# US 10,312,603 B2 · Fixing structure and fixing method

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- Number: US 10,312,603 B2
- Document ID: US10312603B2
- Status: Granted
- Kind: B2
- Application number: 15/821,886
- Filed: 2017-11-24
- Published: 2018-04-05
- Granted: 2019-06-04
- Earliest claimed: 2015-10-20
- Assignees: Japan Aviation Electronics Industry, Limited
- Applicants: Japan Aviation Electronics Industry, Ltd.
- Inventors: Takushi Yoshida; Hiroshi Akimoto; Yosuke Seki
- Web page: https://patentgrep.com/patent/US10312603B2

## CPC

- H01R 4/024: {comprising preapplied solder}
- B23K 1/0056: {soldering by means of beams, e.g. lasers, electron beams [EB]}
- B23K 26/389: {of fluid openings, e.g. nozzles, jets}
- H01R 43/0221: {Laser welding (H01R43/0228 takes precedence)}
- B23K 2101/42: Printed circuits
- B23K 2103/12: Copper or alloys thereof
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM

## Abstract

A fixing method for fixing a terminal to a conductive pattern with a brazing filler metal disposed therebetween includes: a first step of disposing the brazing filler metal on the conductive pattern; a second step of bringing the terminal into contact with the brazing filler metal; and a third step of forming a penetrating hole in the terminal by irradiating a laser beam onto the terminal. In the third step, the laser beam is irradiated onto the terminal in such a manner that the penetrating hole is filled with the brazing filler metal melted by the irradiation of the laser beam.

## Claims

### Claim 1

A fixing structure comprising:
a substrate;
a conductive pattern formed on the substrate;
an adhesive layer formed of a brazing filler metal; and
a terminal, the terminal being fixed to the conductive pattern by the adhesive layer,
wherein a penetrating hole is formed in the terminal, the penetrating hole being gradually widened in a direction away from the substrate toward an upper surface of a fixed portion of the terminal,
the penetrating hole is filled with the brazing filler metal, and
the brazing filler metal is a solder.

### Claim 2 (depends on 1)

The fixing structure according to claim 1, wherein the brazing filler metal spreads over an upper surface of the terminal.

### Claim 3 (depends on 1)

The fixing structure according to claim 1, wherein the conductive pattern and the adhesive layer are fixed to each other by wetting phenomena.

### Claim 4 (depends on 1)

The fixing structure according to claim 1, wherein the terminal is a Cu-based or Au-based metal.

### Claim 5

A fixing structure comprising:
a wire including a conductor;
a brazing filler metal wetting the conductor; and
a terminal, the terminal being fixed to the conductor by the brazing filler metal,
wherein a penetrating hole is formed in the terminal, the penetrating hole being gradually widened in a direction toward an upper surface of a fixed portion of the terminal,
the penetrating hole is filled with the brazing filler metal, and
the brazing filler metal is a solder.

### Claim 6 (depends on 5)

The fixing structure according to claim 5, wherein the brazing filler metal spreads over an upper surface of the terminal.

### Claim 7 (depends on 5)

The fixing structure according to claim 5, wherein the conductor and the brazing filler metal are fixed to each other by wetting phenomena.

### Claim 8 (depends on 5)

The fixing structure according to claim 5, further comprising a fixing structure body including a wire holding body configured to hold the wire and a terminal holding body configured to hold the terminal,
wherein the wire holding body and the terminal holding body are mated together.

### Claim 9 (depends on 8)

The fixing structure according to claim 8, wherein the terminal is supported by the fixing structure body at two locations sandwiching a portion of the terminal, the two locations comprising the portion being connected and fixed to the conductor.

### Claim 10 (depends on 8)

The fixing structure according to claim 8, wherein a mating surface of the terminal holding body with respect to the wire holding body is inclined with respect to a fixed surface of the terminal in such a manner that the brazing filler metal is pressed against the fixed surface of the terminal when the wire holding body and the terminal holding body are mated together.