A fixed connection assembly with improved connection strength and a method of using the same

Abstract

The application relates to the technical field of automobile luggage rack connecting assemblies, in particular to a fixed connecting assembly capable of improving connecting strength and a use method thereof, which comprises a roof original luggage rack fixing rod and connecting bolts, the upper end of the roof original luggage rack fixing rod is connected with a connecting assembly, and the upper end of the connecting assembly is fixedly connected with a roof luggage rack through the connecting bolts; the connecting assembly comprises an assembly shell, the upper end of the assembly shell is fixedly connected with a connecting block, the inner sides of the assembly shell are fixedly connected with limiting columns at both ends, the outer sides of the limiting columns are provided with second springs, and the outer sides of the limiting columns are slidably connected with clamping plates; in the application, the sealing buffer mechanism can further improve the connecting tightness between the connecting assembly and the roof original luggage rack fixing rod, thereby improving the connecting strength of the connecting position; meanwhile, in the installation process, the adsorption between the sucker and the roof original luggage rack fixing rod can prevent the luggage rack from being displaced under the condition of frequent emergency braking of the automobile.

Description

Technical Field

[0001] This invention relates to the field of automotive roof rack connection components, specifically a fixed connection component that can improve connection strength and its usage method. Background Technology

[0002] Car roof racks, used to store large items, need to be stably installed on the upper part of the car roof using connecting components to ensure safety while the car is in motion.

[0003] The existing car roof rack connection components mainly include the following types:

[0004] Bolted connections: The advantages of bolted connections are simple structure, low cost, and easy assembly and disassembly;

[0005] Riveted connections: The advantages of riveted connections are high strength and good sealing performance;

[0006] Welded connections: The advantages of welded connections are high strength, good sealing, and good corrosion resistance;

[0007] Adhesive bonding: The advantages of adhesive bonding are compact structure, seamlessness, and light weight;

[0008] Each of the above connection methods has its own advantages and disadvantages. Bolt connections are easy to install and remove, so they are often used in the installation of car roof racks.

[0009] However, in actual use, if the car frequently brakes suddenly, the roof rack itself will shift due to inertia. After a period of use, the position of the roof rack needs to be adjusted, which poses a significant safety hazard. Therefore, this paper proposes a fixed connection component that can improve the connection strength and its usage method to address the above problems. Summary of the Invention

[0010] The purpose of this invention is to provide a fixed connection component that can improve connection strength and its usage method, so as to solve the problem that when a car roof rack connection component using bolt connection is used, if the car frequently brakes suddenly, the roof rack itself will shift due to inertia. After a period of use, the position of the roof rack needs to be adjusted, which poses a significant safety hazard.

[0011] To achieve the above objectives, the present invention provides the following technical solution:

[0012] A fixed connection component that can improve connection strength and its method of use, including a roof rack fixing rod and connecting bolts, wherein the upper end of the roof rack fixing rod is connected to the connecting component, and the upper end of the connecting component is fixedly connected to the roof rack by the connecting bolts;

[0013] The connecting assembly includes a component housing, a connecting block fixedly connected to the upper end of the component housing, limit posts fixedly connected to both ends of the inner side of the component housing, a second spring provided on the outer side of the limit posts, a clamping plate slidably connected to the outer side of the limit posts, a sealing buffer mechanism fixedly connected to the bottom end of the component housing, a positioning mechanism fixedly connected between the component housing and the sealing buffer mechanism, locking bolts provided on the inner side of both ends of the component housing, and a bolt locking mechanism fixedly connected to both ends of the component housing.

[0014] The clamping plate includes a curved plate body. A wedge block is fixedly connected to one end of the curved plate body near the center point of the component shell. Through holes are opened on both sides of the curved plate body. Spring limit seats are fixedly connected to both sides of the curved plate body. The locking bolt includes a fixing nut. A threaded rod is fixedly connected to one end of the fixing nut. A positioning circular plate is rotatably connected to the other end of the threaded rod. A toothed groove is opened on the outer side of the fixing nut. The positioning mechanism includes a suction cup. A cavity is opened on the inner side of the suction cup. A hollow tube column is fixedly connected to the upper end of the suction cup. A rubber piston is slidably connected to the inner side of the hollow tube column. A movable vertical rod is fixedly connected to the top of the rubber piston. A guide rod is slidably connected to the inner side of the top of the movable vertical rod. A first spring is provided on the outer side of the guide rod. A square hole is opened on the inner side of the movable vertical rod.

[0015] As a further optimization of the present invention, the clamping plates are provided in two forms, the main body of the bent plate is L-shaped, and multiple spring limiting seats and through holes are provided. The spring limiting seats and through holes are on the same axis. The two ends of the second spring are respectively set inside the spring limiting seats provided inside the two clamping plates. The main body of the bent plate is slidably connected to the limiting post through the through hole, and the limiting posts are parallel to each other.

[0016] As a further optimization of the present invention, the component housing includes a housing body, threaded holes are provided on the inner sides of the front and rear ends of the housing body, and threaded rods are bolted to the inner sides of the threaded holes. First limiting holes are provided on both sides of the bottom end of the housing body. The bottom end of the clamping plate passes through the first limiting holes. A first central hole is fixedly connected to the middle of the bottom end of the component housing, and the first central hole is fixedly connected to the upper end of the suction cup.

[0017] As a further optimization of the present invention, the sealing buffer mechanism includes a sealing rubber pad, and a second limiting hole is provided on both sides of the sealing rubber pad. The second limiting hole corresponds one-to-one with the first limiting hole, and the cross-sectional size of the second limiting hole is equal to that of the first limiting hole. A second central hole is provided in the middle of the sealing rubber pad. The second central hole is coaxial with the first central hole, and the inner side of the second central hole is fixedly connected to the bottom of the suction cup.

[0018] As a further optimization of the present invention, the connecting block is T-shaped, the positioning circular plate is located inside the component housing, the positioning circular plate is fixedly connected to the clamping plate, and the included angle between the clamping plate and the threaded rod is 90°.

[0019] As a further optimization of the present invention, the bolt locking mechanism includes a spring telescopic rod, one end of which is rotatably connected to a fixed plate via a rotating shaft, the fixed plate is fixedly connected to the component housing, the included angle between the fixed plate and the component housing is 90°, the other end of which is fixedly connected to an arc-shaped limiting plate, and the inner side of the arc-shaped limiting plate is fixedly connected with semi-circularly distributed teeth.

[0020] As a further optimization of the present invention, there are four connecting components, two original roof rack fixing rods, the connecting components are distributed at both ends of the original roof rack fixing rods, there is one roof rack, and the connecting components are distributed at the lower ends of the four corners of the roof rack.

[0021] As a further optimization of the present invention, wherein: S1: The position of the connecting component is located according to the size of the roof rack and the original roof rack fixing rod: First, the length of the roof rack and the original roof rack fixing rod is measured. The main purpose of the measurement is to align the center positions of the roof rack and the original roof rack fixing rod. Then, the installation position of the connecting component on the upper end of the original roof rack fixing rod is located and marked according to the preset installation position at the lower end of the roof rack.

[0022] S2: Install the connecting component: Install the connecting component at the marked position on the original roof rack mounting rod. During installation, firstly, the staff will press the lower end of the component housing against the marked position on the original roof rack mounting rod using the sealing and buffering mechanism. Next, rotate the locking bolt to push the clamping plate towards the center point of the component housing. The clamping plates on both sides of the component housing will simultaneously clamp the original roof rack mounting rod to achieve a connection and fixation between the connecting component and the original roof rack mounting rod. During this process, the clamping plate will push the inclined block into the square hole and push the moving vertical rod upward. As the moving vertical rod moves upward, it will drive the rubber piston upward, thereby creating a negative pressure inside the suction cup to ensure the stability of the connection between the suction cup and the roof rack. Finally, use the connecting bolts to fix the roof rack to the connecting component to complete the installation of the roof rack.

[0023] S3: Positioning the locking bolts: After the locking bolts are installed, the staff pulls the arc-shaped limiting plate to fit tightly against the fixing nut. The locking bolts are positioned by the teeth on the outside of the fixing nut and the teeth inside the arc-shaped limiting plate, thus preventing the locking bolts from coming loose during vehicle operation.

[0024] S4: Overall calibration and commissioning: The installation position of the roof rack is measured again after installation to ensure the stability and aesthetics of the roof rack during installation and use.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. In this invention, the connecting components can improve the stability of the car roof rack installation while ensuring convenient disassembly and assembly. The sealing and buffering mechanism can further improve the tightness of the connection between the connecting components and the original roof rack fixing rod, thereby improving the connection strength at the connection point. At the same time, during the installation process, the suction cup can be used to adhere to the original roof rack fixing rod, which can prevent the roof rack from shifting under frequent emergency braking of the car, further improving the safety of the roof rack during use.

[0027] 2. In this invention, the bolt locking mechanism can limit the locking bolt used for fixing. The teeth on the inner side of the fixing nut and the teeth on the outer side of the arc-shaped limiting plate are closely attached to prevent the locking bolt from rotating in the opposite direction and causing the thread to come loose during the bumpy ride of the car.

[0028] 3. In this invention, by setting two hollow tube columns and a piston, the overall amount and effect of air extraction inside the cavity can be improved, further enhancing the suction capacity of the suction cup during use. At the same time, the edge of the suction cup is pressed by the bottom end of the outer shell and the bottom end of the sealing rubber pad, which can prevent air leakage at the edge of the suction cup and make it more stable. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at point A in the middle;

[0031] Figure 3 This is a schematic diagram of the connection component structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the component housing structure of the present invention;

[0033] Figure 5This is a schematic diagram of the clamping plate structure of the present invention;

[0034] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point B;

[0035] Figure 7 This is a schematic diagram of the bolt locking mechanism of the present invention;

[0036] Figure 8 This is a schematic diagram of the locking bolt structure of the present invention;

[0037] Figure 9 This is a schematic diagram of the positioning mechanism structure of the present invention;

[0038] Figure 10 This is a schematic diagram of the internal structure of the suction cup of the present invention;

[0039] Figure 11 This is a schematic diagram of the mounting position structure of the second spring in this invention.

[0040] In the diagram: 1. Roof rack; 2. Original roof rack fixing rod; 3. Connecting assembly; 31. Component housing; 311. Housing body; 312. Threaded hole; 313. First limiting hole; 314. First center hole; 32. Clamping plate; 321. Curved plate body; 322. Wedge block; 323. Spring limiting seat; 324. Through hole; 33. Sealing buffer mechanism; 331. Sealing rubber gasket; 332. Second limiting hole; 333. Second center hole; 34. Connecting block; 35. Bolt locking mechanism; 36. 1. Spring telescopic rod; 352. Arc-shaped limiting plate; 353. Fixing plate; 354. Rotating shaft; 355. Tooth; 36. Locking bolt; 361. Fixing nut; 362. Threaded rod; 363. Tooth groove; 364. Positioning round plate; 37. Positioning mechanism; 371. Suction cup; 372. Hollow tube column; 373. Moving vertical rod; 374. Guide rod; 375. First spring; 376. Square hole; 377. Cavity; 378. Rubber piston; 38. Limiting post; 39. Second spring; 4. Connecting bolt. Detailed Implementation

[0041] Please see Figure 1-11 The present invention provides a technical solution:

[0042] A fixed connection component that can improve connection strength and its usage method include a roof rack fixing rod 2 and a connecting bolt 4. The upper end of the roof rack fixing rod 2 is connected to a connecting component 3, and the upper end of the connecting component 3 is fixedly connected to the roof rack 1 by the connecting bolt 4, so that the roof rack 1 can be stably installed in actual use.

[0043] The connecting component 3 includes a component housing 31, a connecting block 34 fixedly connected to the upper end of the component housing 31, a limit post 38 fixedly connected to both ends of the inner side of the component housing 31, a second spring 39 provided on the outer side of the limit post 38, a clamping plate 32 slidably connected to the outer side of the limit post 38, a sealing buffer mechanism 33 fixedly connected to the bottom end of the component housing 31, a positioning mechanism 37 fixedly connected between the component housing 31 and the sealing buffer mechanism 33, a locking bolt 36 provided on the inner side of both ends of the component housing 31, and a bolt locking mechanism 35 fixedly connected to both ends of the component housing 31, which can ensure the convenience of the roof rack 1 during installation.

[0044] The clamping plate 32 includes a curved plate body 321. A wedge block 322 is fixedly connected to one end of the curved plate body 321 near the center point of the component housing 31. Through holes 324 are provided on both sides of the curved plate body 321. Spring limit seats 323 are fixedly connected to both sides of the curved plate body 321. The locking bolt 36 includes a fixing nut 361. A threaded rod 362 is fixedly connected to one end of the fixing nut 361, and a positioning circular plate 364 is rotatably connected to the other end of the threaded rod 362. A toothed groove 363 is provided on the outer side of the fixing nut 361. The positioning mechanism 37 includes a suction... The suction cup 371 has a cavity 377 on its inner side. A hollow tube column 372 is fixedly connected to the upper end of the suction cup 371. A rubber piston 378 is slidably connected to the inner side of the hollow tube column 372. A movable vertical rod 373 is fixedly connected to the top of the rubber piston 378. A guide rod 374 is slidably connected to the inner side of the top of the movable vertical rod 373. A first spring 375 is provided on the outer side of the guide rod 374. A square hole 376 is opened on the inner side of the movable vertical rod 373. The movable vertical rod 373 can be stably moved up and down by the movement of the bending plate body 321.

[0045] Two clamping plates 32 are provided. The bent plate body 321 is L-shaped. Multiple spring limit seats 323 and through holes 324 are provided. The spring limit seats 323 and through holes 324 are on the same axis. The two ends of the second spring 39 are respectively set inside the spring limit seats 323 inside the two clamping plates 32. The bent plate body 321 is slidably connected to the limit posts 38 through the through holes 324, and the limit posts 38 are parallel to each other. This arrangement can ensure the stability of the bent plate body 321 during movement. The component housing 31 includes a housing body 311. Threaded holes are opened on the inner sides of the front and rear ends of the housing body 311. 312, threaded rods 362 are bolted to the inner side of threaded holes 312, first limiting holes 313 are opened on both sides of the bottom end of the outer shell 311, the bottom end of the clamping plate 32 passes through the first limiting holes 313, and a first center hole 314 is fixedly connected to the middle of the bottom end of the component outer shell 31, the first center hole 314 is fixedly connected to the upper end of the suction cup 371; the sealing buffer mechanism 33 includes a sealing rubber gasket 331, and second limiting holes 332 are opened on both sides of the sealing rubber gasket 331. The second limiting holes 332 correspond one-to-one with the first limiting holes 313, and the second limiting holes 332 and the first limiting holes 313 are also connected. The 13 components have equal cross-sectional sizes. A second central hole 333 is formed in the center of the sealing rubber gasket 331. The second central hole 333 is coaxial with the first central hole 314. The inner side of the second central hole 333 is fixedly connected to the bottom of the suction cup 371, which can further limit the suction cup 371 to ensure its stability during use. The connecting block 34 is T-shaped. The positioning circular plate 364 is positioned inside the component housing 31. The positioning circular plate 364 is fixedly connected to the clamping plate 32. The included angle between the clamping plate 32 and the threaded rod 362 is 90°, which can ensure the threaded rod... During the displacement process, the clamping plate 32 can be stably pushed to move during the displacement process; the bolt locking mechanism 35 includes a spring telescopic rod 351, one end of the spring telescopic rod 351 is rotatably connected to the fixed plate 353 through a rotating shaft 354, the fixed plate 353 is fixedly connected to the component housing 31, the included angle between the fixed plate 353 and the component housing 31 is 90°, the other end of the spring telescopic rod 351 is fixedly connected to the arc-shaped limiting plate 352, and the inner side of the arc-shaped limiting plate 352 is fixedly connected with semi-circularly distributed teeth 355, which can stably limit the locking bolt 36 after installation;

[0046] There are four connecting components 3, two original roof rack fixing rods 2, and connecting components 3 are distributed at both ends of the original roof rack fixing rods 2. There is one roof rack 1, and connecting components 3 are distributed at the lower ends of the four corners of the roof rack 1. In actual use, this can further improve the stability of the roof rack 1 after installation.

[0047] S1: Position the connecting component 3 according to the dimensions of the roof rack 1 and the original roof rack fixing rod 2: First, measure the length of the roof rack 1 and the original roof rack fixing rod 2. The main purpose of the measurement is to align the center positions of the roof rack 1 and the original roof rack fixing rod 2. Then, according to the preset installation position at the lower end of the roof rack 1, position and mark the installation position of the connecting component 3 at the upper end of the original roof rack fixing rod 2. Through the above operations, it is easy to determine the installation position of the connecting component 3.

[0048] S2: Install the connecting component 3: Install the connecting component 3 at the marked position on the original roof rack fixing rod 2. During installation, firstly, the worker presses the lower end of the component housing 31 against the marked position on the original roof rack fixing rod 2 using the sealing buffer mechanism 33. Then, the worker rotates the locking bolt 36 to push the clamping plate 32 towards the center point of the component housing 31. The clamping plates 32 on both sides of the component housing 31 simultaneously clamp the original roof rack fixing rod 2, thus achieving the connection between the connecting component 3 and the original roof rack fixing rod 2. During the fixing process, the clamping plate 32 pushes the inclined block 322 into the square hole 376 and pushes the moving vertical rod 373 upward. As the moving vertical rod 373 moves upward, it drives the rubber piston 378 upward, thereby creating a negative pressure inside the suction cup 371 to ensure the stability of the connection between the suction cup 371 and the roof rack 1. Finally, the connecting bolts 4 are used to fix the roof rack 1 to the connecting assembly 3 to achieve the installation of the roof rack 1. Through the above operations, the connecting assembly 3 and the roof rack 1 can be stably connected together.

[0049] S3: Positioning the locking bolt 36: After the locking bolt 36 is installed, the worker pulls the arc-shaped limiting plate 352 to be tightly against the fixing nut 361. The toothed groove 363 on the outside of the fixing nut 361 is tightly against the toothed teeth 355 fixedly connected inside the arc-shaped limiting plate 352, thereby positioning the locking bolt 36 and preventing the locking bolt 36 from coming loose during vehicle operation. This further limits the position of the locking bolt 36 after installation.

[0050] S4: Overall calibration and commissioning: The installation position of the roof rack 1 after installation is measured again to ensure the stability and aesthetics of the roof rack 1 during installation and use;

[0051] While ensuring convenient installation and removal of the car roof rack, it further improves the stability of the installation. The sealing and buffering mechanism further enhances the tightness of the connection between the connecting components and the original roof rack fixing rod, thereby increasing the connection strength at the connection point. At the same time, during the installation process, the suction cups adsorb to the original roof rack fixing rod, preventing the roof rack from shifting under frequent emergency braking, further improving the safety of the roof rack during use.

[0052] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A fixed connection assembly that can improve connection strength, comprising a roof rack fixing rod (2) and a connecting bolt (4), characterized in that: The original roof rack fixing rod (2) is connected to a connecting component (3) at its upper end, and the roof rack (1) is fixedly connected to the upper end of the connecting component (3) by a connecting bolt (4). The connecting assembly (3) includes a component housing (31), a connecting block (34) is fixedly connected to the upper end of the component housing (31), a limit post (38) is fixedly connected to both ends of the inner side of the component housing (31), a second spring (39) is provided on the outer side of the limit post (38), a clamping plate (32) is slidably connected to the outer side of the limit post (38), a sealing buffer mechanism (33) is fixedly connected to the bottom end of the component housing (31), a positioning mechanism (37) is fixedly connected between the component housing (31) and the sealing buffer mechanism (33), a locking bolt (36) is provided on the inner side of both ends of the component housing (31), and a bolt locking mechanism (35) is fixedly connected to both ends of the component housing (31). The clamping plate (32) includes a curved plate body (321). A wedge block (322) is fixedly connected to one end of the curved plate body (321) near the center point of the component housing (31). Through holes (324) are provided on both sides of the curved plate body (321). Spring limit seats (323) are fixedly connected to both sides of the curved plate body (321). The locking bolt (36) includes a fixing nut (361). A threaded rod (362) is fixedly connected to one end of the fixing nut (361). A positioning round plate (364) is rotatably connected to the other end of the threaded rod (362). A positioning round plate (364) is provided on the outer side of the fixing nut (361). The positioning mechanism (37) includes a toothed groove (363) and a suction cup (371). A cavity (377) is provided inside the suction cup (371). A hollow tube column (372) is fixedly connected to the upper end of the suction cup (371). A rubber piston (378) is slidably connected to the inner side of the hollow tube column (372). A movable vertical rod (373) is fixedly connected to the top end of the rubber piston (378). A guide rod (374) is slidably connected to the inner side of the top end of the movable vertical rod (373). A first spring (375) is provided on the outer side of the guide rod (374). A square hole (376) is provided inside the movable vertical rod (373).

2. A fixed connection assembly for improving connection strength according to claim 1, characterized in that: Two clamping plates (32) are provided. The bending plate body (321) is L-shaped. Multiple spring limit seats (323) and through holes (324) are provided. The spring limit seats (323) and through holes (324) are on the same axis. The two ends of the second spring (39) are respectively set inside the spring limit seats (323) provided inside the two clamping plates (32). The bending plate body (321) is slidably connected to the limit post (38) through the through hole (324), and the limit posts (38) are parallel to each other.

3. A fixed connection assembly for improving connection strength according to claim 1, characterized in that: The component housing (31) includes a housing body (311). Threaded holes (312) are provided on the inner sides of the front and rear ends of the housing body (311). Threaded rods (362) are bolted to the inner sides of the threaded holes (312). First limiting holes (313) are provided on both sides of the bottom end of the housing body (311). The bottom end of the clamping plate (32) passes through the first limiting hole (313). A first central hole (314) is fixedly connected to the middle of the bottom end of the component housing (31). The first central hole (314) is fixedly connected to the upper end of the suction cup (371).

4. A fixed connection assembly for improving connection strength according to claim 1, characterized in that: The sealing buffer mechanism (33) includes a sealing rubber pad (331). The sealing rubber pad (331) has a second limiting hole (332) on both sides. The second limiting hole (332) corresponds to the first limiting hole (313) one by one, and the cross-sectional size of the second limiting hole (332) and the first limiting hole (313) are equal. The sealing rubber pad (331) has a second central hole (333) in the middle. The second central hole (333) is coaxial with the first central hole (314). The inner side of the second central hole (333) is fixedly connected to the bottom of the suction cup (371).

5. A fixed connection assembly for improving connection strength according to claim 1, characterized in that: The connecting block (34) is T-shaped, the positioning round plate (364) is located inside the component housing (31), the positioning round plate (364) is fixedly connected to the clamping plate (32), and the included angle between the clamping plate (32) and the threaded rod (362) is 90°.

6. A fixed connection assembly for improving connection strength according to claim 1, characterized in that: The bolt locking mechanism (35) includes a spring telescopic rod (351). One end of the spring telescopic rod (351) is rotatably connected to the fixed plate (353) via a rotating shaft (354). The fixed plate (353) is fixedly connected to the component housing (31). The included angle between the fixed plate (353) and the component housing (31) is 90°. The other end of the spring telescopic rod (351) is fixedly connected to the arc-shaped limiting plate (352). The inner side of the arc-shaped limiting plate (352) is fixedly connected with semi-circularly distributed teeth (355).

7. A fixed connection assembly for improving connection strength according to claim 1, characterized in that: There are four connecting components (3), two original roof rack fixing rods (2), the connecting components (3) are distributed at both ends of the original roof rack fixing rods (2), there is one roof rack (1), and the connecting components (3) are distributed at the lower ends of the four corners of the roof rack (1).

8. The method of using a fixed connection assembly that can improve connection strength according to claim 1, characterized in that: S1: Position the connecting component (3) according to the dimensions of the roof rack (1) and the original roof rack fixing rod (2): First, measure the length of the roof rack (1) and the original roof rack fixing rod (2). The main purpose of the measurement is to align the center positions of the roof rack (1) and the original roof rack fixing rod (2). Then, position and mark the installation position of the connecting component (3) on the upper end of the original roof rack fixing rod (2) according to the preset installation position at the lower end of the roof rack (1). S2: Install the connecting component (3): Install the connecting component (3) at the marked position on the original roof rack fixing rod (2). During the installation process, firstly, the staff will press the lower end of the component housing (31) against the marked position on the original roof rack fixing rod (2) through the sealing buffer mechanism (33). Then, rotate the locking bolt (36) to push the clamping plate (32) to move towards the center point of the component housing (31). The clamping plates (32) set on both sides of the component housing (31) will clamp the original roof rack fixing rod (2) at the same time to realize the connection between the connecting component (3) and the vehicle. The connection between the original roof rack fixing rods (2) is fixed. During this process, the clamping plate (32) will push the inclined block (322) to move into the square hole (376) and push the moving vertical rod (373) to move upward. During the upward movement of the moving vertical rod (373), it will drive the rubber piston (378) to move upward, thereby creating a negative pressure inside the suction cup (371) to ensure the stability of the connection between the suction cup (371) and the roof rack (1). Finally, the roof rack (1) is fixedly connected to the connecting assembly (3) using the connecting bolts (4) to realize the installation of the roof rack (1). S3: Positioning the locking bolt (36): After the locking bolt (36) is installed, the staff pulls the arc-shaped limiting plate (352) to fit tightly against the fixing nut (361). The locking bolt (366) is positioned by the toothed groove (363) on the outside of the fixing nut (361) and the toothed teeth (355) inside the arc-shaped limiting plate (352) that are fixedly connected. This prevents the locking bolt (36) from coming loose during vehicle operation. S4: Overall calibration and commissioning: The installation position of the roof rack (1) after installation is measured again to ensure the stability and aesthetics of the roof rack (1) during installation and use.

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