Mounting structure of automobile luggage rack
By using a slider and gear meshing structure within the support rail, the problem of easy deformation of the car roof rack screw is solved, enabling stable installation and safe use on roofs of different widths.
Patent Information
- Application Number
- CN202520035437.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-08
AI Technical Summary
The screws of existing car roof racks are prone to bending and deformation due to lateral forces after adjustment, making them difficult to disassemble or causing them to fall off, posing a safety hazard.
The system employs a slider and gear meshing structure within the support rail. The slider slides within the support rail and meshes with the gear. The anti-slip pads and the friction between the slider and the inner wall of the support rail, along with the support bars, enhance the structural strength and ensure the stability of the slider. It is then secured to the roof vertical bars via clamps.
This improves the stability and safety of the roof rack, preventing screw deformation and detachment, and ensuring stable installation and safe use of the roof rack on different roof widths.
Smart Images

Figure CN223618668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, specifically to an installation structure for a car roof rack. Background Technology
[0002] A car roof rack is a bracket installed on the roof of a vehicle for attaching items. It is also called a roof rack, roof crossbar, roof luggage rack, car roof bracket, etc. It works with roof boxes and roof frames to carry travel luggage, increasing interior space. It can also carry other sports equipment such as skis, bicycles, sailboats, etc. Car roof racks are mainly installed on vertical bars on the roof. However, some vehicles do not have vertical bars on the roof, so holes are drilled in the roof for installation.
[0003] A car roof rack mounting bracket with application number 202420428370.4 includes a connecting rod body, a mounting bracket body, and an adjustment mechanism. The adjustment mechanism includes a mounting sleeve detachably disposed at the end of the connecting rod body, a retractable channel opened on the side of the mounting bracket body opposite the mounting sleeve, and a screw rod transversely disposed in the retractable channel. A threaded sleeve is threadedly connected to the shaft of the screw rod, and the outer wall of the threaded sleeve is fixedly connected to the inner wall of the open end of the retractable channel. A drive cavity is provided in the inner wall of the mounting sleeve, and a power component for driving the screw rod to rotate is provided in the drive cavity. A cleaning sleeve is provided on the shaft of the screw rod located outside the mounting bracket body. This utility model, through the setting of the adjustment mechanism, can quickly adjust the distance between the mounting bracket body and the connecting rod body according to the distance between the two longitudinal bars of the roof, thereby enhancing the applicability of the roof rack and allowing the roof rack to be installed on two roof longitudinal bars with different distances.
[0004] This technical solution adjusts the distance between the two mounting brackets using a screw to accommodate roofs of different widths. However, after adjustment, the screw extends out, and the force is mainly borne by the area between the mounting bracket and the mounting sleeve. When loaded with heavy objects or used for a long time, the screw is easily affected by lateral forces and may bend or deform. In mild cases, the screw deformation may cause uneven threads, making it difficult to disassemble and replace the roof rack. In severe cases, the screw may break, causing the roof rack to fall off. If the roof rack falls off while driving, it can easily cause traffic accidents and damage the roof. Utility Model Content
[0005] Therefore, the purpose of this utility model is to provide an installation structure for a car roof rack to solve the technical problems mentioned in the background section.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an installation structure for a car roof rack, including a support rail, wherein a first slider and a second slider are respectively arranged inside the support rail; a bolt passes through one side of the first slider, and a first rack is fixed to the other side of the first slider; a gear is connected inside the second slider, and a torsion spring shaft is connected to the top of the gear; two abutments are arranged inside the second slider, and anti-slip pads are connected to the outer surface of one abutment and the back of the other abutment; two second racks and four support bars are connected to the back of one abutment and the outer surface of the other abutment.
[0007] By adopting the above technical solution, the user places the support rail above the roof vertical bar. Then, the operator slides the first and second clamping plates, while the first and second sliders slide within the support rail to accommodate roofs of different widths. The first and second sliders are then brought into contact with each other by tightening the bolts. Simultaneously, the first rack enters the second slider and meshes with a gear, causing the gear to rotate. This rotation of the gear meshes with four second racks, driving two abutments to extend from the second slider and contact the inner wall of the support rail via anti-slip pads. The friction between the anti-slip pads and the inner wall of the support rail prevents the support rail from sliding freely on the first and second sliders after the bolts are tightened. At the same time, the support bars support the abutments to increase their structural strength.
[0008] Furthermore, both the first and second sliders are slidably connected to the support rail, and the bolt abuts against the first slider, while the bolt is threadedly connected to the second slider.
[0009] By adopting the above technical solution, the workers slide the first clamping plate and the second clamping plate, while the first slider and the second slider slide within the support rail to adapt to roofs of different widths. Then, the locking bolts are used to make the first slider and the second slider fit together.
[0010] Furthermore, the gears mesh with the first rack and the second rack respectively, and the abutment and the support bar are slidably connected to the second slider.
[0011] By adopting the above technical solution, while tightening the bolt to make the first slider close to the second slider, the first rack will enter the second slider and mesh with the gear to make the gear rotate. After the gear rotates, it meshes with the four second racks to drive the two abutments to extend out of the second slider.
[0012] Furthermore, the anti-slip mat is made of silicone material and has a rough surface.
[0013] By adopting the above technical solution, the friction between the anti-slip pad and the inner wall of the support rail prevents the support rail from sliding freely on the first and second sliders after the bolts are tightened.
[0014] Furthermore, a first clamping plate is fixed to the bottom of the first slider, and a second clamping plate is fixed to the bottom of the second slider.
[0015] By adopting the above technical solution, the first slider and the second slider are made to fit together by tightening the bolts, thereby making the first clamping plate and the second clamping plate fit together to clamp the vertical bar on the roof and complete the installation.
[0016] Furthermore, there are four of each of the first and second clamping plates, and the cross-sections of the four first and second clamping plates are all "C" shaped, and the four first and second clamping plates are mirror images of each other.
[0017] By adopting the above technical solution, the two vertical bars on the roof are clamped together by four first clamps and four second clamps, thereby completing the installation of the roof rack.
[0018] Furthermore, both the first and second clamping plates are provided with clamping pads, and the clamping pads are made of silicone material.
[0019] By adopting the above technical solution, the friction between the first and second clamping plates and the roof vertical bar is increased by using silicone clamping pads, thus preventing the structure from becoming loose.
[0020] Furthermore, a vertical rod is connected to the outer surface of the support rail, and a horizontal rod is connected to one side of the vertical rod. A vertical pole is connected to the top of the vertical rod, and a diagonal brace is connected to the back of the support rail.
[0021] By adopting the above technical solution, the vertical bars and horizontal bars facilitate the formation of the bottom surface of the luggage rack, preventing items from falling off the bottom of the luggage rack. The uprights form the outer perimeter of the luggage rack, preventing items from falling off the sides of the luggage rack. The diagonal braces create an outward projection, increasing the placement space of the luggage rack.
[0022] Furthermore, multiple vertical bars, horizontal bars, uprights, and diagonal braces are provided.
[0023] By adopting the above technical solution, a luggage rack is formed by multiple vertical bars, horizontal bars, upright bars and diagonal braces, so that users can put their items into the luggage rack for transportation. During the process, the items need to be secured with straps to prevent them from falling off and causing safety hazards.
[0024] In summary, the present invention has the following main advantages:
[0025] 1. This utility model, through the setting of a first slider, bolts, and a second slider, allows the first and second sliders to slide within the support rail to adapt to roofs of different widths. Then, by tightening the bolts, the first and second sliders are brought into contact, thereby allowing the first and second clamping plates to clamp the roof's vertical bars, completing the installation. The weight of the luggage rack is directly borne by the support rail. The first slider, second slider, first clamping plate, and second clamping plate then support the support rail, and the roof's vertical bars further support the first and second clamping plates. The structure is simple, easy to operate, and highly stable.
[0026] 2. This utility model, through the arrangement of a first rack, gear, abutment, anti-slip pad, second rack, and support bar, allows the first rack to enter the second slider and mesh with the gear while the bolt is tightened to bring the first slider closer to the second slider, causing the gear to rotate. After the gear rotates, it meshes with the four second racks, driving the two abutments to extend from the second slider and contact the inner wall of the support rail through the anti-slip pad. The friction between the anti-slip pad and the inner wall of the support rail prevents the support rail from sliding freely on the first and second sliders after the bolt is tightened. At the same time, the support bar supports the abutments to increase their structural strength; this further limits the structure and improves stability.
[0027] 3. This utility model, through the setting of the torsion spring shaft, can always apply force to the gear, preventing the abutment plate from being affected by external forces such as vibration, impact, and inertia during transportation and installation, thus avoiding the phenomenon that the gear is locked due to the abutment plate extending out, preventing the first rack from extending into the second slider. This also prevents the first and second sliders from failing to close, thus preventing the first clamping plate from closing and clamping the roof vertical bar; thereby improving stability. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the structure of this utility model;
[0029] Figure 2 This is a schematic diagram of the first clamping plate structure of this utility model;
[0030] Figure 3 This is a schematic diagram of the first slider exploded structure of this utility model;
[0031] Figure 4 This is a top-section diagram of the second slider structure when the present invention is closed;
[0032] Figure 5 This is a top-section diagram of the second slider structure when the present invention is opened;
[0033] Figure 6 This is a schematic diagram of the exploded structure of the second slider of this utility model.
[0034] In the diagram: 1. Support rail; 2. Vertical rod; 3. Horizontal rod; 4. Vertical pole; 5. Diagonal brace; 6. First clamping plate; 7. Second clamping plate; 8. Clamping pad; 9. First slider; 10. Bolt; 11. First rack; 12. Second slider; 13. Torsion spring shaft; 14. Gear; 15. Support plate; 16. Anti-slip pad; 17. Second rack; 18. Support bar. Detailed Implementation
[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0036] The embodiments of this utility model will be described below based on its overall structure.
[0037] Example 1:
[0038] A mounting structure for a car roof rack, such as Figures 2-6 As shown, the system includes a support rail 1, inside which are respectively a first slider 9 and a second slider 12, both of which are slidably connected to the support rail 1. A bolt 10 passes through one side of the first slider 9, abutting against the first slider 9 and threadedly connected to the second slider 12. A first rack 11 is fixed to the other side of the first slider 9. A gear 14 is connected inside the second slider 12, and a torsion spring shaft 13 is connected to the top of the gear 14. Two abutment plates 15 are provided inside the second slider 12. Anti-slip pads 16 are connected to the outer surface of one abutment plate 15 and the back of the other abutment plate 15. The anti-slip pads 16 are made of silicone material and have a rough surface. Two second racks 17 and four support bars 18 are connected to the back of one abutment plate 15 and the outer surface of the other abutment plate 15. The gear 14 meshes with the first rack 11 and the second rack 17 respectively. Both the support bar 18 and the first clip 6 and the second clip 7 are slidably connected to the second slider 12. The operator slides the first clip 6 and the second clip 7, while the first slider 9 and the second slider 12 slide within the support rail 1 to accommodate different widths of the roof. Then, the locking bolt 10 is used to make the first slider 9 and the second slider 12 fit together. While tightening the bolt 10 to make the first slider 9 close to the second slider 12, the first rack 11 will enter the interior of the second slider 12 and mesh with the gear 14 to make the gear 14 rotate. After the gear 14 rotates, it meshes with the four second racks 17 to drive the two abutments 15 to extend out from the second slider 12 and contact the inner wall of the support rail 1 through the anti-slip pad 16. The friction between the anti-slip pad 16 and the inner wall of the support rail 1 prevents the support rail 1 from sliding freely on the first slider 9 and the second slider 12 after the bolt 10 is tightened. At the same time, the support bar 18 supports the abutments 15 to increase the structural strength of the abutments 15.
[0039] See Figures 1-6 In the above embodiment, a first clamping plate 6 is fixed to the bottom of the first slider 9, and a second clamping plate 7 is fixed to the bottom of the second slider 12. There are four first clamping plates 6 and four second clamping plates 7. The cross-sections of the four first clamping plates 6 and the four second clamping plates 7 are all "C" shaped. The four first clamping plates 6 and the four second clamping plates 7 are mirror images of each other. The first slider 9 and the second slider 12 are made to fit together by locking bolts 10, so that the first clamping plate 6 and the second clamping plate 7 fit together to clamp the vertical bar of the roof and complete the installation.
[0040] like Figure 1 As shown, a vertical rod 2 is connected to the outer surface of the support rail 1, a horizontal rod 3 is connected to one side of the vertical rod 2, a vertical pole 4 is connected to the top of the vertical rod 2, and a diagonal brace 5 is connected to the back of the support rail 1. Multiple vertical rods 2, horizontal rods 3, vertical poles 4 and diagonal braces 5 are provided. The luggage rack is formed by multiple vertical rods 2, horizontal rods 3, vertical poles 4 and diagonal braces 5, so that users can put their items into the luggage rack for transportation. During the process, the items need to be tied with straps to prevent the items from falling off and causing safety hazards.
[0041] Example 2:
[0042] Based on the above embodiment one, the following settings are now implemented to increase stability.
[0043] See Figures 1-6 In the above embodiments, a clamping pad 8 is provided inside the first clamping plate 6 and the second clamping plate 7. The clamping pad 8 is made of silicone material. The silicone clamping pad 8 increases the friction between the first clamping plate 6 and the second clamping plate 7 and the roof bar, thus preventing the structure from loosening.
[0044] The implementation principle of this utility model is as follows: First, the user places the support rail 1 above the roof vertical bar. Then, the operator slides the first clamping plate 6 and the second clamping plate 7, while the first slider 9 and the second slider 12 slide within the support rail 1 to adapt to roofs of different widths. Then, the locking bolt 10 is used to make the first slider 9 and the second slider 12 fit together, so that the first clamping plate 6 and the second clamping plate 7 fit together to clamp the roof vertical bar and complete the installation. At the same time, the silicone clamping pad 8 increases the friction between the first clamping plate 6 and the second clamping plate 7 and the roof vertical bar to prevent the structure from loosening.
[0045] While tightening the bolt 10 to bring the first slider 9 close to the second slider 12, the first rack 11 will enter the interior of the second slider 12 and mesh with the gear 14 to rotate the gear 14. After the gear 14 rotates, it meshes with the four second racks 17 to drive the two abutments 15 to extend out of the second slider 12 and contact the inner wall of the support rail 1 through the anti-slip pad 16. The friction between the anti-slip pad 16 and the inner wall of the support rail 1 prevents the support rail 1 from sliding freely on the first slider 9 and the second slider 12 after the bolt 10 is tightened. At the same time, the support bar 18 supports the abutment 15 to increase the structural strength of the abutment 15.
[0046] After installation, the luggage rack is composed of multiple vertical bars 2, horizontal bars 3, upright bars 4 and diagonal braces 5, so that users can put their items into the luggage rack for transportation. During this process, the items need to be secured with straps to prevent them from falling off and causing safety hazards.
[0047] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A mounting structure for a car roof rack, comprising a support rail (1), characterized in that: The support rail (1) is provided with a first slider (9) and a second slider (12) respectively; and a bolt (10) passes through one side of the first slider (9), and a first rack (11) is fixed on the other side of the first slider (9); a gear (14) is connected inside the second slider (12), and a torsion spring shaft (13) is connected to the top of the gear (14); two abutments (15) are provided inside the second slider (12); an anti-slip pad (16) is connected to the outer surface of one abutment (15) and the back of the other abutment (15); and two second racks (17) and four support bars (18) are connected to the back of one abutment (15) and the outer surface of the other abutment (15).
2. The mounting structure of the car roof rack according to claim 1, characterized in that: The first slider (9) and the second slider (12) are both slidably connected to the support rail (1), and the bolt (10) abuts against the first slider (9), and the bolt (10) is threadedly connected to the second slider (12).
3. The mounting structure of the car roof rack according to claim 2, characterized in that: The gear (14) meshes with the first rack (11) and the second rack (17) respectively, and the abutment (15) and the support bar (18) are slidably connected to the second slider (12).
4. The mounting structure of the car roof rack according to claim 1, characterized in that: The anti-slip mat (16) is made of silicone material and has a rough surface.
5. The mounting structure of the car roof rack according to claim 1, characterized in that: The bottom of the first slider (9) is fixed with a first clamping plate (6), and the bottom of the second slider (12) is fixed with a second clamping plate (7).
6. The mounting structure of the car roof rack according to claim 5, characterized in that: There are four of each of the first clamping plate (6) and the second clamping plate (7), and the cross-sections of the four first clamping plates (6) and the two clamping plates (7) are all "C" shaped. The four first clamping plates (6) and the two clamping plates (7) are all mirror images of each other.
7. The mounting structure of the car roof rack according to claim 6, characterized in that: The first clamping plate (6) and the second clamping plate (7) are both provided with clamping pads (8), and the clamping pads (8) are made of silicone material.
8. The mounting structure of the car roof rack according to claim 1, characterized in that: The support rail (1) has a vertical rod (2) connected to its outer surface, and a horizontal rod (3) is connected to one side of the vertical rod (2). A vertical pole (4) is connected to the top of the vertical rod (2), and a diagonal brace (5) is connected to the back of the support rail (1).
9. The mounting structure of the car roof rack according to claim 8, characterized in that: Multiple vertical bars (2), horizontal bars (3), uprights (4), and diagonal braces (5) are provided.
Citation Information
Patent Citations
Automobile luggage rack mounting seat
CN222022617U