JPH03163716A - Overlap type power supply changeover switch - Google Patents

Abstract

PURPOSE:To eliminate service interruption on the load side even for an instant by making an overlap state, in which both power supplies are simultaneously connected to a load at the time of switching the power supply to be connected to the load. CONSTITUTION:When an operation lever 3 is circularly turned by a manual or power supply operation in order to switch power supply to be connected to a load from power supply A to power supply B, subsequently thereto a switching roller 11 rises along one side tilted path 12a of an almost V-shaped guide hole 12. One side control lever 23 turns anticlockwise in Fig. 6 to rise its tip, being pushed by a rising switching roller 11, and as well as its tip rises, one side operation axis 21 turns. In association with turning of the operation axis 21, one side movable contact shoe 34 connects a contact shoe 38 on the side of power supply B to a contact shoe 39 on the load side. Then, a state, wherein both power supplies A and B are connected to the load side, can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a power switching switch for selectively connecting two different power sources to a load. This invention relates to a power supply switching switch that can create an overlapping state in which both power supplies are simultaneously connected to a load so that there is no instantaneous power outage on the load side when switching the connected power supplies.

(Conventional technology)

Claims (1)

[Claims] An operating lever that can be pivoted by manual or electric operation and can be restored instantly by a spring force; A control shaft that can be raised and lowered freely and is located in the center of the guide hole when the operating lever is in the restored position, and the left and right inclined passages are alternately closed so that this control shaft can be raised and lowered alternately along the left and right inclined passages of the guide hole. a point plate that moves upward along the right or left inclined path of the guide hole, is pushed by the control shaft, and rotates to the right or left about the operating shaft against a restoring spring, respectively; A pair of left and right control levers whose tips rise alternately, and in conjunction with the alternating rotation of each of the control levers, when the tips of the control levers are in the upper position, the first or second power supply side contacts and the load are connected, respectively. a movable contact that connects the side contact and separates the first or second power side contact and load side contact when the tip of the control lever is in the lower position; and a movable contact that rotates integrally with the control lever. A pair of left and right latch levers, one end of which is fixed on the operating shaft, are moved so that the ends of the latch levers are moved up and down alternately together with the control lever. In order to control the tips so that they are in the raised position at the same time, a latch plate is provided between the pair of latch levers, which is pivotally mounted to allow free tilting from side to side. It is pushed by the tip of the latch lever and tilts toward the other latch lever, and it contacts the tip of one latch lever that is in the lowered position and maintains that tilted state until the tip of the other latch lever reaches the raised position. An overlap type power switching switch characterized by having a cam surface that comes into contact with a latch lever to maintain the raised position.