CN2246096Y

CN2246096Y - Self-boosting hand brake for automobile

Info

Publication number: CN2246096Y
Application number: CN 96206485
Authority: CN
Inventors: 盛喜林; 王明升
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-03
Filing date: 1996-04-03
Publication date: 1997-01-29
Anticipated expiration: 2006-04-03

Abstract

The utility model discloses a self-boosting hand brake for automobiles. The utility model is characterized in that four supporting backs which are pairwise eudipleural on a chassis of the brake use a pin shaft fixed on the chassis as a fulcrum, and a cam is arranged between an upper and a lower supporting backs; the back curve radius of the supporting backs is diminished gradually from the cam end to the fulcrum, and included angles can be formed between the supporting backs and a brake drum. A horseshoe is limited to slide in a supporting back groove by a locating pin, and a friction sheet is fixed to the outer margin of the horseshoe. Return springs are connected between the horseshoe and the supporting backs, and between the supporting backs and the chassis, and the cam is connected with a crank arm on an operating lever.

Description

Automobile self energizing effort hand brake

The utility model relates to a kind of automobile self energizing effort hand brake, belongs to auto parts and components.

Existing automobile hand brake effect determines joystick application of force size by the driver fully, power is little stops incessantly, and power is big because the restriction of brake chassis boss can't realize maximum braking force, overexert and easily make the vehicle body lateral displacement, also increased working strength simultaneously to the driver; Auxiliary gear box output shaft leakage of oil meeting makes brake wheel be immersed in that friction coefficient reduces in the oil in addition.

The utility model is at the problems referred to above, provide a kind of handle laborsaving, brake efficiency is high, do not change primary car structure, automobile self energizing effort hand brake easy for installation.

Task of the present utility model is finished as follows: on this brake chassis, about in twos the symmetry 4 supporting backs be fulcrum with the bearing pin that is fixed on the chassis, be provided with cam between two supporting backs up and down, and by leaning on cam end to fulcrum, the back curve radius of supporting back reduces to form angle with brake wheel gradually, shoes is limited in the back-trough by locating dowel pin and slides, the shoes outer rim is fixed with friction lining, be connected with pull back spring between shoes and supporting back, supporting back and the chassis, cam is connected with connecting lever on the joystick.

The utility model has guaranteed the reliability of both forward and reverse directions rotation brake owing to adopt the symmetrical diagonal angle of shoes design plan; Again owing to adopt the back curve radius of supporting back to reduce gradually to form angle with brake wheel, when supporting back during by cam jack-up, this angle is more and more big along hand of rotation, this moment supporting back and brake wheel gap smaller, drive the slip shoes when brake wheel rotates and equally wedge angle along the circular arc voussoir of supporting back, more wedge tightlier produces self energizing effort, brake wheel can't be rotated, reach and brake purpose fully, come off and fracture or stolen car person when destroying meeting joystick, its self-locking device is in running order at once, implements emergency braking, not only avoid accident to take place, and it is stolen that vehicle is removed from, as with the supporting use of patented technology " coded lock hand brake joystick ", perfectly safe especially, equal to have added double insurance, this technology also can be used for other mechanical braking.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the utility model integral structure figure

With reference to accompanying drawing 1, on this brake chassis [1], about in twos the symmetry 4 supporting backs [2] be fulcrum with the bearing pin [3] that is fixed on the chassis [1], be provided with cam [4] between two supporting backs up and down, and by leaning on cam end to fulcrum, the back curve radius of supporting back [2] reduces to form angle with brake wheel [5] gradually, shoes [6] is limited in the back-trough by locating dowel pin [8] and slides, shoes [6] outer rim is fixed with friction lining [7], be connected with pull back spring [9] between shoes [6] and supporting back [2], supporting back [2] and chassis [1], cam [4] is connected with connecting lever on the joystick.

Claims

1. automobile self energizing effort hand brake, it is by brake wheel [5], friction lining [7] constitutes, it is characterized in that: on this brake chassis [1], about in twos the symmetry 4 supporting backs [2] be fulcrum with the bearing pin [3] that is fixed on the chassis [1], be provided with cam [4] between two supporting backs up and down, and by leaning on cam end to fulcrum, the back curve radius of supporting back [2] reduces to form angle with brake wheel [5] gradually, shoes [6] is limited in the back-trough by locating dowel pin [8] and slides, shoes [6] outer rim is fixed with friction lining [7], shoes [6] and supporting back [2], be connected with pull back spring [9] between supporting back [2] and chassis [1], cam [4] is connected with connecting lever on the joystick.