Piston and fluidically actuated positioning device comprising the same

A technology of adjusting device and piston, applied in the direction of fluid pressure actuating device, etc., can solve the problem of high processing cost and other problems, and achieve the effect of reducing storage cost, simple realization, and improving availability

Active Publication Date: 2008-03-26
FESTO AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However this results in very high processing costs, which are only worth it at high volumes

Method used

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  • Piston and fluidically actuated positioning device comprising the same
  • Piston and fluidically actuated positioning device comprising the same
  • Piston and fluidically actuated positioning device comprising the same

Examples

Experimental program
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Embodiment Construction

[0025] FIG. 1 shows overall a fluid-operated adjustment device 1 as an embodiment of a fluid-operable linear drive. The adjusting device 1 comprises a housing 2 which defines a rectilinear receiving chamber 3 , which preferably has a circular cross section, in which a piston 4 with a corresponding circular outer contour is arranged linearly movable to and fro. The piston longitudinal axis 5 extends in the direction of movement of the piston 4 and coincides with the longitudinal axis of the receiving chamber 3 .

[0026] The receiving chamber 3 is closed on both end faces by a closing wall 6 a , 6 b of the housing 2 . The peripheral boundary of the receiving chamber 3 is assumed by a one-piece or multi-piece tubular body 7 extending between the two closed walls 6a, 6b, the inner surface of which defines a cylindrical piston working surface 8, the piston 4 slides along this working surface 8 during its linear motion. The closure walls 6a, 6b are expediently designed as housing...

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PUM

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Abstract

The present invention presents a piston of the adjusting device which can be run using the fluid. The piston includes a supporting body (22) which is provided with an annular groove that is coaxial to the longitudinal axis of the piston, and at least one annular permanent magnet device (27) is arranged in the groove. The permanent magnet device (27) is divided in the circumference direction (37) and is composed of at least two arc shaped magnet subsections (38 and 39). The annular groove is constructed to be an annular groove (23) which is provided with a rabbet that is oriented to the external side of the radial direction, and the magnet subsections (38 and 39) are loaded in the annular groove at the condition of forming the annular molding.

Description

technical field [0001] The invention relates to a piston of a fluid-operable adjusting device, in particular a piston of a linear drive or damping device, having a support body with an annular groove coaxial with the longitudinal axis of the piston, in which groove At least one annular permanent magnet arrangement is arranged in it. Furthermore, the invention relates to a fluid-operated adjustment device equipped with such a permanent magnet arrangement. Background technique [0002] An article of the above-mentioned type is described, for example, in DE 3404095 C2. This is a linear drive in the form of a hydraulically actuatable cylinder having a piston fastened to a piston rod for transmission of the drive force. For the contactless detection of the piston position, the piston carries a permanent magnet arrangement in the form of an annular permanent magnet, which can cooperate with a position detection mechanism arranged on the outside on the housing. The permanent mag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/28
CPCF15B15/2861
Inventor M·劳W·拉姆勒
Owner FESTO AG & CO KG
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