CN2363958Y - Improved Bicycle Brake - Google Patents

Abstract

A bicycle brake with improved structure is composed of a pair of bilaterally symmetrical brake arms, a pair of brake cables fixed to both sides of a rim of bicycle, a brake block installed to the brake arms, a brake block seat pivoted to the brake arms in movable joint mode, and an elastic body pivoted to the brake block seat for buffering the clamping operation of brake block and rim.

Description

Improved Bicycle Brake

The utility model relates to a brake specially suitable for bicycles, in particular to a bicycle brake with an improved structure that brakes smoothly and can surely prevent rollover.

As shown in Figure 1, the commonly used bicycle brake structure is mainly provided with a pair of symmetrical brake arms (1), which are mounted on both sides of a bicycle rim (2) by pivots, and a The brake line (3) is used to accept the driving and control of a bicycle brake handle; its lower end is a brake part for the installation of a brake block (4) to perform clamping and braking operations on both sides of the rim (2) ; Because the rim (2) of the bicycle still maintains the inertia of continuing to rotate forward at the moment of brake operation, the sudden clamping action of the brake shoe (4) to the rim (2) on both sides often causes the accidental overturning event of the bicycle . In addition, because the bicycle brake is operated with the fixed pin (1a) at the lower end of the brake arm (1) as the center of the circle, as shown in Figure 2, the moving direction of the brake block (4) is The wheel rim (2) is rotated at an angle from the initial horizontal direction to the downward curved arc, so that the front end surface of the brake shoe (4) is not smoothly pressed against the end surface of the wheel rim (2), causing the brake shoe (4) The upper corner end of the clamping surface is partially stressed and wears quickly, which even affects the braking function of the bicycle in severe cases.

In view of this, the author of the present invention borrowed many years of experience in producing and marketing similar products, continuously devoted himself to research and experimentation, and finally developed a cost-effective utility model.

The main purpose of the utility model is to provide a bicycle brake with an improved structure, which can properly buffer the generated braking inertia during clamping, and prevent the bicycle from overturning during emergency braking.

Another object of the present invention is to provide a bicycle brake with an improved structure, the braking action of which can make the bicycle rims close in a balanced manner, so as to achieve a good braking operation effect.

The purpose of this utility model is achieved by the following technical solutions.

A bicycle brake with an improved structure, which includes a pair of left-right symmetrical brake arms, which are mounted on both sides of a bicycle rim by pivots, and a brake line is respectively fixed on the upper end to receive the driving force of a bicycle brake handle. Control; its lower end is a brake part for the installation of a brake block, so as to carry out the clamping and braking operation on both sides of the rim. A brake block seat is provided, and the end side of the brake block seat is fixedly connected with the brake block, and an appropriate distance is maintained between the end side of the brake block seat and the opposite end side of the brake arm pivot, and a shaft for the axial direction is pivoted at the position of the distance. The shock-absorbing elastic body is used for the synchronous side shift buffering of the clamping operation of the brake block and the rim, thereby achieving a good braking effect of the bicycle.

The purpose of this utility model can also be further realized by the following technical measures.

The aforementioned bicycle brake with improved structure is characterized in that two fixed lugs protrude left and right symmetrically on the back side of the brake shoe seat, and form a clamping space between the two fixing lugs. The width is larger than the side thickness of the brake arm for the installation of the elastic body, and a perforation is respectively recessed on the opposite end sides, and a pivot pin is used to connect and set the brake arm in series.

The aforementioned improved structure of the bicycle brake is characterized in that a positioning flange is protruded from the side of the brake arm relative to the top and bottom of the brake block seat of the pivot, and a through screw hole is recessed on the positioning flange. An adjusting bolt is screwed in the screw hole. It is provided for the blocking positioning adjustment of the upper and lower pivot angles of the brake block seat.

The aforementioned improved structure of the bicycle brake is characterized in that the brake block seat is connected to the brake arm side by a tension spring. For the downward spinning of the brake block seat.

Concrete structure of the present utility model is provided in detail by following embodiment and accompanying drawing thereof.

Fig. 1 is a schematic view of the structure of a conventional bicycle brake.

Fig. 2 is a schematic diagram of the action of a conventional brake when braking.

Fig. 3 is an exploded perspective view of a preferred embodiment of the present invention.

Fig. 4 is a combined plan view of a preferred embodiment of the utility model.

Fig. 5 is a schematic diagram of the action of the utility model during emergency braking.

Fig. 6 is a schematic diagram of the action of the utility model when braking smoothly.

In order to have a more specific understanding of the purpose, features and advantages of the present utility model, a preferred embodiment is hereby given in detail with accompanying drawings as follows:

First, please refer to Figures 3 and 4, a bicycle brake with an improved structure of the present invention, which includes a pair of symmetrical brake arms (10), a pair of brake block seats (20), two brake block (30), a pair of elastic bodies (40) and an extension spring (50), wherein

The brake arm (10) is pivotally mounted on both sides of a bicycle rim (2), and its upper end is respectively fixed with a brake wire (3) to accept the driving and control of a bicycle brake handle, and its lower end is respectively provided with a shaft Pivot part (11), for pivot setting is positioned at a vehicle frame (not shown in the figure), middle section then is the braking action area and on it recesses a shaft pivot hole (12), this shaft pivot hole (12) top A fixed column (13) is protruded on the end face of the high place, and a positioning flange (14) is extended horizontally on its side corresponding to the upper and lower positions of the shaft pivot hole (12). screw hole (15), and an adjusting bolt (16) is screwed in this screw hole (15).

The back side of the brake block seat (20) is left and right symmetrically provided with two fixed lugs (21) (22), and forms a clamping space (23) between the two fixed lugs (21) (22), The width (W) of the clamping space (23) is larger than the side thickness (t) of the brake arm, so that the fixed lug (21 ) to form an appropriate distance (s) between the brake arm (10), and the opposite end sides of the fixing lug (21) (22) are respectively recessed with a through hole (24), and a pivot pin ( 25) The tandem pivot is set in the pivot hole (12) of the brake arm (10), and a positioning slot hole (26) is longitudinally recessed on the front side end surface, and the top side corner end position of the fixing lug (22) is A small positioning hole (221) is established.

The two brake blocks (3) are the same as the conventional structure, the front end face is a brake part (31) that relatively clamps the bicycle rim (2) when the brake is operated, and the rear end has a fixed screw rod (32) , for respectively passing through the positioning slots (26) of the brake block seat (20) and cooperating with the fixing nut (33) for locking, so as to act with the brake arms (10) on both sides.

The pair of elastic bodies (40) is a hollow collar, which is made of shock-absorbing materials such as rubber, for being sleeved at the distance (s) between the fixed lug (21) and the brake arm (10), and It plays the role of shock absorption and buffering when the fixed lug (21) and the brake arm (10) are relatively axially compressed.

The pair of extension springs (50) are respectively used for the downward spinning operation of the brake block seat, and its top end (51) is fastened to the fixed column (13) positioned at the brake arm (10), while its bottom end (52) ) is threaded and fixed to the positioning hole (221) of the brake block seat (20).

By the above combination, the bicycle brake with the improved structure of the utility model is obtained. As shown in Figures 3 and 4, the two fixing lugs (21) (22) of the brake block seat (2) are used to straddle the brake block seat (2) respectively during assembly. The side of the brake arm (10) is thicker (t) on the left and right sides, and the pair of elastic bodies (40) are respectively embedded in the spacing (s) of its sides, and the pivot is set at the brake arm (10) via the pivot pin (25) in series. ) of the pivot hole (12), and finally the brake arm (10) and the brake block seat (20) are connected and fixed by the two ends of the tension spring (50), and the two brake blocks (30) are pressed After being placed on the brake block seat (20), the braking effect of stably clamping the bicycle rim can be achieved. As shown in Figure 5, when the bicycle is used for emergency braking operation, the two brake blocks (30) are driven by the inertial momentum of the bicycle in the same direction as the fixed brake block seat (20) due to the clamping relationship of the rim (2). And move forward a small buffer distance (d), so the fixed lug (21) on the brake block seat (20) instantly clamps the elastic body (40) whole forward. After the elastic body (40) compressed axially by the fixed lug (21) and the brake arm (10) is deformed, the force that would originally cause the bicycle to overturn is absorbed and buffered to ensure driving safety. Furthermore, as shown in Figure 3, since the adjustment bolts (16) vertically screwed on the positioning flange (14) of the brake arm (10) in the present utility model can be changed by adjusting the supporting point up and down to be suitable for various manufacturers. brand bicycle, to limit the up and down pivot deflection angle of the brake block seat (20), and with the cooperation of the tension spring (50) pulled longitudinally, the brake block (30) will be attached to the wheel The contact surface of the rim keeps the brake block (30) clamping the rim with a flat surface, thereby obtaining a more stable braking effect than the conventional structure, and avoiding the occurrence of unilateral wear of the brake block (30).

To sum up, the utility model can break through the bottleneck of the traditional brake, can effectively prevent the overturning of the emergency brake, and can indeed complete the relatively stable brake clamping action. Compared with the conventional structure, it has the practicability of enhanced efficacy.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

Claims (4)

1. A bicycle brake with an improved structure, which includes a pair of left-right symmetrical brake arms, which are pivoted on both sides of a bicycle rim, with a brake line fixed at its upper end and a brake wire at its lower end. The installation of a brake block is provided at the part, and it is characterized in that a brake block seat is pivoted on the brake arm in the form of a movable joint that pivots at an up and down angle, and the end side of the brake block seat is fixedly connected with the brake block. An appropriate distance is maintained between it and the opposite end side of the brake arm pivot, and an elastic body capable of axial compression and shock absorption is pivoted at the position of the distance. 2. The bicycle brake with improved structure according to claim 1, characterized in that two fixed lugs protrude left and right symmetrically on the back side of the brake shoe seat, and form a clamping space between the two fixed lugs. Space, the width of the clamping space is greater than the side thickness of the brake arm for the installation of the elastic body, and a perforation is recessed on the opposite end sides, and the pivot is set on the brake arm by a pivot pin in series. 3. The bicycle brake with improved structure according to claim 1, characterized in that, a positioning flange is protruding from the side of the brake arm relative to the top and bottom of the brake block seat of the pivot, and a concave is provided on the positioning flange. A through screw hole, and an adjusting bolt is screwed in the screw hole. 4. The bicycle brake with improved structure according to claim 1, characterized in that, the brake block seat and the brake arm side are connected by a tension spring.

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