Trailer arm capable of being rapidly adjusted

Abstract

The trailer arm capable of being rapidly adjusted comprises a connecting piece, a fixing piece, a positioning piece and a hook piece, the connecting piece comprises a pull rod part and a tenon part, a pin groove is formed in the right side of the tenon part, limiting sliding grooves are formed in the front face and the back face of the tenon part, and the fixing piece comprises a mounting block and a limiting sliding part. The installation block is in sliding connection with the limiting sliding groove through the limiting sliding part, the installation block is vertically provided with an installation opening, the installation block is transversely provided with an installation hole, and under the joint cooperation of the pin groove, the limiting sliding groove, the pin shaft, the limiting shaft barrel, the installation hole and the pin groove, the position of the hook piece on the tenon part can be rapidly adjusted. Therefore, the force arm is adjusted, the use strength of the trailer arm is guaranteed, and the problems that an existing trailer arm hook piece is fixed on a tenon part through matching of two adjusting pins and a limiting piece, the position height of the hook piece cannot be rapidly adjusted, and the trailer efficiency is affected are solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle traction technology, specifically to a trailer arm that can be quickly adjusted. Background Technology

[0002] Currently, trailer hitches are becoming increasingly common in daily life, and their applications are becoming more widespread. For example, vehicles may need to be towed due to breakdowns during use, and some vehicles such as RVs, motorcycles, and speedboats need to be towed during transport and movement. Therefore, to facilitate towing, a trailer hitch assembly is installed on the front of the towed vehicle, and a matching trailer arm is installed at the rear of the towing vehicle. However, existing trailer arm hook assemblies are fixed on the tenon part by two adjusting pins and limiting parts, which makes it impossible to quickly adjust the position and height of the hook assembly, thus affecting towing efficiency.

[0003] For example, announcement number CN216833397U discloses a trailer device, which is detachably connected to an adjusting arm via a trailer assembly. The trailer assembly can be installed on adjusting holes of different heights according to actual needs to meet the adaptation requirements of different trailer scenarios. The trailer assembly has mounting holes that match the adjusting holes. When assembling for use, the mounting holes on the trailer assembly are aligned with the adjusting holes on the adjusting arm to the correct installation position. Then, adjusting pins are passed through the adjusting holes and mounting holes in sequence to firmly fix the trailer assembly to the adjusting arm. To avoid the trailer device shaking and instability caused by the gap in the hole-shaft fit, a buffer pad is provided on the contact end face of the trailer assembly and the adjusting arm. One end of the buffer pad abuts against the trailer. The bottom of the trailer assembly, with the other end abutting against the contact surface of the adjusting arm, fills the gap between the trailer assembly and the adjusting arm. It also greatly reduces the movement space of the adjusting pin through the adjusting hole and mounting hole, making the trailer assembly more stable and shock-absorbing during use, reducing noise generated during towing, and avoiding repeated collisions caused by installation gaps during use, thus improving the service life of the trailer device. In addition, since the towed vehicle is usually heavy and the distance between the front and rear vehicles is short, situations such as starting, sudden braking, turning, and uneven road surfaces will be encountered during the journey. Inertia and road conditions will inevitably exert a large impact force on the trailer device sandwiched between the front and rear vehicles. The presence of the buffer pad can absorb and mitigate most of the impact force, protecting the trailer device and making towing safer.

[0004] To address this, we propose a trailer arm that can be quickly adjusted. Summary of the Invention

[0005] The purpose of this invention is to provide a trailer arm that can be quickly adjusted, which solves the problem in the prior art where the existing trailer arm hook is fixed on the tenon part 102 by two adjusting pins in cooperation with the limiting member, which makes it impossible to quickly adjust the position and height of the hook, thus affecting the trailer efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a trailer arm that can be quickly adjusted, comprising a connector, a fixing member, a positioning member, and a hook member. The connector includes a pull rod portion and a tenon portion. The tenon portion has a pin groove on its right side and limit sliding grooves on both its front and back sides. The fixing member includes a mounting block and a limit sliding portion. The mounting block is slidably connected to the limit sliding groove through the limit sliding portion. The mounting block has a vertical mounting opening and a horizontal mounting hole. The hook member passes through the mounting opening and is engaged with the mounting block. The positioning member includes:

[0007] The pin, which is inserted into the pin groove through the mounting hole, is used to limit and fix the mounting block;

[0008] The limiting sleeve is fixedly sleeved on the outer wall of the pin and inserted into the mounting hole to connect the pin to the mounting block.

[0009] Preferably, there are several pin slots, and the pin shaft is adapted to the pin slot. By setting the pin shaft, the pin shaft can be inserted into the pin slot, thereby limiting and fixing the mounting block on the tenon part.

[0010] Preferably, the hook is adapted to the mounting port.

[0011] Preferably, the limiting shaft is made of elastic steel sheet, and the opening diameter of the limiting shaft near the pin is larger than the pin diameter. By using elastic steel sheet as the material for the limiting shaft, the limiting shaft can be locked in the mounting hole, thereby improving the stability of the pin on the mounting block.

[0012] Preferably, both the upper and lower ends of the hook are spherical. By setting both ends of the hook to be spherical, it is easier to hang the trailer rope on the hook.

[0013] Preferably, the tie rod portion has two fixing holes. By providing fixing holes, the tie rod portion can be fixed to the vehicle with bolts through the fixing holes.

[0014] Preferably, the limiting sliding part is adapted to the limiting sliding groove. By setting the limiting sliding groove, the limiting sliding part can be fixedly slid on the tenon part.

[0015] This invention provides a trailer boom that can be quickly adjusted. Compared with the prior art, it has the following advantages:

[0016] This quick-adjustable trailer arm, through the combined action of a pin groove, a limiting slide, a pin shaft, a limiting shaft sleeve, and mounting holes and pin grooves, allows for rapid adjustment of the hook's position on the tenon, thereby adjusting the lever arm and ensuring the trailer arm's strength. This solves the problem of existing trailer arm hooks being fixed to the tenon by two adjusting pins and a limiting component, which prevents quick adjustment of the hook's position and height, thus affecting trailer efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a front cross-sectional view of the present invention;

[0019] Figure 3 This is a bottom structural diagram of the present invention;

[0020] Figure 4 For the present invention Figure 2 Enlarged structural diagram of section A in the middle.

[0021] In the diagram: 1. Connector; 101. Pull rod part; 102. Tenon part; 1021. Pin groove; 1022. Limiting slide groove; 2. Fixing part; 201. Mounting block; 202. Limiting sliding part; 203. Mounting port; 204. Mounting hole; 3. Positioning part; 301. Pin shaft; 302. Limiting shaft cylinder; 4. Hook part. Detailed Implementation

[0022] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0023] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Please see Figures 1-4 The present invention provides a technical solution:

[0026] A quick-adjustable trailer arm includes a connector 1, a fixing member 2, a positioning member 3, and a hook member 4. The connector 1 includes a pull rod portion 101 and a tenon portion 102. The tenon portion 102 has a pin groove 1021 on its right side and limit sliding grooves 1022 on both its front and back sides. The fixing member 2 includes a mounting block 201 and a limit sliding portion 202. The mounting block 201 is slidably connected to the limit sliding groove 1022 through the limit sliding member. The mounting block 201 has a vertical mounting opening 203 and a horizontal mounting hole 204. The hook member 4 passes through the mounting opening 203 and is snapped onto the mounting block 201. The positioning member 3 includes:

[0027] The pin 301, which is inserted into the pin groove 1021 through the movable through mounting hole 204, is used to limit and fix the mounting block 201. There are several pin grooves 1021, and the pin 301 is adapted to the pin groove 1021. By setting the pin 301, the pin 301 can be inserted into the pin groove 1021, thereby limiting and fixing the mounting block 201 on the tenon part 102.

[0028] The limiting sleeve 302 is fixedly sleeved on the outer wall of the pin 301 and inserted into the mounting hole 204 for connecting the pin 301 to the mounting block 201. The hook 4 is adapted to the mounting port 203. The limiting sleeve 302 is made of elastic steel sheet, and the diameter of the opening of the limiting sleeve 302 near the pin 301 is larger than the diameter of the pin 301. By using elastic steel sheet as the material of the limiting sleeve 302, the limiting sleeve 302 can be inserted into the mounting hole 204, thereby improving the stability of the pin 301 on the mounting block 201.

[0029] In use, when it is necessary to adjust the position of the hook 4 on the tenon 102, the pin 301 can be pulled outward to disengage it from the pin groove 1021. The pin 301 drives the limiting cylinder 302 to move outward from the mounting hole 204, so that the pin 301 no longer limits the mounting block 201. At this time, the mounting block 201 can be moved up or down, which in turn moves the hook 4 up or down, thereby adjusting the position of the hook 4 on the tenon 102. Once the position is determined, the pin 301 is pressed inward to re-insert it into the pin groove 1021, causing the pin 301 to drive the limiting cylinder 302 into the mounting hole 204, thus adjusting the position of the mounting block 201. 01. The position of the hook 4 on the tenon 102 is adjusted again by limiting and fixing the position. The above structure can quickly adjust the position of the hook 4 on the tenon 102, thereby adjusting the lever arm and ensuring the strength of the trailer arm. This solves the problem that the existing trailer arm hook 4 is fixed on the tenon 102 by two adjusting pins and limiting parts, which makes it impossible to quickly adjust the position and height of the hook 4, thus affecting the towing efficiency. By setting the fixing block 6, connecting rod 7, and rod hole 8, the connection strength between the fixing part 2 and the connecting part 1 can be increased, thereby improving the strength of the trailer arm, avoiding deformation, and improving the safety during towing. The structure is simple and highly practical.

[0030] Furthermore, there are several pin grooves 1021, and the pin shaft 301 is adapted to the pin groove 1021;

[0031] By setting a pin 301, the pin 301 can be inserted into the pin groove 1021, thereby limiting and fixing the mounting block 201 on the tenon portion 102.

[0032] Furthermore, the hook 4 is compatible with the mounting port 203.

[0033] Furthermore, the limiting shaft cylinder 302 is made of elastic steel sheet, and the opening diameter of the end of the limiting shaft cylinder 302 near the pin 301 is larger than the diameter of the pin 301.

[0034] By using elastic steel sheet as the material for the limiting shaft cylinder 302, the limiting shaft cylinder 302 can be locked in the mounting hole 204, thereby improving the stability of the pin 301 on the mounting block 201.

[0035] Furthermore, both the upper and lower ends of the hook component 4 are spherical;

[0036] By setting the upper and lower ends of the hook 4 to be spherical, it is easy to hang the trailer rope on the hook 4.

[0037] Furthermore, the pull rod part 101 is provided with two fixing holes 1011;

[0038] The tie rod part 101 can be fixed to the vehicle with bolts through the fixing hole 1011.

[0039] Furthermore, the limiting sliding part 202 is adapted to the limiting sliding groove 1022;

[0040] By setting the limiting slide groove 1022, the limiting sliding part 202 can be fixedly slid on the tenon part 102.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A trailer arm that can be quickly adjusted, comprising a connecting piece (1), a fixing piece (2), a positioning piece (3) and a hook piece (4), characterized in that: The connecting piece (1) comprises a pull rod part (101) and a tenon part (102), the tenon part (102) is provided with a pin slot (1021) on the right side, the front and back surfaces of the tenon part (102) are provided with limiting sliding grooves (1022), the fixing piece (2) comprises a mounting block (201) and a limiting sliding part (202), the mounting block (201) is slidably connected with the limiting sliding grooves (1022) through the limiting sliding part, the mounting block (201) is vertically provided with a mounting opening (203), and the mounting block (201) is transversely provided with a mounting hole (204), the hook piece (4) penetrates through the mounting opening (203) and is clamped on the mounting block (201), and the positioning piece (3) comprises: A pin shaft (301) is movably inserted into the pin slot (1021) through the mounting hole (204) and is used for limiting and fixing the mounting block (201); A limiting shaft cylinder (302) is fixedly sleeved on the outer wall of the pin shaft (301) and is clamped into the mounting hole (204) and is used for connecting the pin shaft (301) on the mounting block (201).

2. A quickly adjustable trailer arm according to claim 1, characterized in that: The number of the pin slots (1021) is several, and the pin shaft (301) is matched with the pin slots (1021).

3. A quickly adjustable trailer arm as claimed in claim 1, wherein: The hook piece (4) is matched with the mounting opening (203).

4. A quickly adjustable trailer arm as claimed in claim 1, wherein: The limiting shaft cylinder (302) is made of elastic steel sheet, and the opening diameter of the limiting shaft cylinder (302) near the pin shaft (301) is greater than the diameter of the pin shaft (301).

5. A quickly adjustable trailer arm as claimed in claim 1, wherein: The upper and lower ends of the hook piece (4) are spherical.

6. A quickly adjustable trailer arm as claimed in claim 1, wherein: The pull rod part (101) is provided with two fixing holes (1011).

7. A quickly adjustable trailer arm as claimed in claim 1, wherein: The limiting sliding part (202) is matched with the limiting sliding grooves (1022).

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