Electromagnetic actuating device, use and method for producing same

Patent metadata

Field	Value
Publication number	US-11536225-B2
Application number	US-201816645193-A
Country	US
Kind code	B2
Filing date	Aug 14, 2018
Priority date	Sep 8, 2017
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

An electromagnetic positioning device includes an armature member for actuating a positioning partner and movable in an armature space relative to a stationary core ( 30 ). The armature member conducts magnetic flux upon energization of a stationary coil ( 32 ). The coil has a coil support with a winding and at least one external contactable connector ( 46 ) embedded at least in sections in the core and/or surrounded by the core. The core has an end surface ( 34 ), which is planar at least in sections, for interacting with the armature member. The core and the coil are embedded in and/or surrounded by a one-piece pot-like and/or cup-like housing ( 38 ) made of a material suitable for deep-drawing in such a manner that the core rests on a membrane-like, continuous and closed base section of the housing, the base section realizing a boundary surface of the armature space.

First claim

The invention claimed is:

1. An electromagnetic positioning device having armature means which are realized for actuating a positioning partner and which are movable in an armature space relative to stationary core means ( 30 ), which conduct magnetic flux, as a reaction to an energization of stationary coil means ( 32 ),
the coil means, which have a coil support ( 32 ) provided with a winding and at least one external contactable connector ( 46 ), being embedded at least in sections in the core means and/or being surrounded by said core means
and the core means realizing an end surface ( 34 ), which is planar at least in sections, for interacting with the armature means,
wherein
the core means and the coil means are embedded in and/or surrounded by a one-piece pot-like and/or cup-like housing ( 38 ) made of a material suitable for deep-drawing in such a manner that the core means rest on a membrane-like, continuous and closed base section of the housing,
the base section realizing a boundary surface of the armature space, and wherein the core means ( 30 ) are surrounded by an encapsulation ( 40 ), the outer diameter of said encapsulation being adapted to a clear inside width of the pot-like or cup-like housing.

2. The device according to claim 1 , wherein the core means ( 30 ) are realized as a plurality of stacked sheet metal elements.

3. The device according to claim 2 , wherein the plurality of stacked sheet metal elements ( 30 ) are produced by punching.

4. The device according to claim 1 , wherein the core means ( 30 ) are realized as bodies made of sinter material.

5. The device according to claim 1 , wherein the coil support ( 32 ), which is made of a plastic material, and which supports the winding, is inserted into the core means ( 30 ).

6. The device according to claim 5 , wherein the coil support ( 32 ) is an injection-molded part.

7. The device according to claim 5 , wherein an end face ( 36 ) of said coil support is in contact with the base section.

8. The device according to claim 1 , wherein the encapsulation realizes a plug or socket section ( 46 ) of the externally contactable connector of the coil means.

9. The device according to claim 1 , wherein the encapsulation is dimensioned and realized in such a manner that the externally contactable connector projects from the housing in a direction which is opposite to the base section and/or can be externally contacted there.

10. The device according to claim 1 , wherein the housing ( 38 ) is produced by deep-drawing a steel material.

11. The device according to claim 1 , wherein the armature means, which are realized as flat armatures, are realized for interacting with a valve seat or for actuating plunger-like or needle-like injection means.

12. The device according to claim 11 , wherein the injection means are injection means for a gaseous fluid.

13. A use of the device according to claim 1 for realizing a gas valve, the positioning partner being a valve assembly of the gas valve.

14. The use according to claim 13 , wherein the positioning partner is a valve seat of the gas valve.

15. A method for producing the electromagnetic positioning device according to claim 1 , comprises the steps of:
inserting the coil support provided with the winding into the core means ( 30 ),
encapsulating the core means comprising the inserted coil support with a casting compound in such a manner that a body is realized which is adapted to an inside width of the pot-like or cup-like housing and
inserting the body into the housing in such a manner that the plane end surface of the core means rests on the base section of the housing.

16. The method according to claim 15 , wherein a plug section or a socket section for the external contacting of the connector of the coil means is produced by the encapsulation.

17. The device according to claim 1 , wherein the encapsulation ( 40 ) is a cylindrical encapsulation.

Assignees

• Eto Magnetic Gmbh

Inventors

• Zwickel Rainer
• Füllgrabe Dirk
• Riedle Achim
• Maschke Manfred
• Mantsch Lutz
• Kraft Holger

Classifications

• H01F7/1638 Primary

  Armatures not entering the winding · CPC title

• H01F7/127

  Assembling · CPC title

• F02M63/0019

  characterised by the arrangement of electromagnets or fixed armatures · CPC title

• F02M21/0254 Primary

  Electric actuators, e.g. solenoid or piezoelectric · CPC title

• H01F7/128

  Encapsulating, encasing or sealing · CPC title