Ball hitch connector

Abstract

The utility model relates to vehicle auxiliary technical field, especially a ball head trailer connector, including connecting seat and ball seat, connecting seat is seted up with rotary connection groove, one side of ball seat is provided with rotary connection part, and rotary connection part can be worn in rotary connection groove and can make relative rotation between rotary connection groove, the inner wall of rotary connection groove is seted up with first limit slot, the outer wall of rotary connection part is seted up with second limit slot, and first limit slot and second limit slot correspond mutually and form first limit passageway, a plurality of first limit pieces are arranged in first limit passageway, and first limit piece part is located in first limit slot, another part is located in second limit slot, to be used for limiting rotary connection part and rotary connection groove and each other and separating, the utility model has the advantages of realizing relative rotation through rotary connection groove and rotary connection part between connecting seat and ball seat, so that the ball head can rotate when connecting trailer, and then match with trailer, to be convenient for connecting.

Description

Technical Field

[0001] This utility model relates to the field of vehicle auxiliary technology, and in particular to a ball-joint trailer connector. Background Technology

[0002] As people's living standards improve, more and more families own their own cars, and due to their own needs, more and more people choose to tow a trailer, such as a caravan, behind their tractor. There are many types of ball joint trailers available, most of which connect the vehicle directly to the ball joint body and then connect the trailer to the ball joint. However, this method requires frequent disassembly and assembly of the ball joint body, which reduces the lifespan of the ball joint connector and makes disassembly and assembly very inconvenient. Moreover, the ball joint body is a one-piece structure, which results in poor compatibility with the trailer and inconvenience in adjustment. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model proposes a ball-head trailer connector that rotates the ball head to match the trailer.

[0004] This utility model is achieved through the following technical solution.

[0005] A ball joint trailer connector includes a connector base and a ball seat. The connector base has a rotating connection groove, and the ball seat has a rotating connection part on one side. The rotating connection part can be inserted into the rotating connection groove and can rotate relative to the rotating connection groove. The inner wall of the rotating connection groove has a first limiting groove, and the outer wall of the rotating connection part has a second limiting groove. The first limiting groove and the second limiting groove cooperate with each other to form a first limiting channel. A plurality of first limiting members are provided in the first limiting channel. Part of the first limiting member is located in the first limiting groove, and another part is located in the second limiting groove, so as to prevent the rotating connection part from disengaging from the rotating connection groove.

[0006] As a further improvement of this utility model, the first limiting member is a ball bearing, and the side wall of the connecting seat is provided with a first mounting hole that communicates with the first limiting channel. The first mounting hole is used for the ball bearing to enter.

[0007] As a further improvement of this utility model, a first plug is provided on the first mounting hole.

[0008] As a further improvement of this utility model, the connecting seat is provided with a first limiting pin, which passes radially through the rotating connecting groove and through the rotating connecting part to limit the relative rotation between the rotating connecting part and the rotating connecting groove.

[0009] As a further improvement of this utility model, a support rod is provided on the connecting seat, and a connecting rod is provided at the upper end of the support rod. The connecting rod is perpendicular to the support rod and is used to connect the vehicle.

[0010] As a further improvement of this utility model, a rotating connecting hole is provided at one end of the connecting rod along its radial direction, the upper end of the support rod passes through the rotating connecting hole, a third limiting groove is provided on the inner wall of the rotating connecting hole, and a fourth limiting groove is provided at the upper end of the support rod. The third limiting groove and the fourth limiting groove cooperate with each other to form a second limiting channel. A plurality of second limiting members are provided in the second limiting channel. Part of the second limiting member is located in the third limiting groove and another part is located in the fourth limiting groove, so as to restrict the connecting rod from detaching from the support rod.

[0011] As a further improvement of this utility model, the second limiting member is a ball bearing, and the side wall of the connecting rod is provided with a second mounting hole that communicates with the second limiting channel. The second mounting hole is used for the ball bearing to enter.

[0012] As a further improvement of this utility model, a second plug is provided on the second mounting hole.

[0013] As a further improvement of this utility model, a second limiting pin is provided on the connecting rod. The second limiting pin passes radially through the connecting rod and the support rod along the rotating connecting hole to limit the relative rotation of the connecting rod and the support rod.

[0014] As a further improvement of this utility model, a second connecting hole is provided on one side of the connecting seat, the support rod passes through the second connecting hole vertically, and a third limiting pin is provided on the connecting rod. The third limiting pin passes through the connecting seat and the support rod radially along the second connecting hole.

[0015] The beneficial effects of this utility model are as follows: In this utility model patent, the connecting seat and the ball seat achieve relative rotation through the rotating connecting groove and the rotating connecting part, so that the ball head can rotate when connecting to the trailer, thereby matching with the trailer for easy connection; at the same time, the first limiting channel formed by the cooperation of the first limiting groove and the second limiting groove, as well as the embedded first limiting member (ball), ensure the rotation function while effectively preventing the rotating connecting part from accidentally disengaging from the rotating connecting groove, ensuring a firm and reliable connection and preventing accidental disengagement during driving; in addition, in this embodiment, since the connecting seat and the ball seat can be disassembled, they can be maintained or replaced independently. If the ball seat (which is frequently exposed and used) is worn or damaged, only the ball seat part needs to be replaced, without replacing the entire connector (including the connecting seat fixed on the vehicle), thereby reducing maintenance costs. Attached Figure Description

[0016] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein: Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is an exploded view of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the ball seat structure in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the connecting seat structure in an embodiment of this utility model; Figure 5 This is a schematic diagram of the connecting rod structure in an embodiment of this utility model.

[0017] The following are the numbered components in the diagram: Connecting seat 1, Rotary connecting groove 101, First limiting groove 102, First mounting hole 103, Second connecting hole 104, Ball head 105, Ball seat 2, Rotary connecting part 201, Second limiting groove 202, First limiting component 3, First plug 4, First limiting pin 5, Support rod 6, Fourth limiting groove 601, Connecting rod 7, Rotary connecting hole 701, Third limiting groove 702, Second limiting component 8, Second mounting hole 9, Second plug 10, Second limiting pin 11, Third limiting pin 12. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0020] refer to Figures 1 to 5 The present utility model embodiment discloses that: A ball joint trailer connector includes a connecting seat 1 and a ball seat 2. The ball seat 2 has three ball heads 105 for connecting to a trailer. The connecting seat 1 has a rotating connecting groove 101, and the ball seat 2 has a rotating connecting part 201 on one side. The rotating connecting part 201 can pass into the rotating connecting groove 101 and can rotate relative to it. The connecting seat 1 and the ball seat 2 achieve relative rotation through the rotating connecting groove 101 and the rotating connecting part 201. This allows the ball heads 105 to rotate relative to the trailer when connecting, thus matching with the trailer for easy connection. The inner wall of the rotating connecting groove 101 has a first limiting groove 102, and the outer wall of the rotating connecting part 201 has a second limiting groove 202. The first limiting groove 102 and the second limiting groove 202 correspond to each other to form a first limiting channel. A first limiting channel is provided within the first limiting channel. A plurality of first limiting members 3, part of which is located in the first limiting groove 102 and another part is located in the second limiting groove 202, are used to restrict the rotational connection part 201 from disengaging from the rotational connection groove 101. The first limiting channel formed by the cooperation of the first limiting groove 102 and the second limiting groove 202, and the embedded first limiting member 3 (ball), can effectively restrict the rotational connection part 201 from accidentally disengaging from the rotational connection groove 101 while ensuring the rotational function, ensuring the connection state is firm and reliable, and preventing accidental disengagement during driving. In addition, in this embodiment, since the connecting seat 1 and the ball seat 2 can be disassembled from each other, they can be maintained or replaced independently. If the ball seat 2 (which is frequently exposed and used) is worn or damaged, only the ball seat 2 part needs to be replaced, without replacing the entire connector (including the connecting seat 1 fixed on the vehicle), thereby reducing maintenance costs.

[0021] The first limiting member 3 is a ball bearing. The side wall of the connecting seat 1 has a first mounting hole 103 that communicates with the first limiting channel. The first mounting hole 103 is used for the ball bearing to enter. The ball bearing is directly embedded into the first limiting channel through the first mounting hole 103. Installation or replacement can be completed without complicated disassembly. The spherical surface of the ball bearing contacts the first limiting groove 102 and the second limiting groove 202 with rolling friction, which significantly reduces the friction during rotation. This makes the relative rotation between the ball seat 2 and the connecting seat 1 smoother. At the same time, it ensures that the limiting function does not fail after severe vibration or impact during vehicle movement, and the anti-detachment reliability is higher.

[0022] A first plug 4 is provided on the first mounting hole 103. In this embodiment, the first mounting hole 103 is designed as a threaded hole, and the first plug 4 is a threaded plug. The two are used in conjunction with the thread. The first plug 4 is installed after the ball is installed, thereby preventing the ball from falling out of the first mounting hole 103. In addition, since the first plug 4 can seal the first mounting hole 103, it can also prevent external pollutants such as mud and rainwater from entering the first limiting channel. This not only prevents the ball from getting stuck and failing due to dirt accumulation, but also avoids the ball from being corroded.

[0023] The connecting seat 1 is provided with a first limiting pin 5, which passes radially through the rotating connecting groove 101 and through the rotating connecting part 201 to restrict relative rotation between the rotating connecting part 201 and the rotating connecting groove 101. A locking buckle is also provided at the end through which the pin passes. Specifically, the side wall of the rotating connecting part 201 has a pin hole along its radial direction. The first limiting pin 5 passes through this pin hole. During driving, the first limiting pin 5 is controlled to pass through the rotating connecting groove 101 and the rotating connecting part 201, restricting their relative rotation. Simultaneously, the first limiting pin 5 shares the force carried by the ball bearings during towing, preventing the ball bearings from deforming and failing due to overload when towing the vehicle, thus improving reliability.

[0024] The connecting seat 1 is provided with a support rod 6, which is cylindrical. A connecting rod 7 is provided at the upper end of the support rod 6, and the connecting rod 7 is perpendicular to the support rod 6. The connecting rod 7 is used to connect the vehicle. In this embodiment, a second connecting hole 104 is provided on one side of the connecting seat 1. The support rod 6 passes through the second connecting hole 104 vertically. A third limiting pin 12 is provided on the connecting rod 7. The third limiting pin 12 passes radially through the connecting seat 1 and the support rod 6 along the second connecting hole 104, so that the connecting seat 1 and the support rod 6 are detachably connected and connected by the third limiting pin 12, which is convenient for disassembly and assembly. In addition, in this embodiment, a plurality of mounting holes are evenly provided along the length of the support rod 6. When the third limiting pin 12 is not installed, the connecting seat 1 can be adjusted along the length of the support rod 6, so that the ball seat 2 can be flexibly adjusted on the support rod 6, making it more compatible with the trailer adapter and more flexible in use.

[0025] One end of the connecting rod 7 has a radially formed rotating connecting hole 701. The upper end of the support rod 6 passes through the rotating connecting hole 701. The inner wall of the rotating connecting hole 701 has a third limiting groove 702. The upper end of the support rod 6 has a fourth limiting groove 601. The third limiting groove 702 and the fourth limiting groove 601 cooperate with each other to form a second limiting channel. A plurality of second limiting members 8 are provided in the second limiting channel. Part of the second limiting member 8 is located in the third limiting groove 702 and the other part is located in the fourth limiting groove 601, so as to restrict the connecting rod 7 from detaching from the support rod 6. Through the second limiting channel formed by the cooperation of the third limiting groove 702 and the fourth limiting groove 601, and the embedded second limiting members 8 (ball bearings), the ball seat 2 can rotate relative to the connecting rod 7. Since the other end of the connecting rod 7 is used to connect to the vehicle, the ball seat 2 can swing relative to the vehicle, making the connection to the trailer more flexible, and thus adapting to the installation of the ball seat 2 and its cooperation with the trailer.

[0026] The second limiting member 8 is a ball bearing. The side wall of the connecting rod 7 has a second mounting hole 9 that communicates with the second limiting channel. The second mounting hole 9 is used for the ball bearing to enter. The ball bearing is directly embedded in the second limiting channel through the second mounting hole 9. Installation or replacement can be completed without complicated disassembly. The structure is simple and the installation is convenient.

[0027] A second plug 10 is provided on the second mounting hole 9. Similar to the first mounting hole 103 and the first plug 4, the second mounting hole 9 is also a threaded hole, and the second plug 10 is also a threaded plug with threads on its side wall. The second mounting hole 9 and the second plug 10 are used in a threaded engagement. The second plug 10 is installed after the ball is installed, thereby preventing the ball from falling out of the second mounting hole 9. Furthermore, since the second plug 10 can seal the second mounting hole 9, it can also prevent external contaminants such as mud and rainwater from entering the second limiting channel. This not only prevents the ball from jamming and failing due to dirt accumulation, but also avoids the ball from being corroded.

[0028] The connecting rod 7 is provided with a second limiting pin 11. The second limiting pin 11 passes radially through the connecting rod 7 and the bracket rod 6 along the rotating connecting hole 701 to limit the relative rotation of the connecting rod 7 and the bracket rod 6. During driving, the second limiting pin 11 is inserted to limit the swing of the ball seat 2 and achieve a locking effect. In addition, the second limiting pin 11 shares the force of the ball bearing during towing, preventing the ball from deforming and failing due to overload when towing the vehicle, thus improving reliability.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ball-joint trailer connector, comprising a connector (1) and a ball joint (2), characterized in that: The connecting seat (1) has a rotating connecting groove (101), and the ball seat (2) has a rotating connecting part (201) on one side. The rotating connecting part (201) can be inserted into the rotating connecting groove (101) and can rotate relative to the rotating connecting groove (101). The inner wall of the rotating connecting groove (101) has a first limiting groove (102), and the outer wall of the rotating connecting part (201) has a second limiting groove (202). The first limiting groove (102) and the second limiting groove (202) cooperate with each other to form a first limiting channel. A plurality of first limiting members (3) are provided in the first limiting channel. Part of the first limiting member (3) is located in the first limiting groove (102), and another part is located in the second limiting groove (202) to restrict the rotating connecting part (201) from disengaging from the rotating connecting groove (101).

2. The ball-joint trailer connector according to claim 1, characterized in that: The first limiting member (3) is a ball bearing, and the side wall of the connecting seat (1) is provided with a first mounting hole (103) that communicates with the first limiting channel. The first mounting hole (103) is used for the ball bearing to enter.

3. A ball-head trailer connector according to claim 2, characterized in that: A first plug (4) is provided on the first mounting hole (103).

4. A ball-head trailer connector according to claim 1, characterized in that: The connecting seat (1) is provided with a first limiting pin (5), which passes radially through the rotating connecting groove (101) and through the rotating connecting part (201) to limit the relative rotation between the rotating connecting part (201) and the rotating connecting groove (101).

5. A ball-head trailer connector according to claim 1, characterized in that: The connecting seat (1) is provided with a support rod (6), and a connecting rod (7) is provided at the upper end of the support rod (6). The connecting rod (7) is perpendicular to the support rod (6) and is used to connect the vehicle.

6. A ball-joint trailer connector according to claim 5, characterized in that: One end of the connecting rod (7) has a rotating connecting hole (701) along its radial direction. The upper end of the support rod (6) passes through the rotating connecting hole (701). The inner wall of the rotating connecting hole (701) has a third limiting groove (702). The upper end of the support rod (6) has a fourth limiting groove (601). The third limiting groove (702) and the fourth limiting groove (601) cooperate with each other to form a second limiting channel. A plurality of second limiting members (8) are provided in the second limiting channel. Part of the second limiting member (8) is located in the third limiting groove (702) and the other part is located in the fourth limiting groove (601) to restrict the connecting rod (7) from detaching from the support rod (6).

7. A ball-joint trailer connector according to claim 6, characterized in that: The second limiting member (8) is a ball bearing, and the side wall of the connecting rod (7) is provided with a second mounting hole (9) that communicates with the second limiting channel. The second mounting hole (9) is used for the ball bearing to enter.

8. A ball-head trailer connector according to claim 7, characterized in that: A second plug (10) is provided on the second mounting hole (9).

9. A ball-head trailer connector according to claim 8, characterized in that: The connecting rod (7) is provided with a second limiting pin (11), which passes radially through the connecting rod (7) and the support rod (6) along the rotating connecting hole (701) to limit the relative rotation of the connecting rod (7) and the support rod (6).

10. A ball-head trailer connector according to claim 5, characterized in that: The connecting seat (1) has a second connecting hole (104) on one side. The support rod (6) passes through the second connecting hole (104) vertically. The connecting rod (7) has a third limiting pin (12) which passes through the connecting seat (1) and the support rod (6) radially along the second connecting hole (104).

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