Trailer frame connector

Abstract

A trailer frame connector comprising a main body (9) and a ball head support block (13) arranged thereon, characterized in that the ball head support block (13) has a through end and a fixed end, wherein the joint ball head (12) passes through the through end to fit at the fixed end such that the joint ball head (12) is connected to the main body (9), further comprising a ball head pressure plate (11) and a movement mechanism, wherein the ball head pressure plate (11) is arranged adjacent to the through end and obliquely to bring the joint ball head (12) into upper contact with the fixed end, wherein a force is exerted on the joint ball head (12) simultaneously in a first direction and a second direction by the ball head pressure plate (11), wherein the ball head pressure plate (11) is connected to the movement structure.

Description

Technical area

[0001] The present utility model relates to the technical field of automotive accessories, in particular to a trailer frame connector. State of the art

[0002] This product is primarily a joint device for the trailer frame and trailer ball. The locking ball heads of many similar products generally have horizontal left-right locking mechanisms or vertical up-down locking mechanisms. When locking in one direction, it is easy to loosen in the other direction, so the locking effect is not ideal, and the locking link is easy to loosen, causing safety risks. Contents of this utility model

[0003] The purpose of the present utility model is to provide a trailer frame connector so that problems such as the locking effect is not ideal and the locking link is easy to release, which causes safety risks.

[0004] To achieve the above-mentioned purpose, the solution according to the present utility model consists in a trailer frame connector having a main body and a ball head support block arranged thereon, the ball head support block having a through end and a fixed end, wherein the joint ball head passes through the through end to fit at the fixed end so that the joint ball head is connected to the main body, further comprising a ball head pressure plate and a moving mechanism, wherein the ball head pressure plate is adjacent to the through end and obliquely arranged to bring the joint ball head into upper contact with the fixed end, wherein a force is exerted on the joint ball head simultaneously in a first direction and a second direction by the ball head pressure plate, wherein the ball head pressure plate is connected to the moving structure.

[0005] In this solution, the ball head pressure plate is driven by the movement of the moving mechanism to press on the joint ball head. The pressure is applied in two directions, namely the first direction being vertical and the second direction being horizontal. The locking force is applied simultaneously in both the vertical and horizontal directions, so that the joint ball heads are tightly locked and not easily loosened, thereby greatly improving the stability of the joint device and reducing safety risks.

[0006] Preferably, the ball head pressure plate is arranged in an articulated manner on the main body above the fixed end, wherein the ball head pressure plate is also articulated to the movement structure on the left side of the fixed end.

[0007] In this solution, the ball head pressure plate is hinged with the main body, so that the ball head pressure plate can be changed in angle along the main body without moving the specific position in sequence, making the connection more stable.

[0008] Preferably, the movement structure comprises a handle and a linkage assembly, wherein the upper part of the main body is provided with a first installation plate and a second installation plate, wherein the first installation plate is arranged on one side of the second installation plate, wherein the handle is arranged between the first installation plate and the second installation plate, wherein the handle is rotatably connected to the first installation plate and the second installation plate via a first rotary shaft, wherein the underside of the handle is connected to the ball head pressure plate by the linkage assembly.

[0009] In this solution, the linkage mechanism is driven by arranging the handle to drive the ball head pressure plate synchronously with the pressing or releasing of the joint ball head, making the opening or locking of the ball head pressure plate easier and more labor-saving.

[0010] Preferably, it is further provided that the linkage arrangement comprises a first connecting element and a second connecting element, wherein the underside of the handle is connected to the first connecting element via a second rotary shaft, wherein the first connecting element is connected to the second connecting element, wherein the second connecting element is articulated to the ball head pressure plate via a third rotary shaft.

[0011] Preferably, it is further provided that the first connecting element is connected to the second connecting element via a double-headed adjusting bolt.

[0012] In this solution, the first connecting element, the second connecting element and the double-headed adjusting bolt are arranged so that the locking force of the ball head pressure plate can be better adjusted, thereby better pressing or releasing the joint ball head.

[0013] Preferably, it is further provided that the grip portion of the handle is provided with a lock for locking and fixing the handle.

[0014] In this solution, the arrangement of the lock allows the position of the handle to be locked when the joint ball head is pressed by the ball head pressure plate, without the ball head pressure plate being destroyed by touching the handle for pressing the joint ball head.

[0015] Preferably, a limit pin is arranged at the front end of the body portion of the handle, the limit pin being connected to a side wall of the main body to limit the rotation of the handle.

[0016] In this solution, the limit pin is arranged to control the locking position of the handle.

[0017] Preferably, the ball head support block is a U-shaped groove, the open end of which is designed as a through end and the end of which is designed as a fixed end.

[0018] Preferably, it is further provided that a fastening shaft is arranged between the first installation plate and the main body, wherein a fastening hole is arranged on the ball head pressure plate, wherein a tension spring is arranged between the fastening shaft and the fastening hole, wherein the head of the tension spring is connected to the fastening shaft, wherein the end is hooked onto the fastening hole of the ball head pressure plate.

[0019] In this solution, the tension spring is arranged so that when the grip section of the handle is pulled, the ball head pressure plate can be opened and the tensile force exerted on the grip section of the handle can be released again, so that the ball head pressure plate is pressed against the joint ball head again by the tension spring.

[0020] Preferably, a guide plate is fixed at a certain angle in the main body.

[0021] The guide plate is arranged so that damage to the ball head pressure plate caused by an excessive pulling angle of the handle can be better limited. Short description of the drawing Fig. 1 is a schematic diagram showing the structure of a trailer frame connector according to the present utility model when locked; Fig. 2 is a schematic diagram of the structure of a trailer frame connector according to the present utility model when opened; Fig. 3 is a schematic diagram of the three-dimensional structure of a trailer frame connector according to the present utility model when locking.

[0022] Reference numerals: 1. Handle; 2. First rotating shaft; 3. Limit pin; 4. Second rotating shaft; 5. First connecting member; 6. Double-headed adjusting bolt; 7. Second connecting member; 8. Third rotating shaft; 9. Main body; 10. Fourth rotating shaft; 11. Ball head pressure plate; 12. Joint ball head; 13. Ball head support block; 14. Lock; 15. First installation plate; 16. Second installation plate; 17. Guide plate; 18. Tension spring; 19. Fixing shaft; 20. Fixing hole. Detailed embodiments

[0023] In order to better understand the present utility model and to more clearly define the scope of protection claimed by the present utility model, the present utility model will be described in detail below according to certain specific embodiments of the present utility model. It should be noted that the following are only some specific embodiments of the concept of the present utility model and are only a part of the embodiments of the present utility model. The specific and direct description of the related structure is only to facilitate the understanding of the present utility model, and each specific feature is not naturally and directly used to limit the scope of implementation of the present utility model.Routine selections and substitutions made by the skilled person under the guidance of the spirit of the present utility model are considered to be within the scope of protection claimed by the present utility model.

[0024] Trailer frame connector with a main body 9 and a ball head support block 13 arranged thereon, wherein the ball head support block 13 has a through end and a fixed end, wherein the joint ball head 12 passes through the through end to fit at the fixed end, so that the joint ball head 12 is connected to the main body 9, further comprising a ball head pressure plate 11 and a movement mechanism, wherein the ball head pressure plate 11 is arranged adjacent to the through end and obliquely to bring the joint ball head 12 into upper contact with the fixed end, wherein a force is exerted on the joint ball head 12 simultaneously in a first direction and a second direction by the ball head pressure plate 11, wherein the ball head pressure plate 11 is connected to the movement structure.

[0025] In the present embodiment, the ball head support block 13 is a U-shaped groove whose open end is formed as a through end and whose end is formed as a fixed end, wherein the joint ball head 12 passes through the through end and is supported on the fixed end, wherein the connection point of the fixed end is circular in cross section to cooperate with the shape of the joint ball head 12, wherein the main body 9 is a housing and the center of the main body 9 is hollowed out for placing parts, wherein the ball head support block 13 is welded integrally to the main body 9. The ball head pressure plate 11 is driven by the movement of the moving mechanism to press the joint ball head 12, and the pressure is exerted in two directions by the first direction and the second direction, wherein the first direction is a vertical direction and the second direction is a horizontal direction.

[0026] The locking force is applied simultaneously in the vertical and horizontal directions, so that the joint ball heads 12 are locked in close connection, which is not easy to loosen, thereby greatly improving the stability of the joint device and reducing safety risks.

[0027] As a preferred embodiment, it is further provided that the ball head pressure plate 11 is arranged above the fixed end in an articulated manner on the main body 9, wherein the ball head pressure plate 11 is also articulated to the movement structure on the left side of the fixed end. In the present exemplary embodiment, it is provided that the ball head pressure plate 11 is arranged at the top left of the ball head support block 13, wherein the ball head pressure plate 11 is connected to the main body 9 via a fourth rotary shaft 10, wherein the connection point is located above the ball head support block 13, wherein the point at which the ball head pressure plate 11 is connected to the movement structure is located at the top left in the ball head support block 13, as in Fig.1. The ball head pressure plate 11 is hinged to the main body 9, so that the ball head pressure plate 11 can be changed in angle along the main body 9 without moving the specific position in consequence, thereby making the connection more stable.

[0028] As a preferred embodiment, it is further provided that the movement structure comprises a handle 1 and a linkage arrangement, wherein the upper part of the main body 9 is provided with a first installation plate 15 and a second installation plate 16, wherein the first installation plate 15 is arranged on one side of the second installation plate 16, wherein the handle 1 is arranged between the first installation plate 15 and the second installation plate 16, wherein the handle 1 is rotatably connected to the first installation plate 15 and the second installation plate 16 via a first rotary shaft 2, wherein the underside of the handle 1 is connected to the ball head pressure plate 11 by the linkage arrangement, wherein the linkage arrangement comprises a first connecting element 5 and a second connecting element 7, wherein the underside of the handle 1 is connected to the first connecting element 5 via a second rotary shaft 4,wherein the first connecting element 5 is connected to the second connecting element 7, wherein the second connecting element 7 is articulated to the ball head pressure plate 11 via a third rotary shaft 8, wherein the first connecting element 5 is connected to the second connecting element 7 via a double-headed adjusting bolt 6.,

[0029] In the present embodiment, it is provided that the first rotary shaft 2 passes through the first installation plate 15 or the second installation plate 16 in order to be connected again in a rotating manner to the main body 9, wherein the handle 1 is fastened to the main body 9 by means of a first rotary shaft 2, wherein the handle 1 is connected to the first connecting element 5 via a second rotary shaft 4, wherein the second connecting element 7 is connected to the ball head pressure plate 11 via a third rotary shaft 8, wherein the first connecting element 5 is connected to the second connecting element 7 via a double-headed adjusting bolt 6 and is assembled in one piece so that the distance between the second rotary shaft 4 and the third rotary shaft 8 can be adjusted, wherein two first ear plates are arranged at an end of the ball head pressure plate 11 facing away from the ball head support block 13, wherein a third rotary shaft 8 is connected between the first ear plates,The second link 7 is sheathed on the third rotary shaft 8, and the third rotary shaft 8 is located at the top left of the ball head support block 13. The linkage mechanism is driven by the arrangement of the handle 1 to drive the ball head pressure plate 11 synchronously with the pressing or releasing of the joint ball head 12, thereby making the opening or locking of the ball head pressure plate 11 easier and more labor-saving. The first link 5, the second link 7, and the double-headed adjusting bolt 6 are arranged so that the locking force of the ball head pressure plate 11 can be better adjusted, thereby better pressing or releasing the joint ball head 12.

[0030] As a preferred embodiment, it is further provided that a fastening shaft 19 is arranged between the first installation plate 15 and the main body 9, wherein a fastening hole 20 is arranged on the ball head pressure plate 11, wherein a tension spring 18 is arranged between the fastening shaft 19 and the fastening hole 20, wherein the head of the tension spring 18 is connected to the fastening shaft 19, wherein the end is hooked onto the fastening hole 20 of the ball head pressure plate 11, wherein a guide plate 17 is fastened at a certain angle in the main body 9. In the present exemplary embodiment, it is provided that in the first installation plate 15 orthe second installation plate 16 each have through holes arranged therein, the fastening shaft 19 passing through the two through holes and being located outside the side facing away from the first installation plate 15 and the second installation plate 16, the outwardly emerging section of the fastening shaft 19 also passing through the main body 9, two second ear plates being arranged in the width direction of the ball head pressure plate 11 on a side of the ball head pressure plate 11 adjacent to the first connecting element 5, a fastening hole 20 being arranged on each second ear plate, a gap being formed between each fastening hole 20 and the side facing away from the first connecting plate ora tension spring 18 is arranged on each fastening shaft 19 emerging from the second connecting plate, wherein the guide plate 17 is inclined in the same direction as the ball head pressure plate 11 when the handle section of the handle 1 is not opened.

[0031] The tension spring 18 is arranged so that when the grip portion of the handle 1 is pulled, the ball head pressure plate 11 can be opened and the tensile force exerted on the grip portion of the handle 1 can be released again, so that the ball head pressure plate 11 is pressed against the joint ball head 12 again by the tension spring 18. The guide plate 17 is arranged so that damage to the ball head pressure plate 11 caused by an excessively large pulling angle of the handle 1 can be better limited.

[0032] As a preferred embodiment, it is further provided that the grip portion of the handle 1 is provided with a lock 14 for locking and fixing the handle 1. A limit pin 3 is arranged at the front end of the body portion of the handle 1, the limit pin 3 being connected to a side wall of the main body 9 to limit the rotation of the handle 1. In the present embodiment, the lock 14 is attached to the grip portion so that the handle can be locked in a fixed position when the joint ball head 12 is locked to prevent accidental opening. Finally, by rotating the grip portion, the ball head pressure plate 11 is controlled to lock the function of the joint ball head 12. A perforation is arranged on the second installation plate 16 so that the core of the lock 14 is passed through the perforation.The handle 1 is locked when the core passes through the perforation, so that the handle 1 cannot move. The handle 1 is freely movable when the core is not inserted into the perforation.

[0033] The arrangement of the lock 14 allows the position of the handle 1 to be locked when the joint ball head 12 is pressed by the ball head pressure plate 11, without the ball head pressure plate 11 being destroyed by the contact of the handle 1 to press the joint ball head 12. The limit pin 3 is arranged to control the locking position of the handle 1. This product mainly uses an oblique direction locking mechanism. The locking force is applied simultaneously in the vertical and horizontal directions, so that the joint ball heads 12 are locked in a tight connection, which is not easy to loosen, thereby greatly improving the stability of the joint device and reducing safety risks. The limit pin 3 is used to control the locking position of the handle 1.The locking force of the pressure plate can be adjusted via these three folding pieces, for example, the first connecting element 5, the second connecting element 7, and the double-headed adjusting bolt 6. The above are only preferred embodiments of the present utility model. It should be noted that a person of ordinary skill in the art can also make numerous improvements and modifications without deviating from the technical principles of the present utility model. These improvements and modifications are also to be considered within the scope of protection of the present utility model.

Claims

[1] Trailer frame connector with a main body (9) and a ball head support block (13) arranged thereon, characterized by in that the ball head support block (13) has a through end and a fixed end, wherein the joint ball head (12) passes through the through end to fit at the fixed end so that the joint ball head (12) is connected to the main body (9), further comprising a ball head pressure plate (11) and a movement mechanism, wherein the ball head pressure plate (11) is adjacent to the through end and obliquely arranged to bring the joint ball head (12) into upper contact with the fixed end, wherein a force is exerted on the joint ball head (12) simultaneously in a first direction and a second direction by the ball head pressure plate (11), wherein the ball head pressure plate (11) is connected to the movement structure. [2] Trailer frame connector according to claim 1, characterized bythat the ball head pressure plate (11) is arranged above the fixed end in an articulated manner on the main body (9), wherein the ball head pressure plate (11) is also articulated to the movement structure on the left side of the fixed end. [3] Trailer frame connector according to claim 1 or 2, characterized byin that the movement structure comprises a handle (1) and a linkage arrangement, wherein the upper part of the main body (9) is provided with a first installation plate (15) and a second installation plate (16), wherein the first installation plate (15) is arranged on one side of the second installation plate (16), wherein the handle (1) is arranged between the first installation plate (15) and the second installation plate (16), wherein the handle (1) is rotatably connected to the first installation plate (15) and the second installation plate (16) via a first rotary shaft (2), wherein the underside of the handle (1) is connected to the ball head pressure plate (11) by the linkage arrangement. [4] Trailer frame connector according to claim 3, characterized byin that the linkage arrangement comprises a first connecting element (5) and a second connecting element (7), wherein the underside of the handle (1) is connected to the first connecting element (5) via a second rotary shaft (4), wherein the first connecting element (5) is connected to the second connecting element (7), wherein the second connecting element (7) is articulated to the ball head pressure plate (11) via a third rotary shaft (8). [5] Trailer frame connector according to claim 4, characterized by that the first connecting element (5) is connected to the second connecting element (7) via a double-headed adjusting bolt (6). [6] Trailer frame connector according to one of claims 3 to 5, characterized by that the grip portion of the handle (1) is provided with a lock (14) for locking and fixing the handle (1). [7] Trailer frame connector according to claim 1, characterized bythat a limit pin (3) is arranged at the front end of the body portion of the handle (1), wherein the limit pin (3) is connected to a side wall of the main body (9) in order to limit the rotation of the handle (1). [8] Trailer frame connector according to claim 1, characterized by that the ball head support block (13) is a U-shaped groove, the open end of which is designed as a through end and the end of which is designed as a fixed end. [9] Trailer frame connector according to claim 3, characterized bythat a fastening shaft (19) is arranged between the first installation plate (15) and the main body (9), wherein a fastening bore (20) is arranged on the ball head pressure plate (11), wherein a tension spring (18) is arranged between the fastening shaft (19) and the fastening bore (20), wherein the head of the tension spring (18) is connected to the fastening shaft (19), wherein the end is hooked onto the fastening bore (20) of the ball head pressure plate (11). [10] Trailer frame connector according to claim 1, characterized by that a guide plate (17) is fixed at a certain angle in the main body (9).

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