JPH03276895A - Brake operating device - Google Patents

Abstract

PURPOSE:To facilitate adjustments for a lever angle and a brake interval by providing both quick release and lever width adjustment functions for easing the adjustment of the brake interval in one device. CONSTITUTION:In a brake operating device made up of supporting an operating lever 1 pivotally on a bearing part 2a of a housing 2 by a fulcrum shaft 3, and connecting an inner wire coupling terminal 6 of a Bowden wire to a tip 1a of this lever 1, the housing is situated in space between the bearing part 2a and an operating lever mounting void 2b, and a quick release operating pin 18 is fitted with some play in parallel with the fulcrum shaft 3. In addition, a long hole 13 longer in the fulcrum axial direction as being situated in and around the pin 18 is installed at a housing front wall 2c in a through manner, and a lever angle adjusting screw 20 inserted through from this long hole 13 is orthogonally screwed in the operating pin 18. In this case, the operating pin 18 should be energized by a spring 21 in the axial direction alone, and at the said lever 1, an adjusting screw contact part 1c and a quick release screw relief part 1d are formed stepwise at the side of the operating pin 19 between the tip and the fulcrum shaft 3.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a brake operating device for a bicycle or the like.

(Prior Art) This type of brake operating device for a bicycle includes a housing attached to a handlebar, an operating lever swingably supported by a bearing part of the housing via a support shaft, and a lever that is pivoted in the return direction. The inner wire end of a Bowden wire connected to a brake shoe or the like is connected to the tip of the operating lever.

Conventionally, in order to adjust the angle of the operating lever with respect to the handlebar, that is, the lever width, there is a lever angle adjusting bolt screwed onto the front wall of the housing. In addition, when adjusting the distance between the brake shoe and the rim, or as a quick release means for conveniently removing or installing a wheel, the quick release operating piece is positioned between the housing and the operating lever. It is known that the lever is pivotably attached to the operating lever.

(This is a problem that the invention aims to solve!) By the way, in the conventional devices mentioned above, the lever width adjustment and the quick release can be performed individually and independently, but the lever adjustment can be done with one device. and cannot perform quick release.

That is, when both of the above devices are combined, the lever width adjustment bolt is screwed onto the front wall of the housing, so when the quick release is performed, the tip of the operating lever is blocked by the adjustment bolt, causing it to rapidly rotate forward. There was a problem in that the quick release function could not be used effectively.

The present invention was made in view of the above-mentioned circumstances, and
The purpose is to provide a brake operating device that has a quick release function and a lever width adjustment function in one device.

(Means for Solving the Problems) In the present invention, the following technical measures were taken in order to achieve the above object.

That is, the present invention provides a brake operating device in which an operating lever 1 is swingably supported by a support shaft 3 on a bearing portion 2a of a housing 2, and an inner wire connecting terminal 6 of a Bowden wire is connected to a tip 1a of the lever 1. In the housing 2, a quick release actuation pin 18 is loosely fitted through the housing 2 in parallel with the support shaft 3, and is located between the bearing portion 2a and the operation lever mounting space 2b. 2c is provided with an elongated hole 13 located near the pin 18 and extending in the direction of the spindle axis, and a lever angle adjustment screw 20 inserted through the elongated hole 13 is screwed into the operating pin 18 orthogonally. , the actuation pin 18 is biased in one direction in the axial direction by a spring 21, and the lever 1 has an adjustment screw abutment part 1c and a quick release screw relief part 1d on the actuation pin 18 side between the tip and the support shaft 3. It is characterized by being formed in a step-like manner.

(Function) According to the present invention, normally the quick release actuation pin 18
is biased in one direction by a spring 21, and the lever angle adjustment screw 20 is in contact with the adjustment screw abutment part 1c of the operating lever 1. When adjusting the lever angle, the lever angle can be adjusted by rotating the screw 20. The distance between the lever 1 and the handlebar 15 can be changed. For quick release, when the quick release operating pin 18 is pushed in against the elastic force of the spring 21, the adjustment screw 2
0 moves inside the elongated hole 13 and its tip is located in the screw relief part 1d of the operating lever 1, so that the tip of the operating lever 1 moves the inner wire 5 into the housing by the elastic force of the return spring 4 and/or the arch spring. The inner wire 5 is rotated in the direction of pulling back from the brake pad 2 and comes into contact with the operating pin 18, thereby loosening the inner wire 5 and widening the gap between the brake shoes, making it easier to remove and install the wheel.

Therefore, when restoring the operating lever 1 to the set state, when the operating lever 1 is pulled toward the handlebar 15 side, the adjustment screw 20 escapes from the screw release part 1d of the operating lever 1, so that the biasing force of the spring 21 The actuating pin 18 is pushed in a direction opposite to the pushing direction described above,
The adjustment screw 20 moves within the elongated hole 13 and comes into contact with the screw abutment portion 1c of the operating lever 1, and becomes set.

(Example) Embodiments of the present invention will be described below based on the drawings.

In the drawings, reference numeral 1 denotes a bicycle brake operating lever formed in a substantially square shape, with a shaft support 1b protruding from the tip la.
The operating lever 1 is pivotably supported via the operating lever 1, and the operating lever 1 is biased toward the distal end by a return spring 4. A connecting member 7 that connects the connecting terminal 6 of the inner wire 5 of the Bowden wire is swingably attached to the tip 1a of the operating lever 1 via a pin 8. Further, on the front surface between the tip 1a of the operating lever 1 and the shaft support lb, an adjustment screw abutment 1c is provided.
A concave screw relief portion 1d is provided.

Note that the support shaft 3 is fixed to the housing 2 with a nut 9.

The housing 2 is provided with a mounting screw hole 11 for the outer holder 10 and a split groove 12 for inserting the inner wire at the tip of the lever mounting space 2b, and a long hole 13 for inserting an adjustment screw in the front wall 2c. A pin insertion hole 14 is provided in a penetrating manner in the axial direction of the support shaft 3 adjacent to the elongated hole 13 . Further, a bracket portion 16 for attaching to the handle par 15 is formed on the housing 2, and is fixed to the handle par 15 by a fixing screw 17 screwed into an ear portion 16a of the bracket portion 16. It has become.

Reference numeral 18 denotes a quick release actuation pin, which has a screw hole 19 provided slightly toward one end from the axial center, and a lever angle adjustment screw 20 is screwed into the pin insertion hole 14 so as to be movable in the axial direction. The pin 18 has the housing 2
A coiled spring 21 is externally fitted between the inner wall and the adjusting screw 20, and urges the adjusting screw 20 to constantly contact the inner wall of the housing 2.

Note that 22 is an outer receiver fixing nut, and both the nut 22 and the outer receiver 10 have a split groove 23 for inserting the inner wire.
．． 24, and the housing 2 is provided with a hole 25 at the end of the split groove 23, 24 into which the coupling terminal 6 of the inner wire 5 is inserted.

In the above embodiment, FIGS. 1 and 2 show a normal brake setting state, in which the tip of the lever angle adjustment screw 20 is in contact with the adjustment screw abutment part 1c of the operating lever 1, and the screw 20 is Since it is pressed against the inner wall of the housing 2 by the spring 2.1, the screw 20 does not move even when the bicycle is braked, that is, when the operating lever 1 is pulled toward the handlebar 15, the brake center state is maintained.

When adjusting the width of the operating lever 1, when the adjusting screw 20 is screwed in, the lever 1 and the handle par 15
If the adjustment screw 20 is unscrewed, the distance will become wider.

Therefore, when it becomes necessary to loosen the inner wire 5, such as when removing a wheel for tire replacement, etc., when the quick release actuating pin 20 is pushed in the direction shown by arrow A in FIG. The inner wire 5 is pulled out by the elastic force of the return spring 4 and the arch spring (not shown). The inner wire 5 is rotated in the forward direction to the state shown in FIGS. 3 and 4, and the inner wire 5 is loosened.

To return to the brake set state again, press operation lever 1.
When the adjusting screw 20 is pulled toward the handlebar 15 side, the adjusting screw 20 moves inside the elongated hole 13 and its tip escapes from the screw release part 1d of the operating lever 1, and the biasing force of the spring 21 causes the operating pin 18 to move as shown in FIG. The adjustment screw 2o is moved in the direction shown by arrow B, and the adjustment screw 2o is brought into contact with the inner wall of the housing 1, and returned to the position shown in FIG.

Then, when you release your finger from the operating lever 1, the operating lever 1 is pulled back forward by the return spring 4, etc., and as shown in FIG. return to the state.

The present invention is not limited to the above-mentioned embodiment. For example, the inner wire coupling terminal 6 can be removably fitted into and connected to the tip 1a of the operating lever 1 without using the connecting member 7.

(Effects of the Invention) As described above, in the present invention, the operating lever 1 is swingably supported by the support shaft 3 on the bearing portion 2a of the housing 2, and the inner wire connecting terminal 6 of the Bowden wire is attached to the tip 1a of the lever 1. In the brake operating device connected to the housing 2, a quick release actuation pin 18 is located between the bearing portion 2a and the operation lever mounting space 2b, and has a penetrating shape parallel to the support shaft 3. A long hole 13 is provided in the front wall 2c of the housing near the pin 18 and extends in the axis direction of the spindle, and a lever angle adjustment screw 20 inserted through the long hole 13 is inserted into the operating pin. 18, the operating pin 18 is biased in one direction in the axial direction by a spring 21, and the lever 1 has an adjustment screw abutment 1c between the tip and the support shaft 3 on the operating pin 18 side. And since the quick release screw relief part 1d is formed in a stepped shape, it is possible to have a lever angle adjustment function and a quick release function with one device, and to effectively perform them. Moreover, it has a simple structure, is extremely easy to operate and assemble, and can be obtained economically and can improve quality.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway plan view, FIG. 2 is a side view of the same, FIG. 3 is a partially cutaway plan view in a quick release state, and FIG. It is a sectional view taken along the line A-A in the figure. DESCRIPTION OF SYMBOLS 1... Operating lever, 1a... Tip, 1c... Adjusting screw part, 1d... Screw relief part, 2... Housing, 2a... Bearing part, 2b... Operating lever installation empty space,
2c... Front wall, 3... Support shaft, 5... Inner wire, 6... Inner wire coupling terminal, 13... Long hole, 1
8...Quick release operating pin, 20...Lever angle adjustment screw, 21...Spring.

Claims (1)

[Claims] (1) An operating lever (1) is swingably supported by a support shaft (3) on a bearing part (2a) of a housing (2), and an inner wire coupling terminal of a Bowden wire is attached to a tip (1a) of the lever (1). (6), in which the housing (2) has a quick release actuation pin (18) located between the bearing portion (2a) and the operation lever mounting space (2b); ) is loosely fitted penetratingly in parallel with the support shaft (3), and the pin (1
8) A long hole (13) located nearby and long in the direction of the spindle axis is provided in a penetrating manner, and the lever angle adjustment screw (20) inserted through the long hole (13) is perpendicular to the operating pin (18). The actuating pin (18) is biased in one axial direction by a spring (21), and the lever (1) has a portion between the tip and the support shaft (3) on the actuating pin (18) side. , the adjustment screw abutment part (1c) and the quick release screw relief part (1c).
A brake operating device characterized in that (d) is formed in a stepped shape.