# US 12,119,581 B2 · Socket contact for plug connectors

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- Number: US 12,119,581 B2
- Document ID: US12119581B2
- Status: Granted
- Kind: B2
- Application number: 17/777,379
- Filed: 2020-12-10
- Published: 2022-12-22
- Granted: 2024-10-15
- Earliest claimed: 2019-12-16
- Assignees: HARTING Electric Stiftung & Co. KG
- Applicants: HARTING Electric Stiftung & Co. KG
- Inventors: Timm Meyrose
- Web page: https://patentgrep.com/patent/US12119581B2

## CPC

- H01R 13/11: Resilient sockets (carrying separate resilient parts H01R13/15)
- H01R 13/111: {co-operating with pins having a circular transverse section}
- H01R 4/183: {for cylindrical elongated bodies, e.g. cables having circular cross-section (H01R4/01 takes precedence)}
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

A socket contact (1) has a hollow cylindrical contact wire region (AB) for receiving a stripped end portion of an electrical conductor to be connected, and a hollow cylindrical contact region (KB) with a pin insertion opening (2) for receiving a contact pin. The contact region (KB) has a cylinder wall with at least one radially inwardly folded contact blade (4), the free end of which points towards the pin insertion opening (2). The cylinder wall has an at least partially circumferential groove (5) for the contact blade in the region of the fold.

## Claims

### Claim 1

A socket contact (1), comprising:
a hollow-cylindrical connector region (AB) for receiving a stripped end region of an electric conductor to be connected; and
a hollow-cylindrical contact region (KB) having a pin introduction opening (2) for receiving a contact pin,
wherein the hollow-cylindrical contact region (KB) has a cylinder wall having at least one contact blade (4) which is folded radially inward along a fold,
wherein a free end of the at least one contact blade (4) points toward the pin introduction opening (2),
wherein the cylinder wall in a region of the fold for the at least one contact blade has a groove (5) which at least partially encircles the cylinder wall, and
wherein a fixed end of the at least one contact blade (5) is connected to the groove (5) in the region of the fold of the cylinder wall.

### Claim 2 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the at least one contact blade (4) is exactly one contact blade (4).

### Claim 3 (depends on 2)

The socket contact (1) as claimed in claim 2,
wherein the hollow-cylindrical contact region (KB) has an insertion depth (T) for the contact pin, and
wherein the contact blade (4) has a length (1) which is between 40% and 95% of the insertion depth (T).

### Claim 4 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the groove (5) has a triangular, trapezoidal or sinusoidal cross section.

### Claim 5 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the groove (5) has a depth of 0.1 mm to 0.3 mm.

### Claim 6 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the pin introduction opening (2) has a diameter of 1.5 mm to 2.5 mm.

### Claim 7 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the cylinder wall in the region of the fold for the contact blade (4) has a completely encircling groove (5).

### Claim 8 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the hollow-cylindrical connector region (AB) is configured as a crimp connector.

### Claim 9 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the hollow-cylindrical connector region (AB) has a wall thickness of 0.5 mm to 1 mm.

### Claim 10 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the socket contact (1) is machined from a solid material.

### Claim 11 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the free end of the at least one contact blade (4) is of an oblique design.

### Claim 12 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein a center of the groove (5) lies eccentrically in relation to the center of the hollow cylinder of the socket contact (1).

### Claim 13 (depends on 1)

The socket contact (1) as claimed in claim 1,
wherein the groove (5) prevents brittleness of the fixed end of the contact blade (4).