Electromagnetic actuating apparatus

• US 9,761,363 B2
• Filed: 04/03/2014
• Issued: 09/12/2017
• Est. Priority Date: 05/08/2013
• Status: Active Grant

• Current Assignee: ETO Magnetic GmbH (Christa Und Hermann Laur-Stiftung)
• Original Assignee: ETO Magnetic GmbH (Christa Und Hermann Laur-Stiftung)
• Inventors: Golz, Thomas
• Primary Examiner(s): ISMAIL, SHAWKI SAIF
• Assistant Examiner(s): Homza, Lisa
• Application Number:
  US14/889,449
• Publication Number:
  US 20160099096A1
• Time in Patent Office: 1,258 Days
• Field of Search: 335282
• CPC Class Codes: F01L 2013/0052 with cams provided on an axially slidable sleeve
• CPC Class Codes: H01F 2007/062 Details of terminals or connectors for electromagnets
• CPC Class Codes: H01F 7/06 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 Class Codes: H01F 7/08 with armatures

Abstract

An electromagnetic actuating apparatus having an armature unit (14) which can move along an axial direction (10) in response to current applied to a stationary coil unit and designed to interact with an actuating partner, wherein the coil unit has a winding (22) with which a connection contact (26) can make contact. The coil unit is accommodated in a housing (12) which surrounds the coil unit at least in sections. The coil unit has an electrical connection for connecting the connection contact to a plug section (18, 20) on the housing. The connection contact (26), together with a flat end section (30) of the electrical connection, which is oriented parallel to the connection contact and is permanently connected to the connection contact, extends at least in sections parallel to the axial direction (10) or is angled out of a position of extent in this direction after connection, wherein the housing end region is axially opposite a housing outlet for the armature unit (14).

Claims

1. An electromagnetic actuating apparatus having

an armature unit (14) which can move along an axial direction (10) in response to current being applied to a stationary coil unit and which is designed to interact with an actuating partner,

wherein the coil unit has a winding (22) which is provided on a coil former (20) and with which a connection contact (26) can make contact, and said coil unit is accommodated in a housing (12) which surrounds the coil unit at least in sections,

and which has associated electrical connecting means for connecting the connection contact (26) to a plug section (18) which is provided on the housing,

wherein

the connection contact (26), together with a flat end section (30), which is oriented parallel to said connection contact (26) and is designed to be permanently connected to the connection contact (26) or is permanently connected to the connection contact (26), of the electrical connecting means, extends at least in sections in a direction parallel to the axial direction (10) on or in a housing end region (16) or is angled out of a position of extent of this kind after connection,

wherein the housing end region is axially opposite a housing outlet for the armature unit (14), and wherein the connection contact and/or the flat end section has a bend relief region (40), outside a site of connection of the connection contact to the flat end section, which permits an angling of the permanent connection.

2. The apparatus according to claim 1, wherein the connection contact 26 and/or the flat end section (30) of the connecting means is a metal stamped part.

3. The apparatus according to claim 1, further comprising a permanent connection in the form of a welded- or soldered connection (34) between end faces, directed to one another, of the connection contact (26) and the flat end section (30).

4. The apparatus according to claim 3, wherein the permanent connection has a weld projection (34) between the end faces, directed to one another, of the connection contact and the flat end section.

5. The apparatus according to claim 1, wherein the angling of the permanent connection is an angling of the connection by up to 100°

.

6. The apparatus according to claim 1, wherein the connection contact (26) for permanent connecting with the end section (30), oriented thereto and extending parallel thereto, emerges at least in a non-angled state out from the end region (16) of the housing or is exposed in the end region so that a welding device for the production of the permanent connection can engage from an engagement direction (36) running transversely to the axial direction.

7. The apparatus according to claim 1, wherein a winding wire (24) of the coil unit is electrically and mechanically connected to the connection contact (26) so that neither permanently connecting with the end section of the connecting means nor angling, subsequent thereto, exerts a mechanical stress, on the winding wire.

8. The apparatus according to claim 1, wherein a winding wire (24) of the coil unit is electrically and mechanically connected to the connection contact (26) so that neither permanently connecting with the end section of the connecting means nor angling, subsequent thereto, exerts a tensile stress, on the winding wire.

9. The apparatus according to claim 1, wherein the winding (22) of the coil former has a section extending along the axial direction and coaxially to the armature unit,

which is mechanically and/or electrically connected to the connection contact at an axial and/or radial end section (28).

10. The apparatus according to claim 9, wherein the coil unit has no connection contact extending on the casing side and/or radially.

11. The apparatus according to claim 1, wherein the connection contact (26) and the flat end section (30) oriented thereto are provided in a radial edge region of the housing end region and are constructed so that an angling in a permanently connected state can take place with free ends in a direction of a radial centre of the end region.

12. The apparatus according to claim 1, wherein the housing end region is constructed for closing and/or covering by a housing cover (42) which, in an angled state of the connection contact and the flat end section, is able to be applied onto housing end region.

13. A use of the electromagnetic actuating apparatus according to claim 1 in an engine compartment of a motor vehicle and/or as a unit or mounting of an internal combustion engine, for adjusting of a motor vehicle engine component as the actuating partner.

14. The use according to claim 13, wherein the motor vehicle engine component is a cam shaft.

15. The use according to claim 13, wherein a plurality of the electromagnetic actuating apparatuses is provided adjacent to one another for interacting with the same actuating partner.