Search

CN-113012954-B - Three-station operating mechanism and switch equipment with same

CN113012954BCN 113012954 BCN113012954 BCN 113012954BCN-113012954-B

Abstract

The invention relates to a three-station operating mechanism and switching equipment with the same. The three-position operating mechanism is mounted to the base and includes an output plate and two toggle plates. The three-station operating mechanism further comprises two limiting pins. The first limiting peripheral edge of each shifting plate is abutted to an adjacent shifting pin so as to lock the output plate at a first position, the second limiting peripheral edge of the first shifting plate extending from one end of the opening of the first shifting plate far away from the rotation axis is abutted to the adjacent limiting pin so as to move the output plate to a second position and prevent the output plate from rotating in a second direction opposite to the first direction, and the second limiting peripheral edge of the second shifting plate extending from one end of the opening of the second shifting plate far away from the rotation axis is abutted to the adjacent limiting pin so as to move the output plate to a third position and prevent the output plate from rotating in the first direction at the third position.

Inventors

  • YOU HAORAN
  • ZHU ZHICAI
  • ZHAO HELONG

Assignees

  • 库柏爱迪生(平顶山)电子科技有限公司

Dates

Publication Date
20260508
Application Date
20210220

Claims (9)

  1. 1. A three-position operating mechanism (1) mounted to a base (2) and comprising: an output plate (112) rotatably connected to the base (2) and having thereon two setting pins located on both sides of the rotation axis thereof; Two poking plates rotatably connected to the base (2) and distributed on both sides of the rotation axis, each poking plate being provided with an opening for engaging a corresponding poking pin; The three-station operating mechanism (1) is characterized by further comprising: two limit pins arranged on the output plate (112) and located on both sides of the rotation axis; wherein a first limiting peripheral edge of each shifting plate extending from one end of each opening close to the rotation axis is abutted to an adjacent shifting pin, so that the output plate (112) is locked at a first position; a first one of the two paddles is configured to rotate the output plate (112) in a first direction when engaging an adjacent paddle pin until a second limit periphery of the first paddle extending from an end of the first paddle opening away from the axis of rotation abuts the adjacent limit pin to move the output plate (112) to a second position and prevent rotation of the output plate (112) in a second direction opposite the first direction at the second position; A second one of the paddles is configured to rotate the output plate (112) in a second direction when engaging an adjacent paddle pin until a second limit periphery of the second paddle extending from an end of the second paddle opening away from the axis of rotation abuts the adjacent limit pin to move the output plate (112) to a third position and prevent rotation of the output plate (112) in the first direction at the third position.
  2. 2. Three-position operating mechanism (1) according to claim 1, characterized in that the second limiting peripheral edge of each dial has a radius of rotation greater than the radius of rotation of its first limiting peripheral edge.
  3. 3. Three-position operating mechanism (1) according to claim 2, characterized in that the turning radius of the poking pin is greater than the turning radius of the limiting pin.
  4. 4. A three-position operating mechanism (1) according to claim 3, wherein the first toggle plate rotates with a rotational torque in a first direction and engages an adjacent toggle pin to drive the output plate (112) to rotate in the first direction until a second limit periphery of the first toggle plate abuts the adjacent toggle pin, the second limit periphery of the first toggle plate being configured to resist rebound movement of the output plate (112) in a second direction, wherein the torque applied by the toggle pin to the first toggle plate is zero or the torque in the first direction.
  5. 5. The three-position operating mechanism (1) of claim 4, wherein the second toggle plate rotates with a second directional rotational torque and engages an adjacent toggle pin to drive the output plate (112) to rotate in the second direction until a second limit periphery of the second toggle plate abuts the adjacent toggle pin, the second limit periphery of the second toggle plate being configured to resist rebound movement of the output plate (112) in the first direction, wherein the torque applied by the toggle pin to the second toggle plate is zero or a second directional torque.
  6. 6. Three-position operating mechanism (1) according to claim 1, characterized in that the opening of each dial is of a size greater than the outer diameter of the adjacent dial pin.
  7. 7. The three-position operating mechanism (1) of claim 1, wherein each of the shift pins is rotatably connected to the output plate (112).
  8. 8. A switchgear, characterized in that it comprises a base (2) and a three-position operating mechanism (1) according to any one of claims 1 to 7 mounted to the base (2).
  9. 9. The switching device according to claim 8, wherein the base (2) is configured as two substrates that are opposed at intervals, and a stopper post is used to connect the two substrates to hold the two substrates in an opposed state at intervals.

Description

Three-station operating mechanism and switch equipment with same Technical Field The invention relates to the technical field of electrical equipment, in particular to a three-station operating mechanism and switching equipment with the same. Background With the recent development of miniaturization and recombination of important electric products such as switching devices in electric power systems, three-position operating mechanisms have been widely used in switch cabinets with the advantages of small size, compact structure, high degree of recombination, and the like. The three-station operating mechanism can be switched among three working positions, namely a closing position, an isolating position and a grounding position, so as to ensure that electric operation can be safely and stably operated. However, in the prior art, when the three-position operating mechanism is moved to each position, it is generally necessary to provide additional locking and unlocking structures within the mechanism to lock or unlock the three-position operating mechanism in or from that position, which obviously has the problems of relatively complex structure, relatively large number of parts required, and relatively high cost. There is therefore a need in the art for a three-position operating mechanism that is simpler in construction, requires a smaller number of parts, and is less costly. Disclosure of Invention The present invention aims to provide a three-position operating mechanism which at least solves some of the problems described above. The invention also aims to provide a switching device applying the improved three-position operating mechanism. According to one aspect of the invention there is provided a three-position operating mechanism mounted to a base and comprising an output plate rotatably connected to the base and having two toggle pins located on either side of its axis of rotation, two toggle plates rotatably connected to the base and distributed on either side of the axis of rotation, each toggle plate being provided with an opening for engaging a corresponding toggle pin, the three-position operating mechanism further comprising two limit pins disposed on the output plate and located on either side of the axis of rotation, wherein a first limit periphery of each toggle plate extending from an end of the respective opening adjacent to the axis of rotation abuts an adjacent toggle pin to lock the output plate in a first position, a first one of the two toggle plates being configured to enable rotation of the output plate in a first direction when engaging an adjacent toggle pin until a second limit periphery of the first toggle plate extending from an end of the first toggle plate remote from the axis of rotation abuts an adjacent limit pin to move the output plate to the second limit periphery when the first toggle plate extends from the opening to the second position and is prevented from moving from the second position to the second limit plate in a second position when the first toggle plate is prevented from moving from the second position to the second limit plate is configured to be moved to the second position adjacent to the second limit plate when the first toggle plate is engaged to the second position. Compared with the prior art, the three-station operating mechanism can move the output plate between three positions and limit the output plate at any position by skillfully designing the position relationship between the outer periphery of the shifting plate and the shifting pin and the limiting pin on the output plate, and compared with the prior art, the three-station operating mechanism has the advantages that a whole set of locking and unlocking device is added independently, the number of required parts is greatly reduced, and the required manufacturing cost is correspondingly reduced. Preferably, the rotation radius of the second limiting peripheral edge of each shifting plate is larger than that of the first limiting peripheral edge of each shifting plate. Preferably, the rotation radius of the poking pin is larger than that of the limiting pin. Preferably, the first toggle plate rotates with a rotational torque in a first direction and engages an adjacent toggle pin to drive the output plate to rotate in the first direction until a second limit periphery of the first toggle plate abuts the adjacent limit pin, the second limit periphery of the first toggle plate being configured to resist rebound movement of the output plate in a second direction, wherein the torque applied by the limit pin to the first toggle plate is zero or the torque in the first direction. Preferably, the second toggle plate rotates with a rotational moment in a second direction and engages an adjacent toggle pin to drive the output plate to rotate in the second direction until a second limit periphery of the second toggle plate abuts the adjacent limit pin, the second limit periphery of the second toggle plate