Trailer tractor convenient to operate

Abstract

The trailer tractor convenient to operate comprises a shell and a swing arm, a connecting plate is fixed to one end of the shell, a ball groove is formed in the connecting plate, a fixing base is fixed to the top of the shell, a second pin shaft used for limiting the swing arm is fixedly connected into the fixing base in a sleeved mode, and the second pin shaft is connected with the swing arm in a sleeved mode. The swing arm is hinged to a hook through a third pin shaft, a torsional spring used for resetting the hook is installed on the third pin shaft, the swing arm is hinged to a push-pull rod through a first pin shaft, the push-pull rod penetrates through the shell in a sliding mode, and a limiting block is fixed to the bottom end of the push-pull rod. A spring is connected between the inner wall of the shell and the limiting block and connected to the push-pull rod in a sleeving mode. The connecting structure is convenient to operate and stable in connection.

Description

Technical Field

[0001] This utility model relates to the field of towing device technology, and in particular to a trailer towing device that is easy to operate. Background Technology

[0002] A trailer tow hitch is a device used to connect a towing vehicle (such as a car or truck) and a towed vehicle (such as a disabled vehicle, RV, or trailer), enabling power transfer and towing. It is widely used in vehicle rescue, cargo transportation, and RV towing scenarios. Its core function is to ensure a secure connection between the two vehicles while balancing traction force and safety during towing. However, existing trailer tow hitches have the following main problems in practical applications: 1. Cumbersome connection operation: Traditional tow hitches mostly use bolt-fixed or snap-fit ​​connection structures, requiring operators to use tools for installation and disassembly. Especially in emergency rescue scenarios, this is time-consuming and may affect rescue efficiency. Some tow hitches require manual adjustment of multiple components, demanding a high level of operator skill and involving complex procedures prone to errors. 2. Insufficient connection stability: Some tow hitches are prone to loosening under long-term use or complex road conditions. For example, snap-fit ​​structures may unlock themselves due to vibration, causing the towed vehicle to detach, posing a serious safety hazard; while bolt connections are secure, long-term vibration may cause the bolts to loosen, requiring regular maintenance and tightening, increasing operating costs.

[0003] To address the above problems, we propose a trailer towing device that is easy to operate. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a convenient trailer towing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A user-friendly trailer tow hitch includes a housing and a swing arm. A connecting plate is fixed to one end of the housing, and a ball groove is provided on the connecting plate. A fixed seat is fixed to the top of the housing. A second pin for limiting the swing arm is fixedly sleeved inside the fixed seat. The swing arm is hinged to a hook via a third pin. A torsion spring for resetting the hook is installed on the third pin. A push-pull rod is hinged to the swing arm via a first pin. The push-pull rod slides through the housing. A limit block is fixed to the bottom end of the push-pull rod. A spring is connected between the inner wall of the housing and the limit block, and the spring is sleeved on the push-pull rod.

[0007] Preferably, the fixing base is C-shaped, and the bottom of the fixing base is provided with a slot.

[0008] Preferably, a lever is fixed on the hook.

[0009] Preferably, a guide seat is fixed inside the housing, and the limiting block is slidably installed inside the guide seat.

[0010] Preferably, the side of the limiting block has a groove with an arc-shaped cross-section.

[0011] Preferably, the swing arm is provided with a limit groove.

[0012] Preferably, the side of the housing has several bolt holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, when the lever 8 is pushed upwards, the lever 8 drives the hook 9 to move synchronously. The hook 9 is pulled out from the slot 18 at the bottom of the fixed base 3. At this time, the lever 8 rests against the swing arm 4 and pushes the swing arm 4 to rotate. The swing arm 4 contacts the top of the housing 1. Therefore, the swing arm 4 will rotate around the contact point with the top of the housing 1, thereby pulling the push-pull rod 14. At this time, the spring 10 contracts, the limit block 12 moves upwards, and then the ball groove 16 on the connecting plate 2 is sleeved onto the... Figure 11 When the spherical part of the pendant is released, the stop block 8 is released, and the limit block 12 is reset by the restoring force of the spring 10, thereby controlling the movement of the pendant. Figure 11 The ball of the hanging part is limited to prevent it from sliding out of the ball groove 16. Under the action of the torsion spring 13, the hook 9 is re-hung in the slot 18 at the bottom of the fixed base 3. At the same time, the second pin 6 can prevent the swing arm 4 from continuing to rotate, thereby avoiding the movement of the limit block 12 and ensuring the stability of the installation. It is easy to operate and the connection is firm. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a trailer towing device that is easy to operate according to the present invention.

[0016] Figure 2 A schematic diagram of the internal structure of the housing of a trailer towing device that is easy to operate according to this utility model;

[0017] Figure 3 A schematic diagram of the spring installation structure of a trailer tow hitch that is easy to operate, as proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the housing of a trailer towing device that is easy to operate, as proposed in this utility model.

[0019] Figure 5 A schematic diagram of the connecting plate of a trailer towing device that is easy to operate according to this utility model;

[0020] Figure 6A schematic diagram of the structure of a limiting block for a trailer tow hitch that is easy to operate, as proposed in this utility model;

[0021] Figure 7 A schematic diagram of the swing arm of a trailer towing device that is easy to operate according to this utility model;

[0022] Figure 8 A schematic diagram of the hook structure of a trailer tow hitch that is easy to operate according to this utility model;

[0023] Figure 9 A schematic diagram of the structure of the fixing seat of a trailer tow hitch that is easy to operate according to this utility model;

[0024] Figure 10 A schematic diagram of the structure of the guide seat of a trailer tow hitch that is easy to operate according to this utility model;

[0025] Figure 11 A mounting bracket installed on a trailer for use in conjunction with this utility model.

[0026] In the diagram: 1. Housing, 2. Connecting plate, 3. Fixing seat, 4. Swing arm, 5. First pin, 6. Second pin, 7. Third pin, 8. Toggle block, 9. Hook, 10. Spring, 11. Guide seat, 12. Limiting block, 13. Torsion spring, 14. Push-pull rod, 15. First pin, 16. Ball groove, 17. Limiting groove, 18. Slot, 19. Groove, 20. Bolt hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figure 1-11 A user-friendly trailer towing device includes a housing 1 and a swing arm 4. The housing 1 has several bolt holes 5 on its side. The housing 1 is fixedly connected to the towed equipment by bolts passing through the bolt holes 5. A connecting plate 2 is fixed to one end of the housing 1. The connecting plate 2 has a ball groove 16, which is fitted onto the towed equipment. Figure 11On the sphere of the pendant shown, a fixed base 3 is fixed to the top of the housing 1. The fixed base 3 is C-shaped and has a slot 18 at its bottom. A limit groove 17 is provided on the swing arm 4. A second pin 6 for limiting the swing arm 4 is fixedly sleeved inside the fixed base 3. The swing arm 4 is hinged to a hook 9 via a third pin 7. A lever 8 is fixed to the hook 9. A torsion spring 13 for resetting the hook 9 is installed on the third pin 7. A push-pull rod 14 is hinged to the swing arm 4 via a first pin 15. The push-pull rod 14 slides through the housing 1. A limit block 12 is fixed to the bottom end of the push-pull rod 14. A groove 19 with an arc-shaped cross-section is opened on the side of the limit block 12. Inside the housing 1, a guide seat 11 is fixed, and a limiting block 12 is slidably installed inside the guide seat 11. A spring 10 is connected between the inner wall of the housing 1 and the limiting block 12. The spring 10 is sleeved on the push-pull rod 14. Before connection, the lever 8 is pushed upward, and the lever 8 drives the hook 9 to move synchronously. The hook 9 is pulled out from the slot 18 at the bottom of the fixed seat 3. At this time, the lever 8 abuts against the swing arm 4 and pushes the swing arm 4 to rotate. The swing arm 4 contacts the top of the housing 1. Therefore, the swing arm 4 will rotate about the contact point with the top of the housing 1, thereby pulling the push-pull rod 14. At this time, the spring 10 contracts, the limiting block 12 moves upward, and then the ball groove 16 on the connecting plate 2 is sleeved on the... Figure 11 When the spherical part of the pendant is released, the stop block 8 is released, and the limit block 12 is reset by the restoring force of the spring 10, thereby controlling the movement of the pendant. Figure 11 The ball of the hanging component is limited to prevent it from sliding out of the ball groove 16. Under the action of the torsion spring 13, the hook 9 is re-hooked into the slot 18 at the bottom of the fixed base 3. At the same time, the second pin 6 prevents the swing arm 4 from continuing to rotate, thus avoiding the movement of the limiting block 12 and ensuring the stability of the installation. When it is necessary to disconnect, the lever 8 is pushed upward. The lever 8 drives the hook 9 to move synchronously. The hook 9 is pulled out from the slot 18 at the bottom of the fixed base 3. At this time, the lever 8 rests against the swing arm 4 and pushes the swing arm 4 to rotate. The swing arm 4 contacts the top of the housing 1. Therefore, the swing arm 4 will rotate around the contact point with the top of the housing 1, thereby pulling the push rod 14. At this time, the spring 10 contracts and the limiting block 12 moves upward, so that the ball of the hanging component can be pulled out from the ball groove 16 on the connecting plate 2. The operation is convenient and the connection is stable.

[0029] Working principle:

[0030] In use, before connection, push the lever 8 upwards. The lever 8 drives the hook 9 to move synchronously, and the hook 9 is pulled out from the slot 18 at the bottom of the fixed base 3. At this time, the lever 8 rests against the swing arm 4 and pushes the swing arm 4 to rotate. The swing arm 4 contacts the top of the housing 1. Therefore, the swing arm 4 will rotate around the contact point with the top of the housing 1, thereby pulling the push-pull rod 14. At this time, the spring 10 contracts, the limit block 12 moves upward, and then the ball groove 16 on the connecting plate 2 is fitted onto the... Figure 11When the spherical part of the pendant is released, the stop block 8 is released, and the limit block 12 is reset by the restoring force of the spring 10, thereby controlling the movement of the pendant. Figure 11 The ball of the hanging part is limited to prevent it from sliding out of the ball groove 16. Under the action of the torsion spring 13, the hook 9 is re-hung in the slot 18 at the bottom of the fixed base 3. At the same time, the second pin 6 can prevent the swing arm 4 from continuing to rotate, thereby avoiding the movement of the limit block 12 and ensuring the stability of the installation.

[0031] When it is necessary to disconnect, push the lever 8 upwards. The lever 8 drives the hook 9 to move synchronously. The hook 9 is pulled out from the slot 18 at the bottom of the fixed base 3. At this time, the lever 8 rests against the swing arm 4 and pushes the swing arm 4 to rotate. The swing arm 4 contacts the top of the housing 1. Therefore, the swing arm 4 will rotate around the contact point with the top of the housing 1, thereby pulling the push-pull rod 14. At this time, the spring 10 contracts and the limit block 12 moves upward, so that the ball of the hanging part can be pulled out from the ball groove 16 on the connecting plate 2. The operation is convenient and the connection is stable.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A convenient trailer towing device, comprising a housing (1) and a swing arm (4), characterized in that, One end of the housing (1) is fixed with a connecting plate (2), and the connecting plate (2) is provided with a ball groove (16). The top of the housing (1) is fixed with a fixing seat (3). A second pin (6) for limiting the swing arm (4) is fixedly sleeved in the fixing seat (3). The swing arm (4) is hinged to a hook (9) through a third pin (7). A torsion spring (13) for resetting the hook (9) is installed on the third pin (7). The swing arm (4) is hinged to a push-pull rod (14) through a first pin (15). The push-pull rod (14) slides through the housing (1). A limit block (12) is fixed at the bottom end of the push-pull rod (14). A spring (10) is connected between the inner wall of the housing (1) and the limit block (12). The spring (10) is sleeved on the push-pull rod (14).

2. The easy-to-operate trailer towing device according to claim 1, characterized in that, The fixing base (3) is C-shaped, and a slot (18) is provided at the bottom of the fixing base (3).

3. The easy-to-operate trailer towing device according to claim 1, characterized in that, A lever (8) is fixed on the hook (9).

4. The easy-to-operate trailer towing device according to claim 1, characterized in that, The housing (1) is fixed with a guide seat (11) inside, and the limiting block (12) is slidably installed inside the guide seat (11).

5. A convenient trailer towing device according to claim 1, characterized in that, The side of the limiting block (12) is provided with a groove (19) with an arc-shaped cross section.

6. The easy-to-operate trailer towing device according to claim 1, characterized in that, The swing arm (4) is provided with a limit groove (17).

7. A convenient trailer towing device according to claim 1, characterized in that, The side of the housing (1) has several bolt holes (5).

Images