CN115188623A

CN115188623A - Operating mechanism and switch

Info

Publication number: CN115188623A
Application number: CN202110353945.1A
Authority: CN
Inventors: 徐大胜; 雷鸿健; 秦治斌
Original assignee: Shanghai Chint Intelligent Technology Co Ltd
Current assignee: Shanghai Chint Intelligent Technology Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2022-10-14

Abstract

The invention relates to the field of low-voltage electric appliances, in particular to an operating mechanism, wherein an operating shaft, a rotating cam and a transmission shaft of the operating mechanism are sequentially in driving fit; the operating shaft rotates to drive the operating mechanism to switch between a switching-on position and a switching-off position; the rotating cam is arranged in a rotating mode, and a first free stroke is arranged between the rotating cam and the operating shaft, so that the rotating cam can rotate relative to the operating shaft; the transmission shaft is arranged in a rotating manner, and a second free stroke is arranged between the transmission shaft and the rotating cam, so that the rotating cam can rotate relative to the transmission shaft; the energy storage spring is matched with the rotating cam, the energy storage spring is positioned at a first position or a second position when the operating mechanism is positioned at a switching-on position or a switching-off position, and the energy storage spring passes through a first dead point position when switching between the first position and the second position; the operating shaft and the rotating axis of the rotating cam are arranged in parallel at intervals; the operating mechanism can effectively reduce the operating force. The invention also relates to a switch comprising the operating mechanism, which has good breaking performance and is simple and convenient to operate.

Description

Operating mechanism and switch

Technical Field

The invention relates to the field of low-voltage electric appliances, in particular to an operating mechanism and a switch comprising the operating mechanism.

Background

In a low-voltage distribution system, the connection and disconnection of a circuit are usually realized through an isolating switch; in the isolating switch, an operating mechanism is an important component, and an operator drives the operating mechanism to act in a manual or electric mode so as to drive a moving contact mechanism of a contact system to act to switch on and off a circuit; the existing operating mechanism has the problems of large operating force and the like.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an operating mechanism which can effectively reduce the operating force; the switch comprises the operating mechanism, and is good in breaking performance and simple and convenient to operate.

In order to achieve the purpose, the invention adopts the following technical scheme:

an operating mechanism comprises a base, an energy storage spring, an operating shaft, a rotating cam and a transmission shaft, wherein the energy storage spring, the operating shaft, the rotating cam and the transmission shaft are arranged on the base; the operating shaft rotates to drive the operating mechanism to switch between a switching-on position and a switching-off position; the rotating cam is arranged in a rotating mode, and a first free stroke is arranged between the rotating cam and the operating shaft, so that the rotating cam can rotate relative to the operating shaft; the transmission shaft is arranged in a rotating manner, and a second free stroke is arranged between the transmission shaft and the rotating cam, so that the rotating cam can rotate relative to the transmission shaft; the energy storage spring is matched with the rotating cam, the energy storage spring is located at a first position or a second position when the operating mechanism is located at a switching-on position or a switching-off position, and the energy storage spring passes through a first dead point position when being switched between the first position and the second position; the operating shaft and the rotating axis of the rotating cam are arranged in parallel at intervals.

Preferably, the operating shaft includes an operating shaft driving part, and the rotating cam includes a first cam side and a second cam side; the operating shaft rotates to drive the operating shaft driving part to swing, and the operating shaft driving part drives the rotating cam to rotate through the side surface of the second cam or the side surface of the first cam.

Preferably, the rotating cam includes a cam driven groove, the first cam side surface and the second cam side surface are a pair of side surfaces of the cam driven groove, and the operating shaft driving portion is disposed to protrude in a radial direction of the operating shaft and extends into the cam driven groove.

Preferably, the first cam side surface and the second cam side surface each extend in a radial direction of the rotating cam.

Preferably, the operating shaft driving part comprises a driving wheel, and the operating shaft driving part is respectively in driving fit with the first cam side surface and the second cam side surface through the driving wheel.

Preferably, the operating shaft comprises an operating shaft body, a driving wheel and a driving wheel shaft; the operation axis body rotates and sets up, and it includes the axis body main part and sets up the drive wheel support in the radial one side of axis body main part, and the drive wheel passes through the driving wheel shaft and rotates the setting on the drive wheel supports, and the axis of rotation parallel interval of drive wheel and operation axle sets up.

Preferably, the rotating cam comprises a third cam side surface and a fourth cam side surface, the transmission shaft comprises a transmission shaft boss arranged between the third cam side surface and the fourth cam side surface, and the rotating cam drives the transmission shaft boss to swing through the third cam side surface or the fourth cam side surface, so that the transmission shaft rotates.

Preferably, the rotating axes of the rotating cam and the transmission shaft are overlapped, and two ends of the rotating cam are respectively matched with the operating shaft and the transmission shaft.

Preferably, the operating shaft rotates and drives the rotating cam to rotate, so that the energy storage spring reaches the first dead point position from the first position or the second position and stores energy, the rotating cam rotates through a second free stroke relative to the transmission shaft, the operating shaft continues to drive the rotating cam to rotate, so that the energy storage spring moves through the first dead point position, and then the energy storage spring releases energy to drive the rotating cam to rotate through the first free stroke relative to the operating shaft and drive the transmission shaft to rotate.

Preferably, the operating mechanism further comprises an indicating structure for indicating the switching-on/off state of the operating mechanism, and the indicating structure comprises a transmission bracket in driving fit with the rotating cam; when the operating mechanism is switched to a switching-on position, the rotating cam drives the transmission bracket to move to a first indicating position, and when the operating mechanism is switched to a switching-off position, the transmission bracket resets to a second indicating position.

Preferably, the indicating structure further comprises a support reset spring, and when the operating mechanism is switched to the brake separating position, the support reset spring drives the transmission support to reset to the second indicating position.

Preferably, the indicating structure further comprises a microswitch, and the microswitch is triggered when the transmission bracket moves to the first indicating position and/or the first indicating position.

Preferably, the base includes the base spout, and the transmission support slides and sets up in the base spout.

Preferably, base spout one end is equipped with the spacing lateral wall of support, and when transmission support was located the second instruction position, the support reset spring of instruction structure made the spacing cooperation of transmission support and the spacing lateral wall of support.

Preferably, the base comprises a first base beam and a second base beam which are arranged side by side at intervals, the base chute is divided into two sections, one section is arranged on the first base beam, and the other section is arranged on the second base beam; the rotating cam, the transmission shaft and the energy storage spring are located on one side of the first base cross beam and one side of the second base cross beam, and the transmission support is arranged on the other side of the first base cross beam and the other side of the second base cross beam.

Preferably, the base is provided with a first stroke limiting structure for limiting the rotation stroke of the operating shaft, and the first stroke limiting structure comprises a first positioning side surface and a second positioning side surface which are respectively in limit fit with the driving part of the operating shaft.

Preferably, the first stroke limiting structure is an operating shaft assembly groove formed in the first base cross member of the base, one end of the operating shaft is rotatably disposed on a bottom wall of the operating shaft assembly groove, and the first positioning side face and the second positioning side face are a pair of side faces of the operating shaft assembly groove, which are oppositely disposed.

Preferably, the operating mechanism further comprises a casing which is matched with the base relatively, the casing is provided with an operating shaft sleeve which is coaxial with the operating shaft, and the middle part of the operating shaft sleeve is provided with an operating shaft sleeve hole for the operating shaft to pass through.

Preferably, the base is a square box type structure with an opening on one side, and comprises a first base beam and a second base beam, wherein the first base beam and the second base beam are arranged on one side of the opening of the base at intervals side by side and are arranged opposite to the bottom wall of the base, the transmission shaft is arranged on the bottom wall of the base in a rotating mode, the rotating cam is arranged on the transmission shaft in a coaxial mode with the transmission shaft, the rotating cam is arranged on the transmission shaft in a rotating mode, one end of the operating shaft is arranged on the first base beam in a pivoting mode, the two energy storage springs are symmetrically distributed on two sides of the rotating cam, one energy storage spring is arranged between the bottom wall of the first base beam and the bottom wall of the base, the other energy storage spring is arranged between the bottom wall of the second base beam and the bottom wall of the base, the transmission support is arranged on one side of the first base beam and the second base beam in a sliding mode, and the energy storage springs are arranged on two sides of the first base beam respectively.

A switch, characterized in that it comprises said operating mechanism; the switch also comprises a contact system, the contact system comprises a moving contact mechanism and a fixed contact which are matched with each other, and the operating mechanism is connected with the moving contact mechanism in a driving mode through a transmission shaft.

The operating mechanism can realize rapid switching-off or switching-on operation, the rotating axis of the operating shaft is not parallel to the rotating axis of the rotating cam, the force arm of the operating shaft can be increased, the effective rotating angle of the operating shaft can be increased, and the operating force can be reduced.

In addition, the driving wheel rotates in the process of being matched with the side surface of the first cam or the side surface of the second cam, so that the friction force between the driving wheel and the side surface of the first cam or the side surface of the second cam is reduced, and the stable and smooth work of the operating mechanism is guaranteed.

The switch comprises the operating mechanism, can realize rapid switching-off and switching-on operations, and is favorable for improving the breaking capacity of the switch and reducing the operating force.

Drawings

FIG. 1 is a schematic structural view of the operating mechanism of the present invention in the open position;

FIG. 2 is a schematic view of the operating mechanism of the present invention with the stored energy spring in a first dead center position;

FIG. 3 is a schematic structural diagram of the operating mechanism of the present invention, wherein the operating shaft drives the rotating cam to rotate, such that the stored energy spring drives the rotating cam to rotate through a first free stroke relative to the operating shaft after the stored energy spring rotates through a first dead point position;

FIG. 4 is a schematic structural view of the operating mechanism of the present invention in the on position;

FIG. 5 is an exploded view of the operating mechanism of the present invention;

FIG. 6 is a schematic view of the base of the present invention;

FIG. 7 is a schematic structural view of a propeller shaft of the present invention, showing the structure of the side thereof engaged with a rotating cam;

FIG. 8 is a schematic structural view of a propeller shaft of the present invention, showing the structure of the other side thereof;

FIG. 9 is a schematic view showing the construction of a rotating cam of the present invention, showing the construction of the side thereof engaged with the operating shaft;

FIG. 10 is a schematic view of the construction of a rotating cam of the present invention, showing the construction of the side thereof engaged with a drive shaft;

FIG. 11 is a schematic view of the construction of the operating shaft of the present invention;

FIG. 12 is a schematic view of the stored energy spring of the present invention;

FIG. 13 is a schematic structural view of the drive bracket of the present invention;

FIG. 14 is a schematic structural view of the housing of the present invention;

fig. 15 is a schematic view of the microswitch of the invention.

Detailed Description

The following description of the embodiments of the operating mechanism and the switch of the present invention will be made in conjunction with the embodiments shown in fig. 1 to 15. The operating mechanism and the switch of the present invention are not limited to the description of the following embodiments.

As shown in fig. 1-5, the present invention discloses an operating mechanism, which comprises a base 1, and an energy storage spring 5, an operating shaft 4, a rotating cam 3 and a transmission shaft 2 which are arranged on the base 1, wherein the operating shaft 4, the rotating cam 3 and the transmission shaft 2 are sequentially in driving fit, and the transmission shaft 2 is used for driving a moving contact mechanism of a contact system; the operating shaft 4 rotates to drive the operating mechanism to switch between a switching-on position and a switching-off position; the rotating cam 3 is arranged in a rotating mode, and a first free stroke is arranged between the rotating cam 3 and the operating shaft 4, so that the rotating cam 3 can rotate relative to the operating shaft 4; the transmission shaft 2 is arranged in a rotating mode, and a second free stroke is arranged between the transmission shaft 2 and the rotating cam 3, so that the rotating cam 3 can rotate relative to the transmission shaft 2; the energy storage spring 5 is matched with the rotating cam 3, the energy storage spring 5 is located at a first position or a second position at a switching-on position or a switching-off position of the operating mechanism, and the energy storage spring 5 passes through a first dead point position when being switched between the first position and the second position and is used for driving the rotating cam 3 to rotate in an accelerating manner; the rotation axis of the operating shaft 4 is arranged in parallel with and spaced from the rotation axis of the rotating cam 3.

The operating mechanism can realize rapid switching-off or switching-on operation, the rotating axis of the operating shaft 4 is not parallel to the rotating axis of the rotating cam 3, the force arm of the operating shaft 4 can be increased, the effective rotating angle of the operating shaft 4 can be increased (the effective rotating angle of the operating shaft refers to the angle of the rotating cam driven by the operating shaft to rotate the energy storage spring), and the operating force can be reduced.

The invention also discloses a switch, which comprises the operating mechanism and a contact system, wherein the contact system comprises a moving contact mechanism and a static contact which are matched for use, the operating mechanism is connected with the moving contact mechanism in a driving way through a transmission shaft 2, and the moving contact mechanism is driven to rotate so as to be closed or disconnected with the static contact.

The operating mechanism and the switch of the present invention will be further described with reference to the following detailed description and the accompanying drawings.

As shown in fig. 1 to 15, the operation mechanism of the present embodiment is preferably an operation mechanism of a disconnecting switch, which is a specific embodiment of the operation mechanism of the present invention.

As shown in fig. 1-5, the operating mechanism of the present embodiment includes a base 1, and an energy storage spring 5, an operating shaft 4, a rotating cam 3 and a transmission shaft 2 which are arranged on the base 1, wherein the operating shaft 4, the rotating cam 3 and the transmission shaft 2 are sequentially in driving cooperation, and the transmission shaft 2 is used for driving a moving contact mechanism of a contact system; the operating shaft 4 rotates to drive the operating mechanism to switch between a switching-on position and a switching-off position; the rotating cam 3 is arranged in a rotating mode, and a first free stroke is arranged between the rotating cam 3 and the operating shaft 4, so that the rotating cam 3 can rotate relative to the operating shaft 4; the transmission shaft 2 is arranged in a rotating mode, and a second free stroke is arranged between the transmission shaft 2 and the rotating cam 3, so that the rotating cam 3 can rotate relative to the transmission shaft 2; the energy storage spring 5 is matched with the rotating cam 3, the energy storage spring 5 is located at a first position or a second position when the operating mechanism is located at a switching-on position or a switching-off position, when the energy storage spring 5 is switched between the first position and the second position, the energy storage spring is compressed and stored energy before passing through the first dead center position, the first dead center position is the position where the compressed energy storage is the largest, and the energy is released after passing through the first dead center position and is used for driving the rotating cam 3 to rotate in an accelerating mode.

Preferably, as shown in fig. 1-5, the operating shaft 4 and the transmission shaft 2 are respectively rotatably disposed on the base 1, the rotating cam 3 is rotatably disposed on the transmission shaft 2, and two ends of the energy storage spring 5 are respectively engaged with the rotating cam 3 and the base 1. Further, as shown in fig. 6, the base 1 is provided with a transmission shaft assembly hole 11, and the transmission shaft 2 is rotatably disposed in the transmission shaft assembly hole 11. Of course, the rotating cam 3 may be rotatably provided on the base 1.

Preferably, as shown in fig. 1 to 4, the operating shaft 4 rotates (for example, the operating shaft 4 is rotated by a manual operation of an operator or by an operation of an electric mechanism) and drives the rotating cam 3 to rotate, so that the energy storage spring 5 reaches a first dead point position from a first position or a second position and stores energy, and at the same time, the rotating cam 3 rotates relative to the transmission shaft 2 by a second free stroke, which means that the rotating cam 3 is not limited to the transmission shaft 2 during the stroke, the rotation of the rotating cam 3 does not drive the transmission shaft 2 to rotate, after the operating shaft 4 continues to drive the rotating cam 3 to rotate so that the energy storage spring 5 passes through the first dead point, the energy storage spring 5 releases energy, the energy storage spring 5 drives the rotating cam 3 to rotate relative to the operating shaft 4 by the first free stroke, and simultaneously drives the transmission shaft 2 to rotate in an accelerated manner to drive the transmission shaft mechanism to achieve rapid closing and opening of the brake, the second free stroke is a section of idle stroke, and during the idle stroke, the rotating cam 3 is not limited to drive the moving contact to rotate the operating shaft 4. Further, as shown in fig. 2, when the charging spring 5 is located at the first dead point position, both ends thereof and the rotation center of the rotating cam 3 are located on the same straight line. Further, as shown in fig. 1 to 5 and 12, the charge spring 5 is a linear compression spring, and when it is located at the first dead center position, the axis of the charge spring 5 coincides with the rotation center of the rotating cam 3. Of course, the energy storage spring 5 may also be a torsion spring, and the connection relationship and arrangement of the energy storage spring and the rotating cam 3 can be realized by the prior art, and will not be described herein.

Preferably, as shown in fig. 1 to 5, the operating mechanism includes two energy storage springs 5 disposed at two sides of the rotating cam 3, one end of each energy storage spring 5 is respectively engaged with two radial ends of the rotating cam 3, and the other end is respectively engaged with the base 1. Further, as shown in fig. 1 to 5 and 9, one end of the energy storage spring 5 is limited in the cam spring slot 35 of the rotating cam 3, and the other end is limited in the base spring slot 12 of the base 1.

Specifically, as shown in the direction of fig. 1, the operating mechanism of this embodiment is located at the brake-separating position and the energy storage spring 5 is located at the second position, the operating shaft 4 rotates clockwise to drive the rotating cam 3 to rotate counterclockwise, the rotating cam 3 drives the energy storage spring 5 to rotate clockwise to the first dead point position (as shown in fig. 2), so that the energy storage spring 5 stores energy, during the above process, the rotating cam 3 rotates a second free stroke relative to the transmission shaft 2 (during the process, the transmission shaft 2 does not rotate), as shown in fig. 3, the operating shaft 4 continues to rotate clockwise to drive the rotating cam 3 to rotate counterclockwise, the rotating cam 3 drives the energy storage spring 5 to pass (i.e., rotate or swing through) the first dead point position, the energy storage spring 5 releases energy and drives the rotating cam 3 to rotate a first free stroke relative to the operating shaft 4, while the rotating cam 3 rotates the first free stroke, the rotating cam 3 drives the transmission shaft 2 to rotate, so as to implement fast switch-on, during the process, the operating shaft 4 does not rotate; as shown in fig. 4, the operating mechanism is switched to the closed state and the charging spring 5 reaches the first position. In the process of switching the operating mechanism from the closing state to the opening state, the above processes are opposite, as shown in fig. 4, the operating mechanism is located at the closing position, and the energy storage spring 5 is located at the first position, the operating shaft 4 rotates in the counterclockwise direction to drive the rotating cam 3 to rotate in the clockwise direction, the rotating cam 3 drives the energy storage spring 5 to rotate counterclockwise to the first dead point position, so that the energy storage spring 5 stores energy, during the above process, the rotating cam 3 rotates through the second free stroke relative to the transmission shaft 2, the transmission shaft 2 does not rotate during the process, the operating shaft 4 continues to rotate counterclockwise to drive the rotating cam 3 to continue to rotate clockwise, the rotating cam 3 drives the energy storage spring 5 to pass (i.e., rotate or swing through) the first dead point position, after the energy storage spring 5 releases energy and drives the rotating cam 3 to rotate rapidly through the first free stroke relative to the operating shaft 4, while the rotating cam 3 rotates through the first free stroke, the rotating cam 3 drives the transmission shaft 2 to rotate rapidly to implement rapid opening, and the operating shaft 4 does not rotate during the process; as shown in fig. 1, the operating mechanism is switched to the open state and the charging spring 5 reaches the second position. The first free stroke avoids the influence of the speed of an operator on the closing speed of the operating mechanism, and the second free stroke avoids the influence of a rotating cam on a contact system of the switch before an energy storage spring reaches the maximum energy storage value, so that the disconnection speed of the contact mechanism is ensured, and the disconnection performance of the switch is improved.

Preferably, as shown in fig. 1 to 5 and 12, the energy storage spring 5 is one embodiment: the energy storage spring 5 of this embodiment is a linear compression spring, and includes the spring driven end 52, the spring body 53 and the spring spacing end 51 that link to each other in proper order, and the spring driven end 52 cooperates with the cam spring slot 35 of the rotating cam 3, and the spacing end 51 of spring cooperates with the base spring slot 12 of the base 1 in a spacing manner. Further, as shown in fig. 12, the spring driven end 52 includes a spring driven rod, and the extending direction of the spring driven rod is parallel to the axial direction of the rotating cam 3; the spring limiting end 51 comprises a spring limiting rod, the extending direction of the spring limiting rod is parallel to the axis direction of the rotating cam 3, and the spring limiting rod is rotatably arranged in the base spring clamping groove 12.

Preferably, as shown in fig. 1 to 5 and 9, the operating shaft 4 is spaced parallel to (and not coincident with) the rotational axis of the rotating cam 3. Further, as shown in fig. 1 to 5 and 9, the operating shaft 4 includes an operating shaft driving portion, the operating shaft 4 is disposed at one side of the rotating cam 3, the rotating cam 3 is pushed to rotate by the operating shaft driving portion, and the rotating cam 3 includes a first cam side surface 31 and a second cam side surface 32; the operating shaft 4 rotates to drive the operating shaft driving part to swing, the operating shaft driving part is arranged in a protruding mode along the radial direction of the operating shaft 4, the protruding direction of the operating shaft driving part is perpendicular to the rotating axis of the operating shaft 4, and the operating shaft driving part drives the rotating cam 3 to rotate through the second cam side face 32 or the first cam side face 31, so that the energy storage spring 5 moves towards the first position or the second position.

Preferably, as shown in fig. 5 and 9, the rotating cam 3 includes cam follower grooves 31-32, the first cam side surface 31 and the second cam side surface 32 are a pair of side surfaces of the cam follower grooves 31-32 disposed opposite to each other, and the operating shaft driving portion of the operating shaft 4 extends into the cam follower grooves 31-32 to be engaged with the first cam side surface 31 and the second cam side surface 32, respectively. Further, as shown in fig. 5 and 9, the cam driven grooves 31-32 are V-shaped grooves, the tips of the V-shaped grooves are arranged near the axis of the rotating cam 3, and the open ends face the outer edge of the rotating wheel 3; the first cam flank 31 and the second cam flank 32 each extend in the radial direction of the rotating cam 3.

Preferably, as shown in fig. 5 and 11, the operating shaft driving part includes a driving wheel 42, and the operating shaft driving part is in driving engagement with the first cam side surface 31 and the second cam side surface 32 through the driving wheel 42. Further, as shown in fig. 5 and 11, the operating shaft 4 includes an operating shaft body 41, a driving wheel 42 and a driving wheel shaft 43, the operating shaft body 41 includes a shaft body 411 and a driving wheel support 412 disposed on one side of the shaft body 411 in the radial direction, the driving wheel 42 is rotatably disposed on the driving wheel support 412 through the driving wheel shaft 43, and the driving wheel 42 is disposed in parallel with and spaced from the rotation axis of the operating shaft 4; the operating shaft drive section comprises a drive wheel support 412 and a drive wheel 42, the drive wheel 42 being in driving engagement with the first cam side 31 and the second cam side 32, respectively. Further, as shown in fig. 11, the driving wheel support 412 includes a first driving wheel support plate 4120 and a second driving wheel support plate 4121 which are disposed at an interval, one end of each of the first driving wheel support plate 4120 and the second driving wheel support plate 4121 is connected to the shaft body 41, a driving wheel assembly gap 413 is provided therebetween, the driving wheel 42 is rotatably disposed in the driving wheel assembly gap 413, and the driving wheel 42 is rotatably connected to the first driving wheel support plate 4120 and the second driving wheel support plate 4121 through a driving wheel shaft 43. The driving wheel 42 rotates in the process of being matched with the first cam side surface 31 or the second cam side surface 32, so that the friction force between the driving wheel 42 and the first cam side surface 31 or the second cam side surface 32 is reduced, and the stable and smooth work of the operating mechanism is ensured.

As another embodiment, the operating shaft driving portion may be formed only by the driving wheel support 412, or the driving wheel support 412 may be adapted in shape and size, and then the driving wheel support 412 is slidably engaged with the first cam side surface 31 and the second cam side surface 32, respectively, to drive the rotating cam 3 to rotate.

Preferably, as shown in fig. 1 to 4 and 6, the base 1 is provided with a first stroke limiting structure 13-14 for limiting the rotation stroke of the operating shaft 4, the first stroke limiting structure 13-14 comprises a first positioning side 13 and a second positioning side 14, and the first positioning side 13 and the second positioning side 14 are respectively in limit fit with the operating shaft driving part of the operating shaft 4 to limit the rotation stroke of the operating shaft 4. Further, as shown in fig. 1, when the operating mechanism is in the brake-off position, the operating shaft driving part is in limit fit with the second positioning side surface 14; as shown in fig. 4, when the operating mechanism is in the switching-on position, the operating shaft driving part is in limit fit with the first positioning side 13, so that the swing stroke of the operating shaft driving part is limited; that is, the first positioning side surface 13 and the second positioning side surface 14 are respectively in limit fit at both ends of the swing stroke of the operating shaft driving part.

Preferably, as shown in fig. 1 to 4 and 6, the first stroke limiting structure 13 to 14 is an operating shaft fitting groove, one end of the operating shaft 4 is rotatably disposed on a bottom wall of the operating shaft fitting groove, and the first positioning side 13 and the second positioning side 14 are a pair of sides of the operating shaft fitting groove which are oppositely disposed. Further, as shown in fig. 1 to 4 and 6, the operating shaft assembly groove is a funnel-shaped groove, the operating shaft 4 is rotatably disposed on the bottom wall of the funnel-shaped groove, and the operating shaft driving part is engaged with the large-diameter end of the funnel-shaped groove. Further, as shown in fig. 1 to 6, the base 1 further comprises a first base beam 10, the operating shaft 4 is rotatably arranged on the first base beam 10, and the first stroke limiting structures 13 to 14 are arranged on the first base beam 10.

Preferably, as shown in fig. 5 and 14, the operating mechanism of the present embodiment further includes a housing 8 which is matched with the base 1, the housing 8 is provided with an operating shaft sleeve 81 which is arranged coaxially with the operating shaft 4, and an operating shaft sleeve hole 810 through which the operating shaft 4 passes is arranged in the middle of the operating shaft sleeve 81. Casing 8 and base 1 carry on spacingly to the both ends of operating shaft 4 respectively, have guaranteed the reliable stable work of operating shaft 4, are favorable to prolonging operating device's life. It should be noted that, as shown in fig. 1 to 5, the free end of the operating shaft 4 is provided with an operating shaft insertion hole, the operating shaft insertion hole is of a polygonal structure, and an operator can use a crank to insert into the operating shaft insertion hole to drive the operating shaft 4 to rotate; alternatively, the operating shaft insertion hole may be engaged with an output shaft of an electric mechanism to drive the operating shaft 4 to rotate.

Specifically, as shown in fig. 1 to 5 and 14, one end of the operating shaft body 41 of the operating shaft 4 is rotatably disposed in the operating shaft mounting groove of the first base cross member 10, and the other end is inserted in the operating shaft sleeve hole 810 of the operating shaft sleeve 81.

Preferably, as shown in fig. 10, the rotating cam 3 further includes a third cam side 33 and a fourth cam side 34; as shown in fig. 7, the drive shaft 2 includes a drive shaft boss 24 interposed between the third cam side surface 33 and the fourth cam side surface 34; after the rotating cam 3 rotates through the second free stroke, the third cam side 33 or the fourth cam side 34 drives the transmission shaft boss 24 to swing, so that the transmission shaft 2 rotates. Further, as shown in fig. 5, the rotation axes of the rotating cam 3 and the transmission shaft 2 are coincident, and both ends of the rotating cam 3 are respectively matched with the operating shaft 4 and the transmission shaft 2.

Preferably, as shown in fig. 10, the rotating cam 3 further includes a first annular table 39 and a second annular table 38 coaxial with the first annular table 39, the second annular table 38 is sleeved outside the first annular table 39, a first boss shaft hole 390 coaxial with the first annular table 39 is provided in the middle of the first annular table 39, the first annular table 38 is provided with a first notch (the first notch enables the first annular table 38 to be in a C-shaped structure), and two opposite side surfaces of the first notch are a third cam side surface 33 and a fourth cam side surface 34 respectively; as shown in fig. 7, the transmission shaft 2 includes a third annular table 23 and a transmission shaft main shaft 24 coaxially arranged with the third annular table, the transmission shaft main shaft 24 is arranged in the middle of the third annular table 23, and a transmission shaft boss 24 is arranged at the outer edge of the third annular table 23; the second annular table 38, the third annular table 23 and the first annular table 39 are sequentially sleeved from outside to inside, and the transmission shaft main shaft 24 is inserted into the first boss shaft hole 390, so that the rotation axes of the rotating cam 3 and the transmission shaft 2 are overlapped. This embodiment is a preferred embodiment of the present invention, so that the whole structure of the operating mechanism is simple and compact, and of course, as another embodiment, the rotation axis of the transmission shaft 2 may be parallel to the rotation axis of the rotating cam 3 and located on the side of the rotation axis of the rotating cam 3, and the transmission shaft main shaft 24 extends into the first notch along the radial protrusion of the transmission shaft 2.

Specifically, as shown in fig. 5 and 7 to 10, the first cam side surface 31 and the second cam side surface 32 are disposed at one end (the end engaged with the operating shaft 4) of the rotating cam 3, and the third cam side surface 33, the fourth cam side surface 34, the first annular land 39, and the second annular land 38 are disposed at the other end (the end engaged with the transmission shaft 2) of the rotating cam 3.

Preferably, as shown in fig. 5, one end of the transmission shaft 2 is rotatably disposed in the transmission shaft assembly hole 11 of the base 1. Further, as shown in fig. 7 and 8, the transmission shaft 2 includes a transmission shaft output portion 21 and a transmission shaft annular stop 22, the transmission shaft output portion 21 is rotatably disposed in the transmission shaft assembly hole 11 to output switching power outwards, and the transmission shaft annular stop 22 is in spacing fit with the outer side of the transmission shaft assembly hole 11 to prevent the transmission shaft 2 from coming off from the transmission shaft assembly hole 11.

As shown in fig. 7 and 8, an embodiment of the drive shaft 2 is: the transmission shaft 2 of the embodiment is of a cylindrical structure, one axial end of the transmission shaft is a third annular table 23, the other axial end of the transmission shaft is a transmission shaft output part 21, the middle part of the transmission shaft is provided with a transmission shaft annular baffle table 22, the third annular table 23, the transmission shaft output part 21 and the transmission shaft annular baffle table 22 are arranged coaxially with the transmission shaft 2, and the outer diameter of the transmission shaft annular baffle table 22 is larger than that of the transmission shaft output part 21; as shown in fig. 7, a transmission shaft spindle 24 coaxial with the third annular table 23 is arranged in the middle of the third annular table, and a transmission shaft boss 24 is arranged at the outer edge of the third annular table. As shown in fig. 8, the other axial end of the transmission shaft 2 is provided with a transmission shaft hole 25 for outputting the opening and closing power outwards. Further, as shown in fig. 8, the transmission shaft hole 25 is a cross-shaped hole.

Preferably, as shown in fig. 1-5 and 13, the operating mechanism of the present embodiment further includes an indicating structure for indicating the switching on/off state of the operating mechanism, and the indicating structure includes a transmission bracket 6 in driving fit with the rotating cam 3; as shown in fig. 4, when the operating mechanism is switched to the switching-on position, the rotating cam 3 drives the transmission bracket 6 to move to the first indicating position; as shown in fig. 1, when the operating mechanism is switched to the brake-off position, the transmission bracket 6 is reset to the second indicating position. Further, as shown in fig. 9, the rotating cam 3 further includes a fifth cam side 37; as shown in fig. 13, the transmission bracket 6 includes a transmission bracket stop lever 62; as shown in fig. 4, when the operating mechanism is switched to the on position, the rotating cam 3 rotates, so that the fifth cam side 37 drives the transmission bracket 6 to move to the first indicating position through the transmission bracket stop lever 62.

As shown in fig. 9 and 10, one embodiment of the rotating cam 3 is: the rotating cam 3 of the present embodiment is of a cylindrical structure; as shown in fig. 9, one axial side of the rotating cam 3 is provided with cam driven grooves 31-32, a first cam side surface 31, a second cam side surface 32 and a fifth cam side surface 37, a pair of oppositely-arranged side surfaces of the cam driven grooves 31-32 are respectively the first cam side surface 31 and the second cam side surface 32, the fifth cam side surface 37, the first cam side surface 31 and the second cam side surface 32 are sequentially arranged along the circumferential direction of the rotating cam 3, and the fifth cam side surface 37 and the first cam side surface 31 are respectively located at two sides of one side wall of the cam driven grooves 31-32; as shown in fig. 9 and 10, two radial ends of the rotating cam 3 are respectively provided with a cam spring slot 35; as shown in fig. 10, the other axial side of the rotating cam 3 is provided with a first annular table 39, a second annular table 38, a third cam side surface 33, a fourth cam side surface 34 and a first boss shaft hole 390, the first annular table 39, the second annular table 38 and the rotating cam 3 are coaxially arranged, the second annular table 38 is sleeved outside the first annular table 39, the first boss shaft hole 390 is arranged in the middle of the first annular table 39, the first annular table 38 is provided with a first notch, and two opposite side surfaces of the first notch are the third cam side surface 33 and the fourth cam side surface 34 respectively.

Preferably, as shown in fig. 1 to 4, the indicating structure further comprises a support return spring 7, and when the operating mechanism is switched to the brake-off position, the support return spring 7 drives the transmission support 6 to return to the second indicating position. Further, as shown in fig. 4, when the operating mechanism is switched on, the rotating cam 3 drives the transmission bracket 6 to move to the first indication position, and the bracket return spring 7 is compressed to store energy; as shown in figure 1, when the operating mechanism is switched off, the rotating cam 3 releases the transmission bracket 6, the bracket return spring 7 relaxes to release energy and drive the transmission bracket 6 to return to the second indicating position. Specifically, as shown in the direction of fig. 4, when the operating mechanism is switched to the switching-on position, the rotating cam 3 rotates counterclockwise to drive the transmission bracket 6 to move downward to the first indicating position, so that the bracket return spring 7 is compressed to store energy; when the operating mechanism is switched to the brake separating position, the rotating cam 3 rotates clockwise to release the transmission bracket 6, and the bracket return spring 7 relaxes to drive the transmission bracket 6 to move upwards to the second indicating position as shown in the direction of figure 1. Certainly, the support return spring 7 may also be a tension spring or a torsion spring, when the operating mechanism is switched to the switching-on position, the rotating cam 3 is matched with the transmission support stop lever 62 through the fifth cam side surface 37 to drive the transmission support 6 to move to the first indication position, meanwhile, the support return spring 7 stores energy, and when the operating mechanism is switched to the switching-off position, the support return spring 7 releases energy and drives the transmission support 6 to return to the second indication position.

Preferably, as shown in fig. 1 to 5, the transmission bracket 6 is slidably disposed on the base 1. Further, as shown in fig. 6, the base 1 includes a base sliding groove 15, and the transmission bracket 6 is slidably disposed in the base sliding groove 15. Further, as shown in fig. 6, a bracket limiting side wall 17 is arranged at one end of the base sliding groove 15; as shown in fig. 13, the transmission bracket 6 includes a bracket limit foot 64; as shown in fig. 1, when the transmission bracket 6 is located at the second indication position, the bracket return spring 7 enables the bracket limit foot 64 to be in limit fit with the bracket limit side wall 17.

Preferably, as shown in fig. 1 to 6, the base 1 further includes a second base beam 19, the second base beam 19 and the first base beam 10 are arranged side by side at an interval, the base chute 15 is divided into two sections and respectively arranged on the first base beam 10 and the second base beam 19, the bracket limiting side wall 17 is arranged at one end of the base chute 15 far away from the first base beam 10, and two ends of the bracket return spring 7 are respectively in limiting fit with the transmission bracket stop lever 62 of the transmission bracket 6 and the second base beam 19. Further, as shown in fig. 6, a beam spring limiting column 16 is arranged on the second base beam 19; as shown in fig. 13, a support spring limiting post 63 is arranged on the transmission support stop lever 62; one end of the support reset spring 7 is sleeved on the cross beam spring limiting column 16, and the other end of the support reset spring is sleeved on the support spring limiting column 63.

Preferably, as shown in fig. 15, the indicating structure further comprises a microswitch 9, and the microswitch 9 is triggered when the transmission bracket 6 moves to the first indicating position and/or the first indicating position. Further, as shown in fig. 15, the microswitch 9 comprises a push rod 93, the transmission bracket 6 comprises bracket driving parts 65-66, and the bracket driving parts 65-66 are in driving fit with the push rod 93.

The first matching mode of the transmission bracket 6 and the microswitch 9 is as follows: as shown in fig. 4, when the operating mechanism is switched to the switching-on position, the transmission bracket 6 is located at the first indicating position, the bracket driving parts 65 to 66 release the push rod 93, and the micro switch 9 does not output an electric signal; as shown in fig. 2, when the operating mechanism is switched to the opening position, the transmission bracket 6 is located at the second indicating position, the bracket driving parts 65 to 66 press against the push rod 93, and the micro switch 9 outputs an electric signal, so that when the operating mechanism is switched between the opening position and the closing position, the state (for example, two states of closing and opening) of the micro switch 9 is changed, so as to change the signal output by the micro switch 9, so as to indicate the opening and closing state of the operating mechanism.

The second matching mode of the transmission bracket 6 and the microswitch 9 is as follows: when the microswitch 6 is positioned at the first indication position, the microswitch 9 is triggered, so that the microswitch 9 outputs a first electric signal; when the microswitch 6 is positioned at the second indication position, the microswitch 9 is triggered, so that the microswitch 9 outputs a second electric signal, and the output signal of the microswitch 9 is changed to indicate the opening and closing state of the operating mechanism.

Preferably, as shown in fig. 13, the bracket driving portion 65-66 includes a driving portion inclined surface 65 and a driving portion flat surface 66, which are sequentially arranged, and when the operating mechanism is switched from the open position to the closed position, the driving portion inclined surface 65 contacts the push rod 93 before the driving portion flat surface 66. Further, during the process of switching the operating mechanism from the opening position to the closing position, the driving portion inclined surface 65 and the driving portion flat surface 66 are sequentially in sliding contact with the push rod 93. Further, when the operating mechanism is located at the brake separating position, the inclined surface 65 of the driving part is opposite to the ejector rod 93, and the microswitch 9 is not triggered; when the operating mechanism is located at the switching-on position, the driving plane 66 presses against the ejector rod 93 to trigger the microswitch 9.

Preferably, as shown in fig. 5 and 14, the housing 8 includes a microswitch mounting structure including a microswitch mounting groove 82 provided in a central portion thereof for receiving and securing the microswitch 9. Further, as shown in fig. 5 and 14, the microswitch assembly structure and the transmission bracket 6 are respectively located at two sides of the bottom wall of the housing 8, a push rod avoiding hole 83 matched with the push rod 93 is formed in the bottom wall of the housing 8, and the push rod 93 is matched with the bracket driving parts 65 to 66 after passing through the push rod avoiding hole 83. Further, as shown in fig. 14 and 15, the micro switch assembly structure includes a pair of side walls disposed at an interval and a pair of clamping arms disposed at an interval, the micro switch 9 includes a micro switch main body 90, and two ends of the external moving switch main body 90 are respectively in limit fit with the pair of clamping arms of the micro switch assembly structure.

Specifically, as shown in fig. 5, 13 and 14, the operating mechanism of the present embodiment includes two micro-switches 9, the housing 8 is provided with two micro-switch assembling structures and two push rod avoiding holes 83, and the transmission bracket 6 is provided with two bracket driving portions 65 to 66.

As shown in fig. 6, is an embodiment of the base 1: the base 1 of the embodiment is a square box-shaped structure with an opening on one side, and comprises a first base beam 10, a second base beam 19, base spring clamping grooves 12, a transmission shaft assembly hole 11, first stroke limiting structures 13-14, a base sliding groove 15, a support limiting side wall 17 and a support spring limiting column 63, wherein the first base beam 10 and the second base beam 19 are arranged side by side at intervals and are arranged opposite to the bottom wall of the base 1 at intervals, the transmission shaft assembly hole 11 is arranged in the middle of the bottom wall of the base 1, the two base spring clamping grooves 12 are symmetrically distributed on two sides of the transmission shaft assembly hole 11 and are arranged at two ends of the base 1, the first base beam 10 is arranged between the transmission shaft assembly hole 11 and one base spring clamping groove 12 and is perpendicular to a connecting line between the transmission shaft assembly hole 11 and the other base spring clamping groove 12, the first stroke limiting structure 13-14 is arranged in the middle of the first base beam 10, the base sliding groove 15 is divided into two sections, one section is arranged on the first base beam 10, the other section is arranged on the second base beam 19, the support spring clamping groove 17 is arranged at one end of the second base beam 19, and is arranged between the second base beam 19 and the second base beam 19. Further, as shown in fig. 6, the first stroke limiting structure 13-14 is an operating shaft mounting groove, the operating shaft 4 is rotatably disposed on the bottom wall of the operating shaft mounting groove, and the pair of oppositely spaced side surfaces of the operating shaft mounting groove are a first positioning side surface 13 and a second positioning side surface 14, respectively.

As shown in fig. 13, an embodiment of the transmission bracket 6 is: the transmission bracket 6 of the embodiment comprises a bracket main body 61, a transmission bracket stop lever 62, a bracket spring limiting column 63, a bracket limiting foot 64 and bracket driving parts 65-66, wherein the bracket main body 61 is arranged in the base sliding groove 15 in a sliding manner, the two bracket driving parts 65-66 are arranged on one side of the bracket main body 61 side by side at intervals, the bracket limiting foot 64 and the transmission bracket stop lever 62 are arranged on the other side of the bracket main body 61 side by side at intervals, and the bracket spring limiting column 63 is arranged on the transmission bracket stop lever 62 and protrudes towards the bracket limiting column 64. Further, as shown in fig. 13, the holder driving part 65-66 includes a driving part inclined surface 65 and a driving part plane 66, which are sequentially arranged, the driving part plane 66 is arranged in parallel with the holder main body 61 at an interval, and the driving part inclined surface 65 extends from the holder main body 61 to the driving part plane 66.

As shown in fig. 1 to 5, the layout of the operating mechanism of the present embodiment is as follows: first base crossbeam 10 and second base crossbeam 19 set up on base 1's opening one side at the interval side by side and set up with base 1's diapire relatively, transmission shaft 2 rotates and sets up on base 1's diapire, it sets up on transmission shaft 2 with the coaxial line setting of transmission shaft 2 and rotates

cam

3, 4 one end pivots of operating axis set up on first base crossbeam 10, two energy storage spring 5 symmetric distribution are in rotating cam 3 both sides, an energy storage spring 5 is located between first base crossbeam 10 and base 1's diapire, another energy storage spring 5 is located between second base crossbeam 19 and base 1's diapire, transmission support 6 slides and sets up in first base crossbeam 10 and second base crossbeam 19 one side, transmission support 6 and energy storage spring 5 are located the both sides of first base crossbeam 10 respectively. Specifically, as shown in the directions of fig. 1-4 and with reference to fig. 5 and 6, the upper, lower, left and right sides of fig. 1-4 are the upper, lower, left and right sides of the operating mechanism, the side of fig. 1-4 facing the reader is the front side, and the side facing away from the reader is the back side; 1 front side opening of base, first base crossbeam 10 and second base crossbeam 19 set up the front side at base 1 side by side, second base crossbeam 19 is located first base crossbeam 10 below, transmission shaft 2 rotates and sets up on the base, it sets up at 2 front sides of transmission shaft to rotate cam 3 and 2 coaxial lines of transmission shaft and rotate, transmission support 6 slides and sets up the front side at first base crossbeam 10 and

second base crossbeam

19, 4 pivots of operating axis set up in first base crossbeam 10 front side, 5 symmetric distribution of two energy storage springs are rotating 3 upsides of cam and downside.

The following is one embodiment of the switch of the present invention.

The switch of the embodiment is preferably an isolating switch, and comprises the operating mechanism and isolating chambers, wherein each isolating chamber is internally provided with a contact system, each contact system comprises a moving contact mechanism and a fixed contact which are matched with each other, and a transmission shaft 2 of the operating mechanism is connected with the moving contact mechanism in a driving way and drives the moving contact mechanism to rotate; the operating mechanism is switched to a switching-on position or a switching-off position, so that the movable contact mechanism and the static contact are switched on or off, and the isolating switch is switched on or switched off.

Preferably, the movable contact mechanism comprises a contact support and a movable contact arranged on the contact support, and the contact support comprises a contact support shaft hole; the switch of the embodiment further comprises a linkage piece, and two ends of the linkage piece are respectively matched with the transmission shaft hole 25 and the contact supporting shaft hole of the transmission shaft 2, so that the transmission shaft 2 is in driving connection with the moving contact mechanism. Further, the switch of the present embodiment includes a plurality of isolation chambers (e.g., 3 isolation chambers respectively corresponding to three phases of a three-phase power supply; or 2 isolation chambers corresponding to two phases of a two-phase power supply), the plurality of isolation chambers are arranged side by side, the contact supports of adjacent isolation chambers are linked by a transmission member, and the operating mechanism is arranged at one end of the switch and arranged side by side with the isolation chambers.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. An operating mechanism comprises a base (1), and an energy storage spring (5), an operating shaft (4), a rotating cam (3) and a transmission shaft (2) which are arranged on the base (1), wherein the operating shaft (4), the rotating cam (3) and the transmission shaft (2) are in driving fit in sequence; the operating shaft (4) rotates to drive the operating mechanism to switch between a switching-on position and a switching-off position; the rotating cam (3) is arranged in a rotating mode, a first free stroke is arranged between the rotating cam (3) and the operating shaft (4), and the rotating cam (3) can rotate relative to the operating shaft (4); the transmission shaft (2) is rotatably arranged, and a second free stroke is arranged between the transmission shaft and the rotating cam (3), so that the rotating cam (3) can rotate relative to the transmission shaft (2); the energy storage spring (5) is matched with the rotating cam (3), when the operating mechanism is located at a switching-on position or a switching-off position, the energy storage spring (5) is located at a first position or a second position, and when the energy storage spring (5) is switched between the first position and the second position, the energy storage spring passes through a first dead point position; the method is characterized in that: the operating shaft (4) and the rotating axis of the rotating cam (3) are arranged in parallel at intervals.

2. The operating mechanism of claim 1, wherein: the operating shaft (4) comprises an operating shaft driving part, and the rotating cam (3) comprises a first cam side surface (31) and a second cam side surface (32); the operating shaft 4 rotates to drive the operating shaft driving part to swing, and the operating shaft driving part drives the rotating cam (3) to rotate through the second cam side surface (32) or the first cam side surface (31).

3. The operating mechanism of claim 2, wherein: the rotating cam (3) comprises cam driven grooves (31-32), the first cam side face (31) and the second cam side face (32) are a pair of oppositely arranged side faces of the cam driven grooves (31-32), and the operating shaft driving part is arranged in a protruding mode along the radial direction of the operating shaft (4) and extends into the cam driven grooves (31-32).

4. The operating mechanism of claim 2, wherein: the first cam flank (31) and the second cam flank (32) each extend in the radial direction of the rotating cam (3).

5. The operating mechanism of claim 2, wherein: the operating shaft driving part comprises a driving wheel (42), and the operating shaft driving part is respectively in driving fit with the first cam side surface (31) and the second cam side surface (32) through the driving wheel (42).

6. The operating mechanism of claim 5, wherein: the operating shaft (4) comprises an operating shaft body (41), a driving wheel (42) and a driving wheel shaft (43); the operation axis body (41) rotates the setting, and it includes axis body main part (411) and sets up the drive wheel support (412) in the radial one side of axis body main part (411), and drive wheel (42) rotate through drive wheel axle (43) and set up on drive wheel support (412), and drive wheel (42) and the axis of rotation parallel interval of operating axis (4) set up.

7. The operating mechanism of claim 1, wherein: the rotating cam (3) comprises a third cam side surface (33) and a fourth cam side surface (34), the transmission shaft (2) comprises a transmission shaft boss (24) arranged between the third cam side surface (33) and the fourth cam side surface (34), and the rotating cam (3) drives the transmission shaft boss (24) to swing through the third cam side surface (33) or the fourth cam side surface (34) so that the transmission shaft (2) rotates.

8. The operating mechanism of claim 7, wherein: the rotating axes of the rotating cam (3) and the transmission shaft (2) are overlapped, and two ends of the rotating cam (3) are respectively matched with the operating shaft (4) and the transmission shaft (2).

9. The operating mechanism of claim 1, wherein: the operating shaft (4) rotates and drives the rotating cam (3) to rotate, so that the energy storage spring (5) reaches a first dead point position from a first position or a second position and stores energy, meanwhile, the rotating cam (3) rotates through a second free stroke relative to the transmission shaft (2), the operating shaft (4) continuously drives the rotating cam (3) to rotate, so that after the energy storage spring (5) moves through the first dead point position, the energy storage spring (5) releases energy to drive the rotating cam (3) to rotate through the first free stroke relative to the operating shaft (4), and the transmission shaft (2) is driven to rotate;

the operating mechanism also comprises an indicating structure for indicating the switching-on and switching-off states of the operating mechanism, and the indicating structure comprises a transmission bracket (6) in driving fit with the rotating cam (3); when the operating mechanism is switched to a switching-on position, the rotating cam (3) drives the transmission bracket (6) to move to a first indicating position, and when the operating mechanism is switched to a switching-off position, the transmission bracket (6) resets to a second indicating position;

the indicating structure further comprises a support reset spring (7), and when the operating mechanism is switched to the brake separating position, the support reset spring (7) drives the transmission support (6) to reset to a second indicating position;

the indicating structure further comprises a microswitch (9), and the microswitch (9) is triggered when the transmission bracket (6) moves to the first indicating position and/or the first indicating position;

the base (1) comprises a base sliding groove (15), and the transmission bracket (6) is arranged in the base sliding groove (15) in a sliding manner;

a support limiting side wall (17) is arranged at one end of the base sliding groove (15), and when the transmission support (6) is located at the second indication position, the support reset spring (7) of the indication structure enables the transmission support (6) to be in limiting fit with the support limiting side wall (17);

the base (1) comprises a first base cross beam (10) and a second base cross beam (19) which are arranged side by side at intervals, the base sliding groove (15) is divided into two sections, one section is arranged on the first base cross beam (10), and the other section is arranged on the second base cross beam (19); the rotating cam (3), the transmission shaft (2) and the energy storage spring (5) are positioned on one side of the first base cross beam (10) and one side of the second base cross beam (19), and the transmission bracket (6) is arranged on the other side of the first base cross beam (10) and the second base cross beam (19);

the base (1) is provided with a first stroke limiting structure (13-14) for limiting the rotation stroke of the operating shaft (4), and the first stroke limiting structure (13-14) comprises a first positioning side surface (13) and a second positioning side surface (14) which are respectively in limit fit with the driving part of the operating shaft;

the first stroke limiting structure (13-14) is an operating shaft assembling groove arranged on a first base cross beam (10) of the base (1), one end of the operating shaft (4) is rotatably arranged on the bottom wall of the operating shaft assembling groove, and the first positioning side surface (13) and the second positioning side surface (14) are a pair of oppositely arranged side surfaces of the operating shaft assembling groove;

the operating mechanism further comprises a shell (8) which is oppositely matched with the base (1), the shell (8) is provided with an operating shaft sleeve (81) which is coaxially arranged with the operating shaft (4), and the middle part of the operating shaft sleeve (81) is provided with an operating shaft sleeve hole (810) for the operating shaft (4) to pass through;

base (1) is one side open-ended square box type structure, including first base crossbeam (10) and second base crossbeam (19), first base crossbeam (10) and second base crossbeam (19) interval side by side set up on the opening one side of base (1) and set up with the diapire of base (1) relatively, transmission shaft (2) are rotated and are set up on the diapire of base (1), it sets up on transmission shaft (2) to rotate cam (3) and rotate cam (3) with transmission shaft (2) coaxial line setting, operating axis (4) one end pivot sets up on first base crossbeam (10), two energy storage spring (5) symmetric distribution are in rotating cam (3) both sides, one energy storage spring (5) are located between the diapire of first base crossbeam (10) and base (1), another energy storage spring (5) are located between the diapire of second base crossbeam (19) and base (1), transmission support (6) slide and set up in first base crossbeam (10) and second base crossbeam (19) one side, transmission support (6) and first base crossbeam (5) are located the base crossbeam (10) both sides of energy storage spring (10) respectively.

10. A switch characterised in that it comprises an operating mechanism according to any one of claims 1 to 9; the switch also comprises a contact system, the contact system comprises a moving contact mechanism and a fixed contact which are matched with each other, and the operating mechanism is connected with the moving contact mechanism in a driving mode through a transmission shaft.