Position Detecting Sensor

• US 20080022789A1
• Filed: 07/24/2007
• Published: 01/31/2008
• Est. Priority Date: 07/28/2006
• Status: Active Grant

• Current Assignee: SMC Kabushiki Kaisha
• Original Assignee: SMC Kabushiki Kaisha
• Inventors: Ozaki, Norimasa, Kobayashi, Katsumi, Okuno, Haruhiko, Uchimido, Gen
• Granted Patent: US 7,830,137 B2
• Time in Patent Office: Days
• US Class Current: 73/866.5
• CPC Class Codes: F15B 15/2892 characterised by the attachment means

Abstract

A position detecting sensor is equipped with a holder capable of accommodating a sensor member therein on which a magnetic sensor is disposed. A connector formed on an end of the holder is connected to a fitting through a connecting bolt. The fitting is disposed by insertion into a sensor groove of a cylinder apparatus, and after insertion of the fitting into the sensor groove, the holder and the fitting are fastened by the connecting bolt, thereby fixing the holder with respect to the cylinder apparatus.

Claims

1. A position detecting sensor installed in a groove provided on a side surface of an actuator, for detecting the position of a displacement body in said actuator, comprising:

a holder accommodating a detector therein for detecting said displacement body and disposed on said side surface so as to face said groove;

a fitting formed of a metal material, for insertion into said groove; and

a connecting member connecting said holder and said fitting,

wherein said holder and said fitting are pulled mutually in a direction to approach each other by said connecting member, and a portion of said actuator is maintained between said holder and said fitting.

2. The position detecting sensor according to claim 1, wherein said holder includes a connector for connecting said fitting via said connecting member, and an engagement member that engages with said fitting, said holder being positioned with respect to said fitting by an engaging action of said engagement member.

3. The position detecting sensor according to claim 2, wherein said connecting member is inserted in said connector and is screw-engaged with respect to said fitting.

4. The position detecting sensor according to claim 2, wherein a projection, which projects toward said actuator and is inserted into said groove, is disposed on said holder.

5. The position detecting sensor according to claim 1, wherein a fixing member capable of fixing said fitting with respect to said groove is provided on said fitting.

6. The position detecting sensor according to claim 5, wherein said fixing member comprises a fixing screw, which is screw-engaged in a screw hole that penetrates in a direction perpendicular to an axial line of said fitting.

7. The position detecting sensor according to claim 6, wherein, by displacement of said fixing screw toward said groove and abutment against a bottom portion thereof, said fitting with which said fixing screw is screw-engaged is displaced toward said holder.

8. The position detecting sensor according to claim 5, wherein said fitting has a predetermined length in the axial direction, and is formed from a shaft having a circular cross sectional shape corresponding to a cross sectional shape of said groove.

9. The position detecting sensor according to claim 8, wherein a length along an axial direction of said fitting is longer than a length along an axial direction of said holder, and wherein said fixing member is disposed in a region that projects with respect to an end of said holder.

10. The position detecting sensor according to claim 8, wherein a length along an axial direction of said fitting is shorter than a length along an axial direction of said holder.

11. The position detecting sensor according to claim 8, wherein a length along an axial direction of said fitting is equal to a length along an axial direction of said holder.