Switching device comprising a resetting device

Patent metadata

Field	Value
Publication number	US-2018082810-A1
Application number	US-201715701829-A
Country	US
Kind code	A1
Filing date	Sep 12, 2017
Priority date	Sep 16, 2016
Publication date	Mar 22, 2018
Grant date	—

Abstract

A switching device includes a shell delimiting a plurality of spaces each able to accommodate a trip including a tripping device, a switching device, and a control mechanism including a device for grasping that can be moved between a first position and a second position by an operator in order to control movement of the switching device between an open position and a closed position. The switching device is in the closed position when the device for grasping is in the first position and in the open position when the device for grasping is in the second position. The control mechanism includes a single resetting device that resets each trip when the operator moves the device for grasping from the first position into the second position.

First claim

1 . A switching device comprising:
a shell, a switching device including an input connection terminal and an output connection terminal and adapted to switch between a closed position allowing the passage of the current between the input connection terminal and the output connection terminal and an open position preventing the passage of the current between the input connection terminal and the output connection terminal, and a device for controlling the switching device, the control device including a grasping device movable between a first position and a second position by an operator to command the movement of the switching device between the open position and the closed position, the switching device being in the closed position when the grasping device is in the first position and being in the open position when the grasping device is in the second position, the shell further delimiting a plurality of spaces each able to accommodate a trip including a tripping device mobile between an armed position and a tripped position, the tripping device being configured to command the movement of the switching device from its closed position to its open position when the tripping device goes from its armed position to its tripped position, wherein the control device further includes a single resetting device configured to move each tripping device from its tripped position to its armed position when the operator moves the grasping device from the first position to the second position.

2 . The switching device according to claim 1 , including trips, the resetting device being configured to move the tripping devices of the trips conjointly from the tripped positions to the respective armed positions when the operator moves the grasping device from the first position to the second position.

3 . The switching device according to claim 1 , wherein the grasping device includes a crank mobile in rotation about a first axis relative to the shell, the resetting device being mobile in rotation relative to the shell about a second axis parallel to the first axis, the crank coming to bear against the resetting device when the grasping device is moved by the operator from the first position to the second position.

4 . The switching device according to claim 3 , wherein the crank includes a handle, a bearing configured to allow rotation of the crank about the first axis and at least one arm connecting the handle to the bearing, the resetting device including at least one first branch and one second branch, the first branch having a first end and a second end, the first end bearing against the arm or one of the arms of the crank and the second end surrounding the second axis in a plane perpendicular to the second axis, the second branch having a third end in one piece with the second end and a fourth end bearing against the tripping device of a corresponding trip.

5 . The switching device according to claim 4 , including a first trip and a second trip, each trip being accommodated in a corresponding space of the shell, a resetting force being defined for each trip as being the minimum value of the force that the resetting device must apply to the tripping device of the trip to move the tripping device from the tripped position to the armed position, the resetting force of the first trip being different from the resetting force of the second trip, each resetting force corresponding to a bearing force exerted at a bearing point on a first branch by at least one arm of the crank, the resetting device being configured so that the bearing force corresponding to the first trip is equal to the bearing force corresponding to the second trip.

6 . The switching device according to claim 5 , wherein the resetting force of the first trip and the resetting force of the second trip have the same moment about the second axis.

7 . The switching device according to claim 6 , wherein each second branch comprises a first portion and a second portion, the first portion connecting the second portion to the second end of the corresponding first branch, each second portion having a circular cylindrical face about a corresponding third axis, each third axis being parallel to the second axis, the cylindrical face coming to bear against the tripping device to move the tripping device to the armed position, a distance between the third axes being strictly greater than zero.

8 . The switching device according to claim 4 , wherein the crank includes two arms, the resetting device including two first branches and two second branches, each first branch extending in a direction perpendicular to the second axis, the resetting device further including a bar fastening together the first ends of the two first branches, the bar extending in a direction parallel to the second axis.

9 . The switching device according to claim 4 , wherein each arm of the crank has a bearing face, the first end of a corresponding first branch bearing against the bearing face, a distance being defined for each point of the bearing face between the point concerned and the first axis, an angle being defined for each point of the bearing face between the tangent to the bearing face at the point concerned and a line connecting the point to the first axis, the bearing face being concave and the angle increasing with the distance.

10 . The switching device according to claim 4 , wherein each first branch includes a roller configured to roll or to slide against at least one arm of the crank.

11 . The switching device according to claim 1 , wherein the switching device is a circuit breaker.

Assignees

• Schneider Electric Ind Sas

Inventors

• Court Frederic

Classifications

• H01H21/36

  Driving mechanisms · CPC title

• H01H71/521

  Details concerning the lever handle · CPC title

• H01H71/0228 Primary

  having provisions for interchangeable or replaceable parts · CPC title

• H01H3/00 Primary

  Mechanisms for operating contacts ({for tap changers H01H9/0027;} thermal actuating or release means H01H37/02) · CPC title

• H01H71/52

  actuated by lever · CPC title