DD275022A1 - Rim brakes for bikes, in particular racing bikes - Google Patents

Rim brakes for bikes, in particular racing bikes Download PDF

Info

Publication number
DD275022A1
DD275022A1 DD31913388A DD31913388A DD275022A1 DD 275022 A1 DD275022 A1 DD 275022A1 DD 31913388 A DD31913388 A DD 31913388A DD 31913388 A DD31913388 A DD 31913388A DD 275022 A1 DD275022 A1 DD 275022A1
Authority
DD
German Democratic Republic
Prior art keywords
brake
rim
rotation
axis
bicycles
Prior art date
Application number
DD31913388A
Other languages
German (de)
Inventor
Wolfgang Geissler
Original Assignee
Textima Veb K
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Textima Veb K filed Critical Textima Veb K
Priority to DD31913388A priority Critical patent/DD275022A1/en
Publication of DD275022A1 publication Critical patent/DD275022A1/en

Links

Abstract

Rim brake for bicycles, especially racing bicycles. The invention relates to a rim brake for bicycles, especially racing bicycles, where particular importance is placed on low resistance to flow, z. B. in individual time trial competitions. The invention has for its object to provide a rim brake, which allows easy installation, wherein the biasing of the spring is simple and adjustable. This is achieved by the rim brake, which consists of two brake levers which are mounted on a rotation axis, wherein in each brake lever is a torsion spring, which is supported with one leg in the brake lever and the other leg in a stationary component, this Component is a rotatable and lockable connected to the axis of rotation clamping cap. Fig. 3

Description

For this 3 pages drawings
Field of application of the invention
The invention relates to a rim brake for bicycles, especially racing bicycles, where particular value is placed on low flow resistance, e.g. in individual time driving competitions.
Characteristics of the known state de, technology
Rim brakes, arranged behind the front fork, are already known in various forms.
In known solutions, the brake levers are mounted on axes of rotation which extend on a fixed frame part, such as a frame. Fork, are located. The brake levers have an internal torsion spring, with its one leg in a fixed frame part, z. B.
Fork, and with the other leg engages the brake lever.
This means that during assembly, the spring is inserted with a particularly long leg in the fork, biased with the brake lever and must be pushed in the biased state on the axis of rotation.
This process is associated with difficulties because the spring deforms during pretensioning; This hinders the assembly and makes it difficult.
In addition, it is not possible to change the restoring force of the spring.
In addition, a universal use of these rim brakes is not possible because it can only be mounted at a certain point.
Object of the invention
The aim of the invention is to ensure a universal application and a quick mounting of the rim brake.
Explanation of the essence of the invention
The invention is based on the object of providing a rim brake for bicycles, in particular racing bicycles, which permits simple assembly, whereby the pretensioning of the spring is simple and adjustable.
This object is achieved according to the invention in a rim brake, which consists of two brake levers which are mounted on a rotation axis, wherein in each brake lever is a torsion spring which is supported with a leg in the brake lever and the other leg in a stationary component in that the stationary component is a clamping cap that is rotatable and lockable with the axis of rotation.
In addition, the axes of rotation of the brake lever are mounted on a releasably connected to the fork base plate. Furthermore, it is possible that the rotation axis and the clamping cap have interengaging projections and recesses.
Due to this design of the rim brake, it is possible to use them universally, easy and quick to assemble and also to change the restoring force on the brake lever.
embodiment
The invention will be explained in more detail with reference to an embodiment. The drawings show:
Fig. 1: the arrangement of the Fig brake at the rear and front fork in the side view Fig. 2: the arrangement of the rim brake at the rear of the front fork seen in the direction of travel Figure 3: a brake lever bearing in section Figure 4: a clamping cap
Fig. 5: a form-fitting secured clamping cap Fig ti: possibilities of positive connection
As can be seen in Fig. 1, the rim brake is mounted to the rear of the front fork, with a mounting on
usual place as a rear wheel brake is possible.
To use the rim brake on racing bicycles of various types universally, a base plate 1 is provided, which adapts to the distance between the mounting hole of the fork and the axes of rotation. The base plate 1 is by means of
Stud bolts 13 attached to the fork 16. On the base plate 1 are located at a certain distance from each other
Rotary axes 2; 3, which for receiving the brake lever 4; 5 serve. The brake levers 4; 5 are socket-shaped inside
ausge¬ in this bush-shaped inner part is a torsion spring 6, with its one leg in the
corresponding bore 14 of the brake lever 4; 5 and with the other leg in the bore 15 of a on the axis end of the axes of rotation 2; 3 rotatable and lockable mounted clamping cap 7 engages, with its collar the second bearing point for the brake lever 4; 5 forms.
To a certain restoring force on the brake lever 4; 5 to reach the clamping cap 7 is rotated by a certain amount on the axis. After reaching a certain, previously determined, favorable angle of rotation z. B. 45 ° -90 ° is the
Clamping cap 7 tightened against the survey located at this point on the front side of the axle by means of a Zylinderschraubo 8 with interposed spring ring 12. Thus, the torsion spring 6 remains in the pre-tensioned state.
As a result, the fixation of the desired spring preload, i. the rotation on the one hand as already
described by bracing and on the other hand done by positive elements, such. B. projections on the axis 2; 3, (gears, claws and the like), which engage in the corresponding recesses of the clamping cap 7. Possibilities of this positive rotation lock are shown in FIGS. 5 and 6.
In these possibilities, the projections 9; 10; 11 on the axis Ί; 3 tip-shaped and the other zapfet.förmig.

Claims (3)

  1. claims:
    1. rim brake for bicycles, especially racing bicycles, which consists of two brake levers, which are mounted on a rotation axis, wherein in each brake lever a torsion spring is located, which is supported with a leg in the brake lever and the other leg in a stationary component, characterized in that the stationary component is a clamping cap (7) which is rotatable and lockable with the axis of rotation (2; 3).
  2. 2. Rim brake according to claim 1, characterized in that the axis of rotation (2, 3) of the brake lever (4, 5) on a releasably connected to the fork (16) base plate (1) is attached.
  3. 3. Rim brake according to claims 1 and 2, characterized in that the axis of rotation (2; 3) and the clamping cap (7) have interlocking projections (9; 10; 11) and recesses.
DD31913388A 1988-08-23 1988-08-23 Rim brakes for bikes, in particular racing bikes DD275022A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DD31913388A DD275022A1 (en) 1988-08-23 1988-08-23 Rim brakes for bikes, in particular racing bikes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD31913388A DD275022A1 (en) 1988-08-23 1988-08-23 Rim brakes for bikes, in particular racing bikes

Publications (1)

Publication Number Publication Date
DD275022A1 true DD275022A1 (en) 1990-01-10

Family

ID=5601907

Family Applications (1)

Application Number Title Priority Date Filing Date
DD31913388A DD275022A1 (en) 1988-08-23 1988-08-23 Rim brakes for bikes, in particular racing bikes

Country Status (1)

Country Link
DD (1) DD275022A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4328758A1 (en) * 1993-08-26 1995-03-02 Wolfgang Prof Dr Holle Braking device, in particular for two-wheeled vehicles
EP2383177A1 (en) * 2010-04-28 2011-11-02 Tektro Technology Corporation Front brake of racing bicycle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4328758A1 (en) * 1993-08-26 1995-03-02 Wolfgang Prof Dr Holle Braking device, in particular for two-wheeled vehicles
EP2383177A1 (en) * 2010-04-28 2011-11-02 Tektro Technology Corporation Front brake of racing bicycle

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Legal Events

Date Code Title Description
UW Conversion of economic patent into exclusive patent
ENJ Ceased due to non-payment of renewal fee