Fluid pressure equipment with position indicating mechanism
AssigneeSMC Corporation
InventorsAkira Enzaki, Yoichi Morodomi
Life of this patent
Estimating the term…
Abstract
A magnet is attached to a piston which slides in the interior of a casing due to action of fluid pressure, a guide groove is provided on a side face of the casing in a movement direction of the piston, an indicator is received in the guide groove, and at least one portion of the indicator is formed of a magnetic body, so that the indicator can displace following the piston.
Claims12
A fluid pressure equipment with a position indicating mechanism, comprising a piston which slides in the interior of a casing due to action of fluid pressure to drive a load, and an indicator which displaces following the piston due to action of a magnetic attracting force, wherein the indicator is provided on the casing so as to be visible from the outside.
A fluid pressure equipment with a position indicating mechanism, comprising:
- a piston which slides in the interior of a casing due to action of fluid pressure to drive a load;
- a guide groove which has a sectional shape in which the width of a groove interior of the groove is wider than that of a groove opening portion thereof and which is formed on an outer face of the casing along a movement direction of the piston;
- an indicator which is formed in a short column shape having a diameter larger than the width of the groove opening portion of the guide groove and which is received in the groove interior to be movable and visible from the outside through the groove opening portion;
- and a magnet and a magnetic body which are provided on at least one portion of the indicator and the piston so as to attract each other mutually.
A fluid pressure equipment with a position indicating mechanism, comprising a valve mechanism portion having a plurality of main ports, flow paths connecting the main ports and a valve member which switches communication states of the flow paths;
- a cylinder portion having a piston which is slidable in a cylinder hole, pressure chambers which are formed on both sides of the piston, a plurality of operation ports which communicate with the pressure chambers, and a rod which couples the piston and a valve member to each other;
- and a position indicating mechanism which indicates the operation position of the piston, wherein
- the position indicating mechanism has a guide groove formed at a position close to the piston on an outer face of a casing, an indicator which is received in the guide groove so as to be movable and visible from the outside, and a magnet and a magnetic body which are provided on at least one portion of the indicator and the piston so as to attract each other mutually.
Dependencies are inferred from the claim text.