JPS5959547A - Braking force holding device for vehicle - Google Patents

Abstract

PURPOSE:To make the holding of braking force attainable in an easy manner, by checking the reset motion of a brake pedal in a way of generating such an operation command signal indicating that car speed comes below the specified speed and the brake pedal's operating acceleration goes beyond the specified value. CONSTITUTION:In the case where car speed comes below the specified speed (about 5km/h), when a driver, intending to hold the hold braking force, operates a brake pedal 1 with a speed more than the specified operating acceleration, a continuous rating current is given to a motor 20 by way of a computer, rotating the motor, and with this rotation, a sliding member 22 moves forward via a pinion 23 and a rack 22a. As a result, the sliding member 22 forcibly presses the other end 14c of a spring 14 and the diameter of a coil part 14a is contracted to some extent whereby the coil part 14a is frictionally engaged with the peripheral surface 13a of a rotating member 13, meaning that rotation of the rotating member 13 in a counterclockwise direction is restricted. That is to say, a reset motion of the brake pedal is checked and the braking force produced by operation of a service braking system is thus held up.

Description

[Detailed description of the invention]

The present invention relates to a dual-use braking force retention device that prevents the brake pedal from returning and retains the braking force without manual effort after the brake pedal is depressed to stop the vehicle. With this conventional cage, the 7th Kogo Tokko Sho F14-710tJ
There is one point in the publication, but in the conventional system, an operation command signal is sent to the actuator to prevent the return movement of the brake pedal, which controls the service brake thread of the electronic image. , the control unit issued a signal 8 when the state of zero stopping speed continued for a set time (approximately 2 seconds IJl) based on the eastward rotation of the drive line σ). Koj. This may be to distinguish between the locking of the blood wheel during deceleration of the vehicle and the actual stopping of the blood wheel, or because the brake pedal continues to be pressed for the above set time after the vehicle stops, the braking force is maintained and the brake pedal is not pressed. There was a drawback that the operation seemed like a furnace. An object of the present invention is to improve the control section and eliminate the above-mentioned drawbacks. In the present invention, the control unit detects whether the vehicle has stopped or is below the first set speed based on the rotation of the drive system of the vehicle, and also detects the depression acceleration of the brake pedal based on the interlocking of the brake pedal. The actuation command signal is configured to be transmitted when the pedal acceleration is equal to or greater than the set pedal acceleration when the gear is lower than the first gear. The set stopping speed is set at a value of several m/h (approximately 5#J!/h) or less, which does not pose a safety problem even if the m wheel locks, and the set pedal acceleration is set at a value greater than the range for n. Set to T. When trying to maintain braking force, the driver consciously presses the brake pedal in a state where the brake pedal is depressed. The hassle and stiffness of operation is reduced to a large extent compared to the conventional method. When it is mistakenly determined that the condition has passed the set point, an operation command signal is automatically sent to the actuating section, and the brake pedal is returned to its original position.
With the present invention, there is no need to worry about such things. Historically, in the present invention, the acceleration of the brake pedal is used as a basis for determining whether the activation command signal is issued or not. In order to achieve this, a flake petal operation is required.Hereinafter, embodiments of the present invention will be explained based on the drawings. Rika~
In Figure 3, with the brake pedal, the bracket 2 fixed to the M body is rotated about the pin 8 as a fulcrum.
When the pedal 1 is depressed (rotated clockwise in Fig. 1), the piston of the brake master cylinder M of the service brake thread is pushed by the bushing rod 4! ! l
Braking force is generated by the operation of the service brake thread. 5# This is an actuating part for selectively preventing the return interlocking of the brake pedal 1. The rack gear 6 is fixed to the brake pedal 1 with a bolt 7, and the lower edge of the central window has a
γ1 is provided, and the own pinion gear 9 meshes with γ1. Pol l-10 to the pinion gear 9-piece bracket 2
A shaft that rotatably passes through 1]
2. A bracket n7 is provided so as to rotate integrally on the top of the bracket]
The rotating member 18 on the opposite side is also attached to the shaft 1
2 so as to rotate integrally with it. [1 turn of the mouth g
A splinter member 14 is disposed on the outer peripheral side of the lS phase]3.
There are 1. #The spring member 14 is welded to the coil part 14a which should be frictionally engaged with the center direction 18a of the rotating part) phase 18 and the bracket 1].
One end 141) and the other end 14. c.
It has and is. In the free state of the splinter member 14,
Coil part 14. Inner diameter of a

[Rotating sound 1s material] Circumference of 8 Un
] 3 It is slightly larger than the outer diameter of part a. A pin 6 is provided on the support 12 to prevent the splinter member 13 from moving out. ■7.18 is Watsunya. The coil s of the splinter member 14 ] 4 ac; lr and others @ 14C are pushed γ to the upper left in FIG.
cover Under this frictional engagement σ-shaped elongation

[K, Rotating M5 material] 8 is the first
In the diagram, turn υ1 to the clockwise direction, turn I, and turn coil part 14.
The frictional force between a and the rotating heat material 131M1 causes an action to reduce the diameter of the coil portion 14°a, and the coil gllS]4・a
is wrapped around the rotating member 8, and the rotation of the rotating member 18 is blocked and becomes obsolete. Contrary to this 11, the rotating heat material I3 is the first
In the figure, when trying to rotate in the direction of g1°, the coil part 1
4.Friction between a and rotating member +8 Coil sweat lX14
, a has the effect of enlarging the diameter of the coil part 1.
4IaD is not wrapped around the rotary member 3, but can be rotated. 19 is an actuator for pushing the other end 14c of the splinter member 4, which is fixed to the bracket F7'' I
The electric motor 20 is fixed to the bracket 11, and the bracket 2 is slidably supported by the bracket 2 and is also twisted with the rack gear activation material 22. This print 111ffls
The rack gear 22aG=I of the material 22 is fixed to the rotating shaft of the electric (to) 20, and also meshes with the pinion gear 23 and slides 1
The bifurcated head 22b of the member 22 locks the bent portion 14d of the other end 14C of the splinter member 4. Print! lot g
Attached to ls material 22, retainer 2 and bracket h
21jl is interposed with a return spring 25 which attaches the bracket fD1 member 22 to the lower right in FIG. 1 as an interposed pn. The control unit 26 that energizes the turtle Iiso 20, that is, gives an operation command signal to the Pt width 1 part 5, controls the opening and closing of the switch 27 that opens and closes the drive circuit of the electric motor 20, as shown in No. 4-1. computer 28 and this computer 28
Vehicle speed detection that sends a signal to '&i29. It consists of an accelerator pedal depression switch 80 and a variable resistor 31 interlocked with the brake pedal 1. As is well known, the vehicle speed detector 29 sends a multiplex signal to the rotation of the drive system of the m-cars, and can also be used as a detector for the 1-F meter on the stop surface. As is well known, the accelerator pedal depression-responsive switch 30 is switched from closed to open when the accelerator pedal is depressed. The 5I resistor 81 is connected to the bracket 1 of the rotating part 8 as shown in the first and second figures.
1, and the bracket] 1 is fixed to the PT and the resistor 31a.
and a sliding body fixed to the rotating member 18; i ] 1)
Therefore, there are marks IJ[1] on both ends of the resistor 31a.
41b is applied to the computer 28 as a signal for sliding. Computer 28 firstly
Based on the signal from the speed detector 29, it is determined whether the vehicle speed is below the set speed or not, and if the vehicle speed is above the set stopping speed, the accelerator pedal depression response switch: 3 (based on the signal from 1) It then starts determining whether or not the brake pedal is released based on the signal from the n1v resistor 81 under the condition that the speed is below !4i and the accelerator pedal is released. It starts determining whether or not the pedal depression acceleration is equal to or higher than the i-stable pedal acceleration, and if the pedal depression acceleration exceeds the set pedal acceleration, switch 2 is activated in response to the occurrence of the set pedal acceleration for the odd-numbered time.
7 is closed, and the switch 272 is opened in response to the occurrence of the even-numbered set depression acceleration. In FIG. 4, 82 is a battery, and 83 is a Gj induction switch. Next, the effect will be explained. When the heavy vehicle is traveling at a speed 5 higher than the set vehicle speed, at least the vehicle speed switch 30 is open.
The machine 20 is not energized, and the sliding member 22 is held in the non-operating position by the return spring 25, which is most displaced to the lower right at the 1st rA, and the spring member 14 is in a free state and its coil portion 14 & It is separated from the circumferential surface 13a of the rotating member 13, and the rotating member 18 can freely rotate in any of the clockwise and counterclockwise directions in FIG. Therefore, after the brake pedal 1 is once depressed, the brake pedal 1 is returned to its return position by a return spring (not shown). When the brake pedal 1 is depressed when the vehicle speed is higher than the set vehicle speed, the brake pedal 1 rotates clockwise about the fin 8 in FIG. 1 force is generated and the tonne speed decreases. During heavy braking, the accelerator pedal is released, so the accelerator pedal switch 29 is closed. Therefore, when the vehicle speed is lower than the set vehicle speed, if the driver depresses the brake pedal 1 at a speed higher than the set acceleration to maintain braking force, the computer 28 closes the switch 27 and switches the electric motor 20 on. When electricity is applied, the electric motor 20 rotates the pinion gear 28 counterclockwise in FIG. 8, so that the sliding member 22 slides toward the upper left in FIG.
c is pushed, and the coil portion 14a of the spring member 14 becomes thin and frictionally engaged with the circumferential surface 13a of the rotating member 13, so that the rotating member 13 cannot rotate in the counterclockwise direction δ1'' in FIG. 1. In order for the brake pedal 1 to rotate counterclockwise in FIG. 1 and return to its original position, the rotating member 18 must rotate counterclockwise in FIG. The return movement of the pedal 1 is prevented 2n, and the braking force by the force a1 of the service brake system is maintained 2r.When the driver depresses the accelerator pedal to start the vehicle, the accelerator pedal depression switch 29 is opened and the computer 28 is activated. The switch 27 is turned 5?r to stop energizing the electric motor 20. As a result, the +1 member 22 is returned to the return position by the return spring 25 and the spring member 14, and the diameter of the coil portion 14a of the spring member 14 is expanded. The rotating member 130 is separated from the peripheral surface 13a by 1, and the rotating member 1
8 becomes able to rotate counterclockwise in FIG. 1, the brake pedal 1 returns to its original position and the braking force is eliminated. The braking force can also be released by re-depressing the brake pedal 1 at a predetermined depressing acceleration or higher.

[Brief explanation of drawings]

No. 1 (2) shows the operating part of an embodiment of the present invention;
The figure is a sectional view taken along the line 1'' in Fig. 1, Fig. 3 is a view from the ■ direction in Fig. 1, and Fig. 4 is a diagram showing the control section.l... Brake pedal, 5... VE QIJ+ section , 20...-turtle i1+
control unit, 27... switch, 28. ,
・Computer, 29... Heavy speed detector, 81... Variable resistor patent applicant Reio Nakai, representative of Aisin Seikken Co., Ltd. Proceedings Amendment ([1) A No. Commissioner of the Japan Patent Office, 1, of the case Indication Patent Application No. 171117 of 1982 2, Name of invention 8 Power retention device for vehicle 8 Relationship with the case of the person making the amendment Patent Dewajin (00υ Aisin Seiki Co., Ltd., '°2) 1 Representative Person Rei Nakai 4, Figure 2 5 of the drawing subject to the amendment, Contents of the amendment

Claims (1)

[Claims] Work that responds to the operation command signal and prevents the brake pedal's brake pedal, which controls the vehicle's screw brake thread, by responding to the operation command signal 11
Based on the rotation of the rabbit meat drive system, it is detected that the stopping speed has reached the set N soup point, and the acceleration of the brake pedal depression is #'? ! Detects that the acceleration of the pedal is equalized, and the set stop speed) is higher than the acceleration of the pedal... 1 actuating finger 4! A braking force retaining vagina for stopping both sides is provided with a control unit that transmits an i-signal.