A trailer device

Abstract

The utility model provides a trailer device, including main frame body, one end of main frame body is connected with the traction assembly that can go up and down activity, the other end fixed connection of main frame body has the tow tongue, the sliding connection of tow tongue has the backing pad, install the fastener that moves relative to main frame body on main frame body, fastener end portion can be butt joint with the backing pad end portion, the tow tongue can be inserted and is connected in the receiver of car end, and when the fastener is screwed, makes the one end of backing pad and the receiver butt joint, the other end with fastener end portion butt joint, to make the tow tongue and the receiver form stable locking state, the utility model discloses sets up movable backing pad structure on the tow tongue, and can after the tow tongue inserts the car receiver, utilizes fastener to fasten the backing pad, avoids the problem that the tow tongue shakes and makes the abnormal sound when assembling is completed and the vehicle moves, is favorable to improve the structure stability of tow tongue connecting portion.

Description

Technical Field

[0001] This utility model belongs to the field of trailer tools technology, and in particular relates to a trailer device. Background Technology

[0002] In the field of vehicle transportation, a trailer hitch is a connecting structure used to tow a vehicle, trailer, or equipment. One end is typically mounted at the rear of the vehicle, and the other end is connected to the towing mechanism of the towed vehicle via a ball joint. Trailer hitches can transfer traction and braking forces between vehicles, thus achieving towing functionality. There are many types of existing trailer hitches, commonly including fixed trailer frames, detachable trailer frames, and adjustable trailer structures.

[0003] However, existing trailer hitches still have several shortcomings in use. First, one end of the existing device needs to connect to a receiver at the rear of the vehicle. This receiver is generally a square tube structure. The trailer hitch inserts into the receiver via a tow hook and is then secured by a pin to prevent detachment. Since the insertion gap is unavoidable, it is prone to shaking and abnormal noise during vehicle movement or turning, affecting not only driving stability but also reducing user comfort. Second, most existing trailer hitch structures are fixed designs, unable to be adjusted for vehicle height differences or towing needs, resulting in poor versatility. Although some structures use a height-adjustable ball joint to achieve height adjustment, the traditional pin-based positioning method also suffers from large fitting gaps, significant shaking, and frequent abnormal noises, making it difficult to meet the requirements of high stability and low noise for towing. Utility Model Content

[0004] The purpose of this utility model is to provide a trailer device to solve the problems mentioned in the background art, such as shaking and abnormal noise after the trailer device is connected to the receiver at the rear of the vehicle, and the inability of the ball joint traction structure to flexibly adjust the height or poor stability after adjustment.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A trailer hitch includes a main frame, one end of which is connected to a vertically movable towing assembly, and the other end of which is fixedly connected to a trailing tongue. A pad is slidably connected to the trailing tongue. A fastener that moves relative to the main frame is installed on the main frame, the end of which can abut against the end of the pad. The trailing tongue can be inserted into and connected to a receiver at the vehicle end. When the fastener is tightened, one end of the pad abuts against the receiver and the other end abuts against the end of the fastener, so that a stable locking state is formed between the trailing tongue and the receiver.

[0007] Preferably, the fastener is a screw, which is threaded into the main frame; the pad includes a first pad and several second pads, wherein the first pad is located on the side close to the fastener and can contact the fastener.

[0008] Preferably, the first pad is a metal plate, and the second pad is a rubber plate or a silicone plate.

[0009] Preferably, the main frame includes a U-shaped frame, and adjustment holes are evenly provided on the two side plates of the U-shaped frame along its length. The traction component is slidably connected to the two side plates of the U-shaped frame and is locked to the U-shaped frame by locking pins.

[0010] Preferably, the traction assembly includes a lifting seat, one end of which extends between the two side plates of the U-shaped frame and the other end extends outward from the U-shaped frame, and ball joints are installed at both the upper and lower positions of the lifting seat.

[0011] Preferably, the lifting seat has an inner guard plate and an outer guard plate arranged sequentially from the inside to the outside on both sides. The inner guard plate is fixedly connected to the lifting seat, and the outer guard plate is fixedly connected to the inner guard plate. A gap is formed between the inner guard plate and the outer guard plate at one end near the U-shaped frame. The two side plates of the U-shaped frame extend into the gap. The inner guard plate and the outer guard plate have mounting holes that match the position of the adjustment hole. The locking pin can pass through the mounting hole and the adjustment hole, and after locking, it can reduce the gap between the outer guard plate and the inner guard plate, thereby fixing the traction component on the U-shaped frame.

[0012] Preferably, the locking pin includes a threaded rod, one end of which is provided with a square head and an end head from the inside out, the outline dimension of the square head being larger than that of the end head, and one of the mounting holes on the outer protective plate is a square hole that matches the square head; the other end of the threaded rod is threaded with a nut, and a radial insertion hole is provided at the end of the threaded rod, in which a pin is installed.

[0013] Preferably, the main frame further includes reinforcing ribs and fixing blocks. The reinforcing ribs are fixed to both sides of the back of the U-shaped frame, and the fixing blocks are fixed between the two reinforcing ribs. The surface of the fixing block is provided with a first through hole, and the U-shaped frame is provided with a second through hole coaxial with the first through hole. The inner wall of the first through hole or the second through hole is provided with internal threads, and the fasteners are connected to the fixing blocks or the U-shaped frame by means of threaded connection.

[0014] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0015] This invention features a movable pad structure on the tow tongue, which can be fastened with fasteners after the tow tongue is inserted into the car receiver, thus preventing the tow tongue from shaking and making abnormal noises during assembly and vehicle movement, and improving the structural stability of the tow tongue connection.

[0016] Based on the traditional pin structure, this utility model uses a nut connection to lock the threaded rod, avoiding abnormal noise and shaking problems that occur after the traction component is assembled, and further improving the stability of the entire trailer assembly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This is a cross-sectional view of the present invention;

[0021] Figure 4 This is a perspective view of the traction component of this utility model;

[0022] Figure 5 This is a perspective view of the main frame of this utility model;

[0023] Figure 6 This is a perspective view of the pin component of this utility model.

[0024] in:

[0025] 1. Main frame; 101. U-shaped frame; 102. Reinforcing rib; 103. Second through hole; 104. Fixing block; 105. First through hole; 106. Side plate; 107. Adjustment hole; 2. Lug tongue; 3. First pad; 4. Second pad; 5. Fastener; 6. Locking pin; 601. Threaded rod; 602. Square head; 603. End head; 604. Nut; 605. Pin; 7. Outer protective plate; 701. Square hole; 8. Inner protective plate; 9. Lifting seat; 10. Ball head seat. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-6 As shown, a trailer hitch includes a main frame 1. One end of the main frame 1 is connected to a traction component that can move up and down. The traction component is used to connect to and tow a towed vehicle or trailer. The other end of the main frame 1 is fixedly connected to a tow tongue 2, which is used to connect to the towing vehicle. Specifically, it is connected to a receiver at the rear end of the towing vehicle. A pad is slidably connected to the tow tongue 2. A fastener 5 that moves relative to the main frame 1 is installed on the main frame 1. The end of the fastener 5 can abut against the end of the pad. The tow tongue 2 can be inserted into and connected to the receiver at the vehicle end. When the fastener 5 is tightened, one end of the pad abuts against the receiver and the other end abuts against the end of the fastener 5, so that a stable locking state is formed between the tow tongue 2 and the receiver.

[0028] Specifically, the fastener 5 is a screw, which is threaded into the main frame 1; the pad includes a first pad 3 and several second pads 4, with the first pad 3 located near the fastener 5 and able to contact it. The pads are designed in multiple quantities, allowing for selection of different numbers according to actual needs, thus providing high flexibility.

[0029] More specifically, the first pad 3 is a metal plate, and the second pad 4 is a rubber or silicone plate. Since the first pad 3 needs to be in contact with the screw, using a metal plate structure can improve the bearing capacity, prevent deformation during the tightening process, and ensure uniform force transmission. The second pad 4, using a rubber or silicone plate structure, can form an elastic buffer between the trailer assembly and the vehicle receiver, absorbing vibration, reducing abnormal noise, and improving assembly stability and shock resistance.

[0030] Specifically, the main frame 1 includes a U-shaped frame 101. Adjustment holes 107 are evenly provided on the two side plates 106 of the U-shaped frame 101 along its length. The traction component is slidably connected to the two side plates 106 of the U-shaped frame 101 and is locked to the U-shaped frame 101 by locking pins 6. With this configuration, the installation position of the traction component can be adjusted by using the adjustment holes 107 on the two side plates 106 of the U-shaped frame 101, so that the traction component can be adjusted to different positions to meet the applicable needs of different vehicles, different heights, etc.

[0031] Specifically, the traction assembly includes a lifting seat 9, one end of which extends between the two side plates 106 of the U-shaped frame 101, and the other end extends outward from the U-shaped frame 101. Ball joint seats 10 are installed at both the upper and lower positions of the lifting seat 9. This arrangement allows the lifting seat 9 to be effectively supported between the two side plates 106 of the U-shaped frame 101, thereby improving structural stability. Simultaneously, the ball joint seats 10 at the upper and lower positions of the lifting seat 9 allow for selection of appropriate ball joints for traction connection according to the height requirements of different towed objects, achieving multi-height adaptation and significantly improving the flexibility and versatility of the device. Furthermore, the double ball joint structure optimizes the traction force transmission path, reduces localized force concentration, and ensures stability and safety during towing.

[0032] Specifically, the lifting seat 9 has an inner protective plate 8 and an outer protective plate 7 arranged sequentially from the inside to the outside on both sides. The inner protective plate 8 is fixedly connected to the lifting seat 9, and the outer protective plate 7 is fixedly connected to the inner protective plate 8. Specifically, the fixing is carried out by welding in sequence, or in other embodiments, the connection can be carried out by bolt connection. Furthermore, a gap is formed between the inner protective plate 8 and the outer protective plate 7 at one end near the U-shaped frame 101. The two side plates 106 of the U-shaped frame 101 extend into this gap, meaning that the outer protective plate 7 is located entirely on the outside of the U-shaped frame 101, while the inner protective plate 8 and the lifting seat 9 are located inside the U-shaped frame 101. This creates a clamping and limiting fit between the entire traction assembly and the U-shaped frame 101. The side plates 106 of the U-shaped frame 101 are restricted between the inner protective plate 8 and the outer protective plate 7, which can guide and prevent swaying of the lifting seat 9 during lifting and lowering, effectively reducing the lateral displacement and vibration of the traction assembly under traction load. At the same time, the inner protective plate 8 and the outer protective plate 7 also improve the lateral load-bearing capacity and deformation resistance of the lifting seat 9, maintaining the stable posture of the traction ball head when the vehicle is turning or driving on a slope.

[0033] The inner protective plate 8 and the outer protective plate 7 have mounting holes that match the position of the adjustment hole 107. The locking pin 6 can pass through the mounting hole and the adjustment hole 107, and after locking, it can reduce the gap between the outer protective plate 7 and the inner protective plate 8, thereby fixing the traction assembly to the U-shaped frame 101. That is, because the inner protective plate 8 and the outer protective plate 7 form a gap at the end position, after the locking pin 6 is locked, the inner protective plate 8 and the outer protective plate 7 can form a clamping state at the end position, further improving the stability of the overall connection structure of the traction assembly and the reliability during operation.

[0034] Specifically, the locking pin 6 includes a threaded rod 601. One end of the threaded rod 601 has a square head 602 and an end head 603 arranged sequentially from the inside to the outside. The outline dimension of the square head 602 is larger than that of the other end head 602. One of the mounting holes on the outer protective plate 7 is a square hole 701, which is matched with the square head 602. The other end of the threaded rod 601 is threadedly connected to a nut 604, and a radial insertion hole is provided at the end of the threaded rod 601, in which a pin 605 is installed. In this example, the outlines of the square hole 701 and the square head 602 are rectangular. It is understood that in other embodiments, other regular polygonal structures or irregular structures can also be used. This is mainly used to prevent the threaded rod 601 from rotating during the locking of the nut 604, providing a reliable anti-rotation limiting effect and facilitating operation. In this example, the traction assembly is fastened by connecting the threaded rod 601 and the nut 604. Furthermore, a pin 605 is provided at the end of the threaded rod 601 to prevent the nut 604 from falling off due to vibration during vehicle operation, thus preventing the traction assembly from detaching from the main frame 1 and improving safety.

[0035] Specifically, the main frame 1 also includes reinforcing ribs 102 and fixing blocks 104. The reinforcing ribs 102 are fixed to the two sides of the back of the U-shaped frame 101, and the fixing blocks 104 are fixed between the two reinforcing ribs 102. The surface of the fixing blocks 104 is provided with a first through hole 105, and the U-shaped frame 101 is provided with a second through hole 103 coaxial with the first through hole 105. The inner wall of the first through hole 105 or the second through hole 103 is provided with internal threads. The fasteners 5 are connected to the fixing blocks 104 or the U-shaped frame 101 by means of threaded connection. The drag tongue 2 is welded to the main frame 1 by welding, specifically welded to the back of the U-shaped frame 101, and simultaneously welded to two reinforcing ribs 102, which can improve the connection firmness of the drag tongue 2 to the main frame 1. The fastener 5 is preferably threaded and connected in the first through hole 105. In actual operation, the fastener 5 can be rotated by operating a wrench, thereby achieving the purpose of moving relative to the main frame 1, and then abutting against the first metal pad 3.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A trailer assembly, characterized in that, The system includes a main frame (1), one end of which is connected to a traction component that can move up and down, and the other end of which is fixedly connected to a drag tongue (2). A pad is slidably connected to the drag tongue (2). A fastener (5) that moves relative to the main frame (1) is installed on the main frame (1). The end of the fastener (5) can abut against the end of the pad. The drag tongue (2) can be inserted into and connected to a receiver at the end of the vehicle. When the fastener (5) is tightened, one end of the pad abuts against the receiver and the other end abuts against the end of the fastener (5), so that a stable locking state is formed between the drag tongue (2) and the receiver.

2. A trailer assembly according to claim 1, characterized in that: The fastener (5) is a screw, which is threaded into the main frame (1); the pad includes a first pad (3) and several second pads (4), the first pad (3) is located on the side close to the fastener (5) and can contact the fastener (5).

3. A trailer assembly according to claim 2, characterized in that: The first pad (3) is a metal plate, and the second pad (4) is a rubber plate or a silicone plate.

4. A trailer assembly according to claim 1, characterized in that: The main frame (1) includes a U-shaped frame (101). Adjustment holes (107) are evenly provided on the two side plates (106) of the U-shaped frame (101) along its length direction. The traction component is slidably connected to the two side plates (106) of the U-shaped frame (101) and is locked to the U-shaped frame (101) by a locking pin (6).

5. A trailer assembly according to claim 4, characterized in that: The traction assembly includes a lifting seat (9), one end of which extends between the two side plates (106) of the U-shaped frame (101), and the other end extends outward from the U-shaped frame (101). Ball head seats (10) are installed at both the upper and lower positions of the lifting seat (9).

6. A trailer assembly according to claim 5, characterized in that: The lifting seat (9) has an inner guard plate (8) and an outer guard plate (7) arranged sequentially from the inside to the outside on both sides. The inner guard plate (8) is fixedly connected to the lifting seat (9), and the outer guard plate (7) is fixedly connected to the inner guard plate (8). A gap is formed between the inner guard plate (8) and the outer guard plate (7) at one end near the U-shaped frame (101). The two side plates (106) of the U-shaped frame (101) extend into the gap. The inner guard plate (8) and the outer guard plate (7) have mounting holes that match the position of the adjustment hole (107). The locking pin (6) can pass through the mounting hole and the adjustment hole (107) and can reduce the gap between the outer guard plate (7) and the inner guard plate (8) after locking, thereby fixing the traction component on the U-shaped frame (101).

7. A trailer assembly according to claim 6, characterized in that: The locking pin (6) includes a threaded rod (601). One end of the threaded rod (601) is provided with a square head (602) and an end head (603) from the inside out. The outline size of the square head (602) is larger than that of the square head (602). One of the mounting holes on the outer protective plate (7) is a square hole (701), which is matched with the square head (602). The other end of the threaded rod (601) is threaded with a nut (604), and a radial insertion hole is provided at the end of the threaded rod (601), in which a pin (605) is installed.

8. A trailer assembly according to claim 4, characterized in that: The main frame (1) also includes reinforcing ribs (102) and fixing blocks (104). The reinforcing ribs (102) are fixed on both sides of the back of the U-shaped frame (101). The fixing blocks (104) are fixed between the two reinforcing ribs (102). The surface of the fixing blocks (104) is provided with a first through hole (105). The U-shaped frame (101) is provided with a second through hole (103) coaxial with the first through hole (105). The inner wall of the first through hole (105) or the second through hole (103) is provided with internal threads. The fasteners (5) are connected to the fixing blocks (104) or the U-shaped frame (101) by means of threaded connection.

Images