An interior trim ceiling connecting structure

Abstract

The application discloses a car interior roof connecting structure and belongs to the field of vehicle interior connecting. The car interior roof connecting structure comprises a base fixed on a vehicle frame, a connecting plate fixed on the edge of a roof, and a clamping assembly arranged between the base and the connecting plate. The clamping assembly comprises a buckle and a clamping groove which can be separated and matched. The application has the effect of meeting the detachable connection of the roof, thereby reducing the difficulty of maintenance or modification of the car interior roof.

Description

Technical Field

[0001] This application relates to the field of vehicle interior connection technology, and in particular to a vehicle interior roof connection structure. Background Technology

[0002] In the automotive manufacturing industry, the design and installation of car interiors are crucial for enhancing the overall quality of vehicles and the user experience. As an important component of the vehicle interior, the headliner not only serves a decorative purpose but also improves comfort and safety to a certain extent. With the continuous development of the automotive industry, consumers have increasingly higher demands for car interiors, including the aesthetics, comfort, and maintainability of the headliner. At the same time, automakers are constantly exploring new technologies and design concepts to meet consumer needs and enhance product competitiveness.

[0003] In traditional automotive headliner installation, several methods are typically used to connect the headliner to the vehicle frame. One common method is bolting, where holes are drilled in both the frame and the headliner, and bolts are used to secure them together. This method provides a relatively strong connection, but installation and disassembly are relatively complex, requiring specialized tools, and may leave holes in the frame and headliner after disassembly, affecting aesthetics and sealing. Another method is adhesive bonding, where the headliner is directly attached to the frame. This method is simpler to install, but the adhesive strength decreases over time, making the headliner prone to loosening, and cleaning the adhesive is difficult when the headliner needs to be removed for repairs or modifications. Additionally, some methods use welding to bond the headliner to the frame. This connection is very strong, but the welding process damages the original structure of both the headliner and the frame, and it does not allow for detachable connections, hindering future maintenance and modifications.

[0004] It is evident that these conventional connection methods in the existing technology have obvious defects. Methods such as bolt connection, adhesive bonding and welding are difficult to achieve a detachable connection between the roof and the frame. This makes the operation process complicated and difficult when repairing or modifying the car interior roof, and cannot meet the needs of the roof for maintainability and modifiability in actual use. Summary of the Invention

[0005] In order to enable the detachable connection of the roof, thereby reducing the difficulty of repairing or modifying the vehicle interior roof, this application provides a vehicle interior roof connection structure.

[0006] The technical solution for the vehicle interior headliner connection structure provided in this application is as follows: A vehicle interior headliner connection structure includes a base fixed to a vehicle frame, a connecting plate fixed to the edge of the headliner, and a snap-fit ​​assembly disposed between the base and the connecting plate. The snap-fit ​​assembly includes a detachable fastener and a slot.

[0007] By adopting the above technical solution, the snap-fit ​​assembly can detachably connect the base and the connecting plate, thus realizing the detachable connection between the roof and the frame. This facilitates the maintenance and modification of the roof and avoids the complicated operations and damage to components during disassembly and installation of traditional connection methods such as bolt connection, adhesive bonding and welding.

[0008] Preferably, the latching component is fixedly connected to the connecting plate. The latching component includes a connecting rod and a latching plate connected to the connecting rod. Two parallel connecting blocks are fixedly connected to the side wall of the connecting rod. A rotating shaft is fixedly connected between the two connecting blocks. The latching plate is sleeved on and rotatably connected to the rotating shaft. Torsion springs are sleeved on both ends of the rotating shaft. The two ends of the torsion springs are fixedly connected to the connecting blocks and the latching plate, respectively. A limiting member for restricting the bidirectional rotation of the latching plate is provided on the connecting block. The latching slot includes a protrusion and a connecting groove that matches the latching plate. The protrusion is fixedly connected to the base. A channel is opened in the inner wall of the connecting groove. The connecting rod is inserted into the channel. A transverse protrusion for preventing the latching plate from moving and a driving component for driving the transverse protrusion to move are provided in the connecting groove.

[0009] By adopting the above technical solution, during installation, the connecting rod with the retaining plate is inserted into the channel. The side wall of the channel will abut against and push the retaining plate to rotate against the torsion spring until it is parallel to the connecting rod inserted into the channel. After the retaining plate follows the connecting rod into the connecting groove, the retaining plate is reset to a position perpendicular to the connecting rod under the action of the torsion spring. At this time, the transverse boss moves to the position of the retaining plate under the action of the drive component and abuts against the retaining plate, thereby restricting the movement of the retaining plate and thus stabilizing the connection between the fastener and the slot.

[0010] Preferably, the limiting member is a limiting plate, one end of which is fixedly connected to the connecting block, and the limiting plate abuts against one side wall of the card plate.

[0011] By adopting the above technical solution, the limiting plate abuts against one side wall, so that the card plate can only rotate in the opposite direction to the limiting plate. As a result, when the card plate is in the connecting groove, it rotates due to its own weight and detaches from the base.

[0012] Preferably, the driving component includes an abutment block, the inner wall of the connecting groove is provided with a placement groove, the abutment block slides in the placement groove, the connecting rod is inserted into the placement groove and abuts against the abutment block, the connecting groove is provided with sliding grooves on both sides of the inner wall, the transverse boss is slidably connected to the inner wall of the sliding groove, and the sliding groove and the placement groove are connected by an extension groove; A first transmission rod is slidably disposed in the placement groove, and a second transmission rod is slidably connected in the extension groove. A first inclined surface is provided on the abutment block. A second inclined surface and a third inclined surface are respectively provided at both ends of the first transmission rod. The first inclined surface and the second inclined surface abut against each other. A fourth inclined surface and a fifth inclined surface are provided on the second transmission rod. The third inclined surface and the fourth inclined surface abut against each other. A sixth inclined surface is provided at the end of the transverse protrusion away from the connecting rod. The fifth inclined surface and the sixth inclined surface abut against each other. A reset component for driving the transverse protrusion to reset is provided inside the protrusion.

[0013] By adopting the above technical solution, when the connecting rod continues to be inserted into the protrusion, the connecting rod is inserted into the placement groove and pushes the abutment block to move. The movement of the abutment block is driven by the first inclined surface and the second inclined surface. The first transmission rod moves under the push of the abutment block. The movement of the first transmission rod drives the second transmission rod to move under the action of the third and fourth inclined surfaces. The movement of the second transmission rod drives the transverse protrusion to move to the extension sliding groove and abut against one side wall of the clamping plate through the cooperation of the fifth and sixth inclined surfaces, thus avoiding the clamping plate from shaking in the connecting groove.

[0014] Preferably, the limiting plate and the connecting rod are made of shape memory alloy, which deforms under the influence of temperature. The deformation of the shape memory alloy is related to the temperature change through martensitic phase transformation.

[0015] By adopting the above technical solution, when the ceiling needs to be repaired or modified, the staff can use an external heating rod to press against the corresponding position of the buckle assembly. The heat energy is transferred between the structures to the limiting plate and the connecting rod. When the temperature reaches the threshold, the shape of the limiting plate and the connecting rod changes, shrinks and returns to its original shape. At this time, the volume of the limiting plate and the connecting rod is reduced. The abutment block and the transverse boss are reset under the action of the reset assembly as the volume of the connecting rod changes. The limiting plate moves away from the buckle plate. At this time, the staff can pull down the ceiling buckle plate and rotate it under the action of the inner wall of the connecting groove, so that the connecting rod is disengaged from the connecting groove. Thus, the connection between the buckle and the groove can be released without damage.

[0016] Preferably, the reset assembly includes a first reset block, a second reset block, a first spring, and a second spring. The inner wall of the sliding groove has a first reset groove, the first reset block slides in the first reset groove, and the first reset block is fixedly connected to the side wall of the transverse boss. The first spring is disposed in the first reset groove, and its two ends are respectively fixedly connected to the first reset block and the inner wall of the first reset groove. The inner wall of the extension groove has a second reset groove, the second reset block slides in the second reset groove, and the second reset block is fixedly connected to the side wall of the second transmission rod. The second spring is disposed in the second reset groove, and its two ends are respectively fixedly connected to the second reset block and the inner wall of the second reset groove.

[0017] By adopting the above technical solution, when the connecting rod is inserted into the placement groove and pushes the abutment block to move, the second reset block moves with the second transmission rod and compresses the second spring to move. The movement of the transverse boss drives the first reset block to compress the first spring to move. When the volume of the connecting rod shrinks and tends to disengage from the abutment block, the first reset block and the second reset block, driven by the first spring and the second spring respectively, drive the transverse boss and the second transmission rod to move, thereby causing the transverse boss to enter the sliding groove and move away from the card plate.

[0018] Preferably, an elastic block is provided on the side wall of the connecting rod, and a first convex ring and a second convex ring that cooperate with the elastic block are provided on the inner wall of the channel.

[0019] By adopting the above technical solution, when the card plate is inserted into the connecting groove, the buckle and the slot are pre-installed to ensure the accuracy of the installation. When the connecting rod is inserted into the channel, the elastic block on its side wall first abuts against the first convex ring. The elastic block deforms under its pressure. After the elastic block deforms and passes the first convex ring, it is located between the first and second convex rings. At this time, the connecting rod is initially restricted, and the operator can check it. After the check is completed, the operator pushes the connecting rod in again. At this time, the elastic block deforms and passes the second convex ring under the operator's push. When disassembling, the second convex ring can prevent the connecting rod from falling directly off the frame when it leaves the connecting groove.

[0020] Preferably, a rubber strip is fixedly connected to the periphery of the canopy, and the rubber strip slides against the inner wall of the frame.

[0021] By adopting the above technical solution, the rubber strip can enhance the sealing between the roof and the frame. At the same time, when the roof is installed inside the frame, the rubber strip can prevent the roof from sliding randomly.

[0022] Preferably, the rubber strip is provided with protrusions, and the inner wall of the frame is provided with grooves for the protrusions to slide.

[0023] By adopting the above technical solution, when placing the roof, the protrusions and grooves need to be aligned, and the roof needs to be pushed closer to the top of the frame. The cooperation between the protrusions and grooves can be used for positioning during installation, reducing the need for adjustments to the roof during installation.

[0024] Preferably, multiple snap-fit ​​components are provided, and the multiple snap-fit ​​components are evenly distributed along the circumference.

[0025] By adopting the above technical solution, multiple snap-fit ​​components are evenly distributed along the circumference, which makes the stress on the roof and the frame more uniform in all directions, thus improving the stability of the connection.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The snap-fit ​​assembly allows for a detachable connection between the base and the connecting plate, thus enabling a removable connection between the roof and the frame. This facilitates roof maintenance and modification, avoiding the complex operations and damage to components associated with traditional connection methods such as bolt connections, adhesive bonding, and welding during disassembly and installation. During installation, the connecting rod, carrying the retaining plate, is inserted into the channel. The side wall of the channel abuts against and pushes the retaining plate to rotate against the torsion spring until it is parallel to the connecting rod inserted into the channel. After the retaining plate follows the connecting rod into the connecting groove, the retaining plate returns to a position perpendicular to the connecting rod under the action of the torsion spring. At this time, the transverse boss moves to the position of the retaining plate under the action of the drive assembly and abuts against the retaining plate, thereby restricting the movement of the retaining plate and thus stabilizing the connection between the fastener and the slot. When the ceiling needs repair or modification, the worker uses an external heating rod to press against the corresponding position of the buckle assembly. This allows heat to be transferred between the structures to the limiting plate and connecting rod. When the temperature reaches the threshold, the shape of the limiting plate and connecting rod changes, shrinking and returning to its original shape. At this time, the volume of the limiting plate and connecting rod shrinks, and the abutment block and the transverse boss reset under the action of the reset assembly as the volume of the connecting rod changes. The limiting plate moves away from the buckle plate. Then, the worker pulls down the ceiling buckle plate, which rotates under the action of the inner wall of the connecting groove, causing the connecting rod to disengage from the connecting groove. This allows the connection between the buckle and the groove to be released without damage. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the protruding groove in an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the structure of the prominent snap-fit ​​component in the embodiments of this application.

[0029] Figure 3 This is a structural schematic diagram of the prominent fastener in the embodiments of this application.

[0030] Figure 4This is a cross-sectional structural diagram of the prominent snap-fit ​​component in the embodiments of this application.

[0031] Explanation of reference numerals in the attached figures: 1. Frame; 2. Roof; 3. Base; 4. Connecting plate; 5. Snap-fit ​​assembly; 6. Buckle; 7. Slot; 8. Connecting rod; 9. Clamping plate; 10. Connecting block; 11. Shaft; 12. Torsion spring; 13. Protrusion; 14. Connecting groove; 15. Channel; 16. Drive assembly; 17. Lateral boss; 18. Limiting plate; 19. Abutment block; 20. Placement groove; 21. Sliding groove; 22. Extension groove; 23. First transmission rod; 24. Second transmission rod 25. First inclined plane; 26. Second inclined plane; 27. Third inclined plane; 28. Fourth inclined plane; 29. ​​Fifth inclined plane; 30. Sixth inclined plane; 31. Reset assembly; 32. First reset block; 33. First spring; 34. First reset groove; 35. Second reset block; 36. Second spring; 37. Second reset groove; 38. Elastic block; 39. First convex ring; 40. Second convex ring; 41. Rubber strip; 42. Protrusion; 43. Groove; 44. Rubber pad. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0033] This application discloses a connection structure for a vehicle interior roof 2, such as... Figure 1 and Figure 2 As shown, it includes a base 3 fixed to the frame 1, a connecting plate 4 fixed to the edge of the roof 2, and a snap-fit ​​assembly 5 disposed between the base 3 and the connecting plate 4. Multiple snap-fit ​​assemblies 5 are provided and are evenly distributed circumferentially, which can make the roof 2 and the frame 1 more uniformly stressed in all directions and improve the stability of the connection.

[0034] like Figure 1 As shown, a rubber strip 41 is fixedly connected to the periphery of the canopy 2. The rubber strip 41 slides against the inner wall of the frame 1, preventing the canopy 2 from sliding during placement and facilitating the adjustment of its position by the operator. A protrusion 42 is provided at a fixed position on the rubber strip 41, and a corresponding groove 43 is provided on the inner wall of the frame 1 for the protrusion 42 to slide. When placing the canopy 2, the protrusion 42 needs to be aligned with the groove 43 to provide positioning for the canopy 2. After the protrusion 42 and the groove 43 are aligned, the operator slowly pushes the canopy 2 closer to the top of the frame 1. The rubber strip 41 slides on the inner wall of the frame 1, which enhances the seal between the canopy 2 and the frame 1.

[0035] like Figure 3 and Figure 4As shown, the snap-fit ​​assembly 5 includes a detachable snap-fit ​​component 6 and a slot component 7. The connecting plate is connected to the edge of the ceiling 2 by adhesive or rivets. The snap-fit ​​component 6 is integrally formed and welded to the connecting plate 4. The snap-fit ​​component 6 includes a connecting rod 8 and a locking plate 9 that rotates on the connecting rod 8. Two locking plates 9 are symmetrically arranged. An elastic block 38 is fixedly provided on the top side wall of the connecting rod 8. The elastic block 38 is arranged in a ring and surrounds the connecting rod 8. Two parallel connecting blocks 10 are fixedly welded to the side wall of the connecting rod 8 below the elastic block 38. A rotating shaft 11 is fixedly welded between the two connecting blocks 10. The locking plate 9 is sleeved on and rotatably connected to the rotating shaft 11. A torsion spring 12 is sleeved on the rotating shaft 11. The two ends of the torsion spring 12 are fixedly welded to the connecting block 10 and the locking plate 9, respectively. The connecting block 10 is provided with a limiting member for restricting the bidirectional rotation of the card plate 9. The limiting member is a limiting plate 18, and two limiting plates 18 are provided, one on the top of each of the two connecting blocks 10. The two limiting plates 18 extend towards each other and abut against the side wall of the card plate 9. Due to the obstruction of the two limiting plates 18, the card plate 9 can only rotate in the direction away from the limiting plates 18.

[0036] like Figure 3 and Figure 4 As shown, the card slot 7 includes a protrusion 13 and a connecting groove 14 that matches the card plate 9. The protrusion 13 is integrally formed with the base 3. A channel 15 is provided at the end of the protrusion 13 away from the frame 1, and the channel 15 is connected to the connecting groove 14. The inner wall of channel 15 is provided with a first protruding ring 39 and a second protruding ring 40 that cooperate with the elastic block 38. When the connecting rod 8 is inserted into channel 15, the elastic block 38 is press-fitted with the first protruding ring 39 and the second protruding ring 40 respectively. When the connecting rod 8 passes the first protruding ring 39 and is between the first protruding ring 39 and the second protruding ring 40 under the pushing force of the installer, it is considered a pre-installation of the ceiling 2. The installer completes the pre-installation of multiple buckle components in sequence, observes and judges that the position of the ceiling 2 is correct, and all buckle parts 6 and slot parts 7 are pre-connected before fixed connection, so as to avoid problems in installation, repeated disassembly and other problems, which affect the work efficiency. If the position is not aligned, the installer pulls the ceiling 2 to pull the connecting rod 8 out of channel 15 and re-aligns and installs it. A rubber pad is provided on the connecting plate 4. When the connecting rod 8 is fully inserted into the protrusion 13, the protrusion 13 presses against the rubber pad, which can strengthen the connection, reduce rigid collision and avoid shaking.

[0037] like Figure 3 and Figure 4As shown, when the canopy 2 is installed, the worker pushes the canopy 2 to drive the connecting rod 8 into the channel 15. The side wall of the channel 15 will abut against and push the clamping plate 9 to overcome the torsion spring 12 and rotate until it is parallel to the connecting rod 8 and inserted into the channel 15. When the connecting rod 8 enters the connecting groove 14, it continues to move inward. When the clamping plate 9 is fully entered into the connecting groove 14, the plate is reset to a position perpendicular to the connecting rod 8 under the action of the torsion spring 12.

[0038] like Figure 4 As shown, the inner walls of the connecting groove 14 near the channel 15 are provided with sliding grooves 21. A transverse boss 17 is slidably disposed in the sliding groove 21, and a driving assembly 16 for driving the transverse boss 17 is disposed in the boss 13. The inner wall of the connecting groove 14 away from the channel 15 is provided with a placement groove 20. The driving assembly 16 includes an abutment block 19, which slides in the placement groove 20. The connecting rod 8 can be inserted into the placement groove 20 and pushed against the abutment block 19. The sliding groove 21 and the placement groove 20 are connected by an extension groove 22. The placement groove 20 has a first transmission rod 23 slidably disposed at both ends of the abutment block 19, and the extension groove 22 has a second transmission rod 24 slidably connected. The abutment block 19 has a first inclined surface 25 at both ends, and the first transmission rod 23 has a second inclined surface 26 and a third inclined surface 27 at both ends. The first inclined surface 25 and the second inclined surface 26 abut against each other. The second transmission rod 24 has a fourth inclined surface 28 and a fifth inclined surface 29. The third inclined surface 27 and the fourth inclined surface 28 abut against each other. The transverse protrusion 13 has a sixth inclined surface 30 at the end away from the connecting rod 8. The fifth inclined surface 29 and the sixth inclined surface 30 abut against each other. The protrusion 13 has a reset component 31 for driving the transverse protrusion 17 to reset.

[0039] like Figure 4 As shown, when the connecting rod 8 is inserted into the placement slot 20 through the connecting groove 14, its end pushes the abutment block 19 to move. The movement of the abutment block 19, through the action of the first inclined surface 25 and the second inclined surface 26, pushes the first transmission rod 23 to move away from the abutment block 19. The movement of the first transmission rod 23, under the action of the third inclined surface 27 and the fourth inclined surface 28, drives the second transmission rod 24 to move. The movement of the second transmission rod 24, under the action of the fifth inclined surface 29 and the sixth inclined surface 30, drives the transverse boss 17 to move closer to the connecting rod 8, so that the transverse boss 17 is partially removed from the sliding groove 21 and slidably connected to the bottom of the clamping plate 9, abutting against the clamping plate 9. This limits the wobbling that may occur when the clamping plate 9 is too large in the connecting groove 14, thereby improving the stability of the connection.

[0040] like Figure 4As shown, the reset assembly 31 includes a first reset block 32, a second reset block 35, a first spring 33, and a second spring 36. The first reset block 32 is fixedly welded to the side wall of the transverse boss 17. A first reset groove 34 is formed in the inner wall of the sliding groove 21, and the first reset block 32 slides in the first reset groove 34. The first spring 33 is disposed in the first reset groove 34, and its two ends are fixedly welded to the inner wall of the first reset block 32 and the first reset groove 34, respectively. The second reset block 35 is fixedly welded to the side wall of the second transmission rod 24. A second reset groove 37 is formed in the inner wall of the extension groove 22, and the second reset block 35 slides in the second reset groove 37. The second spring 36 is disposed in the second reset groove 37, and its two ends are fixedly welded to the inner wall of the second reset block 35 and the second reset groove 37, respectively. When the connecting rod 8 is inserted into the placement slot 20 and pushes the abutment block 19 to move, the second reset block 35 moves with the second transmission rod 24 and compresses the second spring 36 to move. The lateral boss 17 moves and drives the first reset block 32 to compress the first spring 33 to move.

[0041] like Figure 4 As shown, the limiting plate 18 and connecting rod 8 are made of shape memory alloy, a material that deforms under temperature influence, with the deformation of the shape memory alloy being related to temperature changes. Shape memory alloys can be plastically deformed at low temperatures (martensitic phase), and when heated to their phase transformation temperature, such as 70°C-100°C for nickel-titanium alloys, the material recovers to its original shape at high temperatures (austenitic phase). This characteristic makes it a reversible mechanical connection tool. Furthermore, the deformation temperature varies depending on the raw materials and proportions of the shape memory alloy; therefore, a suitable shape memory alloy can be selected based on the specific circumstances. The limiting plate 18, the connecting rod 8, and even the entire buckle 6 can be made of shape memory alloy. As long as the top of the connecting rod 8, that is, the part inserted into the placement groove 20, deforms to release its fixing effect on the abutment block 19, and the deformation of the limiting plate 18 releases its limiting effect on the buckle plate 9, the entire buckle 6 can be released from the buckle slot 7. If the rest of the buckle 6 is also made of shape memory material, the overall structure is reduced, making it easier to detach from the buckle slot 7.

[0042] When the ceiling 2 needs repair or modification, workers use external heating rods or other tools to press against the corresponding positions of the clip components. Heat is transferred to the clips 6 via heat transfer. To better facilitate heat transfer, a heat-conducting metal rivet or similar structure can be used to connect the connecting plate 4 to the ceiling 2, allowing the rivets to pass through the ceiling 2. A decorative fabric is then placed on the surface of the ceiling 2 for concealment and decoration. If the connecting plate 4 is glued to the ceiling 2, a high-melting-point adhesive should be used to prevent fusion during heat transfer. Heat is transferred to the limiting plate 18 and the connecting rod 8. When the temperature reaches the threshold, the shape of the limiting plate 18 and the connecting rod 8 changes, shrinks and returns to its original shape. At this time, the volume of the limiting plate 18 and the connecting rod 8 is reduced. The abutment block 19 and the transverse boss 17 are reset under the action of the reset component 31 as the volume of the connecting rod 8 changes. The transverse boss 17 enters the sliding groove 21 and moves away from the locking plate 9. The limiting plate 18 shrinks and moves away from the position where it was abutting the locking plate 9. At this time, when the worker pulls down the ceiling 2, the locking plate 9 rotates in the connecting groove 14. Under the action of the inner wall of the connecting groove 14, the locking plate 9 rotates away from the channel 15, thereby preventing the locking plate 9 from obstructing the connecting rod 8 from disengaging from the connecting groove 14 and the channel 15. When the connecting rod 8 disengages from the channel 15, the fastener 6 separates from the slot 7, so that the connection between the ceiling 2 and the workshop can be removed without damage.

[0043] The implementation principle of this application embodiment is as follows: In the installation between the roof 2 and the frame 1, the installation and positioning are first performed, the rubber strip 41 abuts against the inner wall of the sliding frame 1, and the protrusion 42 on it is aligned with the groove 43 of the inner wall of the frame 1; secondly, the connecting plate 4 is connected to the edge of the roof 2 by adhesive or rivets, the buckle 6 is integrally formed and welded to the connecting plate 4, the slot 7 is integrally formed with the base 3, and the inner wall of its channel 15 has a first protruding ring 39 and a second protruding ring 40. During installation, the connecting rod 8 is inserted into the channel 15, and the elastic block 38 is pre-installed by interference fit with the two convex rings. After the staff completes the pre-installation of multiple buckle components and observes and judges that the position of the canopy 2 is correct and all buckle parts 6 and slot parts 7 are pre-connected, the fixed connection is then performed. If the position is not aligned, the canopy 2 is pulled out to remove the connecting rod 8 for reinstallation. When installing the canopy 2, the canopy 2 is pushed to move the connecting rod 8 into the channel 15. The side wall of the channel 15 pushes the locking plate 9 to overcome the torsion spring 12 and rotate until it is parallel to the connecting rod 8 inserted into the channel 15. After entering the connecting groove 14, the locking plate 9 is reset to the position perpendicular to the connecting rod 8 under the action of the torsion spring 12. The connecting rod 8 is continued to be pushed to move it into the placement groove 20 to push the abutment block 19. Through the cooperation of multiple sets of inclined surfaces, the first The transmission rod 23 and the second transmission rod 24 move, driving the transverse boss 17 to move closer to the connecting rod 8 and abut against the bottom of the clamping plate 9, limiting the wobbling of the clamping plate 9 and improving the connection stability. When the roof 2 needs to be repaired or modified, external heating rods or other tools are used to abut against the corresponding position of the buckle assembly. Through heat transfer, the shape memory alloy structure of the limiting plate 18 and the connecting rod 8 reaches the threshold temperature, and the shape changes and the volume shrinks. The abutting block 19 and the transverse boss 17 are reset under the action of the reset assembly 31. The transverse boss 17 moves away from the clamping plate 9, and the limiting plate 18 moves away from the clamping plate 9. At this time, the roof 2 is pulled down, and the clamping plate 9 rotates under the action of the inner wall of the connecting groove 14, avoiding obstruction of the connecting rod 8 from disengaging, and realizing the non-damaging removal of the roof 2 from the frame 1.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connecting structure for a vehicle interior headliner (2), characterized in that: It includes a base (3) fixed to the frame (1), a connecting plate (4) fixed to the edge of the roof (2), and a snap-fit ​​assembly (5) disposed between the base (3) and the connecting plate (4), the snap-fit ​​assembly (5) including a separable fastener (6) and a slot (7).

2. The connection structure of the interior roof (2) of a vehicle according to claim 1, characterized in that: The fastener (6) is fixedly connected to the connecting plate (4). The fastener (6) includes a connecting rod (8) and a locking plate (9) connected to the connecting rod (8). Two parallel connecting blocks (10) are fixedly connected to the side wall of the connecting rod (8). A rotating shaft (11) is fixedly connected between the two connecting blocks (10). The locking plate (9) is sleeved on and rotatably connected to the rotating shaft (11). Torsion springs (12) are sleeved on both ends of the rotating shaft (11). The two ends of the torsion springs (12) are fixedly connected to the connecting block (10) and the locking plate (9) respectively. The connecting block (10) is provided with a limiting member for restricting the bidirectional rotation of the card plate (9). The card slot (7) includes a protrusion (13) and a connecting groove (14) in the protrusion (13) that matches the card plate (9). The protrusion (13) is fixedly connected to the base (3). A channel (15) is provided in the inner wall of the connecting groove (14). The connecting rod (8) is inserted into the channel (15). A transverse boss (17) is provided in the connecting groove (14) to prevent the card plate (9) from moving and a driving assembly (16) to drive the transverse boss (17) to move.

3. The connection structure of the interior roof (2) of a vehicle according to claim 2, characterized in that: The limiting component is a limiting plate (18), one end of which is fixedly connected to the connecting block (10), and the limiting plate (18) abuts against one side wall of the card plate (9).

4. The connection structure of the interior roof (2) of a vehicle according to claim 2, characterized in that: The drive assembly (16) includes an abutment block (19), and the inner wall of the connecting groove (14) is provided with a placement groove (20). The abutment block (19) slides in the placement groove (20), and the connecting rod (8) is inserted into the placement groove (20) and abuts against the abutment block (19). The connecting groove (14) is provided with sliding grooves (21) on both sides of its inner wall. The transverse boss (17) is slidably connected to the inner wall of the sliding groove (21). The sliding groove (21) and the placement groove (20) are connected by an extension groove (22). A first transmission rod (23) is slidably disposed in the placement groove (20), and a second transmission rod (24) is slidably connected in the extension groove (22). A first inclined surface (25) is provided on the abutment block (19). A second inclined surface (26) and a third inclined surface (27) are respectively provided at both ends of the first transmission rod (23). The first inclined surface (25) and the second inclined surface (26) abut against each other. A fourth inclined surface (28) and a fifth inclined surface (29) are provided on the second transmission rod (24). The third inclined surface (27) and the fourth inclined surface (28) abut against each other. A sixth inclined surface (30) is provided at the end of the transverse protrusion (13) away from the connecting rod (8). The fifth inclined surface (29) and the sixth inclined surface (30) abut against each other. A reset component (31) for driving the transverse protrusion (17) to reset is provided in the protrusion (13).

5. The connection structure of the interior roof (2) of a vehicle according to claim 2, characterized in that: The limiting plate (18) and the connecting rod (8) are made of shape memory alloy, which deforms when affected by temperature. The deformation of the shape memory alloy is related to temperature change through martensitic phase transformation.

6. The connection structure of the interior roof (2) of a vehicle according to claim 4, characterized in that: The reset assembly (31) includes a first reset block (32), a second reset block (35), a first spring (33), and a second spring (36). The inner wall of the sliding groove (21) is provided with a first reset groove (34). The first reset block (32) slides in the first reset groove (34) and is fixedly connected to the side wall of the transverse boss (17). The first spring (33) is disposed in the first reset groove (34) and its two ends are fixedly connected to the inner wall of the first reset block (32) and the first reset groove (34), respectively. The inner wall of the extension groove (22) is provided with a second reset groove (37). The second reset block (35) slides in the second reset groove (37) and is fixedly connected to the side wall of the second transmission rod (24). The second spring (36) is disposed in the second reset groove (37) and its two ends are fixedly connected to the inner wall of the second reset block (35) and the second reset groove (37), respectively.

7. The connection structure of the interior roof (2) of a vehicle according to claim 2, characterized in that: An elastic block (38) is provided on the side wall of the connecting rod (8), and a first protruding ring (39) and a second protruding ring (40) that cooperate with the elastic block (38) are provided on the inner wall of the channel (15).

8. The connection structure of the interior roof (2) of a vehicle according to claim 1, characterized in that: A rubber strip (41) is fixedly connected around the perimeter of the canopy (2), and the rubber strip (41) slides against the inner wall of the frame (1).

9. The connection structure of the interior roof (2) of a vehicle according to claim 8, characterized in that: The rubber strip (41) is provided with protrusions (42), and the inner wall of the frame (1) is provided with grooves (43) for the protrusions (42) to slide.

10. The connection structure of the interior roof (2) of a vehicle according to claim 1, characterized in that: Multiple snap-fit ​​components (5) are provided, and the multiple snap-fit ​​components (5) are evenly distributed along the circumference.

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