JPH0118475Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a brake operating device for a bicycle, specifically, a bracket, a pivot part having a pivot hole that is pivotally attached to the bracket, and a pivot part from the pivot part to the pivot part. The present invention relates to a brake operating device for a bicycle, which comprises an operating lever having an operating section extending to one side with respect to the longitudinal direction of the operating lever, and the braking operation is performed by placing a finger on the outer surface of the operating section of the operating lever.

(Prior art) Conventionally, as this type of brake operation device, for example,
As shown in No. 56-42727, the operating lever is composed of a lever base made of a metal plate and a pair of molded bodies made of synthetic resin, and the molded bodies allow the lever base to be exposed to sanderches from both sides. It is known that the molded bodies are coated in a shape, and the opposing surfaces of the respective molded bodies are bonded and integrated.

However, in the case of this conventional structure, since the high-strength lever base is covered with a low-strength molded body, there is a problem that the strength is small relative to the cross-sectional area. I had a problem where my hands and fingers touched each other, making it feel uncomfortable.

(Problems to be solved by the invention) The present invention attempts to solve the conventional problems of low strength with respect to cross-sectional area and poor feel of the hands and fingers. By forming a lever base having a shape, fitting a synthetic resin molded body into the inner cavity of the lever base, and providing a finger rest on the molded body, the strength with respect to the cross-sectional area can be increased. , which provides good tactility.

(Means for Solving the Problems) Therefore, the present invention includes a bracket, a pivot part having a pivot hole that is pivotally connected to the bracket, and a pivot part having one side from the pivot part in the longitudinal direction of the pivot part. The bicycle brake operating device comprises an operating lever with an operating part extending in the direction, and the braking operation is performed by placing a finger on the outer surface of the operating part of the operating lever, Consisting of a lever base made of a metal plate that is open and has a substantially U-shaped cross section and is continuous inside the pivot portion and inside the operating portion, and a molded synthetic resin body that fits into the inner cavity of the lever base. , the molded body is provided with a finger hook portion that protrudes outward from the outer open end of the lever base body.

(Function) The operation lever is formed by fitting the molded body into the inner cavity of the lever base, and the finger hook portion is made to protrude to the outside from the outer open end of the lever base.

(Example) Hereinafter, an example of the brake operating device of the present invention will be described based on the drawings.

What is shown in the drawing is a brake operating device mounted near the grip of a flat handle H, which includes a bracket 2 having a lever shaft 1 fixed to the handle H, and a lever shaft 1 of the bracket 2 that is swingable. It consists of a supporting operating lever 3.

The bracket 2 consists of vertically long side walls 21 and 22 that face each other, and a front wall 23 and a rear wall 24 that connect these side walls 21 and 22.
1 and 22 have a pair of through holes 25 in the center thereof,
25, and the lever shaft 1 is supported between these through holes 25, 25, and a groove 26 for guiding the operating wire W is provided in the upper part of the front wall 23. Further, a lower portion of the rear wall 24 of the bracket 2 is opened to the outside so that the operating lever 3 can be swung. Further, the front wall 23 is provided with an adjusting screw 10 for adjusting the grip dimension between the operating portion 33 of the operating lever 3 and the handle H.

Further, the operating lever 3 is inserted into the inside of the bracket 2 from the lower opening and is pivotally connected to the lever shaft 1 by a vertically elongated pivot portion 32 having a pivot hole 31.
and an operating portion 33 extending from the lower end of the pivot portion 32 to one side with respect to the length direction of the pivot portion 32. and the outer surface 3b opposite to
The brake can be operated by placing your finger on the brake.
Further, the operating lever 3 has a proximal outer surface of the operating portion 33 curved in the direction of the inner side 3a to provide a concave portion 34 in the proximal end, so that the outer surface of the proximal end of the operating portion 33 is curved in the direction of the inner side 3a, and a recessed portion 34 is provided in the proximal end. When the operating lever 3 is swung with the ring finger placed on the outer surface 3b of the operating portion, the recessed portion 34 prevents the index finger of the hand gripping the handle H from coming into contact with the operating portion 33.
I try to prevent it.

This invention provides a brake operation device configured as described above, in which the operation lever 3 has an open outer surface 3b and a cross-section having continuous portions 35a and 35b that are continuous inside the pivot portion 32 and the operation portion 33. U
It is composed of a lever base 35 made of a letter-shaped metal plate, and a synthetic resin molded body 36 that fits into the inner cavity 35c of the lever base 35, and the molded body 36
In addition, a finger hook portion 37 is provided which projects outward from the outer open end of the lever base body 35.

In the above configuration, the lever base 35 is
A pair of pivot holes 3 on one end side as shown in Figures 1, 2, and 8.
1a, 31a and a substantially elliptical through hole 35d in the center, the continuous portion 3 is formed by bending a substantially T-shaped metal plate from the center into a substantially U-shaped cross section.
5a and 35b, and a locking piece 35e is provided at the tip of the operating portion 33a to protrude outwardly with respect to the inner surface 3a of the operating portion 33a. The edge portion is bent inward to provide a wall piece 35f.

Further, this lever base 35 is connected to the pivot portion 32a.
The inner side of the operating portion 33a and the inner side of the tip portion of the operating portion 33a are located on substantially the same plane. Further, the recessed portion 34a of the lever base 35 has an inner side 3
A is opened without being continuous, and the inner edge of this recessed portion is bent inward. The lever base body 35 is formed of a metal plate such as an iron plate, but it goes without saying that it may be formed of other non-ferrous metal plates.

Further, the molded body 36 is formed into a flat shape so that its cross-sectional shape has substantially the same shape as the lever base body 35, and is fitted into the inner cavity 35c of the lever base body 35. Further, this molded body 36 is provided with a pivot hole 31b in its pivot portion 32b, and
A protrusion 36a that fits into the opening of the recessed portion 34a is provided on the inner side extending from the pivot portion 32b to the base end portion of the operating portion 33b, while a protrusion 36a that fits into the opening of the recessed portion 34a is provided at the tip of the operating portion 33b that engages with the locking piece 35e. Engagement recess 36b
has been established. The engagement recess 36b is inclined outward in the longitudinal direction of the molded body 36 toward the outer surface 3b.

Then, the locking piece 35e is locked in the engagement recess 36b, and the molded body 36 is rotated around this locking portion in a direction approaching the lever base 35, so that the molded body 36 is inserted into the inner cavity 35c of the lever base 35. The pivot holes 31a, 31a of the lever base 35 and the molded body 36 are fitted together.
A pair of flanged bushes 4, 4 made of synthetic resin are inserted into the pivot holes 31b to integrally connect the lever base 35 and the molded body 36. The operating lever 3 is pivotally connected to the bracket 2 by inserting the lever shaft 1 into the bracket 2. In addition, the molded body 36 is attached to the locking piece 35e.
In addition to rotating around the locking part to the engagement recess 36b and fitting into the inner cavity 35c, for example, the locking piece 35e and the engagement recess 36b are inserted straight in the same direction as the inclination direction of the engagement recess 36b. It is okay to do so. Further, the lever base body 35 and the molded body 36 may be connected to each other by the lever shaft 1, and the connecting means is not particularly limited.

Further, the finger hook portion 37 is formed integrally with the molded body 36, and the base end portion of the finger hook portion 37 is formed to have approximately the same width as the lever base body 35, and the tip end portion is formed to have approximately the same width as the lever base 35. The side portion is attached to the lever base 35.
It is formed wider than the width of the camera to increase the contact area with the fingers. Further, on the inner side of the tip portion of the finger hook portion 37, fitting recesses 37a, 37a are provided to fit into the outer open end edge portion of the lever base body 35, as shown in FIGS. 5 and 6.

The illustrated bracket 2 has a semicircular curved portion 51 curved toward the other side wall 22 at the upper edge of the side wall 21 on the outside with respect to the handle H.
and a mounting part 52 that extends downward from the tip of the curved part 51 and faces the outer surface of the side wall 22, and a through hole 53 is provided in the mounting part 52, and the through hole By screwing a mounting screw 6 inserted through the lever shaft 1 into a screw hole provided at the center of the lever shaft 1, the diameter of the curved portion 51 is reduced and the bracket 2 is fixed to the handle H. . In this case, an outward flange 11 is provided at one end of the lever shaft 1 so as to protrude from the mounting screw 6.
This prevents the lever shaft 1 from moving to one side in the axial direction due to tightening. Further, the mounting portion 52 is reinforced with a pair of reinforcing ribs 54, 54 that project outward from both side edges thereof to the tip of the curved portion 51.

Further, the bracket 2 is displaced outward with respect to the center X of the attachment part of the attachment body 5 to the handle H, so that the operating lever 3 supported by the bracket 2 is brought closer to both outside sides of the handle H. has been completed. By doing so, when the fingers gripping the handle H are extended from both sides of the outer side of the handle H and hooked onto the operating part 33 of the operating lever 3, there is an advantage that the fingers can be easily hooked and it is also easier to apply a large force. Further, the rear wall 24 of the bracket 2 is connected to the side walls 21, as shown in FIGS. 3 and 9.
It is formed by two bent pieces 24a and 24b that are bent inward from 22 at right angles and overlapped, and the inner bent piece 24 is formed of these bent pieces 24a and 24b.
A through hole 24c is provided in the center of the outer bent piece 2.
Fitting protrusions 24d that are inserted into the through holes 24c are provided at the center of each of the fitting protrusions 24b.
4d into the through hole 24c, the tip of the fitting protrusion 24d is caulked to form the bent piece 24a,
24b is connected. In addition, the bent piece 24a,
24b may be connected, for example, by a set screw or by welding. As described above, the two bent pieces 24a, 24
By overlapping the parts b and joining them using the joining means, when the bracket 2 is attached to the handle H by tightening the mounting screw 6, the side wall 21 is drawn toward the side wall 22, and the box shape of the bracket 2 collapses. It has the advantage of being able to prevent this and increase strength.

The illustrated operating device also includes the bracket 2.
A cover 7 covering the mounting body 5 is also provided.

As shown in FIGS. 9 and 10, this cover 7 includes a pair of side wall portions 71a, 71b and a front wall portion 7 that cover both side walls 21, 22 and front wall 23 of the bracket 2.
1c, and a second cover body 72 extending outward from one side wall portion 71a of the first cover body 71 and covering the curved portion 51 and the attachment portion 52 of the attachment body 5. A thin hinge 73 is provided at the center of the curved covering portion 72a of the second cover body 72, and the second cover body 72
can be bent from the thin hinge 73 portion, and locking holes 74, 74 are formed in one of the side wall portion 71b and the tip portion of the second cover body 72.
and locking pieces 75, 75 are provided on the other side, and the engagement of the locking pieces 75, 75 with the locking holes 74, 74 causes the tip of the second cover body 72 to be connected to the first cover. It is formed so as to be connected to the body 71.
Further, the front wall portion 71c of the first cover body 71
A receiving portion 78 having an insertion hole 76 of the outer cylinder O for guiding the operating wire W and a split groove 77 extending outward from the insertion hole 76 is provided at the lower end portion of the outer cylinder O.

Further, the molded body 36 of the operating lever 3 has a wire hooking portion having an insertion hole 38a opening toward the outer surface 3b and a wire guide groove 38b continuous with the insertion hole 38a on the outside of the pivot portion thereof. 38, and the wall piece 35f of the lever base 35 is provided with a groove 35g that faces the hooking portion 38.

The brake operating device constructed as described above is mainly attached to a flat handle. Then, the fingers holding the handle H, for example, the middle finger and the ring finger, are placed on the operating portion 33 of the operating lever 3 and the operating lever 3 is swung in a direction approaching the handle H, thereby pulling the operating wire W and braking. be. At this time, since the concave portion 34 is provided on the outer surface of the proximal end of the operating portion 33 of the operating lever 3, it is possible to prevent the finger, for example, the index finger of the hand gripping the handle H, from coming into contact with the operating lever 3.

In the embodiment described above, the recessed part 34 is provided in the operating portion 33 of the operating lever 3, but this recessed part 34 is not necessarily required. In this case, the inside 3a of the lever base 35 is continuous over almost the entire length, or only the inside of the pivot portion and the inside of the operating portion are continuous. Furthermore, when the recessed portion 34 is provided, it goes without saying that the inner side 3a thereof may be continuous. However, by opening the inside of the recessed portion 34, there is an advantage that the recessed portion 34 can be formed without drawing.

Further, in the above embodiment, the inside of the pivot portion 32a of the lever base 35 and the inside of the tip end of the operating portion 33a are located substantially in the same plane, but they do not necessarily need to be located in the same plane. However, by positioning the lever base 35 in the same plane, the lever base 35 can be formed only by bending without drawing, which has the advantage that the lever base 35 can be processed more simply and easily. be.

(Effects of the invention) As described above, the present invention provides an operation consisting of a pivot part having a pivot hole that is pivotally attached to the bracket, and an operating part extending from the pivot part to one side with respect to the length direction of the pivot part. The lever includes a lever base made of a metal plate having an open outer surface and a substantially U-shaped cross section that is continuous inside the pivot portion and the operating portion, and a molded synthetic resin body that fits into the inner cavity of the lever base. In addition, since the molded body is provided with a finger hook portion that protrudes outward from the outer open end of the lever base, the operating lever, and by extension the entire device, can be made lightweight, and the operating lever can be cut easily. The strength against area can be increased, and the operating lever can be formed simply by fitting the molded body into the inner cavity of the lever base, so the operating lever can be easily assembled. , it is possible to make a cheaper operating lever and, by extension, a cheaper device.

Furthermore, since the structure is such that the finger rests on the finger grip part of the molded synthetic resin, the touch of the finger against the control lever during braking operation is soft, and there is no cold sensation felt when it comes into contact with metal. Therefore, the tactility can be improved accordingly.

[Brief explanation of the drawing]

1 and 2 are exploded perspective views showing an embodiment of only the operating lever in the brake operating device of the present invention;
3 is a sectional view of the device of the present invention, FIG. 4 is a sectional view taken along the line of FIG. 3, and FIG. 5 is a sectional view taken along the line of FIG.
Figure 6 is a sectional view taken along the line shown in Figure 3, Figure 7 is a side view, Figure 8 is an exploded view of the lever base only, Figure 9 is an exploded perspective view with some parts omitted, and Figure 10 is the cover. FIG. 2...Bracket, 3...Operation lever, 3a...
...inside, 3b...outer surface, 31...pivot hole, 32,
32a, 32b... Pivotal branch, 33, 33a, 33
b...Operation unit, 35...Lever base, 35c...
Inner cavity, 36...molded body, 37...finger rest.

Claims (1)

[Scope of utility model registration request] It consists of a bracket, an operating lever having a pivot part having a pivot hole that is pivotally connected to the bracket, and an operating part extending from the pivot part to one side with respect to the longitudinal direction of the pivot part, A bicycle brake operating device in which the brake is operated by placing a finger on the outer surface of the operating portion of the lever, wherein the operating lever has an open outer surface and a cross section that is continuous between the inside of the pivot portion and the inner side of the operating portion. It consists of a lever base made of a substantially U-shaped metal plate, and a synthetic resin molded body that fits into the inner cavity of the lever base, and the molded body includes:
A bicycle brake operating device characterized in that a finger hook portion is provided that projects outward from the outer open end of the lever base.