JPS59130776A - Master cylinder for fluid pressure device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid pressure device such as a vehicle brake device.
With regard to the master cylinder, in more detail, the pressure cylinder and the It relates to a mask sill comprising a reservoir communicating with the interior of the pressure sill through a transverse opening 7 passing through the peripheral wall of the can ring.

To ensure safety, test the integrity of newly assembled mask cylinders by applying high pressure inside the cylinder and checking for unacceptable leaks. This can occur, for example, when components such as damaged pistons or seals are assembled incorrectly and cause a crack.The high-pressure fluid in the first such test is usually applied through an elongated hollow probe. The probe is inserted into the reservoir and positioned so as to communicate with an internal boat of the reservoir, which is in communication with the interior of the cylinder. It is difficult to position them correctly to connect them in this state.

In particular, the lateral boats of the cylinder are spaced longitudinally of the cylinder with respect to the reservoir 7ζ and provide flow channels extending laterally of the reservoir and communicating between the interior of the reservoir and the boats of the cylinder. This is difficult if you have to set one up. This kind of configuration is British! Permitted application No. 2082277
Examples are given in No. The operation of trying to position at a satisfactory angle the T part of the restriction due to the internal components of the reservoir and the first part of the probe connection is quite difficult.

The purpose of the present invention is to obtain a high pressure test probe y IJ server [
It is an object of the present invention to provide a mask cylinder that is easy to apply to a vine port.

According to the invention, there is provided a mask-and-ring for a fluid pressure device comprising a pressure cylinder and a reservoir initially provided as separate from the pressure cylinder and mounted on the pressure cylinder. The interior of the pressure cylinder and the interior of the reservoir are in communication by a connector, the connector providing a flow path between the interior of the reservoir and a lateral boat extending through the circumferential wall of the pressure cylinder. and the connector allows the test probe to be applied within a reasonably wide angular range without compromising the substantially fluid-tight restraint between the test probe and the mask. Please provide a cylinder.

The connector typically has a conical or part-spherical seat, and the section is engageable with the end of the probe, which is preferably shaped to correspond to the section.

The connector has one socket for receiving the probe (
- Preferably, the locus should be located within Nokesoto.

According to an embodiment of the invention, the first and second parts of the connector are arranged substantially at right angles to each other,
a part (extending into the workpiece cylinder ζ and carrying the seat; the second part extends in the axial direction of the pressure ring and communicates with the lateral boat of the pressure cylinder σ); (extends substantially in the longitudinal direction of the pressure cylinder to connect with the filter flow path).

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The figure shows a tandem type mask cylinder used in a dual circuit brake system. The mask shilling is 1η11
The open end of the blind hole 2 is in the shape of a sleeve, and the blind hole 2 has a pressure cylinder 1.
! The department has been closed by Soro. The blind hole 2 is divided into a pressure chamber 5 and a pressure chamber 6 by a piston 4)
. Viston 4 (・5υ due to variable length device 7)
The actuating rod 9 extending from the axially outward C of the piston 8G is removed.A spring 10 inserts the pistons 4 and 8 and limits them by means of a predetermined device 7. A reservoir 11 is mounted on the upper side of the cylinder 1, and the reservoir 11 is formed by passing through the cylinder wall laterally. It communicates with pressure chambers 5 and 6 via boats 12 and 2, respectively.

Communication between the reservoir 1'1 and the bottom of the boat 1 is made possible by a closure member 3 (() formed with one axial passage 14 (C). 13. The channel 14 forms part of an axial extension 16 of the closed shaft. The connector 18 is inserted into the extension part 17 and is housed in an opening in the base of the connector 110 and is secured on one side. The clip 21 is held in place by an elastic clip 21 made of, for example, spring steel. As shown in FIG. The arms 21A, 21B of the clip 21 + snap-fit elastically into the rear surface of the Epos sound screw 22.The extension 16 of the closing member (extends through the E-Flip 21 and connects the connector 18 to the above-mentioned 1 to 5). contained within.

The hole 17 is located within the reservoir and communicates with the enlarged opening 19 of the single connector 18 via the flow path 18A. The joint between the flow path 18A and the opening 19 is connected to the newly assembled Musk Schilling pressure chamber 6 with a high pressure test probe (
It has the shape of a conical seat 20 designed to be able to be used for heating (indicated by the broken line P). High-pressure test probe tests the integrity of conventional piston and 7-wheel elements.7. )
Apply it once. By making the seat 20 conical, the test probe can approach the connector 18 over a relatively wide and angular range, making it easier to apply.

The normal operation of the single master shilling described above will be easily understood by those skilled in the art, so the details will be omitted.

Before Musk Schilling is approved for application to a vehicle brake system, the pressure in the pressure chamber B is tested using the 1 to 5 VC probe Pg described above.

The test pressure acts on the inner end of the piston 8, and the force exerted on the piston is counteracted by a circlip 8AK provided in a groove in the cylinder wall. The test pressure also acts on a relatively wide area of the closure member B defined by the annular portion of the nozzle surrounding the actuating rod 9. It is important that the large forces occurring on the closure member 3 do not act on thin and weak structures such as the casing 24 of the cooperating booster. If a large force were applied to such a thin and weak structure, it would be damaged. Such reaction means are achieved by using a coupling device in the form of a U-shaped spring clip 2 (see FIG. 2). 2 8 fX: Extends through and engages with the annular shape 29 formed on the outer peripheral surface of the sill 1. The inner end 27A of the arm 27 is wider than the other parts. Be made wider.t
Sixth, arm 27 can extend into and engage a substantial portion of the arcuate extension of groove 29.

In this way, the closing member 3 is connected to the cylinder 1 (/).
・(It is keyed, and even if any axial force, such as that generated during the high pressure test mentioned above, acts on the closing member B, that force will directly react to the Schilling IK,
For example, no force is applied to the casing 24 of the booster. The coupling device (clip 26) is located in this embodiment within the casing 24 of the booster and is held in place by the casing 24. However, if the closure member is to be disassembled each time the interior of the cylinder 1 is accessed when necessary, the clip 26 can be removed fairly easily.

[Brief explanation of the drawing]

N]: Figure 1 is a longitudinal sectional view of an embodiment of a filter master/ring according to the present invention. In Figure 2, the right half is a sectional view taken along line AA in Figure 1, and the left half is 8r! BB sectional view of FIG. 1. FIG. 4 is a Y-line sectional view and an X-line sectional view of FIG. 2, respectively. 1-・Pressure sill filter・End closure cap (closing member) 11 Reservoir 13 ・Transverse boat 14
・Flow path 16 ・Extension part 16A...Seal 18 Connector 20・Seat 2
1...Elastic clip 22...Boss part P
Test probe patent applicant Lucas Industries Public Limited Company (4 others) Engraving of drawings (no changes to the content) Procedures Amendments Showa Display of the case 1999 Patent Application No. 23rf?7 No. 2 Name of the invention superimposed/'L≠Saz I sword 7 Futare ll> Type 6 Person making the amendment IRJ related to the case Applicant address 2 S. ), Rou≠2 I〉Las 1-11-Mata 8. Funo, ssugote, to 7'7'y t＼°knee 4th generation
Rin 4971

Claims (1)

[Scope of Claims] (1) A mask cylinder for a fluid pressure device that includes a pressure cylinder and a reservoir that is initially provided separately from the pressure cylinder and is mounted on the pressure cylinder. The interior of the pressure cylinder and the interior of the reservoir are communicated by a connector, which provides a flow path 2 between the interior of the nuclear reservoir and a transverse boat passing through the peripheral wall of the pressure cylinder. and the connector is adapted to allow application of the test probe within a certain range of angles without compromising the substantially fluid-tight seal between the test probe and the test probe. This mask cylinder is characterized by: (2) The mask cylinder according to claim 1, wherein the connector provides a seat that can be engaged with the end of the test probe. (3) The seat is conical. Claim 1 or 1 is a mask cylinder according to claim 2, characterized in that the shape is partially spherical. (4) The connector is configured to receive the test probe. The mask cylinder according to claim 2 or 3, wherein the mask cylinder has a socket for the connector, and the seat is located within the socket. (5) The connector is comprising first and second portions, the first and second portions being arranged at an angle to each other, the first portion extending into the reservoir;
providing a seat that can be engaged with the end of the test probe;
The second portion is in communication with the lateral ports of the pressure sill spaced along the length of the pressure sill with respect to the reservoir in the axial direction of the pressure cylinder. 2. The mask cylinder according to claim 1, wherein the mask cylinder extends substantially in the longitudinal direction of the pressure sill to connect with the extending flow path. (6) The mask cylinder according to claim 5, wherein the first and second portions are arranged at right angles to each other. (7) The connector is a separate element housed and sealed within the opening of the reservoir C. Mask'n Ring as described in . (8) the second portion of the connector connects with an axial extension of the end closure cap of the pressure sill;
8. The master cylinder according to claim 5, wherein the extension part is hollow and defines the flow path. (9) said extension portion is surrounded by a seal;
the connector is held in place by a resilient clip, the extension extending through the connector, and the clip snap-fitting around a boss formed on the connector. The mask cylinder according to claim 8, characterized in that: