CN112248728A

CN112248728A - Side spiral cover towing hook

Info

Publication number: CN112248728A
Application number: CN202011366111.6A
Authority: CN
Inventors: 唐刚
Original assignee: Chengdu Super Banner Technology Co ltd
Current assignee: Chengdu Super Banner Technology Co ltd
Priority date: 2020-11-29
Filing date: 2020-11-29
Publication date: 2021-01-22

Abstract

The invention discloses a side spiral cover trailer hook. The side-turning type upper cover comprises a U-shaped arm body, an upper cover and a trailer ball, the problem that the upturning type upper cover possibly interferes with a spare tire or other hanging objects on the back of an automobile is solved, and the upper cover can be provided with a function expansion piece, so that the application range is further expanded.

Description

Side spiral cover towing hook

Technical Field

The invention belongs to the technical field of mechanical design and manufacture, particularly belongs to the technical field of automobile part design and manufacture, and particularly relates to a side screw cap towing hook for automobile traction and rescue.

Background

The trailer hook is a hanging part and a hoisting part, one end of the trailer hook is fixed on a trailer bar of an automobile chassis, and the other end of the trailer hook is provided with a specific traction joint or interface or plays a role in connection. The device is mainly used for connecting and towing trailers, fault vehicles, other vehicles needing to be towed, and hanging and carrying articles.

Patents CN304340381S and CN304349007S disclose related tow hooks respectively.

The basic structures of the above patents are similar, and the two types of the towing hook are a U-shaped bearing towing hook with a mounting base, and an upper cover which can be opened and closed is arranged above an opening of the U-shaped towing hook to form the towing hook. However, the patent technologies of this type all have the following technical problems: when the upper cover is opened upwards to use the towing hook, the upper cover may interfere with a spare tire, a spare oil tank, a rescue tool or other appliances hung on the back of the automobile, so that the upper cover cannot be normally opened to hinder the execution of a towing task, secondly, the upper cover is not provided with an interface capable of being integrated with other expansion function plug-ins, and thirdly, the upper cover locking mechanism is complex and is not beneficial to reducing the weight, the manufacturing and installation cost and improving the efficiency.

Disclosure of Invention

The invention aims to: aiming at the problems in the prior art, the trailer hook has a simple structure, has a horizontal side-screwing cover opening function, integrates installation of other functional plug-ins and a pendant installation interface, solves the problem that interference possibly occurs with a spare tire or other hanging objects on the back of an automobile, and can expand other functional requirements through installation of an expansion piece.

The invention is realized by the following technical scheme:

the side spiral cover trailer hook comprises a U-shaped arm body, an upper cover and a trailer ball.

The utility model discloses a pivot structure, including upper cover constant head tank, U-shaped arm body, pivot hole up end circumference, upper cover tail end is provided with perpendicular pivot, and the concentric circumference in upper cover pivot root is provided with positioning groove, U-shaped arm body tail end is provided with the pivot cavity, tail end upper portion be provided with the pivot via hole that the pivot cavity link up, pivot via hole up end circumference be provided with the location tooth that the upper cover constant head tank corresponds, the pivot via hole is provided with the.

The spring core rod is arranged at the bottom of the upper cover rotating shaft, the pressure spring is arranged on the spring core rod, one end of the pressure spring props against the round cap of the spring core rod and is fixedly restrained by the spring core rod, the other end of the pressure spring props against the rotating shaft cavity spring seat, and the upper cover is pre-tightened and fixedly connected onto the U-shaped arm body.

The upper cover front end is provided with the extension mouth for installation, connection third party function extension piece, the extension mouth is provided with the extension piece, and the extension piece passes through the screw with it be fixed in on the upper cover.

The rear end of the U-shaped arm body is provided with a mounting seat used for mounting the towing hook on a rear towing bar of the automobile. The mounting seat is provided with a screw through hole.

The invention has the beneficial effects that:

in the invention, the upper cover passes through a through hole of a rotating shaft of the U-shaped arm body through a rotating shaft of the upper cover, the upper cover is fixed on the U-shaped arm body by a spring core rod and a pressure spring which are arranged on the rotating shaft in a pre-tightening way, a positioning groove is arranged on the concentric circumference of the root part of the rotating shaft of the upper cover, meanwhile, the upper end surface of the through hole of the rotating shaft is concentrically and circumferentially provided with positioning teeth corresponding to the positioning grooves of the upper cover, when the upper cover is in a closed positioning state, the positioning teeth are meshed with the positioning grooves to horizontally rotate the upper cover, the upper cover will rise by the height of one positioning tooth due to the interaction of the positioning tooth and the positioning groove slope, and after the upper cover is rotated to the designated position, under the action of the pretightening force of the pressure spring, the upper cover falls down, the other group of positioning grooves and the positioning teeth are mutually meshed, the upper cover is positioned in a side-open state, therefore, the upper cover can be horizontally rotated, opened and positioned, the vertical height is not occupied, and the possibility of interference with a spare tire on the back of an automobile or other suspended objects is avoided.

Furthermore, the front end of the upper cover is provided with an expansion port for installing and connecting a third-party function expansion piece, the expansion port is provided with an expansion piece, and the expansion piece is fixedly connected in the expansion port through an installation screw, so that the expansion of multiple functions of the towing hook is realized.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a right side view of the present invention;

FIG. 3 is a left side view of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is a bottom view of the present invention;

FIG. 6 is a perspective view of the present invention;

FIG. 7 is an open perspective view of the upper cover of the present invention;

FIG. 8 is a top plan view of the upper cover of the present invention in an open position;

FIG. 9 is an exploded view of the present invention;

FIG. 10 is a view showing the construction of the arm body of the present invention;

FIG. 11 is a view showing the construction of the upper cover of the present invention;

FIG. 12 is a right side view of the upper cover of the present invention;

FIG. 13 is an installed cross-sectional view of the present invention;

FIG. 14 is a cross-sectional view of the upper cover according to the present invention;

FIG. 15 is a cross-sectional view of the present invention with the upper lid fully open;

FIG. 16 shows example 2 of the present invention;

FIG. 17 shows example 3 of the present invention;

FIG. 18 shows example 4 of the present invention;

fig. 19 shows example 5 of the present invention.

Wherein, 1 is a U-shaped arm body; 11-trailer ball; 12-a mounting seat; 121-mounting a screw through hole; 122 — safety ring; 13-positioning teeth; 14-a rotating shaft through hole; 15-spring seat; 16-a rotating shaft cavity; 2, covering the upper cover; 21-upper cover rotating shaft; 22-positioning groove; 23-an expansion port; 3-an extension; 31-an extension screw seat; 32-extension fastening block; 33-extension screw; 4-a pressure spring; 5-spring core rod.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention is described in detail by the following embodiments, which are only used for further illustration of the present invention, but not to be construed as limiting the scope of the present invention, and the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure also belong to the scope of the present invention.

With reference to fig. 1 to 17:

example 1

The side spiral cover trailer hook comprises a U-shaped arm body 1, an upper cover 2 and a trailer ball 11.

2 tails of upper cover are provided with pivot 21, and the concentric circumference in upper cover pivot 21 roots is provided with positioning groove 22, 1 body tail end of U-shaped arm is provided with pivot cavity 16, tail end upper portion be provided with the pivot via hole 14 that the pivot cavity link up, the concentric circumference in pivot via hole 14 up end be provided with the corresponding location tooth 13 of upper cover constant head tank 22, pivot via hole 14 is provided with spring holder 15 at the inside upside of pivot cavity 16.

The bottom of the upper cover rotating shaft 21 is provided with a spring core rod 4, a pressure spring 5 is arranged on the spring core rod, one end of the pressure spring 5 props against a round cap of the spring core rod 4 and is fixedly restrained by the spring core rod 4, the other end of the pressure spring props against the spring seat 15, and the upper cover 2 is pre-tightened and fixedly connected onto the U-shaped arm body 1.

The upper cover 2 penetrates through the U-shaped arm body rotating shaft through hole 14 through the upper cover rotating shaft 21 and is fixed on the U-shaped arm body 1 through the spring core rod 4 and the pressure spring 5 which are arranged on the rotating shaft 21 in a pre-tightening mode, when the upper cover 2 is in a closed locating state, the upper cover 2 is rotated, due to the interaction of the locating teeth 13 and the inclined planes of the locating grooves 22, the upper cover 2 rises by the height of one locating tooth 13, after the upper cover 2 rotates to a specified position, under the action of the pre-tightening force of the pressure spring 5, the upper cover 2 falls down, the other group of locating grooves 22 are meshed with the locating teeth 13, and the upper cover 2 is located in a side opening state.

The front end of the upper cover 2 is provided with an expansion port 23 for installing and connecting a third-party function expansion piece 3, the expansion port 23 is provided with the expansion piece 3, and the expansion piece 3 is fixed in the expansion port 23 through an installation screw 33, so that the expansion of multiple functions of the towing hook is realized.

The rear end of the U-shaped arm body 1 is provided with a mounting seat 12 for mounting the towing hook on a rear towing bar of an automobile. The mount is provided with screw via 121.

Example 2

The extension piece 3 can be a flagpole seat used for crossing in the field and inserting and fixing a flag for indication and positioning.

Example 3

The extension 3 may be an antenna for long-distance wireless communication.

Example 4

The U-shaped arm 1 mounting base 12 is enlarged to fit a specific type of vehicle and is provided with a trailer safety ring 122.

Example 5

In the form of a universal tubular socket for the mounting 12 of the U-shaped arm 1.

Claims

1. The utility model provides a side spiral cover tow hook, includes U-shaped arm body, upper cover, trailer ball, its characterized in that, the upper cover can be on the U-shaped arm body horizontal rotation open close and the location, still includes, the upper cover is provided with the extension, U-shaped arm body rear end is provided with mounting base.

2. The side spin cover trailer hook of claim 1, wherein: the utility model discloses a U-shaped arm body, including upper cover, U-shaped arm body, pivot cavity, pivot hole upper end face concentric circumference be provided with the pivot hole that the pivot cavity link up, the upper cover tail end is provided with the upper cover pivot, and the concentric circumference in upper cover pivot root is provided with positioning groove, U-shaped arm body tail end is provided with the pivot cavity, tail end upper portion be provided with the pivot via hole that the pivot cavity link up, the concentric circumference in pivot via hole up end be provided with.

3. The side spin cover trailer hook of claim 2, wherein: the spring core rod is arranged at the bottom of the upper cover rotating shaft, a pressure spring is arranged on the spring core rod, one end of the pressure spring abuts against the round cap of the spring core rod and is fixedly restrained by the spring core rod, the other end of the pressure spring abuts against the spring seat, and the upper cover is pre-tightened and fixedly connected onto the U-shaped arm account.

4. The side spin cover trailer hook of claim 1, wherein: the front end of the upper cover is provided with an expansion opening, and the expansion piece is arranged in the expansion opening and fixed on the upper cover.

5. A side cap tow hook according to any of claims 2-4, wherein: the mounting base can be in a flange form or a quick-insertion square tube form so as to meet the mounting requirements of different vehicle types.