# US 11,444,423 B2 · Method for manufacturing connector

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- Number: US 11,444,423 B2
- Document ID: US11444423B2
- Status: Granted
- Kind: B2
- Application number: 16/890,725
- Filed: 2020-06-02
- Published: 2021-05-13
- Granted: 2022-09-13
- Earliest claimed: 2019-11-08
- Assignees: Dongguan Leader Precision Industry Co., Ltd.
- Applicants: Dongguan Leader Precision Industry Co., Ltd
- Inventors: MengJie Peng
- Web page: https://patentgrep.com/patent/US11444423B2

## CPC

- B29C 45/14639: {for obtaining an insulating effect, e.g. for electrical components}
- H01R 43/005: {for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing}
- B29C 45/14: incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles {(B29C45/1671 takes precedence)}
- H01R 43/18: for manufacturing bases or cases for contact members
- H01R 43/24: Assembling by moulding on contact members
- B29C 2045/14459: {injecting seal elements}
- B29K 2083/00: Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
- B29K 2083/005: {LSR, i.e. liquid silicone rubbers, or derivatives thereof}
- B29L 2031/36: Plugs, connectors, or parts thereof
- H01R 13/405: Securing in non-demountable manner, e.g. moulding, riveting
- H01R 13/521: {Sealing between contact members and housing, e.g. sealing insert}
- H01R 13/5219: {Sealing means between coupling parts, e.g. interfacial seal}
- H01R 24/60: Contacts spaced along planar side wall transverse to longitudinal axis of engagement
- H01R 2107/00: Four or more poles
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

The present disclosure provides a method for manufacturing connector, comprising steps of: Obtaining a terminal module comprising a terminal body and a plurality of terminals, wherein the terminal body comprises an interface part, a hollow area, and an electrical connecting part, the hollow area is disposed between the interface part and the electrical connecting part, the plurality of terminals is disposed on the terminal body, each terminal passes through the interface part, the hollow area, and the electrical connecting part. Assembling a housing on the terminal module, wherein the hollow area passed by the plurality of the terminals is exposed from the housing. Inject-molding a waterproof block into the hollow area, wherein the waterproof block encases the plurality of the terminals disposed in the hollow area, the waterproof block is disposed between the interface part and the electrical connecting part.

## Claims

### Claim 1

A method for manufacturing a connector, comprising:
obtaining a terminal module comprising a terminal body and a plurality of terminals, wherein the terminal body comprises an interface part, a hollow area, and an electrical connecting part; the hollow area being disposed between the interface part and the electrical connecting part; the plurality of terminals being disposed on the terminal body; and each terminal passing through the interface part, the hollow area, and the electrical connecting part;
assembling a housing on the terminal module, wherein the hollow area passed by the plurality of the terminals is exposed from the housing; and
inject-molding a waterproof block into the hollow area, wherein the waterproof block encases the plurality of the terminals disposed in the hollow area; and the waterproof block is disposed between the interface part and the electrical connecting part;
wherein the method further comprises: inject-molding a casing on the housing before inject-molding the waterproof block into the hollow area, wherein the casing encases the housing and the terminal body; and the hollow area passed by the plurality of the terminals is exposed from the casing.

### Claim 2 (depends on 1)

The method for manufacturing connector according to claim 1, further comprising:
inject-molding a waterproof ring on an outer wall of the housing close to the interface part.

### Claim 3 (depends on 2)

The method for manufacturing connector according to claim 2, wherein the step of inject-molding the waterproof block into the hollow area and the step of inject-molding the waterproof ring on the outer wall of the housing close to the interface part are performed simultaneously in the same inject-molding process.

### Claim 4 (depends on 1)

The method for manufacturing connector according to claim 1, further comprising:
inject-molding a waterproof ring on an outer wall of the casing close to the interface part.

### Claim 5 (depends on 4)

The method for manufacturing connector according to claim 4, wherein the step of inject-molding the casing on the housing and the step of inject-molding the waterproof ring on the outer wall of the casing close to the interface part are performed in the same inject-molding process.

### Claim 6 (depends on 4)

The method for manufacturing connector according to claim 4, wherein the step of inject-molding the casing on the housing, the step of inject-molding the waterproof block into the hollow area, and the step of inject-molding the waterproof ring on the outer wall of the casing close to the interface part are performed in the same inject-molding process.

### Claim 7 (depends on 4)

The method for manufacturing connector according to claim 4, wherein the step of inject-molding the waterproof block into the hollow area and the step of inject-molding the waterproof ring on the outer wall of the casing close to the interface part are performed simultaneously in the same inject-molding process.

### Claim 8 (depends on 1)

The method for manufacturing connector according to claim 1, wherein a testing process is performed in the connector after the step of inject-molding the waterproof block into the hollow area.

### Claim 9 (depends on 8)

The method for manufacturing connector according to claim 8, wherein wave soldering is performed followed by airtightness test in the testing process.

### Claim 10 (depends on 1)

The method for manufacturing connector according to claim 1, wherein in the step of inject-molding the waterproof block into the hollow area, the hollow area passed by the plurality of the terminals is exposed from the top of the housing; and the step of inject-molding the waterproof block is performed by injecting from the top of the housing into the hollow area.

### Claim 11 (depends on 10)

The method for manufacturing connector according to claim 10, wherein front and rear surfaces and two side surfaces of the waterproof block are in contact with the terminal body; a bottom surface of the waterproof block is in contact with the housing; and a top surface of the waterproof block is exposed outside the housing.

### Claim 12 (depends on 1)

The method for manufacturing connector according to claim 1, wherein in the step of inject-molding the waterproof block into the hollow area, the hollow area passed by the plurality of the terminals is exposed from the side of the housing; and the step of inject-molding the waterproof block is performed by injecting from the side of the housing into the hollow area.

### Claim 13 (depends on 12)

The method for manufacturing connector according to claim 12, wherein front, rear, top, and bottom surfaces of the waterproof block are in contact with the terminal body; and two side surfaces of the waterproof block are exposed outside the housing.

### Claim 14 (depends on 1)

The method for manufacturing connector according to claim 1, wherein in the step of inject-molding the waterproof block into the hollow area, the hollow area passed by the plurality of the terminals is exposed from the rear of the housing; the step of inject-molding the waterproof block is performed by injecting from the rear of the housing into the hollow area.

### Claim 15 (depends on 14)

The method for manufacturing connector according to claim 14, wherein a rear surface of the waterproof block are exposed outside the housing; other surfaces of the waterproof block are in contact with the terminal body.

### Claim 16

A method for manufacturing a connector, comprising:
obtaining a terminal module comprising a terminal body and a plurality of terminals, wherein the terminal body comprises an interface part, a hollow area, and an electrical connecting part; the hollow area being disposed between the interface part and the electrical connecting part; the plurality of terminals being disposed on the terminal body; and each terminal passing through the interface part, the hollow area, and the electrical connecting part;
assembling a housing on the terminal module, wherein the hollow area passed by the plurality of the terminals is exposed from the housing;
inject-molding a waterproof block into the hollow area, wherein the waterproof block encases the plurality of the terminals disposed in the hollow area; and the waterproof block is disposed between the interface part and the electrical connecting part; and
inject-molding a waterproof ring on an outer wall of the housing close to the interface part;
wherein the step of inject-molding the waterproof block into the hollow area and the step of inject-molding the waterproof ring on the outer wall of the housing close to the interface part are performed simultaneously in the same inject-molding process.

### Claim 17 (depends on 16)

The method for manufacturing connector according to claim 16, wherein in the step of inject-molding the waterproof block into the hollow area, the hollow area passed by the plurality of the terminals is exposed from the top of the housing; and the step of inject-molding the waterproof block is performed by injecting from the top of the housing into the hollow area.

### Claim 18 (depends on 16)

The method for manufacturing connector according to claim 16, wherein in the step of inject-molding the waterproof block into the hollow area, the hollow area passed by the plurality of the terminals is exposed from the side of the housing; and the step of inject-molding the waterproof block is performed by injecting from the side of the housing into the hollow area.

### Claim 19 (depends on 16)

The method for manufacturing connector according to claim 16, wherein in the step of inject-molding the waterproof block into the hollow area, the hollow area passed by the plurality of the terminals is exposed from the rear of the housing; the step of inject-molding the waterproof block is performed by injecting from the rear of the housing into the hollow area.