Reed with hinge for reed switch

Patent metadata

Field	Value
Publication number	US-9406471-B2
Application number	US-201414218247-A
Country	US
Kind code	B2
Filing date	Mar 18, 2014
Priority date	Mar 18, 2014
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

A reed for a reed switch and a reed switch are provided. The reed may include a first portion having a first thickness and a first length, a second portion having a second thickness and a second length, and a hinged portion disposed between the first portion and the second portion, the hinged portion having a third thickness and a third length, wherein the third length is less than 150% of the first thickness and the third thickness is less than each of the first thickness and the second thickness. The reed switch may include the reed disposed in an insulating housing with a reed deformer to deform the reed.

First claim

The invention claimed is:

1. A reed for a reed switch comprising:
a first portion having a first thickness and a first length;
a second portion having a second thickness and a second length;
a hinged portion disposed between the first portion and the second portion, the hinged portion having a third thickness and a third length, wherein the third length is less than 150% of the first thickness and the third thickness is less than each of the first thickness and the second thickness; and
a third portion extending directly from an end of the second portion distal to the hinged portion, the third portion having a fourth thickness and a fourth length, wherein the fourth thickness is less than the second thickness and greater than the third thickness.

2. A reed switch comprising:
a first electrically conductive reed comprising:
a terminal portion; and
a first portion;

a second electrically conductive reed comprising:
a terminal portion having a first thickness and a first length;
a first portion having a second thickness and a second length; and
a hinged portion disposed between the terminal portion and the first portion, the hinged portion having a third thickness and a third length; and
a second portion extending directly from an end of the first portion distal to the hinged portion, the second portion having a fourth thickness and a fourth length, wherein the fourth thickness is less than the second thickness and greater than the third thickness; and

an insulating housing having a cavity;

wherein the first electrically conductive reed and the second electrically conductive reed are partially disposed in the insulating housing such that the terminal portions extend out from the insulating housing and the first portions are proximate to each other in the cavity; and
wherein the third length is less than 150% of the first thickness and the third thickness is less than each of the first thickness and the second thickness.

3. The reed switch of claim 2 , wherein the first portion of the first electrically conductive reed is separated from the second portion of the second electrically conductive reed by a gap, the reed switch further comprising a reed deformer configured to deform the second electrically conductive reed to close the gap during an on state of the reed switch.

4. The reed switch of claim 2 , wherein the insulating housing is formed from glass.

5. The reed switch of claim 2 , wherein the second electrically conductive reed is disposed in the insulating housing such that the hinged portion is proximate to an inner wall of the insulating housing.

6. A reed switch comprising:
a pair of electrically conductive reeds, each of the electrically conducive reeds comprising:
a terminal portion having a first thickness and a first length;
a first portion having a second thickness and a second length; and
a hinged portion disposed between the terminal portion and the first portion, the hinged portion having a third thickness and a third length; and
a second portion extending directly from an end of the first portion distal to the hinged portion, the second portion having a fourth thickness and a fourth length, wherein the fourth thickness is less than the second thickness and greater than the third thickness; and
an insulating housing having a cavity;
wherein the pair of electrically conductive reeds are partially disposed in the insulating housing such that the terminal portions extend out from the insulating housing and the second portions are proximate to each other in the cavity, and
wherein the third length is less than 150% of the first thickness and the third thickness is less than each of the first thickness and the second thickness.

Assignees

• Pickhard Mark
• Littelfuse Inc

Inventors

• Pickhard Mark

Classifications

• H01H50/14

  Terminal arrangements {(for coils H01H50/443)} · CPC title

• H01H36/006

  comprising a plurality of reed switches, e.g. selectors or joystick-operated · CPC title

• H01H50/02

  Bases; Casings; Covers (frames for mounting two or more relays or for mounting a relay and another electric component H02B1/01, H04Q1/08, H05K) · CPC title

• H01H1/5822 Primary

  Flexible connections between movable contact and terminal · CPC title

• H01H51/287

  Details of the shape of the contact springs · CPC title