Cylinder Control Unit

• US 20090001967A1
• Filed: 05/30/2006
• Published: 01/01/2009
• Est. Priority Date: 06/21/2005
• Status: Abandoned Application

• Current Assignee: Asa Electronics Industry Co., Ltd. (VOXX International Corporation)
• Original Assignee: Asa Electronics Industry Co., Ltd. (VOXX International Corporation)
• Inventors: Asa, Yukihiro
• Application Number:
  US11/908,489
• Publication Number:
  US 20090001967A1
• Time in Patent Office: Days
• US Class Current: 324/207.200
• CPC Class Codes: F15B 15/2861 using magnetic means
• CPC Class Codes: G01D 11/30 Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
• CPC Class Codes: G01D 5/145 influenced by the relative movement between the Hall device and magnetic fields see G01R33/06

Abstract

[Problem to be Solved] To specify motion range of piston 110 in air cylinder 100 with high accuracy.
[Means for Solving The Problem] Position detecting devices 1a and 1b respectively comprise

• • Hall IC switching on/off of output of electrical signal depending on relative position to magnet 140 placed so that moving direction of piston 110 crosses at right angle to the boundary of magnetic poles and
  • resin covering said Hall IC while positioning it inside,
  • Hall IC of the first position detecting device switches on/off of the output by magnetic force from a first magnetic pole and
  • Hall IC of the second position detecting device switches on/off of the output by magnetic force from a second magnetic pole.
    The position detecting device 1b is mounted on the north pole side of the magnet 140 and the position detecting device 1a is mounted on the north pole side of the magnet 140.

Claims

1. A cylinder control unit, mountable on a cylinder, provided with a first and a second position detecting devices for specifying motion range of a piston in said cylinder wherein the first and the second position detecting devices respectively comprise

Hall IC switching on/off of output of electrical signal depending on relative position to a magnetic body placed so that moving direction of the piston crosses at right angle to the boundary of magnetic poles and

resin covering said Hall IC while positioning it inside,

Hall IC of the first position detecting device switches on/off of the output by magnetic force from a first magnetic pole and

Hall IC of the second position detecting device switches on/off of the output by magnetic force from a second magnetic pole.

2. The cylinder control unit according to claim 1 wherein a cavity for containing the Hall IC is formed.

3. The cylinder control unit according to claim 2 wherein a mounting section is formed outside the second section and the respective position detecting devices are formed such that their size corresponds to the mounting section.

4. The cylinder control unit according to claim 2 wherein the second position detecting device is mounted on a first magnetic pole side of the magnetic body and the first position detecting device is mounted on a second magnetic pole side of the magnetic body.

5. The cylinder control unit according to claim 1 wherein a mounting section is formed outside the second section and the respective position detecting devices are formed such that their size corresponds to the mounting section.

6. The cylinder control unit according to claim 1 provided with a frame for positioning the Hall IC inside the resin.

7. The cylinder control unit according to claim 6 wherein a positioning section having contact with mold for covering the Hall IC with the resin is formed on the frame.

8. The cylinder control unit according to claim 7 wherein a mounting section is formed outside the second section and the respective position detecting devices are formed such that their size corresponds to the mounting section.

9. The cylinder control unit according to claim 6 wherein a through opening for passing the resin before hardening is formed on the frame.

10. The cylinder control unit according to claim 7 wherein a through opening for passing the resin before hardening is formed on the frame.

11. The cylinder control unit according to claim 6 wherein a mounting section is formed outside the second section and the respective position detecting devices are formed such that their size corresponds to the mounting section.

12. The cylinder control unit according to claim 6 wherein the second position detecting device is mounted on a first magnetic pole side of the magnetic body and the first position detecting device is mounted on a second magnetic pole side of the magnetic body.

13. The cylinder control unit according to claim 7 wherein the second position detecting device is mounted on a first magnetic pole side of the magnetic body and the first position detecting device is mounted on a second magnetic pole side of the magnetic body.

14. The cylinder control unit according to claim 1 wherein the second position detecting device is mounted on a first magnetic pole side of the magnetic body and the first position detecting device is mounted on a second magnetic pole side of the magnetic body.