CN2093141U

CN2093141U - Double control compound type brake for bicycle

Info

Publication number: CN2093141U
Application number: CN 91211452
Authority: CN
Inventors: 秦培德
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-03
Filing date: 1991-04-03
Publication date: 1992-01-15

Abstract

The utility model relates to a compound braking device for a bicycle with double control, which is additionally provided with a set of brake-expanding mechanisms in the braking wheels of the contracting brakes of a common bicycle. The contracting brakes and the expanding brakes share one braking wheel and are respectively connected with each other through pulling ribs and left and right brake handles on handle bars. Two sets of brakes can brake a rear wheel and has the advantages of reasonableness, individual control, independent function in which the other set of brakes can safely work if one set of brakes are out of order, combined installation, small space occupation, big braking force, reliable and steady operation, high efficiency, and obvious high safety performance of the bicycle. The utility model has the advantages of closed brake, self organizing system, long service life, beautiful appearance and no abrasion on a bicycle body in working.

Description

Double Control compound type brake for bicycle

The utility model relates to a kind of cycle brake, and this drg also can be used for the braking of other vehicles and other axis of revolutions.

All be provided with drg on the daily seen bicycle front and back wheel.Drg (hereinafter to be referred as " lock ") commonly used has common tension lock, pincerlike lock, band-type brake and expanding brake etc.Think that after stressed analysis during bicycle work, the weight major part of human body or goods is supported by trailing wheel, so the brake efficiency of rear-wheel brake obviously is better than front wheel brake, play leading brake action, front wheel brake then only plays the auxiliary braking effect, also affects the general situation even remove front wheel brake.Moreover, front-wheel can be with respect to the vehicle frame left-right rotation, braking effect is not good, especially during descending, when the speed of a motor vehicle is very fast and when sleety weather is ridden, dare not use front wheel brake separately, even front wheel brake power is when being slightly larger than trailing wheel, the possibility of turning over or falling down before all having, this very easily causes traffic accident on the road of crowded traffic.In riding, front wheel brake is malfunctioning, carefully uses rear-wheel brake, can also keep safety, but if rear-wheel brake is malfunctioning, the speed of a motor vehicle is fast again, and that just can only have been left it to chance.In view of this, not as removing front wheel brake, manage the brake system of two rim brakes about on the handlebar all is assembled on the trailing wheel and more suited people's will.Again from deceleration and stopping performance; common tension lock and pincerlike lock all are to reach the braking purpose by the friction that the brake rubber block that rubber is made is pressed on the wheel rim to be produced, and it is simple in structure, reliable effect; but because wheel rim exists radially and face runout; (especially used car) glancing impact, the feel shakiness has impulsive force; when sleety weather is ridden; rainwater with avenged into lubricant, friction descends, it is unreliable to brake; more regrettably; since be the open type braking, the silt particle upper body is for a long time have more than is needed; just large stretch of wearing and tearing of beautiful electrodeposited coating and coming off on the new Wheel; not only influence the outward appearance of car body, also destroyed the protective cover of wheel rim, caused corrosion; so the stop mechanism of this backwardness has been abandoned by many in recent years producers; and adopted braking force big, and the band-type brake and the expanding brake of reliable operation and sealing braking, very desirable; but how all to be combined on the rear wheel brake system of left and right sides rim brake on the handlebar; separate again, do not disturb the example of but not seing before mutually.

The purpose of this utility model designs a kind of two control combined type cycle brake exactly, the stop mechanism that right-hand man's sneek is controlled is respectively concentrated and is assembled on the hind axle, and it is separate, do not disturb mutually, do not repeat again to take up room, when obviously improving brake efficiency and reliability, increase the car load safety factor, guarantee traffic safety.

Solution is to reinstall one group of fixed type expanding brake system in the brake wheel of ordinary bicycle trailing wheel band-type brake, and band-type brake and expanding brake effect are independent and respectively by two rim brake handle controls on the handlebar, two overlap the shared brake wheel of stop mechanism and seal bootrs.

Embodiment below in conjunction with accompanying drawing provides specifically describes its structure and effect.

Fig. 1 is the utility model External view;

Fig. 2 is its cutaway view;

Fig. 3 is its A-A cutaway view.

As shown in Figure 1, its outward appearance is similar with the ordinary bicycle band-type brake.

Find out by Fig. 2 and Fig. 3, this is a kind of two control combined type cycle brake, its main body is that the common band-type brake on the vehicle frame constitutes behind the bicycle by being contained in, comprise seal bootr (3), brake wheel (6), steel band (1), friction tape (13) and rocking arm (4), it is characterized in that, also being equipped with in brake wheel (6) can be around the brake shoe brake cheek up and down (2) of axle (7) rotation, be fixed with Friction disk (12) on its cylindrical respectively, extension spring (8) is housed between the brake shoe brake cheek up and down, cam (9) is loaded on the seal bootr (3), and be supported in up and down between the brake shoe brake cheek, cam (9) fuses with rocking arm (11), constituted one group of complete expanding brake system, itself and a shared brake wheel of band-type brake system (6) and a seal bootr (3), and link to each other with right-hand man's sneek on the handlebar with (5) by lacing wire (10) respectively.

Above-mentioned band-type brake systemic effect principle is known, needn't carefully state, list just makes up the expanding brake principle of work and is summarized as follows: when a certain rim brake handle on the handlebar affects lacing wire (10), pulling rocking arm (11) rotates counterclockwise, and cam (9) rotates synchronously, then overcomes the pulling force of extension spring (8), an end of brake shoe brake cheek is up and down strutted, brake shoe brake cheek respectively changes an angle around axle (7) up and down, to Friction disk (12) on its cylindrical is pressed on the inner rim of brake wheel (6) of band-type brake, reaches the braking purpose.After lacing wire (10) the mistake power, then extension spring (8) brake shoe brake cheek up and down retracts original position, thereby loses braking force.Because expanding brake is contained within the band-type brake, and a shared brake wheel and a seal bootr, thus simple and compact for structure, not repeating to take up room, and saved raw MAT'L, two groups of brake system actions are independent separately, do not disturb mutually, and controlled separately by two rim brake handles.Because adopt the sealing stop mechanism, dustproof effect is good, reduces wear.In addition, the stop mechanism self-organizing system can not damage the car body any part in the work, has improved the life-span of bicycle.This mechanism's braking force is big, reliable operation, steadily, and the efficient height, even wherein a group system is malfunctioning, another group system still can normal operation, guarantees safety.Moreover, owing to adopted fixed type expanding brake mechanism, prevented " locking axle " brake phenomenon, reduced impulsive force, not only the people feels comfortable, and car body is also suffered a loss less.

Claims

1, a kind of two control combined type cycle brake, its main body is that the common band-type brake on the vehicle frame constitutes behind the bicycle by being contained in, comprise seal bootr (3), brake wheel (6), steel band (1), friction tape (13) and rocking arm (4), it is characterized in that, also being equipped with in brake wheel (6) can be around the brake shoe brake cheek up and down (2) of axle (7) rotation, be fixed with Friction disk (12) on its cylindrical respectively, extension spring (8) is housed between the brake shoe brake cheek up and down, cam (9) is loaded on the seal bootr (3), and be supported in up and down between the brake shoe brake cheek, cam (9) fuses with rocking arm (11), constituted one group of complete expanding brake system, itself and a shared brake wheel of band-type brake system (6) and a seal bootr (3), and link to each other with right-hand man's sneek on the handlebar with (5) by lacing wire (10) respectively.