JPS621832Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brake lever operating device for light vehicles such as bicycles.

When a brake lever is attached to the handlebar of a bicycle and the lever is operated with the fingers of the hand, the braking ability changes depending on the size of the hand and the strength of the grip.

In other words, when operated by an adult with large hands, the operating range of the lever is relatively large and the braking force is large, but in the case of bicycles for children and infants, the operating range of the lever is small and the braking force is large because the hands are small. Another problem was that the desired braking force could not be obtained unless the lever ratio was also increased.

For this reason, it is necessary to design the brake lever device according to the size of the hand, but this increases the number of types of brake lever devices, which is not desirable in terms of production control, and also increases manufacturing costs.

This invention was devised to solve the above-mentioned problems, and by making the pivot position of the brake lever variable, one type of brake lever operating device can be applied to both adults and children. The object is to enable the lever ratio changing operation to be easily performed without using any tools.

Embodiments of the present invention will be described below with reference to the drawings.
In the figure, 1 is a bicycle handlebar, 2 is a bracket for mounting a brake lever that is fixed to the handlebar 1 via a tightening band (not shown), 3 is a long hole provided in the side wall of the bracket 2,
Reference numeral 4 designates an outer wire of the brake operating cable, and 5 designates an outer receiver provided at the end of the outer wire 4, the small diameter portion 5a of which is slidably fitted into the elongated hole 3. Further, 6 is an inner wire, 7 is a wire nipple fixed to the end of this inner wire, and 8 is a brake lever.

In this embodiment, as shown in detail in FIG. 7, a cable connecting hole 9 for brake operation is provided at the base of the brake lever 8, and an extension protrusion 10 that is substantially perpendicular to the brake lever 8 is connected to the brake lever 8. This extended protrusion 10 is formed integrally with a long hole 11, and a plurality of (three in this example) continuous recesses 12 are formed on one side (the right side in FIG. 7) of this long hole 11. .

In addition, as shown in detail in FIG. 8, a guide plate 13 having a U-shaped planar shape (see FIG. 8 c) that can sandwich the base of the brake lever 8 and the extension protrusion 10 in a sandwich-like manner is provided separately. The guide plate 13 is provided with a cable connection hole 14 that matches the cable connection hole 9 when the guide plate 13 is fitted to the base of the brake lever 8, and a long hole that matches the slot 11. 15 to guide plate 1
3, and a plurality (three in this embodiment) of continuous recesses 16 are formed on the other side of the elongated hole 15 (the left side in FIG. 8a). Further, a hole 17 is provided in the connecting portion 13a of the guide plate 13, and a flanged cap 18 is slidably fitted from the inside of this hole 17, and the guide plate 13 is connected to the brake lever 8.
When fitted to the extension protrusion 10 of the flanged cap 18
The end face of the coil spring 19 inserted into the extension protrusion 1
The continuous recess 1 faces the pivot shaft 20 inserted into the overlapping elongated holes 11 and 15.
Make sure to hold it between 2 and 16. This pivot shaft 20 is supported by a bracket 2, and rotatably supports the brake lever 8.

FIG. 9 shows details of the cable connecting clevis 21, which is connected to the cable connecting hole 9 at the base of the brake lever 8 by a connecting shaft 22, and has an inner wire insertion locking groove 23 at the free end of the clevis 21. established,
As shown in FIG. 1, the end of the inner wire 6 is inserted into the groove 23 so as to lock the wire nipple 7 therein. Further, the bracket 2 is provided with a slope 2a (see FIG. 1) with which the end surface 21a of the clevis 21 abuts at the retracting limit position of the inner wire 6, and a stopper 24 is further provided to restrict the stopping position of the brake lever 8 at this time. Clevis 21
It is formed integrally with.

Next, the operation of the device of the present invention constructed as described above will be explained. FIG. 1 shows the state in which the pivot shaft 20 is set at the uppermost position on the extension protrusion 10 of the brake lever 8, and this state is suitable for adults or persons with large hands. In other words, in this case, the brake lever 8 is operated with a relatively large grip force, so the lever ratio is small, and on the contrary, the inner wire 6
The stroke can be made larger. Therefore, it is suitable for large bicycles.

To adjust this brake lever operating device for use by children or people with small hands, push the flanged cap 18 or guide plate 13 in the direction of arrow c from the state shown in FIG. 4 as shown in FIG. As a result, the coil spring 19 is compressed to expand the space between the left and right recesses 12 and 16. In this way, the shaft 20 can be moved relatively downward, so the shaft 20 can be positioned between the intermediate recesses 12 and 16, or the shaft 20 can be moved between the lowest recesses 12 and 16.
When the coil spring 19 is released after being positioned between the guide plates 13 and 6, the spring force causes the guide plate 13 to move.
rotates clockwise in FIG. 5 about shaft 22, and clamps shaft 20 between recesses 12 and 16.

In this way, the pivot shaft 20 is connected to the lower recess 12,
16, the pivot shaft 20 and the cable connection shaft 22
Since the distance between the two ends becomes smaller, the lever ratio increases accordingly. Therefore, the lack of grip strength of children and people with small hands can be compensated for by increasing this lever ratio.

In this case, since the position where the end surface 21a of the clevis 21 abuts against the slope 2a of the bracket 2 rises, the stopping position of the brake lever 8 is, for example, the first position.
It rises as shown by the chain line 8' in the figure. This is convenient for people with small hands.

As described above, the present invention is very convenient because one type of brake lever operating device can be applied to both adults and children, and the lever ratio can be easily changed without using any tools. It has an excellent effect.

[Brief explanation of the drawing]

Fig. 1 is a front view of the device of the present invention, Fig. 2 is a side view thereof, Fig. 3 is an enlarged view of the AA cross section in Fig. 2, Fig. 4 is a partial sectional view of Fig. 1, and Fig. 5 The figure is an explanatory diagram of its operation, Figure 6 is a partially enlarged plan sectional view of the clevis, Figure 7 is a front view of the brake lever, and Figure 8a.
9 is a front view of the guide plate, FIG. 9B is a side view thereof, FIG. 9C is a plan view thereof, FIG. 9A is a front view of the clevis, and FIG. 1...Handlebar, 2...Bracket, 3...
...long hole, 4...outer wire, 5...outer receiver,
6...Inner wire, 7...Wire nipple, 8
... Brake lever, 9 ... Cable connection hole, 10 ...
Extension protrusion, 11...Long hole, 12...Continuous recess, 1
3...Guide plate, 14...Cable connection hole, 15
... Long hole, 16 ... Continuous recess, 17 ... Hole, 18
... Cap with flange, 19 ... Coil spring, 20 ...
... Pivot shaft, 21 ... Cable connection clevis, 22 ...
Connection shaft, 23...Inner wire insertion locking groove, 24
...stopper.

Claims (1)

[Scope of utility model registration request] A cable connection hole is provided at the base of the brake lever, an extension protrusion is provided that is substantially perpendicular to the brake lever, an elongated hole is provided in the extension protrusion, and a plurality of continuous recesses are formed on one side of the elongate hole. , a guide plate having a rope connecting hole that matches the cable connecting hole and a long hole that matches the long hole, and a plurality of continuous recesses provided on the other side of the long hole is formed separately; Attach the guide plate to the base of the brake lever, connect the inner wire for brake operation to the overlapping cable connection hole, and insert the brake lever pivot shaft into the overlapping elongated hole to connect the brake lever extension protrusion and A brake lever operating device in which a spring is provided between a guide plate and a pivot shaft is held between the opposing continuous recesses.