Switch case and switch

Patent metadata

Field	Value
Publication number	US-10074495-B2
Application number	US-201615548228-A
Country	US
Kind code	B2
Filing date	Feb 22, 2016
Priority date	Feb 27, 2015
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

The switch case includes a metal plate having a first surface and a second surface that is at a side opposite to the first surface, and a resin case embedding a part of the metal plate. The resin case includes a housing portion having an opening formed on a surface of the resin case. The metal plate includes a terminal portion, a contact portion, and an intermediate portion positioned between the terminal portion and the contact portion. The terminal portion is exposed from the surface of the resin case, and the intermediate portion is embedded in the resin case. The intermediate portion is provided with at least one through-hole penetrating the first surface and the second surface. The contact portion includes a part of the first surface exposed to the housing portion of the resin case. In the at least one through-hole, the hole diameter of the at least one through-hole at the second surface is larger than the hole diameter of the at least one through-hole at the first surface.

First claim

The invention claimed is:

1. A switch case comprising:
a metal plate having a first surface and a second surface that is at a side opposite to the first surface; and
a resin case embedding a part of the metal plate, wherein:
the resin case includes a housing portion having an opening disposed on a surface of the resin case,
the metal plate includes:
a terminal portion which is exposed from the surface of the resin case,
a contact portion which is exposed from the resin case in the housing portion, and
an intermediate portion which is positioned between the terminal portion and the contact portion and is embedded in the resin case, the intermediate portion being provided with first and second through-holes each penetrating the first surface and the second surface,

a hole diameter of the first through-hole at the second surface is larger than a hole diameter of the first through-hole at the first surface, and
the first and second through-holes are positioned such that a line segment extending through centers of the first and second through-holes intersects a first side surface of the intermediate portion at a location embedded in the resin case, and the first through-hole is disposed closer to the first side surface than the second through-hole.

2. The switch case according to claim 1 , wherein a thickness of the metal plate is from 30 μm to 100 μm, inclusive.

3. The switch case according to claim 1 , wherein the hole diameter of the first through-hole at the second surface is from 30 μm to 80 μm, inclusive.

4. The switch case according to claim 1 , wherein:
a plurality of through-holes including the first and second through-holes are provided in the intermediate portion, and
a first recess that extends through only a partial thickness of the metal plate and is disposed on the second surface in the intermediate portion between two adjacent through-holes among the plurality of through-holes.

5. The switch case according to claim 4 , wherein a depth of the first recess is 5 μm or more.

6. The switch case according to claim 1 , wherein:
the intermediate portion further includes a second side surface that is at a side opposite to the first side surface, the first side surface and the second side surface being disposed between the first surface and the second surface, and
a plurality of through-holes including the first and second through-holes are provided so as to line up from the first side surface to the second side surface.

7. The switch case according to claim 1 , wherein a portion of the second surface, which constitutes the contact portion, includes:
an exposed portion exposed from the resin case, and
a plurality of second recesses disposed around the exposed portion and each extending through only a partial thickness of the metal plate.

8. The switch case according to claim 7 , wherein a depth of each of the plurality of second recesses is 5 μm or more.

9. A switch comprising:
the switch case according to claim 1 ; and
a movable member held inside the housing portion, the movable member being electrically connected to the contact portion.

10. The switch according to claim 9 , further comprising a protective sheet which covers the opening.

11. The switch case according to claim 1 , wherein a hole diameter of the second through-hole at the second surface is larger than a hole diameter of the second through-hole at the first surface.

12. A switch case comprising:
a resin case that includes a housing portion having an opening disposed on a surface of the resin case, and
a metal plate that includes a terminal portion which is exposed from a surface of the resin case, a contact portion which is exposed from the resin case in the housing portion, and an intermediate portion which is positioned between the terminal portion and the contact portion and is embedded in the resin case, wherein:
the intermediate portion includes:
a first surface,
a second surface which is at a side opposite to the first surface,
a first side surface which is disposed between the first surface and the second surface and is embedded in the resin case,
a first recess of a plurality of first recesses which is disposed on the second surface, extends through only a partial thickness of the metal plate, and is embedded in the resin case, and
a second recess of the plurality of first recesses which is disposed closer to the first side surface on the second surface than the first recess, extends through only a partial thickness of the metal plate, and is embedded in the resin case.

13. The switch case according to claim 12 , wherein the intermediate portion further includes:
a second side surface which is at a side opposite to the first side surface and is embedded in the resin case, and
a first through-hole which penetrates the first surface and the second surface, is disposed closer to the first side surface than the first recess, and is disposed closer to the second side surface than the second recess.

14. The switch case according to claim 13 , wherein the first through-hole is located on a line segment connecting the first recess and the second recess.

15. The switch case according to claim 12 , wherein the intermediate portion further includes at least two recesses of the plurality of first recesses which are disposed closer to the first side surface than the first recess, are disposed closer to the second side surface than the second recess, and each extend through only a partial thickness of the metal plate.

16. The switch case according to claim 12 , wherein the intermediate portion further includes:
a third recess of a plurality of second recesses which is disposed closer to the terminal portion than the first recess on the second surface, extends through only a partial thickness of the metal plate, and is embedded in the resin case,
a fourth recess of the plurality of second recesses which is disposed closer to the contact portion than the first recess on the second surface, extends through only a partial thickness of the metal plate, and is embedded in the resin case,
wherein the metal plate further includes an exposed portion exposed from the resin case which is positioned closer to the terminal portion than the fourth recess, is positioned closer to the contact portion than the third recess, is positioned closer to the first side surface than the first recess, and is positioned closer to the first recess than the second recess.

17. A switch case comprising:
a resin case that includes a housing portion having an opening disposed on a surface of the resin case, and
a metal plate that includes:
a terminal portion which is exposed from a surface of the resin case,
a contact portion which is exposed from the resin case in the housing portion, and
an intermediate portion which is positioned between the terminal portion and the contact portion and is embedded in the resin case,

wherein:
the intermediate portion includes first and second through-holes each penetrating between a first surface and a second surface that is at a side opposite to the first surface of the metal plate,
a dimension across the first through-hole at the second surface is larger than dimension across the first through-hole at the first surface, and
the first and second through-holes are positioned such that a line segment extending through centers of the first and second through-holes intersects a first side surface of the intermediate portion at a location embedded in the resin case, and the first through-hole is disposed closer to the first side surface than the second through-h

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Sera Naoki
• Takeuchi Masatsugu
• Nakata Daisuke

Classifications

• H01H13/10

  Bases; Stationary contacts mounted thereon · CPC title

• H01H2203/028

  embedded in layer material · CPC title

• H01H13/86

  characterised by the casing, e.g. sealed casings or casings reducible in size · CPC title

• H01H13/06 Primary

  Dustproof, splashproof, drip-proof, waterproof or flameproof casings · CPC title

• H01H2229/02

  Laser · CPC title