JPH022972Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a control lever device, particularly a brake control lever device for a bicycle.

(Prior Art) The conventional art will be described with reference to FIG. 1, which is a perspective view of the appearance of an operating lever device attached to a drop handlebar of a bicycle, and FIG. 8, which is a cross-sectional view taken along line A--A of FIG. The structure of the connector 1 includes a cylindrical body 1a and a cylindrical body short shaft portion 1b having a smaller diameter protruding from both ends of the cylindrical body 1a, and a terminal (not shown) in the center of the body 1a. As an engagement part, an engagement hole 1c, which is a through hole that is perpendicular to the axis and has a step on the inner circumferential surface, is bored, and a notched groove 1d that extends from the circumferential side of the body 1a to the engagement hole 1c. has been established. As shown in the figure, the connector 1 is formed into an inverted U-shape in cross section at the proximal end of a lever 2 which is rotatably supported by a lever shaft 4 between opposing side walls 15 of a housing 3 fixed to a handle 11. Connector support holes 2a, 2a located inside and penetrating opposing side walls 14 facing in the lever axis direction at the base end are provided with short shaft portions 1b at both ends thereof,
1b is pivotally supported so that it is built into the operating lever device. Further, the lever shaft 4 is provided with a detachable and rotatable midway portion of the auxiliary lever 7, and the tip of the auxiliary lever 7 is partially connected to the upper rear surface of the base end of the lever 2 and the upper portion of the housing 3. The handle 11 extends to be interposed between the handle 11 and the front surface.
By grasping and approaching the operating portion 7a of the lever shaft 4, the auxiliary lever 7 rotates, and in conjunction with this, the lever 2 is rotated.
The connector 1 inserts a terminal (not shown) inserted through the inner insertion hole 3b and the outer receiver 9 provided in the upper part of the housing 3 in FIG. 1 into the engagement hole 1.
By engaging with the stepped portion c, when the lever 2 or the auxiliary lever 7 is operated, the operation is transmitted to the inner wire 12a. At this time, the connector 1 pivots within the base end of the lever 2, contributing to smooth operation.

(Problem to be solved by the invention) The connector 1 consists of a cylindrical body part 1a made of light alloy and short shaft parts 1b, 1b of a cylindrical body with a smaller diameter. Both short shaft parts 1 from round bar material
b, 1b are cut out, and a step is required for the engagement hole 1c, so a through hole consisting of two diameters, large and small, must be drilled, and the notch groove 1d must be cut, which requires a large number of man-hours and is costly. Not only is this uneconomical, but because it is made of light alloy, it can break when a large load is applied during brake operation, leading to serious accidents. Therefore, in order to save the above-mentioned man-hours, it is possible to manufacture by die-casting using a light alloy material, but the problems of impreciseness and strength still remain. In addition, the tip of the auxiliary lever 7 extends so that a part thereof is interposed between the upper rear surface of the base end of the lever 2 and the upper front surface of the housing 3, so that it is difficult to remove the auxiliary lever 7. At this time, the lever 2 is pulled by the inner wire 12a and rotated around the lever shaft 4 by the amount that a part of the tip of the auxiliary lever 7 is interposed. For this reason, the grip part of lever 2 and handle 1
1, it becomes very difficult to grip the lever 2, and the distance between the brake shoes of a brake device (not shown) linked to the inner wire 12a increases, requiring readjustment.

Therefore, an object of the present invention is to provide an operating lever device that solves all of the above problems.

(Means for solving the problem) The technical means taken to achieve the above object is that the proximal end of the lever is rotatably connected to a housing fixed to the handle via a lever shaft. A body part having an engaging part for engaging the inner wire terminal of the Bowden wire between opposing side walls spaced apart in the lever axial direction at the base end of the lever, and a body part having an engaging part for engaging the inner wire terminal of the Bowden wire, and a support hole formed in each of the opposing side walls at both ends of the body part. A connector is provided, comprising a short shaft portion that is inserted and supported;
In the operating lever device, the lever shaft is provided with an auxiliary lever that is removably and rotatably interlocked with the lever, wherein the connector is made of an iron-based material, and the body portion and the short shaft portion are made of a cylindrical body. The auxiliary lever is provided with an interlocking piece that is removably inserted into the connector from one end so that the lever is rotated by the rotational operation of the auxiliary lever.

(Example) Fig. 1 is a perspective view of the external appearance of the operating lever device attached to the drop handle, Fig. 2 is a cross-sectional view taken along the line A-A, and Fig. 3 is a cross-sectional view taken along the line B-B. The explanation will be given based on FIGS. 6 to 6 and FIG. 7, which is an explanatory diagram.

First, one embodiment will be described in detail based on FIGS. 1, 2, 3, and 7. As shown in the drawings, the operating lever device having a connector 1 according to the present invention has its main parts including a mounting handle 5, a housing 3, a lever shaft 4, an auxiliary lever 7, and a lever 2. Each component will be explained below. The mounting band 5 is formed by forming a band-shaped sheet metal into an occluded circle, with both ends of the occluded portion being substantially parallel to each other to form projecting pieces 5a and 5b. 5a, 5b are provided with tightening holes 5a, 5b passing through them, and these are tightened with a tightening tool 5c such as a bolt, nut or screw, and furthermore, in any other position of the other parts, as shown in the figure, a tightening hole 5a, 5b is provided. A screw hole 5d is provided for the mounting band 5 to be pulled up and fastened to the housing 3. The housing 3, which is attached to the handle 11 via the attachment band 5, has an opening 3a on the front surface, an insertion hole 3b for the inner wire 12a and an outer socket 9 communicating with the insertion hole 3b on the upper part, and the lever shaft 4 is attached to the housing 3 as an axis. Housing 3 that passes through both sides for support
It has a box shape with holes c and 3c. Next, the lever shaft 4 is supported horizontally in the housing holes 3c, 3c.
is a cylindrical body with a hole 4a for a set screw, which is a blank hole, for pulling up and fastening the mounting band 5 perpendicular to the axis thereof, and a screw thread is formed concentrically in the axial direction from one end surface. A mounting screw hole 4c is provided, which is a blind hole cut through the hole 4c, for pivotally mounting the auxiliary lever 7. The auxiliary lever 7, which is pivotally mounted on the lever shaft 4, is almost similar to a well-known one and is used for drop handles, and its shape is L-shaped. When attached to the drop handle 11, the operating portion 7a is substantially parallel to the handle straight rod portion 11a, and the lever portion 7 extends perpendicular thereto, that is, parallel to the U-shaped curved rod portion 11b of the drop handle 11.
b, an auxiliary lever fulcrum hole 7c in the middle of the lever portion 7b;
A round rod-shaped interlocking piece 7d is provided at the tip end substantially parallel to the operating portion 7a. Next, the lever 2 has an L-shaped appearance, and the lever shaft 4 is inserted into the left and right opposing side walls 14 of the proximal end, which have a U-shaped cross section, so that the lever shaft 4 can be used as a fulcrum when operating the lever. Lever shaft holes 2b, 2b are provided, and L
Support holes 2a and 2b for pivotally supporting the connector 1 according to the present invention are provided near the bent portion of the letter. Next, when the connector 1 according to the present invention is constructed, a cylindrical body 1a and short shaft portions 1b, 1b of a cylindrical body having a smaller diameter are protruded on the same axis at both ends of the body 1a. Therefore, the inner periphery of the body portion 1a and the inner peripheries of both short shaft portions 1b, 1b form a communicating cavity,
Further, an engagement hole 1c is provided in the center of the body 1a as an engagement portion for the terminal 13, which is a through hole that is perpendicular to the axis and consists of holes 1c' and 1c'' of two diameters, large and small. A notched groove 1d is provided from the side surface to reach the engaging hole 1c.This connector 1 is constructed as shown in FIG. The part that will become the diameter hole 1c', the small diameter hole 1
After punching the part that will become c'' and the part that will become the notch groove 1d by press working, it is rolled into a cylindrical shape as shown in , and then pressurized from the direction shown by the arrow to form the short shaft part. 1b and 1b are formed as shown in .In addition, the process is performed to form a large diameter hole 1c' and a small diameter hole 1c' using pipe material.
1c'' and a cutout groove 1d.The respective members constituting the main parts of the operating lever device have been described above, and these are combined as follows to configure the operating lever device. The connector 1 is pivotally supported with its short shaft portions 1b, 1b at both ends in the connector support holes 2a, 2a of the lever 2, and the lever 2 has its lever shaft holes 2b, 2b supported by hard synthetic resin flanged bushes ( The auxiliary lever 7 is inserted into the housing holes 3c, 3c of the housing 3 via the bushings (hereinafter referred to as bushings) 8, 8, and is rotatably supported on a horizontally suspended lever shaft 4.Next, the auxiliary lever 7 is Piece 7d
is inserted into the hollow inner periphery of one short shaft portion 1b of the connector 1, and the auxiliary lever fulcrum hole 7c is screwed into the mounting screw hole 4b via bushes 8, 8 mounted on the outer periphery of the lever shaft 4. It is mounted by fitting screws 4c. Next, the mounting band 5 is pulled up into the housing 3 by screwing the fastening screw 6 inserted into the set screw hole 4a of the lever shaft 4 horizontally suspended in the housing 3 into the fastening screw hole 5b of the mounting band 5. It is concluded by. Then, the housing 3 expands the distance between the protruding pieces 5a, 5a of the mounting band 5 and holds the curved rod part 11b of the drop handle 11, and then a tightening hole 5 is inserted through the protruding pieces 5a, 5a.
The operating lever device is attached to the curved portion 11b of the drop handle 11 by tightening with a fastener 5c such as a bolt, nut or screw inserted through the holes 5b and 5b. Thereafter, as shown in FIG. 3, the outer wire 12b of the Bowden wire 12 is received by the outer receiver 9, and the terminal 13 at the tip of the inner wire 12a, which is inserted into the outer receiver 9 and through the inner wire insertion hole 3b, is connected to the connector. 1 through the notch groove 1d and engages with the engagement hole 1c. What is noteworthy here is that the connector 1 is made up of a cylindrical body 1a and short shaft portions 1b, 1b of a cylindrical body with a smaller diameter protruding from both ends of the body 1a on the same axis. Since the inner periphery of the body 1a and the inner peripheries of both the short shaft parts 1b, 1b are in communication with each other, the interlocking piece 7d of the auxiliary lever 7 is connected to the short shaft part 1b.
The interlocking piece 7c can be inserted into the inner periphery of the
The lever 2 as shown by the imaginary line in FIGS. 1 and 8
There is no need to mount it in a sandwiched manner between the proximal end of the housing 3 and the upper part of the opening 3a of the housing 3.

Note that, as shown in FIG. 4, both short shaft portions 1 are
A screw thread is cut on the inner periphery of the terminal 13, and when the auxiliary lever 7 is removed, the screw 10 is screwed into the thread via a spring washer to secure the terminal 13.
As shown in FIG. By making it possible to insert bolts and nuts 10' into the inner circumferences of the short shaft parts 1b, 1b and the body part 1a, the terminal 13 is prevented from accidentally slipping out from the engagement hole 1c of the connector 1. You may also do this. Also, as shown in Figure 6,
Both the short shaft parts 1b, 1b may have the same diameter as the body part 1a, and the peripheral edges of both the short shaft parts 1b, 1b may be caulked to prevent the connector 1 from coming off the lever 2, and the auxiliary lever 7 may be removed. Sometimes, the openings at both ends may be covered with synthetic resin caps or the like.

(Effect of the invention) The invention is based on the inner wire terminal 1 of Bowden wire.
body portion 1a having engaging portions 1c and 1d that engage 3;
The connector 1 is made of an iron-based material and has a short shaft portion 1b rotatably inserted and supported in a support hole 2a formed between the opposing side walls 14 of the housing 3 at both ends thereof. 1a and short shaft portions 1b, 1b
Since it is constructed in a cylindrical shape, it is extremely easy to manufacture and an inexpensive operating lever device can be provided. In particular, in the present invention, the connector 1 is made of iron-based material, so it is safe and will not break even if a large load is applied during brake operation. Further, since the body portion 1a and the short shaft portion 1b are cylindrical bodies, an interlocking piece 7d for rotating the lever 2 by rotating the auxiliary lever 7.
can be inserted into the connector 1 from one end side and engaged, and the interlocking piece 7d can be attached using the connector 1. As in the past, a part of the tip of the auxiliary lever can be inserted into the base end of the lever. Therefore, even if the auxiliary lever 7 is removed, the distance between the gripping portion of the lever 2 and the handle 11 does not increase. Further, there is no need to separately form a hole or the like for engaging the interlocking piece 7d.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an external perspective view of an operating lever device attached to a bicycle drop handlebar equipped with a connector of the present invention, and FIG. 3 is a sectional view taken along the line B-B of FIG. 1, FIGS. 4 to 6 are plan sectional views showing modified examples, and FIG. 7 shows the manufacturing process of the connector of the present invention. The explanatory drawing, FIG. 8, is a sectional view of a main part of an operating lever device having a conventional connector. 1...Connector, 1a...Body part, 1b...Short shaft part, 1c...Engagement hole, 1d...Notch groove, 12,1
2a, 12b...Bowden wire, 13...Inner wire terminal.

Claims (1)

[Scope of Claim for Utility Model Registration] A base end of the lever is rotatably connected to a housing fixed to the handle via a lever shaft, and between opposing side walls of the base end of the lever that are spaced apart in the lever axis direction, A connector is provided, comprising a body portion having an engaging portion for engaging an inner wire terminal of the Bowden wire, and short shaft portions at both ends thereof, which are rotatably inserted and supported in support holes formed in each of the opposing side walls. and an auxiliary lever interlocking with the lever is detachably and rotatably provided on the lever shaft, wherein the connector is made of an iron-based material, and the body portion and the short shaft portion are cylindrical. An operating lever device, characterized in that the auxiliary lever is provided with an interlocking piece that is removably inserted into the connector from one end side so that the lever is rotated by the rotational operation of the auxiliary lever.