Apparatus and methods for latching, and systems including the same

Patent metadata

Field	Value
Publication number	US-10811200-B2
Application number	US-201715723777-A
Country	US
Kind code	B2
Filing date	Oct 3, 2017
Priority date	Oct 14, 2016
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

Abstract

The latching apparatus of the present disclosure includes an actuator configured to change from a first position to a second position; a core connector coupled to the actuator at a first end, and having a cam disposed thereon; and a follower located between the actuator and the cam; wherein the actuator pushes the follower when changing from the first position to the second position, such that the follower engages with the cam on the core connector and causes the cam to rotate an angle to enter a latching state, wherein during the latching state, the core connector configured to hold the actuator secured at the second position. Switch systems and Methods for switching a latching apparatus are also disclosed.

First claim

What is claimed is:

1. A latching apparatus, comprising:
an actuator configured to change from a first position to a second position;
a core connector coupled to the actuator at a first end, and having a cam disposed thereon; and
a follower located between the actuator and the cam,
wherein the actuator pushes the follower when changing from the first position to the second position, such that the follower engages with the cam on the core connector and causes the cam to rotate an angle to enter a latching state, wherein during the latching state, the core connector configured to hold the actuator secured at the second position.

2. The latching apparatus according to claim 1 , further comprising a housing surrounding the core connector with a stop disposed on an inner surface of the housing, wherein the cam of the core connector abuts against the stop on the housing during the latching state.

3. The latching apparatus according to claim 1 , wherein the core connector has a second end opposing the first end with an annular surface extending radially and outwardly from a center axis of the core connector, such that the cam rotates the angle on the annular surface when the follower engages with the cam of the core connector.

4. The latching apparatus according to claim 1 , wherein the first end of the core connector at least partially extends to an inner region of the actuator, and the first end of the core connector comprises at least one protrusion, wherein the at least one protrusion secures the actuator to hold the actuator at the second position during the latching state.

5. The latching apparatus according to claim 4 , further comprising an elastic member disposed between the actuator and the follower to apply a counterforce to the actuator, such that the actuator contacts with the at least one protrusion of the core connector.

6. The latching apparatus according to claim 4 , wherein the at least one protrusion of the core connector is formed of a conductive material, and at least a portion of an inner surface of the actuator is formed of the conductive material, such that the at least one protrusion contacts with the portion formed of the conductive material only when the actuator is located at the second position.

7. The latching apparatus according to claim 6 , further comprising an indicator electrically connected to the at least one protrusion of the core connector.

8. The latching apparatus according to claim 4 , wherein the core connector has a second end opposing the first end, and the cam is mounted on the second end of the core connector or integrated with the second end of the core connector, such that the core connector and the cam together rotates the angle when the follower engages with the cam of the core connector.

9. The latching apparatus according to claim 1 , wherein the first end of the core connector at least partially extends to an inner region of the actuator, and the first end of the core connector comprises a structure selected from the group consisting of: a screw, a hook, a pin, and a ball.

10. A switch system, comprising:
a latching apparatus, comprising:
an actuator configured to change from a first position to a second position;
a core connector coupled to the actuator at a first end, and having a cam disposed on a second end opposing the first end; and
a follower located between the actuator and the cam; and

a control element coupled to the second end of the core connector of the latching apparatus,
wherein the actuator pushes the follower when changing from the first position to the second position, such that the follower engages with the cam on the core connector and causes the cam to rotate an angle, and the latching apparatus adjusts the control element through the core connector to enter a latching state, wherein during the latching state, the core connector is configured to hold the actuator secured at the second position.

11. The switch system according to claim 10 , further comprising a housing surrounding the latching apparatus with a stop disposed on an inner surface of the housing, wherein the cam of the core connector abuts against the stop on the housing during the latching state.

12. The switch system according to claim 10 , wherein the first end of the core connector at least partially extends to an inner region of the actuator, and the first end of the core connector comprises at least one protrusion, wherein the at least one protrusion secures the actuator to hold the actuator at the second position during the latching state.

13. The switch system according to claim 10 , wherein the core connector is made of a conductive material, and further comprising an indicator electrically connected to the core connector made of the conductive material, wherein the indicator is conducted only when the actuator of the latching apparatus is in the second position.

14. The switch system according to claim 10 , wherein the control element is a conductive switch or a fluid valve.

15. A method for switching a latching apparatus, comprising:
pressing an actuator to change the actuator from a first position to a second position;
moving a follower through the actuator, such that the follower engages with a cam on a core connector and causes the cam to rotate an angle to enter a latching state, wherein the core connector is coupled to the actuator at a first end and has the cam disposed on a second end opposing the first end; and
holding the actuator secured at the second position by the core connector being coupled to the actuator.

16. The method according to claim 15 , further comprising: activating an indicator via connections between the actuator and the core connector when the actuator is at the second position.

17. The method according to claim 15 , wherein the step of moving the follower comprising: moving the follower through an elastic member disposed between the actuator and the follower.

18. The method according to claim 15 , further comprising: abutting the cam against a stop of a housing after the cam being rotated by the angle, so as to enter the latching state, wherein the housing surrounds the core connector.

19. The method according to claim 18 , further comprising:
pressing the actuator when it is at the second position, such that the actuator moves the follower again;
engaging the follower with the cam on the core connector and causing the cam to rotate another angle, such that the cam leaves the stop of the housing; and
restoring the actuator from the second position back to the first position.

20. The method according to claim 19 , wherein the restoration of the actuator from the second position back to the first position is performed by a restorer coupled to the second end of the core connector.

Assignees

• Illinois Tool Works
• Illinois Took Works Inc

Inventors

• Hsu Abel

Classifications

• H01H13/56 Primary

  the contact returning to its original state upon the next application of operating force · CPC title

• F01L13/0036

  the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction · CPC title

• H01H13/14 Primary

  Operating parts, e.g. push-button · CPC title

• F16K31/02

  electric {(F16K31/004 takes precedence)}; magnetic · CPC title

• H01H13/04

  Cases; Covers · CPC title