CN2244006Y - Two-way force increasing and reducing disk parking brake - Google Patents

Abstract

The utility model relates to a parking brake with a two-way force increasing and reducing disk type. The lower end of a vertical arm is connected with a fixed brake shoe and a draw rod arm through pin shafts, a longitudinal draw rod is fixed by the middle part of the draw rod arm, and a floating brake shoe is fixed by the back end of the longitudinal draw rod. A control draw rod is fixed by the lower part of the draw rod arm, and the back end of the control draw rod is sheathed with a locating arm which is fixed to the lower part of a brake casing by a pin shaft. An opening is arranged at the outer edge of a flat plate at the tail part of the floating brake shoe, and a dummy club is arranged at the upper part of the locating arm. The dummy club is arranged in the opening, and regulating springs are arranged above and below the flat plate. The utility model can generate reducing force for braking when an automobile is started on a slope, and the automobile can be started without loosening a brake handle, so that the problem of difficult starting operation on slopes is solved.

Description

Two-way reinforcement, subtract power disc type Parking Brake

The utility model belongs to motor vehicle parking brake.

At present, most light-duty series vehicles all adopt the drum-type Parking Brake, and during Parking, automobile recurrence car goes up a slope this kind drg or the starting reversing is gone up a slope on the slope, all must step on pedal of clutch skillfully cooperates with the handle that gets off the brakes, could rise safely and send a car, cycling start is that chaufeur behaviour does difficult point always on the slope, particularly starts to walk on the abrupt slope, its difficulty is bigger, unskilled slightly engine off will take place, slip the slope, cause the accident.

The purpose of this utility model is to provide a kind of just Parking Brake of energy cycling start of handle that do not get off the brakes, and guarantees the upward safety of starting of slope.

The purpose of this utility model realizes by technical scheme shown in the drawings.The utility model comprises the brake casing 4 that is connected with the change speed gear box rear end, brake disc 13 and brake shoe brake cheek, the brake disc front is connected with change speed gear box two aixs cylinder edge, the brake disc back is connected with transmission shaft, the utility model is provided with a upright arm 2 at the brake casing internal upper part, upright arm lower end is connected and fixed brake shoe brake cheek 3 by bearing pin 1, also be with the termination of tie rod arm 16 on this bearing pin, the middle part of tie rod arm is the front end of longitudinal tie 15 fixedly, the rear end of longitudinal tie is floating brake shoe 12 fixedly, the following termination brake flexible axle of tie rod arm, the front end of lever arm lower fixed control pull bar 14, the rear end of control pull rod is with a radius arm 10, the both sides of the rear end radius arm of pull bar are with balance spring 11, radius arm is fixed on the brake casing bottom 9 by a bearing pin 8, radius arm can rotate around this bearing pin, the floating brake shoe afterbody is a tabular, dull and stereotyped 7 outward flanges have an opening 6, a boss 5 is arranged at radius arm top, boss places in the opening, dull and stereotyped middle part has bar hole, dowel bolt 19 is by passing in the hole, on flat board, have regulating spring 17 to be enclosed within on the nut of location below, regulating spring is provided with locating bush 18 outward.

Technique scheme makes and the utlity model has the slope and go up to stop and to produce the brake reinforcement, and cycling start can produce to brake and subtract the function of power on the slope on, and cycling start can produce to brake and subtract power and make the utility model not get off the brakes handle with regard to the energy cycling start on the slope.Its principle of work is as follows: the upward slope Parking, when flexible axle is braked in pulling forward, tie rod arm reach also drives that fixedly brake shoe brake cheek and floating brake shoe are pressed to brake disc, produce Parking moment, make radius arm rotate an angle simultaneously, the sliding force that produces that stops on the slope acts on the brake disc by transmission shaft, and the exercising result of brake disc and shoe plate makes longitudinal tie downward-sloping, more spur brake shoe brake cheek and press to brake disc, thereby produced the brake reinforcement; During cycling start, brake disc drives floating brake shoe and moves up on the slope, and longitudinal tie is by the downward-sloping level that becomes, and radius arm does not reset, thereby has reduced brake torque, and the handle that do not get off the brakes just can rise and send a car, and handle again gets off the brakes after the cycling start.On the slope, move backward in like manner after the Parking on the slope.Torque Control required when the follow-up action of radius arm boss and dull and stereotyped opening is cycling start is controlled floating brake shoe simultaneously and is crossed with brake disc and subtract the force and become braking state again in the scope that can start to walk.The utility model novel structure, simple does not need change speed gear box and transmission shaft are done any improvement, has accomplished the assembly exchange, implement very convenient, structure of the present utility model is applicable to various vehicles, has solved sloping this global problem of cycling start of going up, and has guaranteed the sloping safety that goes up cycling start.

Accompanying drawing 1 is a lateral plan of the present utility model;

Accompanying drawing 2 is front elevation of the present utility model (the headstock direction is preceding);

Accompanying drawing 3 is the utility model bottom back view

Provide embodiment of the present utility model below in conjunction with accompanying drawing:

25 millimeters of disc thickness, 240 millimeters of diameters, thick 6 millimeters of forward and backward brake strap, 122 millimeters of shoe plate radiuses, 90 ° of cornerites do not have specific (special) requirements to material.Drg is bolted on the change speed gear box rear housing with four.Present embodiment is applicable to serial vehicle below three tons, and the requirement that the connecting bore position size on its housing and the brake disc adapts to the connection dimension of different automobile types change speed gear box connecting bore position gets final product.

Claims (1)

1. two-way reinforcement, subtract power disc type Parking Brake, comprise the brake casing that is connected with the change speed gear box rear end, brake disc and brake shoe brake cheek, the brake disc front is connected with change speed gear box two aixs cylinder edge, the brake disc back is connected with transmission shaft, it is characterized in that being provided with a upright arm at the brake casing internal upper part, upright arm lower end is connected and fixed brake shoe brake cheek by bearing pin, also be with the termination of tie rod arm on this bearing pin, the middle part of tie rod arm is the front end of longitudinal tie fixedly, the rear end of longitudinal tie is floating brake shoe fixedly, the following termination brake flexible axle of tie rod arm, the front end of lever arm lower fixed control pull bar, the rear end of control pull rod is with a radius arm, the both sides of the rear end radius arm of pull bar are with balance spring, radius arm is fixed on the brake casing bottom by a bearing pin, radius arm can rotate around this bearing pin, the floating brake shoe afterbody is a tabular, dull and stereotyped outward flange has an opening, a boss is arranged at radius arm top, boss places in the opening, and dull and stereotyped middle part has bar hole, and dowel bolt is by passing in the hole, on flat board, have regulating spring to be enclosed within on the nut of location below, regulating spring is provided with locating bush outward.

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