JP2001347981A - Automatic bicycle brake - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically brake a bicycle when a speed of the bicycle exceeds a set value. SOLUTION: This automatic bicycle brake system comprises a speed sensor, a power generator and a solenoid coil. The power generator operates when the speed of the bicycle exceeds the set speed, electric power of the power generator operates the solenoid coil to attract an iron disk directly connected to a brake wire and to automatically brake the bicycle. Because the automatic brake can freely change the set speed allowing the braking by the speed sensor, person's freedom is not restricted. Because a power generation amount increases in proportion to the speed, the bicycle is rapidly braked when the speed is accelerated, so that the automatic brake can effectively prevent danger.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bicycle brake.

[0002]

2. Description of the Related Art When running a bicycle, the wheels are rotated using human power, and when stopping, the brakes are applied using human power. Therefore, when traveling on a downhill road or the like, the speed must be too high and the brake must be applied with considerable force.

[0003] In the current bicycle, since the driver controls the speed, when the speed is incorrectly controlled and the speed is increased, the distance until the brake is stopped, that is, the braking distance is increased, which is dangerous. .

[0004]

SUMMARY OF THE INVENTION The present invention is to automatically apply a brake when the speed of a bicycle exceeds a set value. For this purpose, a speed sensor, which is a means for measuring the speed of the bicycle, and an electric brake which is activated by an instruction from the sensor are provided.

According to the present invention, a power generator for operating the electric brake is provided with a generator for generating power according to an instruction of a speed sensor when the speed exceeds a set speed. By the electric brake operated by the electricity from the generator, the speed of the bicycle does not exceed the set feed rate without the driver's awareness.

[0006]

In the above-mentioned automatic brake device, an electromagnetic coil serving as a braking means is attached to the wire in a non-contact manner so as to surround the brake wire, and the iron plate attracted to the coil is attached to the brake wire. Since it is directly attached, when the electromagnetic coil operates, the iron plate is attracted and the brake operates, that is, the operation is the same as the operation of manually applying the brake.

The generator serving as a power source for operating the above-mentioned automatic brake is constantly rotating with the rotor in contact with the tire. When the speed exceeds a set speed, a command is issued from a speed sensor which is a speed detecting means. As a result, power is generated and a load is applied. Therefore, at a speed equal to or lower than the set speed, the generator is rotating with no load. Therefore, when the generator starts to generate electricity at a speed exceeding the set speed, the load is applied to the rotation of the bicycle at the same time, and the speed is reduced by the power generation load of this generator.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A bicycle equipped with a cycle autobrake has an electromagnetic sensor as speed detecting means attached to a rear wheel shown in FIG. 1 and a front wheel tire shown in FIG. 1 and an electromagnetic coil 3 mounted in a non-contact manner around the brake wire having an iron plate directly mounted on the brake wire 4 in FIG. The electromagnetic sensor 1, the generator 2, and the electromagnetic coil 3 are electrically connected as one system.

FIG. 2 shows an operation system of the cycle autobrake. Reference numeral 6 indicates that when the speed sensor 1 exceeds the set speed, the speed sensor 1
N is a switch. Therefore, when the bicycle exceeds the set speed, the two generators work to supply electricity to the three electromagnetic coils, so that the iron disk 5 attached to the brake wire 4 immediately beside the electromagnetic coil 3 is an electromagnetic coil. Will be sucked. By this series of operations, even if a person does not pull the brake wire 4, the wire 4 is automatically pulled and the brake is applied.

Although the speed sensor 1 and the generator 2 can be those commonly used at present, an electromagnetic coil including an iron disk is developed for a bicycle. In this system, when the speed sensor 1 does not reach the set speed, the generator 2 is kept in a state in which no power is generated, so that a load is hardly applied to the running of the bicycle. When the speed exceeds the set speed, the generator 2 operates and a load is applied to perform braking. When the speed of the bicycle further increases, the amount of power generated by the generator 2 increases, and the current to the electromagnetic coil 3 increases.
As a result, the braking force is applied with a larger force.

[0011]

The cycle autobrake can be manufactured at a low cost because a commercially available speedometer and a generator are combined with an electromagnetic coil. Also,
Since the set speed at which the brakes are automatically applied can be freely changed, the system allows automatic braking without restricting individual freedom.

By setting the cycle autobrake to a specific speed, it is possible to automatically prevent the speed from going too high when traveling downhill, etc., which is useful for preventing danger.

[Brief description of the drawings]

FIG. 1 is an installation diagram of a cycle auto brake.

FIG. 2 is a system diagram of a cycle autobrake.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Speed sensor 2 Generator 3 Electromagnetic coil 4 Brake wire 5 Iron disk 6 Switch

Claims (3)

[Claims] 1. A speed detecting means mounted on a bicycle body and detecting a speed of the bicycle, a generator operated based on a result from the speed detecting means, and a braking means operating a brake by electric power from the generator. Cycle auto brake equipped with. 2. The braking means comprises an electromagnetic coil attached to a brake wire, and an iron plate attached to the brake wire attracted to the coil, and the braking means operates at a speed set to a bicycle speed. A cycle autobrake characterized by receiving electricity from a generator that generates electricity from a rotor that is in contact with the tires and then using an electromagnetic coil to automatically apply a brake by attracting an iron plate. 3. The cycle autobrake includes a bicycle speed sensor and a generator that contacts the tire and increases the amount of power generation in proportion to the number of rotations of the tire. A cycle autobrake, characterized in that the load applied by the machine is directly applied to the tires, and at the same time, the brake of the attractive force of the electromagnetic coil that works by the electric power proportional to the amount of power generated by the generator is applied twice.