CN201647041U

CN201647041U - Brake

Info

Publication number: CN201647041U
Application number: CN2010201501885U
Authority: CN
Inventors: 刘迎杰
Original assignee: ZHEJIANG ZUBOO ELECTRIC VEHICLE CO Ltd
Current assignee: Zhejiang leopard electric vehicle Limited by Share Ltd
Priority date: 2010-03-31
Filing date: 2010-03-31
Publication date: 2010-11-24
Anticipated expiration: 2020-03-31

Abstract

The utility model belongs to the technical field of brakes, in particular to a brake used for an electric bicycle or motorcycle. A brake shoe component is arranged on the inner side of a drum cover, the brake shoe component consists of two semicircular-arc brake shoes arranged symmetrically, the adjacent ends of the two brake shoes are clamped with a cylinder via a semicircular groove, the cylinder is fixed on the drum cover, a cam is arranged between the other ends of the two brake shoes, a return spring used for tensioning the brake shoes is disposed between the two brake shoes, a cam rocker arm component and a brake cable strut are arranged on the outer side of the drum cover, a rocker arm of the cam rocker component is fixedly connected with a cam via a rotating shaft, a torsion spring capable of rotating the cam is disposed between the rocker arm and the drum cover, and one end of the torsion spring is clamped on the drum cover while the other end is arranged on the rocker arm. The brake is convenient in installation because the brake cable strut is integrated with the drum cover, has large contact area, fine friction effect and brake effect because the diameter of the outer circle formed by the two brake shoes is large, and then is applicable to braking systems of electric bicycles and motorcycles.

Description

A kind of drg

Technical field:

The utility model belongs to the drg technical field, refers in particular to a kind of drg that is used on storage battery car or the motor bike.

Background technology:

Drg is the mechanical component that make the movement parts in the machinery stop or slowing down, and its general principle of work is: utilize with the continuous non-rotating element of vehicle body (or vehicle frame) with mutual friction mutually between the rotating element that wheel (or transmission shaft) links to each other to stop the trend of the rotation or the rotation of wheel.Usually be provided with drg on the motor bike He on the battery-driven car, especially for the drg on the battery-driven car, the brake cable pillar is arranged on the vehicle frame, with drg be not integral structure, inconvenience during installation.Simultaneously, it is less to be used for the outside diameter that the shoe piece of the drg on the battery-driven car forms, and glancing impact is little with the frictional contact surface of brake wheel on the motor, causes friction effect poor, and service life is short, and braking effect is poor.

Summary of the invention:

The purpose of this utility model provides a kind of good braking effect, the drg of long service life.

The utility model is achieved in that

A kind of drg, inboard at the drum lid is provided with the shoe piece assembly, described shoe piece assembly is made up of the shoe piece of two symmetrically arranged semicircle cambers, the adjacent end of two shoe pieces by semi-circular recesses be fixed on the cylinder clamping that drum covers, be provided with cam between the other end of two shoe pieces, be provided with pull back spring between two shoe pieces with its tension, arranged outside at the drum lid has cam rocker arm assembly and brake cable pillar, the rocking arm of described cam rocker arm assembly is captiveed joint with cam by rotating shaft; be provided with the torsion spring that can make cam rotation between rocking arm and the drum lid; an end of torsion spring is stuck in drum and covers, and the other end is arranged on the rocking arm.

The outside diameter that two above-mentioned shoe pieces form is 129 ± 5mm.

Above-mentioned pull back spring has two, is suspended on respectively on two shoe pieces at two shoe piece two.

The outstanding compared to existing technology advantage of the utility model is:

1, brake cable pillar of the present utility model covers one with drum, and is easy for installation;

2, the outside diameter of two shoe pieces formation of the present utility model is big, and area of contact is big, and friction effect is good, good braking effect;

3, the utility model is applicable on the brake system of battery-driven car and motor bike.

Description of drawings:

Fig. 1 is the structural representation under the shoe piece free state of the present utility model, and arrow is represented the rotation direction of rocking arm among the figure;

Fig. 2 is that the A-A of Fig. 1 is to cutaway view;

Fig. 3 is that drum of the present utility model covers the leading flank scheme drawing;

Fig. 4 is the local stereoscopic-state figure that uses of the present utility model.

The specific embodiment:

With specific embodiment the utility model is further described below, referring to Fig. 1-4:

A kind of drg, cover 30 inboard at drum and be provided with the shoe piece assembly, described shoe piece assembly is made up of the shoe piece 10 of two symmetrically arranged semicircle cambers, the adjacent end of two shoe pieces 10 by semi-circular recesses be fixed on cylinder 40 clampings that drum covers, be provided with cam 20 between the other end of two shoe pieces 10, be provided with pull back spring 70 between two shoe pieces 10 with its tension, cover 30 arranged outside at drum cam rocker arm assembly and brake cable pillar 60 are arranged, the Rocker arm 50 of described cam rocker arm assembly is captiveed joint with cam 20 by rotating shaft; Rocker arm 50 and drum covers and be provided with the torsion spring 80 that cam 20 is rotated between 30; an end of torsion spring 80 is stuck in bulging the lid on 30, and the other end is arranged on the rocking arm 50.

The outside diameter that above-mentioned two shoe pieces 10 form is 129 ± 5mm.

Above-mentioned pull back spring 70 has two, is suspended on respectively on two shoe pieces 10 at two shoe piece two.

The utility model is installed in by its central shaft hole 301 on the motor shaft of motor 90 of battery-driven car, and be fixed on the chain stay support 100 of battery-driven car by the mounting hole 302 that is provided with at one end, brake cable 110 is passed brake cable pillar 60 and is connected with camshaft Rocker arm 50, when battery-driven car carries out brake operation, brake cable 110 drives 0 action of camshaft Rocker arm 5, thereby driving cam 20 rotates, the rotation of cam 20 makes two shoe pieces 10 strut around the cylinder 40 of an end, brake wheel friction on shoe piece 10 and the motor 90, and then realize brake.

The utility model brake cable pillar covers one with drum, and is easy for installation; The outside diameter of two shoe piece formation is big, and area of contact is big, and friction effect is good, good braking effect; Be applicable on the brake system of battery-driven car and motor bike.

The foregoing description only is one of preferred embodiment of the present utility model; be not to limit practical range of the present utility model with this; so: all equivalences of doing according to shape of the present utility model, structure, principle change, and all should be covered by within the protection domain of the present utility model.

Claims

1. drg, it is characterized in that: the inboard at the drum lid is provided with the shoe piece assembly, described shoe piece assembly is made up of the shoe piece of two symmetrically arranged semicircle cambers, the adjacent end of two shoe pieces by semi-circular recesses be fixed on the cylinder clamping that drum covers, be provided with cam between the other end of two shoe pieces, be provided with pull back spring between two shoe pieces with its tension, arranged outside at the drum lid has cam rocker arm assembly and brake cable pillar, the rocking arm of described cam rocker arm assembly is captiveed joint with cam by rotating shaft; be provided with the torsion spring that can make cam rotation between rocking arm and the drum lid; an end of torsion spring is stuck in drum and covers, and the other end is arranged on the rocking arm.

2. a kind of drg according to claim 1 is characterized in that: the outside diameter that described two shoe pieces form is 129 ± 5mm.

3. a kind of drg according to claim 1 is characterized in that: described pull back spring has two, is suspended on respectively on two shoe pieces at two shoe piece two.