Trailer arm accessory

A technology of trailers and accessories, applied in the field of trailer arms

Inactive Publication Date: 2018-07-13
唐刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of patent does not further expand the function of the existing standard trailer arm by adding specific accessories

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The trailer arm accessory, as shown in the figure, includes: an external hanging base 1, which is used to connect and fix the external hanging part 2 and the standard trailer arm 3, through the standard towing ball screw 311 through the base mounting hole 13, and the towing ball nut 312 , the towing ball nut washer 313 is clamped, installed and fastened to the lower part of the front tongue 32 of the trailer arm; The front end of the seat 1 is locked on the hanging base 1 through the hanging piece locking screw 15 through the hanging piece tenon 11 and inserted into the hanging piece locking screw counterbore 22; Figure 8 — Figure 11 It shows the working state of installation of the above components.

Embodiment 2

[0035] In the tightly installed state, the parts protruding below the front tongue 32 of the towing ball screw 311, the towing ball nut 312, and the towing ball nut washer 313 block the external hanging in the base through the step hole 12 in the horizontal direction. Part locking screw 15, so that the removal tool cannot take out the hanging part locking screw 15, thereby increasing the difficulty of stealing the hanging part 2, and playing the anti-theft effect of the hanging part 2; Take out the standard tow ball 31, then the blocking condition of the pendant locking screw 15 disappears, take out the pendant locking screw 15, then the pendant 2 can be drawn out along the top, realizing the disassembly and replacement of the pendant 2 with different functions, thus endowing the existing standard 3 different additional functions of the trailer arm; Figure 12 The principle of disassembly of the above components is illustrated.

Embodiment 3

[0037] The external base 1 is limited by the base positioning step screw slot 14 at its tail, the external base positioning screw 16, and the external base positioning screw counterbore 33 provided under the front tongue of the trailer arm, which limits its position in the installation or working state. Angle rotation in the middle; the base positioning step screw slot 14 adopts an open notch design, which provides a certain amount of front and rear position correction for the external base 1 during installation, and is convenient to adapt to the standards produced by different manufacturers with certain size deviations Trailer arm and displacement during installation.

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PUM

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Abstract

The invention discloses a trailer arm accessory. The accessory comprises an external hanging base and an external hanging member arranged at the front end of the external hanging base. The external hanging member is fixed on the base through a tenon-and-screw member, the base is clamped above the front part of a standard trailer arm through a towing ball screw rod, a nut and a cushioning ring. External hanging members of different functions can be conveniently replaced, and multiple expanding functions are given to existing standard trailer arms. Anti-theft designing is conducted on the external hanging members by using screw rod dimensions of existing towing balls.

Description

technical field [0001] The invention belongs to the technical field of mechanical design and manufacture, in particular to the technical field of auto parts design and manufacture, in particular to a trailer arm used for car traction and rescue. Background technique [0002] The trailer arm is a pendant with one end installed in the standard quick-insert square opening of the rear bumper of the car chassis, and the other end with a specific towing adapter for connection. It is mainly used to connect and tow trailers, broken down motor vehicles, and other items that can be towed or carried. [0003] Publication numbers are that patents such as CN203600915U and CN203739561U disclose standard trailer arms with specific functions respectively. [0004] The above-mentioned patents are all based on the common standard trailer arm, which improves the local process and improves the safety and performance. However, this type of patent does not further expand the function of the exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60D1/06B60D1/24
CPCB60D1/06B60D1/24
Inventor 唐刚
Owner 唐刚
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