DE3225974A1 - GAS SPRING - Google Patents

Description

Daimler-Benz Aktxerlgesells chaf tr - Since in the 14th

Stuttgart-Untertürkheim

.3 ·

"Gas spring"

The invention relates to a gas spring, in particular for engine hoods and / or trunk lids of motor vehicles, which consists of a cylinder filled with pressurized gas and a cylinder that can be displaced in it, with a Piston rod connected piston consists.

Such gas springs are often used to support the opening movement z. B. used a hood of a motor vehicle. Your extension length is dimensioned so that normal maintenance work in the engine compartment permitting opening angle of the hood of z. B. about k ^ is reached. With various types of vehicle, however, there is also the requirement that an opening angle of 9 ° must be achieved, for example during final assembly of the vehicle or later when the internal combustion engine is replaced. To this end, it was previously necessary to loosen at least one of the fastening points of the gas spring.

- ■ - "-" ■ '¥ -' - '■ - Dairn 1 k 5' »5/4

■ If.

The present invention had the object of providing a To develop gas springs of the type described above so that that such an opening angle is also possible without loosening the gas spring linkage.

This object is achieved in that on the cylinder is fitted with a jacket tube which is telescopically displaceable on one side and which is open on one side.

Advantageous embodiments of the invention can be found in the further patent claims.

The object of the invention is to be based on a below in the drawing schematically illustrated embodiment will be explained in more detail.

In the drawing show:

Fig. 1 is a longitudinal section through a gas spring according to the invention in a pushed together

Position,

FIG. 2 shows a section corresponding to FIG. 1 with the gas spring fully extended,

Fig. 3 shows the arrangement of such a gas spring a hood of a motor vehicle

an opening angle of about 45, and

FIG. 4 shows the arrangement according to FIG. 3 at an opening angle of 90.

Daiin Ik

The gas spring 1 shown in the drawing has a cylinder 2 in which a piston k connected to a piston rod 3 is displaceably arranged. A jacket tube 5 is pushed onto the cylinder 2 and has a fastening eye 6 on the end face. An elastic buffer 7 is provided at the end between the cylinder 2 and the jacket tube 5.

The jacket tube can be secured in a manner not shown to prevent it from being pulled off completely from the cylinder.

In FIGS. 3 and k of the drawing, an engine hood 8 of a motor vehicle (not shown in more detail) is shown schematically, which is articulated to a part 11 fixed to the vehicle by means of levers 9t 10. The gas spring 1, which allows the engine hood 8 to be opened up to the 90 position shown in FIG. 4, is also hinged to the engine hood 8 and the part 11 fixed to the vehicle.

Claims (2)

Daimler-Benz AkLi o.ngesο 11 rchai't - "As im lh Stuttgart-UnUrtürkheim Expectations I1.) /, Is the gas spring in particular for engine bonnets and / or suitcase ^ ~ ^^ lid of motor vehicles, which and a movable from a container filled with pressurized gas cylinder therein with a piston rod connected to the piston, characterized geken η ζ calibration η β t, that a jacket tube (5) which is open on one side and is telescopically displaceable with respect to the cylinder (2) is placed on it. 2.) Gas spring according to claim 1, characterized records that the cylinder (2) and the jacket tube (5) have approximately the same length and that the Jacket pipe (5) on the outer wall of the cylinder (2) is led. 3) Gas spring according to claim 1, characterized in that that between the cylinder (2) and jacket tube (5) an elastic buffer (7) is arranged at the end is. Daim 1 ^ 5 ^ 5 A h.) Gas spring according to one or more of the preceding claims, characterized in that the casing tube (5) has a fastening eye (6) or the like on the front side.