A replaceable rotary electric tow hook

Abstract

This invention addresses the problems of limited functionality and inconvenient assembly / disassembly of existing trailer hitches by providing a replaceable rotary electric tow hook. The tow hook includes a rotary drive component, a connecting component, and a tow hook arm. The connecting component is used for fixed connection to an external vehicle, and the rotary drive component is fixedly mounted on the connecting component. The tow hook arm is mounted on the rotary drive component and moves in tandem with its rotation. One end of the tow hook arm has a hollow collar that fits onto the rotating end of the rotary drive component. The other end of the tow hook arm has a connecting pipe for connecting to a trailer hitch or luggage rack. This design enriches the functionality of the tow hook and facilitates easy replacement.

Description

Technical Field

[0001] This utility model relates to the field of trailer hook technology, and in particular to a replaceable rotary electric trailer hook. Background Technology

[0002] During vehicle use, to cope with unexpected situations, a tow hook is usually installed at the rear of the vehicle, as shown in patent application publication number CN120327155A. However, the existing tow hooks are generally hook-shaped, and can only be used to suspend a tow rope to complete the towing work. Their function is limited and they are difficult to use for adding structures such as roof racks. When installing a roof rack at the traditional vehicle tow hook location, the tow hook must be removed first, and then the roof rack must be installed and fixed to the vehicle frame, which is inconvenient. Therefore, there is a need for a vehicle tow hook that is easy to replace and adapt to different suspension structures. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a replaceable rotary electric tow hook.

[0004] To solve the above problems, the present invention adopts the following solution:

[0005] A replaceable rotary electric tow hook includes a rotary drive, a connector, and a tow hook arm. The connector is used for fixed connection with an external vehicle, and the rotary drive is fixedly mounted on the connector. The tow hook arm is mounted on the rotary drive and moves with the rotation of the rotary drive. One end of the tow hook arm is provided with an internally hollow collar, which is sleeved on the rotating end of the rotary drive. The other end of the tow hook arm is provided with a connecting pipe for connecting to a trailer hitch or a luggage rack.

[0006] Furthermore, the interior of the connecting pipe is configured as a square hollow pipe, and a fixing hole penetrating the connecting pipe is also provided on the side of the connecting pipe.

[0007] Furthermore, a pin is provided in the fixing hole for easy and quick disassembly; one end of the pin passes through the connecting pipe and the trailer hook or luggage rack and is connected to the open key.

[0008] Furthermore, the rotation drive includes a motor located inside the vehicle frame and connected via a connector to a tow hook cantilever located outside the vehicle frame.

[0009] Furthermore, the rotation drive component also includes a rotating shaft, rollers, and a positioning sleeve; wherein the rotating shaft is connected to the motor and rotates with the motor; the rotating shaft is provided with several first grooves that match the rollers; the positioning sleeve is sleeved on the outside of the rotating shaft and is also fixedly connected to the connecting piece; the positioning sleeve is provided with several through holes for embedding the rollers, and the rollers are located in the through holes and move along the depth direction of the through holes; the collar at one end of the tow hook arm is rotatably sleeved on the outside of the positioning sleeve, and the rollers are located between the collar and the rotating shaft; the inner wall of the collar is provided with several second grooves that match the rollers; when the tow hook arm is relaxed, the rollers are located in the first grooves on the rotating shaft, close to the axis of the rotating shaft; when the tow hook arm is locked, the rollers disengage from the first grooves on the rotating shaft and enter the second grooves provided on the collar.

[0010] Furthermore, the two sides of the first groove have an asymmetrical structure, with one side having a smaller slope.

[0011] Furthermore, a coil spring is provided between the rotating shaft and the positioning sleeve to help the rotating shaft reset.

[0012] Furthermore, the tow hook arm is also provided with holes for placing a terminal block, which is used to connect to external electrical equipment.

[0013] The beneficial effects of this utility model are as follows:

[0014] By setting a hollow connecting tube on the tow hook arm, the connecting tube can be used to adapt to various structures such as trailer hooks or luggage racks, enriching the function of the tow hook part and making it easy to replace;

[0015] The connection is achieved by using a pin and a key at the fixing hole of the connecting tube, which facilitates quick disassembly and replacement of the connecting tube.

[0016] By setting the structure of the rotation drive component, the tow hook arm can be locked and loosened, making it convenient to rotate and hide the tow hook arm, or rotate and open the tow hook arm.

[0017] By installing a coil spring between the shaft and the positioning sleeve, the shaft can be controlled to return to and maintain its initial state when no external force is applied, thus saving the motor's power consumption. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0019] Figure 2 This is an exploded view of the overall structure of Example 1;

[0020] Figure 3 This is a front view of the overall structure of Example 1;

[0021] Figure 4 for Figure 3A schematic diagram of the AA cross-section.

[0022] Explanation of reference numerals in the attached drawings: Rotation drive component 1, motor 11, rotating shaft 12, roller 13, positioning sleeve 14, first groove 15, coil spring 16, fixed plate 17, connecting component 2, tow hook cantilever 3, collar 31, connecting pipe 32, fixing hole 33, pin 34, second groove 35, trailer hook 4. Detailed Implementation

[0023] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the figures only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] Example 1:

[0026] like Figures 1-4 As shown, a replaceable rotary electric tow hook includes a rotary drive 1, a connector 2, and a tow hook arm 3. The connector 2 is used for fixed connection with an external vehicle, and the rotary drive 1 is fixedly mounted on the connector 2. The tow hook arm 3 is mounted on the rotary drive 1 and moves in response to the rotation of the rotary drive 1. In this example, the rotary drive 1 includes a motor 11 for providing rotational torque, which can rotate in both directions. One end of the tow hook arm 3 is provided with a hollow collar 31, which is sleeved on... Rotating end of drive component 1; In this example, the inside of collar 31 is a hollow cylinder, and its shape is frustum-shaped. The side of collar 31 with a larger bottom area is close to connector 2. This can enhance the load strength of collar 31, because when the tow hook arm 3 is under force, the force on collar 31 is applied more to the side closer to connector 2; The other end of tow hook arm 3 is provided with connecting pipe 32, which is an open connection and can be used to connect to a matching trailer hook 4 or luggage rack.

[0027] The interior of the connecting pipe 32 is a square hollow tube, and a fixing hole 33 is provided on the side of the connecting pipe 32 to fix the matching trailer hook 4 or luggage rack inside the connecting pipe 32, preventing it from shaking, shifting, or deflecting. A pin 34 for easy quick release is provided in the fixing hole 33; one end of the pin 34 passes through the connecting pipe 32 and the trailer hook 4 or luggage rack and connects to the open key. Because the force on the pin 34 is mainly perpendicular to the axis of the pin 34, the open key on it will not be subjected to a large force, ensuring that the pin 34 is not easy to come out of the fixing hole 33 while achieving the effect of quick release; in some other embodiments, bolts and nuts can also be used to fix the connection at the fixing hole 33.

[0028] The motor 11 in the rotation drive component 1 is located inside the hollow vehicle frame. The connecting component 2 is plate-shaped and covers the opening on the vehicle frame. The motor 11 passes through the connecting component 2 and connects to the tow hook arm 3 located outside the vehicle frame. The rotation drive component 1 also includes a rotating shaft 12, rollers 13, and a positioning sleeve 14. The rotating shaft 12 is connected to the motor 11 and rotates with the motor 11. The rotating shaft 12 is provided with several first grooves 15 that match the rollers 13. The positioning sleeve 14 is sleeved on the outside of the rotating shaft 12 and is also fixedly connected to the connecting component 2. The positioning sleeve 14 is provided with several through holes for embedding the rollers 13. The rollers 13 are located in the through holes and move along the depth direction of the through holes. The collar 31 at one end of the tow hook arm 3 is rotatably sleeved on the outside of the positioning sleeve 14, and the rollers 13 are located between the collar 31 and the rotating shaft 12. The inner wall of the collar 31 is provided with several second grooves 35 that match the rollers 13. When the rollers 13 are located in the first groove 15 on the rotating shaft 12, the rollers 13 are close to the axis of the rotating shaft 12, and the collar 31 and the positioning sleeve 14 can rotate relative to each other, keeping the tow hook cantilever 3 in a relaxed state. When the rollers 13 disengage from the first groove 15 on the rotating shaft 12 and enter the second grooves 35 on the collar 31, a part of the rollers 13 is located in the through hole on the positioning sleeve 14, and the other part is located in the second groove 35 on the collar 31, thus achieving the effect of locking the tow hook cantilever 3. It should be noted that the two sides of the arc surface of the first groove 15 are asymmetrical, with one side having a smaller slope. This facilitates the rollers 13 to roll away from the first groove 15 from the side with the smaller slope, reducing the jerking sensation between the first groove 15 and the rollers 13 when the rotating shaft 12 rotates, and extending the service life.

[0029] A detachable fixing plate 17 is also provided at the end of the positioning sleeve 14 away from the connector 2. The fixing plate 17 is fixedly connected to the positioning sleeve 14 by a threaded structure. The fixing plate 17 is used to restrict the collar 31 of the tow hook cantilever 3 that is rotatably connected on the positioning sleeve 14.

[0030] A coil spring 16 is also provided between the rotating shaft 12 and the positioning sleeve 14 to help the rotating shaft 12 reset. In this example, the initial state of the rotating shaft 12 corresponds to the locked state of the tow hook arm 3. At this time, the roller 13 is located in the second groove 35. When the rotating shaft 12 and the positioning sleeve 14 are locked, the force of the roller 13 on the rotating shaft 12 is mainly radial pressure, and the tangential torque of the rotating shaft 12 is small. Therefore, the coil spring 16, which has a weak load capacity, can also stably maintain the locked state of the tow hook arm 3, saving the power consumption of the motor 11.

[0031] The tow hook arm 3 is also provided with holes for placing a terminal block. The terminal block is used to connect to external electrical equipment, so that when the tow hook arm 3 is connected to the luggage rack, it can provide power to the taillights on the luggage rack. Because some larger luggage racks may block the taillights and affect the driving of vehicles behind, taillights are also provided on some luggage racks.

[0032] During implementation, a hollow connecting tube 32 is provided on the tow hook arm 3. The connecting tube 32 can be used to adapt to various structures such as the trailer hook 4 or luggage rack, and it is easy to replace. The connecting tube 32 is connected by a pin 34 and an open key through the fixing hole 33, which facilitates quick disassembly and replacement of the connecting tube 32. The structure of the rotation drive 1 is provided to lock and loosen the tow hook arm 3, which makes it easy to rotate and hide the tow hook arm 3 or rotate and open the tow hook arm 3. The coil spring 16 is provided between the rotating shaft 12 and the positioning sleeve 14 to control the rotating shaft 12 to return to and maintain its initial state when it is not subjected to external force, thus saving the power consumption of the motor 11.

[0033] The above description is merely a specific example of this utility model and does not constitute any limitation on this utility model. Obviously, those skilled in the art, after understanding the content and principle of this utility model, may make various modifications and changes in form and details without departing from the principle and structure of this utility model. However, these modifications and changes based on the concept of this utility model are still within the protection scope of the claims of this utility model.

Claims

1. A replaceable rotary electric tow hook, comprising a rotary drive (1), a connector (2), and a tow hook arm (3), wherein the connector (2) is used for fixed connection with an external vehicle, the rotary drive (1) is fixedly mounted on the connector (2); the tow hook arm (3) is mounted on the rotary drive (1) and moves in response to the rotation of the rotary drive (1); characterized in that, One end of the tow hook cantilever (3) is provided with an internally hollow collar (31), which is sleeved on the rotating end of the rotating drive (1); the other end of the tow hook cantilever (3) is provided with a connecting pipe (32), which is used to connect the trailer hook (4) or the luggage rack.

2. The replaceable rotary electric tow hook according to claim 1, characterized in that, The interior of the connecting pipe (32) is set as a square hollow pipe, and the side of the connecting pipe (32) is also provided with a fixing hole (33) that penetrates the connecting pipe (32).

3. A replaceable rotary electric tow hook according to claim 2, characterized in that, The fixing hole (33) is provided with a pin (34) for easy and quick disassembly; one end of the pin (34) passes through the connecting pipe (32) and the trailer hook (4) or luggage rack and is connected to the open key.

4. The replaceable rotary electric tow hook according to claim 1, characterized in that, The rotation drive (1) includes a motor (11) located inside the vehicle frame and connected to a tow hook arm (3) located outside the vehicle frame via a connector (2).

5. A replaceable rotary electric tow hook according to claim 4, characterized in that, The rotating drive component (1) further includes a rotating shaft (12), rollers (13), and a positioning sleeve (14); wherein the rotating shaft (12) is connected to the motor (11) and rotates with the motor (11); the rotating shaft (12) is provided with several first grooves (15) that match the rollers (13); the positioning sleeve (14) is sleeved on the outside of the rotating shaft (12), and the positioning sleeve (14) is also fixedly connected to the connecting component (2); the positioning sleeve (14) is provided with several through holes for embedding the rollers (13), and the rollers (13) are located in the through holes and move along the depth direction of the through holes; the tow hook cantilever (3) One end of the collar (31) is rotated and sleeved on the outside of the positioning sleeve (14), and the roller (13) is located between the collar (31) and the rotating shaft (12); the inner wall of the collar (31) is provided with several second grooves (35) that match the roller (13); when the tow hook arm (3) is relaxed, the roller (13) is located in the first groove (15) on the rotating shaft (12), close to the axis of the rotating shaft (12); when the tow hook arm (3) is locked, the roller (13) disengages from the first groove (15) on the rotating shaft (12) and enters the second groove (35) provided on the collar (31).

6. A replaceable rotary electric tow hook according to claim 5, characterized in that, The two sides of the first groove (15) are asymmetrical structures, with one side having a smaller slope.

7. A replaceable rotary electric tow hook according to claim 5, characterized in that, A coil spring (16) to help the rotating shaft (12) reset is also provided between the rotating shaft (12) and the positioning sleeve (14).

8. A replaceable rotary electric tow hook according to claim 1, characterized in that, The tow hook cantilever (3) is also provided with holes for placing a terminal block, which is used to connect to external electrical equipment.

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