JPH0441031Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a brake wire connection device necessary for the transmission system of the braking force when brakes are installed on all three wheels of a three-wheeled bicycle with two front wheels. It is related to.

(Prior art) Fig. 1 shows an example of a three-wheeled bicycle with two front wheels, in which 1 is a front wheel, 2 is a rear wheel, 3 is a frame,
3a is a head pipe, 4 is a handle post, 5 is a handle, and 6 is a brake body provided on each of the front wheels 1.

FIG. 10 shows an example of a method of arranging brake wires in this type of three-wheeled bicycle, in which brake levers 7 and 8 are provided on the left and right grips 5a of the handlebar 5, respectively, and one brake lever 7
This brake lever 7 is used for the front wheel brake.
The two front wheel brake wires 9 and 10 are connected to the two front wheel brake wires 9 and 10, and each terminal is connected to the brake body 6 provided on the left and right front wheels 1, respectively, and the other brake lever 8 is used for the rear wheel brake. One rear wheel brake wire 11 is connected to the rear wheel brake wire 11.

Moreover, FIG. 11 shows another conventional method.
In this embodiment, brake wires 9 and 10 connected to the brake body 6 are connected by a coupler 12 in the middle thereof, and this coupler 12 is connected to the brake lever 7 via one brake wire 13.

(Problems to be Solved by the Invention) As described above, in the conventional device shown in FIGS. 10 and 11, two brakes must be operated using the brake lever 7 on one side.

The method shown in FIG. 10 is unfavorable in terms of appearance because the arrangement of the brake wires 9, 10, and 11 is asymmetrical, and also because this method uses long brake wires, the brake wires are attached when the steering wheel is operated. As a result of the large movement of the brake lever, there is a problem that the wire becomes easily caught on other objects, and furthermore, special brake levers and brake wires must be prepared.
If this brake wire breaks during use, there is a problem in that it cannot be replaced with a normal brake wire.

Furthermore, the device shown in FIG. 11 solves to some extent the problem of the device shown in FIG.
Since the brake wires 9 and 10 are bent in different directions and are greatly different from each other, the frictional resistance of the inner wire against the outer wire becomes unbalanced. If the brakes are operated in this state, there is a problem in that the brakes are partially applied and the handlebars are taken off, which impairs the safety of bicycle riding.

(Means for Solving the Problems) In order to solve the above-mentioned problems, in the present invention, one input-side outer wire connected to the brake lever is locked to the case, and it is connected to two brake bodies, respectively. The two output side inner wires to be fixed are fixed to the case, one input side inner wire is fixed to the movable outer receiver, and two output side outer wires are fixed to the movable outer receiver, and the movable outer wire is fixed to the movable outer receiver. A brake wire connecting device is constructed by arranging the outer receiver and the case so as to be relatively movable along the axial direction of the wire.

Further, a cam having two stable positions, high and low, is interposed at the engagement portion between the case and the input-side outer wire to form a bicycle parking brake operating device.

(Operation) Since the present invention is as described above, one input brake wire for operating the front wheel brake is arranged along the handle post and the head pipe, and the outer wire is locked from the case.
The two brake wires can be pulled out above the coupler.

Therefore, according to the present invention, the brake wires can be arranged compactly and almost evenly on the left and right sides without any difficulty, so that there is no imbalance in the frictional resistance between the outer wires and the inner wires even when the steering wheel is operated. As a result, the safety of riding this type of tricycle is improved.

Additionally, tricycles that are not equipped with a stand must be equipped with a parking brake device to prevent the bicycle from moving freely when the bicycle is parked. For this reason, conventional three-wheeled bicycles have a parking brake function, for example, by using a special brake lever with an additional locking mechanism.

In contrast, in the present invention, a cam with two stable positions, high and low, is interposed between the case for connecting the brake wire and the locking part of the input-side outer wire to create a bicycle parking brake operating device. A special brake lever like this is no longer necessary, and a regular brake lever will suffice.

Therefore, according to the present invention, it is easy to manufacture and also easy to operate.

(Example) Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 9. In the figure, the same reference numerals as the above-mentioned reference numerals indicate equivalent parts.

In this embodiment, as shown in FIGS. 1 and 2, the head pipe 3 of a three-wheeled bicycle with two front wheels is
Case 14 for coupler A according to the present invention is placed in the front part of a.
(See Figures 3 to 9) and brake lever 7.
The end of the outer wire 15a of one input brake wire 15 is connected to the case 14 via the outer receiver 16 and the detent 17, and the ends of the outer wire 15a are connected to the two brake bodies 6 provided on the front wheels 1, respectively. A lower edge portion 1 is formed by bending the output side inner wires 18a of the two connected output side brake wires 18 at the lower part of the case 14.
A nipple 18c is fixed to the end of the inner wire 18a to prevent it from coming off, and one input-side inner wire 15b is provided at the center of the rectangular bar-shaped movable outer receiver 19. It is fixed by inserting it into the hole 19a and tightening the screw 20, and also fixing the two output side outer wires 18b to the movable outer receiver 19, and aligning the movable outer receiver 19 and the case 14 with the axis of the wires. The brake wire coupling device is configured to be arranged so as to be relatively movable along the direction.

In addition, 14c is a bracket that bends the upper edge of the case 14 forward and has a screw hole into which the outer receiver 16 is screwed, and 14d is a hole provided in the center of the lower edge 14a so that the inner wire 15b passes through. , 21 is a cap screwed onto the end of the inner wire 15b.

Moreover, FIGS. 6 to 9 show an embodiment in which a bicycle parking brake operating device is provided in the apparatus of the previous embodiment.

In this embodiment, there is a hole in the upper part of the case 14.
4e (see FIGS. 7 and 9), and a shaft 22 that fits into this hole 14e is provided with a hole 22a that passes through it vertically, and a small diameter threaded portion 22b is provided protruding from one shaft end surface.

Further, a hollow shaft cylinder 23 with a flange is formed to be slidably fitted into the hole 22a, and a screw hole 23b into which the threaded portion 16a of the outer receiver 16 is screwed is provided inside the flange 23a side.

Further, two substantially rectangular plate-shaped bodies 24a that fit on the shaft 22 are arranged at intervals sandwiching the shaft cylinder portion of the flanged hollow shaft abutment 23, as shown in FIG.
The cam 24 is connected to one end at a portion where the plate thickness is indicated by a dotted line in FIG. 6, and has a lever portion 24b projecting in an angular shape to form a cam 24 having two stable positions at high and low positions.

Then, the cam 24 is fitted onto the shaft 22, and the flanged hollow shaft cylinder 23 is inserted from above so as to pass through the inner cavity of the cam 24 and the hole 22a.
The threaded portion 22b side of this shaft 22 is fitted into the hole 14e provided in the upper part of the case 14, and the nut 2 is inserted into the outwardly protruding threaded portion 22b via the washer 25.
Screw together 6.

Further, the outer receiver 16 is screwed into the screw hole 23b of the flanged hollow shaft cylinder 23 via the detent 17,
The input side brake wire 1 is connected to this outer receiver 16.
Connect 5. The other configurations are the same as those of the embodiment described above.

Next, the operation of the device of the present invention constructed as described above will be explained.

In FIGS. 1 and 2, the brake lever 7
When the inner wire 15b of the input brake wire 15 is operated in the direction of arrow B in FIG.
is fixed, this movable outer receiver 1
The outer wires 18b of the left and right output side brake wires 18 connected to the outer wires 18 are respectively operated in the direction of the arrow C with respect to the case 14, as shown in FIG. In this case, the inner wire 18a
is the lower edge 1 of the case 14 via the nipple 18c.
4a, the output side brake wire 18 results in the inner wire 18a operating relative to the outer wire 18b as shown by arrow D in FIG. As a result of this operation, the brake bodies 6 provided on the left and right front wheels 1 are actuated to perform braking.

When the brake lever 7 is released, the state shown in FIG. 5 returns to the state shown in FIG. 3 by the action of a return spring (not shown) provided in the brake device.

Next, the operation of the parking brake operating device will be explained with reference to FIGS. 6 to 9.

In FIG. 6, when the lever portion 24b of the cam 24 is rotated in the direction of arrow E to bring it into the state shown in FIG.
As a result, the outer wire 15a of the input brake wire 15 is connected to the inner wire 15b via the flanged hollow shaft cylinder 23 and the outer receiver 16. It moves in the direction of arrow F in the figure to reach the state shown in FIG. 9, and brakes the front wheels 1 respectively in the same manner as described above.

In addition, in order to release this bicycle parking brake, lever part 2
4b may be rotated in the direction of arrow G in FIG. 8 to bring it into the state shown in FIG. 6.

(Effect of the invention) Since the invention is as described above, one input brake wire 15 for operating the front wheel brake is arranged along the handle post 4 and the head pipe 3a, and the outer wire 15a is locked. Remove the two brake wires 18 from the case 14
can be pulled out above coupler A.

Therefore, according to the present invention, the brake wires can be arranged compactly and almost evenly on the left and right sides without any difficulty, so that there is no imbalance in the frictional resistance between the outer wires and the inner wires even when the steering wheel is operated. As a result, the safety of running this type of three-wheeled bicycle is improved.

In addition, in the present invention, a case 14 for connecting brake wires and an input side outer wire wire 15 are provided.
A cam 24 having two stable positions, high and low, is interposed in the locking part with a to create a bicycle parking brake operating device, so a special brake lever as in the past is no longer necessary, and a normal brake lever can be used. It turns out.

Therefore, according to the present invention, manufacturing is easy, and in order to keep the brake applied when parking the bicycle,
Since it is only necessary to rotate the cam 24 by about 90 degrees via the lever portion 24b, the effect of easy operation and reliable operation can be obtained.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a three-wheeled bicycle with two front wheels equipped with the device of the present invention, Fig. 2 is a front view of the main parts thereof, and Fig. 3 is a front view partially showing the main parts of the device of the present invention in cross section. , FIG. 4 is a side view thereof, FIG. 5 is an operation explanatory diagram corresponding to FIG. 3, FIG. 6 is a partial front view of the device of the present invention with a bicycle parking brake operating device, and FIG. 7 is a side sectional view thereof. , FIG. 8 is an operation explanatory diagram corresponding to FIG. 6,
FIG. 9 is a side sectional view thereof, and FIGS. 10 and 11 are partial front views for explaining the conventional device. 1...Front wheel, 2...Rear wheel, 3...Frame, 3
a...Head pipe, 4...Handle post, 5
...Handle, 6...Brake body, 7, 8...
Brake lever, 11...Rear brake wire,
A...Coupler, 14...Case, 15...Input side brake wire, 15a...Outer wire, 1
5b... Inner wire, 16... Outer receiver, 17... Rotation stopper, 18... Output side brake wire, 18a... Inner wire, 18b...
Outer wire, 19...Movable outer receiver, 2
0...Screw, 22...Shaft, 23...Hollow shaft cylinder with flange, 24...Cam, 24b...Lever portion.

Claims (1)

[Claims for Utility Model Registration] 1. One input-side outer wire connected to a brake lever is locked to a case, and two output-side inner wires connected to two brake bodies, respectively, are locked to the case. one input-side inner wire is fixed to the movable outer receiver, two output-side outer wires are fixed to the movable outer receiver, and the movable outer receiver and the case are connected along the axial direction of the wires. A brake wire connecting device characterized in that the brake wire connecting device is arranged so that the brake wires can be moved relative to each other. 2. A brake wire connecting device characterized in that a cam having two stable positions, high and low, is interposed in the locking portion between the case and the input-side outer wire according to claim 1, thereby forming a parking brake operating device.