JPH0215559U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is a diagram showing the main part thereof, FIG. 3 is a sectional view of the main part, FIG. 4 is a block diagram of a control circuit, and FIG. 5 is a block diagram of another control circuit. In the figure, 1: brake pedal, 2: brake detection switch (brake detection means), 3: control circuit (
control means), 4: accelerator pedal, 5: accelerator detection switch (accelerator detection means), 6: activation operation switch, 7: release operation switch, 8: battery, 9: operation lever, 10A, 10B: rear wheel, 11: Actuator, 12: Reducer, 13:
Electric motor, 13A, 13B: Power supply section, 14: Balance lever, 15: Connection mechanism, 16: Equalizer, 17, 18: Connection member, 18A: Large diameter section,
19: Cylindrical member, 20: Spring, 21: Brake force detection switch (brake force detection means), 2
2, 23: Relative position displacement detection switch (relative position displacement detection means), 24: Bracket member, 31:
Normally open contact of ignition relay, 32: First relay, 33-35: Normally open contact of first relay, 36:
2nd relay, 37: 3rd relay, 38: Normally open contact of 2nd relay, 39: Normally closed contact of 2nd relay, 4
0: Normally open contact of the third relay, 41: Normally closed contact of the third relay, 42: Fourth relay, 43: Normally open contact of the fourth relay, 44: Normally closed contact of the fourth relay, 45
:resistance.

Claims (1)

[Claims for Utility Model Registration] (1) In a device that uses a DC electric motor and operates the parking brake automatically or by a switch operation, the operating speed of the motor is limited only when the electric motor operates in the direction in which the parking brake is released. A parking brake device characterized by being provided with a pressing means. (2) In the control circuit for the DC motor, a control lever, an actuator, and a balance in which the operating force of the operating lever acts on one end, the actuating force of the actuator acts on the other end, and the braking force acts on an intermediate portion. A lever, an operation switch for activation and release, a relative position displacement detection means for detecting the relative position displacement of the balance lever, a brake force detection means for detecting the brake force, an output of the operation switch, and the relative position. control means for controlling the actuator based on the output of the displacement detecting means and the output of the braking force detecting means, and a normally open contact and a normally closed contact of one electric motor relay are arranged in series to One power supply part of the electric motor constituting the actuator is connected between the open contact and the normally closed contact, and the normally open contact and the normally closed contact of the other electric motor relay are also arranged in series to connect the normally open contact and the normally closed contact. Connecting the other power supply part of the electric motor between the contact and the normally closed contact,
According to claim 1, a resistance is provided between the normally open contacts, which are closed when the electric motor releases the parking brake, and a power source, or between the normally open contacts and the electric motor. Parking brake device as described.