JPS60116546A - Antiskid brake device - Google Patents

Abstract

PURPOSE:To properly distribute braking pressure and prevent a wheel from being locked by connecting a first modulator for the front components to a second modulator for the rear components by means of a connecting pipe and providing a pressure controlling means midway in said connecting pipe. CONSTITUTION:Modulators 8a, 8b are provided respectively in each piping 6a, 6b, which connects each of front and rear master cylinders 4a, 4b to each of front and rear side calipers 10a, 10b, respectively. Both of these modulators 8a, 8b are connected by means of a connecting pipe 56, in which a pressure control means 16 is provided in the midway point. The pressure control means 16 consists of a solenoid valve 58, which controls the opening and closing of the connecting pipe 56, and a pressure control chamber 62. Electronic control parts 14a, 14b controls each modulator 8a, 8b respectively and also the solenoid valve 58, based on speed signals from the speed of rotation sensors 12a, 12b for each wheel, to properly carry out the distribution of braking force.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an anti-skin braking device, and in particular, to an anti-skin braking device that properly distributes braking pressure sent from both front and rear mask cylinders to respective calipers between respective modulators. The present invention relates to an anti-skid brake device that prevents front and rear wheels from locking and shortens braking distance.

[Technical Background of the Invention] An anti-skid brake device includes a rotational speed sensor of a wheel, an electronic control unit that issues a braking signal of braking force based on a detection signal from the rotational speed sensor, and a braking device that performs braking in response to this braking signal. The main component is a modulator that controls pressure. A mask cylinder that generates hydraulic pressure when a brake is operated is connected to the upstream side of the modulator, and a caliper that brakes the wheels is connected to the downstream side of the modulator.

As a result, during sudden braking, the hydraulic pressure from the mask cylinder is reduced to a level that does not cause locking, preventing skidding due to wheel locking, ensuring directional stability of the vehicle, and shortening braking distance.

[Background Art d Problems] By the way, conventionally, no two-wheeled vehicle has been equipped with an anti-skid brake device, but if an anti-skid brake device for a four-wheeled vehicle is applied, it will be necessary to Generally, each brake device is installed in a separate system. For this reason, only an expert can control the front and rear braking pressures to the optimum pressure, and during sudden braking, there will be a difference in the braking force, and only one wheel will lock, causing a skid. , there is a risk of falling, and there are disadvantages in that the braking distance cannot be shortened.

[Object of the Invention] Therefore, an object of the present invention is to provide a communication pipe that communicates the first modulator for the front and the second modulator for the rear, and to provide pressure regulating means in the middle of the communication pipe, in order to eliminate the above-mentioned disadvantages. By providing this, the braking pressure sent from both the front and rear mask cylinders to the respective calipers is properly distributed,
``Anti-skin braking device that can prevent wheels from locking and skidding, ensure maneuverability and stability of a vehicle, and shorten braking distance.''

"Structure of the Invention" To achieve this object, the present invention includes a mask cylinder that generates hydraulic pressure when the brake is operated, a wheel rotation speed sensor, and a detection signal from the rotation speed sensor to generate a braking signal of braking force. In the Annaskino 1 brake system, which is composed of an electronic control section, a modulator that receives the braking signal and controls the braking pressure, and a caliper that brakes the wheels using the pressure from the modulator, a first modgierator for the front and a second modifier for the rear are used. A communication pipe is provided to communicate with the modulator, and a solenoid valve whose opening and closing are controlled by the first and second electronic control units and a piston are installed in the middle of the communication pipe.
A feature of the system is that it is equipped with a pressure regulating means consisting of a pressure regulating chamber.

[Embodiments of the Invention] Examples of the invention will be described in detail below based on the drawings.

1 to 4 show embodiments of this invention. 1st
In the figure, -2 is an anti-skid/7° brake device for a two-wheeled vehicle. This anti-skinned brake device 2 is
This system connects conventional anti-skin braking devices, which are installed in separate systems to the front and rear wheels of a two-wheeled vehicle. That is, the first modulator 8a is connected to the first front mask cylinder 4a via the first pipe 6a, and the first caliper 10 is also connected to the first modulator 8a via the first pipe 6a.
Connect a. Further, a first rotational speed sensor 12a that detects the rotational speed of the front wheels is connected to the first electronic control section 14a,
This first electronic control section 14. a are respectively connected to the first modulator 8a and six circumferential pressure means 16, which will be described later.

Similar to the front side, the rear side also connects a second modulator 8b to the rear master cylinder 4b via a second pipe 6b.
The second calipers 10b are sequentially communicated. Further, a second rotational speed sensor 12'b for detecting the rotational speed of the rear wheel is connected to a second electronic control section 14b, and this second electronic control section 14b is connected to the second module rake 8b and the pressure regulating means 16, respectively. do.

Here, for example, the rear second mask cylinder 4b of the first and second mask cylinders 4as4b will be described in detail.

The second master cylinder 4b is integrally formed with an oil tank 18 and a main cylinder 20, as shown in FIG. A piston 28 is provided which moves back by the urging force of springs 24, 26. Therefore, the hydraulic pressure is generated by the brake operation of the pedal 22, and serves to supply this hydraulic pressure to the hydraulic system such as the second modulator 8b.

Further, as shown in FIGS. 3A to 30, the second modulator 8b defines a diaphragm chamber 30 and a vacuum chamber 32 by a diaphragm 34, and a plunger 36 is fixed to the diaphragm 34. The reciprocating movement of the plunger 36 opens and closes a shunt-off valve 38 that adjusts the inflow of oil from the second mask cylinder 4b. The atmosphere opening 4o that supplies the atmosphere to the diaphragm chamber 30 is opened and closed by a solenoid valve 42 in the second modulator 8b controlled by the second electronic control section 14b. 44 is a hydraulic inlet, 46 is a pressure chamber, 48 is a hydraulic outlet, 5o is a spring contracted in the vacuum chamber 32, 52
is a vacuum opening, and 54 is an orifice provided in the diaphragm 34.

The first modulator 8a and the second modulator 8b are communicated through a communication pipe 56, and a pressure regulating means 16 is interposed in the middle of the communication pipe 56. As shown in FIG. 4, this pressure regulating means 16 includes a solenoid valve 58 that controls opening and closing of the communication pipe 56 by the first and second electronic control sections 14a and 14b, and a piston 6o.
and a pressure regulating chamber 62 having a pressure regulating chamber 62. Further, the diameters of both 61:i of the piston 6o are set based on the ratio of the front and rear locking pressures.

Next, the effect will be explained.

By operating the front and rear brakes, the first
Mask cylinder 4a and rear second mask cylinder 4b
The hydraulic pressure generated is sent to the first and second modulators 8a and 8b, respectively.

The first and second modulators 8a and 8 having the same function
For example, in the rear second modulator 8b, as shown in FIG. 3A, the solenoid valve 42 is normally closed, so the diaphragm chamber 3o is in a contracted state, and the plunger 36 opens the shut-off valve 38 to open the second rear modulator 8b. 2 caliper 10b
Braking pressure is supplied to the At this time, when the braking pressure rises above the set pressure, the plunger 36
moves forward to close the shutoff valve 38.

In addition, in order to lower the braking pressure, as shown in FIG. 3B, the second electronic controller 14b sends a second A braking signal is sent to the modulator 8b and the solenoid valve 42 is opened.
Air is supplied into the diaphragm chamber 3o. As a result, the diaphragm chamber 3o expands against the force of the spring 50 of the diaphragm 34, moves the plan sheet 36, expands the pressure chamber 46, and causes the second caliper 10b to expand.
Note: Decrease the braking pressure delivered to the Furthermore, in order to increase the braking pressure by a certain amount, the solenoid valve 42 is closed by the second electronic control section 14b, as shown in FIG. 3C. As a result, the atmosphere in the diaphragm chamber 30 flows into the vacuum chamber 32 through the orifice 54, and the plunger 36 gradually moves to contract the pressure chamber 46, thereby slightly increasing the braking pressure to the second caliper 10b. It is something. In this way, the brake pressure is adjusted to prevent the wheels from locking.

When the braking pressure exceeds the locking pressure at both the front and rear by the first and second modulators 8a and 8b, the solenoid valve 58 of the pressure regulating means 16 remains closed, and the braking pressure at the front and rear Separate braking takes place at

In addition, when only one of the front and rear braking pressures exceeds the locking pressure, for example, when only one brake is operated, n;
The solenoid valve 5 of the pressure regulating means 16 is activated by the braking signals 4a and 14b.
8 is opened, and the piston 6o is moved by the difference in braking pressure between the front and rear. At this time, this piston 6
0 moves to the side with lower braking pressure according to the ratio of lock pressure,
Distributes and regulates front and rear braking pressure to the optimum state. Here, when front and rear braking is started by the first and second calipers 10a and 10b, the solenoid valve 5 of the pressure regulating means 16 is controlled by the first and second electronic control units 14a and 14b.
Close 8. This achieves effective braking of both the front and rear wheels.

When the braking is finished, for example when the brake operation is interrupted, the solenoid valve 58 of the pressure regulating means 16 is opened by the first and second electronic control units 14a and 14b. To this, Nisu,
the first in the first or second mask cylinder 4a, 4b;
Due to the urging force of the second springs 24 and 26, the caliper 10
, absorbs the hydraulic pressure in the modulator 8, and finally moves the piston 60 in the pressure regulating chamber 62 of the pressure regulating means 16 to a predetermined position to return the hydraulic pressure to a normal state.

Therefore, the braking pressure of both front and rear wheels can be automatically distributed and regulated to the optimum pressure, and the hydraulic pressure can also be automatically returned to the normal state when the brakes are not operated, preventing the wheels from locking and preventing skids. It is possible to prevent this from occurring, achieve effective braking, and shorten the braking distance.

Effects of the Invention As described in detail above, according to the present invention, a communication pipe is provided to communicate the first modulator for the front and the second modulator for the rear, and a pressure regulating means is provided in the middle of the communication pipe. Therefore, the front and rear braking pressure can be automatically distributed and regulated to the optimum condition, achieving effective braking of both front and rear wheels, preventing the wheels from locking and skidding. As a result, the maneuverability and stability of the vehicle can be ensured, and the braking distance can be shortened.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the present invention, FIG. 1 is a system diagram of an anti-skin brake device, FIG. 2 is an enlarged sectional view of the main part of the second rear mask cylinder, and FIGS. 3A and 3B. ,3
Figure C is an enlarged sectional view of the main parts showing the operating state of the modulator.
FIG. 4 is an enlarged sectional view of the main part of the δRd pressure means. In the figure, 2 is an anti-skid brake device, 4 is a mask cylinder, 6 is piping, 8 is a modulator, 10 is a caliper, 12 is a rotation speed sensor, 14 is an electronic control unit,
16 is a pressure regulating means, 56 is a communication pipe, 58 is a solenoid valve, 60 is a piston, and 62 is a pressure regulating chamber. Agent Patent Attorney Yoshimi Saigo ~ Patent Attorney Yukio Harada Figure 4 1st Date” 612 Procedural Amendment (Spontaneous) January 13, 1980 Commissioner of the Patent Office Kazuo Wakasugi 1, Indication of Case 1988 Patent Application No. 224383 2, Title of the invention Anti-skinned brake device 3, Amendment: If Relationship to the case Patent applicant address 300 Takatsuka, Kami Village, Hamana District, Shizuoka Prefecture Name (208
) Suzuki Motor Co., Ltd. Representative Osamu Suzuki 4, Agent Address: 03-438-224
1 (Representative) Address: 3-4-17 Toranomon, Minato-ku, Tokyo
No. 5, Amended Order U.J. Voluntary Action

Claims (1)

[Claims] 1. A mask cylinder that generates hydraulic pressure upon brake operation;
A wheel rotation speed sensor, an electronic control unit that issues a power braking signal based on a detection signal from the rotation speed sensor, a modulator that controls braking pressure in response to this braking signal, and a wheel rotation speed sensor that controls braking pressure based on the pressure from the modulator. In an anti-skinned braking device that includes a caliper that brakes the 1. An anti-skin brake device comprising a solenoid valve whose opening and closing are controlled by an electronic control unit and a pressure regulating chamber having a piston. 2. The anti-skin braking device according to claim 1, wherein the piston is a piston whose diameters at both ends are set depending on the ratio of front and rear locking pressures.