WO2003093095A1

WO2003093095A1 - Mechanical anti-block-braking system, for a bicycle wheel

Info

Publication number: WO2003093095A1
Application number: PCT/GR2003/000015
Authority: WO
Inventors: George Papadeas
Original assignee: George Papadeas
Priority date: 2002-05-01
Filing date: 2003-04-24
Publication date: 2003-11-13
Also published as: CN100548787C; CN1665714A; GR1004220B; AU2003226573A1

Abstract

Mechanical anti - block - breaking system of a bicycles weel, which is based on the centrifugal forces attendance during the breaking, which stops when the bicycles wheel is not turning. The centrifugal forces, creation is a result of small balls rotation (3), which are placed in radial grooves of a circular disk (2), which is turning round its center, because it leans on the bicycles tyre. Then, the centrifugal forces are received by an inclining ring (4), which is concentric and parallel to the circular disk (2), and creates axial components of centrifugal forces, which, leads up to an additional stretch force in the wipe rope of brake. The invention is moored to the forward suspension of bicycle, similar to a common 'dynamo'.

Description

MECHANICAL ANTI-BLOCK-BRAKING SYSTEM, FOR A BICYCLE WHEEL

D E S C RI P T I O N

According to drawing 2, the invention is constituted by a circular flexible ring (1), almost vertical to the bicycle wheel, which leans, on the tire of wheel (12), accepting thus, its rotation. The transmission relationship between the flexible ring (1) and the wheel of bicycle, is bigger than 2.

In the internal region of the above ring (1), is attached a second circular disk (2), which has radial grooves (similar to wedges), inside of which they can slip solid particles of various dimensions and forms (3). (Drawing 3). Thus, the solid particles (e.g. balls) inside the grooves (3), can simultaneously execute, two kinds of movement: Rotation around the center of circular disk (2), and at the same time, radial movement, along the each groove.

Concentric to the circular disk (2), by the side of turned balls (3), and in a parallel with its level, is placed a second circular disk (4), with the following characteristic: It allocates an inclining surface in a certain region of rotation beam, so the balls (3) located in the biggest beam of rotation, can permanently lean on this surface. In this case, the bent corner of circular disk (4), is bigger than the radial slipping friction corner between this (4), and turned balls (3). On the other hand, the bent corner, of circular disk (4), is a ls o bigger than the radial slipping friction corner between the, radial grooves, and turned balls (3).

The rotation of balls (3), creates a centrifugal force, that tends to remove them from their center of rotation. Thus, the balls (3) they are in the biggest beam of rotation, receive the centrifugal force, and they transfer it to the bent of ring (4), which has the result of an axial component creation, which is vertical to the rotation level. For this reason, when the bicycle is moving, (as a result of the centrifugal forces), an axial impulse of this part of mechanism is created, which causes an additional stretch force in the wipe rope of brake (7).

As for the frictions reduction, they are used two radial bearings (9 and 10). All the mechanism, are retained assembled grace to the brake force of wipe rope, which penetrates from its interior. This is justified, because through the interior of mechanism it only goes the wipe rope of brake, while its plastic wrappings are retained outside by the upper and lower parts, in the center of mechanism.

When the bicycle is not breaking, the centrifugal force, (due to the turned balls) (3), is received from entire element (4). During the breaking, (as a result of the bent of the disc) (4), the breaking force that acts to the center of the mechanism, creates two competitive forces in the turned balls (3), on the radial direction: The centrifugal and the radial component of braking force. In big speeds, the centrifugal is the biggest one, so, the turned balls (3), remain in rotation, in the biggest beam of their orbit, even if the bicycle breaks. On the contrary, if the bicycle speed is under a specific limit, the radial component of braking force is bigger, so the turned balls (3) begin to coil itself to the center of circular disk (2). As a result of it, the inclining part of the disc (4) comes closer to the disc (2), and thus, the wipe rope of brake ^"looses^'", so, the disengagement system acts.

The realization of the invention, appears in drawing 1. The element (5), moors to the forward suspension of bicycle, with the use of element (11).

TABLE OF ELEMENTS

Claims

Mechanical anti-block-breaking system of a bicycles wheel, which provides additional stretch force in the wipe rope of brake, only when the bicycles wheel is turned, which is characterized by a mechanical system which creates this force, based on the centrifugal forces creation during the breaking, (before the bicycle stops), constituted from:

• A flexible ring (1), which can leans on the tyre of the bicycles wheel,

• a circular disk (2) which is attached to the internal region of the flexible ring (1 ), having radial g rooves on its surface, • a number of small bodies (3), which are placed inside the radial grooves of the circular disk (2) having a constant height, (greater than the grooves height) and they can move itself at the length of each groove,

• a second circular disk (4), which is parallel and concentric to the first one (2), having an inclining surface on its exterior region, on which they can lean the bodies (3), when they are diverted to the exterior region of the circular disk (2), (as the result of the centrifugal forces that are created during the rotation ) and,

• a passing through the mechanism hole, which is placed at the centre of the circular disks rotation (2 and 4), through which it o n l y passes the wipe rope of brake, (but the plastic wrapping is retained in the abroad of mechanism), and thus is achieved an additional stretch force in the wipe rope of brake, when the two circular disks (2 and 4) prompt the plastic wrapping of wipe rope to the abroad of the mechanism, accepting the axial component of the centrifugal forces, ( which is created during the rotation of bodies (3) ), due to the inclining surface of circular disk (4).