Automobile rear tow hook towing device

Abstract

The utility model discloses a kind of automobile rear tow hook traction devices, adopt the cooperation of triangular main block and reinforcing beam, significantly improve the carrying capacity and structural stability of device, buffer is constituted by adjustable length long screw and carbon fiber spiral ring piece, effectively absorb the impact force of initial stage of traction, avoid stress concentration;Through spherical clamping rod, rotatable stress strip, automatic rebound guiding file rod, form self-locking holding space, while ensuring the convenience of operation, reliable anti-falling protection is realized;At the same time, the setting of water diversion hole enhances the adaptability of environment;Improved traction device shows significant advantages in structural strength, buffering performance, operation safety and use convenience.

Description

Technical Field

[0001] This utility model belongs to the technical field of automobile traction equipment, specifically relating to an automobile rear tow hook traction device. Background Technology

[0002] The rear tow hook is a key component of a vehicle used to connect trailers, tractors, or other towing equipment. It is typically fixedly installed on the main frame or load-bearing structure at the rear of the vehicle. Its core function is to achieve a reliable connection between the towing vehicle and the towed object through components such as the tow hook, mounting bracket, and safety chain, and to withstand huge towing loads, thereby ensuring the safety and stability of the towing process in various scenarios such as transportation, camping, and emergency rescue.

[0003] Currently, the most common types of rear tow hook towing devices on the market are fixed, detachable, and retractable. Fixed tow hooks have a simple structure and strong load-bearing capacity, but they are exposed for a long time, affecting the vehicle's appearance and making them susceptible to corrosion. Detachable tow hooks solve the problems of aesthetics and theft prevention, but their installation and disassembly process is cumbersome, and frequent disassembly and reassembly may increase the connection gap and reduce reliability. Retractable tow hooks hide the tow hook through an internal mechanism, balancing aesthetics and convenience, but their internal structure is complex, manufacturing costs are high, and in harsh conditions such as mud and snow, the retraction mechanism is prone to jamming and failure due to dirt intrusion.

[0004] Furthermore, existing towing devices, after connecting to components such as the trailer ball joint and tow rope, experience complex multi-directional impact loads at the connection points during vehicle movement, especially on bumpy roads or during emergency braking. Traditional devices primarily rely on structural rigidity to withstand these loads, lacking effective buffering and damping mechanisms. This can easily lead to premature metal fatigue at the connection points, resulting in poor towing smoothness and posing safety hazards. Simultaneously, the towing device's long-term exposure to the external environment makes its mechanical interfaces and locking mechanisms susceptible to rust and buildup from rainwater and salt. This not only accelerates component wear but can also cause locking failure or prevent rapid disengagement in emergencies, posing significant safety risks. Utility Model Content

[0005] To address the aforementioned problems, the main objective of this utility model is to design a vehicle rear tow hook traction device that can effectively buffer multi-directional impacts, adapt to harsh working conditions, and has a longer service life and greater ease of operation, while ensuring high load-bearing capacity and reliable connection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A vehicle rear tow hook towing device includes a main body block and a towing part disposed on the main body block; The main body block has a main force-bearing rod on the upper surface of the first end and a mounting mechanism for connecting to the vehicle frame at the second end. The traction unit includes a fixing plate, a force-bearing strip, and a spherical locking rod; the fixing plate is disposed on the upper surface of the main body block and adjacent to the main force-bearing rod; the force-bearing strip is rotatably disposed inside the fixing plate; the spherical locking rod is movably connected to the main body block and located below the force-bearing strip, and a reset body is disposed on the lower surface of the main body block corresponding to the spherical locking rod; wherein, the force-bearing strip, the fixing plate, and the spherical locking rod constitute a locking space for locking the traction connector; A lower pressure plate is provided at the upper end of the main force-bearing rod, and the lower surface of the lower pressure plate overlaps the upper part of the force-bearing rod; An adjustment mechanism for changing the distance between the lower pressure plate and the main body block is provided between the lower pressure plate and the main body block.

[0007] As a further description of this utility model, the adjustment mechanism includes a long screw that passes through the lower pressure plate and the main body block, and a nut that engages with the lower end of the long screw.

[0008] As a further description of this utility model, a spiral annular plate is fitted on the long screw, and the spiral annular plate is located between the lower pressure plate and the main body block.

[0009] As a further description of this utility model, the spiral annular plate is made of carbon fiber.

[0010] As a further description of this utility model, the fixing plate includes two symmetrically arranged plates, each with a guide rod rotatably connected to the outer side of the spherical locking rod at its top, and the fixing plate includes an elastic element for keeping the guide rod in its reset position.

[0011] As a further description of this utility model, the guide lever is hinged to the fixed plate via a pin, and the elastic element is a torsion spring sleeved on the pin.

[0012] As a further description of this utility model, the main body block is an isosceles triangle, with the first end being the apex of the main body block and the second end being the bottom of the main body block. The main force-bearing rod is disposed on the upper surface of the apex of the main body block, and the mounting mechanism is disposed on the outer side of the bottom of the main body block.

[0013] As a further description of this utility model, a reinforcing beam is provided on the outer surface of the main body block. The reinforcing beam extends from the top corner of the main body block to the bottom and is distributed on both sides of the main force-bearing rod.

[0014] As a further description of this utility model, the mounting mechanism includes a mounting plate fixed to the second end of the main body block, and a main mounting plate and a secondary mounting plate extending from both sides of the mounting plate toward the bottom end of the main body block, wherein a plurality of extrusion strips are provided on the mounting plate.

[0015] As a further description of this utility model, a water inlet hole is provided at the second end of the main body block.

[0016] Compared with the prior art, the technical effects of this utility model are as follows: This utility model provides a vehicle rear tow hook traction device. It employs a triangular main block combined with a reinforcing beam, significantly improving the device's load-bearing capacity and structural stability. An adjustable-length screw and a carbon fiber spiral ring plate form a buffer, effectively absorbing the impact force during the initial traction stage and preventing stress concentration. A spherical locking rod, a rotatable force-bearing strip, and an automatically rebounding guide rod create a self-locking holding space, ensuring both ease of operation and reliable anti-fall-off protection. Simultaneously, the inclusion of a water inlet enhances environmental adaptability. This traction device demonstrates significant advantages in structural strength, buffering performance, operational safety, and ease of use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the overall structure of this utility model; Figure 2 This is a three-dimensional detailed view of the overall structure of this utility model; Figure 3 This is a rear structural view of the main body block of this utility model; Figure 4 This is a structural view of the bottom end of the main block of this utility model.

[0018] In the diagram, 1. Main body block, 11. Reinforcing beam, 2. Traction part, 21. Fixing plate, 22. Force-bearing bar, 23. Spherical locking rod, 24. Reset body, 3. Main force-bearing rod, 31. Lower pressure plate, 4. Installation mechanism, 41. Mounting plate, 42. Main mounting plate, 43. Secondary mounting plate, 44. Extrusion bar, 5. Adjustment mechanism, 51. Long screw, 52. Nut, 53. Spiral annular plate, 6. Water inlet hole, 7. Guide bar. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings: In one embodiment of this utility model, a car rear tow hook traction device is disclosed, such as... Figure 1-4As shown, it includes a main block 1 and a traction unit 2 disposed on the main block 1; the main block 1 is an equilateral or isosceles triangular main platform, and a main force-bearing rod 3 is disposed on the upper surface of the first end of the main block 1, and a mounting mechanism 4 for connecting to the vehicle frame is disposed on the second end. The traction device is installed on the vehicle through the mounting mechanism 4, and the specific installation method is determined according to the actual vehicle scenario, including welding, drilling bolt installation, etc. The traction unit 2 includes a fixing plate 21, a force-bearing strip 22, and a spherical locking rod 23. The fixing plate 21 is disposed on the upper surface of the main body block 1 and adjacent to the main force-bearing rod 3. The force-bearing strip 22 is made of aluminum alloy and is rotatably disposed on the inner side of the fixing plate 21. The spherical locking rod 23 is movably connected to the main body block 1 and is located below the force-bearing strip 22. A reset body 24 is disposed on the lower surface of the main body block 1 corresponding to the spherical locking rod 23. The force-bearing strip 22, the fixing plate 21, and the spherical locking rod 23 constitute a locking space for locking the traction connector, which is equivalent to reversing the installation of the existing rear tow hook. A lower pressure plate 31 is disposed at the upper end of the main force-bearing rod 3, and the lower surface of the lower pressure plate 31 overlaps the upper part of the force-bearing strip 22. An adjustment mechanism 5 for changing the distance between the lower pressure plate 31 and the main body block 1 is provided between the lower pressure plate 31 and the main body block 1.

[0020] It should be noted that the above-mentioned spherical locking rod 23 and the reset body 24 cooperate to lock and reset in the prior art, and the movable connection of the spherical locking rod 23 on the main body block 1 is also a structure that can be achieved by the prior art.

[0021] In this embodiment, the main body block 1 is configured as an isosceles triangle, with the first end being the apex and the second end being the bottom. The main load-bearing rod 3 is located on the upper surface of the apex of the main body block 1, and the mounting mechanism 4 is located on the outer side of the bottom of the main body block 1. Furthermore, reinforcing beams 11 are provided on the outer surface of the main body block 1, extending from the apex to the bottom and distributed on both sides of the main load-bearing rod 3. This enhances the physical properties of the main body block 1.

[0022] The aforementioned mounting mechanism 4 includes a mounting plate 41 fixed to the second end of the main body block 1, and a main mounting plate 42 and a secondary mounting plate 43 extending from both sides of the mounting plate 41 toward the bottom of the main body block 1. The mounting plate 41 is provided with several extrusion strips 44, which are made of aluminum alloy. The aluminum in the aluminum alloy has a certain degree of ductility, ensuring the stability of the installation contact surface. A water inlet hole 6 is opened at the second end of the main body block 1, and the mounting plate 41 is welded to the outer surface of the water inlet hole 6. The main mounting plate 42 and the secondary mounting plate 43 provide effective installation.

[0023] The aforementioned adjustment mechanism 5 includes a long screw 51 that passes through the lower pressure plate 31 and the main body block 1, and a nut 52 that engages with the lower end of the long screw 51. A spiral annular plate 53 is fitted onto the long screw 51. The spiral annular plate 53 is made of carbon fiber and is located between the lower pressure plate 31 and the main body block 1. By tightening or loosening the nut 52 on the long screw 51, the distance between the lower pressure plate 31 and the main body block 1 can be adjusted in conjunction with the spiral annular plate 53.

[0024] In this embodiment, the aforementioned fixing plate 21 includes two symmetrically arranged plates, such as... Figure 1-4 As shown, it is an inverted L-shape, with a guide rod 7 rotatably connected to the outer side of the spherical locking rod 23 at its top. The fixing plate 21 includes an elastic element inside to keep the guide rod 7 in a reset position. Specifically, the guide rod 6 is hinged to the fixing plate 21 via a pin, and the elastic element is a torsion spring sleeved on the pin.

[0025] It should be noted that the rotational engagement and reset of the guide lever 6 and the fixed plate 21 mentioned above include, but are not limited to, the pin and torsion spring mentioned above, as well as any other means that enable the top of the guide lever 6 to be hinged to the fixed plate 21 and to be reset.

[0026] The above embodiments disclose the rear tow hook traction device of this utility model. The use of the device includes four stages: installation preparation, traction connection, traction operation and safe disassembly.

[0027] Installation preparation stage: First, using the mounting plate, main mounting plate, and auxiliary mounting plate, the entire towing device is securely installed to the main frame or load-bearing structure at the rear of the vehicle. The specific installation method can be welding or bolting, depending on the actual scenario. The extrusion strips on the mounting plate utilize the ductility of aluminum alloy to ensure a tight and stable contact with the vehicle body.

[0028] Secondly, by turning the nut, the effective length of the long screw is adjusted, thereby changing the distance between the lower pressure plate and the main block. This operation pre-limits the rear end of the force bar to ensure that it is in the optimal working position before being handled.

[0029] During the traction connection phase: Press down on the spherical locking lever, causing it to move downwards against the force of the internal spring plate of the reset body, widening the opening between the spherical locking lever and the lower edge of the force-bearing bar; place the towing rope or trailer's traction structure into the widened opening from below; release the spherical locking lever, which automatically returns to its original position under the elastic force of the reset body. Simultaneously, the guide lever pops out to provide one-way check, preventing accidental disengagement during vehicle vibrations. At this point, the towing rope or trailer's traction structure is completely locked within the holding space formed by the force-bearing bar, the fixing plate, and the spherical locking lever.

[0030] During the traction operation: When the towing vehicle begins to apply pulling force, the force is applied to the force-bearing bar through the traction rope, etc. The force-bearing bar acts as a lever, with its front end (clamping end) subjected to an upward force and its rear end subjected to a downward force, pressing down on the pressure plate. At the initial impact moment, the spiral ring plate on the long screw is first compressed, undergoing elastic deformation, effectively absorbing and buffering the impact, protecting the traction device from rigid impact; as the pulling force continues and becomes stable, the force of the force-bearing bar is transmitted to the pressure plate, the main force-bearing bar, the main body block, and finally to the vehicle frame.

[0031] Safe disassembly phase: After the traction operation is completed, press the ball-shaped locking rod down again to move it down, thereby expanding the locking space outlet, and remove the traction rope or traction structure from the device. The reset body resets the ball-shaped locking rod, and the operation is completed.

[0032] The rear tow hook traction device of this utility model has the following advantages compared with the prior art: 1. This utility model adopts a main block platform with reinforcing beams to form a stable truss structure, which evenly distributes the traction impact force, avoids stress concentration, greatly improves the tensile strength, impact resistance and overall structural rigidity of the product, and effectively prevents deformation or breakage; 2. This utility model, through its reverse installation design, transmits the traction force to the main body block via the force-bearing strip, the lower pressure plate, and the main force-bearing rod. This increases the force-bearing point from the traditional two ends of the bottom edge to the bottom edge reinforcing beam, forming a multi-path force dispersion and enhancing the stability and reliability of the load-bearing capacity. 3. The long screw of this utility model, together with the nut and the spiral ring plate, forms a buffer, which absorbs most of the impact force in the initial stage of traction, avoids sudden force, extends the service life of the device, and improves the smoothness and safety of the traction process. 4. The ball-shaped locking rod of this utility model, together with the reset body, is easy to operate and facilitates the removal and placement of traction ropes, etc. It forms a one-way check valve with the guide bar, effectively preventing accidents caused by the traction ropes, etc., coming off on bumpy roads. 5. The water inlet provided by this utility model can drain rainwater in a timely manner, avoid water accumulation that could cause component corrosion, and improve the durability of the device under harsh conditions.

[0033] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A vehicle rear tow hook traction device, characterized in that, It includes a main body block and a traction part disposed on the main body block; The main body block has a main force-bearing rod on the upper surface of the first end and a mounting mechanism for connecting to the vehicle frame at the second end. The traction unit includes a fixing plate, a force-bearing strip, and a spherical locking rod; the fixing plate is disposed on the upper surface of the main body block and adjacent to the main force-bearing rod; the force-bearing strip is rotatably disposed inside the fixing plate; the spherical locking rod is movably connected to the main body block and located below the force-bearing strip, and a reset body is disposed on the lower surface of the main body block corresponding to the spherical locking rod; wherein, the force-bearing strip, the fixing plate, and the spherical locking rod constitute a locking space for locking the traction connector; A lower pressure plate is provided at the upper end of the main force-bearing rod, and the lower surface of the lower pressure plate overlaps the upper part of the force-bearing rod; An adjustment mechanism for changing the distance between the lower pressure plate and the main body block is provided between the lower pressure plate and the main body block.

2. The vehicle rear tow hook traction device according to claim 1, characterized in that: The adjustment mechanism includes a long screw that passes through the lower pressure plate and the main body block, and a nut that engages with the lower end of the long screw.

3. The vehicle rear tow hook traction device according to claim 2, characterized in that: A spiral annular plate is fitted onto the long screw, and the spiral annular plate is located between the lower pressure plate and the main body block.

4. The vehicle rear tow hook traction device according to claim 3, characterized in that: The spiral annular plate is made of carbon fiber.

5. A vehicle rear tow hook traction device according to claim 1, characterized in that: The fixing plate includes two symmetrically arranged plates, each with a guide rod rotatably connected to the outer side of the spherical locking rod at its top, and the fixing plate includes an elastic element inside for keeping the guide rod in its reset position.

6. A vehicle rear tow hook traction device according to claim 5, characterized in that: The guide lever is hinged to the fixed plate via a pin, and the elastic element is a torsion spring sleeved on the pin.

7. A vehicle rear tow hook traction device according to claim 1, characterized in that: The main body block is an isosceles triangle, with the first end being the apex and the second end being the bottom. The main force-bearing rod is located on the upper surface of the apex of the main body block, and the mounting mechanism is located on the outer side of the bottom of the main body block.

8. A vehicle rear tow hook traction device according to claim 7, characterized in that: The outer surface of the main block is provided with reinforcing beams, which extend from the top corner of the main block to the bottom and are distributed on both sides of the main load-bearing rod.

9. A vehicle rear tow hook traction device according to claim 7 or 8, characterized in that: The mounting mechanism includes a mounting plate fixed to the second end of the main block, and a main mounting plate and a secondary mounting plate extending from both sides of the mounting plate toward the bottom end of the main block. Several extrusion strips are provided on the mounting plate.

10. A vehicle rear tow hook traction device according to claim 1 or 7, characterized in that: A water inlet hole is provided at the second end of the main block.

Images