Increased push travel alternative for energy regulator

Patent metadata

Field	Value
Publication number	US-11810741-B2
Application number	US-202117509707-A
Country	US
Kind code	B2
Filing date	Oct 25, 2021
Priority date	Nov 9, 2020
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

An infinite switch includes a front cover, a back cover, and a base secured between the front cover and the back cover. A floating shaft extending through the front cover and the base. A cam fixed to the base and slidingly receiving an end of the floating shaft. The floating shaft is moveable in an axial direction extending parallel to a longitudinal axis of the floating shaft and the cam is fixed to prevent movement in the axial direction.

First claim

What is claimed is:

1. An infinite switch, the infinite switch comprising:
a front cover,
a back cover,
a base secured between the front cover and the back cover;
a floating shaft extending through the front cover and the base, the floating shaft having a channel in a keyed end;
a cam fixed to the base and slidingly receiving the keyed end of the floating shaft;
a spring extending from inside the channel to abut the cam;
wherein the floating shaft is moveable in an axial direction extending parallel to a longitudinal axis of the floating shaft and the cam is fixed to prevent movement of the cam in the axial direction.

2. The infinite switch of claim 1 , wherein the keyed end has a square cross section and a cooperating cavity of the cam provides a square bearing surface that receives the keyed end such that rotation of the floating shaft rotates the cam.

3. The infinite switch of claim 2 , the cam having a ramped cam surface, wherein the rotation of the ramped cam surface moves a cam follower of a terminal within the infinite switch.

4. An infinite switch, the infinite switch comprising:
a front cover,
a back cover,
a base secured between the front cover and the back cover;
a washer having a cylindrical wall surrounding a through cavity of the washer, the washer fixedly located between the front cover and the base;
a floating shaft extending through the front cover and the base;
a cam fixed to the base and slidingly receiving an end of the floating shaft;
wherein the floating shaft is moveable in an axial direction extending parallel to a longitudinal axis of the floating shaft and the cam is fixed to prevent movement of the cam in the axial direction.

5. The infinite switch of claim 4 , wherein the cylindrical wall of the washer includes a notch.

6. The infinite switch of claim 5 , wherein the floating shaft extends through the washer, the floating shaft includes a ring having a detent, the ring fixed to and surrounding the floating shaft, the detent receivable in the notch.

7. The infinite switch of claim 6 , wherein the cam mounts to a mounting boss of the base, wherein a cylindrical wall of the cam is located between the shaft and the mounting boss.

8. The infinite switch of claim 6 , wherein movement of the floating shaft in the axial direction towards the cam a push distance that is equal to the height of the cylindrical wall of the washer, unseats the detent from the notch.

9. The infinite switch of claim 8 , wherein the floating shaft and the cam are rotatable only after the detent is completely outside the notch.

10. An infinite switch, the infinite switch comprising:
a floating shaft extending through a front cover, a washer, and a base to a cam within the infinite switch;
a ring fixed to and surrounding the floating shaft;
a first stop defined by the washer;
a second stop defined by the cam fixed to the base;
wherein movement of the floating shaft in directions extending parallel to a longitudinal axis of the shaft is limited by the ring as it abuts either the first stop or the second stop.

11. The infinite switch of claim 10 , the floating shaft extending through a through cavity of the washer, the through cavity surrounded by a cylindrical wall of the washer.

12. The infinite switch of claim 11 , wherein the cylindrical wall includes a notch, the ring includes a detent receivable in the notch, and the floating shaft has a channel in a keyed end, a spring extends from inside the channel to abut the cam.

13. An infinite switch, the infinite switch comprising:
a floating shaft extending through a front cover, a washer, and a base to a cam within the infinite switch;
a ring fixed to and surrounding the floating shaft;
a first stop defined by the washer;
a second stop defined by the cam fixed to the base;
wherein movement of the floating shaft in directions extending parallel to a longitudinal axis of the shaft is limited by the ring as it abuts either the first stop or the second stop;
the floating shaft extending through a through cavity of the washer, the through cavity surrounded by a cylindrical wall of the washer;
wherein the cylindrical wall includes a notch, the ring includes a detent receivable in the notch, and the floating shaft has a channel in a keyed end, a spring extends from inside the channel to abut the cam;
the infinite switch having a first state, wherein in the first state the spring biases the ring of the floating shaft into the through cavity of the washer.

14. The infinite switch of claim 13 , wherein in the first state the detent is rotationally fixed inside the notch.

15. An infinite switch, the infinite switch comprising:
a floating shaft extending through a front cover, a washer, and a base to a cam within the infinite switch;
a ring fixed to and surrounding the floating shaft;
a first stop defined by the washer;
a second stop defined by the cam fixed to the base;
wherein movement of the floating shaft in directions extending parallel to a longitudinal axis of the shaft is limited by the ring as it abuts either the first stop or the second stop;
the floating shaft extending through a through cavity of the washer, the through cavity surrounded by a cylindrical wall of the washer;
wherein the cylindrical wall includes a notch, the ring includes a detent receivable in the notch, and the floating shaft has a channel in a keyed end, a spring extends from inside the channel to abut the cam;
the infinite switch having a second state, wherein in the second state, a pushing force applied to the floating shaft in a first direction parallel to the longitudinal axis of the shaft and towards the cam compresses the spring between the floating shaft and the cam.

16. The infinite switch of claim 13 , wherein in the second state the detent is located outside the notch.

17. The infinite switch of claim 16 , wherein in the second state the floating shaft is rotatable.

18. The infinite switch of claim 17 , wherein the cam is fixed to the base while the floating shaft moves from the first state to the second state.

19. The infinite switch of claim 18 , wherein movement from the first state to the second state requires the pushing force to move the detent outside the notch and a rotational force to rotate the detent such that when the pushing force is removed, the floating shaft does not move in a direction away from cam and the detent abuts the cylindrical wall and remains outside the notch.

Assignees

• Canales Benavides Gustavo Alonso
• Romero Ruben Simon
• Aguilar Fernandez Javier Tomas
• Robertshaw Controls Co

Inventors

• Canales Benavides Gustavo Alonso
• Romero Ruben Simon
• Aguilar Fernández Javier Tomas

Classifications

• H01H37/52 Primary

  actuated due to deflection of bimetallic element · CPC title

• H01H9/02

  Bases, casings, or covers (accommodating more than one switch or a switch and another electrical component H02B1/26) · CPC title

• H01H37/12 Primary

  Means for adjustment of "on" or "off" operating temperature · CPC title

• H01H89/04

  Combination of a thermally actuated switch with a manually operated switch · CPC title

• H01H25/06

  Operating part movable both angularly and rectilinearly, the rectilinear movement being along the axis of angular movement · CPC title