A roof rack cross bar mounting structure based on a roof fin

Abstract

The utility model discloses a luggage rack cross bar mounting structure based on top ornament strip, include: top ornament strip, openable ornament cover, hidden support and luggage rack cross bar, be provided with mounting hole on top ornament strip, openable ornament cover detachably cover on mounting hole, hidden support fixed setting on the car body side wall structure and be located top ornament strip below, be provided with corresponding screw thread connection portion with mounting hole on hidden support, the base of luggage rack cross bar is provided with the connecting bolt cooperation with screw thread connection portion, when needing to install luggage rack cross bar, open openable ornament cover, make the connecting bolt of luggage rack cross bar pass through mounting hole and the fixed connection of hidden support screw thread connection portion, thereby will luggage rack cross bar fixed on the roof of the car, the utility model discloses can improve the aesthetic property of vehicle, the security and flexibility of luggage rack cross bar long -term use.

Description

Technical Field

[0001] This utility model belongs to the field of automobile manufacturing technology, and specifically relates to a luggage rack crossbar mounting structure based on the top trim strip. Background Technology

[0002] As an important component of the vehicle roof for expanding storage function, the installation method of the roof rack crossbar directly affects the vehicle's aesthetics, structural strength, and ease of use. Currently, the common installation methods of roof rack crossbars on the market mainly have the following problems: (1) Destructive installation: Some installation methods require drilling holes in the roof sheet metal for fixing, which not only damages the integrity of the vehicle body structure and the anti-corrosion layer, but also poses the risk of water leakage and rust, affecting the service life of the vehicle. (2) Exposed installation affects aesthetics: Some installation schemes expose the brackets and bolts directly on the roof surface, which not only affects the uniformity and aesthetics of the overall vehicle appearance, but also exposes the exposed parts to rain, dust and other environments for a long time, which is prone to aging and corrosion, reducing the service life. (3) The decorative cover cannot be opened, resulting in poor flexibility: Some models use fixed decorative covers to cover the installation points. Although this improves the appearance to a certain extent, the decorative cover cannot be opened, making it inconvenient for users to operate when they need to install or remove the crossbar. It cannot adapt to temporary loading needs and lacks flexibility of use. (4) Lack of dedicated load-bearing structure: Some existing installation methods rely solely on the top trim strip itself to support the crossbar and load. After long-term use, the top trim strip is prone to deformation and loosening of the connection, posing a safety hazard and failing to meet the needs of high-intensity and high-frequency use.

[0003] Therefore, designing a luggage rack crossbar installation structure that combines aesthetics, flexibility, and high strength is a technical problem that urgently needs to be solved. Utility Model Content

[0004] To solve the above problems, this utility model provides a luggage rack crossbar mounting structure based on a top trim strip. The technical problem to be solved by this utility model is achieved through the following technical solution: This utility model provides a luggage rack crossbar mounting structure based on a top trim strip, including: a top trim strip 1, an openable cover 2, a concealed bracket 3, and a luggage rack crossbar 4; The top trim strip 1 is provided with mounting holes 11; The removable cover 2 is detachably attached to the mounting hole 11; The concealed bracket 3 is fixedly mounted on the side structure of the vehicle body and located below the top trim strip 1. The concealed bracket 3 is provided with a threaded connection part 31 corresponding to the mounting hole 11. The base 41 of the luggage rack crossbar 4 is provided with a connecting bolt 42 that mates with the threaded connecting portion 31. When installing the luggage rack crossbar 4, the openable trim cover 2 is opened, and the connecting bolt 42 of the luggage rack crossbar 4 passes through the mounting hole 11 and is fixedly connected to the threaded connecting portion 31 of the hidden bracket 3, thereby fixing the luggage rack crossbar 4 to the roof of the vehicle.

[0005] In an embodiment of the present utility model, the openable trim cover 2 is snap-fitted at the mounting hole 11 of the top trim strip 1 by an interference fit.

[0006] In an embodiment of the present utility model, the side surface of the openable trim cover 2 is provided with a plurality of snap protrusions 21, and the snap protrusions 21 are in interference fit with the edge of the mounting hole 11.

[0007] In an embodiment of the present utility model, the hidden bracket 3 is fixed to the side wall reinforcement sheet metal of the vehicle body by welding.

[0008] In an embodiment of the present utility model, the hidden bracket 3 has a "U" - shaped structure.

[0009] In an embodiment of the present utility model, the threaded connecting portion 31 of the hidden bracket 3 is a welded nut.

[0010] In an embodiment of the present utility model, a sealing gasket 5 is provided between the base 41 of the luggage rack crossbar 4 and the upper surface of the top trim strip 1.

[0011] In an embodiment of the present utility model, a manual knob 43 is provided on the connecting bolt 42.

[0012] In an embodiment of the present utility model, the hidden bracket 3 is made of high-strength aluminum steel material and its surface is subjected to anti-corrosion treatment.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: (1). The present utility model provides a mounting structure for a luggage rack crossbar based on a top trim strip. Through the component of the "openable trim cover", it can be "detachably covered on the mounting hole of the top trim strip" in the non - use state. This means that when the luggage rack crossbar is not required to be installed, the trim cover can completely shield the mounting hole and the internal hidden bracket, making the appearance of the vehicle roof maintain a flat and smooth surface consistent with the top trim strip, without any protruding exposed components. Compared with the "directly externally exposed installation" or "fixed non - openable trim cover" solutions in the background art, it actively and reversibly realizes the hiding and showing of the installation points, thus significantly improving the aesthetics and integrity of the vehicle.

[0014] (2) This utility model introduces a "concealed bracket" and specifies that it is "fixed on the side structure of the vehicle body". This design establishes a direct and high-strength force transmission path from the roof rack crossbar to the vehicle body frame. When the roof rack crossbar is under force, the load is transmitted to the concealed bracket through bolts, and then distributed by the concealed bracket to the robust side structure of the vehicle body (such as reinforced sheet metal). The roof trim mainly plays a decorative and sealing role in this process and basically does not bear the main load. Therefore, this solution fundamentally avoids the risks of deformation and loosening caused by insufficient strength of the roof trim material, ensuring the safety and reliability of the roof rack crossbar in long-term use.

[0015] (3) This utility model combines an "openable cover" with a "threaded connection on a concealed bracket" to form a "quickly accessible and robust connection point". Users can simply open the cover to expose the mounting holes and threaded connection for installing or removing the luggage rack crossbar. After completion, closing the cover restores the aesthetic appearance. This design gives users the ability to install or remove the luggage rack crossbar at any time according to their needs, perfectly solving the problem of poor flexibility of the "fixed cover" solution and meeting the diverse needs of different vehicle usage scenarios.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a luggage rack crossbar mounting structure based on a top trim strip, provided in an embodiment of this utility model. Figure 2 This is an assembly diagram of an openable decorative cover and mounting holes provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of an openable decorative cover provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of a concealed bracket provided in an embodiment of the present invention; Figure 5 This is provided by the embodiment of the present utility model. Figure 1 A schematic diagram of the decomposition process; Explanation of reference numerals in the attached figures: 1-Top trim strip, 11-Mounting holes; 2-Openable decorative cover, 21-Snap-on protrusion; 3-Concealed bracket, 31-Threaded connection, 32-Bracket hole; 4-Luggage rack crossbar, 41-Base, 411-Base cover, 42-Connecting bolt, 43-Manual knob; 5-Sealing gasket. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a detailed explanation of a luggage rack crossbar installation structure based on a top trim strip proposed according to this utility model.

[0019] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the specific embodiments with reference to the accompanying drawings. Through the description of the specific embodiments, a more in-depth and specific understanding can be gained of the technical means and effects adopted by this utility model to achieve the intended purpose. However, the accompanying drawings are only provided for reference and illustration and are not intended to limit the technical solution of this utility model.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes said element.

[0021] This utility model addresses the issue that existing roof rack crossbar installation methods directly affect a vehicle's aesthetics, structural strength, and ease of use. It proposes a roof rack crossbar installation structure based on the roof trim strip. Please refer to [link / reference]. Figure 1 The structure includes a top trim strip 1, an openable cover 2, a concealed bracket 3, and a luggage rack crossbar 4.

[0022] The top trim strip 1 has mounting holes 11.

[0023] An openable cover 2 is detachably attached to the mounting hole 11. Specifically, as shown... Figure 2 As shown, the openable cover 2 is snapped into the mounting hole 11 of the top trim strip 1 by an interference fit.

[0024] Furthermore, such as Figure 3As shown in the figure, in the embodiment of the present utility model, a plurality of snap protrusions 21 are provided on the side of the openable decorative cover 2, and the snap protrusions 21 are in interference fit with the edge of the mounting hole 11. It should be noted that when the user needs to install or拆卸 the luggage rack crossbar 4, it can be achieved by opening or closing the openable decorative cover 2. And after拆卸 the luggage rack crossbar 4, closing the openable decorative cover 2 can completely hide the hidden bracket 3, thus restoring the flatness, unity and beauty of the roof appearance, and solving the problem that the exposed parts in the traditional installation method affect the beauty.

[0025] In the embodiment of the present utility model, the hidden bracket 3 is fixedly arranged on the body side structure and is located below the top trim strip 1. A threaded connection part 31 corresponding to the mounting hole 11 is provided on the hidden bracket 3.

[0026] Specifically, the hidden bracket 3 is fixed to the side wall reinforcement sheet metal of the vehicle body by welding (for example, in the side wall gutter of the vehicle body).

[0027] Furthermore, reference can be made to Figure 4 , Figure 4 which is a schematic structural view of a hidden bracket provided by an embodiment of the present utility model. As shown in Figure 3 , the hidden bracket 3 is in a "U" - shaped structure. Among them, the threaded connection part 31 on the hidden bracket 3 is a welded nut. Specifically, the hidden bracket 3 can be spot - welded to the side wall reinforcement sheet metal of the vehicle body. A bracket hole 32 is provided on the horizontal section of the hidden bracket 3, and the position of the bracket hole 32 corresponds to the mounting hole 11. A nut is welded below the bracket hole 32 to fix the luggage rack crossbar 4 to the roof through this nut.

[0028] It should be noted that the hidden bracket 3 of the present utility model is made of high - strength aluminum - steel material and its surface is treated with anti - corrosion. This ensures that the hidden bracket 3 will not undergo plastic deformation or fracture under the rated load, avoiding serious safety hazards such as loosening or falling off of the luggage rack crossbar 4 caused by the failure of the hidden bracket 3. In addition, its surface anti - corrosion treatment can prevent the bracket itself from rusting, ensuring the durability of its structural strength and extending the service life. At the same time, it also protects the threaded connection part 31 (such as the welded nut) on the hidden bracket 3, ensuring that the connecting bolt 42 can be screwed in and out smoothly for a long time.

[0029] It should be noted that the word "拆卸" in Chinese has no exact English equivalent in this context. A more appropriate expression might be "dismantle / remove", but since the original text is in a technical description context, it's better to keep it as "拆卸" for the purpose of maintaining the integrity of the original text for translation. If this is a formal patent translation, it may be necessary to further research and standardize this part according to relevant patent translation norms.In this embodiment of the utility model, the base 41 of the luggage rack crossbar 4 is provided with a connecting bolt 42 that cooperates with the threaded connection part 31. When the luggage rack crossbar 4 needs to be installed, the openable cover 2 is opened (which can be understood as removing the openable cover 2), so that the connecting bolt 42 of the luggage rack crossbar 4 passes through the mounting hole 11 and is fixedly connected to the threaded connection part 31 of the concealed bracket 3, thereby fixing the luggage rack crossbar 4 to the roof. When the luggage rack crossbar 4 needs to be removed, the connecting bolt 42 is rotated in the opposite direction to completely disengage it from the connecting bolt 42 of the concealed bracket 3, so that the luggage rack crossbar 4 can be pulled out from the mounting hole 11, thereby removing the luggage rack crossbar 4 from the roof. Then the openable cover 2 is closed to restore the flat appearance of the roof.

[0030] Further details can be found in [link to relevant document]. Figure 5 , Figure 5 This is provided by the embodiment of the present utility model. Figure 1 A breakdown diagram, such as Figure 4 As shown, a manual knob 43 is provided on the connecting bolt 42. This manual knob 43 allows users to tighten or loosen the connecting bolt 42 by simply rotating the manual knob 43 exposed on the base 41 of the luggage rack when installing or removing the luggage rack crossbar 4, without having to carry or look for any tools (such as wrenches, Allen wrenches, etc.). This makes the entire assembly process more user-friendly and improves convenience.

[0031] Next, please refer to the following: Figure 1 and Figure 5 In an embodiment of this utility model, a sealing gasket 5 is provided between the upper surface of the luggage rack crossbar base 41 and the top trim 1. The sealing gasket 5 is used to seal the mounting hole 11 when the luggage rack crossbar 4 is not installed; and to seal the contact surface between the luggage rack crossbar base 41 and the top trim 1 when the luggage rack crossbar 4 is installed.

[0032] It should be noted that in traditional installation methods, microscopic gaps inevitably exist between the metal base and the plastic / coated surface of the roof trim. Rainwater from high-speed driving, high-pressure water washing, and mud and dust from muddy roads can easily seep in. The sealing gasket 5, as a soft, compressible medium, is compressed when the connecting bolt 42 is tightened, perfectly filling the microscopic unevenness and gaps between the roof rack crossbar base 41 and the surface of the roof trim 1, forming a physical barrier. This effectively prevents moisture and corrosive impurities from penetrating the mounting holes 11 below, the concealed bracket 3, and the body metal structure, thereby preventing corrosion of the concealed bracket 3 and connecting bolt 42, ensuring their long-term structural strength and removability. It also prevents water from seeping into the interior of the roof trim 1 or the body lining, avoiding interior mold or electronic circuit malfunctions.

[0033] In addition, continuous vibrations occur during vehicle operation, which can cause abnormal noises at the connection between the roof rack crossbar base 41 and the roof trim 1. Furthermore, stress concentration may lead to surface wear or micro-cracks on the roof trim 1. The sealing gasket 5, typically made of elastic materials such as rubber and silicone, possesses certain shock-absorbing and cushioning properties. It can absorb and attenuate vibration energy, reducing vibrations transmitted from the vehicle body to the roof rack crossbar base, eliminating minor displacements and friction between the roof rack crossbar base 41 and the roof trim 1, effectively preventing abnormal noises, and ensuring more even load distribution, thus protecting the surface of the roof trim 1 from indentations or damage caused by hard contact.

[0034] In addition, tolerances exist in automobile manufacturing. For example, slight deviations may exist in the roof profile, roof trim installation height, and bracket welding positions. These deviations can cause the roof rack crossbar base 41 and the roof trim 1 surface to not fit perfectly. The compressibility of the sealing gasket 5 can adaptively compensate for these unavoidable manufacturing and assembly tolerances. Even if there are slight unevennesses on the contact surface, the gasket can deform under pressure, ensuring the integrity of the sealing surface. This ensures that every vehicle off the production line achieves a consistent and reliable sealing effect, improving production consistency and product quality.

[0035] In summary, the roof rack crossbar mounting structure based on the roof trim provided by this utility model, through the component of an "openable cover," can be "removably covered over the mounting holes of the roof trim" when not in use. This means that when the roof rack crossbar is not needed, the cover can completely conceal the mounting holes and the internal concealed brackets, keeping the roof appearance consistent with the roof trim's flat and smooth surface, without any abrupt exposed parts. Compared with the prior art solutions of "direct exposed installation" or "fixed non-openable cover," this actively and reversibly achieves the concealment and display of the mounting point, thereby significantly improving the vehicle's aesthetics and overall appearance.

[0036] Furthermore, this invention introduces a "concealed bracket," explicitly stating that it is "fixed to the side structure of the vehicle body." This design establishes a direct, high-strength force transmission path from the roof rack crossbar to the vehicle frame. When the roof rack crossbar is under stress, the load is transferred to the concealed bracket via bolts, and then distributed from the concealed bracket to the robust side structure of the vehicle body (such as reinforced sheet metal). The roof trim strip primarily serves a decorative and sealing function during this process, bearing virtually no major load. Therefore, this solution fundamentally avoids the risks of deformation and loosening caused by insufficient strength of the roof trim strip material, ensuring the long-term safety and reliability of the roof rack crossbar.

[0037] In addition, this utility model combines an "openable cover" with a "threaded connection on a concealed bracket" to form a "quickly accessible and robust connection point." Users can simply open the cover to expose the mounting holes and threaded connection for installing or removing the roof rack crossbar. After completion, closing the cover restores the aesthetic appeal. This design gives users the ability to install or remove the roof rack crossbar as needed, perfectly solving the problem of poor flexibility in "fixed cover" solutions and meeting diverse usage scenarios.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A luggage rack crossbar mounting structure based on a top trim strip, characterized in that, Including: A top trim strip (1), an openable trim cover (2), a hidden bracket (3) and a roof rack crossbar (4); An installation hole (11) is provided on the top trim strip (1); The openable trim cover (2) is detachably covered on the installation hole (11); The hidden bracket (3) is fixedly arranged on the vehicle body side structure and is located below the top trim strip (1). A threaded connection part (31) corresponding to the installation hole (11) is provided on the hidden bracket (3); A connection bolt (42) cooperating with the threaded connection part (31) is provided on the base (41) of the roof rack crossbar (4). When installing the roof rack crossbar (4), open the openable trim cover (2), and make the connection bolt (42) of the roof rack crossbar (4) pass through the installation hole (11) and be fixedly connected with the threaded connection part (31) of the hidden bracket (3), so as to fix the roof rack crossbar (4) on the vehicle roof.

2. The luggage rack crossbar mounting structure based on the top trim strip according to claim 1, characterized in that, The openable trim cover (2) is snap-fitted at the installation hole (11) of the top trim strip (1) by an interference fit method.

3. The luggage rack crossbar mounting structure based on the top trim strip according to claim 2, characterized in that, A plurality of snap protrusions (21) are provided on the side surface of the openable trim cover (2), and the snap protrusions (21) are in interference fit with the edge of the installation hole (11).

4. The luggage rack crossbar mounting structure based on the top trim strip according to claim 1, characterized in that, The hidden bracket (3) is fixedly arranged on the side wall reinforcement sheet metal of the vehicle body by welding.

5. The luggage rack crossbar mounting structure based on the top trim strip according to claim 1, characterized in that, The hidden bracket (3) has a "C" - shaped structure.

6. The luggage rack crossbar mounting structure based on the top trim strip according to claim 1, characterized in that, The threaded connection part (31) of the hidden bracket (3) is a welded nut.

7. The luggage rack crossbar mounting structure based on the top trim strip according to claim 1, characterized in that, A sealing gasket (5) is provided between the base (41) of the roof rack crossbar (4) and the upper surface of the top trim strip (1).

8. The luggage rack crossbar mounting structure based on the top trim strip according to claim 1, characterized in that, A manual knob (43) is provided on the connection bolt (42).

9. The luggage rack crossbar mounting structure based on the top trim strip according to claim 1, characterized in that, The hidden bracket (3) is made of high-strength aluminum steel material and its surface is subjected to anti-corrosion treatment.

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