A clamp for a vehicle roof

Abstract

This invention discloses a clamp for vehicle roofs, belonging to the field of fixing devices. It solves the problems of poor locking effect and short service life of existing clamps. The technical solution mainly includes a clamp body, a hook rod, and a rotating component. The hook rod penetrates the clamp body and includes a rod body with external threads and a hook located at the bottom of the rod body. The rotating component is fitted onto the outside of the rod body and threadedly connected to it. The rotating component can rotate to push the clamp body closer to the hook, so that the pressing surface presses against the vehicle-mounted object. Compared with the prior art, this application achieves locking force through the threaded engagement between the rod body and the rotating component. The threaded engagement has strong self-locking performance, can resist and withstand large external forces, can effectively adapt to the frequent vibrations generated by the vehicle, reduces the possibility of automatic unlocking of the clamp, and makes the clamp have a better clamping effect.

Description

Technical Field

[0001] This invention demonstrates a clamp for vehicle roofs, belonging to the field of fixture technology. Background Technology

[0002] Nowadays, people often carry ladders, luggage, tools and other items on the roof of their vehicles. They usually use clamps to fix the items to the roof rack to prevent them from slipping off during driving.

[0003] Currently, the commonly used clamp is the cam-type quick-locking clamp. This type of clamp includes an anchoring component and a clamping component. The anchoring component includes an extension rod and a hook. The clamping component includes a main body and a locking assembly. The locking assembly locks the extension rod inside the main body. The locking assembly includes a handle, a cam, and a locking plate. The extension rod passes through the locking plate. The handle is outside the main body and is rotatably connected to the cam. The rotation of the cam causes the locking plate to tilt upward. The cam has a groove for the end of the locking plate to be inserted. The locking assembly has an open state and a locked state. In the open state, the end of the locking plate is inserted into the groove, and the locking plate is perpendicular to the extension rod, allowing the extension rod to slide freely along the main body. In the locked state, the cam lifts the locking plate, and the inner wall of the through hole of the locking plate grips the extension rod, thereby locking the extension rod inside the main body.

[0004] In the aforementioned clamp, the locking plate and the extension rod are locked through electrical or wire contact. The locking force of the locking plate on the extension rod is relatively weak. During vehicle operation, significant vibrations can easily cause relative displacement between the extension rod and the locking plate, leading to a gradual loosening of the clamping between the hook and the main body. The self-locking performance of the locking assembly is poor, which significantly reduces the clamping effect of the clamp. In addition, after the locking plate and the extension rod are locked, the force on the extension rod is concentrated. With the vibration of the vehicle, the surface of the extension rod is easily worn. As the extension rod wears, the gap between the locking plate and the extension rod gradually increases. Since the lifting stroke of the cam on the locking plate is fixed, the locking force of the locking plate on the extension rod gradually decreases until it can no longer effectively lock. Therefore, the service life of this type of clamp is relatively low. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of poor locking effect of existing clamps. To this end, a clamp for vehicle roof is provided, which can improve the locking force of the clamp.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A clamp for a vehicle roof, the clamp being used to secure vehicle-mounted items on the roof of a vehicle, the clamp comprising: The clamp body has a pressing surface at its bottom; A hook rod extends through the clamp body and includes a rod body with external threads and a hook disposed at the bottom of the rod body, the hook being connected to the roof of the vehicle; A rotating component is fitted onto the outside of the rod and threadedly connected to the rod. The rotating component can rotate to push the clamp closer to the hook so that the pressing surface presses against the vehicle-mounted object.

[0007] The beneficial effects of using the present invention are: In this invention, after the hook rod and clamp body clamp the vehicle-mounted object, the locking force is achieved through the threaded engagement between the rod body and the rotating component. The threaded engagement has strong self-locking performance, which can resist and withstand large external forces, effectively adapt to the frequent vibrations generated by the vehicle, reduce the possibility of the clamp automatically unlocking, and make the clamp have a better clamping effect. In addition, the threaded engagement has a larger contact area, which can effectively disperse the external forces on the rod body, reduce the wear of the rod body, and thus extend the service life of the clamp.

[0008] Preferably, the clamp further includes a locking component, which has a locked state and an unlocked state; when the locking component is in the locked state, the locking component restricts the rotation of the rotating member, and when the locking component is in the unlocked state, the rotating member can rotate freely.

[0009] Preferably, the locking assembly includes a positioning groove disposed on the rotating member and a positioning post disposed on the clamp that can extend into the positioning groove; when the positioning post extends into the positioning groove and restricts the rotation of the rotating member, the locking assembly is in the locked state.

[0010] Preferably, the rotating component is provided with a plurality of positioning grooves, all of which are distributed circumferentially on the bottom of the rotating component.

[0011] Preferably, the locking assembly further includes a latch, and the clamp body has a through hole through which the positioning post passes; when the locking assembly is in the locked state, the latch restricts the positioning post from retracting into the through hole; when the locking assembly is in the unlocked state, the latch separates from the positioning post, and the rotating member can push the positioning post to retract into the through hole.

[0012] Preferably, the clamp body has an internal receiving cavity, and the locking assembly further includes a lock body, which is fixed to the inner wall of the receiving cavity, and the lock body forms a lock hole on the surface of the clamp body. The lock tongue is rotatably connected to the lock body and is located in the receiving cavity.

[0013] Preferably, the clamp includes a body and a cover plate, the receiving cavity is disposed in the body and forms an opening on the side of the body, the cover plate is detachably connected to the body to close the opening, and the locking hole is formed on the side of the body opposite to the opening.

[0014] Preferably, the locking assembly further includes a spring plate, one end of which is fixed to the clamp and the other end is connected to the positioning post. The spring plate acts on the positioning post to cause the top of the positioning post to tend to expose the through hole.

[0015] Preferably, the top of the positioning post and / or the positioning groove is a spherical or curved surface.

[0016] Preferably, the clamp further includes an adjusting member disposed on the rotating member, the adjusting member having an engaged state and a disengaged state; when the adjusting member is in the engaged state, the rotating member is threadedly connected to the rod body, and when the adjusting member is in the disengaged state, the rotating member is slidably connected to the rod body.

[0017] Preferably, the rotating component is provided with a first shaft hole and a first sliding hole. The first shaft hole passes through the rotating component and allows the rod to pass through. The first sliding hole communicates with the first shaft hole, and the adjusting component is installed in the first sliding hole.

[0018] Preferably, the adjusting member has a notch, with an abutment portion formed on one side and a clearance area formed on the other side; the rod passes through the notch, and when the rod engages with the abutment portion, the adjusting member is in the engaged state, and when the rod is in the clearance area, the adjusting member is in the disengaged state.

[0019] Preferably, the adjusting member further includes a first spring located between the adjusting member and the rotating member, the first spring holding the adjusting member in the engaged state.

[0020] Preferably, the side of the adjusting member is provided with a limiting groove, and the first sliding hole is provided with a limiting block distributed along the length direction of the first sliding hole. The limiting block is embedded in the limiting groove to restrict the circumferential rotation of the adjusting member.

[0021] Preferably, the clamp is provided with a second shaft hole through which the rod passes and a second sliding hole communicating with the second shaft hole. A pressure plate and a second spring are provided in the second sliding hole. The second spring acts on the pressure plate to make the pressure plate have a tendency to move against the rod. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the fixture in one embodiment of the present invention; Figure 2 This is a cross-sectional view of a clamp in one embodiment of the present invention; Figure 3 This is an exploded view of the clamp and rotating component in one embodiment of the present invention; Figure 4This is a schematic diagram of the internal structure of the receiving cavity in one embodiment of the present invention; Figure 5 A cross-sectional view of the main body in one embodiment of the present invention. Figure 1 ; Figure 6 A cross-sectional view of the main body in one embodiment of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the locking component in one embodiment of the present invention; Figure 8 This is a schematic diagram of the rotating component in one embodiment of the present invention; Figure 9 This is a cross-sectional view of the rotating component in one embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the adjusting member in one embodiment of the present invention. Figure 1 ; Figure 11 This is a schematic diagram of the structure of the adjusting member in one embodiment of the present invention. Figure 2 ; Figure 12 This is a schematic diagram of a vehicle-mounted object being fixed to a roof rack on the roof of a vehicle in one embodiment of the present invention.

[0023] Reference numerals: 1. Clamp body; 11. Clamp arm; 111. Pressing surface; 112. Protrusion; 12. Main body; 121. Second shaft hole; 122. Receiving cavity; 123. Through hole; 124. Cover plate; 13. Second sliding hole; 131. Pressure plate; 132. Second spring; 2. Hanging rod; 21. Rod body; 211. External thread; 22. Hook; 23. Cap; 3. Rotating component; 30. Adjustment Components; 301, notch; 302, abutment part; 303, limiting groove; 31, first shaft hole; 32, first sliding hole; 321, first spring; 322, limiting block; 33, positioning groove; 34, lug; 4, locking assembly; 41, lock body; 411, lock hole; 42, lock tongue; 43, positioning post; 431, top end; 44, spring piece; 45, fastener; 5, ladder; 6, top frame. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," "counterclockwise," etc. (if present) indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc. (if applicable), should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] like Figures 1 to 12 As shown, this embodiment illustrates a clamp for a vehicle roof, used to clamp and secure vehicle-mounted items to the roof of a car. The clamp includes a clamp body 1, a hook rod 2, and a rotating component 3. The clamp body 1 has a second shaft hole 121 extending downwards through the main body 12, and a pressing surface 111 at the bottom. The hook rod 2 includes a rod body 21 and a hook 22. The surface of the rod body 21 has external threads, and the rod body 21 passes through the second shaft hole 121, allowing it to slide relative to the clamp body 1 along the second shaft hole 121. The hook 22 is located at the bottom of the rod body 21 and is used to connect to the roof rack 6 of the car roof. A pressing area is formed between the hook 22 and the pressing surface 111. The rotating component 3 is fitted onto the outer periphery of the rod body 21 and can be threadedly connected to the rod body 21. The rotating component 3 is located on the upper side of the clamp body 1 away from the hook 22. During use, the hook rod 2 is connected to the roof rack 6 of the car via the hook 22. The clamp 1 is placed on the vehicle's cargo, thus positioning the cargo within the holding area. The operator moves the rotating component 3, causing it to move downwards along the rod 21. When the rotating component 3 contacts the top of the clamp 1, it pushes the clamp 1 downwards relative to the rod 21, moving it closer to the hook 22, until the holding surface 111 of the clamp 1 abuts against the cargo on the roof, thereby securing the cargo to the vehicle. It should be noted that, to prevent the cargo from swaying due to external forces, when the holding surface 111 of the clamp 1 abuts against the cargo on the roof, the rotating component 3 needs to be rotated further to push the clamp 1 to press the cargo firmly, thus securing the cargo securely to the roof rack 6 of the car.

[0028] In addition, the locking assembly 4 includes several circumferentially distributed positioning grooves 33 disposed at the bottom end of the rotating member 3 near the clamping body 1, and positioning posts 43 disposed on the clamping body 1 that can extend into the positioning grooves 33. The locking assembly 4 has a locked state and an unlocked state. When the locking assembly 4 is in the locked state, the positioning posts 43 are positioned and engaged with the positioning grooves 33 and restrict the rotation of the rotating member 3. When the locking assembly 4 is in the unlocked state, the rotating member 3 can rotate freely.

[0029] In this embodiment, after the hook rod 2 and the clamp 1 press the vehicle-mounted object together, the rotating part 3 is in a locked state. At this time, the locking force is achieved through the threaded engagement between the rod 21 and the rotating part 3. The threaded engagement has strong self-locking performance, which can resist and withstand large external forces. It can effectively adapt to the frequent vibrations generated by the car, reduce the possibility of the clamp automatically unlocking, and make the clamp have a better clamping effect. In addition, the threaded engagement has a larger contact area, which can effectively disperse the external force on the rod 21, reduce the wear of the rod 21, and thus extend the service life of the clamp. Secondly, when the locking component 4 is in the locked state, the positioning pin 43 extends into the positioning groove 33 and restricts the rotating part 3 from continuing to rotate. The positioning engagement between the positioning pin 43 and the positioning groove 33 can lock the rotating part 3, further restricting the rotation of the rotating part 3. Even if subjected to vibration or external force, the rotating part 3 is not likely to loosen due to self-rotation, so that the clamp can maintain a long-term and reliable clamping force on the vehicle-mounted object, improve the clamping stability of the clamp, and reduce the possibility of the vehicle-mounted object falling off the roof. In addition, the clamp body 1 can be infinitely adjusted by rotating the rotating part 3 to press down, which can adapt to vehicle-mounted objects of different thicknesses and sizes.

[0030] Specifically, such as Figure 1 and Figure 2As shown, in this embodiment, the clamp 1 is generally elongated. The clamp 1 includes a main body 12 and two clamping arms 11 located on both sides of the main body 12. The two clamping arms 11 extend to both sides of the main body 12, and the extension direction of the clamping arms 11 is perpendicular to the axial direction of the second shaft hole 121. The second shaft hole 121 is provided on the main body 12, and the pressing surface 111 is formed on the bottom end surface of the clamping arm 11 facing the hook 22. It should be noted that in this embodiment, the vehicle-mounted object is a ladder 5, which is placed on the roof rack 6 of the car. The hook 22 passes through the middle of the ladder 5 and hooks the roof rack 6. The rotating component 3 pushes the clamp 1 downward so that the two clamping arms 11 respectively abut against the ladder bars on both sides of the ladder 5. The connection point between the hook 22 and the roof rack 6 is located between the two pressing surfaces 111, making the force on the clamp more uniform and improving the fixing reliability of the clamp on the ladder 5. In addition, the end of the clamping arm 11 away from the main body 12 is provided with a downwardly extending protrusion 112. When the clamping arm 11 abuts against the ladder bar of the ladder 5, the two protrusions 112 are respectively located on both sides of the ladder 5. The two protrusions 112 can constrain the ladder 5 to slide along the length direction of the clamping arm 11, ensuring that the pressing surface 111 can always act on the ladder 5, making the clamp pressing the ladder 5 more stable and reliable.

[0031] Specifically, such as Figure 4 and Figure 7As shown, in this embodiment, the inner side of the main body 12 is provided with a receiving cavity 122. The locking assembly 4 also includes a locking tongue 42, a locking body 41, and a spring plate 44. The top of the main body 12 near the rotating part 3 is provided with a through hole 123 and a mounting hole. Both the through hole 123 and the mounting hole are connected to the receiving cavity 122. A fastener 45 is fitted on the mounting hole. The fastener 45 extends from the outside of the main body 12 into the receiving cavity 122 and is fixedly connected to one end (i.e., the fixed end) of the spring plate 44, thereby allowing the spring plate 44 to be installed at the top of the receiving cavity 122. The positioning pin 43 is fixed to the other end (i.e., the free end) of the spring plate 44. The positioning pin 43 can extend and retract in the through hole 123. The positioning pin 43 slides in the through hole 123, and the spring plate 44 can undergo elastic deformation. The spring plate 44 acts on the positioning pin 43, causing the positioning pin 43 to tend to protrude from the through hole 123. In addition, the lock body 41 is fixed on the side wall of the receiving cavity 122. The lock body 41 forms a lock hole 411 on the outer surface of the main body 12. The lock tongue 42 rotates with the lock body 41. After the operator inserts the key into the lock body 41, turning the key can drive the lock tongue 42 to move up and down. When the locking assembly 4 is in the locked state, the end of the latch 42 away from the lock body 41 abuts against the lower side of the spring piece 44. The latch 42 can limit the deformation of the spring piece 44, thereby limiting the retraction of the positioning pin 43 into the through hole 123. The part of the positioning pin 43 exposed in the through hole 123 can interfere with and lock with the positioning groove 33, thereby limiting the rotation of the rotating member 3. When the locking assembly 4 is in the unlocked state, the end of the latch 42 away from the lock body 41 is separated from the positioning pin 43. At this time, the latch 42 will not contact the spring piece 44. The spring piece 44 can freely deform and bend downward. The positioning pin 43 can retract into the through hole 123 after being squeezed by the rotating member 3. The part of the positioning pin 43 exposed in the through hole 123 cannot interfere with and lock with the positioning groove 33, so that the rotating member 3 can rotate freely.

[0032] In this embodiment, switching between the locked and unlocked states of the locking component 4 only requires moving the latch 42. The state switching of the locking component 4 is simple and convenient, improving the ease and efficiency of the adjustment operation. Preferably, when the locking component 4 is in the unlocked state, the positioning post 43, supported by the spring piece 44, has its top end 431 pass through the through hole 123 and protrude from the top end of the clamping body 1, ensuring that the positioning post 43 will not arbitrarily disengage from the positioning groove 33, thus improving the positioning reliability of the positioning post 43 and the positioning groove 33. Simultaneously, the rotating member 3 can compress the positioning post 43, causing the spring piece 44 to deform, and the positioning post 43 retracts into the through hole 12. When the positioning post 43 rotates to the position aligned with the positioning groove 33, the spring piece 44 returns to its original shape, and the positioning post 43 automatically inserts into the positioning groove 33. Continuing to rotate the rotating member 3 until the positioning post 43 falls into the target positioning groove 33, the rotating member 3 is in the locked state. When the locking assembly 4 is in the locked state, the locking tongue 42 restricts the deformation of the spring piece 44 to prevent the positioning pin 43 from retracting into the through hole 12. The positioning pin 43 cannot cross the positioning groove 33, and the rotating part 3 cannot rotate freely. During the locking of the rotating part 3, the operator can clearly feel the relative rotation between the positioning pin 43 and the positioning groove 33, thus making the positioning of the rotating part 3 and the positioning pin 43 simpler and faster. Secondly, the mounting hole is set at the top of the clamping body 1, and the fastener 45 extends from the body 12 into the receiving cavity 122, that is, the head of the fastener 45 is at the top of the clamping body 1, which can facilitate the disassembly and installation of the fastener 45 and help improve the efficiency of disassembly and installation of the spring piece 44.

[0033] Specifically, such as Figure 5 and Figure 8As shown, the rotating component 3 has several positioning grooves 33 near the bottom of the clamping body 1. All positioning grooves 33 are evenly distributed circumferentially along the edge of the rotating component 3. When the rotating component 3 moves down along the rod 21 to abut against the top of the clamping body 1 and the locking component 4 is in the unlocked state, the part of the positioning post 43 exposed through the through hole 123 will contact the rotating component 3. The positioning post 43 is squeezed by the rotating component 3, and under the action of the spring piece 44, the positioning post 43 will retract into the positioning groove 33, so that the positioning post 43 continues to rotate to pass over the positioning groove 33 until the positioning post 43 is aligned with the current positioning groove 33 (at this time, the rotating component 3 is in the locked state). Preferably, the top end 431 of the positioning post 43 is a spherical or curved surface (and / or the positioning groove 33 is set as a spherical or curved surface), so that the positioning post 43 and the positioning groove 33 can push each other to move during this process. It should be noted that when only the top 43 of the positioning post 43 is spherical or curved, only the top 431 of the positioning post 43 protrudes from the through hole 123. However, when the positioning groove 33 is spherical or curved, the positioning post 43 may extend beyond its top 431 into the through hole 123. When the locking component 4 is in the unlocked state, the rotating component 3 can smoothly press the positioning post 43 downwards and retract it into the through hole 123 when rotating. This allows the operator to easily feel the pause when rotating the rotating component 3, making it easier for the operator to control the rotation range of the rotating component 3 and preventing excessive rotation. It also makes the rotating component 3 smoother and less strenuous, reducing the possibility of jamming or becoming stuck. In addition, the spherical or curved surface has a smooth transition contact with the positioning groove 33, which can greatly reduce the scratches and wear caused by repeated friction between the positioning post 43 and the positioning groove 33, helping to extend the service life of the positioning post 43.

[0034] Specifically, in this embodiment, the receiving cavity 122 forms an opening on one side of the main body 12, and the clamping body 1 also includes a cover plate 124. The cover plate 124 is detachably connected to the main body 12 to close the opening, and the locking hole 411 is formed on the side of the main body 12 opposite to the opening, thereby reducing the assembly difficulty of the locking component 4 and improving the assembly efficiency. In addition, when the locking component 4 fails or malfunctions later, it is only necessary to remove the cover plate 124 to open the opening of the receiving cavity 122, and the locking component 4 inside the receiving cavity 122 can be inspected and replaced without disassembling the entire clamping body 1, making the maintenance operation of the locking component 4 simpler and reducing maintenance costs. Secondly, the lock body 41 and the lock tongue 42 are arranged in the internal cavity 122 of the clamping body 1, with only the lock hole 411 exposed. The rotation and engagement structure of the lock tongue 42 is not exposed, which can effectively prevent rainwater, mud and dust from affecting the lock body 41 and the lock tongue 42. This can effectively reduce the possibility of corrosion of the lock body 41 and the lock tongue 42, reduce the possibility of jamming during the rotation of the lock tongue 42, make the operation of the locking component 4 more stable, and also improve the service life of the locking component 4.

[0035] In this embodiment, the rotating member 3 is provided with a first shaft hole 31 and a first sliding hole 32. The first shaft hole 31 passes through the middle of the rotating member 3 and allows the rod 21 to pass through. The first sliding hole 32 communicates with the first shaft hole 31 and extends to the side of the rotating member 3. An adjusting member 30 is slidably installed in the first sliding hole 32. The adjusting member 30 is provided with an abutment part 302 that is threadedly engaged with the rod 21. The rotating member 3 is elastically loaded and has a tendency to move so that the abutment part 302 is threadedly engaged with the rod 21. The adjusting member 30 has an engaged state and a disengaged state relative to the rotating member 3. In the engaged state, the rotating component 3 is threadedly connected to the rod 21, and the adjusting component 30 is threadedly engaged with the rod 21. Rotating the rotating component 3 allows for fine-tuning of the distance by which it pushes the clamping body 1. Simultaneously, the first spring 321 applies a preload to the adjusting component 30, ensuring a tight fit between the abutting part 302 of the adjusting component 30 and the external thread 211 of the rod 21. This makes the contact surface between the adjusting component 30 and the rod 21 more complete and reliable, improving the stability of the clamping fixture. In the disengaged state, the rotating component 3 is slidably connected to the rod 21, and the abutting part 302 is separated from the rod 21. The rod 21 is slidably engaged with the rotating component 3, allowing it to slide rapidly along the rotating component 3, thereby quickly pushing the clamping body 1. This enables rapid clamping and disassembly, improving the efficiency of the clamping fixture. Furthermore, the rotating component 3 is threadedly engaged with the rod body 21 via the abutment portion 302 of the adjusting component 30. When the abutment portion 302 wears down, only the adjusting component 30 needs to be replaced, without replacing the entire rotating component 3, thus reducing the maintenance cost of the rotating component 3. It should be noted that when the rotating component 3 is in the locked state, the vehicle-mounted object is pressed by the clamp 1. At this time, due to the strong locking force between the threads of the rotating component 3 and the rod body 21, it is impossible to press the adjusting component 30 to switch it from the engaged state to the disengaged state. Therefore, the locking component 4 not only prevents the rotating component 3 from continuing to rotate, but also prevents the adjusting component 30 from being pressed to separate the rotating component 3 from the rod body 21, thus giving the clamp a good anti-theft effect.

[0036] like Figure 1 and Figure 2 As shown, to prevent the rotating part 3 from detaching from the rod 21 during rapid sliding, a cap 23 is provided at the end of the rod 21 away from the hook 22. The cap 23 is also threadedly connected to the rod 21, facilitating the installation and removal of the cap 23 from the rod 21. Figure 3 As shown, lugs 34 are provided on both sides of the rotating component 3 to facilitate rotation of the rotating component 3. When the operator needs to rotate the rotating component 3, he / she can push the lugs 34 to perform this operation.

[0037] like Figure 9As shown, in this embodiment, the adjusting member 30 has a notch 301 on its side. One side of the notch 301 forms a clearance area to allow the rod 21 to pass through, and the other side forms an abutment portion 302 within the notch 301. The two ends of the first sliding hole 32 are respectively located on both sides of the first shaft hole 31. After the adjusting member 30 is installed into the first sliding hole 32, the notch 301 of the adjusting member 30 is aligned with the first shaft hole 31, and the rod 21 passes through the notch 301. When the adjusting member 30 is in the engaged state, the abutment portion 302 engages with the rod 21 in the first shaft hole 31, and the rotating member 3 is threadedly connected to the rod 21. When the adjusting member 30 is in the disengaged state, the rod 21 in the first shaft hole 31 is located in the clearance area, and the adjusting member 30 is slidably connected to the rod 21. Furthermore, the adjusting member 30 also includes a first spring 321, which is disposed within the first sliding hole 32. The first spring 321 abuts against the adjusting member 30 and the rotating member 3, giving the adjusting member 30 a tendency to extend out of the first sliding hole 32, thus keeping the adjusting member 30 in the engaged state. When it is necessary to switch the adjusting member 30 to the disengaged state, the operator needs to press the adjusting member 30. In addition, the notch 301 of the adjusting member 30 can position the rod 21, allowing the abutment portion 302 to reliably and accurately engage with the external thread 211 of the rod 21, making the threaded fit more complete and reliable, and the force between the rod 21 and the abutment portion 302 more even.

[0038] To make the sliding of the adjusting component 30 smoother, such as Figure 9 As shown, in this embodiment, the side of the adjusting member 30 is provided with a limiting groove 303, and the first sliding hole 32 is provided with limiting blocks (not shown) distributed along the length direction of the first sliding hole 32. The limiting blocks are embedded in the limiting groove 303 to restrict the circumferential rotation of the adjusting member 30. The limiting blocks and the limiting groove 303 cooperate to constrain the circumferential rotation, thereby preventing the abutment part 302 and the rod body 21 from misaligning, jamming, or not engaging properly, making the threaded engagement smoother and more stable. In addition, the cooperation between the limiting block and the limiting groove 303 can guide the adjusting member 30 to slide along the axial direction of the first sliding hole 32, making the sliding of the adjusting member 30 smoother.

[0039] like Figure 4 and Figure 6 As shown, in this embodiment, the clamp 1 is also provided with a second sliding hole 13 that communicates with the second shaft hole 121. The axial direction of the second sliding hole 13 is perpendicular to the axial direction of the second shaft hole 121. A pressure plate 131 and a second spring 132 are provided in the second sliding hole 13. The second spring 132 acts on the pressure plate 131, causing the pressure plate 131 to have a tendency to move against the rod 21. The pressure plate 131 elastically presses the rod 21, which can form a radial constraint on the rod 21, reduce the possibility of the rod 21 swinging left and right or tilting at will, and make the axial sliding of the rod 21 smoother.

[0040] When securing the vehicle-mounted cargo to the roof rack 6: First, place the vehicle's cargo on the roof rack 6, hooking the hook 22 of the mounting rod 2 onto the roof rack 6, with the clamp 1 positioned on the side of the cargo away from the roof rack 6. Next, press the adjusting member 30 to disengage it, quickly moving the rotating member 3 towards the clamp 1 until it pushes the clamp 1's pressing surface 111 against the cargo. Then, release the adjusting member 30 to engage it, rotating the rotating member 3 to continue pushing the clamp 1 until it is fully pressed against the clamp 1 and difficult to rotate further; at this point, the rotating member 3 is locked. Finally, insert the key to lock the locking assembly 4. With the rotating member 3 locked, it cannot rotate freely, thus securing the cargo.

[0041] When removing cargo from the roof rack 6: First, insert the key to unlock the locking assembly 4, allowing the rotating part 3 to rotate freely. Second, rotate the rotating part 3 to release it from the clamp 1, thus releasing its locking state. Then, press the adjusting piece 30 to disengage it, allowing the rotating part 3 to move quickly away from the clamp 1 until it is completely away. Finally, with the rotating part 3 no longer obstructing the clamp 1, move it away from the hook 22 until the load can be removed from the roof rack 6, completing the operation.

[0042] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A clamp for a vehicle roof, the clamp being used to clamp a vehicle-mounted object on the roof of a vehicle, characterized in that, The clamp includes: The clamp body has a pressing surface at its bottom; A hook rod extends through the clamp body and includes a rod body with external threads and a hook disposed at the bottom of the rod body, the hook being connected to the roof of the vehicle; A rotating component is fitted onto the outside of the rod and threadedly connected to the rod. The rotating component can rotate to push the clamp closer to the hook so that the pressing surface presses against the vehicle-mounted object.

2. A clamp for a vehicle roof according to claim 1, characterized in that, The clamp also includes a locking component, which has a locked state and an unlocked state; when the locking component is in the locked state, the locking component restricts the rotation of the rotating member, and when the locking component is in the unlocked state, the rotating member can rotate freely.

3. A clamp for a vehicle roof according to claim 2, characterized in that, The locking assembly includes a positioning groove disposed on the rotating member and a positioning post disposed on the clamp that can extend into the positioning groove; when the positioning post extends into the positioning groove and restricts the rotation of the rotating member, the locking assembly is in the locked state.

4. A clamp for a vehicle roof according to claim 3, characterized in that, The rotating component is provided with multiple positioning grooves, all of which are distributed circumferentially on the bottom of the rotating component.

5. A clamp for a vehicle roof according to claim 3, characterized in that, The locking assembly further includes a latch, and the clamp body has a through hole through which the positioning post passes; when the locking assembly is in the locked state, the latch restricts the positioning post from retracting into the through hole; when the locking assembly is in the unlocked state, the latch separates from the positioning post, and the rotating member can push the positioning post to retract into the through hole.

6. A clamp for a vehicle roof according to claim 5, characterized in that, The clamp body has an internal receiving cavity, and the locking assembly also includes a lock body. The lock body is fixed to the inner wall of the receiving cavity, and the lock body forms a lock hole on the surface of the clamp body. The lock tongue is rotatably connected to the lock body and is located in the receiving cavity.

7. A clamp for a vehicle roof according to claim 6, characterized in that, The clamp includes a main body and a cover plate. The receiving cavity is disposed in the main body and forms an opening on the side of the main body. The cover plate is detachably connected to the main body to close the opening. The locking hole is formed on the side of the main body opposite to the opening.

8. A clamp for a vehicle roof according to any one of claims 3-7, characterized in that, The locking assembly also includes a spring plate, one end of which is fixed to the clamp and the other end is connected to the positioning post. The spring plate acts on the positioning post to cause the top of the positioning post to tend to expose the through hole.

9. A clamp for a vehicle roof according to claim 3, characterized in that, The top of the positioning post and / or the positioning groove is a spherical or curved surface.

10. A clamp for a vehicle roof according to claim 1, characterized in that, The clamp further includes an adjusting member disposed on the rotating member. The adjusting member has an engaged state and a disengaged state. When the adjusting member is in the engaged state, the rotating member is threadedly connected to the rod body. When the adjusting member is in the disengaged state, the rotating member is slidably connected to the rod body.

11. A clamp for a vehicle roof according to claim 10, characterized in that, The rotating component is provided with a first shaft hole and a first sliding hole. The first shaft hole passes through the rotating component and allows the rod to pass through. The first sliding hole communicates with the first shaft hole, and the adjusting component is installed in the first sliding hole.

12. A clamp for a vehicle roof according to claim 10, characterized in that, The adjusting member has a notch, with an abutment portion formed on one side and a clearance area formed on the other side; the rod is inserted into the notch, and when the rod engages with the abutment portion, the adjusting member is in the engaged state, and when the rod is in the clearance area, the adjusting member is in the disengaged state.

13. A clamp for a vehicle roof according to claim 10, characterized in that, The adjusting member further includes a first spring located between the adjusting member and the rotating member, the first spring keeping the adjusting member in the engaged state.

14. A clamp for a vehicle roof according to claim 11, characterized in that, The side of the adjusting member is provided with a limiting groove, and the first sliding hole is provided with a limiting block distributed along the length direction of the first sliding hole. The limiting block is embedded in the limiting groove to restrict the circumferential rotation of the adjusting member.

15. A clamp for a vehicle roof according to claim 1, characterized in that, The clamp is provided with a second shaft hole through which the rod passes and a second sliding hole communicating with the second shaft hole. A pressure plate and a second spring are provided in the second sliding hole. The second spring acts on the pressure plate to make the pressure plate have a tendency to move against the rod.

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