JPS6342466U - - Google Patents

Description

[Brief explanation of drawings]

1 to 4 are diagrams showing an embodiment of the brake fluid pressure control device according to the present invention, FIG. 1a is a partially sectional front view thereof, FIG. 1b is a partially sectional side view thereof,
Figure 2 is a cross-sectional view of the main parts explaining its action, Figure 3 is a graph explaining its action, Figure 4 is a conceptual diagram of a brake hydraulic system using it, and Figures 5 to 7 are conventional brakes. FIG. 5 is a conceptual diagram of a brake hydraulic pressure system using the hydraulic pressure control device, FIG. 6 is a partially sectional front view thereof, and FIG. 7 is a graph explaining its operation. 1... Brake fluid pressure control device, 2A, 3B...
Hydraulic pressure control valve, 4A, 4B... Piping showing the brake system, 5A _a , 5A _b ... Port, 6... Liquid passage, 7... First transmission member, 8A... First valve body, 8B
...Second valve body, 9...Poppet valve body, 10A...
First point of action, 10B... Second point of action, 11... First force point portion, 12... Locking member, 13... Second transmission member, 14... Pressing member, 15... Elastic sealing member, 16 ...Locking member, 18...Spring (elastic member), PM...Hydraulic pressure on master cylinder side, P
R...Fluid pressure on the rear wheel cylinder side, PS ₀ ,
PS ₁ ...Split point.

Claims (1)

[Scope of utility model registration request] The hydraulic pressure from the master cylinder is reduced to a valve housing installed on the spring of the vehicle body, and to each wheel cylinder on the rear wheel side, which is housed almost parallel within the valve housing and corresponds to two independent brake hydraulic pressure systems. It has two hydraulic pressure control valves that control and apply, two application point sections that respectively abut the valve bodies housed in each hydraulic pressure control valve, and one force point section approximately in the center of these application point sections. a first transmission member, an application point portion located in the center that rotates around a fulcrum portion located at one end portion that is locked to the valve housing, and acts on a force point portion of the first transmission member; and another end portion; a second transmission member having a force point portion located at the spring portion of the vehicle body; and an elastic member having one end attached to the force point portion of the second transmission member and one end attached to the force point portion of the second transfer member, the elastic member having one end attached to the force point portion of the second transfer member. a direction in which the lower relative displacement is converted into elastic force of the elastic member, the elastic force is transmitted to each of the valve bodies via the second transmission member and the first transmission member, and the liquid passage of the hydraulic pressure control valve is opened; In the brake fluid pressure control valve, the first transmitting member and the second transmitting member A locking member is provided to be interposed between the first transmission member and the locking member, and when the hydraulic pressures of both systems are normal, there is a predetermined gap between the first transmission member and the locking member, and the hydraulic pressure of one system is In case of failure, the first
The transmission member rotates around the force point, and the end of the first transmission member corresponding to the valve body with normal hydraulic pressure is displaced so as to come into contact with the locking member, and the hydraulic pressure in one system is lost. A brake fluid pressure control device characterized in that the operation start point of the valve element whose hydraulic pressure is normal at the time of failure is higher than the operation start point of each valve element when the hydraulic pressure of both systems is normal.