JP3279203B2 - Bicycle brake lever and bar end - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake lever which can be mounted on a bicycle handlebar, a brake lever for operating a brake device, and a bar end which can be mounted on both ends of the handlebar.

[0002]

2. Description of the Related Art Mountain bikes are often provided with a substantially straight handlebar extending left and right. A grip is put on both ends of the handlebar, and a brake lever and a shift lever are provided inside the grip. The brake lever includes a bracket having a swing shaft and mounted inside the grip of the handlebar, and a lever member swingably supported by the bracket.
The lever member extends right and left along the handlebar so as to increase the interval between the distal ends. In a mountain bike equipped with such a brake lever, particularly in a mountain bike used in a cross-country race, a bar end is provided integrally with or separately from the handle bar to obtain a plurality of handle positions at both ends of the handle bar. Often provided.

[0003] The bar end is a rod-shaped member that is attached to the handlebar so as to be slightly upward in the front so as to cross the handlebar. Such bar ends are often used to change the steering wheel position, for example, when climbing uphill or running on level ground. However, when such a bar end is used, the hand is separated from the brake lever and the shift lever. Therefore, each time braking is performed, the hand must be returned to the grips at both ends of the handlebar, and it is difficult to quickly apply the braking while holding the bar end.

[0004] An extension lever is known which can be mounted in parallel with a bar end at the end of a lever member of a brake lever in order to perform a braking operation in two positions (US Patent No. 5,299,466). ). The extension lever includes a lever member and a mounting member. The lever member has an operation unit having a shape that can be gripped by a finger.
The mounting member is a member for mounting the lever member at the tip of the brake lever in parallel with the bar end. By providing such an extension lever on the brake lever, a braking operation can be performed even when the bar end is held.

[0005]

The operating part which can secure a desired braking force with a predetermined lever stroke using a brake lever is usually designed to be one inch (25.4 mm) inside from the tip of the brake lever. Have been. When the brake lever is gripped at this operation portion, a desired braking force is obtained at a predetermined lever stroke. However, when the brake lever is operated away from this position, even if the brake lever is operated for a predetermined lever stroke, the stroke of the brake cable is insufficient and the desired braking force is obtained. It is difficult to obtain braking force.

[0006] In the conventional structure in which an extension lever is provided along the bar end at the tip of the brake lever, the extension lever has a larger lever stroke than the brake lever.
For this reason, even if braking is performed by the extension lever on the bar end side, it is difficult to obtain a desired braking force with the same lever stroke. Moreover, since the bar end extends in the direction crossing the handlebar, when the extension lever arranged along the bar end is grasped, the brake lever along the handlebar is twisted and the force escapes, and from this point It is difficult to obtain a desired braking force.

On the other hand, in the case of a drop type handlebar,
A brake lever having an auxiliary lever as disclosed in Japanese Utility Model Laid-Open Publication No. 52-21665 has been proposed. The brake lever includes a bracket attached to a base end of an arc portion at both ends of the handlebar, a main lever member swingably mounted on a swing shaft in the bracket and extending along the arc portion, and a main lever member. And an auxiliary lever member that is interlockable with and extends along a straight portion of the handlebar. The main lever member extends in the bracket in a direction orthogonal to the swing axis and extends along an arc portion of the handlebar. By providing such an auxiliary lever member, the braking operation can be performed while holding the straight portion.

However, it is difficult to attach the above-described brake lever to the bar end because the structure and the disposing direction are different between the drop type handle bar and the handle bar having the mountain bike bar end mounted thereon. . SUMMARY OF THE INVENTION It is an object of the present invention to enable a brake operation at two positions, a bar end and a handlebar, and to obtain a strong braking force.

[0009]

The bicycle brake lever according to the first aspect of the present invention is provided at the both ends of the bicycle handlebar integrally with or separately from the handlebar, and is attached to the tip of a bar end extending in a direction crossing the handlebar. Is possible,
A lever for operating a brake device, comprising a bracket and a lever member. The bracket has a pivot axis and is mounted on the tip of the bar end. Lever member includes a first operation portion which is arranged along the bar end is set
And a first lever disposed at one axial end of the swing shaft.
Part and a second operation part arranged in a direction intersecting with the first operation part are provided.
A second lever portion disposed on the other end side in the axial direction, and is swingably mounted on the bracket via a swing shaft.

In this brake lever, when the first operation section is arranged along the bar end, the second operation section arranged in a direction intersecting with the first operation section is arranged along the handlebar. Therefore, the braking operation can be performed in a state where one of the two operation units is gripping the handlebar or the bar end, that is, in the two handle positions. In addition, since the two operating units are provided on the lever member mounted on the bracket mounted on the distal end of the bar end, the lever strokes of the two operating units are substantially the same. Therefore, the difference in the braking force between the two operation units is reduced, and a strong braking force can be obtained with the two operation units.
Also, since an operation unit is provided for each lever unit, the operation unit
The rigidity of the lever member is increased. In addition, two operations
The first lever portion and the second lever portion provided with the working portion swing.
The first operating unit is disposed at one end and the other end of the driving shaft, and
Because it is located along the bar end, the bracket
1 It will be located inside the bar end from the operation unit.
You. Therefore, the bracket is not in the way,
Hand, it is possible to secure a sufficient grip length
it can. Also, the bracket is located inside the bar end
So that the bracket protects the bar end even if it falls.
It is hard to be damaged.

A bicycle brake lever according to a second aspect of the present invention
In the lever according to the invention 1, the first operating unit is arranged on one side in the longitudinal direction relative to the mounting portion to the bar ends of the bracket, the second operation unit, to the mounting portion of the bar end of the bracket It is arranged on the same side as the first operation unit. In this case, since the two operation units are arranged on the same side in the front-rear direction with respect to the mounting unit to the bar end,
This makes it easier to align the two operation units along the bar end and the handlebar.

A bicycle brake lever according to a third aspect of the present invention
In the lever according to the first or second aspect , the second operation unit includes:
Approximately in the longitudinal direction of the first operation part with respect to the center of oscillation of the pivot
It is arranged at an interval of 0 to 60 degrees from the part . In this case, even if the mounting angle of the bar end around the axis of the handlebar is changed, the two operation units are easily arranged on the same side.

A bicycle brake lever according to a fourth aspect of the present invention
The lever according to any one of inventions 1 to 3 , wherein
The operation unit is arranged to extend in a direction intersecting the swing axis, and the second operation unit extends in a direction along the swing axis. In this case, if the swing axis is arranged in a direction intersecting the bar end, the first operation unit is arranged along the bar end, and the second operation unit is arranged along the handlebar.

A bicycle brake lever according to a fifth aspect of the present invention
In the lever according to any one of the inventions 1 to 4 , the bracket is attachable to at least one of the bar ends, is biased inside the bar end in the attached state, and the first operation portion is disposed along the bar end. The second operation unit is arranged along the handlebar. A bicycle bar end according to a sixth aspect of the present invention is a bar end that can be detachably attached to both ends of a bicycle handlebar, and an end body whose base end is detachably attachable to an end of the handlebar; Attached to the tip , the swing axis is at the end
The brake lever according to any one of claims 1 to 5 , which is arranged in a direction crossing the main body . In this case, the braking operation can be reliably performed while holding the bar end. Also, the swing shaft is arranged in the direction crossing the end body.
The first operating part is located along the bar end.
The second operation unit is arranged along the handlebar. This
Therefore, the braking operation is ensured with two handle positions
I can do it.

A bicycle bar end according to a seventh aspect of the present invention is a bicycle bar end.
6. The bar end according to 6 , further including a speed change operation unit mounted on the end body for speed change operation. In this case, the gearshift operation can be performed in addition to the braking operation while holding the bar end. The bicycle bar end according to an eighth aspect of the present invention is the bar end according to the seventh aspect , wherein the handlebar is provided with a main speed change operation portion, and the speed change operation portion includes:
The main shift operation section is operated by being connected to the main shift operation section.
In this case, the gear change operation can be performed at the two handle positions of the handlebar and the bar end.

A bicycle bar end according to a ninth aspect of the present invention is a bicycle bar end.
8. In the bar end according to 8 , the main shift operation section and the shift operation section have a pair of swinging shift levers for upshift and downshift, respectively, and each of the main shift operation section and the shift operation section has a shift. The levers are connected to each other by a speed change cable and interlock. In this case, the upshift shift lever and the downshift shift lever of the main shift operation unit and the shift operation unit are interlocked, so that one shift operation is performed by a shift operation at one of the two handle positions. Can be made.

The bicycle bar end according to the invention 10, in the bar end according to the invention 9, a pair of shift lever
Is the axis of rotation of the end body in the direction in which the end body extends.
Mounted on the end body and fixed inside the end body.
They are arranged at angular intervals.

[0018]

1, a bar end 10 according to an embodiment of the present invention is mounted on both ends of a handlebar 11 so as to face diagonally upward and forward. The handlebar 11 is fixed to the upper end of a suspension fork 14 swingably mounted on the head portion 13 of the frame body 12 so as to sandwich the head portion 13. On a pedestal 15 of the suspension fork 14, a cantilever brake (commonly called a V brake) 16 of a horizontal pull type is mounted.

The handlebar 11 is made of a substantially straight pipe material, and a main speed change operation portion 20 for rear and front derailleurs and a grip 21 are mounted side by side on both ends. As shown in FIG.
Shift lever 22a for upshift, shift lever 22b for downshift, and shift levers 22a, 22b
And a shift mechanism 23 for moving an inner cable (not shown) for shifting one step at a time. FIG. 2
Shows a main derailleur main shift operation section 20. The shift lever 22a is connected to a ratchet mechanism (not shown) of the shift mechanism 23, and rotates the ratchet mechanism in a cable winding direction (upward shifting direction). The shift lever 22b is connected to a ratchet releasing mechanism of the shift mechanism 23, and rotates the ratchet mechanism in a cable feeding direction.

The bar ends 10 are mounted on both outer sides of the grip 21 of the handle bar 11. Bar end 10
Includes an end body 25, a brake lever 26 attached to the end body 25, and a sub-shift operation unit 27 attached to a distal end surface of the end body 25. End body 25
Has a mounting portion 25a (FIG. 4) secured to the handlebar 11 with bolts at the base end. The end body 25 is attached to the handlebar 1 from the mounting portion 25a in the mounted state.
1 is a member that extends in a direction orthogonal to 1 and has a shape in which an intermediate portion is curved toward the center of the handlebar 11. Brake lever 2
As shown in FIGS. 2 to 4, a bracket 30 integrally attached to the end of the end body 25 and a bracket 3
And a lever member 31 swingably mounted on the lever.

The bracket 30 is formed integrally with the front end of the end body 25 so as to be deflected inward and is integrated with the bar end 1.
Reference numeral 0 denotes a member that extends downward in a mounted state. As shown in FIGS. 3 and 4, an outer receptacle 34 for locking the outer casing 40 of the brake cable is screwed to the distal end of the bracket 30. The stroke of the inner cable 41 connected to the brake 16 can be adjusted by adjusting the screwing amount of the outer receiver 34, for example. A lever shaft 32 disposed substantially along the handlebar 11 is rotatably mounted at an intermediate portion of the bracket 30. The lever member 31 swings around the lever shaft 32. A return spring 33 composed of a torsion coil spring that biases the lever member 31 in the opening direction is disposed on the outer peripheral side of the lever shaft 32.

The lever member 31 includes a first lever 35 extending outside the lever shaft 32 and a second lever 36 extending inside.
And The first lever 35 has a first operation part 37 arranged along the end main body 25 of the bar end 10, and the second lever 36 has a second operation part 38 arranged in a direction crossing the first operation part. have. First lever 35
Extends downward from the portion attached to the lever shaft 32 at right angles to the lever shaft 32, and is bent outward by approximately 90 degrees along the axial direction of the lever shaft 32. It is bent along the end body 25. The tip portion along the end main body 25 is a first operation unit 37. The second lever 36 is connected to the first lever 35
The lever swings integrally with the lever shaft 32, and extends downward at a right angle to the lever shaft 32 together with the first lever 35 from a portion attached to the lever shaft 32, and is bent in a direction approaching the rear handlebar 11. The tip is bent so as to extend along the lower front of the handlebar 11. This handlebar 1
The tip portion along 1 is a second operation section 38.

The first operation section 37 is disposed rearward of the mounting section of the bracket 30 to the end body 25, and the second operation section 38 is disposed on the same side as the first operation section 37. As shown in FIG. 3, a straight line P connecting a point A 25.4 mm inward from the tip of the first operation unit 37 and the center of the lever shaft 32, a center of the second operation unit 38 and a center of the lever shaft 32. Is preferably between 0 ° and 0 °.
60 °, more preferably in the range of 5 ° to 30 °. 2
When the angle θ formed by the two straight lines P and Q is in such a range, even if the mounting angle of the bar end 10 slightly changes, the two operation units 37 and 38 are arranged on the same side, and the end body 2
5 and the handlebar 11. Second
The bent portion of the lever 36 has an inner cable 4
A tie receiver 43 for detachably locking a tyco 42 fixed to the end of the diaper 1 is swingably mounted.

The sub-shift operation section 27 is provided with a shift lever 45 for up-shift, which is swingably mounted on the end of the end body 25.
a and a shift lever 45b for downshifting.
These shift levers 45a and 45b are connected to the end body 25.
Are arranged at intervals of, for example, about 60 °. As shown in FIG. 2, the upshift shift lever 45a is connected to the shift lever 22a via a shift cable 46a composed of an inner cable and an outer casing, and the downshift shift lever 45b is connected to the shift lever 2a.
2b is connected via a speed change cable 46b.

When the bar end 10 constructed as described above is mounted on both ends of the handlebar 11, the handlebar 11
When traveling while holding the grip 21 of the second operation unit 3
8, the braking operation can be performed, and
Can perform a gear shift operation. In addition, when traveling while gripping the end main body 25 of the bar end 10 on a slope or the like, a braking operation can be performed by the first operation unit 37 and a shift operation can be performed by the sub-transmission operation unit 27. When the braking operation is performed by the first operation section 37, the first lever 35 swings toward the end main body 25 side. As a result, the second lever 36 also swings, the inner cable 41 is pulled, and the brake shoe comes into contact with the wheel to apply braking. Further, when the upshift lever 22a of the main speed change operation unit 20 is operated with the thumb, the rear derailleur moves in the upward direction, and the speed increasing gear ratio decreases. Conversely, when the shift lever 22b is operated with the index finger, the rear derailleur moves in the downward direction, and the speed increasing gear ratio increases.

When a braking operation is performed by the second operation section 38, the second lever 36 swings. As a result, the inner cable 41 is pulled, and the brake shoe comes into contact with the wheel to apply braking. At this time, the first lever 35 also swings,
The swing does not have any other adverse effect. When the upshift lever 45a of the sub-shift operation section 27 is operated with a thumb, the inner cable of the shift cable 46a moves to swing the shift lever 22a of the main shift operation section 20, and the rear derailleur moves in the up direction. As a result, the gear ratio decreases. Conversely, when the downshift lever 45b is operated with the thumb, the inner cable of the shift cable 46a moves to swing the shift lever 22b of the main shift operation section 20, the rear derailleur moves in the down direction, and the speed increasing gear ratio Becomes larger.

Since the first operating portion 37 and the second operating portion 38 are provided on the lever member 31 mounted on the bracket 30 at the tip of the bar end 10, the lever strokes are substantially the same. . Therefore, a difference in braking force between the two operation units 37 and 38 is reduced, and a strong braking force can be obtained with the two operation units 37 and 38.

The two operating portions 37 and 38 are arranged at one end (outside) and the other end (inside) of the lever shaft 32, and the first operating portion 37 is arranged along the bar end 10. Therefore, the bracket 30 is arranged on the inner side of the bar end 10 than the first operation unit 37. For this reason, the bracket 30 does not interfere and the short bar end 1
Even if it is 0, the length of the grip portion can be sufficiently ensured. Further, since the bracket 30 is disposed inside the bar end 10, the bracket 30 is protected by the bar end 10 even when it falls down, and is hardly damaged.

Since the first lever 35 and the second lever 36 are provided with the operating portions 37 and 38 respectively, the rigidity of the lever member 31 is increased. Further, since the bar end 10 is provided with the sub-shift operation unit 27 in addition to the brake lever 26, the braking operation and the gear shifting operation can be performed with the bar end 10 held.

[0030] In the Other Embodiments The embodiment has formed integrally with the bracket 30 to the end body 25, as shown in FIG. 5, the bracket 30
a may be provided with a mounting band 47, and the brake lever 26 may be detachably mounted on the end body 25b.
In this case, the brake lever 26 can be freely attached to the commercially available bar end 10a. In this embodiment,
The sub-shift operation section 27 can be detachably attached to the bar end 10a.

[0031]

According to the present invention, when the first operation unit is arranged along the bar end, the second operation unit arranged in a direction intersecting with the first operation unit is arranged along the handlebar. Therefore, the braking operation can be performed in a state where one of the two operation units is gripping the handlebar or the bar end, that is, in the two handle positions. In addition, since the two operation units are provided on the lever member mounted on the bracket mounted on the distal end of the bar end, the lever strokes of the two operation units are almost the same. Therefore, the difference in the braking force between the two operation units is reduced, and a strong braking force can be obtained with the two operation units.

[Brief description of the drawings]

FIG. 1 is a front perspective view of a mountain bike employing one embodiment of the present invention.

FIG. 2 is a perspective view of the bar end.

FIG. 3 is a side sectional view of a bar end.

FIG. 4 is a bottom sectional view of a bar end.

FIG. 5 is a diagram corresponding to FIG. 3 of another embodiment.

[Explanation of symbols]

 10, 10a Bar end 11 Handlebar 20 Main transmission operation part 22a, 22b Shift lever 25, 25b End body 26 Brake lever 27 Sub transmission operation part 30, 30a Bracket 31, 31a Lever member 32 Lever shaft 35 First lever 35a First lever Part 36 Second lever 36a Second lever part 45a, 45b Transmission lever 46a, 46b Transmission cable

Continuation of the front page (56) References JP-A-47-17139 (JP, A) JP-A-8-239075 (JP, A) Full-open sho 56-129388 (JP, U) Real-open sho 63-13398 (JP , U) Japanese Utility Model Showa 55-153293 (JP, U) Japanese Utility Model Showa 56-149391 (JP, U) Japanese Utility Model Showa 58-179291 (JP, U) Japanese Utility Model Showa 42-6015 (JP, Y1) 64-500026 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B62L 3/02

Claims (10)

(57) [Claims] 1. A brake for operating a brake device, provided at both ends of a handlebar for a bicycle, integrally or separately from the handlebar, and attachable to a tip end of a bar end extending in a direction intersecting with the handlebar. A lever having a swing shaft, a bracket attached to a tip end of the bar end, and a first operation unit arranged along the bar end .
A first lever disposed at one axial end of the swing shaft
Part and a second part arranged in a direction intersecting the first operation part.
An operation unit is provided so as to interlock with the first lever unit.
A second lever portion disposed at the other axial end of the swing shaft, and a lever member swingably mounted on the bracket via the swing shaft, a bicycle brake comprising: lever. 2. The mounting device according to claim 1, wherein the first operating portion is disposed on one side in a front-rear direction with respect to a mounting portion of the bracket to the bar end, and the second operating portion is a mounting portion of the bracket to the handlebar. The bicycle brake lever according to claim 1 , wherein the brake lever is disposed on the same side as the first operation unit with respect to the first operation unit. 3. The second operating portion is disposed at a substantially middle portion in a longitudinal direction of the first operating portion with respect to a swing center of the swing shaft at 0 to 6 degrees.
The bicycle brake lever according to claim 1 or 2 , which is disposed at an interval of 0 degrees. 4. The apparatus according to claim 1, wherein the first operating section is arranged to extend in a direction intersecting the swing axis, and the second operating section extends in a direction along the swing axis. 3. The brake lever for a bicycle according to any one of 3 . 5. The bracket is attachable to at least one of the bar ends, is biased inside the bar end in a mounted state, and the second operation portion is disposed along the handlebar. Claims 1 to 4
A brake lever for a bicycle according to any one of the above. 6. A bar end detachably attachable to both ends of a handlebar for a bicycle, an end body having a base end detachably attachable to an end of the handlebar, and the end. Attached to the tip of the body, the swing shaft is
Claim 1 which is disposed in a direction intersecting with the end body 5
A bar end for a bicycle, comprising: the brake lever according to any one of the above; 7. The bar end for a bicycle according to claim 6 , further comprising a shift operation section mounted on the end body for a shift operation. 8. which primarily gearshift operating part is mounted on the handlebar, the speed-change operating unit is coupled to operate said main shift operating unit to the main speed change operation unit, according to claim 7 Bicycle bar end. 9. The main shift operation section and the shift operation section each have a pair of swinging shift levers for upshift and downshift, and each of the main shift operation section and the shift operation section has a shift gear. The lever is connected by a speed change cable,
The bicycle bar end according to claim 8 . 10. The pair of shift levers are provided with the end book.
Swings around the axis in the direction in which the end body extends at the tip of the body
Freely mounted and at a predetermined angle inside the end body
Bicycle bars as set forth in Uku, spaced apart
End.