JP2523855Y2 - Brake lever device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a brake lever device capable of operating two or more brake devices simultaneously with one brake lever.

(Prior Art) Conventionally, this kind of brake lever device has been adopted in a tandem bicycle. As shown in FIG. 9, this tandem-type bicycle is a multi-seater bicycle provided with a plurality of handles, saddles, crank gears, etc., each having a weight of two or more. Since it is large and the kinetic energy is also large, it is necessary to improve braking performance in order to enhance safety. Therefore, a tandem bicycle is generally equipped with three brake devices, a caliper brake A for front wheels, a caliper brake B for rear wheels, and a band brake C for rear wheels, as shown in FIG. These brakes A, B, and C are linked to brake lever devices a, b, and c, respectively, by Bowden cables (not shown). The brake lever devices b and c have two Bowden cables so that the two devices B and C can be operated simultaneously.

As a conventional brake lever device of this kind,
There is one disclosed in Japanese Patent No. 64691. In this device, a lever that is rotatably supported via a support shaft on a lever housing having an opening through which an inner wire is inserted at the end supports an inner wire engaging element rotatably in parallel with the support shaft. Is to be done. Then, a bracket having an outer receiving portion is fixed to the housing opening in parallel with the support shaft, the inner wire engaging member is projected outward of the lever, and an inner wire receiving portion is provided at the projecting portion, and the inner wire receiving portion is provided on the inner wire receiving portion. The inner wire for inserting the outer receiving portion is locked.

In the conventional tandem bicycle brake lever device, the two inner wires are arranged apart from each other, and the engaging members fixed to the respective ends are individually locked to the inner wire receiving portions. The receiving part is exposed from the brake lever main body.

(Problem to be Solved by the Invention) In the above-mentioned conventional technology, the two inner wires and the receiving portions thereof are separated and exposed, so that they are poorly coherent, easily come into contact with clothes, and are easily exposed to rainwater. is there.

This problem can be solved to some extent by arranging the two inner wires and the receiving portion inside the brake lever. However, when the two inner wire engaging members are received, the receiving portion becomes large and the brake lever becomes large. Raises another problem.

The present invention has been made in view of the various points as described above, and arranges a plurality of inner wires and their receiving members inside the brake lever, binds the plurality of inner wires with one engaging element, To provide a brake lever device that can not only reduce the size of a brake lever but also prevent breakage of an engaging element, breakage of an inner wire, and the like by guiding a plurality of inner wires to a binding arrangement relationship before binding. Aim.

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

That is, in the present invention, first, the brake lever main body 3 is rotatably attached to the bracket 2 mounted on the handlebar 1 via the support shaft 4 and the ends of the outer 13 of the plurality of Bowden cables 11. Outer locking part 19 that supports
Are provided, and one end of the inner wires 12 of the plurality of Bowden cables 11 to be inserted into the bracket 2 is disposed close to each other and one engaging element 26 is provided.
The brake lever body 3 has an inner engaging portion 24 for supporting the engaging element 26 and an inner insertion hole 23 for inserting the plurality of inner wires 12 at a position away from the support shaft 4. An inner receiving member 21 is provided, and all the inner wires 12 are connected between the outer locking portions 19 and the inner locking portions 24 by the engaging elements 26.
Is provided with an inner guide means for inserting and guiding in substantially the same state as the fixed arrangement state.

Secondly, the brake lever body 30 is rotatably mounted on a bracket 31 mounted on a handlebar 33 via a support shaft 32, and a plurality of Bowden cables are provided.
One outer receiving member 44 is provided in which outer locking portions 46 supporting the end portions of the outer 13 of 11 are provided side by side, and the inner wires 12 of a plurality of Bowden cables 11 inserted into the bracket 31 are provided.
Are fixed to one engaging element 56 in a state of being close to each other, and the inner locking portion 54B supporting the engaging element 56 and the inner wire 12 are inserted into the brake lever body 30 at a position away from the support shaft 32. One inner receiving member 54 having the inner insertion hole 70 is provided, and the outer tension adjustment for removing the slack of the outer 13 by adjusting the distance between the outer receiving member 44 and the inner receiving member 54 on the bracket 31. Means are provided for the outer locking portion
An inner guide means for inserting and guiding all the inner wires 12 in substantially the same state as the close arrangement state in which the inner wires 12 are fixed to the engagement element 56 is provided between the inner engagement portion 54 and the inner engagement portion 54B.

(Operation) According to the present invention, when the brake lever bodies 3 and 30 are operated, the lever bodies 3 and 30 rotate around the support shafts 4 and 32,
When the inner wire engaging elements 26 and 56 are pulled, the plurality of inner wires 12 linked thereto are pulled with respect to the outer 13, respectively, and the plurality of brake devices to which the other end of the Bowden cable 11 is linked are simultaneously operated.

The plurality of inner wires 12 are bound together by one engaging element 26, 56 in a close arrangement state, and the brake lever bodies 3, 30
Is made compact, and the spread of the inner wire 12 is regulated by the guide by the inner guide means even if the end of the outer 13 has a spread.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 5 show a first embodiment of the present invention, wherein 1 is a handlebar of a bicycle, and a bracket 2 is fixed to the bar 1, and a brake lever main body 3 is attached to the bracket 2 on a support shaft 4.
Is mounted so as to be rotatable.

The bracket 2 is hollow, and has a support wall 5 in the upper and lower middle part of the inside. A bearing 7 is provided above the support wall 5 of the rear wall 6, and the support shaft 4 is mounted on the bearing 7 in the width direction. (In the direction perpendicular to the plane of FIG. 1). A mounting bolt 8 is inserted into the support wall 5, and the bracket 2 is fixed to the handlebar 1 by the bolt 8, a nut 9 and a tightening band 10.

The support wall 5 is formed with a fitting receiving portion 14 through which the inner wire 12 of the Bowden cable 11 is inserted and which supports the end of the outer 13 of the Bowden cable 11. The fitting receiving portion 14 has a circular guide hole 15. It comprises an elliptical outer metal support recess 16. An outer holder 17 having an oval cross section and fitted into the support recess 16 is fitted into the bracket receiver 14, and as shown in FIGS.
One inner guide hole 18 and the outer locking portion 19 are provided.

The brake lever main body 3 is formed such that its cross-sectional shape is substantially U-shaped, and a lower portion of a base portion 3A is provided inside an upper portion of the bracket 2 and is rotatably supported around the support shaft 4. I have. Then, the grip portion 3B of the lever body 3
Is formed opposite to the handlebar 1, a reinforcing wall 3C extending inward in the width direction from both sides of the lower end of the side wall is formed on the base 3A side of the grip portion 3B, and a tool insertion hole 20 is formed in the intermediate portion. Is provided. An inner receiving member 21 is provided below the base 3A of the lever body 3.

As shown in FIG. 5, the inner receiving member 21 has a columnar shape, and has a support shaft portion 22 protruding from both ends in a longitudinal direction thereof, and two inner insertion holes 23 and an inner wire 12 at a central portion of the cylindrical surface. An inner locking portion 24 is provided, and both end shaft portions 22 are provided on the base 3A of the lever body 3 so that the shaft support holes 25 are parallel to the support shaft 4.
The engagement element 26 is engaged with the inner engagement portion 24 so as to be rotatable.

A return spring 27 for returning the brake lever body 3 is formed of an elastic wire, has a coil portion 27A and spring hook portions 27B and 27C, and the coil portion 27A is near the bearing portion 7 and the bearing portion 7 and the lever. It is housed in the space with the inner surface of the main body 3, and its axis is arranged along the axial direction of the support shaft 4.
The end of one short spring hook portion 27B is inserted and locked in a locking hole 28 formed in the bearing portion 7, and the other long spring hook portion 27B is inserted.
C is in contact with the inner surface of the grip portion 3B of the brake lever body 3 via a pin 29.

The one engaging element 26 has two inner wires.
Twelve ends are fitted and fixed and tied close to each other. The proximity arrangement state of the two inner wires 12 is along the axis of the inner receiving member 21 and is substantially guided by inner guide means in front of the engaging element 26.

The inner guide means is constituted by an outer holder 17 having an inner guide hole 18, and the inner insertion hole 23 also contributes to the guide of the inner wire 12, and is provided before the engaging element 26, that is, between the engaging element 26 and the outer 13. Between them, the two inner wires 12 are guided in substantially parallel to each other while being maintained in a state of being closely attached to the engaging element 26.

According to the first embodiment, the ends of the inner wire 12 and the outer 13 of the Bowden cable 11 are compactly housed in the bracket 2, and the two inner wires 12 are bound by one engaging element 26. It can be operated simultaneously by one brake lever main body 3, and it can be made as small as one Bowden cable and of good appearance. Further, even if the arrangement of the two outer members 13 held by the outer receiving member 17 is wider than the arrangement of the inner wires, the inner wire 12 is arranged close (converged) in front of the engagement element 26, and when the engagement element 26 is pulled, A force other than the pulling direction (a perpendicular component of the pulling force) is not applied to the fixation of the inner wire 12 and the engagement element 26, and damage can be reduced.

FIGS. 6 to 8 show a second embodiment of the present invention, in which a brake lever body 30 is rotatably mounted on a bracket 31 by a support shaft 32, and the bracket 31 is mounted on a handlebar 33. I have.

The bracket 31 includes a substantially spherical handlebar grip 35 having a handlebar insertion hole 34 and an outer support 36 of the Bowden cable 11 projecting obliquely forward in the handle center direction below the grip 35. The brake lever body
The handlebar 33 is fastened to the handlebar 33 by a fastening bolt 37 provided so as not to hinder the rotation of the handle 30. The outer support portion 36 is provided horizontally with a screw tube insertion hole 38 having an axis which intersects the handlebar insertion hole center line at an acute angle when viewed from a plane, and has a nut insertion notch perpendicular to the screw tube insertion hole 38. An adjustment nut 40 is fitted in the cut 39, and a screw tube 42 having an inner guide hole 41 is screwed into the adjustment nut 40.

The outer periphery of the head 42A is tapered, and a part of the outer periphery is cut out in parallel with the screw axis over the entire length except for the head 42A, and the cross-sectional shape of the screw 42 is a cutout circle. Has become. The screw tube insertion hole 38 has a cutout circular cross section corresponding to the screw tube 42, and the screw tube 42 is slidably inserted only in the axial direction without rotating. The front end of the tube insertion hole 38 is expanded to form a fitting recess 38A into which the outer receiving cylinder 43 is fitted, and the outer receiving cylinder 4
The upper end of 3 is fitted so as to be movable in the axial direction.

In addition, on the inner periphery of the outer receiving cylinder 43, a female screw portion 43A is provided at an upper end portion.
Is provided, and a fitting recess 43B for fitting the outer receiving metal 44 is provided at a lower end thereof, and is screwed to the lower end of the screw tube 42.

Therefore, the screw 42 moves in the axial direction by the rotation of the adjusting nut 40, and the outer receiving cylinder 43 also moves by the same amount as the screw 42 at the same time, so that the adjusting nut 40, the screw 42 and the outer receiving Outer tension adjusting means for adjusting slack of the outer 13 by adjusting the distance between the outer receiver 44 and an inner receiver 54 described later by the cylinder 43 and the like.

The outer receiver 44 has a stepped cylindrical shape and has two through holes 45.
Are provided in the axial direction, and the entrance of each through hole 45 on the large diameter side is expanded to form an outer locking portion 46.
44A is provided with an interrupt groove 47 so as to communicate both through holes 45,
The small diameter side 44A is fitted and locked in the fitting recess 43B of the outer receiving cylinder 43 (see FIG. 8). The end of the outer 13 of the Bowden cable 11 is fitted and locked in the outer locking portion 46 of the outer receiver 44.

The brake lever body 30 has a mounting portion 48 on the bracket 31 which is formed in a substantially L-shape as viewed from the rear surface at the tip portion, and has a surface parallel to the lower surface of the grip portion 49 of the lever body 30; A vertical shaft hole 50 is provided, and the support shaft 32 is loosely fitted in the shaft hole 50 via a coil-shaped return spring 51. The support shaft 32 is non-rotatably screwed to the bracket 31 so that the brake lever main body 30 is rotatable and the gripping portion 49 of the brake lever main body 30 is released, whereby the support shaft 32 is fixed by the return spring 51. It is to be returned to the position.

The L-shaped corner of the brake lever body 30 is an inner support 52, which is orthogonal to the shaft hole 50 and
An inner wire adjusting screw insertion hole 53 having a cut-out circular cross section is provided in a penetrating manner in parallel with the front half of the inner wire, and a cylindrical inner wire adjusting screw (inner receiving metal) 54 is inserted therethrough. In addition,
At the tip end of the screw insertion hole 53, a tapered surface 53A that expands outward is formed, and the outer peripheral tapered surface of the head 42A of the screw tube 42 is suitably brought into contact. When the adjusting nut 40 is rotated, the threaded tube 42 moves back and forth to adjust the distance between the outer support portion 36 of the bracket 31 and the brake lever body 30, that is, the opening width of the brake lever body 30.

The inner wire adjusting screw 54 has a cutout circular cross section in which a part of the outer peripheral surface is cut in parallel with the axis to form a flat portion 54A, and when inserted into the screw insertion hole 53 of the lever body 30, the inner screw adjusting screw 54 54 moves only in the axial direction without rotating. The inner wire adjusting screw 54 is projected to the grip portion 49 side of the brake lever main body 30 to screw the inner wire adjusting nut 55, and the engaging element 56 of the two inner wires 12 inserted thereinto is connected to the adjusting nut 55.
And is locked by contacting the inner locking portion 54B at the end of the adjusting screw 54. Therefore, by rotating the inner wire adjusting nut 55, the adjusting screw 54 moves back and forth, the length of the inner wire is adjusted optimally, and the slack can be removed to provide tension.

The inner wire adjusting screw 54 is attached to the inner supporting portion 52 via an adjusting nut 55, and forms an inner receiving member for substantially engaging the engaging element 56. Guides the inner wire 12.

The screw tube 42 having the inner guide hole 41 serves as inner guide means for guiding the close arrangement of the plurality of bound inner wires 12, and the inner insertion hole 70 of the inner wire adjusting screw 54 also contributes to the guide of the inner wire 12. ing.

The present invention is not limited to the above embodiments,
For example, the Bowden cable 11 can be three or more.

(Effects of the Invention) According to the present invention described in detail above, the ends of the plurality of inner wires 12 inserted into the bracket 2 are close to the single engagement elements 26, 56 inside the brake lever bodies 3, 30. Since they are fixed in the arrangement state, the engaging members 26 and 56 and the inner receiving members 21 and 54 can be formed small and light, and can be compactly housed in the brake lever main bodies 3 and 30. Since inner guide means is provided between 46 and the inner locking portions 24 and 54B, the inner guide means is provided to guide all the inner wires 12 in substantially the same state as the close arrangement of the inner wires 12 fixed to the engagement elements 26 and 56. Outer locking parts 19, 46
And a plurality of inner wires 1 between the inner locking portions 24 and 54B.
2 can be maintained close to each other, and the inner wire 12 is restricted from spreading, so that no force other than the pulling direction is applied and the inner wire 12 can be pulled smoothly, and furthermore, the engagement members 26, 56 and the inner receiving members 21, 54 Small and multiple inner wires 12
Are arranged close to each other,
The brackets 2 and 31 and the brake lever bodies 3 and 30, which compactly house all the inner wires 12, the engagement elements 26 and 56, and the inner receiving members 21 and 54 from the end of 13, can be formed in a compact size, and all the inner wires 12 are substantially equivalent. While being pulled by the pulling force, the inner wire 12 can be prevented from being cut and the inner wire 12 and the engaging elements 26 and 56 can be fixed and damaged, and at the same time, the inner wire 12 can be prevented from coming into contact with clothes or being exposed to rainwater. .

Also, since the bracket 31 is provided with an outer tension adjusting means for adjusting the distance between the outer holder 44 and the inner holder 54 to remove the slack of the outer 13, a plurality of Bowden cables 11 can be connected. Even with one operation using the brake lever main body 30, the slack of the plurality of outer 13 can be removed at the same time.

[Brief description of the drawings]

1 to 5 show a first embodiment of the present invention, wherein FIG. 1 is a central sectional view, FIG. 2 is a perspective view, FIG. 3 is an exploded perspective view, and FIG. FIG. 5 is an exploded perspective view of the inner receiving member and the engaging element, FIGS. 6 to 8 show a second embodiment of the present invention, FIG. FIG. 8 is an exploded perspective view, FIG. 8 is a rear perspective view of the outer receptacle, and FIG.
The figure is a schematic illustration of a tandem bicycle. 1, 33 ... handlebar, 2, 31 ... bracket, 3, 30 ...
Brake lever body, 11 ... Bowden cable, 12 ... inner wire, 13 ... outer, 14 ... metal fitting receiving part, 17, 44 ... outer fitting, 18, 41 ... inner guide hole, 19, 46 ... outer locking part, 21 ... Inner holder, 23, 70… Inner insertion hole, 26, 56…
Engagement element, 36: outer support part, 54: adjustment screw (inner receiving metal).

Claims (2)

(57) [Scope of request for utility model registration] A brake lever body (3) is rotatably mounted on a bracket (2) mounted on a handlebar (1) via a support shaft (4), and a plurality of Bowden cables (11) are provided. A plurality of Bowden cables (17) provided with one outer receptacle (17) in which an outer locking portion (19) supporting the end of the outer (13) is provided in parallel with the bracket (2). The ends of the inner wires (12) of 11) are fixed to one engaging element (26) in a state of being arranged close to each other, and the engaging element (26) is attached to the brake lever body (3) at a position away from the support shaft (4). ) And inner insertion hole (23) through which multiple inner wires (12) are inserted
Is provided, and all the inner wires (12) are fixed to the engaging element (26) between the outer locking portion (19) and the inner locking portion (24). Brake lever device provided with inner guide means for guiding insertion in substantially the same state as the close arrangement state of the brake lever. 2. A brake lever body (30) is rotatably mounted on a bracket (31) mounted on a handlebar (33) via a support shaft (32), and a plurality of Bowden cables (11) are provided. A plurality of Bowden cables (44) which are provided with one outer catch (44) in which an outer locking portion (46) for supporting the end of the outer (13) is provided in parallel and which is inserted into the bracket (31). The ends of the inner wire (12) of 11) are fixed to one engaging element (56) in a state of being close to each other, and the engaging element (56) is attached to the brake lever body (30) at a position away from the support shaft (32). ) Is provided with one inner holder (54) in which an inner engaging portion (54B) for supporting the inner wire and an inner insertion hole (70) for inserting the inner wire (12) are formed, and the outer holder is provided on the bracket (31). Adjust the distance between (44) and the inner receiving money (54) to loosen the outer (13). An outer tension adjusting means to be removed is provided, and between the outer locking portion (46) and the inner locking portion (54B), all the inner wires (12) are fixed to the engagement element (56) in substantially the same state as the close arrangement. A brake lever device provided with inner guide means for guiding insertion in a state.