Vehicle-mounted detachable structure

Abstract

The present disclosure discloses a detachable structure for vehicle, comprising: a shell comprising a locking protrusion provided with a locking piece limiting groove; a detachable support comprising a support assembly, a button, a locking piece and a compression spring, the support assembly is provided with a straight groove matched with the shape of the locking protrusion, the locking piece is supported in the straight groove by the compression spring, the position and shape of the locking piece are matched with the locking piece limiting groove, when the support assembly moves to the position where the locking piece is aligned with the locking piece limiting groove, the locking piece is clamped into the locking piece limiting groove under the pressure of the compression spring, locking the detachable support and the shell, the button can press back the locking piece to make the locking piece disengage from the locking piece limiting groove. The present embodiment sets the locking piece to be automatically clamped into the locking piece limiting groove under the action of the compression spring, and makes the button press back the locking piece to unlock, without complex mechanisms such as hooks, which can greatly reduce the required structure space for locking, reduce the number of parts and assembly errors, and make the disassembly and assembly operation more simple and reliable.

Description

Technical Field

[0001] This disclosure generally relates to the field of quick-lock structure technology. More specifically, this disclosure relates to a vehicle-mounted detachable structure. Background Technology

[0002] Existing vehicle-mounted detachable structures typically employ a rotatable locking hook for locking. The hook rotates via a pivot to lock and unlock, its movement trajectory being arc-shaped with a line-surface contact with the base. This results in a small locking area, low space utilization, and a large overall size. Furthermore, relying solely on a spring for locking without a physical dead point leads to insufficient locking force, and the hook lever arm is greater than the unlocking pressure arm, making unlocking difficult. Therefore, existing solutions suffer from problems such as requiring large structural space for locking, a large number of parts, and significant accumulation of assembly errors.

[0003] In view of this, there is an urgent need to provide a vehicle-mounted detachable structure in order to reduce the structural space required for locking, and reduce the number of parts and assembly errors. Summary of the Invention

[0004] In order to at least address one or more of the technical problems mentioned above, this disclosure proposes a vehicle-mounted detachable structure.

[0005] This disclosure provides a vehicle-mounted detachable structure, including: a housing with a locking protrusion having a locking member limiting groove; and a detachable bracket including a bracket assembly, a button, a locking member, and a compression spring. The bracket assembly has a straight groove that matches the shape of the locking protrusion. The locking member is supported in the straight groove by the compression spring, and the position and shape of the locking member match the locking member limiting groove. When the bracket assembly moves to the point where the locking member aligns with the locking member limiting groove, the locking member is engaged in the locking member limiting groove under the pressure of the compression spring, locking the detachable bracket to the housing. The button can press back the locking member, causing the locking member to disengage from the locking member limiting groove.

[0006] In some embodiments, the locking element is a ball, and the locking element limiting groove is a ball limiting groove that matches its shape.

[0007] In some embodiments, the locking protrusion is provided with a guide ramp for guiding the locking member to compress the compression spring when the bracket assembly is slidably sleeved to the outside of the locking protrusion.

[0008] In some embodiments, a guide hole is provided in the inner wall of the straight groove, a locking member is partially accommodated in the guide hole, one end of the compression spring abuts against the bottom of the guide hole, and the other end abuts against the locking member, and the guide hole is configured to extend in a direction perpendicular to the surface of the housing plate.

[0009] In some embodiments, a locking channel is further provided in the inner wall of the straight groove, and the button includes a locking pin that is slidably inserted into the locking channel and axially limited in the locking channel to prevent it from coming out.

[0010] In some embodiments, the locking pin further includes a retaining spring, which is engaged with the portion of the locking pin inserted into the locking channel to form an axial limit with the locking channel.

[0011] In some embodiments, the bracket assembly further includes a support baffle and a bracket body, the support baffle being detachably disposed on the bracket body and located at the bottom of the guide hole for supporting the compression spring.

[0012] In some embodiments, the support baffle further includes a locking part, and the locking channel includes a limiting hole, a movable cavity and a locking hole arranged sequentially along the axial direction. The limiting hole and the movable cavity are disposed on the bracket body, and the locking hole is disposed on the locking part. The limiting hole cooperates with the locking pin to limit it radially to prevent shaking. The locking hole limits the locking pin axially to prevent it from falling out. A gap is provided between the movable cavity and the locking pin to reduce friction.

[0013] In some embodiments, the locking protrusion includes a main body portion that protrudes along the thickness direction of the housing plate and a limiting portion that extends perpendicularly to the protrusion direction of the main body portion. The limiting portion has a first mating inclined surface on the side facing the housing, and a corresponding second mating inclined surface is provided in the straight groove. The first mating inclined surface and the second mating inclined surface cooperate and abut against each other along the installation direction of the housing and the detachable bracket to reduce the installation gap.

[0014] In some embodiments, the locking protrusion includes a main body and two limiting portions disposed on opposite sides of the main body.

[0015] With the vehicle-mounted detachable structure provided above, the disclosed embodiment locks the device by automatically engaging it in the locking member limit groove under the action of a compression spring, and unlocks it by pressing the button back onto the locking member. Only linear sliding and pressing actions are required, eliminating the need for complex mechanisms such as locking hooks. This significantly reduces the structural space required for the lock, reduces the number of parts and assembly errors, and makes the disassembly and assembly operations simpler and more reliable. Attached Figure Description

[0016] The above and other objects, features, and advantages of exemplary embodiments of this disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0017] Figure 1 Cross-sectional schematic diagrams of some existing detachable mechanisms are shown; Figure 2 An exemplary top view of a vehicle-mounted detachable structure according to some embodiments of this disclosure is shown; Figure 3 An exemplary top view of a vehicle-mounted detachable structure according to some embodiments of this disclosure is shown; Figure 4 for Figure 3 A partial cross-sectional diagram of line AA; Figure 5 for Figure 3 A partial cross-sectional diagram of the middle BB line; Figure 6 An exemplary perspective view of a vehicle-mounted detachable structure according to some embodiments of this disclosure is shown. Detailed Implementation

[0018] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, not all of them. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0019] It should be understood that the terms “comprising” and “including” used in this disclosure and claims indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0020] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0021] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0022] See Figure 1 , Figure 1The diagram shows cross-sectional schematics of some existing detachable mechanisms. In these mechanisms, the detachable components typically match the end shapes of the components to the corresponding contours of the base assembly. During installation, the pressure of the matching surfaces overcomes the spring force, causing the left and right locking hooks to engage at designated positions on the base. However, this approach has significant drawbacks: relying solely on spring locking without a physical dead point results in insufficient locking force; the hook lever arm is greater than the unlocking pressure arm, making unlocking difficult; and the hooks rotate via a pivot to form a line-surface contact with the base, resulting in a small locking area, low space utilization, and a relatively large overall product size for the same locking capacity.

[0023] This disclosed embodiment provides a vehicle-mounted detachable structure, which locks the device by automatically engaging the locking member in the locking member limiting groove under the action of a compression spring, and unlocks the device by pressing the button back onto the locking member. It only requires linear sliding and pressing actions, eliminating the need for complex mechanisms such as locking hooks, which can significantly reduce the structural space required for locking, reduce the number of parts and assembly errors, and make disassembly and assembly operations simpler and more reliable.

[0024] The specific embodiments disclosed herein will now be described in detail with reference to the accompanying drawings.

[0025] See Figures 2 to 4 , Figure 2 An exemplary top view of a vehicle-mounted detachable structure according to some embodiments of this disclosure is shown, wherein the housing and the detachable bracket are in a separated state. Figure 3 An exemplary top view of a vehicle-mounted detachable structure according to some embodiments of this disclosure is shown, wherein the housing and the detachable bracket are locked together. Figure 4 for Figure 3 A schematic diagram of a partial cross-section of line AA.

[0026] Some embodiments disclosed herein provide a vehicle-mounted detachable structure, including: a housing 10, which includes a locking protrusion 11, the locking protrusion 11 having a locking member limiting groove 12; a detachable bracket 20, which includes a bracket assembly 21, a button 22, a locking member 23, and a compression spring 24, the bracket assembly 21 having a straight groove 210 that matches the shape of the locking protrusion 11, the locking member 23 being supported in the straight groove 210 by the compression spring 24, and the position and shape of the locking member 23 matching the locking member limiting groove 12, when the bracket assembly 21 moves to the point where the locking member 23 aligns with the locking member limiting groove 12, the locking member 23 is engaged in the locking member limiting groove 12 under the pressure of the compression spring 24, locking the detachable bracket 20 to the housing 10; the button 22 can press back the locking member 23, causing the locking member 23 to disengage from the locking member limiting groove 12.

[0027] This vehicle-mounted detachable structure can be used to lock detachable components such as displays inside the vehicle. The housing 10 is typically a fixed component, such as the rear shell of the display screen. The locking protrusion 11 can be integrally formed on the rear shell, or fixedly combined with the rear shell through bolts, protective sleeves, or other means. The detachable bracket 20 connects the rear shell and other relatively fixed objects. It slides along a direction parallel to the surface of the housing 10 via its straight groove 210 and fits onto the outside of the locking protrusion 11. When the bracket assembly 21 is in place, the spring force of the compression spring 24 drives the locking member 23 to automatically engage with the locking member limiting groove 12, achieving quick locking. When disassembly is required, pressing the button 22 pushes the locking member 23 out of the limiting groove, unlocking the bracket and allowing it to slide out in the opposite direction. Thus, locking and unlocking can be completed with only linear sliding and pressing actions, eliminating the need for complex mechanisms such as locking hooks, significantly reducing the structural space required for the locking function components, resulting in a more compact design. It also reduces the number of parts and overall assembly errors, making disassembly and assembly operations simpler and more reliable.

[0028] Further or alternatively, the locking element 23 is a ball, and the locking element limiting groove 12 is a ball limiting groove that matches its shape. The ball can be a steel sphere, and the locking element limiting groove 12 is formed by a perpendicular recess relative to the direction of relative sliding between the housing 10 and the detachable bracket 20. Its outline can be arc-shaped or semi-circular, etc., to provide good guidance for the ball. Using a ball as the locking element 23, its spherical structure can form good rolling contact with the ball limiting groove, thereby reducing the probability of jamming. Similarly, when the straight groove 210 of the bracket assembly 21 slides relative to the locking protrusion 11, the ball can roll relative to the surface of the locking protrusion 11 under the compression of the compression spring 24, thereby reducing the frictional resistance during installation and disassembly. In addition, after the ball is inserted into the limiting groove, the spherical surface of the ball and the surface of the limiting groove form a stable bidirectional limiting due to their shape matching, which can withstand the pull-out force from two directions. Therefore, by setting the locking element 23 as a ball, its easy rolling characteristics can be used to reduce wear and frictional resistance during use. Moreover, since its contact area is smaller than that of the ball limiting groove and the locking protrusion 11, it has a higher tolerance for machining errors, which helps to reduce manufacturing costs.

[0029] See Figure 6 , Figure 6An exemplary perspective view of a vehicle-mounted detachable structure according to some embodiments of this disclosure is shown, with some detachable brackets removed to clearly show the internal structure. In this embodiment, the locking protrusion 11 is provided with a guide ramp 113 for guiding the locking member 23 to compress the spring 24 when the bracket assembly 21 is slidably fitted onto the outside of the locking protrusion 11. The locking protrusion 11 includes a main body portion 111 protruding along the thickness direction of the housing 10 plate surface, and a limiting portion 112 extending perpendicularly to the protruding direction of the main body portion 111. The guide ramp 113 is disposed on the side of the limiting portion 112 facing the sliding direction of the bracket assembly 21 and is inclined towards the housing 10 plate surface. The shape of the guide ramp 113 may be, for example, a chamfer or a slope, or a combination of a ramp and an arc surface. When the bracket assembly 21 slides along the surface of the housing 10, the locking member 23 first contacts the guide ramp 113. The ramp transmits a force perpendicular to the sliding direction to the locking member 23, forcing the locking member 23 to retract along the thickness of the housing 10 against the elastic force of the compression spring 24, thus rolling along the surface of the locking protrusion 11 under the pressure of the compression spring 24. When the bracket assembly 21 continues to slide until the locking member 23 aligns with the locking member limiting groove 12, the compression spring 24 pushes it into the groove. This process eliminates the need for the user to manually press the locking member 23, achieving automatic energy storage and locking of the compression spring 24, thereby simplifying the installation steps and improving the user experience. Those skilled in the art will understand that, although the above describes a scheme in which the locking member 23 is positioned to abut against the surface of the limiting part 112 in a direction away from the surface of the housing 10 plate and slides into the locking member limiting groove 12 during installation and locking, this disclosure does not limit the direction of movement of the locking member 23. For example, the direction of movement of the locking member 23 can be set to be parallel to the surface of the housing 10 plate or tilted relative to the surface of the housing 10 plate, and the setting direction of the button 22 can be adjusted accordingly, as long as the locking member 23 can be inserted into the locking member limiting groove 12.

[0030] See you again Figures 1 to 3In this embodiment, a guide hole 212 is provided in the inner wall of the straight groove 210. The locking member 23 is partially accommodated in the guide hole 212. One end of the compression spring 24 abuts against the bottom of the guide hole 212, and the other end abuts against the locking member 23. The guide hole 212 is configured to extend in a direction perpendicular to the surface of the housing 10. The cross-section of the guide hole 212 can be set as rectangular or circular, etc., and its diameter is slightly larger than the outer diameter of the locking member 23. The guide hole 212 is used to ensure that the locking member 23 can smoothly reciprocate in a direction perpendicular to the surface of the housing 10, while limiting its radial offset and preventing the locking member 23 from jamming or tilting. The compression spring 24 is placed in the guide hole 212, with one end fixed or abutting against the bottom surface of the guide hole 212, and the other end abutting against the locking member 23, so that the locking member 23 is always subjected to a preload force away from the surface of the housing 10. The guide hole 212 provides positioning for the spring and guidance for the elastic element, thereby ensuring stable direction of the locking force and rapid response, and avoiding locking failure due to spring misalignment. By configuring the guide hole 212 to extend in a direction perpendicular to the surface of the housing 10, the spring, locking element 23, button 22, and locking protrusion 11 can all be arranged side by side in a direction perpendicular to the surface of the housing 10, which is more compact in space and facilitates the miniaturization of the device.

[0031] See you again Figure 3 In some embodiments, a locking channel 214 is further provided in the inner wall of the straight groove 210. The button 22 includes a locking pin 221, which is slidably inserted into the locking channel 214 and axially limited within the locking channel 214 to prevent it from coming out. The locking channel 214 can be configured as a through or non-through channel, and its interior can be provided with axial limiting structures such as steps, slots, or limiting rings. After the locking pin 221 is inserted into the locking channel 214, the limiting structure within the locking channel 214 restricts the range of movement of the locking pin 221 along its own axial direction, so that the locking pin 221 can move within the locking channel 214 without completely coming out of the channel. Button 22 is fixed to the exposed end of locking pin 221. When the user presses button 22, locking pin 221 moves to the inside of locking channel 214. After the button 22 is released, locking member 23 pushes button 22 back to reset under the action of compression spring 24. Locking channel 214 prevents button 22 from coming out through its axial limiting function.

[0032] Further or optionally, the locking pin 221 also includes a retaining spring 222, which engages with the portion of the locking pin 221 that is inserted into the locking channel 214 to form an axial limit with the locking channel 214. The retaining spring 222 is typically an elastic retaining spring, and a corresponding groove can be provided on the locking pin 221. In this embodiment, the locking channel 214 is a through channel. When the locking pin 221 is inserted into the locking channel 214, the retaining spring 222 can engage with the groove on the locking pin 221 from its end extending out of the locking channel 214, thereby preventing the locking pin 221 from reversing and disengaging. By using the retaining spring 222, reverse locking can be achieved without additional mounting parts, simplifying the assembly process and overall structure. At the same time, when maintenance and disassembly are required, the button 22 can be easily removed using tools by disassembling the retaining spring 222, reducing maintenance hassles.

[0033] In some embodiments, the bracket assembly 21 further includes a support baffle 215 and a bracket body 211. The support baffle 215 is detachably disposed on the bracket body 211, located at the bottom of the guide hole 212, to support the compression spring 24. The bracket body 211 is the main structural component of the detachable bracket 20, and features such as the straight groove 210 and the guide hole 212 are provided on the bracket body 211. The support baffle 215 can be generally plate-shaped and can be detachably fixed to the bracket body 211 by means of snaps, bolts, etc., and closes the bottom opening of the guide hole 212. One end of the compression spring 24 abuts against the inner side of the support baffle 215 facing the guide hole 212, and the other end abuts against the locking member 23. By setting the detachable support baffle 215, during assembly, the compression spring 24 and locking member 23 can be placed into the guide hole 212 first, and then the support baffle 215 can be installed. In subsequent maintenance or replacement of the compression spring 24, only the support baffle 215 needs to be removed, which reduces production and maintenance costs.

[0034] Further or optionally, the support baffle 215 also includes a locking part, and the locking channel 214 includes a limiting hole 2111, a movable cavity 2112, and a locking hole 2151 arranged sequentially along the axial direction. The limiting hole 2111 and the movable cavity 2112 are disposed on the bracket body 211, and the locking hole 2151 is disposed on the locking part. The limiting hole 2111 cooperates with the locking pin 221 to limit its radial movement and prevent it from shaking. The locking hole 2151 limits the locking pin 221 axially to prevent it from dislodging. A gap is provided between the movable cavity 2112 and the locking pin 221 to reduce friction. The limiting hole 2111 is located near the button 22, and its diameter cooperates with the locking pin 221 to guide the linear movement of the locking pin 221 and prevent its radial movement. The movable cavity 2112 is located in the middle, and its diameter can be set to be larger than that of the locking pin 221, creating a significant gap between them. This prevents the locking pin 221 from rubbing against the hole wall during movement, thereby reducing the overall resistance experienced by the locking pin 221 during movement. The locking hole 2151 at the end of the locking channel 214 is located on the locking part of the support baffle 215. Its diameter, together with the limiting structure at the end of the locking pin 221, forms an axial limit to axially limit the locking pin 221 and prevent it from disengaging from the bracket assembly 21. By dividing the locking channel 214 into three sections, radial limiting of the locking pin 221 can be achieved while reducing the frictional force of the locking pin 221 during movement within the locking channel 214. The detachable locking part also provides an anti-disengagement function. This results in less resistance, smoother operation, and less likelihood of jamming when pressing the button 22 during unlocking.

[0035] Those skilled in the art will understand that although this disclosure provides a solution in which the locking part is set as part of the support baffle 215, this disclosure does not limit this in this respect. For example, in some embodiments not shown, the locking part can be part of the bracket body 211 and the movable cavity 2112 may not be provided. The locking channel 214 is a through hole, one end of which is used to abut the pressing part of the button 22, and the other end is used to axially limit the protruding end of the locking pin 221. In this case, the structure is simpler and the processing cost is lower.

[0036] See Figure 4 and Figure 5 , Figure 5 It shows Figure 3A partial cross-sectional view along line BB. In some embodiments, the locking protrusion 11 includes a main body 111 protruding along the thickness direction of the housing 10 plate surface, and a limiting part 112 extending perpendicularly to the protrusion direction of the main body 111. The limiting part 112 has a first mating inclined surface 1111 on the side facing the housing 10, and a corresponding second mating inclined surface 2101 is provided in the straight groove 210. The first mating inclined surface 1111 and the second mating inclined surface 2101 engage and abut against each other along the installation direction of the housing 10 and the detachable bracket 20 to reduce the installation gap. The main body 111 protrudes vertically from the housing 10 plate surface, and the limiting part 112 extends laterally from the top of the main body 111. The first mating inclined surface 1111 is located on the lower side of the limiting part 112 facing the housing 10 plate surface, and the second mating inclined surface 2101 is located in the straight groove 210 at a position opposite to it. During the locking process, the first mating inclined surface 1111 and the second mating inclined surface 2101 come into contact with each other and gradually form a wedge-shaped structure, generating pre-pressure in the installation direction. When the bracket assembly 21 is slidably installed in place, the locking member 23 engages with the locking member limiting groove 12. The wedge-shaped structure makes the two clamp each other tightly, thereby reducing the mating clearance caused by manufacturing tolerances and other reasons. Compared with the traditional planar fit, this inclined fit structure can automatically reduce errors, reduce the shaking between the detachable bracket 20 and the housing 10 after locking, and improve stability, which is especially suitable for the environment of frequent vibration when used in vehicles.

[0037] In this embodiment, the locking protrusion 11 includes a main body 111 and two limiting parts 112 disposed on opposite sides of the main body 111. This structure, with a laterally extending limiting part 112 on each side of the main body 111, is generally symmetrically "T"-shaped. The two limiting parts 112 simultaneously engage with two corresponding inclined surfaces within the straight groove 210, allowing the locking protrusion 11 to provide constraint forces on both the left and right sides. When the bracket assembly 21 is subjected to undesirable external forces such as vibration, this dual-sided limiting can evenly distribute the load to the contact area of ​​the two inclined surfaces, reducing the probability of bracket misalignment or localized wear due to uneven or unilateral force application, and increasing the area where the fastening force occurs, thus improving stability.

[0038] The vehicle-mounted detachable structure disclosed herein locks the components by automatically engaging them in the locking member limit groove under the action of a compression spring, and unlocks them by pressing the button back onto the locking member. It only requires linear sliding and pressing actions, eliminating the need for complex mechanisms such as locking hooks. This significantly reduces the structural space required for locking, reduces the number of parts and assembly errors, and makes disassembly and assembly operations simpler and more reliable.

[0039] While numerous embodiments of this disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of this disclosure. It should be understood that various alternatives to the embodiments of this disclosure described herein may be employed in the practice of this disclosure. The appended claims are intended to define the scope of this disclosure and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A vehicle-mounted detachable structure, characterized in that, include: The housing (10) includes a locking protrusion (11) having a locking member limiting groove (12). The detachable bracket (20) includes a bracket assembly (21), a button (22), a locking member (23), and a compression spring (24). The bracket assembly (21) has a straight groove (210) that matches the shape of the locking protrusion (11). The locking member (23) is supported in the straight groove (210) by the compression spring (24), and the position and shape of the locking member (23) match the locking member limiting groove (12). When the bracket assembly (21) moves to the point where the locking member (23) is aligned with the locking member limiting groove (12), the locking member (23) is engaged in the locking member limiting groove (12) under the pressure of the compression spring (24), locking the detachable bracket (20) to the housing (10). The button (22) can press back the locking member (23) to disengage the locking member (23) from the locking member limiting groove (12).

2. The vehicle-mounted detachable structure according to claim 1, characterized in that, The locking element (23) is a ball, and the locking element limiting groove (12) is a ball limiting groove that matches its shape.

3. The vehicle-mounted detachable structure according to claim 1, characterized in that, The locking protrusion (11) is provided with a guide slope (113) for guiding the locking member (23) to compress the compression spring (24) when the bracket assembly (21) is slidably sleeved to the outside of the locking protrusion (11).

4. The vehicle-mounted detachable structure according to claim 1, characterized in that, The inner wall of the straight groove (210) is provided with a guide hole (212), the locking member (23) is partially accommodated in the guide hole (212), one end of the compression spring (24) abuts against the bottom of the guide hole (212), and the other end abuts against the locking member (23). The guide hole (212) is configured to extend in a direction perpendicular to the surface of the housing (10).

5. The vehicle-mounted detachable structure according to claim 4, characterized in that, The inner wall of the straight groove (210) is also provided with a locking channel (214). The button (22) includes a locking pin (221). The locking pin (221) is slidably inserted into the locking channel (214) and is axially limited in the locking channel (214) to prevent it from coming out.

6. The vehicle-mounted detachable structure according to claim 5, characterized in that, The locking pin (221) also includes a retaining spring (222), which is engaged at the portion of the locking pin (221) inserted into the locking channel (214) to form an axial limit with the locking channel (214).

7. The vehicle-mounted detachable structure according to claim 5, characterized in that, The bracket assembly (21) further includes a support baffle (215) and a bracket body (211). The support baffle (215) is detachably disposed on the bracket body (211) and located at the bottom of the guide hole (212) to support the compression spring (24).

8. The vehicle-mounted detachable structure according to claim 7, characterized in that, The support baffle (215) further includes a locking part, and the locking channel (214) includes a limiting hole (2111), a movable cavity (2112) and a locking hole (2151) arranged sequentially along the axial direction. The limiting hole (2111) and the movable cavity (2112) are disposed on the bracket body (211), and the locking hole (2151) is disposed on the locking part. The limiting hole (2111) cooperates with the locking pin (221) to limit it radially to prevent shaking. The locking hole (2151) limits the locking pin (221) axially to prevent it from falling out. There is a gap between the movable cavity (2112) and the locking pin (221) to reduce friction.

9. The vehicle-mounted detachable structure according to any one of claims 1 to 8, characterized in that, The locking protrusion (11) includes a main body (111) that protrudes along the thickness direction of the shell (10) plate and a limiting part (112) that extends perpendicularly to the protrusion direction of the main body (111). The limiting part (112) has a first mating inclined surface (1111) on the side facing the shell (10), and a corresponding second mating inclined surface (2101) is provided in the straight groove (210). The first mating inclined surface (1111) and the second mating inclined surface (2101) are mated and pressed together along the installation direction of the shell (10) and the detachable bracket (20) to reduce the installation gap.

10. The vehicle-mounted detachable structure according to claim 7, characterized in that, The locking protrusion (11) includes a main body (111) and two limiting parts (112) disposed on opposite sides of the main body (111).

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