JPH0740830A - Brake device for vehicle - Google Patents

Abstract

PURPOSE:To provide a reliable braking capacity by operating a mechanical fail-safe mechanism when a power supply to an electric brake actuator is stopped. CONSTITUTION:A first spring holder 24 is fixed and a second spring holder 25 is arranged movably to the outer periphery of a master cylinder rod 22 for applying pressing action to a master cylinder 21 respectively, at a specified distance in axial direction, and a self-holding type solenoid 26 provided with a stopper 34 engaged with a recessed part 24A of the first spring holder 24 and a push-pull type solenoid 27 provided with a stopper 38 engaged with a recessed part 25A of the second spring holder 25 are provided. When power supply is stopped, engagement of the recessed part 25A of the second spring holder 25 with the stopper 38 is released, and the master cylinder rod 22 is operated mechanically to generate hydraulic pressure from the master cylinder 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle brake system, and more particularly to a vehicle brake system suitable for use in a vehicle equipped with an electric brake mechanism.

[0002]

2. Description of the Related Art Conventionally, a wired unmanned vehicle that is remotely controlled via a communication cable connected to a predetermined control device,
Wireless unmanned vehicles have been developed that are remotely controlled based on radio waves received from a control device. Among unmanned vehicles of this type, an electric brake actuator, a steering actuator, and a throttle actuator that operate based on the power supply from an on-vehicle power supply drive a brake mechanism that brakes the drive wheel and the steering wheel. There is a type of unmanned vehicle that steers and opens and closes the throttle valve of the engine.

[0003]

However, in the above-mentioned prior art, the power supply to the electric brake actuator, the steering actuator, and the throttle actuator from the on-vehicle power source is not possible due to insufficient capacity of the on-vehicle power source and other causes. When stopped, there was a problem that each of these actuators could not be operated. For this reason, in particular, when the power supply to the electric brake actuator is stopped, the brake mechanism cannot be operated, resulting in a problem that the unmanned vehicle cannot be accurately braked.

[0004]

It is an object of the present invention to improve the disadvantages of the above-mentioned conventional example, and in particular, by incorporating a mechanically fail-safe mechanism into an electric brake mechanism, when the power supply to the electric brake actuator is stopped. It is an object of the present invention to provide a vehicle brake device capable of exhibiting a reliable braking ability by activating a mechanical fail-safe mechanism even in such cases.

[0005]

According to the present invention, there is provided a brake actuation mechanism for actuating a brake main body mounted on a wheel, an electric brake actuator for driving the brake actuation mechanism based on power supply from a vehicle-mounted power source, and And a coupling mechanism that is coupled between the brake actuation mechanism and the electric brake actuator, and moves to the brake actuation mechanism side to bring the brake actuation mechanism into a driving state when the electric brake actuator is actuated. In a vehicle brake device, the connecting mechanism is detachably connected to the electric brake actuator side, and a brake operation assisting mechanism is attached to the connecting mechanism, and the brake operation assisting mechanism connects the connecting mechanism to the connecting mechanism. A connecting mechanism urging means for constantly urging the brake operating mechanism side,
When power is supplied from the vehicle-mounted power supply, the connection mechanism is held at the connection position with the electric brake actuator side against the urging force of the connection mechanism urging means, and when the power is not supplied from the vehicle-mounted power supply. Has a connecting mechanism holding means for releasing the holding state of the connecting mechanism with respect to the connecting position. This is intended to achieve the above-mentioned object.

[0006]

According to the present invention, when electric power is supplied from the vehicle-mounted power source to the electric brake actuator, the connecting mechanism holding means of the brake operation assisting mechanism resists the urging force of the connecting mechanism urging means. Since the connection mechanism is held at the connection position with the electric brake actuator side, when the electric brake actuator is driven by a predetermined braking operation, the electric brake actuator moves the connection mechanism to the brake operation mechanism side and operates the brake. As a result of driving the mechanism, the brake actuation mechanism actuates the brake body to brake the wheels. On the other hand, when the electric power supply from the vehicle-mounted power source to the electric brake actuator is stopped, the connecting mechanism holding means of the brake operation assisting mechanism releases the holding state of the connecting mechanism to the connecting position, so that the connecting mechanism has the electric brake. As a result of moving from the connection position with the actuator side to the brake actuation mechanism side, the brake actuation mechanism actuates the brake main body to brake the wheels. That is, since the brake operating mechanism is mechanically driven when the power supply from the vehicle-mounted power source to the electric brake actuator is stopped, the braking force can be maintained regardless of the stop of the power supply from the vehicle-mounted power source.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the vehicle brake device of the present invention is applied to a caterpillar traveling type unmanned vehicle will be described below with reference to the drawings.

First, a schematic structure of a caterpillar traveling type unmanned vehicle in this embodiment will be described with reference to FIG. 5. For example, the unmanned vehicle 1 steered by a remote control device (not shown).
On both sides of the vehicle body 2, a pair of tracks 6 and 7 each including a front wheel 3, a rear wheel 4, and a belt 5 spanning the both wheels are provided. A cable drum 8 that winds / unwinds the cable C connected to the control device is rotatably disposed via a pair of support members 9 and 10 and a support shaft 11 that are vertically installed on the vehicle body 2. Further, the support shaft 1 for the cable drum 8 is provided on the upper surface of the vehicle body 2.
Belt 13 hung between 1 and the motor drive shaft 12
A drum drive motor 14 that drives the cable drum 8 to rotate is provided.

At the center of the rear end of the vehicle body 2, a guide arm 15 for guiding the cable C fed from the cable drum 8 is rotatably supported in the vehicle width direction via a support mechanism 16. Furthermore, in the corner of the rear end of the vehicle body 2,
An operation box 18 having a main switch 17 for opening and closing an ignition switch, which will be described later, is provided. On the other hand, inside the vehicle body 2, a brake control unit 19 that houses an electric brake actuator 55, a brake actuator driver 54, a CPU 48, etc. for driving a brake mechanism described later is housed.

Next, the structure of the brake mechanism equipped in the unmanned vehicle 1 according to the present embodiment will be described with reference to FIGS. 1 to 3. The brake mechanism is connected to a brake caliper (not shown) of each wheel via a pipe 20. Connected master cylinder 21
, The master cylinder rod 22, the spring 23,
First spring holder 24 and second spring holder 2
5, a self-holding solenoid 26, a push-pull solenoid 27, a brake lever 28, a brake rod 29, and the like. In this case, the spring 23, the first spring holder 24, the second spring holder 25, the push-pull type solenoid 27, etc. constitute a brake operation assisting mechanism.

The structure of the brake mechanism will be described in detail. The master cylinder 21 is provided with a master cylinder rod 22 which is movable in the axial direction of the inside thereof. The hydraulic pressure generated by the downward pressing operation is transmitted to the brake caliper via the pipe 20 to brake each wheel. On the outer periphery of the master cylinder rod 22,
First through the hole that fits into the master cylinder rod 22
The regulation member 30 is fixed to the brake lever 28 side, and the second regulation member 31 is slidably fitted to the master cylinder 22 side through a hole fitted to the master cylinder rod 22.

A first spring holder 24 and a second spring holder 25 having holes for fitting the master cylinder rod 22 are fitted between the first restricting member 30 and the second restricting member 31, A spring 23 is provided between the first spring holder 24 and the second spring holder 25.
Is stretched. First spring holder 24 and second
The spring holder 25 is slidable in the axial direction of the master cylinder rod 22, and the movement of the first spring holder 24 is restricted by the first restriction member 30.
The movement of the spring holder 25 is restricted by a second restricting member 31 which is slidable up to the end of the master cylinder 21.

A self-holding solenoid 26 and a push-pull solenoid 27 are arranged near the master cylinder rod 22 at predetermined intervals in the axial direction of the rod 22. The self-holding solenoid 26 includes a solenoid main body 32, a stopper holder 33 slidable in the solenoid main body 32 in the axial direction, a stopper 34 slidable in the stopper holder 33 in the axial direction, and a stopper. It includes a return spring 35 fixed to 34 and a detected member 36 fixed to the end of the stopper holder 33 (see FIG. 2). The push-pull solenoid 27 includes a solenoid body 37, a stopper 38 slidable in the solenoid body 37 in the axial direction, a mounting member 39 fixed to an end of the stopper 38, and a mounting member 39.
And a tension coil spring 41 stretched between the base 40 and the base 40 (see FIG. 3).

In the self-holding solenoid 26, the stopper holder 33 and the stopper 34 are in the most locked position (see FIG. 2A) from the solenoid body 32, and the stopper holder 33 and the stopper 34 are drawn into the solenoid body 32. The first spring holder 24, which will be described later, can be held at the unlock position (see FIG. 2C).
The position where the stopper holder 33 and the stopper 34 are slightly retracted into the solenoid body (see FIG. 2 (b)) due to the pressing by the lower end of the is an intermediate state between the locked position and the unlocked position.

At the base end of the self-holding solenoid 26,
First micro switch 42 and second micro switch 4
3, the stopper holder 33 and the stopper 34 of the first micro switch 42 are the solenoid main body 3
When the unlocked position is pulled into 2, the "unlocked position" is detected due to contact with the detected member 36,
The second micro switch 43 is adapted to detect the “lock position” when the stopper holder 33 and the stopper 34 reach the lock position where they are most protruded from the solenoid main body 32, due to the contact with the detected member 36.

In the push-pull type solenoid 27, the stopper 38 is in an unlocked position (see FIG. 3 (a)) in which the stopper 38 slightly protrudes from the solenoid main body 37 due to the tensile force of the tension coil spring 41 when not energized. Solenoid body 3 against the tensile force of 41
7 is the most protruding position (see FIG. 3 (b)).

On the other hand, a recess 24A is formed in the first spring holder 24 so as to face the side where the self-holding solenoid 26 is provided, and a stopper 34 for the self-holding solenoid 28 is formed in the recess 24A. Engageable. Similarly, in the second spring holder 25, the concave portion 2 is provided so as to face the side where the push-pull solenoid 27 is provided.
5A is formed, and the stopper 38 of the push-pull solenoid 27 can be engaged with the recess 25A.

At the tip of the master cylinder rod 22,
As shown in FIG. 4, an engaging portion 22A having a concave shape slightly larger than the plate thickness portion of the brake lever 28 is provided, and the engaging portion 22A is provided at the central portion in the axial direction of the brake lever 28. The cutout portion 28A is arranged at a position facing to. Normally, the engagement portion 22A of the master cylinder rod 22 is engaged with the cutout portion 28A of the brake lever 28. On the other hand, when the power supply is stopped while the unmanned vehicle 1 is running or when an abnormality of the brake mechanism is determined by the CPU 48 (described later), the engaging portion 22 of the master cylinder rod 22 is engaged.
A is disengaged from the cutout portion 28A of the brake lever 28.

The brake lever 28 has one end side supported by a support shaft 44 and the other end side supported by a brake rod 29 via a mounting shaft 45. When the brake actuator 55 (described later) is operated, the brake rod 29 is pulled downward in FIG.
The reference numeral 8 is adapted to rotate clockwise around the support shaft 44 in FIG. This allows the master cylinder rod 2
2 is pushed toward the master cylinder 21 side.

When the brake lever 28 rotates, the first spring holder 24 moves downward in FIG. 1, and the end of the first spring holder 24 contacts the stopper 34 of the self-holding solenoid 26, so that the stopper 34 is temporarily retracted. Then, when the first spring holder 24 moves to the position P1, the stopper 34 projects by the returning force of the return spring 35 and engages with the recess 24A of the first spring holder 24, so that the first spring holder 24 is moved to the position P1. It is designed to hold. In this case, the stopper 38 of the push-pull solenoid 27 engages with the concave portion 25A of the second spring holder 25 to move the second spring holder 25 to the position P.
It is designed to be held at 2.

Next, the structure of the brake control system in this embodiment will be described with reference to FIGS. 6 and 7. An ignition switch 47 is connected to the plus terminal side of the vehicle-mounted power source through a fuse 46, and When the main switch 17 of the second operation box 18 is turned on, it is turned on. The ignition switch 17 has a CP
U48, the contact 50 of the relay 49, the contact 51 of the first micro switch 42, the first coil 26A of the self-holding solenoid 26, the relay 49, and the contact 5 of the relay 49.
The second coil 26B of the self-holding solenoid 26 is connected via the contact 53 of the second micro switch 43.

FIG. 6 shows a state when the ignition switch 47 is off, and FIG. 7 shows a state when the ignition switch 47 is on. In this case, the first coil 26A of the self-holding solenoid 26 is connected to the stopper holder 33
Also, the second coil 26B is a coil for holding the stopper 34 in the unlocked position described above, and the second coil 26B is a coil for holding the stopper holder 33 and the stopper 34 in the locked position described above.

Further, the CPU 48 has a push-pull solenoid 27 and a brake actuator driver 54.
And the brake actuator 55 and the condenser 56
And a sensor 57 for detecting the position of the brake lever 28, for example, are connected to each other, and the capacitor 56 is grounded. The CPU 48 controls the drive of the brake actuator 55 via the brake actuator driver 54 to control the self-holding solenoid 26 to be in the locked position or the unlocked position, and push-pull when the brake mechanism is determined to be abnormal (described later). The solenoid 27 is controlled to move from the locked position to the unlocked position.

Further, the CPU 48 determines whether or not there is an abnormality in the brake mechanism based on whether or not the position of the brake lever 28 detected by the sensor 57 and the position instructed from the remote control device match, and at the time of abnormality determination. Outputs an abnormality determination signal to the push-pull solenoid 27. Further, the CPU 48 outputs a brake actuator drive signal to the brake actuator driver 54 when the ignition switch 47 is turned on. The brake actuator 55 is driven by the brake actuator driver 54 to pull the brake rod 29 (see FIG. 1) downward in FIG.

When the ignition switch 47 is in the off state (see FIG. 6), the contact 50 of the relay 49 is turned on and the contact 52 is turned off, so that the first micro switch 4
The second contact 51 is turned off, and the contact 53 of the second micro switch 43 is turned on. In this case, FIG. 1 shows a state in which the ignition switch 47 is off. On the other hand, when the ignition switch 47 is in the on state (see FIG. 7), the contact 50 of the relay 49 is turned off and the contact 52 is turned on, and the contact 51 of the first micro switch 42 is turned on and the second micro switch is turned on. The contact 53 of 43 is turned off.

Next, the operation of the present embodiment configured as described above will be described with reference to FIGS.

When the driver of the unmanned vehicle 1 turns on the main switch 17 of the operation box of the vehicle body 2, the ignition switch 47 is turned on, and the self-holding solenoid 26 is turned on.
The stopper 34 and the stopper 38 of the push-pull solenoid 27 are each held in the above-mentioned locked position.
As a result, the stopper 38 of the push-pull solenoid 27 engages with the recess 25A of the second spring holder 25, so that the second spring holder 25 is held at the position P2 (see FIG. 1).

When the ignition switch 47 is turned on, power is supplied from the vehicle-mounted power source to the CPU 48.
As a result of the PU 48 outputting the drive signal to the brake actuator driver 54, the brake actuator driver 54 drives the brake actuator 55. In this case, the driver can drive the brake actuator 55 by operating a predetermined control device (remote control device).

As the brake actuator 55 is driven, the brake rod 29 is pulled downward in FIG. 1, so that the brake lever 28 rotates clockwise in FIG. 1 and the master cylinder rod 22 is pushed toward the master cylinder 21 side. , The first spring holder 24 moves to the second spring holder 25 side. Along with this, the stopper 34 of the self-holding solenoid 26 is temporarily retracted because it is pressed by the end portion of the first spring holder 24, but when the first spring holder 24 moves to the position P1, the stopper 34 is moved.
Is projected from the retracted state by the return force of the return spring 35 and engages with the recess 24A of the first spring holder 24. As a result, the first spring holder 24 is held at the position P1 (see FIG. 8).

When the unmanned vehicle 1 is running, the master cylinder rod 22 is appropriately pushed toward the master cylinder 21 side by the brake rod 55 and the brake lever 28 by driving the brake actuator 55. As a result, the hydraulic pressure generated in the master cylinder 21 is transmitted to the brake caliper (not shown) of each wheel via the pipe 20, so that each wheel is braked (see FIG. 9).

After the unmanned vehicle 1 stops running, when the operator operates the main switch 17 to turn off the ignition switch 47, the power supply from the vehicle-mounted power supply to the CPU 48 is stopped, so that the stopper of the self-holding solenoid 26 is stopped. 34 is disengaged from the recess 24A of the first spring holder 24, and the stopper 38 of the push-pull solenoid 27 is disengaged from the recess 25A of the second spring holder 25. As a result, the state shown in FIG. 9 is returned to the state shown in FIG.

On the other hand, when the unmanned vehicle 1 is running, if the power supply from the vehicle-mounted power source to the CPU 48 is stopped, or the fuse 46 is blown, or if the CPU 48 determines that an abnormality has occurred in the brake mechanism, Stopper 38 of push-pull solenoid 27 engaged with recess 25 actuator of second spring holder 25
However, since the pulling force of the tension coil spring 41 pulls it toward the solenoid main body 37 side, the engagement between the stopper 38 and the second spring holder 25 is released.

Along with this, the spring 23 which is in a compressed state between the first and second spring holders 24, 25.
However, the second restricting member 3
1 moves to the position where it abuts against the end of the master cylinder 21, the engagement between the engagement portion 22A of the master cylinder rod 22 and the cutout portion 28A of the brake lever 28 is disengaged, and as a result, the master cylinder rod 22 is moved to the master cylinder 21. Move to the side. In this case, the movement of the master cylinder rod 22 is restricted by the engagement between the stopper 34 and the recess 24A of the first spring holder 24. As a result, the hydraulic pressure generated in the master cylinder 21 is transmitted to the brake caliper (not shown) of each wheel via the pipe 20, so that each wheel is braked (see FIG. 10).

As described above, according to this embodiment, the stopper 38 of the push-pull solenoid 27 is pulled into the solenoid main body 37 by the pulling force of the tension coil spring 41 when the power supply from the vehicle-mounted power source is stopped. As a result, the stopper 38 and the recess 25 of the second spring holder 25
Since the engagement with A is released and the master cylinder rod 22 pushes the master cylinder 21 accordingly, in other words, when the power supply from the vehicle-mounted power source to the brake actuator 55 is stopped, the master cylinder rod 22 is mechanically driven.
Since the master cylinder 21 is pressed by the master cylinder 21, the master cylinder
It is possible to generate hydraulic pressure by means of No. 1, and as a result, it is possible to reliably apply braking to the unmanned vehicle 1 regardless of the stop of power supply from the vehicle-mounted power source.

Further, according to this embodiment, the master cylinder 2 operated by the electric brake actuator 55 is operated.
1, master cylinder rod 22, brake lever 28,
In contrast to the brake mechanism including the brake rod 29 and the like, the mechanically operated spring 23, the first and the second described above.
Since it has a structure incorporating a fail-safe mechanism composed of the spring holders 24, 25, the push-pull type solenoid 27, etc., it is not necessary to install a brake mechanism of another system for stopping the on-vehicle power supply.
It is possible to reduce the number of parts and costs.

In this case, in the present embodiment, the case where the unmanned vehicle is equipped with the hydraulic brake mechanism has been taken as an example, but the invention is not limited to the hydraulic type, and the unmanned vehicle is equipped with the brake pull cable type (mechanical type). ) It is also possible to equip the brake mechanism.

Further, in the present embodiment, the case where the above-mentioned brake mechanism is applied to the caterpillar traveling type unmanned vehicle is taken as an example, but the invention is not limited to the caterpillar traveling type unmanned vehicle, and the wheel traveling type unmanned vehicle, etc. It is also possible to apply the above-mentioned brake mechanism to other vehicles.

Further, in the present embodiment, the presence or absence of abnormality in the brake mechanism is determined based on the position of the brake lever 28 detected by the sensor 57, but the invention is not limited to the brake lever position, and it is detected by a predetermined sensor, for example. It is also possible to determine whether there is an abnormality in the brake mechanism based on the temperature of the brake actuator driver 54 or the like.

[0039]

As described above, according to the vehicle brake device of the present invention, when the power supply from the vehicle-mounted power source to the electric brake actuator is stopped, the brake operation assisting mechanism causes the coupling mechanism to be connected to the electric brake actuator side. In order to drive the brake operating mechanism by releasing the holding state at the connecting position and moving the connecting mechanism to the brake operating mechanism side, in other words, when the power supply from the vehicle-mounted power source to the electric brake actuator is stopped, the brake operating mechanism is mechanically operated. Since it is driven, the braking force can be maintained regardless of the stop of power supply to the electric brake actuator from the in-vehicle power supply.Furthermore, since the brake operation auxiliary mechanism is attached to the connection mechanism, it can be used when power supply is stopped. As a result, it is not necessary to install a separate system brake operation mechanism. , Thereby it is possible to achieve reduction and cost reduction of the number of parts, it is possible to obtain the excellent effect unprecedented called.

Further, in the vehicle brake device of the present invention, the connecting mechanism holding means of the brake operation assisting mechanism is electrically driven against the urging force of the connecting mechanism urging means when the abnormality determination signal is not output. If the configuration is such that it is held at the connection position with the brake actuator side, and the holding state of the connection mechanism for the connection position is released when the abnormality determination signal is output, when an abnormality such as the operating state occurs on the electric brake actuator side. Since the brake actuating mechanism can be driven also, there is an effect that the braking force can be maintained regardless of the occurrence of an abnormality such as an operating state on the electric brake actuator side.

In addition, in the vehicle brake device of the present invention, the brake operation assisting mechanism is electrically braked against the urging force of the connecting mechanism urging means when the power is supplied or when the abnormality determination signal is not output. If the configuration is such that the connection position of the connection mechanism with the actuator side is released and the holding state of the connection mechanism with respect to the connection position is released when power is not supplied or when an abnormality determination signal is output, power from the on-board power supply to the electric brake actuator is Since the brake actuation mechanism can be driven even in the event of a supply stop or an abnormality in the operating state on the electric brake actuator side, the power supply to the electric brake actuator from the vehicle-mounted power source can be stopped or the operating state on the electric brake actuator side can be changed. It is possible to maintain the braking force regardless of the occurrence of an abnormality. The ability, there is an effect that.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of a main part of a brake mechanism according to an embodiment of the present invention.

FIG. 2 shows each state of the self-holding solenoid in this embodiment, FIG. 2 (a) shows a state in a locked position, and FIG.
FIG. 2B is an explanatory diagram showing a state at an intermediate position between the lock position and the unlock position, and FIG. 2C is a diagram showing a state at the unlock position.

FIG. 3 shows each state of a solenoid in this embodiment,
FIG. 3A is an explanatory view showing a state in which the unlock position is set, and FIG. 2B is an explanatory diagram showing a state in which the lock position is set.

FIG. 4 is an explanatory diagram showing a configuration of an engagement portion on a tip end side of a master cylinder rod in the present embodiment.

FIG. 5 is a perspective view showing a schematic configuration of an unmanned vehicle in the present embodiment.

FIG. 6 is a block diagram showing a state of each contact when the ignition switch is turned off in the present embodiment.

FIG. 7 is a block diagram showing a state of each contact when the ignition switch is turned on in the present embodiment.

FIG. 8 is an explanatory diagram showing the positions of a self-holding solenoid and a push-pull solenoid when the brake actuator operates in this embodiment.

FIG. 9 is an explanatory diagram showing the positions of a self-holding solenoid and a push-pull solenoid when the vehicle is traveling in this embodiment.

FIG. 10 is an explanatory diagram showing the positions of the self-holding solenoid and the push-pull solenoid when the power supply is stopped in this embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Unmanned vehicle 21 Master cylinder 22 as a brake operating mechanism 22 Master cylinder rod as a connecting mechanism 23 Spring as a connecting mechanism urging means 24 First spring holder 25 Second spring holder 26 Self-holding solenoid 27 As a connecting mechanism holding means Push-pull solenoid 28 Brake lever 29 Brake rod 48 CPU as determination means 55 Brake actuator as electric brake actuator 57 Sensor as detection means

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 13, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

The structure of the brake mechanism will be described in detail. The master cylinder 21 is provided with a master cylinder rod 22 which is movable in the axial direction of the inside thereof. The hydraulic pressure generated by the downward pressing operation is transmitted to the brake caliper via the pipe 20 to brake each wheel. On the outer periphery of the master cylinder rod 22,
First through the hole that fits into the master cylinder rod 22
The restriction member 30 is fixed to the brake lever 28 side, and the second restriction member 31 is fixed to the master cylinder 22 side through a hole that fits into the master cylinder rod 22.
There is .

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

A first spring holder 24 and a second spring holder 25 having holes for fitting the master cylinder rod 22 are fitted between the first restricting member 30 and the second restricting member 31, A spring 23 is provided between the first spring holder 24 and the second spring holder 25.
Is stretched. First spring holder 24 and second
The spring holder 25 is slidable in the axial direction of the master cylinder rod 22, and the movement of the first spring holder 24 is restricted by the first restriction member 30.
The movement of the spring holder 25 is restricted by the second restriction member 31.

Claims (3)

[Claims] 1. A brake actuation mechanism that actuates a brake body mounted on a wheel, an electric brake actuator that drives the brake actuation mechanism based on power supply from an on-vehicle power supply, the brake actuation mechanism and the electric brake. A vehicle brake device comprising: a coupling mechanism that is coupled to an actuator and that moves to the brake actuation mechanism side when the electric brake actuator is actuated to bring the brake actuation mechanism into a driving state. The mechanism is detachably connected to the electric brake actuator side, and a brake operation assisting mechanism is attached to the connecting mechanism, and the brake operation assisting mechanism constantly biases the connecting mechanism toward the brake operating mechanism side. And a connecting mechanism urging means for connecting the connecting mechanism when the electric power is supplied from the vehicle-mounted power source. The connecting mechanism is held in the connecting position with the electric brake actuator side against the urging force of the biasing means, and the holding state of the connecting mechanism with respect to the connecting position is released when the electric power is not supplied from the vehicle-mounted power source. And a connecting mechanism holding means for controlling the vehicle brake device. 2. A brake actuation mechanism that actuates a brake body mounted on a wheel, an electric brake actuator that drives the brake actuation mechanism based on power supply from a vehicle-mounted power source, the brake actuation mechanism and the electric brake. A vehicle brake device that is connected to an actuator and that includes a connecting mechanism that moves to the brake operating mechanism side when the electric brake actuator is operating to bring the brake operating mechanism into a driving state, Detecting means for detecting an operating state and the like on the type brake actuator side, and a determining means for determining whether or not there is an abnormality in the operating state or the like based on the detection result of the detecting means and outputting an abnormality determining signal when the abnormality is determined. The connection mechanism is attached to and detached from the electric brake actuator side. A brake operation assisting mechanism attached to the connecting mechanism, and the brake actuating assisting mechanism includes a connecting mechanism urging means for constantly urging the connecting mechanism to the brake operating mechanism side, and the determining means. When the abnormality determination signal is not output, the coupling mechanism is held in the coupling position with the electric brake actuator side against the biasing force of the coupling mechanism biasing means, and the abnormality determination signal from the determination means is output. A braking device for a vehicle, comprising: a connecting mechanism holding means for releasing a holding state of the connecting mechanism to the connecting position at the time of output. 3. A brake actuation mechanism for actuating a brake body mounted on a wheel, an electric brake actuator for driving the brake actuation mechanism based on power supply from a vehicle-mounted power source, the brake actuation mechanism and the electric brake. A vehicle brake device that is connected to an actuator and that includes a connecting mechanism that moves to the brake operating mechanism side when the electric brake actuator is operating to bring the brake operating mechanism into a driving state, Detecting means for detecting an operating state and the like on the type brake actuator side, and a determining means for determining whether or not there is an abnormality in the operating state or the like based on the detection result of the detecting means and outputting an abnormality determining signal when the abnormality is determined. The connection mechanism is attached to and detached from the electric brake actuator side. A brake operation assisting mechanism attached to the connecting mechanism, and the brake actuating assisting mechanism connects the connecting mechanism urging means for constantly urging the connecting mechanism to the brake operating mechanism side; When the power is supplied or when the abnormality determination signal is not output from the determination means, the connection mechanism is held at the connection position with the electric brake actuator side against the urging force of the connection mechanism urging means, A vehicle characterized by comprising a connecting mechanism holding means for releasing the holding state of the connecting mechanism with respect to the connecting position when power is not supplied from the vehicle-mounted power source or when an abnormality determination signal is output from the determining means. Brake device.