JPH037273Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to brake levers and other operating lever devices mainly applied to motorcycles and other two-wheeled vehicles.

Conventionally, as a device of this type, as shown in the first figure, there is a known device in which an operating lever c located on the front side of the handle pipe is attached to the end of the handle pipe a via a lever holder b. is the holder b at its root as shown in the same figure.
It is generally fitted to the holder b side with a bolt d passing through them, and is supported tiltably as the axis of the bolt d. When attaching and detaching, it is necessary to attach and detach the bolt d, which inevitably makes the work troublesome.

Furthermore, according to Japanese Patent Application Laid-Open No. 54-337, a conical collar is provided on the outer periphery of the root of the operating lever, and the inner surface of the collar facing the outward seating surface of the lever holder is engaged with an annular groove formed on the seating surface. An operating lever device is known in which a circumferential lip is formed, and the lever is tilted using an annular groove portion on one side of the periphery located on the operating direction side of the lever as a pivot portion.

This has the advantage that the operating lever can be attached to the lever holder without using a bolt, but it has the following disadvantages.

(a) The circumferential lip is only held in engagement with the annular groove by the traction force of the operating wire that is engaged with the operating lever, and if there is play in the lever due to elongation of the wire, etc., it will cause vibrations in the vehicle body. This causes the circumferential lip to come off the annular groove, making it easy for the operating lever to fall off from the lever holder.

(b) The position of the pivot section shifts due to the movement of the finger relative to the operating lever, which impairs the stability of lever operation.

(c) Since a conical collar is provided on the outer periphery of the base of the operating lever, the conical collar will get in the way and make it impossible to lock the operating wire to the operating lever, so the operating lever must be removed from the conical collar to lock the wire. Therefore, it is necessary to form the operating lever and the conical collar separately, which increases the number of parts.

In view of the above points, it is an object of the present invention to provide a device that allows an operating lever to be attached to a lever holder with one touch without using bolts, and also solves the problems of the prior art using a conical collar as described above. is its purpose.

In order to achieve this object, in the present invention, as illustrated in FIGS. 2 to 5, the handle pipe 1 is attached to the end of the handle pipe 1 via a lever holder 2.
In the case where the operating lever 3 located on the front side of the operating lever 3 is attached, an arm 4 extending rearward is provided at the root of the operating lever 3, and an operating wire 8 that is latched to the root of the operating lever 3 is led out from the operating lever 3. The arm 4 is formed into a substantially semicircular shape having an inner circular arc surface 4a and an outer straight surface 4b, and an inner circular arc surface 5a that allows the arm 4 to fit into the lever holder 2. and an outer straight surface 5b, and the straight surface 5b of the groove 5 is formed.
An inclined surface 6a is formed at the front part of the arm 4 to form a gap 6b that gradually becomes wider toward the front between it and the straight surface 4b of the arm 4. The groove 5 is inserted between the arm 4 and the front end with the straight surface 4b of the arm 4 aligned with the inclined surface 6a.
An opening 6 that can be inserted and removed freely is formed in the opening 6.

In addition, in the embodiment shown in FIGS. 2 to 5,
The operating lever 3 has an engaging groove 7 at the front end of its base, and the outer end of an operating wire 8 such as a brake wire or the like is detachably engaged in the engaging groove 7.

To explain its function, the operating lever 3 is fitted into the groove 5 of the lever holder 2 at its arm 4, and normally has an inner arcuate surface 4a and an outer straight surface 4b of the arm 4, as shown in the second figure. are in contact with the arcuate surface 5a and straight surface 5b of the groove 5, respectively, and even if the operating lever 3 has play due to elongation of the operating wire 8, the arm 4 is fitted and held within the groove 5.

When you put your finger on the operating lever 3 and pull it toward you, the lever 3 is guided on the corresponding arcuate surface 5a of the groove 5 on the arcuate surface 4a of the arm 4, and is defined by the center of curvature of the arcuate surface 5a. It tilts around a predetermined pivot point as shown in FIG. It functions as a relief against the outward tilting of the operating lever 3, and the operating lever 3 can be tilted smoothly and reliably within the required operating range.

When the operating wire 8 is disengaged and the operating lever 3 is tilted so that the straight surface 4b of the arm 4 follows the inclined surface 6a, a position is formed between the inclined surface 6a and the front end of the circular arc surface 5a. The arm 4 is inserted through the opening 6 into the fifth
As shown in the figure, it can be freely pulled out from the groove 5, and thus the operating lever 3 can be easily attached to and detached from the arm holder 2.

FIG. 6 shows a modification thereof, in which the operating lever 3 is provided with a through hole 9 for a box wrench at the approximate center of the arm 4, and a through groove 10 for a spanner at the root thereof. The lever 3 can be removed and used as a tool if necessary.

In this way, according to the present invention, the operating lever 3
, a concave groove 5 corresponding to the arcuate surface 4a of the arm 4
The lever can be guided by the circular arc surface 5a, and can be tilted smoothly around a predetermined pivot point determined by the center of curvature of the circular arc surface 5a, improving the stability of lever operation.
Furthermore, by tilting the operating lever 3 so that the straight surface 4b of the arm 4 follows the sloped surface 6a at the front outside of the groove 5, the arm 4 is moved between the sloped surface 6a and the front end of the circular arc surface 5a. The arm 4 can be freely inserted into and removed from the groove 5 through the opening 6 formed in the groove 5, making it easy to attach and remove the operating lever 3 from the lever holder 2. On the other hand, unless the operating lever 3 is tilted as described above, the arm 4 will not separate from the groove 5. Therefore, even if there is play in the operating lever 3 due to elongation of the operating wire 8, the arm 4
is fitted and held in the concave groove 5 to reliably prevent the operating lever 3 from falling off from the arm holder 2. Furthermore, the arm 4 protrudes behind the base of the operating lever 3, and is not attached to the operating lever 3. It does not interfere with the engagement work of the operating wire 8, and there is no problem even if the arm 4 is formed integrally with the operating lever 3, which eliminates the need for a conical collar separate from the operating lever as in the prior art. Compared to this, it has the effect of reducing the number of parts and reducing costs.

[Brief explanation of the drawing]

Fig. 1 is a side view of a conventional example, Fig. 2 is a cutaway side view of an example of the present device, Fig. 3 is a cutaway sectional view taken along the line 1, and Figs. 4 and 5 are cutaway side views illustrating its operation. FIG. 6 is a perspective view of the operating lever of a modification thereof. 1...Handle pipe, 2...Lever holder, 3
...Operation lever, 4...Arm, 5...Concave groove, 4
a, 5a...Circular surface, 4b, 5b...Right surface, 6
... Sloped surface, 6a ... Slanted surface, 6b ... Gap, 8
...Operation wire.

Claims (1)

[Scope of utility model registration request] In the case where an operating lever 3 located on the front side of the handle pipe 1 is attached to the end of the handle pipe 1 via a lever holder 2, an arm 4 extending rearward is provided at the root of the operating lever 3, and an arm 4 is provided at the root of the operating lever 3. The arm 4 is formed into a substantially semicircular shape having an inner arcuate surface 4a and an outer straight surface 4b, with the direction in which the operating wire 8 that is latched to the root portion is led out from the operating lever 3 as the inner side. A substantially semicircular groove 5 having an inner arcuate surface 5a and an outer straight surface 5b into which the arm 4 can be fitted is formed in the lever holder 2, and the front portion of the straight surface 5b of the groove 5 is formed. An inclined surface 6a is formed between the arm 4 and the straight surface 4b to form a gap 6b that gradually becomes wider toward the front.
a and the front end of the circular arc surface 5a of the groove 5, an opening 6 is provided so that the arm 4 can be inserted into and removed from the groove 5 with its straight surface 4b along the slope 6a. An operation lever device characterized in that: