JPH08239075A - Aerobrake of bicycle for competition - Google Patents

Abstract

PURPOSE: To enable braking in aeroposition without adding the brake device of a bicycle for competition. CONSTITUTION: A brake cable 24 connected to a brake device is tied to a brake lever mounted on a handle after being passed through an aerobar 15 for a detour. For the brake cable 24 arranged at the aerobar 15, its one part is fixed at two points with cable fixers 31 and 32, and the wire 24a within the brake cable 24 is exposed between these two points. If the tensed wire 24a is pushed to the side of the aerobar 15, the wire 24a is stretched, and a brake device works. Accordingly, braking becomes possible without a rider collapsing the aeroposition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a competition bicycle, and more particularly to an aero brake for a competition bicycle provided with an aero bar.

[0002]

2. Description of the Related Art Generally, a racing bicycle used for road racing is provided with a drop handle so that a rider can run in a forward leaning posture. In recent years, in triathlons and duathlons,
Competition bicycles with an aero bar protruding from the front of the drop handle are becoming known.

The rider places both elbows on the base end of the aero bar and takes a so-called aero position (DH position) in which the front end of the aero bar is held by both hands, thereby reducing the front projected area and reducing the air resistance. We are trying to reduce.

[0004]

In a competition bicycle having an aero bar projecting, the brake lever is attached to the drop handle, so the aero position must be destroyed during braking, and braking is not possible in an emergency. There are times when I cannot make it in time, and there are many accidents of braking mistakes.

Although it is conceivable to provide a brake device that can be operated by an aerobar separately from the brake device that is operated by the drop handle, providing two systems of brake devices complicates the structure and increases the cost. It becomes heavy, which is extremely disadvantageous in playing the game.

Therefore, there is a technical problem to be solved in order to enable braking in an aero position without adding a braking device for a competition bicycle. The present invention solves this problem. The purpose is to resolve.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been proposed in order to achieve the above-mentioned object, and in a competition bicycle in which an aero bar is projected in front of a handlebar on which a brake lever is mounted, a brake is provided. A race in which the brake cable connected to the device is diverted to the aerobar, and then connected to the brake lever of the steering wheel to fix the two points of the brake cable to the aerobar, and the wire inside the brake cable is exposed between these two points. In the aerobrake of the bicycle and the bicycle for competition in which the aerobar is projected in front of the handle with the brake lever attached, the brake cable connected to the brake device is inserted into the inside of the aerobar to bypass the handlebar. It is attached to the brake lever of and the two points of the brake cable are fixed inside the aero bar. At the same time, the wire inside the brake cable is exposed between these two points, and an opening hole is opened in the aerobar at a substantially intermediate position between these two points so that the opening can be rotated in the radial direction of the aerobar. An aerobrake for a competition bicycle in which a lever is pivotally mounted, the tip of the lever is locked to the wire of the brake cable, and the other end of the lever is projected to the outside of the aerobar, and a handle equipped with a brake lever. In a competition bicycle with an aero bar projecting in front of, the brake cable connected to the brake device is inserted into the aero bar to bypass it, and then connected to the brake lever of the steering wheel, and the position near the grip of the aero bar. Bend the brake cable with, and fix the two points of the straight line on both sides of the brake cable inside the grip. , The wire inside the brake cable is exposed between these two points, the exposed wire is wound around a pulley, and an opening hole is opened in the grip near the pulley, and the opening is provided in the axial direction of the grip. Of a competition bicycle in which a rotatable lever is pivotally mounted, the tip of the lever is locked to a pulley arm projecting on the folded portion side of the brake cable, and the other end of the lever is projected to the outside of the grip. It provides aero brakes.

[0008]

According to the present invention, the brake cable connected to the brake device is circumvented to the aerobar and then connected to the brake lever of the steering wheel.

According to the first aspect of the present invention, two points of the brake cable are fixed to the aerobar, and the wire inside the brake cable is exposed between these two points. When the tensioned wire is pressed, the wire is pulled by this pressing and the brake device operates. Therefore, the rider can brake in the aero position.

According to a second aspect of the present invention, two points of the brake cable are fixed inside the aero bar, and an opening is opened at a substantially intermediate position between these two points to pivotally attach the lever. When the rider presses the other end of the lever, the lever rotates in the radial direction of the aerobar, the wire locked at the tip of the lever is pulled, and the brake device operates. Even in such a case, the rider can brake in the aero position.

According to the third aspect of the invention, the brake cable is folded back inside the grip of the aero bar to fix the two points, and the wire exposed at the folded back portion is wound around the pulley. When the rider presses the other end of the lever, the lever rotates in the axial direction of the grip, and the pulley arm locked at the tip of the lever pulls the wire to operate the brake device. Even in such a case, the rider can brake in the aero position.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIG. FIG. 1 shows a competition bicycle 11 used in a triathlon, in which a drop handle 12 is provided with left and right brake levers 13 and 14. An aero bar 15 is fixed to the center of the left and right sides of the drop handle 12 so as to project forward. Elbow rests 16 and 17 are provided at the base end of the aero bar 15, and grips 18 and 19 are provided at the tip of the aero bar 15. To provide.

Here, the front fork 20 is provided with a front wheel braking device 21, and the rear fork 22 is provided with a rear wheel braking device 23. The brake cable 24 connected to the brake device 21 for the front wheel is inserted into the aerobar 15 to bypass it, and then is connected to one brake lever 13 of the drop handle 12. Further, the brake cable 25 connected to the brake device 23 for the rear wheel is also inserted into the inside of the aerobar 15 so as to be bypassed, and then connected to the other brake lever 14 of the drop handle 12. Therefore, when the rider operates the brake levers 13 and 14 attached to the drop handle 12, the wires in the brake cables 24 and 25 are pulled, and the brake devices 21 and 23 operate in the same manner as the conventional type.

When running a bicycle race, the aero bar 1
Often, the rider's elbows are placed on the elbow rests 16 and 17 of 5, and the left and right grips 18 and 19 are held by both hands to take an aero position (DH position). An aero brake 26 is provided at the tip of the aero bar 15. By operating the aero brake 26, the rider can brake in the aero position, as will be described later.

2 to 4 show an example of the aero brake 26. As shown in FIG. 2, holes 27, 28 and 29, 30 are opened on the rear side of the aerobar 15 as seen from the rider. As described above, the brake cables 24 and 25 are inserted into the aerobar 15 and bypassed. One brake cable 24 is once projected from the hole 27 to the outside of the aerobar 15, and is inserted again into the inside of the aerobar 15 from the hole 28. The other brake cable 25 is also once projected from the hole 29 to the outside of the aerobar 15. Hole 30
To the inside of the aerobar 15 again.

Cable fixtures 31 and 32 are fixed near the holes 27 and 28 to fix two points of the brake cable 24, and the coating between the cable fixtures 31 and 32 is removed to remove the internal wire 24a. To expose. Further, cable fixing tools 33, 34 are fixed near the holes 29, 30 to fix two points of the brake cable 25, and the coating between the cable fixing tools 33, 34 is removed to remove the internal wire 25a. To expose. Brake device 21,2
The wires 24a and 25a of the brake cables 24 and 25 are always in a tensioned state by a spring (not shown) provided on the third side.

When the rider who is about to take the aero position grips the grips 18 and 19 of the aero bar 15, as shown in FIG. 3, the left and right index fingers and the middle finger are provided between the cable fixing members 31 and 32 and 33 and 34. Put your finger so that is positioned. Then, when the exposed wires 24a and 25a are pressed toward the grips 18 and 19 by both the index finger and the middle finger or one of the fingers while traveling in the aero position, as shown in FIG. The wires 24a and 25a are bent and pulled, and the braking device 2
1, 23 are activated. Therefore, the rider can perform the braking operation in the same posture without breaking the aero position.

FIGS. 5 and 6 show another embodiment of the aero brake 26. One brake cable 24 is fixed at two points inside the aerobar 15 by cable fixing members 35 and 36. , 36 is removed to expose the inner wire 24a. Also, the other brake cable 25 is fixed at two points inside the aerobar 15 with cable fixing members 37 and 38, and the coating between the cable fixing members 37 and 38 is removed to expose the wire 25a inside.

Then, opening holes 39 and 40 are opened between the cable fixing members 35 and 36 and 37 and 38, respectively.
Pins 41 and 42 are provided in the opening holes 39 and 40, and levers 43 and 44 are pivotally attached. Both levers 43 and 4
4 is installed symmetrically with respect to the aerobar 15,
The grips 18 and 19 are rotatable in the radial direction. The tips 43a and 44a of the respective levers are locked to the wires 24a and 25a of the brake cable, and the other ends 43b and 44b of the respective levers are projected to the outside of the aerobar 15.

FIG. 6A shows the other lever 44, in which the brake cable 25 is fixed to the inside of the aerobar 15, and the tip 44 of the lever 44 is attached to the exposed wire 25a.
a is locked. Then, when the rider's finger pushes the other end 44b of the lever 44 toward the inside of the grip 19 (the direction of the arrow in the figure) while traveling in the aero position,
The lever 44 rotates about the pin 42 in the clockwise direction in the figure. Then, as shown in FIG. 6B, the tip end 44a of the lever 44 moves toward the outside of the grip 19 inside the aerobar 15, the wire 25a is pulled, and the brake device 23 operates. Similarly, with respect to the one lever 43, the brake device 21 is operated by pressing the other end 43b of the lever 43. Therefore, the rider can brake without losing the aero position.

The shape of the lever for pressing the wires 24a, 25a of the brake cables 24, 25 should not be limited to the above-mentioned embodiment, but other configurations may be used. For example, as shown in FIG. 7A, a new grip 45 is loosely fitted to the aerobar 15, and the other end 44 b of the lever 44 is fixed to the grip 45. And this grip 4
When 5 is rotated in the direction of the arrow, as shown in FIG. 7B, the tip end 44a of the lever 44 rotates, the wire 25a is pulled, and the brake device 23 operates.

8 and 9 show still another embodiment of the aero brake 26, in which one brake cable 24 is folded back inside one grip 18 and two points of the straight line portions on both sides of the folded back cable are connected to each other. The fixtures 46 and 47 fix it. Then, the coating of the folded-back portion between the cable fixtures 46 and 47 is removed to expose the internal wire 24a, and the exposed wire 24a is wound around the pulley 48. Further, the other brake cable 25 is folded back inside the other grip 19, and two points of the straight line portions on both sides of the folded back are fixed by cable fixing tools 49 and 50. Then, the coating of the folded portion between the cable fixing tools 49 and 50 is removed to expose the internal wire 25a, and the exposed wire 25a is wound around the pulley 51.

Further, opening holes 52 and 53 are opened near the pulleys 48 and 51, pins 54 and 55 are provided in the opening holes 52 and 53, and levers 56 and 57 are pivotally attached. Both levers 56 and 57 are attached symmetrically with respect to the aerobar 15, and are rotatable in the axial direction of the grips 18 and 19. The tips 56a and 57a of the respective levers are locked to the pulley arms 58 and 59 of the pulleys 48 and 51, and the other ends 56b and 57b of the respective levers are projected to the outside of the grips 18 and 19.

Then, while traveling in the aero position,
As shown by the chain double-dashed line in FIG. 9, if the other end 57b of the lever 57 is pushed to the rear of the grip 19 (in the direction of the arrow in the figure) with the finger of the rider, the lever 57 will center around the pin 55. Rotate counterclockwise. Therefore, the pulley 57 is moved forward of the grip 19 by the tip 57a of the lever 57, the wire 25a is pulled, and the brake device 23 is pulled.
Works. Similarly, with respect to the one lever 56, the brake device 21 is operated by pressing the other end 56b of the lever 56. Therefore, as shown in FIG. 8, even with a separate type aero bar in which the front end of the aero bar 15 is separated, the rider can brake without losing the aero position.

Therefore, the present invention can be variously modified without departing from the spirit of the present invention, and it is obvious that the present invention covers the modifications.

[0026]

According to the present invention, as described in detail in the above one embodiment, the brake cable is diverted to the aerobar, and two points of the brake cable are fixed to expose the wire. When the wire in a tensioned state is pressed, the wire is pulled and the brake device is activated. Therefore, the rider can perform braking without breaking the aero position, can perform braking quickly in an emergency, and can prevent accidents of braking mistakes.

When the tip of the lever is locked to the exposed wire, the wire is pulled by pressing the other end of the lever, and braking can be reliably performed with an extremely light operating force.

Thus, the aerobrake can be formed with a lightweight and simple structure without sacrificing the running performance of the competition bicycle, which contributes to the improvement of operability and safety.

[Brief description of drawings]

FIG. 1 is a side view of a competition bicycle showing an embodiment of the present invention.

FIG. 2 is a rear view of a main part of an aero bar, showing an example of an aero brake.

FIG. 3 is a side view of an aero brake.

FIG. 4 is a side view of the aero brake with the wire pulled.

FIG. 5 is a partially cutaway rear view of the aero bar, showing another embodiment of the aero brake.

6 is a cross-sectional view taken along the line AA of FIG. 5, (a) shows a brake open state, and (b) shows a brake operating state.

FIG. 7 shows still another embodiment of the aero brake,
(A) shows a brake open state, (b) shows a brake operating state.

FIG. 8 is a partially cutaway rear view of an aero bar showing still another embodiment of the aero brake.

9 is a sectional view taken along line BB of FIG.

[Explanation of symbols] 11 bicycle for competition 12 drop handle 13, 14 brake lever 15 aero bar 21, 23 brake device 24, 25 brake cable 24a, 25a wire 26 aero brake 31, 32, 33, 34 cable fixture 35, 36, 37,38 Cable fixing device 39,40 Opening hole 43,44 Lever 43a, 44a Tip 43b, 44b Other end

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 591065929 Yasuyuki Yamamoto 1-20-9 Higashino, Urayasu-shi, Chiba (71) Applicant 594203139 Mayumi Yamamoto 1-20-9 Higashino, Urayasu-shi, Chiba (72) Inventor Makoto Yamamoto 1-20-9 Higashino, Urayasu-shi, Chiba (72) Inventor Mayo Yamamoto 1-20-9 Higashino, Urayasu-shi, Chiba (72) Taihei Yamamoto 1-20-9 Higashino, Urayasu-shi, Chiba (72) Inventor Yamamoto Tenshin 1-20-9 Higashino, Urayasu City, Chiba Prefecture (72) Yasuyuki Yamamoto 1-20-9 Higashino Urayasu City, Chiba Prefecture (72) Inventor Mayumi Yamamoto 1-20-9 Higashino Urayasu City, Chiba Prefecture

Claims (3)

[Claims] 1. In a competition bicycle in which an aerobar is projected in front of a handlebar equipped with a brake lever, a brake cable connected to a brake device is diverted to the aerobar, and then connected to a brake lever of the handlebar.
An aero brake for a competition bicycle, characterized in that two points of a brake cable are fixed to the aero bar, and a wire inside the brake cable is exposed between the two points. 2. In a competition bicycle in which an aerobar is provided in front of a handlebar equipped with a brake lever, a brake cable connected to a brake device is inserted into the inside of the aerobar to bypass the brakebar, and then a brake lever of the handlebar. The two points of the brake cable are fixed to the inside of the aerobar, the wire inside the brake cable is exposed between these two points, and an opening hole is formed in the aerobar at a substantially intermediate position between these two points. Open the hole, pivotally attach a lever that is rotatable in the radial direction of the aerobar to the opening, lock the tip of the lever to the wire of the brake cable, and project the other end of the lever to the outside of the aerobar. Aerobrake for competition bicycles, which is characterized by 3. In a competition bicycle in which an aero bar is provided in front of a handle equipped with a brake lever, a brake cable connected to a brake device is inserted into the inside of the aero bar to bypass the brake lever of the handle. The brake cable is folded back near the grip of the aero bar, and the two points of the straight parts on both sides where the brake cable is folded back are fixed inside the grip, and the wire inside the brake cable is exposed between these two points. Then, the exposed wire is wound around a pulley, an opening hole is opened in a grip near the pulley, and a lever rotatable in the axial direction of the grip is pivotally attached to the opening hole.
An aerobrake for a competition bicycle, characterized in that the tip of the lever is locked to a pulley arm projecting on the folded-back side of the brake cable, and the other end of the lever is projected to the outside of the grip.