second connector, making it less likely for the limiting block and the second connector to slip relative to each other. The limiting block is less likely to avoid the second connector, preventing it from being pushed below the limiting block before the first connector is properly connected. This helps ensure a stable connection between the first and second connectors. Conversely, the slope of the first guide ramp is smaller, and its inclination relative to the side wall of the headrest rod guide sleeve is gentler. When the second connector moves upward, it easily pushes the limiting block to move and avoid it, greatly preventing the second connector from separating from the first connector before it reaches above the limiting block.

[0021] Preferably, as an improvement, a metal wear-resistant plate is fixedly disposed on the outer wall of the second connector, at least located on the third guide slope. Thus, the metal wear-resistant plate can improve the wear resistance of the third guide slope surface on the second connector, thereby increasing the service life of the second connector.

[0022] Preferably, as an improvement, the headrest rod guide sleeve includes a lower guide sleeve, an upper guide sleeve, and a connecting sleeve, with the upper and lower guide sleeves connected by the connecting sleeve. Thus, the headrest rod guide sleeve is assembled from three parts: the upper guide sleeve, the lower guide sleeve, and the connecting sleeve. These three parts are independent and can be manufactured separately (e.g., using different molds). Compared to manufacturing the headrest rod guide sleeve as a whole, this reduces design and manufacturing complexity; the three parts can be assembled separately after manufacturing.

[0023] Preferably, as an improvement, the connecting sleeve is made of metal.

[0024] This application also includes the following: a music headrest, comprising a headrest rod and any of the above-mentioned quick-release structures; a first connector is installed at the end of the headrest rod; the metal rod and the second connector are detachably connected by a snap-fit ​​mechanism.

[0025] Therefore, by applying the aforementioned quick-release structure to the headrest rod, the headrest can be disassembled, solving the problems in the background technology. Simultaneously, after the first and second connectors are inserted together, the second connector and the metal rod are engaged, and the metal rod provides a certain degree of fixation for the second connector, thereby improving the stability of the insertion between the second and first connectors. During the vertical movement of the headrest rod, the first and second connectors are less likely to separate. Furthermore, when the headrest rod moves upward and the second connector slides relative to the limiting block, the second connector is less likely to fall off the first connector, ensuring that the second connector can move above the limiting block.

[0026] Preferably, as an improvement, the side wall of the headrest rod is provided with a slot, and a limiting spring is fixed on the second connector for engaging with the slot. Thus, by the limiting spring engaging in the slot, the second connector and the headrest rod are connected.

[0027] Preferably, as an improvement, a metal sleeve is fixedly provided on the first connector, and the metal sleeve has a protruding clip. The first connector is inserted into the end of the headrest rod, and the clip is engaged in a slot. Thus, by fixing the metal sleeve with the clip onto the first connector, and inserting the first connector into the headrest rod, the metal sleeve also enters the headrest rod, and the clip is engaged in the slot, thereby securing the first connector and the headrest rod, preventing the first connector from easily falling off. In this way, the slot can simultaneously secure both the first and second connectors, eliminating the need for multiple slots to individually secure the first and second connectors, resulting in a simple and ingenious structural design.

[0028] Preferably, as an improvement, a threaded connector is used to connect the limiting spring and the second connector. Thus, the threaded connector achieves a fixed connection between the limiting spring and the second connector.

[0029] Preferably, as an improvement, the threaded connection is a screw or bolt.

[0030] This application also includes the following solutions: a seat, comprising any of the quick-release structures described above; or... Musical headrests, including any of the above. Attached Figure Description

[0031] Figure 1 This is a schematic diagram showing the headrest rod being inserted into the headrest rod guide sleeve.

[0032] Figure 2 This is a schematic diagram of the headrest rod being inserted into the upper and lower guide sleeves (the connecting sleeve is not shown in the diagram).

[0033] Figure 3 This is a schematic diagram of the connecting sleeve.

[0034] Figure 4 This is a schematic diagram showing the second connector connected to the headrest rod.

[0035] Figure 5 This is a schematic diagram of the assembly of the first connector and the headrest rod.

[0036] Figure 6 This is a schematic diagram of the lower guide sleeve.

[0037] Figure 7 for Figure 6 Sectional view of AA. Detailed Implementation

[0038] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: headrest rod 1, slot 11, connecting sleeve 2, snap-fit ​​hole 21, lower guide sleeve 3, connecting section 31, second snap block 32, cover 33, self-tapping screw 34, elastic element 35, limiting block 36, first guide slope 37, second guide slope 38, abutting surface 39, upper guide sleeve 4, first snap block 41, second plug 5, limiting spring 51, snap-fit ​​end 52, third guide slope 53, first plug 6, card 61, and plug hole 62.

[0039] The basic implementation examples are as follows: Figures 1-7 As shown.

[0040] This embodiment discloses a quick-release structure, which is applied to a car seat, specifically to the music headrest of the car seat. Therefore, the quick-release structure in this embodiment is also included in the car seat and the music headrest.

[0041] The structure and principle of the quick-disassembly structure will be introduced in detail below, taking into account specific application scenarios.

[0042] A quick-release structure includes a headrest rod guide sleeve, a first connector 6, and a second connector 5 slidably disposed within the headrest rod guide sleeve.

[0043] The headrest rod guide sleeve includes an upper guide sleeve 4, a lower guide sleeve 3, and a connecting sleeve 2 that connects the upper guide sleeve 4 and the lower guide sleeve 3. In this embodiment, the connecting sleeve 2 is made of metal, while the upper guide sleeve 4 and the lower guide sleeve 3 are made of plastic. Figure 3 As shown, the connecting sleeve 2 has snap-fit ​​holes 21 on its side. The snap-fit ​​holes 21 are close to the two ends of the connecting sleeve 2, and are used for... Figure 2 As shown, the outer side wall of the bottom connecting section of the upper guide sleeve 4 is provided with a first locking block 41, and the outer side wall of the top connecting section 31 of the lower guide sleeve 3 is provided with a second locking block 32. The bottom connecting section of the upper guide sleeve 4 and the top connecting section 31 of the lower guide sleeve 3 can be inserted from the top and bottom of the connecting sleeve 2, respectively. The first locking block 41 and the second locking block 32 are respectively locked in the corresponding locking holes 21, thereby realizing the connection of the upper guide sleeve 4, the connecting sleeve 2 and the lower guide sleeve 3.

[0044] In this embodiment, the first connector 6 is connected to the bottom end of the headrest rod 1. The specific connection method is as follows: combining Figure 5 As shown, the first connector 6 can be inserted into the hole at the bottom end of the headrest rod 1. A slot 11 is provided on the side wall of the bottom end of the headrest rod 1. A metal sleeve is fixed (e.g., glued, snapped, or fixed with screws) on the outer side wall of the first connector 6. A protruding card 61 is provided on the metal sleeve, with the end of the card 61 facing downwards. When the first connector 6 with the metal sleeve is inserted into the end of the headrest rod 1, the card 61 is engaged in the slot 11, with the bottom end of the card 61 abutting against the slot 11, thus achieving the connection between the first connector 6 and the bottom end of the headrest rod 1. With the card 61 engaged in the slot 11, the first connector 6 will not detach from the bottom end of the headrest rod 1. The first connector 6 has a socket 62 for inserting the prong at the top of the second connector 5. The first connector 6 and the second connector 5 are electrically connected by inserting the prong into the socket 62.

[0045] Combination Figure 4As shown, in this embodiment, the top of the second connector 5 is provided with a slot for inserting the headrest rod 1. The headrest rod 1 is inserted into the slot, and the top of the second connector 5 surrounds the bottom of the headrest rod 1. The insertion rod at the top of the second connector 5 is inserted into the insertion hole 62 on the first connector 6. The second connector 5 is provided with a limiting spring piece 51 for engaging with the slot 11. The outer wall of the second connector 5 is provided with a vertical spring piece groove, and the limiting spring piece 51 is installed in the spring piece groove. The bottom end of the limiting spring piece 51 is fixed to the second connector 5 by a screw. The top end of the limiting spring piece 51 is a snap-fit ​​end 52, which snaps into the slot 11, thereby realizing the snap-fit ​​of the headrest rod 1 and the second connector 5. The second connector 5 is stably connected to the bottom of the headrest rod 1. In addition, a third guide slope 53 is also provided on the side of the second connector 5.

[0046] Combination Figure 7 As shown, the lower guide sleeve 3 has a radially movable limiting block 36 on its side wall for acting on the second connector 5. Specifically, the outer side wall of the lower guide sleeve 3 is integrally fixed with a receiving portion, which contains a receiving cavity. The receiving cavity communicates with the interior of the lower guide sleeve 3. The limiting block 36 is located in the receiving cavity, and an elastic element 35, specifically a compression spring, is installed in the receiving cavity. A cover 33 for sealing the receiving cavity is placed on the receiving portion, and the cover 33 is fixed to the receiving portion by a self-tapping screw 34 (which has threads). The compression spring is located between the limiting block 36 and the cover 33. The compression spring applies pressure to the limiting block 36, thereby causing the limiting block 36 to move inwards towards the lower guide sleeve 3. In this embodiment, there are two limiting blocks 36, located on both sides of the lower guide sleeve 3. Of course, other numbers can be used in other embodiments.

[0047] Combination Figure 7 As shown, the limiting block 36 is provided with a first guide slope 37 and a second guide slope 38. The second guide slope 38 is located above the first guide slope 37. Both the first guide slope 37 and the second guide slope 38 are located inside the lower guide sleeve 3. The top end of the first guide slope 37 and the bottom end of the second guide slope 38 are both close to the center line of the headrest rod guide sleeve. The length of the first guide slope 37 is greater than the length of the second guide slope 38. The acute angle between the first guide slope 37 and the inner wall of the lower guide sleeve 3 is smaller than the acute angle between the second guide slope 38 and the side wall of the headrest rod guide sleeve. In this embodiment, the acute angle between the first guide slope 37 and the inner wall of the lower guide sleeve 3 is, for example, 15°, and the acute angle between the second guide slope 38 and the inner wall of the lower guide sleeve 3 is, for example, 60°. The corresponding acute angles can be changed according to the actual situation.

[0048] In this embodiment, the third guide slope 53 can slide and engage with the first guide slope 37. Figure 7As shown, in some embodiments, a metal wear-resistant sheet is fixed (e.g., bonded) to the outer side of the second connector 5. The metal wear-resistant sheet covers the third guide slope 53, and the bottom of the metal wear-resistant sheet is bent and extends to the bottom of the second connector 5. In this way, the part of the second connector 5 that contacts the first guide slope 37 and the second guide slope 38 is the metal wear-resistant sheet, which can improve the wear resistance of the second connector 5 and increase its service life.

[0049] The lower guide sleeve 3 is provided with a stop surface 39 to prevent the second connector 5 from moving upward. The stop surface 39 is located above the limiting block 36. By abutting against the top of the second connector 5, the second connector 5 can be prevented from moving upward.

[0050] The specific implementation process is as follows: The first connector 6 is pre-installed in the end of the headrest rod 1. A wire harness is connected to the first connector 6, and the wire harness on the first connector 6 is connected to the electronic components of the music headrest. The second connector 5 is located inside the lower guide sleeve 3. A wire harness is connected to the second connector 5, and the wire harness on the second connector 5 is connected to the electronic components inside the seat.

[0051] Initially, combined Figure 7 As shown, the second connector 5 is located above the limiting block 36. When the headrest is inserted into the seat, the headrest rod 1 first enters the upper guide sleeve 4, and then enters the lower guide sleeve 3. The first connector 6 moves to the second connector 5, and the insertion rod on the second connector 5 is inserted into the insertion hole 62 of the first connector 6. The first connector 6 and the second connector 5 are connected together, thus realizing the electrical connection between the first connector 6 and the second connector 5. At the same time, the locking end 52 of the limiting spring 51 on the second connector 5 is locked in the locking groove 11, thus realizing that the second connector 5 is locked on the headrest rod 1. In this way, the connection between the second connector 5 and the first connector 6 is more stable.

[0052] During the downward movement of the first connector 6 to connect with the second connector 5, the limiting block 36, located below the second connector 5, blocks the second connector 5, preventing it from moving downwards. The second connector 5 can then connect with the first connector 6 while positioned above the limiting block 36. After the first connector 6 and the second connector 5 are connected, if a larger downward force is applied to cause the headrest rod 1 to move downwards, the second connector 5 will move downwards under this force. The bottom of the second connector 5 pushes against the second guide slope 38, and the limiting block 36, under the downward pushing action of the second connector 5, squeezes the elastic element 35. The limiting block 36 then retracts, no longer obstructing the downward movement of the second connector 5. Thus, the headrest rod 1 can move downwards, and the second connector 5 moves below the limiting block 36.

[0053] Since the second connector 5 can move within or even below the lower guide sleeve 3, after the second connector 5 moves below the limiting block 36, when the headrest height is adjusted, the connected first connector 6 and second connector 5 slide vertically below the limiting block 36 of the lower guide sleeve 3, following the headrest rod 1. The connected first connector 6 and second connector 5 will not affect the height adjustment of the headrest rod 1. At the same time, the second connector 5 is secured to the headrest rod 1 by the limiting spring piece 51, and the second connector 5 will not fall off the headrest rod 1.

[0054] When the headrest needs to be moved upwards from the seat, the headrest is moved upwards, and the headrest rod 1 moves upwards. The first connector 6 and the second connector 5, which are connected together, move to the first guide slope 37. The third guide slope 53 on the second connector 5 slides relative to the first guide slope 37. The second connector 5 pushes the first guide slope 37, and the limiting block 36 moves away from the second connector 5. The limiting block 36 applies force to the elastic element 35. The limiting block 36 does not obstruct the upward movement of the second connector 5, and the second connector 5 moves above the limiting block 36. During this process, due to the sliding engagement of the first guide slope 37 and the third guide slope 53, and the small slope of the first guide slope 37, the resistance of the limiting block 36 to the upward movement of the second connector 5 is small. The limiting block 36 can easily move to avoid the upward movement of the second connector 5, and the second connector 5 will not fall off the end of the headrest rod 1 due to the obstruction of the limiting block 36.

[0055] Then, the second connector 5 moves upward along with the headrest rod 1 to above the limiting block 36. The top of the second connector 5 abuts against the stop surface 39, and the second connector 5 can no longer move upward, while the headrest rod 1 continues to move upward. Under the external force of the upward movement of the headrest rod 1, the first connector 6 and the second connector 5 separate from each other, and the locking end 52 of the limiting spring 51 is forcibly disengaged from the slot 11. The second connector 5 remains stationary above the limiting block 36, and the headrest rod 1 can be removed from the seat. The first connector 6 moves upward along with the headrest rod 1 and comes out of the seat.

[0056] After the headrest rod 1 is removed, the second connector 5 is located above the limiting block 36, which prevents the second connector 5 from moving downwards. This keeps the second connector 5 in its original position, ready to connect with the first connector 6 next time. When the headrest rod 1 is inserted into the seat again, the corresponding connection process is performed as described above.

[0057] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A quick-disassembly structure, characterized in that: It includes a headrest rod guide sleeve, a first connector that can be connected to the headrest rod, and a second connector that can slide within the headrest rod guide sleeve; the first connector and the second connector can be inserted into each other and can be separated under the action of external force; The outer wall of the headrest rod guide sleeve is fixedly provided with a receiving part, and the receiving part has a receiving cavity. The receiving cavity is connected to the inside of the headrest rod guide sleeve. The receiving part is covered by a cover to seal the receiving cavity. A threaded connector is connected between the cover and the receiving part. A limiting block for interacting with the second plug is radially movable in the receiving cavity. An elastic element is connected to the limiting block. The elastic element provides a force for the limiting block to move inward toward the inside of the headrest rod guide sleeve. The limiting block has a first guide slope and a second guide slope. The second guide slope is located above the first guide slope. Both the first and second guide slopes are located inside the headrest rod guide sleeve. The top end of the first guide slope and the bottom end of the second guide slope are both closer to the center line of the headrest rod guide sleeve than the other end. The headrest rod guide sleeve is provided with a stop surface to prevent the second connector from moving upward, and the stop surface is located above the limiting block.

2. The quick-disassembly structure according to claim 1, characterized in that: The second connector has a third guide slope on its side that can slide and engage with the first guide slope.

3. The quick-disassembly structure according to claim 1, characterized in that: The length of the first guide ramp is greater than the length of the second guide ramp; the acute angle between the first guide ramp and the side wall of the headrest rod guide sleeve is smaller than the acute angle between the second guide ramp and the side wall of the headrest rod guide sleeve.

4. The quick-disassembly structure according to claim 2, characterized in that: The second connector has a metal wear-resistant plate fixedly disposed on its outer side wall, at least located on the third guide slope.

5. The quick-disassembly structure according to claim 1, characterized in that: The headrest rod guide sleeve includes a lower guide sleeve, an upper guide sleeve, and a connecting sleeve, and the upper guide sleeve and the lower guide sleeve are connected by the connecting sleeve.

6. A music headrest, characterized in that: It includes a headrest rod and a quick-release structure as described in any one of claims 1-5; the first connector is installed at the end of the headrest rod; the headrest rod and the second connector are detachably connected by a snap-fit ​​mechanism.

7. The music headrest according to claim 6, characterized in that: The side wall of the headrest rod is provided with a slot, and the second plug is fixedly provided with a limiting spring for engaging with the slot.

8. The music headrest according to claim 7, characterized in that: A metal sleeve is fixedly provided on the first connector, and the metal sleeve has an outwardly protruding card. The first connector is inserted into the end of the headrest rod, and the card is locked in the slot.

9. The music headrest according to claim 7, characterized in that: A threaded connector is connected between the limiting spring and the second plug.

10. A seat, characterized in that: Includes a quick-disassembly structure as described in any one of claims 1-5; or, Includes the music headrest as described in any one of claims 6-9.

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