JPH0720432U - Bicycle brake - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] Increase the operating force by the servo effect, smooth deceleration performance according to the operating force, and prevent noise generation during braking. [Constitution] One end of the lining band 8 has an L-shaped lever 2
In a bicycle brake in which one end is connected to the other end and the other end is supported by the cover, and the drum pulley 11 is wound and pressed inwardly for braking, the receiving member 4 is swingably supported by the supporting shaft 5 at the tip. 6, a base end serving as a fulcrum is pivotally supported on the cover, and the cover is connected to the cover so that the cover side support end of the lining band contacts the drum pulley.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bicycle brake, and more particularly to a rear brake used for a rear wheel.

[0002]

[Prior art]

 The band brake used for conventional bicycles is a lining band that has a lining integrally attached to the inner surface of a steel strip bent in an arc shape, one end of which is connected to an L-shaped lever, and the other end is fixed to a cover. It is widely practiced to operate the lever and tighten the drum pulley.

[0003]

[Problems to be solved by the device]

 In the bicycle brake described in the above-mentioned conventional technique, even if the lining band is pulled slightly, it comes into full contact with the drum pulley for sudden braking, and it is generally difficult to adjust the brake during traveling.

Further, since one end of the lining band is fixed to the cover, self-excited vibration is generated and an unpleasant sound is generated during braking.

[0005]

[Means for Solving Problems]

 One end of the lining band is connected to one end of the L-shaped lever, the other end is supported by the cover, and in a bicycle brake in which the drum pulley is wound and pressure-contacted, the tip is received by a spindle. The pivotally supported link is pivotally supported on the cover at its base end, and the cover is connected to the cover so that the cover side support end of the lining band contacts the drum pulley. It is a feature of bicycle brakes.

[0006]

[Advantageous Effects] Since the present invention is configured as described above, when the lining band comes into contact with the drum pulley during braking and receives the rotational force due to the frictional force, and the moving force in the rotational direction is received, the moving force is received. This causes the link to rotate and acts as a force that presses part of the lining band supported by the link, especially against the drum pulley, and significantly increases the overall damping effect.

When the link is associated with an adjusting spring of moderate strength, the lining band tightens the drum pulley in proportion to the operating input. Therefore, the feeling of operation of the brake lever of a bicycle rider and the feeling of deceleration of the bicycle match, and the braking force can be adjusted.

[0008]

【Example】

 The present invention will be described with reference to the drawings which are an example of an embodiment. Reference numeral 1 denotes a brake cover, which supports an L-shaped lever 2 at its front part by a support shaft 3 and a receiving end 4 at a tip end thereof which supports a support shaft 5. The base end of the link 6 pivotally supported by is supported by the brake cover 1 by the support shaft 7.

Reference numeral 8 denotes a lining band, and the lining 10 is integrally attached to the inner surface of a strip steel plate 9 having an appropriate thickness.

The brake cover 1 is provided with a mounting hole 12 through which an axle is inserted. After penetrating an axle (not shown), the cover 1 is tightened from the front and back, and the front portion is attached to the bicycle frame by a band 13 (shown in the figure). Not).

The L-shaped lever 2 is connected to an operation lever on a handle (not shown) via a wire or a connecting rod, and the operation thereof tightens the drum pulley 11 with the lining band 8.

Reference numerals 14 a and 14 b are adjusting springs for adjusting the operation of the link 6. The adjusting springs 14a and 14b also serve as return springs for the lining band 8.

[0013]

【effect】

 Since this invention bicycle brake is as described above, by operating the link, it is possible to enhance the operating force by the servo effect utilizing the rotational force of the drum pulley to apply braking, and obtain a smooth decelerating property. It is possible.

When the return spring is associated with the link, it is possible to prevent sudden contact between the lining band and the drum-pulley and to adjust the braking force to a desired one, which is not a so-called cut-and-brake.

Further, since the force acting on the lining band is not uniform, self-excited vibration is less likely to occur, and resonance is eliminated, so that a ringing noise can be prevented and an uncomfortable braking noise can be prevented.

[Brief description of drawings]

FIG. 1 is an inner side view of a bicycle brake of the present invention.

FIG. 2 is also an outer side view of the bicycle brake of the present invention.

FIG. 3 is a partial side view showing a second embodiment of the adjusting spring.

[Explanation of symbols]

 1 Brake cover 2 L-type lever 3 Support shaft 4 Receiving 5 Support shaft 6 Link 7 Support shaft 8 Lining band 9 Belt steel plate 10 Lining 11 Drum pulley 12 Mounting hole 13 Band 14a Adjustment spring 14b Adjustment spring

Claims (3)

[Scope of utility model registration request] 1. A bicycle brake in which one end of a lining band is connected to one end of an L-shaped lever and the other end is supported by a cover, and a drum pulley is wound by press-contacting the inside of the bicycle brake to brake the bicycle, and a receiving end is provided at a tip of the brake. A link pivotally supported by a support shaft is pivotally supported on the cover at its base end, which is a fulcrum, and is connected to the receiving plate so that the cover side supporting end of the lining band contacts the drum pulley. A brake for bicycles that is characterized. 2. A link having a receiving end swingably supported by a support shaft, wherein a base end serving as a fulcrum of the link is located outside the outer peripheral surface of the drum pulley, and the receiving end is centered on the fulcrum. 2. The working surface is pivotally supported so as to rotate inside the pulley, and the cover-side bearing end of the lining band is connected to the receiving metal so as to contact the drum pulley.
Bicycle brake. 3. The bicycle brake according to claim 1, wherein an adjusting spring is associated with the link.