# US 2025/0155022 A1 · Waterproof case assembly structure

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- Number: US 2025/0155022 A1
- Document ID: US20250155022A1
- Status: Published application
- Kind: A1
- Application number: 19/026,806
- Filed: 2025-01-17
- Published: 2025-05-15
- Earliest claimed: 2022-12-20
- Assignees: JVCKENWOOD Corporation
- Applicants: JVCKENWOOD Corporation
- Inventors: Koichi Yoshizawa; Fumiaki Ono
- Web page: https://patentgrep.com/patent/US20250155022A1

## CPC

- F16J 15/061: {with positioning means (F16J15/0831 takes precedence)}
- F16J 15/10: with non-metallic packing
- H05K 5/02: Details
- F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

An object is to achieve stable waterproof capabilities and assembly guarantee for sealing. An assembly structure of a waterproof case is a structure in which bosses each provided for a different one of first and second cases being separate are fixed by a screw, while an annular sealing body is sandwiched at a part where the bosses abut against each other. The assembly structure includes: an annular groove which is provided so as to surround the screw on an abutting face of the boss of the first case and with which the sealing body is arranged; a plurality of branch grooves being contiguous with the annular groove and extending outside an annular shape thereof; tongue pieces provided so as to extend outside an annular shape of the sealing body and inserted into the branch grooves; and a pressing member being attached, as a separate element, to the first case and pressing the tongue pieces inside the branch grooves.

## Claims

### Claim 1

A waterproof case assembly structure in which bosses each provided for a different one of first and second cases being separate are fixed by a screw, while an annular sealing body is sandwiched at a part where the bosses abut against each other, the waterproof case assembly structure comprising:
an annular groove which is provided so as to surround the screw on an abutting face of the boss of the first case and with which the sealing body is arranged;
a plurality of branch grooves being contiguous with the annular groove and extending outside an annular shape thereof;
tongue pieces provided so as to extend outside an annular shape of the sealing body and inserted into the branch grooves; and
a pressing member being attached, as a separate element, to the first case and pressing the tongue pieces inside the branch grooves.

### Claim 2 (depends on 1)

The waterproof case assembly structure according to claim 1, wherein
the plurality of branch grooves are provided so as to extend in mutually-different directions, and
the plurality of tongue pieces are provided so as to extend in mutually-different directions and to be inserted in the branch grooves.

### Claim 3 (depends on 2)

The waterproof case assembly structure according to claim 2, wherein the plurality of tongue pieces are pressed by the single pressing member.

### Claim 4 (depends on 1)

The waterproof case assembly structure according to claim 1, wherein a width dimension of each of the tongue pieces is smaller than a groove width of each of the branch grooves.

### Claim 5 (depends on 1)

The waterproof case assembly structure according to claim 1, wherein a constriction part is provided at a basal part of each of the tongue pieces.

### Claim 6 (depends on 1)

The waterproof case assembly structure according to claim 1, wherein
the first case has formed therewith a plurality of annular grooves including the annular groove, and
the single pressing member presses the tongue pieces provided for a plurality of sealing bodies that include the sealing body and arranged in the plurality of annular grooves.

### Claim 7 (depends on 1)

The waterproof case assembly structure according to claim 1, further comprising: a position determining part that determines a position of the pressing member to be such a position that the tongue pieces are pressed inside the branch grooves.

### Claim 8 (depends on 7)

The waterproof case assembly structure according to claim 7, wherein the pressing member is structured by using a substrate attached to the first case.