DE19837355A1 - Method for fixture of pipe conduit in cylinder, particularly in toothed rod hydraulic linkage, involves fitting bush on pipe conduit so that locked engagement takes place - Google Patents

Abstract

A spring ring (3) is fitted on the bush (2). A form ring (4), which can compensate a clearance of approximately 0.5 mm, is fitted onto the pipe conduit (1). The pipe conduit is fed into a housing provided with a groove (6), so that when the final position of the spring ring (3) is reached it snap-engages into the housing groove.

Description

The present invention relates to a method for Fastening a pipe in a housing and esp especially for fastening a pipe for rack and pinion Hydraulic steering in a cylinder.

With rack and pinion hydraulic steering, the control valve and the working cylinder connected via pipes. The Most rack and pinion hydraulic steering systems have four so-called Pipe connections to the hydraulic lines on the len mounting housing.

These pipe connections are subject to operation high pressures and high pressure fluctuations; they have to but be as free as possible and under constant action voltage.

Usually nowadays with rack and pinion Hydraulic steering the internal pipe connections turned on screwed or inserted and with hold-downs or clips secured.

Due to the required manual assembly and the cumbersome The current solutions result in high handling Costs. In addition, assembly is very time consuming.

The present invention is therefore based on the object based on specifying a method which enables assemble and close the pipes with little effort fasten. This should - even with existing ones  Manufacturing and assembly facilities - an automatic Assembly may be possible.

In addition, the pipe connection should be under constant bias.

This object is according to the invention by the Merk male of claim 1 solved. Other configurations the invention emerge from the subclaims.

Accordingly, it is proposed to the Rohrlei to compress a socket and then with to provide a snap ring. Furthermore, the Pipeline threaded a form ring that has about 0.5 mm play can compensate and for the required bias worries. The pipe provided with the bushing and the form ring Cable is inserted into the housing until the snap ring snaps into a housing groove, creating the connection is axially secured.

To create a connection between the pipe To be able to disassemble the cable and housing are on the housing die-cast longitudinal grooves provided.

The invention is in the following with reference to the accompanying Drawing explained in more detail, the one according to the Invention Pipe attached method according to the method.

According to the single figure, a socket 2 is compressed on the pipe 1 and positively connected to it. Then, according to the invention, a snap ring 3 is mounted on the socket 2 . In order to ensure the required pre-tensioning of the pipeline connection, a form ring 4 is threaded onto the pipeline, which can compensate for a play of approx. 0.5 mm.

The shaped ring 4 is an elastically deformable ring which can have various cross-sectional shapes with which a prestress in the axial direction can be exerted on the snap ring 3 and thus on the pipeline 1 . As a result, the pipeline 1 is held securely on a cylinder 8 . Of the cylinder 8 , only one connecting piece is shown.

The free end 5 of the pipeline 1 is guided in a drilling of the cylinder 8 .

When assembling, the pipeline 1 is guided through the book 2 and the free end 5 of the pipeline 1 before the molded ring touches the insertion slope. This prevents damage to the molded ring 4 .

When the final position is reached, the snap ring 3 snaps into a housing groove 6 provided for this purpose on the cylinder 8 and axially secures the pipeline 1 .

If necessary, the connection can be dismantled via die casting longitudinal grooves 7 .

Reference list

1

Pipeline

2nd

Rifle

3rd

Snap ring

4th

Shaped ring

5

free end of "

1

"

6

Housing groove

7

Longitudinal grooves

8th

cylinder

Claims (2)

1. A method for fastening a pipe ( 1 ) in a cylinder, in particular a pipe for rack-and-pinion hydraulic steering, with the following steps:

• - Upset a socket ( 2 ) on the pipe ( 1 ) so that a positive connection is created;
• - Mounting a snap ring ( 3 ) on the socket ( 2 );
• - Threading a form ring ( 4 ), which can compensate for a play of about 0.5 mm on the pipeline ( 1 ) and
• - insertion of the pipe (1) in a with a Gehäu Senut (6) provided with the housing so that the snap ring (3) snaps into when reaching the final position in the housing groove provided there for (6).

2. The method according to claim 1, characterized in that a dismantling of the Rohrleitungsan circuit by means of die-cast longitudinal grooves ( 7 ) is provided.