DE202014008869U1 - Handbrake handle which is coaxially rotatably mounted on the bicycle handlebar and rotatably locked - Google Patents

Abstract

Handbrake handle, which is coaxially rotatably mounted on the bicycle handlebar (1) and locked against a fixed handle part (12). A Bowden cable (3) connected to the rotatable hand brake handle (6), which is connected at its other end to a pulling piston (14) which is located in a hydraulic master cylinder (15).

Description

Subject Matter:

Handbrake handle which is coaxially rotatably mounted on the bicycle handlebar and rotatably locked. A Bowden cable connected to the rotary brake handle is connected at its end to a pulling piston, which is located in a master cylinder and converts the mechanical Bowden cable movement by means of fluids in hydraulic brake pressure.

Summary:

The hitherto technically known hydraulic bicycle brakes are operated via a handbrake lever mounted on the handlebar. By pulling the hand brake lever, the pending brake system is set by means of a piston under hydraulic pressure in the hydraulic cylinder. This pressure causes the compression of the connected brake system to achieve a braking performance.

Object of the invention:

The invention has for its object to provide a rotatable handle which is connected to a Bowden cable. The rotation of the handle causes the connected Bowden cable to move forward or backward.

The Bowden cable is connected at its respective free end with a tension piston. This piston is located in a master cylinder, which is filled with hydraulic fluid. As a result, the piston has the function of a tension piston. It converts the Bowden cable movement into a stroke, inside the master cylinder. He is thus able to convert the mechanical tensile force in hydraulic traction, so that it is converted into braking force via a hydraulic slave cylinder depending on the design of the brake.

It should be created a brake system for bicycles, which is not activated by a technically known handbrake lever, but by the rotation of the handle. Furthermore, the brake system is to convert mechanical tensile or rotational force into hydraulic braking force.

Solution of the task:

The invention task is to be solved advantageously by a brake system is provided without hand brake lever, which builds mechanical or hydraulic braking force by turning a replacement coaxial handlebar grip handle and is compatible with all technically known braking systems in the function.

In the following description, u. a. on the basis of drawings not to scale the illustrated embodiments of the invention explained in more detail.

Description:

The present invention relates to a handbrake handle, which is coaxially rotatably mounted on the bicycle handlebar and locked by a guide rotary handle. A connected to the rotary brake Bowden cable, which is guided by a rotary handle with ball bearings, is connected at its end by means of a clamping screw with a tension piston. This is located in a master cylinder with filling or bleeding screw.

Advantageously, the tension piston has an exemplary spring return. The master cylinder also has a fluid connection with the slave cylinder with integrated slave piston. Alternatively, the slave piston may have a spring return.

According to the design of the handbrake handle is designed in an ergonomic ergonomic handle design. The Bowden cable connected to the tension piston by means of clamping screw is performed by the intended opening of the locking part, which is located on the handlebar immovable and connected to a nipple with the twist grip part.

Due to the rotation of the rotary handle part, the Bowden cable, which is fluid-sealed and guided with respect to the master cylinder cover, is forwarded or returned with its associated pulling piston in its master cylinder filled with fluids. The built-up by the stroke hydraulic pressure force is passed through the connection channel described to use this depending on the technical brake design as a hydraulic braking force.

The slave cylinder connected via the connecting channel contains the slave piston, which, depending on the working design, is connected to a piston rod on one side of the piston.

If the slave cylinder is to perform a pulling movement with the piston rod sealed by the cylinder cover, the piston rod is mounted above the piston, as indicated in the drawing.

Alternatively, the slave piston is capable of performing an urging movement with the piston rod fluidly sealed by the cylinder cover. In this embodiment, the piston rod is mounted on the underside of the piston so that the piston rod can perform a work pushing outside of the slave cylinder. The Exemplary recorded return spring is located on the upper side of the slave piston.

The description explains another exemplary embodiment in which the respective slave piston is positioned separately from the master piston via a fluid conduit designed in length, as required.

The description lists exemplary embodiments. Not all technically possible applications can be listed in their function.

For this reason, the inventive idea includes all similar technical embodiments, which convert a generated by means of hand rotary twisting torque mechanical Bowden cable force via a connected piston within a master cylinder in hydraulic pressure, or braking force.

Drawings:

A respective embodiment of the invention will be described in the following attached drawings.

1
Representation of the rotary brake handle according to the invention shows the handlebar ( 1 ) on which the rotary handle guides ( 5 ) with their ball bearing guides ( 7 ) to allow easy coaxial rotation of the handle part ( 6 ) to ensure. At the same time the locking ring ( 11 ) with its clamping screw ( 8th ) a demarcation with respect to the stationary handle part ( 12 ). In the recording, the Bowden cable ( 3 ) through the adjusting screw ( 4 ) and with a clamping screw ( 8th ) on the nipple ( 4 ) arrested. This nipple ( 4 ) becomes a guide ( 9 ) on the twist grip part ( 6 ). The pending Bowden cable ( 3 ) is passed through the guide hole ( 9 ) on the rotary handle guide ( 5 ) to connect via the Bowden cable sheath a connection by means of a clamping screw ( 14 ) with the pulling piston ( 14 ) in the invisible master cylinder. It is in a pending drawing the twist grip part ( 5 ), as well as the connected Bowden cable ( 3 ) with the fixed handle part ( 12 ) combined recorded.

2
Representation of the rotary brake handle according to the invention in this recording are on the handlebar ( 1 ) each a rotary brake handle ( 6 . 12 ) arranged for the front or rear brake. The with the Bowden cable ( 3 ) associated rotary handle parts ( 6 ) are opposite the fixed handle parts ( 12 ) locked coaxially. The respective Bowden cables ( 3 ) are connected to the connected encoder cylinders ( 15 ), where it passes through the Bowdenzugbefestigungsmutter ( 13 ) sealed in the master cylinder ( 15 ) to lead. A clamping screw ( 14 ) sets the lock with the respective master piston ( 14 In this recording, the hydraulic fluid through the fluid channel ( 16 ) in the respectively connected slave cylinder ( 17 ). The pictorial representation shows the fluid admission of the master piston ( 18 ) in its master cylinder ( 17 ), where the master piston ( 18 ) with its connected piston rod ( 19 ) in the cylinder ( 17 ) into it. This reduces the respective brake lever distance relative to the slave cylinder attachment ( 20 ).

3
Representation of the master cylinder according to the invention ( 15 ) with piston ( 14 ), which by a clamping screw ( 14 ) connected Bowden cable ( 3 ). The master cylinder ( 15 ) is exemplary with a filling or venting screw ( 21 ) designed. The slave cylinder ( 17 ) with his piston ( 18 ) is via a fluid communication channel ( 23 ) with the master cylinder ( 15 ) connected. The slave piston ( 18 ) carries the connected piston rod ( 19 ), fluid sealed by the slave cylinder cover ( 24 ) to do work as required. Exemplary are the two pistons ( 14 . 18 ) with a spring return ( 22 ) recorded.

It is the size ratios of the individual components 1 . 2 , and 3 not drawn to scale. They serve only the technical representation of the subject invention.

LIST OF REFERENCE NUMBERS

1

handlebars

2

clamping ring

3

Bowden

4

Bowden cable adjusting screw with passage for rotary handle guidance

5

Twist grip guide

6

Twist grip part

7

Ball bearing on swivel handle

8th

Clamping screw for Bowden cable with insertion nipple for locking

9

Bowden cable guide on twist grip part

10

Through hole for locking ring attachment

11

Locking ring for rotary handle part with clamping screw

12

Handle fixed

13

Bowden cable mounting nut on master cylinder

14

Master piston with clamping screw

15

Master cylinder

16

Hydraulic fluid channel for slave cylinder

17

slave cylinder

18

Slave pressure piston

19

piston rod

20

Slave cylinder mounting

21

Filling bleeding screw

22

return spring

23

Fluid connection sender slave cylinder

24

Master-slave cylinder cover

Claims (6)

Handbrake handle, which coaxially rotatable on the bicycle handlebar ( 1 ) and against a fixed handle part ( 12 ) is locked. One with the rotatable hand brake handle ( 6 ) connected Bowden cable ( 3 ), which at its other end with a Zugkolben ( 14 ), which is located in a hydraulic master cylinder ( 15 ) is connected. Hand brake handle according to claim 1, characterized in that the mechanical rotational force is converted in hybrid design in hydraulic pressure force to use it as a braking force. Handbrake handle according to claim 1 and 2, characterized in that the rotary brake handle ( 6 ) over the connected Bowden cable ( 3 ) a piston ( 14 ) in Zugkolbenanordnung as master piston ( 14 ) in the master cylinder ( 15 ) emotional. Handbrake handle according to claim 1, 2 and 3, characterized in that the with the rotary handle ( 6 ) connected Bowden cable ( 3 ) variable depending on the position of the pulling piston ( 14 ) is designed in length to serve as master piston ( 14 ) in the master cylinder ( 15 ) compatible to use all hydraulically known brakes. The twist grip part ( 6 ) can be used with a ball bearing ( 7 ) or other low-friction bearings. Handbrake handle according to claim 1, 2, 3 and 4 characterized in that donor ( 15 ) and slave cylinder ( 17 ) with their pistons, both in a housing together, as well as separately with their own housing ( 15 . 17 ) are positioned. Handbrake handle according to claim 1, 2, 3, 4 and 5 characterized in that donor ( 15 ) and slave cylinder ( 17 ) via a common connection channel ( 23 ), or alternatively via a flexible fluid supply line ( 16 ) with each other.

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