Convertible trailer connecting piece

Abstract

The utility model relates to a convertible trailer connecting piece. Belongs to the technical field of tow hooks. The trailer arm is used for being connected with a towed vehicle, and the ball head piece is used for being connected with the towed vehicle. The device further comprises a connecting base and a conversion piece. A plurality of mounting holes which are vertically and linearly arranged are transversely formed in the connecting seat in a penetrating manner, and the back part of the connecting seat is fixedly connected with the end part of the trailer arm; the conversion piece comprises a body part and two connecting blocks, the body part is used for mounting the ball head piece, the two connecting blocks extend out of the body part and are used for being connected with the connecting seat, and each connecting block is provided with an upper bolt hole and a lower bolt hole; the ball head piece comprises a ball head seat, a connecting part and at least two ball heads, wherein the connecting part is arranged on the back of the ball head seat and used for being connected with the body part, and the at least two ball heads are arranged on the ball head seat. According to the utility model, the ball head piece with the plurality of ball heads is arranged, and the conversion piece is arranged between the ball head piece and the connecting seat, so that the ball head piece and the conversion piece can be conveniently disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to a trailer connecting piece, in particular to a convertible trailer connecting piece, and belongs to the technical field of trailer hooks. Background Art

[0002] When a car breaks down and loses power, a tow truck is needed to solve the problem. Usually, family cars are equipped with simple trailer connectors. When using it, screw the tow hook into the screw hole near the fog light of the car (the round plastic plate needs to be removed), and then tie one end of the rope into the round hole of the tow hook. This solution is simple, but the following car still needs to be driven; when it is necessary to connect to an unmanned trailer caravan, the above solution cannot be used.

[0003] In the prior art, a ball head trailer hook and a ball head cover are usually connected to solve the above problem.

[0004] This connection method ensures that there is a hard connection between the trailer and the towed vehicle, and that the trailer and the towed vehicle can rotate flexibly, so that the "trailer-trailer" combined structure can move normally on urban and rural roads and better adapt to various road conditions.

[0005] For example, the utility model patent with the authorization announcement number CN 220242910U discloses a vehicle towing rear trailer device, which includes: it includes a trailer slot device and a trailer hook device, the trailer slot device is composed of a trailer hook connecting column, a trailer arm and a ball head trailer, the trailer hook connecting column is provided with a first through-type circular hole, a positioning pin is provided in the first through-type circular hole, and the positioning pin is locked by a positioning clamp, the trailer hook device is composed of a frame connecting plate and a trailer hook sleeve, the trailer hook sleeve is provided with a trailer hook slot hole, the trailer hook sleeve is provided with a second through-type circular hole, and the first through-type circular hole of the trailer hook connecting column corresponds to the second through-type circular holes provided on both sides of the trailer hook sleeve. It can be seen that the patent is designed based on the ball head and the ball head cover.

[0006] However, since trailers come in a variety of shapes and load capacities, trailer hooks usually come in a variety of models, usually differentiated by the size of the ball head. When a larger trailer needs to be towed, a larger ball head should also be used; in reality, the ball head covers of different trailers have a variety of different specifications. When the ball head and ball head cover have different specifications, it will lead to assembly failure, and the trailer hook device installed on the tractor needs to be disassembled and replaced, which makes things complicated. Utility Model Content

[0007] The utility model aims to solve the above problems, thereby providing a convertible trailer connector. The trailer connector of the utility model is provided with a ball head member having multiple ball heads, and a matching conversion member and a connecting seat, so that the ball head of the utility model can be conveniently switched and the stability of the connection is ensured.

[0008] The technical solution of the utility model to solve the above problems is as follows:

[0009] A convertible trailer connector comprises a trailer arm for connecting a towing vehicle and a ball head for connecting a towed vehicle; further comprising a connecting seat and a conversion member; the connecting seat is laterally penetrated with a plurality of mounting holes arranged in a vertical straight line, and the back is fixedly connected to the end of the trailer arm; the conversion member comprises a main body for mounting the ball head and two connecting blocks extending from the main body for connecting to the connecting seat, the connecting blocks being provided with an upper pin hole and a lower pin hole; the ball head member comprises a ball head seat, a connecting portion provided on the back of the ball head seat for connecting to the main body, and at least two ball heads provided on the ball head seat.

[0010] As a preferred embodiment of the above technical solution, the ball head component includes a first ball head arranged upward, a second ball head arranged leftward, and a third ball head arranged rightward; the first ball head, the second ball head, and the third ball head have different specifications.

[0011] As a preferred embodiment of the above technical solution, the main body is provided with a receiving groove for the connecting part to be placed therein; a first latch hole for fixing the connecting part is transversely opened on the groove wall of the receiving groove; and a second latch hole is correspondingly provided on the connecting part for facilitating its own fixation.

[0012] As a preferred embodiment of the above technical solution, there are two second pin holes, and the two second pin holes are respectively arranged corresponding to at least two ball heads on the ball head seat.

[0013] As a preferred embodiment of the above technical solution, it also includes an end threaded pin and a nut matching the threaded section of the end threaded pin.

[0014] As a preferred embodiment of the above technical solution, the end of the end threaded pin is provided with a radial through hole, and also includes a B-type elastic pin buckle for being inserted in the radial through hole to prevent the nut from loosening.

[0015] As a preferred embodiment of the above technical solution, protrusions are provided on both sides of the three vertical sides of the connecting seat, so that the three surfaces where the connecting seat contacts the conversion member are respectively formed with a first sliding groove, a second sliding groove and a third sliding groove.

[0016] As a preferred embodiment of the above technical solution, the three surfaces of the conversion member in contact with the connecting seat are respectively formed with a first slider, a second slider and a third slider protruding from the main body; the first slider, the second slider and the third slider are respectively arranged in cooperation with the first slide groove, the second slide groove and the third slide groove.

[0017] As a preferred embodiment of the above technical solution, the first slider and the second slider are arranged on the connecting block, and the third slider is arranged on the main body.

[0018] As a preferred embodiment of the above technical solution, the mounting holes include at least three types of first height holes, second height holes and third height holes arranged equally spaced from top to bottom; the spacing between holes of different heights is an integer multiple of the distance between the upper pin hole and the lower pin hole.

[0019] As a preferred embodiment of the above technical solution, the mounting holes include six height holes; the spacing between adjacent height holes is equal to the distance between the upper pin hole and the lower pin hole.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. The utility model provides a ball head member with multiple ball heads, and provides a conversion member between the ball head member and the connecting seat, so that the ball head member and the conversion member can be easily disassembled and installed;

[0022] 2. The utility model uses a latch to connect the ball head and the conversion member, and an anti-loosening structure is provided on the latch, which not only facilitates the conversion of the ball head, but also improves the stability of the connection between the two;

[0023] 3. The utility model provides a plurality of slide grooves and sliders between the connecting seat and the adapter, thereby improving the connection stability between the two;

[0024] 4. The utility model provides 5 adjustable height ranges by arranging 6 height holes on the connecting base, thereby further improving the applicability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] In the figure, 1-trailer arm, 2-connecting seat, 3-conversion piece, 4-ball head piece, 5-end threaded pin;

[0027] 21-first slide groove, 22-second slide groove, 23-third slide groove, 31-main body, 32-connecting block, 41-first ball head, 42-second ball head, 43-third ball head, 44-ball head seat, 45-connecting part;

[0028] 2-1-installation hole, 31-1-first latch hole, 32-3-upper latch hole, 32-4-lower latch hole, 45-1 second latch hole. DETAILED DESCRIPTION

[0029] The present invention is further explained below in conjunction with the accompanying drawings.

[0030] This specific implementation is only an explanation of the utility model, not a limitation of the utility model. Any changes made by those skilled in the art after reading the specification of the utility model will be protected by the patent law as long as they are within the scope of the claims.

[0031] like Figure 1 As shown, a convertible trailer connecting piece comprises a trailer arm 1, a connecting seat 2, a conversion piece 3 and a ball head piece 4.

[0032] The trailer arm 1 and the connecting seat 2 are integrally formed. When in use, one end of the trailer arm 1 is mounted on the towing vehicle, and one end of the connecting seat 2 is suspended.

[0033] The conversion member 3 is connected with the connection seat 2, and the connection seat 2 is a vertically arranged fixed body, which has three surfaces that can cooperate with the conversion member 3; the conversion member 3 is installed based on the connection seat 2, and has three surfaces that can cooperate with the connection seat 2. Specifically, the three vertical side surfaces of the connection seat 2 are provided with protrusions on both sides, so that the three surfaces where the connection seat 2 contacts the conversion member 3 are respectively formed with a first slide 21, a second slide 22 and a third slide 23; correspondingly, the three surfaces where the conversion member 3 contacts the connection seat 2 are respectively formed with a first slider, a second slider and a third slider protruding from the body. The first slider, the second slider and the third slider are respectively provided with the first slide 21, the second slide 22 and the third slide 23. Furthermore, the connection seat 2 is horizontally penetrated with 6 mounting holes 2-1 arranged in a vertical straight line, which are arranged at equal intervals from top to bottom, and are respectively referred to as the first height hole, the second height hole, the third height hole, the fourth height hole, the fifth height hole and the sixth height hole. In this embodiment, the distance between adjacent height holes is L.

[0034] Meanwhile, the conversion member 3 includes a main body 31 for mounting the ball head member 4 and two connecting blocks 32 extending from the main body for connecting the connecting seat 2. An upper pin hole 32-3 and a lower pin hole 32-4 are provided on the connecting block 32. In this embodiment, the distance between the upper pin hole 32-3 and the lower pin hole 32-4 is also L.

[0035] In this way, the trailer connector of this example can support 5 kinds of height adjustments. The first installation method: the upper plug hole 32-3 corresponds to the first height hole, and the lower plug hole 32-4 corresponds to the second height hole; the second installation method: the upper plug hole 32-3 corresponds to the second height hole, and the lower plug hole 32-4 corresponds to the third height hole; the third installation method: the upper plug hole 32-3 corresponds to the third height hole, and the lower plug hole 32-4 corresponds to the fourth height hole; the fourth installation method: the upper plug hole 32-3 corresponds to the fourth height hole, and the lower plug hole 32-4 corresponds to the fifth height hole; the fifth installation method: the upper plug hole 32-3 corresponds to the fifth height hole, and the lower plug hole 32-4 corresponds to the sixth height hole.

[0036] The utility model not only supports the height adjustment of the ball head, but also supports the size conversion of the ball head.

[0037] Specifically, the ball head component 4 includes a ball head seat 44, a connecting portion 45 arranged on the back of the ball head seat for connecting to the main body portion 31, and three ball heads arranged on the ball head seat; including a first ball head 41 arranged upward, a second ball head 42 arranged to the left, and a third ball head 43 arranged to the right; the first ball head 41, the second ball head 42 and the third ball head 43 have different specifications.

[0038] Therefore, after the utility model is installed on the tractor, if the ball head cover of the trailer does not match the ball head, the end threaded pin 5 installed between the first pin hole 31-1 and the first pin hole 31-1 can be removed first, and then the ball head component 4 can be removed, and then the ball head component 4 can be rotated to make the ball head of the appropriate size face upward, and then the main body 31 can be inserted into the connecting portion 45, and then the end threaded pin 5 just removed can be installed in place.

[0039] After the problem of the ball head size is solved, due to the variety of trailers, if the ball head height is not appropriate, the installation position of the conversion member 3 on the connecting seat 2 can be adjusted to adjust the height of the ball head.

Claims

1. A convertible trailer connection, comprising a trailer arm (1) for connecting to a towing vehicle and a ball head (4) for connecting to a towed vehicle; characterized in that: It also comprises a connecting seat (2) and a conversion member (3); the connecting seat (2) is provided with a plurality of mounting holes (2-1) arranged in a vertical straight line in a transverse direction, and the back thereof is fixedly connected to the end of the trailer arm (1); the conversion member (3) comprises a main body (31) for mounting the ball head member (4) and two connecting blocks (32) extending from the main body for connecting to the connecting seat (2), and the connecting blocks (32) are provided with an upper pin hole (32-3) and a lower pin hole (32-4); the ball head member (4) comprises a ball head seat (44), a connecting portion (45) provided on the back of the ball head seat for connecting to the main body (31), and at least two ball heads provided on the ball head seat; The main body (31) is provided with a receiving groove for the connecting portion (45) to be placed therein; a first latch hole (31-1) for fixing the connecting portion is transversely provided on the groove wall of the receiving groove; and a second latch hole (45-1) for facilitating its own fixing is correspondingly provided on the connecting portion (45).

2. A convertible trailer connector according to claim 1, characterized in that: The ball head component (4) comprises a first ball head (41) arranged upward, a second ball head (42) arranged leftward, and a third ball head (43) arranged rightward; the first ball head (41), the second ball head (42), and the third ball head (43) have different specifications.

3. A convertible trailer connector according to claim 1, characterized in that: It also includes an end threaded pin (5) and a nut matching the threaded section of the end threaded pin.

4. A convertible trailer connection according to claim 3, characterized in that: The end of the end threaded plug pin (5) is provided with a radial through hole, and also includes a B-type elastic pin buckle for being inserted in the radial through hole to prevent the nut from loosening.

5. A convertible trailer connector according to claim 1, characterized in that: Protrusions are provided on both sides of the three vertical side surfaces of the connection seat (2), so that the three surfaces of the connection seat (2) in contact with the conversion member (3) are respectively formed with a first slide groove (21), a second slide groove (22) and a third slide groove (23).

6. A convertible trailer connection according to claim 5, characterized in that: The three surfaces of the conversion member (3) in contact with the connection seat (2) are respectively formed with a first slider, a second slider and a third slider protruding from the body; the first slider, the second slider and the third slider are respectively arranged in cooperation with the first slide groove (21), the second slide groove (22) and the third slide groove (23).

7. A convertible trailer connection according to claim 6, characterized in that: The first slider and the second slider are arranged on the connecting block (32), and the third slider is arranged on the main body (31).

8. A convertible trailer connector according to claim 1, characterized in that: The mounting holes (2-1) include at least three types of first height holes, second height holes and third height holes arranged at equal intervals from top to bottom; the spacing between holes of different heights is an integer multiple of the distance between the upper pin hole (32-3) and the lower pin hole (32-4).

9. A convertible trailer connection according to claim 8, characterized in that: The mounting holes (2-1) include six types of height holes; the spacing between adjacent height holes is equal to the distance between the upper pin hole (32-3) and the lower pin hole (32-4).

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