A cross beam bracket for a vehicle

Abstract

This application relates to the technical field of automotive connectors, and in particular to an automotive crossbeam bracket, including a crossbeam and a longitudinal beam. The crossbeam has a cavity with a guide groove at its upper end. The longitudinal beam has a notch corresponding to the crossbeam, and a detachable base is embedded in the notch. One end of the base has a connector corresponding to the cavity. The connector is U-shaped and has a boss corresponding to the guide groove. The boss has protruding wings at both ends located at the upper end of the crossbeam. The connector has a buckle. The buckle includes pins that slide symmetrically on both sides of the connector. The pins have guide ramps. The crossbeam has pin holes corresponding to the pins. In this invention, the pin tightening ramp abuts against the tightening ramp, so that when the crossbeam is subjected to lateral force, the pins and pin holes form a wedge fit, generating radial preload, further enhancing the stability and vibration resistance of the connection, and preventing the connection point from loosening or shifting during long-term use.

Description

Technical Field

[0001] This application relates to the technical field of automotive connectors, and in particular to an automotive crossbeam bracket. Background Technology

[0002] The crossbeams of an automobile are the core lateral structural components of the chassis system. They are typically made of high-strength steel or lightweight aluminum alloy and are located at the front of the vehicle body (connecting the front longitudinal beams) or in the chassis area (running through the left and right longitudinal beams), forming a closed frame through lateral connections. Their main functions include: improving the torsional stiffness of the entire vehicle to ensure driving stability, transferring road loads (such as bumps and collision impacts) to the body longitudinal beams, and serving as the mounting base for the powertrain components such as the engine and suspension system, thus providing lateral support for the vehicle's "skeleton."

[0003] The automotive crossbeam bracket is the supporting structure for the crossbeam. It can be divided into different types according to its location and function: for example, the dashboard crossbeam bracket (hidden under the dashboard, fixing the center console screen, steering column and other interior and safety components), and the chassis crossbeam bracket (connecting the suspension system or battery pack, supporting the powertrain and distributing the load). Its design needs to be coordinated with the crossbeam and integrated through welding, bolting and other methods to jointly form a key subsystem for vehicle dynamic load bearing and safety protection.

[0004] For example, a bracket device for connecting a crossbeam and longitudinal beam in an automobile, with application number CN202011174298.X, relates to the field of automotive parts assembly and connection technology. This prior art includes a base plate, bracket connecting plates, and a bracket structure. The base plate is a planar plate structure and is fixedly connected to the side of the longitudinal beam. Two bracket connecting plates are symmetrically fixed to the base plate, with the bottom ends of the bracket connecting plates vertically fixed to the base plate. The bracket structure is fixed between the bracket connecting plates. When the base plate is placed vertically, the bracket structure is located below the bracket connecting plates on the base plate. The bracket connecting plates and the bracket structure together form a support and fixing part for placing and fixing the end of the automobile crossbeam. This bracket device for connecting a crossbeam and longitudinal beam in an automobile has a simple overall structure, is easy to install, manufacture, and disassemble, reduces installation intensity, has a good positioning function, and can effectively improve the connection strength between the crossbeam and longitudinal beam, making it highly practical.

[0005] However, the aforementioned existing technologies still have some shortcomings when it comes to connecting the crossbeams and longitudinal beams of automobiles:

[0006] The aforementioned existing technology employs a planar plate structure, fixed to the side of the longitudinal beam by blind rivets. Two plates are symmetrically fixed to the base plate perpendicularly. The rivet fixation is a rigid connection. However, during vehicle operation, vibrations occur, causing the connection points to bear alternating loads (forces with periodically changing direction and magnitude). This results in the rivet shank repeatedly experiencing shear and compressive stresses in the contact area with the hole wall. Because the rigid connection lacks elastic buffering, stress cannot be effectively dispersed, leading to stress concentration points at the edge of the rivet hole. Under long-term vibration, the material of the rivet or connecting plate (base plate, bracket connecting plate) is prone to fatigue accumulation, resulting in microcracks that may eventually cause the rivet to loosen or the connecting plate to crack.

[0007] Based on this, as stated above, there is still room for improvement in the existing technology regarding the connection between the crossbeams and longitudinal beams of automobiles. Summary of the Invention

[0008] To solve the above-mentioned technical problems, this application provides an automotive crossbeam bracket, which adopts the following technical solution:

[0009] A car crossbeam bracket includes a crossbeam and a longitudinal beam. The crossbeam has a cavity, and a guide groove is provided at the upper end of the cavity. The longitudinal beam has a notch corresponding to the crossbeam. A detachable base is embedded in the notch, and a connector corresponding to the cavity is provided at one end of the base.

[0010] The connector is shaped like a square and has a boss on it that corresponds to the guide groove. The boss has protruding wings at both ends located on the upper end of the crossbeam, and a buckle is provided inside the connector.

[0011] The buckle includes symmetrical pin blocks that slide through both sides inside the connector. The pin blocks are provided with guide slopes. The crossbeam has pin holes corresponding to the pin blocks. The connector is provided with a slide rail. A slider is slidably mounted on the slide rail. Guide slopes corresponding to the guide slopes are provided on both sides of the slider.

[0012] Preferably, the buckle also includes a pin groove on the pin block, a stop block that is slidably disposed in the pin groove and connected to the connector, and a retaining spring is disposed between one end of the stop block and the pin groove.

[0013] Preferably, the pin block is provided with a locking bevel, and one end of the pin hole is provided with a locking bevel corresponding to the locking bevel.

[0014] Preferably, the connector is equipped with a locking mechanism;

[0015] The latch includes a locking pin that slides through the lower side of the connector, a locking guide slope is provided on the locking pin, a locking hole corresponding to the locking pin is provided on the crossbeam, and a locking block corresponding to the locking guide slope is provided on the slider.

[0016] Preferably, the locking pin is provided with a locking bevel, and the lock hole is provided with an abutting bevel corresponding to the locking bevel.

[0017] Preferably, the locking pin has a sliding groove, and a sliding block connected to the connector is slidably disposed in the sliding groove. A contact spring is disposed between one end of the sliding block and the sliding groove.

[0018] Preferably, a guide groove is provided on the slide rail, and a guide plate connected to the slider is slidably disposed in the guide groove. A return spring is provided between one end of the guide plate and the guide groove.

[0019] Preferably, a limiting bolt corresponding to the slider is rotatably inserted on the base, and the limiting bolt is threadedly connected to the base.

[0020] Preferably, one end of the connector is provided with a detachable support frame, the inner side of the support frame corresponds to the outer side of the crossbeam, and a pressure wing located on the upper end of the convex wing is provided thereon.

[0021] Preferably, one end of the connector is provided with a sealing plate, the sealing plate is provided with sealing holes corresponding to the through cavity and the guide groove, the connector is provided with a connecting groove, and the sealing plate is provided with a connecting rod corresponding to the connecting groove;

[0022] The connecting groove has a slot, and a locking tongue is pressed in the slot by a spring. One end of the locking tongue has an inclined surface, and the connecting rod has a corresponding slot.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The pin-tightening inclined surface of the present invention will press against the pressing inclined surface, so that when the crossbeam is subjected to lateral force, the pin block and the pin hole form a wedge-shaped fit, generating radial preload, which further enhances the stability and vibration resistance of the connection and prevents the connection point from loosening or displacing during long-term use.

[0025] 2. This invention features a locking bevel on the locking pin, which abuts against a corresponding abutting bevel on the locking hole, preventing axial movement of the crossbeam due to vibration. The vertical arrangement of the locking pin and the pin block creates a constraint, and the locking bevel and the abutting bevel work together to produce a self-locking effect, significantly improving the crossbeam's resistance to lateral loads. An abutting spring is installed in the sliding groove to absorb vibration energy when the vehicle is bumpy, extending the fatigue life of the connection point.

[0026] 3. In this invention, the guide spring provides elastic support between the connecting plates, dynamically balancing the tension fluctuations of the connecting rope; when the slider moves, the helical motion of the threaded connecting rod is converted into the radial thrust of the pin block. By rotating the adjusting ring, the adjusting ring, through the threaded connection, forces the movement of the threaded connecting rod to change the elastic force of the guide spring. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2This is a schematic diagram of the structure between the crossbeam and the longitudinal beam of the present invention.

[0029] Figure 3 This is a schematic diagram of the structure of the crossbeam of the present invention.

[0030] Figure 4 This is a schematic diagram of the structure between the base, crossbeam, and longitudinal beam of the present invention.

[0031] Figure 5 This is a structural diagram of the base, connector, and buckle of the present invention.

[0032] Figure 6 This is a schematic diagram of the buckle structure of the present invention.

[0033] Figure 7 This is a schematic diagram of the structure between the slide rail and the slider of the present invention.

[0034] Figure 8 This is a schematic diagram of the pin block structure of the present invention.

[0035] Figure 9 This is a schematic diagram of the locking mechanism of the present invention.

[0036] Figure 10 This is a schematic diagram of the locking pin structure of the present invention.

[0037] Figure 11 This is a structural diagram of the base, support frame, connector, and sealing plate of the present invention.

[0038] Figure 12 This is a schematic diagram of the locking tongue of the present invention.

[0039] Figure 13 This is a schematic diagram of the connecting rope of the present invention.

[0040] Figure 14 This is the present invention. Figure 13 A magnified view of part A.

[0041] Explanation of reference numerals in the attached drawings: 1. Crossbeam; 11. Through cavity; 12. Guide groove; 13. Limiting bolt; 2. Longitudinal beam; 21. Notch; 3. Base; 31. Joint; 32. Boss; 33. Protruding wing; 4. Buckle; 41. Pin block; 411. Guide ramp; 42. Pin hole; 43. Slide rail; 431. Slider; 44. Guide ramp; 45. Pin groove; 451. Stop block; 46. Holding spring; 47. Pin holding ramp; 48. Holding ramp; 49. Guide groove; 491. Guide plate; 492. Return spring 5. Locking buckle; 51. Locking pin; 511. Locking guide bevel; 52. Locking hole; 53. Locking bevel block; 531. Locking bevel surface; 54. Abutting bevel surface; 55. Sliding groove; 551. Sliding block; 56. Abutting spring; 6. Support frame; 61. Pressure wing; 62. Sealing plate; 63. Sealing hole; 64. Connecting groove; 65. Connecting rod; 66. Slot; 67. Locking tongue; 68. Inclined surface; 69. Bayonet; 7. Threaded connecting rod; 71. Adjusting ring; 72. Connecting rope; 73. Connecting plate; 74. Guide spring. Detailed Implementation

[0042] The following is in conjunction with the appendix Figures 1 to 14 This application will be described in further detail.

[0043] This application discloses an automotive crossbeam bracket that generates radial preload through a wedge fit, further enhancing the stability and vibration resistance of the connection and preventing loosening or displacement of the connection points during long-term use.

[0044] Example 1:

[0045] Reference Figure 1 , Figure 2 and Figure 3 As shown, when the car crossbeam 1 is installed, the crossbeam 1 and the longitudinal beam 2 are connected by a bracket. A car crossbeam 1 bracket includes a crossbeam 1 and a longitudinal beam 2. The crossbeam 1 has a through cavity 11, and a guide groove 12 is provided at the upper end of the through cavity 11. The longitudinal beam 2 has a notch 21 corresponding to the crossbeam 1. A detachable base 3 is embedded in the notch 21. One end of the base 3 has a connector 31 corresponding to the through cavity 11.

[0046] When installing the crossbeam 1, the two connectors 31 are connected to the two ends of the crossbeam 1 respectively. Then the crossbeam 1 is placed in the notch 21 of the two longitudinal beams 2. One end of the crossbeam 1 will rest in the notch 21, and the base 3 will be embedded in the notch 21. The connector 31 is U-shaped and has a boss 32 corresponding to the guide groove 12. The boss 32 has a convex wing 33 at both ends located on the upper end of the crossbeam 1. The convex wing 33 rests on the crossbeam 1.

[0047] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the buckle 4 provided inside the connector 31 will fix the connector 31 and the crossbeam 1, and the crossbeam 1 will be limited by the buckle 4 to prevent the crossbeam 1 from shifting laterally.

[0048] Specifically, the buckle 4 includes pins 41 that are symmetrically arranged on both sides and slidably inserted inside the connector 31. The pins 41 are provided with guide slopes 411. The crossbeam 1 is provided with pin holes 42 corresponding to the pins 41. The connector 31 is provided with a slide rail 43. The slide rail 43 is provided with guide grooves 12. The slide rail 43 is slidably provided with sliders 431.

[0049] After placing the crossbeam 1 into the notch 21 of the two longitudinal beams 2, so that the base 3 is embedded in the notch 21, rotate the limiting bolt 13 corresponding to the slider 431 that passes through the base 3. The limiting bolt 13 will move toward the slider 431 through the threaded connection with the base 3. The limiting screw will push the slider 431, so that the slider 431 will drive the guide plate 491 that is slidably disposed in the guide groove 12 and connected to the slider 431. The movement of the guide plate 491 will compress the return spring 492 disposed between one end of the guide plate and the guide groove 12.

[0050] Meanwhile, the movement of slider 431 will drive guide blocks 44 on both sides of slider 431 corresponding to guide inclined surfaces 411. Guide blocks 44 will push pin 41 through guide inclined surfaces 411 on pin 41, so that pin 41 is pinned into pin hole 42, thus restricting crossbeam 1. Pin 41 has a pin groove 45, and a stop block 451 connected to connector 31 is slidably arranged in pin groove 45. The movement of pin 41 will compress the clamping spring 46 between one end of stop block 451 and pin groove 45.

[0051] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the pin block 41 is provided with a pin tightening slope 47, and one end of the pin hole 42 is provided with a clamping slope 48 corresponding to the clamping slope 48. The pin tightening slope 47 will clamp against the clamping slope 48, so that when the crossbeam 1 is subjected to lateral force, the pin block 41 and the pin hole 42 form a wedge fit, generating radial preload, which further enhances the stability and vibration resistance of the connection, and prevents the connection point from loosening or displacing during long-term use.

[0052] During disassembly, the limit bolt 13 is rotated to exit the connector 31 through the threaded connection. At this time, the compressed return spring 492 will push the guide plate 491, causing the slider 431 to move together with the limit bolt 13. The slider 431 will drive the guide inclined block 44 to gradually move away from the guide inclined surface 411. The compressed clamping spring 46 will push the pin block 41 to exit the pin hole 42, releasing the restriction on the crossbeam 1.

[0053] Reference Figure 9 and Figure 10 As shown, the connector 31 is also equipped with a latch 5, which prevents the crossbeam 1 from moving axially due to vibration. Its locked state can be unlocked by rotating the limit bolt 13.

[0054] Specifically, the latch 5 includes a locking pin 51 that slides through the lower side of the connector 31, a locking guide slope 511 on the locking pin 51, a locking hole 52 corresponding to the locking pin 51 on the crossbeam 1, and a locking block 53 corresponding to the locking guide slope 511 on the slider 431.

[0055] During the movement of slider 431, slider 431 will drive locking wedge 53 to move together. Locking wedge 53 will push locking pin 51 to move towards locking hole 52 through locking guide wedge 511. Locking pin 51 is provided with sliding groove 55. Sliding block 551 connected to connector 31 is slidably arranged in sliding groove 55. During this process, locking pin 51 will compress the abutment spring 56 provided between one end of sliding block 551 and sliding groove 55.

[0056] The locking pin 51 is perpendicular to the pin block 41. The locking pin 51 is provided with a locking inclined surface 531, and the locking hole 52 is provided with a corresponding abutting inclined surface 54 to prevent the crossbeam 1 from moving axially due to vibration.

[0057] The locking pin 51 and the pin block 41 are arranged vertically to form a constraint. The locking inclined surface 531 and the abutting inclined surface 54 cooperate to produce a self-locking effect, which significantly improves the crossbeam 1's ability to resist lateral loads. The sliding groove 55 is equipped with an abutting spring 56 to absorb vibration energy when the vehicle is bumpy, thus extending the fatigue life of the connection point.

[0058] During disassembly, rotating the limiting bolt 13 through the threaded connection causes it to exit the connector 31. At this time, the compressed return spring 492 pushes the guide plate 491, causing the slider 431 to move together with the limiting bolt 13. As the slider 431 drives the guide inclined block 44 to gradually move away from the guide inclined surface 411, it also drives the locking inclined block 53 to gradually move away from the locking inclined surface 511. At this time, the compressed abutment spring 56 pushes the locking pin 51 out of the lock hole 52, thereby unlocking the crossbeam 1.

[0059] Reference Figure 11 and Figure 12 As shown, a detachable support frame 6 is provided at one end of the connector 31. The inner side of the support frame 6 corresponds to the outer side of the crossbeam 1, and a pressure wing 61 located on the upper end of the convex wing 33 is provided on it. A sealing plate 62 is provided at one end of the connector 31. A sealing hole 63 corresponding to the through cavity 11 and the guide groove 12 is opened on the sealing plate 62. A connecting groove 64 is opened on the connector 31. A connecting rod 65 corresponding to the connecting groove 64 is provided on the sealing plate 62.

[0060] Before installing the connector 31 at both ends of the crossbeam 1, first pass both ends of the crossbeam 1 through the sealing holes 63 opened on the sealing plate 62, then put the support frame 6 on the outside of the crossbeam 1, then connect the connector 31 to both ends of the crossbeam 1 respectively, insert the base 3 into the notch 21 of the longitudinal beam 2, then snap the pressure wing 61 of the support frame 6 onto the convex wing 33, and then insert the connecting rod 65 provided on the sealing plate 62 into the connecting groove 64.

[0061] A slot 66 is provided in the connecting groove 64. A locking tongue 67 is pressed in the slot 66 by a spring. When the connecting rod 65 abuts against the inclined surface 68 at one end of the locking tongue 67 and compresses the spring, the locking tongue 67 moves into the slot 66. At this time, the latch 69 on the connecting rod 65 corresponding to the locking tongue 67 will be aligned with the locking tongue 67. The compressed spring will push the locking tongue 67 into the latch 69.

[0062] Additionally, the pin hole 42 corresponding to the pin block 41 passes through the bracket 6. When the slider 431 drives the guide inclined block 44, the guide inclined block 44 will push the pin block 41 so that the pin block 41 is pinned into the pin hole 42 to limit the crossbeam 1 and the bracket 6. The lock hole 52 corresponding to the locking pin 51 passes through the bracket 6. When the slider 431 drives the locking inclined block 53 to move together, the locking inclined block 53 will push the locking pin 51 to move towards the lock hole 52 through the locking inclined surface 511 to limit the crossbeam 1 and the bracket 6.

[0063] During disassembly, first press the latch 67 to compress the spring and retract it into the slot 66. Then move the sealing plate 62 to disengage the connecting rod 65 from the connecting slot 64, thereby unlocking the sealing plate 62. After the locking pin 51 and the pin block 41 release their restraint on the crossbeam 1, the bracket 6 can be removed.

[0064] Example 2:

[0065] Reference Figure 12 , Figure 13 and Figure 14 As shown, based on Embodiment 1, a threaded connecting rod 7 is slidably passed through the slider 431, and an adjusting ring 71 threadedly connected to it is rotatably disposed on the slider 431. Figure 7 (As shown in the image), a connecting rope 72 is provided on the threaded connecting rod 7. A connecting plate 73 is provided at one end of the connecting rope 72. The connecting plate 73 is slidably connected to the connecting rope 72 on the other side. A guide spring 74 is provided between the connecting plates 73.

[0066] The guide spring 74 pushes the connecting plate 73 to move to both sides. The connecting plate 73 pulls the threaded connecting rod 7 through the connecting rope 72, causing the slider 431 to move and drive the pin block 41 to be radially pushed into the pin hole 42 of the crossbeam 1. The pin groove 45 on the side of the pin block 41 has a built-in stop block 451. When the pin block 41 moves, it compresses the abutting spring 46 between the stop block 451 and the pin groove 45. The locking pin 51 slides through the lower side of the connector 31. The locking pin 51 is provided with a locking guide slope 511. The crossbeam 1 is provided with a locking hole 52 corresponding to the locking pin 51. The slider 431 is provided with a locking oblique block 53 corresponding to the locking guide slope 511.

[0067] The pin clamping ramp 47 abuts against the clamping ramp 48, so that when the crossbeam 1 is subjected to lateral force, the pin block 41 and the pin hole 42 form a wedge fit. The guide spring 74 provides elastic support between the connecting plates 73, dynamically balancing the tension fluctuation of the connecting rope 72. When the slider 431 moves, the helical motion of the threaded connecting rod 7 is converted into the radial thrust of the pin block 41. By rotating the adjusting ring 71, the adjusting ring 71 forces the threaded connecting rod 7 to move, changing the elastic force of the guide spring 74.

[0068] The implementation principle of this invention is as follows:

[0069] (1): After placing the crossbeam 1 in the notch 21 of the two longitudinal beams 2, so that the base 3 will be embedded in the notch 21, rotate the base 3 and the limiting bolt 13 corresponding to the slider 431 is inserted. The limiting bolt 13 will move towards the slider 431 through the threaded connection with the base 3. The limiting screw will push the slider 431, so that the slider 431 will drive the guide plate 491 connected to the slider 431 and slidably disposed in the guide groove 12. The movement of the guide plate 491 will compress the reset spring 492 disposed between one end of the guide plate and the guide groove 12.

[0070] (2): The pin block 41 is provided with a pin tightening slope 47, and one end of the pin hole 42 is provided with a clamping slope 48 corresponding to the clamping slope 48. The pin tightening slope 47 will clamp against the clamping slope 48, so that when the crossbeam 1 is subjected to lateral force, the pin block 41 and the pin hole 42 form a wedge fit, generating radial preload, further enhancing the stability and vibration resistance of the connection, and preventing the connection point from loosening or displacing during long-term use.

[0071] (3): During the movement of slider 431, slider 431 will drive locking wedge 53 to move together. Locking wedge 53 will push locking pin 51 to lock hole 52 through locking wedge 511. Locking pin 51 is provided with sliding groove 55. Sliding block 551 connected to connector 31 is slidably arranged in sliding groove 55. During this process, locking pin 51 will compress the abutting spring 56 provided between one end of sliding block 551 and sliding groove 55.

[0072] (4): The locking pin 51 is provided with a locking slope 531, which abuts against the locking hole 52 and the corresponding abutting slope 54, preventing the crossbeam 1 from moving axially due to vibration.

[0073] The locking pin 51 and the pin block 41 are arranged vertically to form a constraint. The locking inclined surface 531 and the abutting inclined surface 54 cooperate to produce a self-locking effect, which significantly improves the crossbeam 1's ability to resist lateral loads. The sliding groove 55 is equipped with an abutting spring 56 to absorb vibration energy when the vehicle is bumpy, thus extending the fatigue life of the connection point.

[0074] (5): Before installing the connector 31 at both ends of the crossbeam 1, first pass the two ends of the crossbeam 1 through the sealing holes 63 opened on the sealing plate 62, then put the bracket 6 on the outside of the crossbeam 1, then connect the connector 31 to both ends of the crossbeam 1 respectively, insert the base 3 into the notch 21 of the longitudinal beam 2, then clip the pressure wing 61 of the bracket 6 onto the convex wing 33, and then insert the connecting rod 65 set on the sealing plate 62 into the connecting groove 64.

[0075] (6): A slot 66 is provided in the connecting groove 64. A locking tongue 67 is pressed in the slot 66 by a spring. When the connecting rod 65 abuts against the inclined surface 68 at one end of the locking tongue 67 and compresses the spring, the locking tongue 67 moves into the slot 66. At this time, the slot 69 on the connecting rod 65 corresponding to the locking tongue 67 will be aligned with the locking tongue 67. The compressed spring will push the locking tongue 67 into the slot 69.

[0076] (7): The guide spring 74 provides elastic support between the connecting plates 73, dynamically balancing the tension fluctuation of the connecting rope 72; when the slider 431 moves, the helical motion of the threaded connecting rod 7 is converted into the radial thrust of the pin block 41.

[0077] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A vehicle crossbeam (1) bracket, comprising a crossbeam (1) and a longitudinal beam (2), wherein the crossbeam (1) has a cavity (11) and a guide groove (12) is provided at the upper end of the cavity (11), and the longitudinal beam (2) has a notch (21) corresponding to the crossbeam (1), characterized in that: A detachable base (3) is embedded in the notch (21), and one end of the base (3) is constructed with a connector (31) corresponding to the through cavity (11). The connector (31) is shaped like a square and has a boss (32) corresponding to the guide groove (12) on it. The boss (32) has a convex wing (33) at both ends located on the upper end of the crossbeam (1). The connector (31) is equipped with a buckle (4). The buckle (4) includes pins (41) that are symmetrically arranged on both sides and slidably inserted inside the connector (31). A guide slope (411) is provided on the pin (41). A pin hole (42) corresponding to the pin (41) is opened on the crossbeam (1). A slide rail (43) is provided inside the connector (31). A slider (431) is slidably arranged on the slide rail (43). A guide slope (44) corresponding to the guide slope (411) is provided on both sides of the slider (431). The connector (31) is equipped with a latch (5); The latch (5) includes a locking pin (51) that slides through the lower side of the connector (31), a locking guide slope (511) is provided on the locking pin (51), a locking hole (52) corresponding to the locking pin (51) is provided on the crossbeam (1), and a locking block (53) corresponding to the locking guide slope (511) is provided on the slider (431).

2. The automobile crossbeam (1) bracket according to claim 1, characterized in that: The buckle (4) also includes a pin groove (45) on the pin block (41), a stop block (451) connected to the connector (31) is slidably arranged in the pin groove (45), and a retaining spring (46) is arranged between one end of the stop block (451) and the pin groove (45).

3. The automobile crossbeam (1) bracket according to claim 1, characterized in that: The pin block (41) is provided with a pin tightening slope (47), and one end of the pin hole (42) is provided with a tightening slope (48) corresponding to the tightening slope (48).

4. The automobile crossbeam (1) bracket according to claim 1, characterized in that: The locking pin (51) is provided with a locking bevel (531), and the locking hole (52) is provided with a counteracting bevel (54) corresponding to the locking bevel (531).

5. The automobile crossbeam (1) bracket according to claim 1, characterized in that: A sliding groove (55) is provided on the locking pin (51), and a sliding block (551) connected to the connector (31) is slidably arranged in the sliding groove (55). A contact spring (56) is provided between one end of the sliding block (551) and the sliding groove (55).

6. The automobile crossbeam (1) bracket according to claim 1, characterized in that: A guide groove (49) is provided on the slide rail (43), and a guide plate (491) connected to the slider (431) is slidably arranged in the guide groove (49). A return spring (492) is provided between one end of the guide plate (491) and the guide groove (49).

7. The automobile crossbeam (1) bracket according to claim 1, characterized in that: The base (3) is rotatably fitted with a limiting bolt (13) corresponding to the slider (431), and the limiting bolt (13) is threadedly connected to the base (3).

8. The automobile crossbeam (1) bracket according to claim 1, characterized in that: One end of the connector (31) is provided with a detachable support frame (6), the inner side of the support frame (6) corresponds to the outer side of the crossbeam (1), and a pressure wing (61) located on the upper end of the convex wing (33) is provided on it.

9. The automobile crossbeam (1) bracket according to claim 1, characterized in that: One end of the connector (31) is provided with a sealing plate (62), and the sealing plate (62) is provided with a sealing hole (63) corresponding to the through cavity (11) and the guide groove (12). The connector (31) is provided with a connecting groove (64), and the sealing plate (62) is provided with a connecting rod (65) corresponding to the connecting groove (64). A slot (66) is provided in the connecting groove (64), and a locking tongue (67) is provided in the slot (66) by a spring. One end of the locking tongue (67) is constructed with an inclined surface (68), and the connecting rod (65) is provided with a slot (69) corresponding to the locking tongue (67).

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