JP3060281B2 - Brake lever for motorcycle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake lever used for a motorcycle such as a bicycle or a motorcycle, and more particularly to a brake lever for rotating a series of braking operations to adjust the operational feeling received by the driver from the lever. It was made.

[0002]

2. Description of the Related Art For example, a bicycle brake lever having a structure as shown in FIG. 8 is known. Base (2) fixed to handlebar (1) with tightening band (24)
Is provided with a cable hole (22).
One end of the brake cable (4) is inserted and fixed to 2). An engagement shaft (42) fixed to the end of the inner cable (41) is housed and fixed in a lever (3), and the lever (3) is supported by the base (2). It is rotatably supported by a shaft (23).

In this device, when the lever (3) is gripped, the inner cable (41) is pulled out from the outer cable (40), and a brake rubber (not shown) is pressed against the rim, thereby providing a braking effect. However, in the above-mentioned conventional motor, when a series of braking operations by the lever (3) are performed, the driver can use the inner cable via the lever (3).
The aspect of the tension change received from (41) is uniform. Therefore, there is a problem that the feeling of the braking operation cannot be adjusted according to the driver's preference.

The braking operation feeling received from the lever (3) is based on the length of the inner cable (41) pulled out from the outer cable (40) when the lever (3) is rotated by a unit angle, and at this time, It is determined by the resistance received by the driver from the lever (3) and how the resistance changes.
However, in the above conventional one, the inner cable (41)
Since the movement trajectory of the end is fixed in a simple arc shape drawn around the pivot of the lever (3), the movement trajectory of the end of the inner cable (41), that is, from the inner cable (41) The movement locus of the point of application of the tension to the lever (3) cannot be changed, so that the feeling of the braking operation cannot be adjusted.

The present invention has been made in view of the above points, and has been made in consideration of a "base for fixing an end of an outer cable (40)".
(2) and an inner cable rotatably supported by the base (2) and pulled out from the outer cable (40).
(41) A two-wheeled vehicle brake lever having a lever (3) for pulling an end of the vehicle ''), it is possible to adjust the feeling of the braking operation according to the driver's preference. I do.

[0006]

[Technical Means] The technical means of the present invention for solving the above-mentioned problem is as follows: "The other end of the link body (31) having the inner cable (41) connected to one end thereof is connected to the lever (3) by the support shaft (32). To the lever (3) by contacting with the link body (31).
The stopper (33) for regulating the rotation angle of the link body (31) to be constant with the braking operation of the lever (3)
And the contact position between the stopper (33) and the link body (31) can be adjusted. "

[0007]

The above technical means operates as follows. At the beginning of the braking operation, the link body (31) can rotate relative to the lever (3) by a certain angle, so the inner cable
The point of action of the tension from (41) to the lever (3) coincides with the support shaft (32), which is an arc-shaped trajectory centered on the fulcrum of the lever (3).

Further, when the lever (3) is rotated and the relative rotation angle of the link body (31) relative to the lever (3) reaches the predetermined angle, the link body (31) comes into contact with the stopper (33). After this time, the point of action of the tension from the inner cable (41) to the lever (3) will be the link body (31) and the inner cable (41).
It becomes a connection part. Therefore, the link body (31) and the stopper (3
By adjusting the contact position with (3), the relative rotation angle range of the link body (31) with respect to the lever (3) is adjusted,
The link body (3) in the range of the rotational operation angle of the lever (3)
The ratio of the relative rotation angle in 1) changes, and the trajectory of the action point of the tension in the braking operation changes according to the change in the ratio.

[0009]

The present invention has the following specific effects. Since the movement locus of the point of application of the tension of the inner cable (41) during the braking operation can be changed, the lever (3)
The driver can adjust the operational feeling received from the lever (3) to his liking at the time of the braking operation by rotating the lever.

[0010]

Next, the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the tightening band (24) fitted to the handlebar (6) is attached to the base via the tightening bolt (25).
(2) It is attached to. Base (2)
6) (27), and a front plate (29) and an upper plate (28) that are erected in a range from the upper front surface to the upper surface of these two side plates, thereby forming the internal space (20). Are formed.

A cable hole (22) formed in the front plate (29).
The end of the brake cable (4) is fitted and fixed to the
(41) is connected to the link body (31) via an engagement shaft (42) provided at the distal end thereof. That is, a pair of left and right arms (313) and (314) protruding from the distal end of the link body (31) is provided with a lateral hole (311) for inserting the engaging shaft (42) at the distal end of the inner cable (41). 312) is drilled and the one arm (314)
A cable insertion slit (315) for connecting the inside and the outside of the horizontal hole (312) formed in the hole is cut out. Therefore, insert the inner cable into the cable insertion slit (315).
(41) to insert the engaging shaft (42) into one of the lateral holes (312)
Then, when the inner cable (41) is placed in a horizontal posture, the engagement shaft (42) becomes rotatable about the link body (31).
(41) is connected to the link body (31). In this device, since the engagement shaft (42) is rotatably connected to the sides (311) and (312) of the link body (31), a nipple-type member fixed to the end of the inner cable (41) is provided. The inner wire (41) can be pulled more smoothly than when the alloy tool is pulled by the link body (31).

Next, the link body (31) is rotatably accommodated in a lever (3) having a U-shaped cross section. That is, a shaft hole (35) is formed at the base end of the link body (31), and the support shaft (32) loosely inserted into the shaft hole (35) is attached to both side walls of the lever (3). (36) The distal end portion is penetrated through (37) and is caulked, whereby the link body (31) is rotatably connected to the lever (3).

The stopper (33) for regulating the rotation angle of the link body (31) is constituted by a bolt (330) in this embodiment. That is, by screwing a bolt (330) into a support plate (39) installed between both side walls (36) and (37) of the lever (3), the tip of the bolt (330) and the link body ( The interval of 31) can be adjusted, so that the feeling of the braking operation can be adjusted according to the driver's preference as described later.

The lever (3) is rotatably mounted on a support arm (201) projecting from a lower portion of the base (2) via a support shaft (23). In this device, when the lever (3) is rotated from the state shown by the solid line in FIG.
The point of application of the tension, i.e., the support shaft (32) of the link body (31) makes a circular motion about the rotation center (support shaft (23)) of the lever (3). Then, with the rotation of the lever (3), the link body (3
1) gradually approaches the tip of the bolt (330). And
When the lever (3) is further gripped and rotated, the link body (31) comes into contact with the tip of the bolt (330) as shown by the imaginary line in FIG. (32) cannot be rotated, and the inner cable (4
The point of application of the tension of 1) shifts to the insertion portion of the engagement shaft (42) in the link body (31). And after that, the inner cable (4
The portion of the engagement shaft (42) serving as the point of application of the tension of 1) makes a circular motion about the support shaft (23).

By adjusting the screwing amount of the bolt (330) to change the contact position between the bolt (330) and the link body (31) during the braking operation, the tension in the braking operation is reduced. The locus of the action point will change. Thereby, the braking operation feeling can be adjusted. In FIG. 4 showing a second embodiment of the present invention, a projection (34) is provided on the upper surface of a link body (31), and a support plate (39) is provided.
The bolt (330) screwed into the projection is in contact with the projection (34), and this also operates in the same manner as in the first embodiment.

In the embodiment shown in FIGS. 5 and 6, a cam plate (331) is employed as the stopper (33). In this case, both side walls (36) and (37) of lever (3) and cam plate (33)
1) through which a tightening bolt (38) is penetrated.The tightening bolt (38) is formed by engraving a male screw (382) on a cylindrical portion extended to the tip of a hexagonal shaft portion (381). The cam plate (331) has a hexagonal hole (333) through which the hexagonal shaft (381) is inserted, and the left and right side plates (36) (37) of the lever (3) also have the same shape. Hex holes (367) and (377) through which the hexagon shaft (381) is inserted are formed. Thus, when the cam plate (331) is rotated to tighten the tightening bolt (38), the posture of the cam plate (331) is adjusted and fixed stepwise at predetermined angular intervals. Therefore, the link body (31) and the cam plate (33
The contact timing 1) can be adjusted by changing the posture of the cam plate 331, and the same operation and effect as those of the first embodiment can be obtained.

In a fourth embodiment shown in FIG. 7, a bolt (330) is screwed into a link body (31). In this device, when the link body (31) rotates with the braking operation, the head of the bolt (330) comes into contact with the stop plate (30) fixed to the lever (3). Also in this case, the bolt (33) is adjusted by adjusting the amount of screwing of the bolt (330) into the link body (31).
The contact timing between the stop plate (0) and the stop plate (30) can be changed, and the same operation and effect as the above embodiments can be obtained. In this embodiment, the stop plate (30) corresponds to the stopper (33) described in the technical means.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a connecting portion between a link body (31) and a brake cable (4).

FIG. 3 is an explanatory view of a mounting portion of a tightening band (24) on a base (2).

FIG. 4 is an explanatory view of a second embodiment.

FIG. 5 is an explanatory view of a third embodiment.

FIG. 6 is an explanatory view of a third embodiment.

FIG. 7 is an explanatory view of a fourth embodiment.

FIG. 8 is an explanatory view of a conventional example.

[Explanation of symbols]

 (2) ・ ・ ・ Base (3) ・ ・ ・ Lever (31) ・ ・ ・ Link body (32) ・ ・ ・ Support shaft (33) ・ ・ ・ Stopper (38) ・ ・ ・ Tightening bolt (39) ・..Support plate (40) ・ ・ ・ Outer cable

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-183372 (JP, A) JP-A-1-127476 (JP, A) JP-A 62-203794 (JP, U) JP-A 61- 157082 (JP, U) Japanese Utility Model Showa 62-36891 (JP, U) Japanese Utility Model Showa 61-146485 (JP, U) Japanese Utility Model Showa 52-166253 (JP, U) (58) Fields surveyed (Int. ⁷ , DB name) B62L 3/02 G05G 7/04

Claims (4)

(57) [Claims] A base (2) for fixing an end of an outer cable (40), and an inner cable (41) rotatably supported by the base (2) and pulled out from the outer cable (40). ), The inner cable (4) of the brake lever for motorcycles having a lever (3) for pulling the end of
The other end of the link body (31) having one end connected to one end is rotatably connected to the lever (3) with the support shaft (32), and the lever (3) is brought into contact with the link body (31). A stopper (33) is provided on the lever (3) for regulating the rotation angle of the link body (31) to be constant during a braking operation, and a contact position between the stopper (33) and the link body (31) is provided. Adjustable brake lever for motorcycles. 2. The motorcycle brake lever according to claim 1, wherein the stopper (33) is a bolt screwed into a support plate (39) fixed to the lever (3). The stopper (33) is a cam plate (331) that is rotatably supported by a tightening bolt (38) with respect to the lever (3) and is fixed in an arbitrary rotation posture. Item 2. The brake lever for a motorcycle according to Item 1. 4. The link body is provided by rotatably inserting an engagement shaft (42) provided at an end of the inner cable (41) into a lateral hole formed at a tip end of the link body (31). The brake lever for a motorcycle according to any one of claims 1 to 3, wherein the brake lever is connected to (31).