Switch

Patent metadata

Field	Value
Publication number	US-9431196-B2
Application number	US-201314099112-A
Country	US
Kind code	B2
Filing date	Dec 6, 2013
Priority date	Jun 7, 2011
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

A roll for rotating a movable contact of a rotary switch, and a method of mounting a switch are provided. The roll includes a first slot going along the diameter of the roll and open from the top of the roll for receiving the movable contact for contacting with a stationary contact of the rotary switch, and a second slot arranged perpendicular to the first slot for receiving teeth of an upper roll to be mounted together with the roll.

First claim

What is claimed is:

1. A roll for rotating a movable contact of a rotary switch, the roll comprising:
a first slot extending along a diameter of the roll and open from a top side of the roll for receiving the movable contact for contacting with a stationary contact of the rotary switch;
a second slot arranged perpendicular to the first slot for receiving teeth of an upper roll to be mounted together with the roll; and
four teeth on the top side of the roll defining the first and second slots,
wherein the four teeth include a first tooth, a second tooth, a third tooth and fourth tooth;
the first slot is defined by a space formed between the first and second teeth and a space between the third and fourth teeth; and
the second slot is defined by a space between the first and third teeth and a space between the second and fourth teeth such that the first and second slots are each on the same end of the roll.

2. A roll according to claim 1 , wherein the teeth on the top side of the roll are equally long.

3. A roll according to claim 1 , wherein there is an empty space inside the roll between the teeth on top side of the roll.

4. A roll according to claim 1 , comprising:
at a bottom of the roll, a pair of shorter teeth arranged opposite to each other for fitting to a first slot of a lower roll and keeping the movable contact of the lower roll in place; and
a pair of longer teeth arranged opposite to each other for closing a second slot of the lower roll.

5. A roll according to claim 4 , wherein a width and depth of the teeth at the bottom of the roll correspond to a width and depth of the slots at the top of the roll.

6. A roll according to claim 4 , wherein the teeth at the bottom of the roll are aligned with the slots at the top side of the roll.

7. A roll according to claim 1 , wherein the first slot is configured to receive a substantially rectangular movable contact having a broadening in the middle of the contact fitting into an empty space of the roll and hitting one of the teeth and the roll to keep the movable contact in place in the first slot in s longitudinal direction.

8. A switch comprising:
at least two rolls according to claim 1 ,
wherein the teeth at a bottom of an upper one of the rolls are placed to slots of a lower one of the rolls.

9. A switch according to claim 8 , comprising:
a base body arranged at a bottom of the switch; and
a mechanism body at a top of the switch including elements for controlling the switch to open and closed positions.

10. A switch according to claim 9 , comprising:
at least one intermediate body arranged between the base body and the mechanism body,
wherein each of the base body and the at least one intermediate body houses a corresponding one of the rolls, and
wherein the mechanism body is configured to house a force transmission roll which has teeth only on its underside, and includes arms on its top side for connecting to a force transmission mechanism of the switch.

11. A switch according to claim 10 , wherein the rolls of the mechanism body, the at least one intermediate body and the base body form a switch shaft of the switch for rotating one or more movable contacts with respect to stationary contacts of the switch.

12. A switch according to claim 11 , wherein the base body includes a cupped round space having arms that are configured to limit rotation of a roll mounted to the base body by touching longer teeth arranged on the bottom of the roll.

13. A switch according to claim 10 , wherein the base body includes a cupped round space having arms that are configured to limit rotation of a roll mounted to the base body by touching longer teeth arranged on the bottom of the roll.

14. A switch according to 13 , wherein the mechanism body and the intermediate body comprise a round hole, and the roll includes a collar for preventing the roll falling through the hole when mounted to the body from the top side.

15. A switch according to 10 , wherein the mechanism body and the intermediate body comprise a round hole, and the roll includes a collar for preventing the roll falling through the hole when mounted to the body from the top side.

16. A method of mounting a switch, comprising:
mounting a movable contact to a first slot of a first roll, the first slot extending along a diameter of the first roll and open from a top side of the first roll for receiving the movable contact for contacting with a stationary contact of a rotary switch, the first roll having a second slot arranged perpendicular to the first slot; and
mounting a second roll to the first roll such that a pair of teeth on a bottom of the second roll set to the first slot of the first roll above the movable contact, and a pair of teeth on the bottom of the second roll set to the second slot of the first roll,
wherein the first roll comprises four teeth on the top side of the first roll defining the first and second slots,
wherein the four teeth include a first tooth, a second tooth, a third tooth and fourth tooth,
wherein the first slot is defined by a space formed between the first and second teeth and a space between the third and fourth teeth, and
wherein the second slot is defined by a space between the first and third teeth and a space between the second and fourth teeth such that the first and second slots are each on the same end of the roll.

Assignees

• Abb Oy

Inventors

• Uitto Oskari
• Suutarinen Aki
• Kolmonen Rainer

Classifications

• H01H19/64

  Encased switches adapted for ganged operation when assembled in a line with identical switches, e.g. stacked switches · CPC title

• H01H1/06 Primary

  characterised by the shape or structure of the contact-making surface, e.g. grooved · CPC title

• H01H11/00

  Apparatus or processes specially adapted for the manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88) · CPC title

• H01H19/10 Primary

  Movable parts; Contacts mounted thereon · CPC title

• H01H1/2041 Primary

  Rotating bridge · CPC title