Target device for inductive displacement measurement of the main piston

A technology for target equipment and displacement measurement, which is used in electrical/magnetic position measurement, mechanical equipment, measuring devices, etc., and can solve problems such as inability to center aluminum targets.

Inactive Publication Date: 2017-07-14
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also does not allow optimal centering of aluminum target bodies by means of extruded ribs

Method used

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  • Target device for inductive displacement measurement of the main piston
  • Target device for inductive displacement measurement of the main piston
  • Target device for inductive displacement measurement of the main piston

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] exist figure 1 shows a target device 1 which is applied to a piston body 4 . The piston body 4 is located in a master cylinder 10 with an inner wall 16 . The master cylinder 10 has a primary pressure chamber 13 and a secondary pressure chamber 14 . The piston body 4 is driven via an actuator 24 . For sealing, a first axial sealing ring 9 and a second axial sealing ring 11 are provided, the first axial sealing ring 9 sealing in the primary pressure chamber and the second axial sealing ring 11 in the secondary pressure chamber Sealing is performed in a state moving to the right according to the figure. The target device 1 is designed such that it can likewise be introduced into the secondary pressure chamber 14 . The target device 1 has a first end 6 and a second end 7 , wherein the first end 6 here forms a stop 8 for a first axial sealing ring 9 . The position of the piston body 4 or of the target device is recorded via the induction coil 15 .

[0029] exist figu...

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PUM

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Abstract

The invention relates to a target device (1) for the inductive displacement measurement of a main piston (2), wherein the target device (1) has a sleeve-shaped design with a cutout (3) and is made of a metallic material, and Designed to be fixed to the piston body (2) under tension. With the aid of the object device proposed here, a very short construction of the active cylinder system can be realized and at the same time mass production can be achieved without additional adjustment effort.

Description

technical field [0001] The invention relates to a target device for inductive displacement measurement of a master piston, as well as a master piston and a hydraulic master cylinder. Background technique [0002] In the previous state of the art, solid aluminum target bodies were used which enable the inductive displacement measurement of the master cylinder. A disadvantage of such aluminum target bodies is that they are particularly space-intensive in the axial direction, since such aluminum target bodies can only be arranged above the primary pressure chamber of the master cylinder. A master cylinder with a secondary pressure chamber and a primary pressure chamber has different diameters in the two pressure chambers. An aluminum target is used to seal the gap so that it can only move in the secondary pressure chamber with a smaller diameter. In such an arrangement, the master cylinder is very long. In addition, suitable fastening devices are required in order to produce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/28
CPCB60K17/02F15B15/1447F15B15/2815F15B15/2892F16D25/088F16D2025/081F16D2300/18G01B7/003G01B7/02F16D25/08
Inventor 约亨·布洛胡特
Owner SCHAEFFLER TECH AG & CO KG
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