JPH01500026A - Drive means for bicycle brakes, especially in racing bicycles - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] In particular, the bicycle brake drive means for racing bicycles. The present invention relates to a driving means for a racing bicycle, and in particular to a driving means for a racing bicycle.

Known devices force cyclists to perform different strokes with each finger This is an inconvenience.

The little finger, which is often weaker than the other fingers, must exert greater force. moreover , the free end of the lever is one of the main causes of bodily injury during falls. becomes. Besides, the levers actually found on the market are mostly non-aerodynamic. stomach. These drive mechanisms are specifically equipped with cables that run inside the handlebar tube. When installed, for example, with narrow bends for control wires, often It is reasonable.

Furthermore, in speed races, the handlebars are reversed compared to normal races. A bicycle with a This handlebar is actually flipped over and your hands Extended in a straight position to facilitate grasping and provide even more protection for cyclists Allow it to assume an aerodynamic position. In this case, move the brake lever. Scraping is even a more serious problem. There are only a few solutions that have been achieved so far. is not valid. The working rod must be curved too narrowly. this thing makes it easier to break, resulting in longer and more difficult replacements.

The purpose of this invention is to make it easier and more reliable for cyclists: 1. safety Not only does it have an overall aerodynamic structure, but even parts can be easily replaced. The object of the present invention is to realize a brake drive device that allows

Another purpose is to use handlebars with flipped ends for speed racing. In order to create a device that can also be adapted to the nord bar used in be.

The proposed drive means are adapted to rotate about an axis substantially parallel to the axis of support of the hand. The above objective is achieved by providing a hinged lever.

The preferred solution is that the lever of the brake is U-shaped, the end of which is connected to the handle. Provides that the bar is hinged at the grip.

Another convenient solution is to create a cavity inside the grip containing the brake drive mechanism. It's about being prepared.

In this last case, in order to obtain a wide cavity at its end, the structure of the handlebar It is preferable to have the grip part protrude a certain distance above the tube that forms the .

Another convenient solution is to have a second tab parallel to the handlebar grip. The objective is to realize a shaft that supports the lever.

The drive mechanism can be converted from one solution to the other by simple exchange of some mechanical parts. By moving to the solution method, it can be made into a hydraulic mechanism or a mechanical mechanism.

In particular, the drive means may be a pivot joint and a small hydraulic piston or alternatively a flexible It can consist of a swinging arm that moves a tied rod consisting of a kana wire control. Ru.

The invention will now be better explained by the example solution shown in the enclosed drawing. Dew.

FIG. 1 is a perspective view showing the entire handlebar on which the proposed device is installed.

Figure 2 is a partial cross-sectional view of the handlebar containing the proposed device, viewed from above. It also shows the position of the hand.

FIG. 3 is a sectional view taken along line 3--3 in FIG. 2.

FIG. 4 is a sectional view taken along line 4--4 in FIG. 2.

FIG. 5 is a schematic diagram showing a modification of the drive mechanism.

As can be seen from the drawings, the handlebar 10 has to be inserted into the handle of a bicycle. and two bent handles 12 and 13 extending forward and upward. have. At the ends of these bent handles there is a wide cavity 40 and two lateral Handles 14 and 15 are envisaged, each containing one directional tab 16 and 17. these each includes a pedestal 18 into which a bolt 19 is inserted, and the bolt 19 is inserted into the pedestal. , rotate levers 20 and 21 around the X axis parallel to the Y axis of handle 14 or 15. Turn it around. The rearmost parts of these are shaped like the letter 0, and there are bolts at their ends. It is provided with a pedestal 22 and a nub 25 for the seat 19. This nub 25 has a spherical head 26, on whose head one end of the pivot joint 30 is engaged, and the other end is engaged. is engaged with another spherical head 31 fixed to the arm of the L-shaped swinging arm 32. are doing.

The swinging arm 32 is mounted at a fixing point 33 provided inside the handle inside the cavity 40. It is hinged. As can be seen from the drawing, all mechanisms are connected to the above-mentioned cavity. contained within. In particular, swing arm 32 has another arm, which arm is at its end. The portion 34 is adapted to apply pressure on the bar 35, and the bar is A small hydraulic syringe to move the brake shinny (not shown) with a key pad. The driver 41 is driven. Hydraulic cylinder 41 secures the anatomical end of the handle. provided at the highest part of the handle, on the extended part that acts as a Water is supplied by a water reservoir 50 so as to move forward.

It is also possible to envisage a wire drive mechanism of the type shown in FIG. in this case In this case, the nub 25 would receive the end of a pivot joint 30a similar to the pivot shaft 30. cormorant. And this likewise replaces the cylinder 41 with a flexible wire drive 51 It will be connected to the swinging arm 32a which moves the wire 52 consisting of the following.

ANNEX To THE INTERNATIONAL 5EARCHREP ORT ONreport

Claims (8)

[Claims] 1. levers (20, 21) and their levers to the brake shoes with brake pads. and a drive means for a bicycle brake comprising means for transmitting the interlocking of the bars. In this case, the levers (20, 21) are arranged substantially parallel to the hand support axis (Y). drive, characterized in that it is hinged for rotation around an axis (X) means. 2. The brake levers (20, 21) are U-shaped and can be used to grip the handlebar. characterized in that it has two hinged ends at the parts (14, 15). The driving means according to claim 1. 3. A brake mechanism can be housed inside the grasping part (14, 15). Claim 1 or 2, characterized in that it is provided with a cavity (40) that can Driving means as described in section. 4. Said handles (14, 15) obtain wide cavities (40) at their ends. projecting at a certain distance above the tube forming the structure of the handle. The driving means according to claim 3, characterized in that: 5. The lever shaft is supported by two pieces fixed to the gripping parts (14, 15) of the handlebar. Claims 1 to 10 are characterized in that they consist of tabs (16, 17). The driving means according to any one of Item 4. 6. Claims 1 to 5 characterized in that the method is based on a hydraulic drive mechanism. The driving means according to any one of the above. 7. Claims 1 to 6, characterized in that the method is based on a wire drive mechanism. The driving means according to any one of the above. 8. The mechanism includes a pivot joint (30, 30a) and a small hydraulic piston (41). , or alternatively a oscillation that moves a wire (52) consisting of a flexible wire drive. It consists of arms (32, 32a), that is, it is a transmission means to the brake shoe. A driving means according to claim 6 or 7.