DE7930294U1 - Pipe part for the production of a piston rod for vehicle shock absorbers - Google Patents

Description

The innovation concerns a tubular part as a piston rod for vehicle shock absorbers. As is known, piston rods for motor vehicles made from solid material.

The main disadvantage of this method of manufacture is its weight. However, the automotive industry tries to save weight wherever possible.

It is the task of the innovation to create a pipe part that, in addition to lightening the weight, also reduces the weight the inertia forces and an improvement in the vibration behavior.

To solve this problem, a tubular part as described in claim 1 is proposed.

Advantageous refinements result from the features of the subclaims.

The advantages of producing piston rods for shock absorbers from tubular parts are essentially that The lightweight construction saves drive energy. The course of the wall thickness can be adapted to the mechanical stress. The more demanding construction Made of tube is characterized by a more favorable fiber orientation compared to the solid material version. The lifetime of the Chassis is also due to the reduction of the inertia forces and the improvement of the vibration behavior elevated.

Various pipe part designs are shown schematically in the accompanying drawings.

Show it:

FIG. 1 shows a longitudinal section through a tube part which is flattened or drawn in at the ends one-sided wall tapering in the non-retracted or non-flattened part,

FIG. 2 shows a longitudinal section through a tube part which is flattened or drawn in at the ends Wall tapering on both sides in the non-retracted or non-flattened part.

As can be seen from the drawings, the pipe (l) is in Figure 1 evenly tapers conically. In this illustration, the ends meet the requirements in a known manner flattened or indented accordingly.

The interior (2) of the pipe can either be foamed with plastic or filled with light metal,

In Figure 2, a double-sided tapering of the interior (2) is shown towards the center, here too Ends for assembly are designed accordingly.

The production of these pipes with different wall diameters takes place with the help of known procedures.

Claims (5)

PATENTANWALTS BÜ RO BERLIN - MUNICH PATENTANWÄLTE DIPL-ING. W. MEISSNER DIPL-ING. P. E MEISSNER DIPL-ING. H.-J. PRESTING Authorized Representatives before the European Patent Office - Professional Representatives before the European Patent Office Your reference Your letter of Our reference MJr / Ma 217 HERBERTSTR. 22, 1000 BERLIN 33 3/13/80 Mannesmann Aktiengesellschaft Mannesmannufer 2 4000 Düsseldorf 1 pipe part as piston rod for vehicle shock absorbers protection claims 1. Pipe part as a piston rod for vehicle shock absorbers, characterized in that there are different inner and outside diameter as well as the same or different wall thicknesses. 2. Pipe part according to claim 1, characterized in that the interior is filled with foam. 3. Pipe part according to claim 1, characterized in that the interior is filled with light metal. 4. Pipe part according to claim 1, characterized in that • Branch (§ 28 PaO) TELEX: Munich: 1-856 44 ST. ANNASTR. 11 | _nven d 8000 MONKS 22 TPi naamuiu TELEGRAM: PHONE: BERi_iN , 080/8?) BANK ACCOUNT: BERLINER BANK AQ. BERLIN 31 3895716000 POSTAL CHECK ACCOUNT: W. MEISSNER, BLN-W 122 82 -109 that the wall thickness transition is conical in sections. 5. Pipe part according to claim 1, characterized in that the inner diameter decreases or increases conically.