JPS6239998Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating lever that mainly operates a transmission of a bicycle, and more particularly to an operating lever that locks one end of an operating wire and performs pulling and relaxing operations on the wire.

Generally, an operating lever for operating a bicycle transmission has a cylindrical boss part a with a shaft hole c, as shown in FIG. 6, and an operating part b extending radially outward from one side of the boss part a. It is composed of. Then, a concave locking portion d of the operating wire w is attached to the boss portion.
and a guide hole e opening in the locking part d, and a guide groove f extending from the guide hole e along the outer periphery of the boss part, and inserting the wire w from the locking part d into the guide hole e. , a locking body g provided at one end of the wire w is locked to the locking portion d.

However, in this conventional boss part a, a guide hole e is connected in an arc shape to a guide groove f formed along the outer periphery of the boss part a, and
Since the concave locking portion d is extended in the tangential direction of this circular arc portion and is provided at the tip of this extension, the concave locking portion d is open to the side surface of the boss portion a and is concealed. Therefore, when operating the lever, the finger of the operating hand, mainly the side part of the index finger, interferes with the opening of the concave locking part d, and when operating the lever, the operator In addition, since the guide hole e has an arcuate portion, it has poor workability and has a short straight line length, so when operating the lever, the concave locking portion Unreasonable force acts on the joint between the hook g and the wire w that engages the wire w, and the wire that engages the guide groove f, reducing durability and causing the wire to break due to frequent use. There was a problem.

An object of the present invention is to extend a guide hole continuous with a guide groove in a tangential direction of the guide groove toward an operating part of an operating lever, and to provide a recessed part or a through hole in the operating part. By opening the wire locking part in the through hole, the locking part is provided to avoid the position where the finger of the operating hand interferes when operating the lever, solving the problem of causing pain to the operator. However, the durability of the wire can also be improved.

The present invention has an operating lever that locks one end of an operating wire and performs pulling and loosening operations of the wire, and includes a boss portion having a shaft hole and an operating lever extending outward from the boss portion on one side in the radial direction. A guide groove for the wire is provided on the outer surface of the boss portion on the opposite side to the extending direction of the operating portion, and the operating portion is open on at least one side in the operating direction, and A recessed portion or a through hole extending in the extending direction of the guide hole is provided, and a guide hole for the wire is provided that communicates linearly from one end of the guide groove to the recessed portion or the through hole, and the recessed portion or the through hole of the guide hole is provided. By providing a locking portion for the wire that opens into the recess or through hole in a communicating portion with the hole, and providing a closing body in the recess or through hole, the operation wire can be operated by the locking portion. This makes it possible to eliminate the influence and improve the grip comfort of the operating section, while also improving the durability of the wire.

Embodiments of the operating lever of the present invention will be described below based on the drawings.

The operating lever of the present invention consists of a cylindrical boss portion 1 having a shaft hole 1a and an operating portion 2 extending radially outward from one side of the boss portion 1.
A long hole-shaped through hole 3 that opens on both sides 2a and 2b in the operation direction The one shown in the drawing has a structure in which a closing body 5 for closing the through hole 3 is attached to the through hole 3 by fitting, for example, so as to hide the locking part 4. be.

Therefore, the through hole 3 provided in the operating section 2 is provided to avoid the position where the thumb of the hand that grips the operating section 2 comes into contact with, so that when the operating section 2 is grasped, the thumb does not come into contact with the through hole 3. This is done so that it comes into contact with the boss portion 1 side. Further, as shown in FIG. 2, this through hole 3 has an inner circumferential surface inclined, and the locking portion 4 is opened at the inclined surface portion. Furthermore, an engaging portion 6 for locking the closure body 5 is provided at the top of the inclined surface portion.

Further, the guide hole 7 is formed in the tangential direction of the guide groove 8 provided around the outer periphery of the boss portion 1, and
The locking portion 4 provided at the tip of the guide hole 7 extends in the direction of The opening is made in the inner wall of the through hole 3 on the boss side.

The closure body 5 is made of a flexible material with cushioning properties, such as rubber, so that it feels good when it comes into contact with fingers gripping the operating section 2; This closing body 5 is provided with a locking piece that engages with the engaging portion 6 of the through hole 3,
The engagement of this locking piece with the engaging portion 6 prevents the closure body 5 from being accidentally removed.

In the figure, 8 is a guide groove for the wire W provided on the outer surface of the boss portion 1 on the opposite side to the extension direction of the operating portion, and 9 is a lever shaft 1 fixed to the bicycle frame F.
0, 11 is a tightening screw for attaching the operating lever to the lever shaft 10 and imparting a predetermined rotational resistance to the lever, 12 is a cap, and 13 is an adapter, and this adapter 13 and the boss are connected together. A regulating means 14 is provided between the control lever 1 and the control lever 1 for regulating the operating range of the operating lever.

The operating lever constructed as described above is rotatably supported by fitting the shaft hole 1a into the lever shaft 10 of the fixing member 9 fixed to the bicycle frame F, as shown in FIG. Then, the closing body 5 is connected to the operating section 2.
Insert the operating wire W from the through hole 3 and the locking portion 4 into the guide hole 7, and attach the hook K provided at one end of the wire W to the locking portion 4. Then, the closing body 5 is fitted into the through hole 3 to close the through hole 3. Due to this closure, the locking portion 4 can be closed.
It is possible to reliably prevent rainwater from entering the locking part 4, and when the operating part 2 is grasped and the lever is operated, the fingers grasping the operating part 2 touch the closure body 5 with cushioning properties. Because they make contact, the lever feels good when you operate it.

In the embodiment described above, the operating portion 2 is provided with the through hole 3, but instead of this through hole 3, as shown in FIG. A recessed portion 30 may be provided, the locking portion 4 may be opened in the recessed portion 30, and the closing body 5 may be attached. Moreover, the through hole 3
Alternatively, the recessed portion 30 is preferably formed in the shape of a long hole extending along the length direction of the operating portion 2, but its shape is not particularly limited.

Further, when the closing body 5 is provided as described above, it is preferable that the closing body 5 is made of a material that has cushioning properties, but it may also be made of a material that does not have cushioning properties such as synthetic resin or light alloy. It's good. Further, when this closing body 5 is held, for example, by the locking body K and the locking body K is inserted into the locking part 4, the closing body 5 is fitted into the through hole 3 or the recessed part 30. You can do it thoroughly, or
As shown in FIG. 4, it may be divided into two parts, and these divided closure bodies 51, 52 may be connected by a flexible, for example, U-shaped connecting body 53. In this case, the fourth
As shown in the figure, the operating portion 2 is provided with a recessed part 21 for receiving the connecting body 53, and the connecting body 53 is fitted into the recessed part 21, and the divided closing body 5
1 and 52 are fitted into the through hole from both open openings of the through hole 3, and are locked by a locking means consisting of, for example, a locking piece 15 and a concave engaging portion 16 that engages with the locking piece. be. Further, although it is preferable that the closure body 5 is locked by a locking means consisting of a locking piece and an engaging portion that engages with the locking piece, it may be attached by other attachment means such as adhesive.

The operating lever of the present invention is mainly used as a shift operating lever for operating the transmission of a bicycle, but it may also be used as an operating lever for operating the brake of a bicycle.

As described above, the present invention provides a guide groove for the wire on the outer surface of the boss portion opposite to the direction in which the operating portion extends, while opening the operating portion on at least one side in the operating direction, and A recessed portion or a through hole extending in the extending direction of the operating portion is provided, and a guide hole for the wire is provided that communicates linearly from one end of the guide groove to the recessed portion or the through hole, and the recessed portion of the guide hole is provided. Alternatively, a locking portion for the wire that opens into the recess or the through hole is provided in a communication portion with the through hole, and a closing body is provided in the recess or the through hole, so that the wire guide hole is not connected to the boss. Since the guide groove provided in the section extends linearly in the direction of the operating section in the tangential direction, it is possible to improve the workability of forming the guide hole, and also to make it easier to insert the wire into the guide hole. Since it can be made longer, it is possible to reduce the application of excessive force to the joint between the wire and the locking body that engages with the locking portion and the wire portion that engages with the guide groove, thereby improving the durability of the wire. This makes it possible to reliably prevent the wire from breaking even when used frequently.

Furthermore, since the locking portion of the wire can be opened into the recess or through hole without being exposed to the outside of the side of the boss portion, it is possible to avoid interference of fingers with the opening of the locking portion when operating the lever. , fingers of the operating hand,
Mainly because the index finger does not interfere with the opening,
It does not cause any pain to the operator.

Moreover, since the locking portion can be hidden by providing a closing body in the recess or through hole, it is possible to prevent rainwater from entering the locking portion, and therefore, it is possible to prevent the wire from locking to the locking portion. By preventing the parts from rusting, it is possible to prevent a decrease in the strength of the operating wire and a decrease in transmission efficiency.

Furthermore, if the closure body is made of a material with good cushioning properties, it becomes possible to provide a lever that feels good in the grip.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing the operation lever of the present invention in use, FIG. 2 is a longitudinal sectional view of the operating lever of the invention,
FIG. 3 is a sectional view showing another embodiment, FIGS. 4 and 5 are still further embodiments, FIG. 4 is an exploded perspective view, FIG. 5 is a sectional view, and FIG. 6 is a sectional view. It is an explanatory view showing a conventional example. 1...Boss part, 1a...Shaft hole, 2...Operation part,
3... Through hole, 30... Recessed part, 4... Locking part,
W... Operation wire.

Claims (1)

[Scope of utility model registration request] An operating lever that locks one end of an operating wire and performs pulling and loosening operations of the wire, comprising a boss portion having a shaft hole and an operating portion extending outward from the boss portion on one side in the radial direction, A guide groove for the wire is provided on the outer surface of the boss portion opposite to the direction in which the operation portion extends, and is open to at least one side of the operation portion in the direction of operation thereof and extends in the direction in which the operation portion extends. A recessed portion or a through hole is provided, and a guide hole for the wire is provided that communicates linearly from one end of the guide groove to the recessed portion or through hole, and a portion of the guide hole communicating with the recessed portion or through hole is provided. An operating lever for a bicycle, characterized in that a locking portion for the wire is provided that opens in the recessed portion or through hole, and a closing body is provided in the recessed portion or through hole.