JPS63144353U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a first embodiment of a pressure limiting device according to the present invention, and FIG. 2 is a longitudinal sectional view of a second embodiment of the pressure limiting device according to the present invention. 10,110...pressure limiting device, 12,112
...Body, 14,44,114,144...Stepped hole, 20,46,120,146...Shoulder, 22
...Cylindrical element, 24, 40, 124, 140...
...Entrance orifice, 26...Room, 28, 42, 1
28,142...Exit orifice, 32,132
...First valve, 34, 49, 134, 149... Valve member, 36... Stem, 38... Force transmission mechanism, 4
8,148...Second valve, 56,164...Plug, 60,160,166...Spring, 162...Piston.

Claims (1)

[Claims for Utility Model Registration] 1. A main body having a first stepped hole therein and having first and second inlet and outlet orifices, the first inlet orifice, the first outlet orifice, and the first stage. a first passage communicating between the first stepped hole; a second passage communicating between the second inlet orifice, the second outlet orifice, and the first stepped hole; and a second passage communicating with the first stepped hole; a second passage forming a portion of the second passage;
a cylindrical element with a stepped hole therein and a cylindrical element fitted within the first stepped hole and responsive to a control force transmitted from an external force transmission mechanism and a pressure delivered to the first inlet orifice; a first valve having a valve member that is moved by the body and cooperates with a first valve seat formed in the body to control communication through the first passageway; coaxially fitted into the second stepped hole and cooperating with a second valve seat formed on the cylindrical element substantially parallel to the first valve seat to control communication through the second passage; a second valve having a valve member, the axial position of the cylindrical element within the first stepped bore varying the axial distance between the first valve seat and the second valve seat; A pressure limiting device for a dual brake circuit, characterized in that it is adjustable to 2. The first valve seat is formed on the shoulder of the first stepped hole of the main body, and the second valve seat is formed on the shoulder of the second stepped hole of the cylindrical element. A pressure limiting device according to claim 1 of the utility model registration claim. 3 The valve member of the first valve is disposed within a chamber defined between the first valve seat and the opposing surface of the cylindrical element, and the valve member of the second valve is disposed within the second stepped hole. the second valve has an axial stem fixed to the valve member, the second valve having an axial stem fixed to the valve member, the second valve having an axial stem fixed to the valve member; 3. Pressure limiting device according to claim 2, characterized in that it extends through a columnar element and projects into said chamber and cooperates directly with said first valve. 4. The pressure limiting device according to claim 2 or 3, wherein the cylindrical element is a sleeve screwed into the first stepped hole. 5. An axially adjustable plug is located in the first part of said body.
closing a stepped hole, the cylindrical element comprising a piston movable within the first stepped hole, the piston being supported on a shoulder of the first stepped hole; 3. The pressure limiting device according to claim 2 or 3, wherein the pressure limiting device is pressed by the plug. 6. Any one of claims 1 to 5 of the claims registered as a utility model, characterized in that the force transmission mechanism transmits a control force that changes depending on the load on the axle of the vehicle to the first valve. Pressure limiting device as described in .