Patent Application
20050241892
(a) Technical Field of the Invention
The present invention is related to a rear bicycle brake, and more particularly to a cable stayed brake for a free style bicycle.
(b) Description of the Prior Art
Referring to
The spacing between two clamps of the rear brake is getting smaller as illustrated in
The primary purpose of the present invention is to provide an improved structure of a rear brake for a bicycle to accommodate any brake cable not longitudinally straight arranged to any style of bicycle for the brake cable to comfortably penetrate at a certain inclination. To achieve the purpose, the rear brake is comprised of a primary and a secondary brake arms; axes of both arms are respectively pivoted to the seat tube of the bicycle and the lower sections respectively of two axes extending in symmetric to each define a clamping portion whereon a brake block is fixed to clamp the rim of the rear wheel. Wherein, the upper section of the primary brake arm extends at a certain inclination to form a pull arm; and that of the secondary brake arm extends in a curve to form a press arm; an inclined end opening is provided to the press arm to receive the insertion of an inner cord of the brake cable and fastened of the inner cord at the terminal of the primary brake arm to permit the insertion of the inner cord at a certain inclination.
Another purpose of the present invention is to provide an improved structure of a rear brake, wherein, depending on the style of the bicycle or the spatial demand of the brake cable connected, an L-shape guide tube for brake cable is connected to the inclined end opening of the press arm of the secondary brake arm without compromising the teaching of the present invention.
Another purpose yet of the present invention is to provide an improved structure of a rear brake, wherein, as the entangled of the brake arms with the running gear panel may present danger to the rider of the bicycle, a retainer is provided on the back of the middle section of the primary brake arm to interlock both brake arm in their elastic expansion status when the brake cable suddenly breaks up so to prevent the brake arms from being locked in the running gear panel due to the absence of being expanded by the brake cable.
The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
The following descriptions are of exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
Referring to the accompanying drawings of the present invention, a preferred embodiment of an improved structure of a rear brake of the present invention is comprised of a primary brake arm 1 and a secondary brake arm 2; both of the primary and the secondary brake arms 1, 2 are pivoted respectively with their axes 11, 21 to a seat stand of a bicycle; and two clamping portions 12, 22 respectively extend from the lower sections of both axes 11, 21 to be fixed with a brake block to clamp on the rim of the rear wheel of the bicycle. Wherein, the upper section of the primary brake arm extends at a certain inclination to form a pull arm 13, and the upper section of the secondary brake arm 2 extends at a curvature to form a press arm 23. An inclined end opening 24 is provided to the press arm 23 for an inner cord 31 of a brake cable 3 to penetrate through and fastened at a terminal 14 of the primary brake arm 1. Consequently, the inclined installation of the end opening 24 of the press arm 23 of the secondary brake arm 2 satisfies the inclined insertion of the brake cable 3 coming non-longitudinally straight from a free style bicycle or any other type of bicycle to provide the optimal rear brake.
As illustrated in
Furthermore, as the entangled of the brake arms with the running gear panel may present danger to the rider of the bicycle, a retainer 15 is disposed on the back of the middle section of the primary brake arm 1 to interlock both brake arm in their elastic expansion status when the brake cable 3 suddenly breaks up so to prevent the brake arms 1, and 2 from being locked in the running gear panel due to the absence of being expanded by the brake cable.
It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.
While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
