Magnetic bearing, apparatus comprising such a magnetic bearing and method for manufacturing such a magnetic bearing

Patent metadata

Field	Value
Publication number	US-10030703-B2
Application number	US-201514946790-A
Country	US
Kind code	B2
Filing date	Nov 20, 2015
Priority date	Nov 27, 2014
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A magnetic bearing, comprising: a magnetic base; at least three actuator bobbins mounted on the magnetic base; and magnetic sensors associated with the actuator bobbins. At least one magnetic system amidst the magnetic actuators and the magnetic sensors comprises together: a coil holder; a coil wound up around the coil holder; and a connector device integrated to the coil holder and designed for plugging at least one wire. Additionally disclosed is an apparatus comprising such a magnetic bearing and a method for manufacturing such a magnetic bearing.

First claim

What is claimed is:

1. A magnetic bearing, comprising:
a magnetic base;
at least three actuator bobbins mounted on the magnetic base; and
magnetic sensors associated with the actuator bobbins;
wherein at least one magnetic system amidst the actuator bobbins and the magnetic sensors comprises together:
a coil holder;
a coil wound up around the coil holder; and
a connector device integrated to the coil holder and designed for plugging at least one wire,
wherein the connector device is a siameze insulator displacement connector comprising similar opposite connection portions for plugging distinct wires and comprising a conductive metal alloy, the connector device being integrated to the coil holder by fitting in a slot thereof.

2. The magnetic bearing according to claim 1 , wherein the coil holder supports a single coil.

3. The magnetic bearing according to claim 2 , the coil holder further comprising two parallel plates and a central part,
wherein the coil is wound up around the central part between the two parallel plates.

4. The magnetic bearing according to claim 1 , the coil holder further comprising two lateral portions,
wherein each lateral portion supports one coil.

5. The magnetic bearing according to claim 4 , the coil holder further comprising a hinge connecting the two lateral portions.

6. The magnetic bearing according to claim 4 , each lateral portion of the coil holder further comprising two parallel plates and a central part,
wherein the coil is wound up around the central part between the two parallel plates.

7. The magnetic bearing according to claim 1 , comprising:
an actuator sub-assembly including the magnetic base provided with at least three actuator horns, each receiving an actuator coil belonging to one of the actuator bobbins; and
a sensor sub-assembly provided with at least three sensor horns, each receiving a sensor coil belonging to one of the magnetic sensors.

8. The magnetic bearing according to claim 1 , the coil holder further comprising slots for receiving the connector device.

9. The magnetic bearing according to claim 1 , wherein the connector device is an insulator displacement connector designed for receiving and automatically restraining at least one wire.

10. The magnetic bearing according to claim 9 , the connector device further comprising a straight pin and a connection portion for plugging a wire.

11. The magnetic bearing according to claim 1 , further comprising four pairs of actuator bobbins.

12. The magnetic bearing according to claim 1 , wherein the magnetic bearing is integrated into a rotary apparatus.

13. The magnetic bearing according to claim 12 , wherein the rotary apparatus is one of:
a flywheel, a turbo molecular pump, a turbo expander, a turbo compressor, an air blower, a spindle or a chiller.

14. A method for manufacturing a magnetic bearing, the magnetic bearing comprising:
a magnetic base;
at least three actuator bobbins mounted on the magnetic base; and
magnetic sensors associated with the actuator bobbins;
wherein at least one magnetic system amidst the actuator bobbins and the magnetic sensors comprises together:
a coil holder;
a coil wound up around the coil holder; and
a connector device integrated to the coil holder and designed for plugging at least one wire,
wherein the connector device is a siameze insulator displacement connector comprising similar opposite connection portions for plugging distinct wires and comprising a conductive metal alloy, the connector device being integrated to the coil holder by fitting in a slot thereof,
the method comprising steps of:
positioning the coil holder devoid of coil in an automatic winding machine;
plugging a first end of a wire destined to form the coil or coils into the coil holder;
automatically winding the wire around the coil holder to form the coil or coils;
plugging a second end of the wire into the coil holder; and
integrating a connector device to the coil holder by fitting in the slot thereof, such that the wire is automatically plugged into the connector device.

15. The method according to claim 14 , further comprising steps of:
implementing steps a) to e) for at least one of each actuator bobbin and each magnetic sensor of the magnetic bearing;
mounting the actuator bobbins on the magnetic base to form an actuator sub-assembly; and
assembling the actuator sub-assembly with a sensor sub-assembly to form the magnetic bearing.

Assignees

• Bauce Yvon
• Bienaime Francis
• Carrasco Eduardo
• Skf Magnetic Mechatronics

Inventors

• Baucé Yvon
• Bienaime Francis
• Carrasco Eduardo

Classifications

• H01F7/06

  Electromagnets; Actuators including electromagnets {(electric coils H01F5/00; devices for holding workpieces using electric force B23Q3/15; load-engaging elements for lifting articles electromagnetically B66C1/06; electromagnetic couplings F16D27/00; magnetic brakes F16D63/002; electromagnetically operated valves F16K11/24, F16K31/00; analysing materials by magnetic means G01N27/72, G01N27/80; electromagnets for winding mechanical clocks G04C1/02; electromagnetic relays H01H51/00; windings for salient poles of dynamo-electric machines H02K3/18; electromagnets for telegraphic communication H04L; for arc lamps H05B31/28)} · CPC title

• H01R4/2416

  the contact members having insulation-cutting edges, e.g. of tuning fork type · CPC title

• H01F5/02

  wound on non-magnetic supports, e.g. formers · CPC title

• F16C32/047

  Details of housings; Mounting of active magnetic bearings · CPC title

• F16C32/0461

  of stationary parts of the magnetic circuit · CPC title