# US 4,393,436 A · Chassis assembly

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- Number: US 4,393,436 A
- Document ID: US4393436A
- Status: Granted
- Kind: A
- Application number: 06/174,225
- Filed: 1980-07-31
- Granted: 1983-07-12
- Earliest claimed: 1979-08-04
- Assignees: Alps Electric Co., Ltd.
- Inventors: Shigekata Sugiura; Susumu Kanno
- Web page: https://patentgrep.com/patent/US4393436A

## CPC

- H05K 7/1417: {having securing means for mounting boards, plates or wiring boards (H05K7/1461 takes precedence)}
- H05K 7/18: Construction of rack or frame
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A chassis assembly for electric components having a main chassis provided with a plurality of recesses formed by projecting predetermined parts of the bottom wall outwardly. Each recess is provided with an aperture for receiving the corresponding leg of a sub-chassis carrying electric parts. The legs are inserted into and projected through the apertures and are then welded to the outside of the projected parts of the bottom wall of the main chassis. The alignment of the legs with the apertures is easily achieved and the heating of the projected parts is made in a shorter time to ensure an improved efficiency of the work and good productivity.

## Claims

### Claim 1

A chassis assembly for electric components, comprising:
a main chassis made of a metallic material and having a plurality of recesses projecting outwardly from the bottom wall thereof, each of said recesses being provided with an aperture formed centrally therein; and
a sub-chassis carrying at least one electric part and having means including metallic legs adapted to be inserted into respective ones of said apertures with said legs being projected exteriorly through said apertures of said recesses so that said legs can be soldered to the outside of said main chassis for securing said sub-chassis within said main chassis.

### Claim 2 (depends on 1)

A chassis assembly for electric components as claimed in claim 1, wherein said recesses each have an inside diameter greater than that of the respective aperture.

### Claim 3 (depends on 1)

A chassis assembly for electric components as claimed in claim 1, wherein said legs of said sub-chassis have narrowed ends.

### Claim 4

A method for assemblying a chassis for electric components, comprising the steps of:
forming a main chassis of metallic material so as to have a plurality of recesses projecting outwardly from the bottom wall thereof, each of said recesses being provided with an aperture formed centrally therein;
securing a sub-chassis carrying at least one electric part and having metallic legs to said main chassis by projecting said legs exteriorly through said apertures of said recesses and then soldering said legs to the outside of said main chassis.

### Claim 5 (depends on 4)

A method according to claim 4, including the step of forming each of said recesses with an inside diameter greater than that of the respective aperture.

### Claim 6 (depends on 4)

A method according to claim 4, including the step of forming said legs of said sub-chassis with narrowed ends.