# US 2014/0197340 A1 · Component for a Magnetic Actuator as Well as a Method for its Manufacture

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- Number: US 2014/0197340 A1
- Document ID: US20140197340A1
- Status: Published application
- Kind: A1
- Application number: 14/129,182
- Filed: 2012-05-08
- Published: 2014-07-17
- Earliest claimed: 2011-06-29
- Assignees: Robert Bosch GmbH
- Inventors: Rainer Walter; Johannes Schmid; Juergen Graner; Matthias Schumacher; Andreas Burghardt; Ralph Engelberg; Jochen Rager
- Web page: https://patentgrep.com/patent/US20140197340A1

## CPC

- F16K 31/0675: {Electromagnet aspects, e.g. electric supply therefor}
- F02M 51/0614: {characterised by arrangement of electromagnets or fixed armature}
- F02M 63/0019: {characterised by the arrangement of electromagnets or fixed armatures}
- F02M 2200/8046: the manufacture involving injection moulding, e.g. of plastic or metal
- F02M 2200/9061: Special treatments for modifying the properties of metals used for fuel injection apparatus, e.g. modifying mechanical or electromagnetic properties
- Y10T 137/0491: Valve or valve element assembling, disassembling, or replacing
- Y10T 137/5987: Solenoid or electromagnetically operated valve
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A single-piece component for a magnetic actuator, in particular for fuel injection, including an internal pole, a magnetic sleeve, and a non-magnetic separating sleeve, the internal pole, the magnetic sleeve and the separating sleeve being integrated into the single-piece component. A method for manufacturing a single-piece component for an magnetic actuator with the aid of a two-component powder injection molding method.

## Claims

### Claim at position 1

1-12. (canceled)

### Claim 13

A single-piece component for a magnetic actuator, which is a solenoid valve, comprising:
an internal pole;
a magnetic sleeve; and
a non-magnetic separating sleeve, wherein the internal pole, the magnetic sleeve and the separating sleeve are integrated into the single-piece component.

### Claim 14 (depends on 13)

The component of claim 13, further comprising:
a housing, which is additionally integrated into the single-piece component.

### Claim 15 (depends on 13)

The component of claim 13, wherein the internal pole is segmented, and wherein individual segments of the internal pole are separated from one another by segmenting areas, the segmenting areas being situated on the separating sleeve.

### Claim 16 (depends on 14)

The component of claim 14, wherein the housing has a connecting flange for a connection of the single-piece component.

### Claim 17 (depends on 13)

The component of claim 13, wherein the internal pole has a radial flange directed radially outwards.

### Claim 18 (depends on 13)

The component of claim 13, wherein the separating sleeve has a profiling, which is configured for accommodating a winding.

### Claim 19 (depends on 13)

The component of claim 13, wherein the separating sleeve has a radially outwards directed first wall area on a first axial end and a radially outwards directed second wall area on a second axial end.

### Claim 20 (depends on 19)

The component of claim 19, further comprising:
a winding, which is situated in a receiving space formed between the first and the second wall areas.

### Claim 21 (depends on 19)

The component of claim 19, wherein the internal pole is situated between the first wall area and the second wall area.

### Claim 22 (depends on 21)

The component of claim 21, wherein one of the wall areas of the separating sleeve forms a stop for a valve needle or a component connected to the valve needle.

### Claim 23

A solenoid valve, comprising:
a magnetic actuator, which is an injector, for fuel injection, having a component;
wherein the component is a single-piece component for the magnetic actuator, including an internal pole, a magnetic sleeve, and a non-magnetic separating sleeve, and wherein the internal pole, the magnetic sleeve and the separating sleeve are integrated into the single-piece component.

### Claim 24

A method for manufacturing a single-piece component, which is a solenoid valve, the method comprising:
a two-component powder injection molding operation, which includes performing the following:
injection molding a non-magnetic material; and
injection molding a magnetic material;
wherein the injection moldings are performed simultaneously or following one another in any sequence, and wherein the single-piece component includes an internal pole, a magnetic sleeve, and a non-magnetic separating sleeve.