Luggage rack cross rod connecting structure

Abstract

The utility model relates to a luggage rack cross rod connecting structure, and relates to the technical field of cross rod connection, the luggage rack cross rod connecting structure comprises a cross rod and a base, the cross rod is hollow, an insertion plate connected with the base is located in the cross rod, the cross rod is provided with a receding hole, the insertion plate is provided with a receding groove, a mounting gasket is arranged in the cross rod, and the mounting gasket is provided with a mounting hole. The bottom of the inner wall of the transverse rod is provided with inner reinforcing ribs to form a sliding way for the installation gasket to slide, the inner wall of the transverse rod is provided with outer reinforcing ribs to form a sliding way for the insertion plate to slide, the top of the inner wall is provided with a sinking groove body, and a sealing strip is arranged in the sinking groove body in an interference mode. The base comprises a stand column and a support, the support is connected with a supporting plate, and the base is connected with a frame hook through a hook bolt and a rear hook nut. The luggage rack cross rod connecting structure has the technical effects that the luggage rack cross rod connecting structure is convenient to install and stable in structure.

Description

Technical Field

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

[0002] In the field of roof rack installation technology, the roof rack crossbars, as rod-like structures installed on the roof of a car to support luggage or luggage compartments, require a reasonable and reliable installation method. With the continuous development of the automotive industry, people's demands for the functionality and practicality of cars are increasing, making roof racks an important feature for many car owners to expand storage space. A reasonable roof rack crossbar installation structure not only improves the overall practicality of the car but also enhances its aesthetics to a certain extent, meeting diverse consumer needs.

[0003] The installation method of the luggage rack crossbar in related technologies is as follows: a base is set at the end of the crossbar, and the crossbar is connected to the roof of the car through the base. The bottom of the base is connected to the roof of the car by a hook, and the top of the base is equipped with an insert plate. The crossbar is hollow inside, and the insert plate is inserted into the crossbar to achieve initial installation. In addition, the insert plate usually has two mounting holes, and correspondingly, the crossbar has two clearance holes. In actual installation, screws are passed through the clearance holes and then threaded into the mounting holes to secure the crossbar.

[0004] The aforementioned technologies have the following drawbacks: the two mounting holes are usually machined before leaving the factory, but problems such as inaccurate positioning and defects in the threaded holes are inevitable during the machining process. Therefore, this method of directly setting the mounting holes on the insert plate makes it difficult to adjust on-site if machining accuracy issues arise, which can easily lead to the scrapping of the insert plate and the base. Once scrapped, the cost loss is high, so it needs to be improved. Utility Model Content

[0005] To improve installation flexibility, this application provides a luggage rack crossbar connection structure.

[0006] A luggage rack crossbar connection structure includes a crossbar and a base. The crossbar is hollow, and the base is connected to an insert plate located inside the crossbar. The crossbar has a clearance hole, and the insert plate has a clearance groove located below the clearance hole. A mounting washer is provided inside the crossbar, and the mounting washer has a mounting hole located below the corresponding clearance hole. A mounting bolt is connected to the crossbar, and the threaded part of the mounting bolt passes through the clearance hole and the clearance groove and is threadedly connected to the mounting hole. The nut part of the mounting bolt abuts against the top of the crossbar.

[0007] By adopting the above technical solution, bolt fixing can still be achieved by pre-setting mounting holes with mounting shims. Furthermore, clearance can be pre-reserved between the clearance holes and the bolt thread, reducing the requirements for machining precision. This means that neither the crossbar nor the base is prone to failure. The mounting shims themselves are small and low-cost. Even if machining precision or defects are discovered on-site, preventing installation, they can be directly replaced, keeping costs low. In addition, in related technologies, the positions of the two mounting holes and two clearance holes are pre-fixed. If the concentricity of the holes is difficult to guarantee due to machining deviations, it will lead to installation difficulties, making it inconvenient. However, this application uses mounting shims for installation, allowing for flexible adjustment of the shim position during installation. Each independent mounting shim matches the corresponding clearance hole, eliminating interference between the two mounting holes and thus providing greater installation flexibility.

[0008] Preferably, the bottom of the inner wall of the crossbar is provided with a pair of inner reinforcing ribs, and a slide is formed between the two inner reinforcing ribs to allow the mounting pad to slide in the width direction.

[0009] By adopting the above technical solution, a pair of inner reinforcing ribs at the bottom of the inner wall of the crossbar are used to form a slide for the installation shim to slide in the width direction. This allows the position of the installation shim to be flexibly adjusted during installation to match the corresponding clearance hole, and also assists in positioning, thus improving the convenience of installation.

[0010] Preferably, the inner wall of the crossbar is provided with an outer reinforcing rib, and a slide is formed between the two outer reinforcing ribs to allow the insert plate to slide in the width direction.

[0011] By adopting the above technical solution, an outer reinforcing rib is set on the inner wall of the crossbar to form a slide for the insert plate to slide in the width direction. On the one hand, the outer reinforcing rib can strengthen the structural strength of the crossbar, and on the other hand, the insert plate can slide in the slide and assist in positioning, thus improving the convenience of installation.

[0012] Preferably, the top of the inner wall of the crossbar is provided with a recessed groove, the top of the insert plate is fitted to the bottom of the recessed groove, the clearance hole is located at the bottom of the recessed groove, and the nut of the mounting bolt is located inside the recessed groove.

[0013] By adopting the above technical solution, a recessed groove is set at the top of the inner wall of the crossbar, the top of the insert plate fits with the bottom of the recessed groove, the clearance hole is at the bottom of the recessed groove, and the nut of the mounting bolt is located inside the recessed groove. This makes the installation of the mounting bolt more concealed, does not protrude from the crossbar, and reduces the occupation of the external space of the crossbar.

[0014] Preferably, the sinking tank is internally fitted with a sealing strip.

[0015] By adopting the above technical solution, the nut part of the mounting bolt is placed inside the recessed groove at the top of the inner wall of the crossbar, and a sealing strip is interference-fitted inside the recessed groove. This can prevent the nut part of the mounting bolt from being exposed and also allow the sealing strip to play a sealing role.

[0016] Preferably, the insert plate includes a horizontal plate and vertical plates on both sides of the horizontal plate, the vertical plates are fitted with the corresponding external reinforcing ribs, and the horizontal plate is fitted with the bottom of the sinking trough.

[0017] By adopting the above technical solution, the insert plate adopts a structure of a horizontal plate and two vertical plates on both sides. The vertical plates are attached to the outer reinforcing ribs, and the horizontal plates are attached to the bottom of the sinking groove, which makes the installation of the insert plate in the crossbar more stable and more stable during the sliding installation process. It can assist in positioning and further improve the installation convenience of the luggage rack crossbar connection structure.

[0018] Preferably, the base includes a column and a support, the insert plate is connected to the column, and the support is connected to the bottom of the column.

[0019] By adopting the above technical solution, the base is divided into a column and a support. The insert plate is connected to the column and the support is connected to the bottom of the column. The structural composition of the base is clearly defined, which is conducive to the rational layout of the luggage rack crossbar connection structure and facilitates the connection and installation of the base, crossbar and other components.

[0020] Preferably, the support is connected to a support plate, the support plate is provided with a pre-drilled hole, the base is connected to a frame hook, the frame hook is provided with a reserved hole, a hook bolt passes through the reserved hole, the nut of the hook bolt is located on the side of the frame hook away from the support plate, the support plate is provided with a hook nut on the side away from the frame hook, and the screw of the hook bolt passes through the pre-drilled hole and is threadedly connected to the hook nut.

[0021] By adopting the above technical solution, the support plate is connected to the support base, the support plate has pre-drilled holes, the frame hook connected to the base has reserved holes, and the hook bolt passes through the reserved holes, the pre-drilled holes and the hook nut are threaded together, so as to achieve a stable connection between the base and the frame.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Bolt fixing is achieved by pre-setting mounting holes through mounting shims. The clearance holes and clearance grooves leave gaps with the bolt thread, which has low requirements for machining accuracy. The crossbar and base are not easy to be scrapped. The mounting shims are small in size and low in cost. They can be directly replaced if problems occur.

[0024] 2. Installation is carried out using mounting shims, which can be flexibly adjusted. Each mounting shim is matched with a corresponding clearance hole, eliminating the problem of interference between two mounting holes and providing greater installation flexibility.

[0025] 3. The inner reinforcing ribs at the bottom of the inner wall of the crossbar form a slide for the installation shims, and the outer reinforcing ribs on the inner wall of the crossbar form a slide for the insertion plate, which facilitates the installation of the shims and insertion plates. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0027] Figure 2 This is a structural schematic diagram illustrating the connection relationship between the end of the crossbar and the base in an embodiment of this application;

[0028] Figure 3 This is a cross-sectional schematic diagram used in the embodiments of this application to illustrate the connection relationship between the crossbar and the insert plate;

[0029] Figure 4 This is a disassembly diagram illustrating the connection between the crossbar and the insert plate in an embodiment of this application;

[0030] Figure 5 This is a structural schematic diagram illustrating the connection relationship between the insert plate and the mounting bolts in an embodiment of this application;

[0031] Figure 6 This is a structural schematic diagram illustrating the connection between the hook nut and the support plate in the reverse-threaded state in an embodiment of this application;

[0032] Figure 7 This is a disassembly diagram illustrating the connection between the hook nut and the support plate in the reversed state, as shown in the embodiments of this application.

[0033] Figure 8 This is a schematic diagram illustrating the connection between the hook nut and the support plate in the forward installation state, as shown in the embodiments of this application.

[0034] In the picture:

[0035] 1. Crossbar; 11. Inner reinforcing rib; 12. Outer reinforcing rib; 13. Sinking groove; 130. Clearance hole; 14. Mounting bolt; 15. Sealing strip;

[0036] 2. Base; 21. Column; 22. Support; 23. Support plate; 230. Pre-drilled hole;

[0037] 3. Insert plate; 31. Horizontal plate; 310. Leaving groove; 32. Vertical plate;

[0038] 4. Frame hook; 40. Pre-drilled hole; 41. Hook bolt; 42. Hook nut;

[0039] 5. Install gaskets; 51. Mounting holes. Detailed Implementation

[0040] Reference Figure 1 and Figure 2 The luggage rack crossbar connection structure provided in this embodiment includes a crossbar 1 and bases 2 at both ends of the crossbar 1. The crossbar 1 is hollow, and a plate 3 is connected to the side of the base 2 near the crossbar 1. The plate 3 is located inside the crossbar 1 and is initially installed by plugging it in. Furthermore, the base 2 includes a column 21 and a support 22, which can be fixed together by welding or bolting. The plate 3 is connected to the top of the column 21, and the support 22 is connected to the bottom of the column 21. In the actual installation state, the support 22 is used to fit against the roof of the car to reduce pressure, and the column 21 serves to support the plate 3 and transmit force. The base 2 is also connected to a frame hook 4. The shape of the frame hook 4 is customized according to the outline of the roof frame structure of different car models and is not limited to the shape in this embodiment. The frame hook 4 is used to hook onto the roof frame to fix the base 2 to the roof of the car.

[0041] Reference Figure 3 and Figure 4 The crossbar 1 is a hollow rod-shaped structure, which can be made of aluminum alloy, which is lightweight and high-strength. It can also be made of stainless steel, which has good corrosion resistance. A pair of inner reinforcing ribs 11 are provided at the bottom of the inner wall of the crossbar 1. The inner reinforcing ribs 11 can be integrally formed during the manufacturing process of the crossbar 1. Two mounting shims 5 are provided inside the crossbar 1. The mounting shims 5 are square and have mounting holes 51, which are threaded holes. A slide rail is formed between the two inner reinforcing ribs 11 to allow the mounting shims 5 to slide in the width direction. The inner reinforcing ribs 11 not only enhance the strength of the crossbar 1 but also provide guidance and positioning for the installation of the mounting shims 5. The mounting shims 5 can slide within the slide rail, facilitating adjustment of their position to ensure that the mounting holes 51 are aligned with the clearance holes 130.

[0042] The inner wall of the crossbar 1 is also integrally formed with a pair of outer reinforcing ribs 12. A slide is formed between the two outer reinforcing ribs 12 to allow the insert plate 3 to slide in the width direction. The insert plate 3 can be inserted into the crossbar 1 along the slide. The outer reinforcing ribs 12 play a guiding and positioning role for the insert plate 3, and also enhance the overall structural strength of the crossbar 1.

[0043] In addition, a recessed groove 13 is integrally formed on the top of the inner wall of the crossbar 1. The recessed groove 13 is a groove-shaped structure formed by a downward indentation at the top of the inner wall of the crossbar 1. The top of the insert plate 3 is fitted to the bottom of the recessed groove 13. The recessed groove 13 enhances the structural strength of the crossbar 1 and, together with the two outer reinforcing ribs 12, limits the insertion angle of the insert plate 3, provides guidance for the installation position, and offers convenience.

[0044] The bottom of the recessed trough 13 is provided with clearance holes 130. In this embodiment, there are two clearance holes 130, through which mounting bolts 14 pass. The nut of the mounting bolt 14 is located inside the recessed trough 13. This arrangement ensures that the nut of the mounting bolt 14 does not protrude from the top of the crossbar 1, thus guaranteeing the flatness of the top of the crossbar 1. In addition, a sealing strip 15 is interference-fitted inside the recessed trough 13. The sealing strip 15 is elastic and can fill the gap between the recessed trough 13 and the nut of the mounting bolt 14, playing a role in sealing and shock absorption, reducing the entry of rainwater, dust, etc. into the crossbar 1, and reducing the impact of vibration generated during vehicle operation on the mounting bolt 14.

[0045] Reference Figure 5 The insert plate 3 includes a horizontal plate 31 and vertical plates 32 on both sides of the horizontal plate 31. In this embodiment, the vertical plates 32 and the horizontal plate 31 are integrally formed. The vertical plates 32 are attached to the corresponding outer reinforcing ribs 12, and the horizontal plate 31 is attached to the bottom of the sinkhole 13. This structure makes the connection between the insert plate 3 and the crossbar 1 tighter and more stable, improving the reliability of the entire connection structure. In other embodiments, the horizontal plate 31 and the vertical plate 32 of the insert plate 3 can also be fixedly connected to the base 2 by welding, or they can be manufactured in an integral form as in this embodiment. The insert plate 3 is located inside the crossbar 1, and a clearance groove 310 is provided in the middle of the horizontal plate 31 of the insert plate 3. The clearance groove 310 is a long strip groove opened on the insert plate 3, located below the clearance hole 130, and a gap can be reserved between the clearance groove 310 and the screw part of the mounting bolt 14, so the processing precision requirements are not high.

[0046] The mounting shims 5 inside the crossbar 1 are typically rectangular plates, made of carbon steel or stainless steel, requiring less material and resulting in lower cost. The mounting shims 5 have mounting holes 51, which are pre-machined threaded holes. During installation, the position of the mounting shims 5 can be flexibly adjusted to match the corresponding clearance holes 130. Once the mounting shims 5 are in place, the mounting holes 51 are located below the corresponding clearance holes 130, thus avoiding any interference issues.

[0047] The threaded portion of the mounting bolt 14 passes through the clearance hole 130 of the crossbar 1 and the clearance groove 310 of the insert plate 3, and is threadedly connected to the mounting hole 51 of the mounting washer 5. The nut portion of the mounting bolt 14 abuts against the top of the crossbar 1, and the mounting washer 5 abuts against the bottom of the insert plate 3, thereby achieving a fixed connection between the crossbar 1 and the base 2 through the insert plate 3. This achieves the effect of improving installation flexibility and reducing costs because the mounting washer 5 can be flexibly adjusted in position and is low in cost; even if it is scrapped or replaced, it will not increase the installation cost much. The mounting bolt 14 can be a hexagonal head bolt, which is convenient for tightening with tools.

[0048] Reference Figure 3 , Figure 6 and Figure 7 A support plate 23 is fixed to the edge of the support 22. The support plate 23 can be fixed to the support 22 by welding, bolting, or integral molding. The support plate 23 is provided with a pre-drilled hole 230, which is a through hole penetrating the support plate 23. The base 2 is connected to a frame hook 4. In other embodiments, the frame hook 4 can be fixed to the base 2 by bolting or welding. In this embodiment, the frame hook 4 is provided with a reserved hole 40, and a hook bolt 41 passes through the reserved hole 40. The nut part of the hook bolt 41 is located on the side of the frame hook 4 away from the support plate 23. A hook nut 42 is provided on the side of the support plate 23 away from the frame hook 4. The threaded part of the hook bolt 41 passes through the pre-drilled hole 230 and is threadedly connected to the hook nut 42. Through this connection method, a reliable connection between the base 2 and the roof of the car is achieved.

[0049] There are two ways to install the hook nut 42: one is to install the hook nut 42 in the forward direction (see [reference]). Figure 8 The hook nut 42 is connected by its larger diameter end against the support plate 23, thus achieving a threaded connection with the hook bolt 41. Alternatively, the hook nut 42 is configured in the opposite direction (see [reference]). Figure 6 The pre-drilled hole 230 is designed to match the prism segment of the hook nut 42, typically a regular hexagon. In this configuration, the prism segment of the hook nut 42 can be partially inserted into the pre-drilled hole 230, with the larger diameter end of the hook nut 42 used for positioning, thus achieving the threaded connection of the hook bolt 41. The advantage of this installation method is that the hook nut 42 can be positioned using the pre-drilled hole 230, improving installation convenience.

[0050] The implementation principle of this embodiment is as follows: This embodiment uses mounting shims 5 with pre-set mounting holes 51 to fix the bolts. A clearance is reserved between the clearance holes 130 and 310 and the threaded portion of the mounting bolt 14, thus the processing precision requirements are not high, and the crossbar 1 and base 2 are less likely to be scrapped. The mounting shims 5 are small in size and low in material cost. If processing precision or defects prevent installation, they can be directly replaced, reducing costs. Simultaneously, the position of each mounting shim 5 can be independently adjusted during installation, avoiding installation difficulties caused by the spacing accuracy issues between multiple mounting holes 51 and improving installation flexibility. Furthermore, the inner reinforcing ribs 11 and outer reinforcing ribs 12 enhance the strength of the crossbar 1, the design of the recessed groove 13 and sealing strip 15 improves the sealing and stability of the connection structure, and the special structure of the insert plate 3 and the connection method between the base 2 and the car roof further ensure the reliability and practicality of the entire luggage rack crossbar 1 connection structure, representing a significant improvement and enhancement compared to existing technologies.

[0051] 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 luggage rack crossbar connection structure, characterized in that: The device includes a crossbar (1) and a base (2). The crossbar (1) is hollow. The base (2) is connected to a plate (3). The plate (3) is located inside the crossbar (1). The crossbar (1) has a clearance hole (130). The plate (3) is provided with a clearance groove (310). The clearance groove (310) is located below the clearance hole (130). The crossbar (1) is provided with a mounting washer (5). The mounting washer (5) is provided with a mounting hole (51). The mounting hole (51) is located below the corresponding clearance hole (130). The crossbar (1) is connected to a mounting bolt (14). The threaded part of the mounting bolt (14) passes through the clearance hole (130) and the clearance groove (310) and is threadedly connected to the mounting hole (51). The nut part of the mounting bolt (14) abuts against the top of the crossbar (1).

2. The luggage rack crossbar connection structure according to claim 1, characterized in that: The bottom of the inner wall of the crossbar (1) is provided with a pair of inner reinforcing ribs (11), and a slide is formed between the two inner reinforcing ribs (11) for the installation pad (5) to slide in the width direction.

3. The luggage rack crossbar connection structure according to claim 1, characterized in that: The inner wall of the crossbar (1) is provided with an outer reinforcing rib (12), and a slide is formed between the two outer reinforcing ribs (12) to allow the insert plate (3) to slide in the width direction.

4. The luggage rack crossbar connection structure according to claim 3, characterized in that: The top of the inner wall of the crossbar (1) is provided with a sinking trough (13), the top of the insert plate (3) is fitted to the bottom of the sinking trough (13), the clearance hole (130) is provided at the bottom of the sinking trough (13), and the nut of the mounting bolt (14) is located inside the sinking trough (13).

5. The luggage rack crossbar connection structure according to claim 4, characterized in that: The sinking tank (13) is internally fitted with a sealing strip (15).

6. The luggage rack crossbar connection structure according to claim 4, characterized in that: The insert plate (3) includes a horizontal plate (31) and vertical plates (32) on both sides of the horizontal plate (31). The vertical plates (32) are attached to the corresponding external reinforcing ribs (12), and the horizontal plate (31) is attached to the bottom of the sinking trough (13).

7. The luggage rack crossbar connection structure according to claim 1, characterized in that: The base (2) includes a column (21) and a support (22), the insert plate (3) is connected to the column (21), and the support (22) is connected to the bottom of the column (21).

8. The luggage rack crossbar connection structure according to claim 7, characterized in that: The support (22) is connected to a support plate (23), the support plate (23) is provided with a pre-drilled hole (230), the base (2) is connected to a frame hook (4), the frame hook (4) is provided with a reserved hole (40), a hook bolt (41) is inserted in the reserved hole (40), the nut of the hook bolt (41) is located on the side of the frame hook (4) away from the support plate (23), the support plate (23) is provided with a hook nut (42) on the side away from the frame hook (4), and the screw of the hook bolt (41) is threadedly connected to the hook nut (42) after passing through the pre-drilled hole (230).

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