A clamping device and a roof rail

Abstract

The application provides a clamping device and a roof cross bar. The clamping device is provided with a fixed first clamping plate and a movable second clamping plate, a first bolt is movable in a strip-shaped slot of the second clamping plate, and the first bolt provides one degree of freedom for the second clamping plate, allowing the second clamping plate to move up and down and swing within a certain range. By tightening or reversely loosening a second bolt, the clamping part of the second clamping plate can be accurately pushed or pulled back, so that the included angle and distance between the clamping part of the second clamping plate and the clamping part of the first clamping plate are changed, and the clamping function is realized. The stepless adjustment of the clamping distance and angle of the two clamping plates is realized. Compared with the existing scheme in which the relative two clamping plates can only be parallelly close, the adjustable angle of the second clamping plate can form a V shape or three-point contact, the rigid clamping is changed into self-adaptive wrapping of different shapes of roof longitudinal beams, the adaptability and universality of the clamping device are greatly improved, the structure is simple, and the operation is convenient. The V-shaped opening and the three-point support form a stable mechanical structure, and the anti-vibration performance and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a clamping device and a roof crossbar. Background Technology

[0002] Roof crossbars, also known as roof racks, are supports installed on the roof longitudinal beams or the exposed surface of the roof to facilitate the transport of large items. Roof longitudinal beams are also called roof rails or roof side rails. Some cars have roof longitudinal beams, while others have only a bare roof. A roof crossbar consists of a main crossbeam and clamping devices at both ends mounted on the main crossbeam. These clamping devices secure the roof longitudinal beam to the exposed roof surface or to the roof frame, thus fixing the roof crossbar to the car roof.

[0003] Current clamping devices for holding roof longitudinal beams, such as the roof crossbar with adjustable length shown in Chinese Utility Patent Publication No. CN223407859U, include a first clamping plate, a second clamping plate, and two adjusting bolts that control the first and second clamping plates to move parallel to each other and approach each other. The two clamping plates move in parallel to form a planar or line contact for clamping. This method is only suitable for roof longitudinal beams of specific diameters and shapes, and has a relatively narrow range of applications.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] This utility model provides a clamping device and a roof crossbar to solve at least one of the above-mentioned technical problems.

[0006] To address the aforementioned problems, as one aspect of this utility model, a clamping device is provided, comprising a clamping base, a first clamping plate, a second clamping plate, a first bolt, and a second bolt; the first clamping plate is fixedly connected to the clamping base; the second clamping plate includes a mounting portion and a clamping portion; the mounting portion has a strip groove and a first threaded through hole located above or below the strip groove; the first bolt can pass through the strip groove, and its end is threadedly connected to the clamping base to control the maximum distance between the strip groove of the second clamping plate and the clamping base; the second bolt is connected in the first threaded through hole, and its end abuts against the clamping base to control the distance between the first threaded through hole of the second clamping plate and the clamping base in real time, thereby controlling the distance and clamping angle of the second clamping plate relative to the first clamping plate.

[0007] Preferably, the strip extends vertically, the first bolt can slide vertically within the strip, and a spherical washer is provided at the bolt head of the first bolt.

[0008] Preferably, the end of the second bolt is spherical.

[0009] Preferably, the first clamping plate includes a first panel for abutting against the object being clamped, the first panel being generally vertically arranged; the clamping portion of the second clamping plate includes a second panel with a V-shaped opening obliquely upward toward the first plane.

[0010] Preferably, the clamping base includes a vertical connecting portion adapted to the first bolt and an inclined abutting portion adapted to the second bolt, the inclined abutting portion being inclined upward from the vertical connecting portion away from the second clamping plate.

[0011] Preferably, the vertical connecting portion and the inclined abutting portion of the clamping base are integrally formed or welded from the first clamping plate and extend upward; the clamping base also includes a nut sleeve, which is fixedly connected to the vertical connecting portion.

[0012] Preferably, it further includes a locking mechanism, which is mounted on the clamping base and used to lock with the main crossbeam.

[0013] This application also provides a roof crossbar, including a main crossbeam and two clamping devices as described above; the two clamping devices are installed at both ends of the main crossbeam.

[0014] Preferably, the clamping device includes a locking mechanism, and the two ends of the main crossbeam are provided with fastening cavities arranged along its length direction; the locking mechanism includes a support crossbeam disposed on the clamping base and slidably fitted in the fastening cavity, and a fastening component for fastening and loosening the support crossbeam and the main crossbeam.

[0015] Preferably, the clamping device further includes a housing for enclosing the clamping device, and a wrapping portion extending toward the main crossbeam for fitting around the outside of the main crossbeam; the housing includes a first housing and a second housing, which are connected by a key lock.

[0016] This invention features a fixed first clamping plate and a movable second clamping plate. The movement of the first bolt within the groove of the second clamping plate provides a degree of freedom for the second clamping plate, allowing it to move up and down and swing within a certain range. By tightening or loosening the second bolt, the clamping part of the second clamping plate can be precisely pushed or pulled back, thereby changing the angle and distance between it and the clamping part of the first clamping plate, thus achieving the clamping function. It realizes stepless adjustment of the clamping distance and angle of the two clamping plates. Compared with the existing solution where the two clamping plates can only approach each other parallel to each other, the adjustable angle of the second clamping plate can form a V-shape or three-point contact, changing from rigid clamping to adaptive wrapping of roof longitudinal beams of different shapes, greatly improving the adaptability and versatility of the clamping device. The structure is simple and easy to operate. Furthermore, the V-shaped opening and three-point support form a stable mechanical structure, improving vibration resistance and reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a vehicle body crossbar according to an embodiment of this utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of the hidden side clamping device;

[0019] Figure 3 yes Figure 1 A schematic diagram of the clamping device;

[0020] Figure 4 yes Figure 3 A schematic diagram of the hidden outer shell;

[0021] Figure 5 yes Figure 4 A structural diagram from a second perspective;

[0022] Figure 6 yes Figure 4 A schematic diagram of the structure of the second clamping plate;

[0023] Figure 7 yes Figure 3 A schematic diagram of the structure of the hidden first shell;

[0024] Figure 8 yes Figure 7 A schematic diagram of the structure of the hidden first clamping plate and its extension;

[0025] Figure 9 yes Figure 8 A schematic diagram of the structure of the nut sleeve and the first bolt;

[0026] The markings in the diagram are as follows: 1. Clamping device; 11. Clamping base; 111. Vertical connecting part; 112. Inclined abutment part; 113. Nut sleeve; 12. First clamping plate; 121. First panel; 13. Second clamping plate; 131. Mounting part; 1311. Strip groove; 1312. First threaded through hole; 132. Clamping part; 1321. Second panel; 14. First bolt; 141. Spherical washer; 15. Second bolt; 151. Spherical end; 16. Locking mechanism; 161. Support beam; 162. Fastening assembly; 17. Outer shell; 171. First shell; 172. Second shell; 173. Key lock; 2. Main beam; 21. Fastening cavity. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Please refer to Figures 1 to 9 A clamping device 1 includes a clamping base 11, a first clamping plate 12, a second clamping plate 13, a first bolt 14, and a second bolt 15.

[0029] The first clamping plate 12 is fixedly connected to the clamping base 11, so that it is stationary relative to the clamping base 11, so that when the second clamping plate 13 is adjusted relative to the clamping base 11, the angle and distance are simultaneously adjusted relative to the first clamping plate 12.

[0030] The second clamping plate 13 includes a mounting portion 131 and a clamping portion 132; the mounting portion 131 has a strip groove 1311 and a first threaded through hole 1312 located above or below the strip groove 1311; in this embodiment, preferably, the first threaded through hole 1312 is above the strip groove 1311.

[0031] The first bolt 14 can pass through the strip groove 1311 and its end is threadedly connected to the clamping base 11 to control the maximum distance between the strip groove 1311 of the second clamping plate 13 and the clamping base 11; therefore, when clamping the roof longitudinal beam, the first clamping plate 12 abuts against one side of the roof longitudinal beam, and the first bolt 14 tightens, so that the second clamping plate 13 is close to the other side of the roof longitudinal beam, thus controlling the distance between the two clamping plates in the first step.

[0032] The second bolt 15 is connected to the first threaded through hole 1312, and its end abuts against the clamping base 11 to control the distance between the first threaded through hole 1312 of the second clamping plate 13 and the clamping base 11 in real time, thereby controlling the distance and clamping angle of the second clamping plate 13 relative to the first clamping plate 12.

[0033] The movement of the first bolt 14 within the slot 1311 of the second clamping plate 13 provides a degree of freedom for the second clamping plate 13, allowing it to move up and down and swing within a certain range. By tightening or loosening the second bolt 15 in the opposite direction, using the first bolt 14 as a fulcrum, the clamping part 132 of the second clamping plate 13 can be precisely pushed or pulled back, thereby changing the angle and distance between it and the clamping part of the first clamping plate 12, thus achieving the clamping function. This achieves stepless adjustment of the clamping distance and angle between the two clamping plates. Compared to the existing solution where the two clamping plates can only approach each other in parallel, the adjustable angle of the second clamping plate 13 can form a V-shape or three-point contact, transforming rigid clamping into adaptive wrapping of roof longitudinal beams of different shapes, greatly improving the adaptability and versatility of the clamping device 1. The structure is simple and the operation is convenient. Furthermore, the V-shaped opening and the three-point support constitute a stable mechanical structure, improving vibration resistance and reliability.

[0034] The groove 1311 extends vertically, and the first bolt 14 can slide vertically within the groove 1311. The connection between the first bolt 14 and the clamping base 11 is fixed. The vertical groove 1311 can guide the second clamping plate 13 to move vertically, providing a clear and stable movement trajectory for adjusting the clamping height, thereby adapting to roof longitudinal beams of different heights.

[0035] Please refer to Figure 4 and Figure 5 A spherical washer 141 is provided at the bolt head of the first bolt 14. The spherical washer 141 provides a spherical contact point, so that the bolt head and the clamping plate can maintain surface contact even when the second clamping plate 13 is tilted due to the adjustment angle, thereby reducing resistance.

[0036] Preferably, the first clamping plate 12 includes a first panel 121 for abutting against the object being clamped, and the first panel 121 is generally vertically oriented; the clamping portion 132 of the second clamping plate 13 includes a second panel 1321 with a V-shaped opening obliquely upward toward the first plane. This ensures smooth angle adjustment of the second clamping plate 13, reduces wear, and improves the service life of the components and the user experience.

[0037] Please refer to Figures 4 to 7The first clamping plate 12 includes a first panel 121 for abutting against the object being clamped, and the first panel 121 is generally vertically oriented. The clamping portion 132 of the second clamping plate 13 includes a second panel 1321 with a V-shaped opening obliquely upward toward the first plane. The vertical first panel 121 provides a reference support surface. The obliquely upward V-shaped opening panel can form two-point contact with the other side of the roof longitudinal beam, and together with the first panel 121, constitutes a stable three-point clamping structure. At the same time, the V-shaped opening can adapt to crossbeams of different shapes. This significantly enhances the stability and reliability of clamping, effectively prevents the clamped object from rotating or falling off during vibration, and has stronger adaptability.

[0038] Preferably, the end of the second bolt 15 is a spherical end 151. The spherical end 151 forms point contact or small-area contact with the abutment surface of the clamping base 11. When adjusting the angle, the spherical surface can roll smoothly, greatly reducing sliding friction. This makes the operation of fine-tuning the clamping angle by rotating the second bolt 15 more effortless and precise, while also improving the service life of the bolt and the base.

[0039] Preferably, the clamping base 11 includes a vertical connecting portion 111 adapted to the first bolt 14 and an inclined abutment portion 112 adapted to the second bolt 15. The inclined abutment portion 112 is inclined upwards and away from the second clamping plate 13 from the vertical connecting portion 111. The vertical connecting portion 111 defines the fixing point of the first bolt 14. The inclined surface of the inclined abutment portion 112 engages with the spherical end 151 of the second bolt 15. When the second bolt 15 is screwed in, its downward and outward components along the inclined surface can efficiently push the second clamping plate 13 outwards to form a specific angle. Through structural design, the linear motion of the second bolt 15 is effectively converted into the opening angle and displacement of the second clamping plate 13, making the adjustment action more efficient, more in line with mechanical principles, and the clamping state more stable.

[0040] In this embodiment, in the specific product structure, the vertical connecting part 111 and the inclined abutment part 112 can be upward extensions of the first panel 121, and their positions are fixed relative to the clamping base 11 and the first clamping plate 12, and can both be regarded as part of the clamping base 11. A locking mechanism 16 is installed on the clamping base 11 and is used to lock with the main crossbeam 2.

[0041] Please refer to Figure 9In this embodiment, the vertical connecting portion 111 and the inclined abutment portion 112 of the clamping base 11 are integrally formed by the first clamping plate 12 extending upwards. The clamping base 11 also includes a nut sleeve 113, on which a through hole is provided, and the nut sleeve 113 is fixedly connected to the corresponding through hole position of the vertical connecting portion 111. The nut sleeve 113 is specifically responsible for bearing the friction and shear stress caused by the repeated tightening of the first bolt 14. Even if the threads are damaged, only the nut sleeve 113 needs to be replaced instead of scrapping the entire clamping base 11.

[0042] In other embodiments, the vertical connecting part 111, the inclined abutting part 112 and the first clamping plate 12 can be formed in sections and then welded and fixed, which is not limited here.

[0043] The vertical connecting part 111 and the inclined abutting part 112 are integrally formed by the first clamping plate 12 and extend upward or welded, which ensures the accuracy of the relative position between the vertical connecting part 111, the inclined abutting part 113 and the first panel 121, making the distance and angle adjustment of the second clamping plate 12 more precise and smooth.

[0044] Furthermore, in this embodiment, the nut sleeve 113 and the vertical connecting part 111 are detachably fixedly connected. This detachable fixed connection can be achieved by the nut sleeve 113 body passing through a through hole in the vertical connecting part 111, with external threads and corresponding fastening nuts on both sides of the through hole for fixation. In other embodiments, welding fixation may also be used.

[0045] Furthermore, the nut sleeve 113 is made of a metal that is more wear-resistant and stronger than the material of the clamping base 11 body, such as high-grade steel or brass, thus resulting in a longer service life and greater stress resistance.

[0046] This application also provides a roof crossbar, including a main crossbeam 2 and two clamping devices 1 as described above; the two clamping devices 1 are installed at both ends of the main crossbeam 2. The locking mechanism 16 serves as the interface between the clamping devices 1 and the main crossbeam 2, and achieves quick installation and removal from the main crossbeam 2 through its own locking mechanism.

[0047] The clamping device 1 includes a locking mechanism 16. The main crossbeam 2 has fastening cavities 21 at both ends, extending along its length. The locking mechanism 16 includes a support crossbeam 161 mounted on the clamping base 11 and slidably fitted within the fastening cavity 21, and a fastening assembly 162 for fastening and loosening the support crossbeam 161 and the main crossbeam 2. The support crossbeam 161 can slide freely within the cavity, thereby changing the position of the entire clamping device 1 on the main crossbeam 2. After determining the position, the fastening assembly 162 locks the support crossbeam 161, thus fixing the clamping device 1. This achieves stepless position adjustment of the clamping device 1 on the crossbeam, greatly improving the compatibility of the roof crossbeam with different vehicle models. Specifically, this structure can be referenced in CN223407859U, a roof crossbeam with adjustable length.

[0048] Preferably, the clamping device 1 further includes a housing 17, which is used to enclose the clamping device 1 and has a wrapping portion extending toward the main crossbeam 2, which is used to fit over the outside of the main crossbeam 2. The housing 17 includes a first housing 171 and a second housing 172, which are connected by a key lock 173. The housing 17 acts as a protective cover, enclosing the delicate and fragile adjustment mechanism. The design of the key lock 173 ensures the reliability of the housing 17's closure and also provides basic anti-theft functionality, preventing others from arbitrarily opening the housing 17 to operate or remove the roof crossbeam, thus preventing the bicycle from being stolen.

[0049] 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 clamping device, characterized in that, include: Clamping base, The first clamping plate is fixedly connected to the clamping base; The second clamping plate includes a mounting part and a clamping part; The mounting portion has a strip groove and a first threaded through hole located above or below the strip groove; The first bolt passes through the slot and its end is threaded to the clamping base to control the maximum distance between the slot of the second clamping plate and the clamping base; The second bolt is connected to the first threaded through hole, and its end abuts against the clamping base to control the distance between the first threaded through hole of the second clamping plate and the clamping base in real time, thereby controlling the distance and clamping angle of the second clamping plate relative to the first clamping plate.

2. The clamping device according to claim 1, characterized in that, The groove extends vertically, the first bolt can slide vertically within the groove, and a spherical washer is provided at the bolt head of the first bolt.

3. The clamping device according to claim 2, characterized in that, The end of the second bolt is spherical.

4. The clamping device according to claim 3, characterized in that, The first clamping plate includes a first panel for abutting against the object being clamped, the first panel being generally vertically arranged; the clamping portion of the second clamping plate includes a second panel with a V-shaped opening facing upwards at an angle to the first plane.

5. The clamping device according to claim 4, characterized in that, The clamping base includes a vertical connecting portion adapted to the first bolt and an inclined abutting portion adapted to the second bolt, the inclined abutting portion being inclined upwards and away from the vertical connecting portion.

6. The clamping device according to claim 5, characterized in that, The vertical connecting part and the inclined abutting part of the clamping base are formed by integrally forming or welding the first clamping plate and extending upward; the clamping base also includes a nut sleeve, which is fixedly connected to the vertical connecting part.

7. The clamping device according to claim 4, characterized in that, It also includes a locking mechanism, which is mounted on the clamping base and used to lock with the main crossbeam.

8. A roof crossbar, characterized in that, It includes a main crossbeam and two clamping devices as described in any one of claims 1 to 7; the two clamping devices are installed at both ends of the main crossbeam.

9. The roof crossbar according to claim 8, characterized in that, The clamping device includes a locking mechanism, and the two ends of the main crossbeam are provided with fastening cavities arranged along its length direction; the locking mechanism includes a support crossbeam disposed on the clamping base and slidably fitted in the fastening cavity, and a fastening component for fastening and loosening the support crossbeam and the main crossbeam.

10. The roof crossbar according to claim 9, characterized in that, The clamping device also includes a housing for enclosing the clamping device, and a wrapping portion extending toward the main crossbeam for fitting around the outside of the main crossbeam; the housing includes a first housing and a second housing, which are connected by a key lock.

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