CN116564746A - An isolating switch lapping and disengaging mechanism, operating mechanism and isolating switch - Google Patents

Abstract

The invention discloses a lapping and disengaging mechanism of a disconnector, which at least includes a metal elastic part and a metal limiting part. The position member is provided with a force arm, and the opening of the metal elastic member moves into the force arm to form an overlap; the force arm of the metal limiter moves away from the opening of the metal elastic member, and the present invention When the isolating switch receives the remote control opening signal, the tripping response and action are faster, and the power supply can be cut off quickly, which improves the reliability of the isolating switch and the safety of system operation.

Description

An isolating switch lapping and disengaging mechanism, operating mechanism and isolating switch

technical field

The invention relates to the technical field of low-voltage electrical appliances, in particular to an isolating switch lapping and disengaging mechanism, an operating mechanism and the isolating switch.

Background technique

The development history of the switch has developed from the original knife switch that requires manual operation to the current intelligent switch used in various large electrical control equipment. The functions of the switch are more and more, and the safety is getting higher and higher.

A rotary switch is a common switch that prevents unauthorized operation of a rotary operator by locking the rotary operator in a specific position corresponding to a specific state of the rotary operator. With the development of technology, especially in the photovoltaic system, the requirement for the remote switching function of the isolation switch has gradually appeared. For example, when a fire occurs in the photovoltaic panel, the circuit needs to be disconnected by remote control. The common implementation method is to add energy storage springs and For the energy storage unlocking mechanism, the energy storage spring requires a larger torque than the operating spring. When an electromagnetic coil type electromagnet tripping device is used, the reliability of the mechanism action is low, and there are risks in the system operation.

Contents of the invention

Based on the above background, the present invention provides an isolating switch lapping and disengaging mechanism, an operating mechanism and an isolating switch. When the isolating switch is remotely controlled to open, the reaction and action are faster, and the reliability of the isolating switch and the reliability of the system operation are improved. Security, which can effectively overcome at least one of the above-mentioned problems.

Technical scheme of the present invention is as follows:

On the one hand, the present invention provides an overlapping and disengaging mechanism of a disconnector, which at least includes a metal elastic part and a metal stopper. The metal limiter is provided with a force arm, and the opening of the metal elastic member moves into the force arm to form an overlap; the force arm of the metal limiter moves away from the opening of the metal elastic member.

In a preferred embodiment, during the closing process of the isolating switch, the metal elastic member rotates so that the opening snaps into the arm to form an overlap; during the remote opening process of the isolating switch, the The metal limiting member rotates or slides to make the moment arm disengage from the opening.

In a preferred embodiment, a shift fork is also included, and the metal elastic member is fixedly connected to the fork to form an elastic transmission member.

In a preferred embodiment, the movement of the moment arm disengaging from the opening of the metal elastic member is rotational or translational.

In a preferred embodiment, when the movement mode is translational, the metal limiter is slidably arranged on the upper cover of the isolating switch, and the metal limiter is provided with a sliding lever, Sliding limit groove or sliding limit boss.

In a preferred embodiment, when the movement mode is rotary, the metal limiting member is provided with a rotating lever, a rotating limiting hole or a rotating limiting boss.

In a preferred embodiment, the force arm is disengaged from the opening of the metal elastic member under the direct or indirect force of an output rod of the electric driver of the disconnector.

In a preferred embodiment, an elastic member for driving the metal limiting member to reset is also included.

In a preferred embodiment, the opening of the metal elastic member snaps into the moment arm after moving from top to bottom.

On the other hand, the present invention also provides an operating mechanism of an isolating switch, including the hasp and disengaging mechanism, an operating spring and an operating member.

In addition, the present invention also provides an isolating switch, which includes an insulating casing, the operating mechanism, an electric driver, an energy storage mechanism, and a contact contact system. The contact contact system includes a rotating part and a fixed part. The rotating A movable contact is arranged on the fixed part, a static contact is arranged on the fixed part, the rotating part is connected with the elastic transmission part of the operating mechanism, and the rotation of the metal elastic part drives the rotation of the rotating part to realize the The contact and separation of the moving contact and the static contact.

In a preferred embodiment, the operating spring, the operating member, and the movable contact are arranged in an insulating shell composed of a plurality of shells.

In a preferred embodiment, the electric driver is integrally or separately provided with the insulating casing.

In a preferred embodiment, the electric driver is arranged beside the operating spring, the operating member, and the moving contact.

In a preferred embodiment, the energy storage mechanism at least includes an energy storage spring, an energy storage locking element, an energy storage unlocking element, a locking reset element for driving the energy storage locking element to reset, and a locking reset element for driving the energy storage locking element. The unlocking reset part capable of resetting the unlocking part.

In a preferred embodiment, the energy storage locking member is provided with a blocking piece, a rotation center hole or a rotation center column, and the energy storage locking member performs a rotational movement centered on the rotation center hole or the rotation center column. .

In a preferred embodiment, one end of the energy storage spring is fixed on the insulating casing, and the other end overlaps or separates from the retainer of the energy storage locking member.

In a preferred embodiment, a hook or a ring is provided on the end of the locking reset member.

In a preferred embodiment, one end is provided with an unlocking lever in contact with the electric driver, and the other end is provided with a stepped platform detachably engaged with the energy storage locking member.

In a preferred embodiment, the energy storage mechanism is arranged coaxially with the contact contact system or the energy storage mechanism is arranged on the same side as the electric driver.

The beneficial effects of the present invention are:

1. The metal elastic part and the limit part of the present invention can be disengaged, so that the isolating switch can quickly trip and cut off the power supply when receiving the remote opening signal.

2. When the operating mechanism of the isolating switch is unlocked, the unlocking force required is smaller, and various types of releases can be selected, and the adaptation types are increased, and the cost is reduced.

3. The structure design of the operating mechanism of the isolating switch is reasonable, and the cooperation of the metal elastic part and the limit part makes the action of the isolating switch more reliable when it is opened and tripped, and the safety of the system operation is improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is an exploded view of a partial structure of a disconnector according to Embodiment 1 of the present invention;

FIG. 2 is an exploded view of the structure of a disconnector according to Embodiment 1 of the present invention;

3 is a schematic structural view of a metal elastic member according to Embodiment 1 of the present invention;

Fig. 4 is a schematic structural diagram of a metal stopper according to Embodiment 1 of the present invention;

Fig. 5 is a schematic structural diagram of an energy storage locking member according to Embodiment 1 of the present invention;

Fig. 6 is a schematic structural diagram of an energy storage unlocking member according to Embodiment 1 of the present invention;

Fig. 7 is a schematic diagram of the positional relationship between the energy storage unlocking part, the energy storage locking part and the energy storage spring when the isolating switch of Embodiment 1 of the present invention is in the closing state;

Fig. 8 is a schematic structural diagram of the isolating switch in the closed state according to Embodiment 1 of the present invention;

Fig. 9 is a schematic structural diagram of the isolating switch according to Embodiment 1 of the present invention when it is in an open state;

Fig. 10 is a schematic structural diagram of a metal stopper according to Embodiment 2 of the present invention;

Fig. 11 is a schematic structural diagram of an energy storage locking member according to Embodiment 2 of the present invention;

Fig. 12 is a schematic structural diagram of the isolating switch in the closed state according to the second embodiment of the present invention.

Detailed ways

Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configurations and algorithms presented below, but covers any modification, substitution and improvement of elements, components and algorithms without departing from the spirit of the invention.

Embodiment 1 and Embodiment 2 of the present application will be clearly described below with reference to the accompanying drawings.

Embodiment one

As shown in Figures 1 and 2, the present invention discloses a disconnector, including an insulating case, an operating mechanism, a contact contact system, an energy storage mechanism, and an electric driver 40. The operating mechanism includes an operating rod 11, an active shift fork 12, The operating spring 13 and the overlapping and disengaging mechanism, the overlapping and disengaging mechanism includes a shift fork 14, a metal elastic member 15, a metal limiter 16 and an elastic member 17 for driving the metal limiter 16 to reset, so The shift fork 14 is fixedly connected with the metal elastic member 15 to form an elastic transmission member 110. The contact contact system includes a rotating part 31 and a fixed part 32. The moving contact is arranged on the rotating part 31, and the static contact is arranged on the On the fixed part 32, the rotating part 31 is fixed on the elastic transmission part 110. When the elastic transmission part 110 rotates, it can drive the rotating part 31 to rotate together, so as to realize the contact between the moving contact and the static contact. Contact and separation, so as to realize the closing and opening of the isolating switch.

Described insulating casing comprises loam cake 101 and middle seat 102, and described loam cake 101 and middle seat 102 form the cavity for accommodating described operating mechanism, energy storage mechanism and electric driver 40, and described middle seat 102 and isolation The base of the switch forms a cavity for accommodating the contact contact system. The upper part of the operating rod 11 protrudes from the upper cover 101 to connect with the operating handle of the isolating switch. The active shift fork 12 is connected to the operating rod 11 The operating part is fixedly arranged, and the operating spring 13 is arranged between the active shift fork 12 and the shift fork 14, and the active shift fork 12 is provided with an active long arm and a pair of active short arms extending downward. Arm, the shift fork is provided with a pair of short arms extending upwards, a pair of active short arms and a pair of short arms are correspondingly misplaced, and the upper and lower active short arms cooperate with the short arms to fix the operating spring 13, when the The rotation of the operating member will drive one of the torsion arms of the operating spring 13 to rotate together, so that the operating spring 13 generates an elastic force to drive the elastic transmission member 110 to reset.

It should be noted that the form of fixed connection between the shift fork 14 and the metal elastic member 14 can be riveted, welded, etc., or can be assembled in the form of connection, such as socket, clamping or threaded connection. The form of fixed connection between the operating rod 11 and the active shift fork 12 may be riveting, socketing, clamping and the like.

In this embodiment, the electric driver 40 is arranged in the cavity formed by the insulating casing. In other specific embodiments, the electric driver 40 can also be arranged on the outside of the insulating casing. The driver 40 can drive the action of the mechanism in the insulating casing to realize the opening of the isolating switch.

In addition, in this embodiment, the electric driver 40 is arranged on one side of the cavity of the insulating casing, and the energy storage mechanism is arranged on the other side adjacent to the electric driver 40 in the cavity. In other specific In an embodiment, the energy storage mechanism and the electric driver 40 can also be arranged on the same side of the cavity, which can be reasonably arranged according to specific conditions.

Please continue to refer to FIG. 1 and FIG. 2, the energy storage mechanism includes an energy storage spring 21, an energy storage locking member 22, a locking reset member 24, an energy storage unlocking member 23 and an unlocking reset member 25, and the energy storage locking The member 22 is fixed on the middle seat 102 around the rotation axis a, and the end of the lock reset member 24 is provided with a hook or a ring 241, and one end of the lock reset member 24 passes through the hook or ring 241 is fixed on the middle seat 102 , and the other end is fixed on the energy storage locking member 22 . The energy storage unlocking member 23 is rotatably fixed on the middle seat 102 through the rotating shaft b, the unlocking reset member 25 is sleeved on the shaft of the middle seat 102, and one end is abutted against the energy storage unlocking member 23 and the other end abuts against the inner wall of the middle seat 102 .

Specifically, please refer to FIG. 5 , the energy storage locking member 22 is provided with a blocking plate 221, a rotation center part 222 and a push rod 223, the rotation center part 222 is a rotation center hole or a rotation center column, and the energy storage The locking member 22 rotates around the central axis of the rotating center portion 222. In this embodiment, the rotating center portion 222 is a rotating center hole, and the energy storage locking member 22 is sleeved on the rotating center hole through the rotating center hole. On the rotation axis a of the middle seat 102, the blocking piece 221 is located at one end of the energy storage lock member 22, and the push rod 223 is located at the upper end of the energy storage lock member 22. Of course, the rotation center When the part 222 is set as a rotation center column, such a hole can be formed on the middle seat 102, and the rotation center column can be inserted into the hole, so that the energy storage locking member 22 can also be rotated around the rotation center column.

Please continue to refer to FIG. 1 and FIG. 7, the energy storage spring 21 is arranged in the receiving groove 1020 of the middle seat 102, the energy storage spring 21 includes a first torsion arm and a second torsion arm, the first torsion The arm is fixed on the middle seat 102, the second torsion arm is in a free state, and the active long arm of the active shift fork 12 stretches between the first torsion arm and the second torsion arm of the energy storage spring 21. When the operating member rotates, the active long arm of the active shift fork 12 pushes the second torsion arm to rotate, and the energy storage spring stores energy. When the energy storage spring 21 is in the energy storage state, the The second torsion arm is in contact with one end of the blocking piece 221 .

Please continue to refer to FIG. 1, FIG. 6 and FIG. 7, the energy storage unlocking member 23 is rod-shaped, and the middle position of the energy storage unlocking member 23 is provided with a shaft hole 231, and the energy storage unlocking member 23 passes through the shaft The hole 231 is sleeved on the rotating shaft b of the middle seat 102 , the energy storage unlocking member 23 is provided with an unlocking lever 232 at one end to cooperate with the electric driver 40 , and at the other end is provided with another locking plate 221 . One end of the stepped platform 233 is detachably fitted. When the isolating switch is in the closed state, the other end of the blocking piece 221 is in contact with the stepped platform 233 .

Please refer to FIG. 3 , the metal elastic member 15 is a non-closed annular curved surface sheet structure with an opening 150, the metal elastic member 15 includes a main body 151 and opening ends 152 located at both ends of the opening, by the opening end part 152 to the main body part 151 is a downwardly inclined slope, the opening end 152 has a bent part bent downward, and the main body part 151 is provided with a hole for riveting with the shift fork 14 fixed.

Please refer to FIG. 4 , the metal limiting member 16 is slidably arranged under the upper cover 101 , the metal limiting member 16 includes a sliding part 161 , a sliding lever 162 and a force arm 163 , and the sliding part 161 Slidably connected under the upper cover 101, the sliding lever 162 is located under the sliding part 161, and its extending direction is perpendicular to the sliding direction of the metal stopper 16. The sliding lever 162 and The force arms 163 are respectively arranged on both sides of the limiting part 161, and the sliding lever 162 is pushed to make the metal limiting part 16 slide along the upper cover 101, and the sliding part 161 is a sliding Limit slot or sliding limit boss.

The working cooperation process of the metal elastic part and the metal limit part in the opening and closing process of the isolating switch of the present invention will be described in detail below in conjunction with Fig. 8 and Fig. 9:

When the isolating switch is manually closed, the operating handle is driven to rotate the operating part clockwise, and the active shift fork 12 pushes a torsion arm of the operating spring 13 to rotate together, and then the elastic transmission part 110 rotates with the operating spring 13, During the rotation, the upper surface of the metal elastic member 15 is in contact with the lower end of the force arm 163, and under the action of the force arm 163, the metal elastic member 15 is elastically deformed, and the curved surface deforms and sinks to overcome the force arm 163 , when the position of the force arm 163 corresponds to the opening 150 of the metal elastic member 15 , the opening 150 is clamped on the force arm 163 , and the rotating part 31 rotates with the shift fork 14 , make the moving contact contact with the static contact, and complete the closing of the isolating switch.

At the same time, during the rotation of the operating member, the long arm of the active shift fork 12 pushes the second torsion arm of the energy storage spring to rotate accordingly until the second torsion arm of the energy storage spring 21 is against the One end of the blocking piece 221, at this time, one end of the blocking piece 221 is set against the second torsion arm, and the other end is set against the step platform 233 on the energy storage unlocking member 23, and the energy storage spring 21 keeps In the energy storage state, as shown in Figure 8.

When faults such as short circuit or overvoltage occur in the circuit, an output rod 401 on the electric driver 40 knocks the unlocking lever 232 at one end of the energy storage unlocking part 23 to drive the energy storage unlocking part 23 to rotate clockwise around the shaft , the stepped platform 233 at the other end of the energy storage unlocking member 23 is separated from one end of the blocking plate 221, the energy storage spring 21 rotates counterclockwise under the action of its own restoring force, and the second energy storage spring 21 The torsion arm pushes the energy storage locking member 22 to rotate clockwise, and the push rod 223 drives the sliding lever 162 of the metal limiter 16 during the rotation, and the metal limiter 16 moves along the upper cover 101 Sliding in a direction away from the metal elastic member 15, the force arm 163 is separated from the opening 150 of the metal elastic member 15, and the metal elastic member 15 and the shift fork 14 are under the reset force of the operating spring 13 Turning counterclockwise, the shift fork 14 drives the rotating part 31 to rotate, so that the moving contact is separated from the static contact, and the isolating switch is opened, as shown in FIG. 9 .

Embodiment two

As shown in Figure 10 and Figure 11, the present invention also discloses another structure of isolating switch, the difference from Embodiment 1 is that the metal stopper 16 is rotatably arranged on the The upper end of the push rod 223 of the locking member 22 is provided with an inclined surface, and the inclined surface is in contact with the metal limiting member 16. In this embodiment, the metal limiting member 16 includes a rotating lever 162' and a force arm 163' , the rotating lever and the force arm 163' are vertically arranged and not in the same plane, and the corner where the force arm 163' intersects with the rotating lever is provided with a rotation limit hole or a rotation limit boss 160, the metal limiter 16 is rotatably set on the upper cover 101 through the rotation limit hole or the rotation limit boss 160, the direction of the rotation axis of the metal limiter 16 is in line with the operation The rod 11 is vertical, and the metal stopper 16 rotates so that the force arm 163 ′ rotates downward and disengages from the opening 150 of the metal elastic member 15 .

When the isolating switch is in the closed state, the inclined surface on the push rod 223 contacts the lower end of the rotating lever 162', and one end of the blocking piece 221 is abutted against the second torsion arm of the energy storage spring, The other end abuts against the stepped platform of the energy storage unlocking member 23 .

When faults such as short circuit or overvoltage occur in the circuit, an output rod 401 on the electric driver 40 knocks the unlocking lever 232 at one end of the energy storage unlocking part 23 to drive the energy storage unlocking part 23 to rotate clockwise around the shaft , the stepped platform 233 at the other end of the energy storage unlocking member 23 is separated from one end of the blocking plate 221, the energy storage spring 21 rotates counterclockwise under the action of its own restoring force, and the second energy storage spring 21 The torsion arm pushes the energy storage lock member 22 to rotate clockwise, and the push rod 223 drives the rotation lever 162 ′ of the metal limiter 16 during the rotation process, and the metal limiter 16 is limited by the rotation. The position hole or the rotation limiting boss 160 is rotated as the center, so that the force arm 163 is rotated downward and disengaged from the opening 150 of the metal elastic member 15, and the metal elastic member 15 and the shift fork 14 are in the position of the operating spring 13. Under the reset force, it rotates counterclockwise, and the shift fork 14 drives the rotating part 31 to rotate, so that the movable contact is separated from the static contact, and the disconnector switch is opened.

The present invention may be embodied in other specific forms without departing from its spirit and essential characteristics. The current embodiments are to be considered in all respects as illustrative rather than restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and falls within the meaning and range of equivalents of the claims All modifications are thereby included within the scope of the present invention.

Claims (19)

1. The lapping and separating mechanism of the disconnecting switch is characterized by at least comprising a metal elastic piece (15) and a metal limiting piece (16), wherein the metal elastic piece (15) is of a sheet-shaped, curved surface and hollow structure in the middle and is provided with an opening (150), the metal limiting piece (16) is provided with force arms (163, 163 '), and the opening (150) of the metal elastic piece (15) enters the force arms (163, 163') in a moving way to form lapping; the arms (163, 163') of the metal retainer (16) are movably disengaged from the opening (150) of the metal spring (15).

2. The overlap and release mechanism according to claim 1, further comprising a fork (14), wherein the metallic elastic member (15) is fixedly connected with the fork (14) as an elastic transmission member (110).

3. The overlap and break-away mechanism according to claim 1, characterized in that the moment arm (163, 163') is moved in a rotary or translational manner out of the opening (150) of the metal spring (15).

4. A lap and break-away mechanism according to claim 3, characterized in that, when the movement is translational, the metal limiting member (16) is slidingly arranged on the upper cover of the isolating switch, and the metal limiting member (16) is provided with a sliding deflector (162), a sliding limiting groove or a sliding limiting boss (161).

5. A lap and break-away mechanism according to claim 3, characterized in that, when the movement is rotary, the metal stop (16) is provided with a rotation lever (162'), a rotation stop hole or a rotation stop boss (160).

6. The overlap and release mechanism according to claim 1, characterized in that the moment arm (163, 163') is released from the opening (150) of the metal elastic member (15) under the direct or indirect force of a force lever of the electrical actuator (40) of the disconnector.

7. The overlap and release mechanism according to claim 1, further comprising an elastic member (17) for driving the metal stop member (16) to return.

8. The overlap and release mechanism according to claim 1, characterized in that the opening (150) of the metal elastic member (15) snaps into the moment arm (163, 163') after a top-down movement.

9. An operating mechanism for a disconnector, characterized by comprising a snap-and-release mechanism according to any of claims 1-8, an operating spring (13) and an operating member.

10. An isolating switch, characterized in that: the contact system comprises a rotating part (31) and a fixed part (32), wherein a moving contact is arranged on the rotating part (31), a fixed contact is arranged on the fixed part (32), the rotating part (31) is connected with an elastic transmission piece (110) of the operating mechanism, and the metal elastic piece (15) rotates to drive the rotating part (31) to rotate so as to realize contact and separation of the moving contact and the fixed contact.

11. The disconnector according to claim 10, characterized in that the operating spring (13), the operating member, the moving contact are arranged in an insulating housing consisting of a plurality of housings.

12. The device according to claim 10, characterized in that the electric drive (40) is provided integrally or separately from the insulating housing.

13. An overlap and release mechanism according to claim 10, characterized in that the electric actuator (40) is arranged beside the operating spring (13), operating member, moving contact.

14. The isolating switch according to claim 10, wherein the energy storage mechanism comprises at least an energy storage spring (21), an energy storage locking member (22), an energy storage unlocking member (23), a locking reset member (24) for driving the energy storage locking member (22) to reset, and an unlocking reset member (25) for driving the energy storage unlocking member (23) to reset.

15. The isolating switch according to claim 14, wherein the energy storage locking member (22) is provided with a blocking piece (221), a rotation center hole or a rotation center column (222), and the energy storage locking member (22) is rotated around the rotation center hole or the rotation center column (222).

16. The disconnector according to claim 14, characterized in that one end of the energy storage spring (21) is fixed to the insulating housing and the other end is in overlap or separate from the catch (221) of the energy storage locking member (22).

17. The disconnector according to claim 14, characterized in that the locking return (24) is provided with a hook or ring (241) at the end.

18. Disconnecting switch according to claim 14, characterized in that an unlocking lever (232) is provided at one end in contact with the electric drive (40) and a step (233) is provided at the other end in releasable engagement with the energy storage locking member (22).

19. The disconnector according to claim 10, characterized in that the energy storage means are arranged coaxially with the contact system or on the same side as the electric drive (40).