High-reliability isolating switch

Abstract

The utility model relates to a high-reliability isolating switch, which comprises an operating mechanism and a contact system, the contact system comprises an insulating shell, a contact frame, a plurality of moving contacts and a plurality of static contacts, and the operating mechanism comprises a shell, a manual operating shaft, a rotating shaft, a driving shaft, an energy storage torsion spring, a pushing plate, a top plate and a microswitch which is arranged on the insulating shell and matched with the top plate. The manual operation shaft is provided with a cam portion matched with the rotating shaft, the rotating shaft is provided with a transmission groove matched with the cam portion, the cam portion is arranged in the transmission groove, the cam portion acts along with the manual operation shaft and reciprocates in the transmission groove, and linkage matching of the rotating shaft and the cam portion is formed. And the top plate acts along with the pushing plate and triggers the microswitch, so that the microswitch is switched on or switched off. The utility model has the advantages of simple structure, stable and reliable performance, fast opening and closing speed, and convenient assembly.

Description

Technical Field

[0001] The utility model relates to an isolating switch, in particular to a high-reliability isolating switch. Background Art

[0002] Isolating switches isolate powered parts from energized parts, creating a clear disconnect point to isolate faulty equipment or conduct power outages for maintenance. During power outages for electrical equipment, isolating the equipment being repaired from the power source creates a clear disconnect point to prevent potential safety incidents. Isolating switches are widely used in power distribution and automation systems in construction, power generation, petrochemicals, and other industries.

[0003] An isolating switch consists of a housing, an operating mechanism, and a contact system. Existing rotary isolating switches have a complex operating mechanism. Turning the operating handle directly rotates the moving contact mechanism, leading to issues such as inadequate opening and closing, and slow opening and closing speeds. These isolating switches also suffer from unreliable performance and inconvenient assembly. Summary of the Invention

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a high-reliability disconnector with a simple structure, stable and reliable performance, fast opening and closing speed, and convenient assembly.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts a high-reliability isolating switch, including an operating mechanism and a contact system, wherein the contact system includes an insulating housing, a contact frame slidably arranged in the insulating housing and cooperating with the operating mechanism, a plurality of moving contacts cooperatingly arranged on the contact frame, a plurality of static contacts arranged in the insulating housing and cooperating with the plurality of moving contacts, the operating mechanism includes a housing, a manual operating shaft rotatably arranged on the insulating housing, a rotating shaft cooperating with the manual operating shaft, a drive shaft cooperating with the rotating shaft, an energy storage torsion spring arranged between the drive shaft and the housing, and a plurality of movable contacts cooperating with the drive shaft. A push plate that is linked with the shaft and is used to drive the contact frame to perform opening and closing actions, a top plate that is slidably set on the shell and linked with the push plate, and a micro switch that is set on the insulating shell and matched with the top plate. The manual operating shaft is provided with a cam portion that matches the rotating shaft, and the rotating shaft is provided with a transmission groove that matches the cam portion. The cam portion is set in the transmission groove, and the cam portion moves with the manual operating shaft and reciprocates in the transmission groove, and constitutes a linkage with the rotating shaft and the cam portion. The top plate moves with the push plate and triggers the micro switch to realize the connection or disconnection of the micro switch.

[0006] The beneficial effects of the above structure are as follows: the operating mechanism adopts an energy storage structure design. During operation, the manual operating shaft drives the drive shaft to move through the rotating shaft. The drive shaft can realize the energy storage and release of the energy storage torsion spring. The energy storage torsion spring can accelerate the movement of the drive shaft. The drive shaft drives the push plate to move. The push plate can drive the contact system to accelerate the opening and closing action. The opening and closing speed is faster. The manual operating shaft drives the rotating shaft to move through the cam part. When the energy storage torsion spring releases energy (passing the dead point), the energy storage torsion spring drives the drive shaft and the rotating shaft to move. The drive shaft can drive the push plate to perform the opening and closing action, thereby achieving the purpose of the operating mechanism being independent of human operation and being more convenient to operate. In addition, the micro switch can monitor the working position of the push plate, and the working reliability is higher. Therefore, the operating mechanism of the disconnector has the advantages of simple structure, stable and reliable performance, fast opening and closing speed, and convenient assembly.

[0007] Specifically, a sliding groove is provided on the housing corresponding to the top plate. One end of the top plate has a linkage piece that slides within the sliding groove and engages with the push plate. The other end of the top plate has a trigger piece that is exposed outside the housing and is used to trigger the microswitch. The top plate slides within the sliding groove of the housing, ensuring reliable movement of the top plate on the housing, thereby improving the operational reliability of the isolating switch.

[0008] In particular, the manual operating shaft has a rotating shaft portion at one end, and the insulating housing is provided with a positioning groove that cooperates with the rotating shaft portion. The rotating shaft portion is inserted into the positioning groove, forming a rotational connection between the rotating shaft portion and the insulating housing. The rotating shaft portion of the manual operating shaft is rotatably disposed within the positioning groove of the insulating housing, thereby ensuring reliable operation of the manual operating shaft and improving the operating reliability of the disconnector.

[0009] In particular, the rotating shaft is provided with a toggle groove matched with the driving shaft, and the driving shaft is engaged in the toggle groove. The driving shaft is engaged in the toggle groove of the rotating shaft, thereby ensuring that the transmission between the driving shaft and the rotating shaft is more reliable.

[0010] Specifically, the push plate has two vertically bent paddles at each end, with one end of the drive shaft extending between the two paddles. The drive shaft rotates with the rotating shaft and drives the paddles, forming a coordinated linkage between the paddles and the drive shaft. The drive shaft is inserted between the two paddles of the push plate, thereby ensuring more reliable transmission between the push plate and the drive shaft.

[0011] In particular, a push rod is interlockedly provided between the two corresponding toggle plates on the push plate, and a snap-fit ​​groove is provided on the contact frame for the push rod to engage. The push rod is inserted into the snap-fit ​​groove, thereby forming a linkage between the contact frame and the push rod. The contact frame and the push plate are connected by a snap-fit ​​method, thereby facilitating assembly of the push plate and the contact frame, making assembly more convenient.

[0012] In particular, the plurality of static contacts have a connection portion extending outside the insulating housing at one end, and the insulating housing is provided with insulating partitions separating the connection portions of the plurality of static contacts. The insulating partitions can increase the creepage distance between the plurality of static contacts, thereby improving the safety performance of the disconnector. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of an embodiment of the present utility model.

[0014] Figure 2 This is an exploded view of an embodiment of the present utility model.

[0015] Figure 3 This is a diagram of the internal structure of the operating mechanism of an embodiment of the utility model.

[0016] Figure 4 This is an assembly diagram of the manual operating shaft and the rotating shaft according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0017] like Figures 1 to 4 As shown, the embodiment of the utility model is a high-reliability isolating switch, including an operating mechanism 10 and a contact system 20, wherein the contact system 20 includes an insulating housing 21, a contact frame 22 slidably arranged in the insulating housing 21 and linked with the operating mechanism 10, a plurality of moving contacts 23 linked with the contact frame 22, and a plurality of static contacts 24 arranged in the insulating housing 21 and matched with the plurality of moving contacts 23. The operating mechanism 10 includes a housing 100, a manual operating shaft 11 rotatably arranged on the insulating housing 21, a rotating shaft 12 linked with the manual operating shaft 11, a drive shaft 13 linked with the rotating shaft 12, an energy storage torsion spring 14 arranged between the drive shaft 13 and the housing 100, and a plurality of movable contacts 23 linked with the contact frame 22. A push plate 15 for driving the contact frame 22 to perform opening and closing actions, a top plate 16 slidably set on the housing 100 and linked with the push plate 15, and a micro switch 17 set on the insulating housing 21 and matched with the top plate 16, the manual operating shaft 11 is provided with a cam portion 111 matched with the rotating shaft 12, and the rotating shaft 12 is provided with a transmission groove 121 matched with the cam portion 111, the cam portion 111 is set in the transmission groove 121, and the cam portion 111 moves with the manual operating shaft 11 and reciprocates in the transmission groove 121, and constitutes the linkage cooperation between the rotating shaft 12 and the cam portion 111, the top plate 16 moves with the push plate 15 and triggers the micro switch 17, thereby realizing the connection or disconnection of the micro switch 17.

[0018] like Figure 2 、 3As shown, the housing 100 is provided with a sliding groove 101 corresponding to the top plate 16. One end of the top plate 16 has a linkage piece 161 that slides within the sliding groove 101 and engages with the push plate 15. The other end of the top plate 16 has a trigger piece 162 that is exposed outside the housing 100 and is used to trigger the microswitch 17. The top plate slides within the housing's sliding groove, ensuring that the top plate can operate reliably on the housing, thereby improving the operational reliability of the isolating switch. The manual operating shaft 11 has a rotating shaft portion 112 at one end. The insulating housing 21 is provided with a positioning groove 211 that cooperates with the rotating shaft portion 112. The rotating shaft portion 112 is inserted into the positioning groove 211 and forms a rotational connection between the rotating shaft portion 112 and the insulating housing 21. The rotating shaft portion of the manual operating shaft is rotatably disposed within the positioning groove of the insulating housing, ensuring that the manual operating shaft can operate reliably, thereby improving the operational reliability of the isolating switch. The rotating shaft 12 is provided with a toggle groove 122 that cooperates with the drive shaft 13, and the drive shaft 13 is engaged in the toggle groove 122. The drive shaft is engaged in the toggle groove of the rotating shaft, thereby ensuring that the transmission between the drive shaft and the rotating shaft is more reliable. The two ends of the push plate 15 have two vertically bent toggle pieces 151, and one end of the drive shaft 13 extends between the two toggle pieces 151. The drive shaft 13 moves with the rotating shaft 12 and drives the toggle piece 151, and constitutes a linkage cooperation between the toggle piece 151 and the drive shaft 13. The drive shaft is inserted between the two toggle pieces of the push plate, thereby ensuring that the transmission between the push plate and the drive shaft is more reliable. A push rod 152 is provided on the push plate 15 in a linkage arrangement between the two corresponding toggling pieces 151. A snap-fit ​​groove 221 is provided on the contact frame 22 for cooperating with the push rod 152. The push rod 152 is inserted into the snap-fit ​​groove 221, thereby forming a linkage arrangement between the contact frame 22 and the push rod 152. The contact frame and the push plate are connected by a snap-fit ​​arrangement, thereby facilitating assembly of the push plate and the contact frame, making assembly more convenient.

[0019] like Figure 1 and 2 As shown, the multiple static contacts 24 have a connection portion 241 extending outside the insulating housing 21 at one end. The insulating housing 21 is provided with insulating partitions 25 that separate the connection portions 241 of the multiple static contacts 24. The insulating partitions can increase the creepage distance between the multiple static contacts, thereby improving the safety performance of the disconnector.

[0020] The operating mechanism adopts an energy storage structure design. During operation, the manual operating shaft drives the drive shaft through the rotating shaft. The drive shaft can realize the energy storage and release of the energy storage torsion spring. The energy storage torsion spring can accelerate the movement of the drive shaft. The drive shaft drives the push plate to move. The push plate can drive the contact system to accelerate the opening and closing action, and the opening and closing speed is faster. The manual operating shaft drives the rotating shaft through the cam part. When the energy storage torsion spring releases energy (passing the dead point), the energy storage torsion spring drives the drive shaft and the rotating shaft to move. The drive shaft can drive the push plate to perform the opening and closing action, thereby achieving the purpose of the operating mechanism being independent of human operation and more convenient operation. In addition, the micro switch can monitor the working position of the push plate, and the working reliability is higher. Therefore, the operating mechanism of the disconnector has the advantages of simple structure, stable and reliable performance, fast opening and closing speed, and convenient assembly.

Claims

1. A high-reliability disconnect switch, comprising an operating mechanism and a contact system, wherein the contact system comprises an insulating housing, a contact frame slidably disposed within the insulating housing and cooperating with the operating mechanism, a plurality of movable contacts cooperatingly disposed on the contact frame, and a plurality of stationary contacts disposed within the insulating housing and cooperating with the plurality of movable contacts, characterized in that: The operating mechanism includes a shell, a manual operating shaft rotatably arranged on the insulating shell, a rotating shaft linked to the manual operating shaft, a drive shaft linked with the rotating shaft, an energy storage torsion spring arranged between the drive shaft and the shell, a push plate linked with the drive shaft and used to drive the contact frame to perform opening and closing actions, a top plate slidably arranged on the shell and linked with the push plate, and a micro switch arranged on the insulating shell and matched with the top plate. The manual operating shaft is provided with a cam portion that matches the rotating shaft, and the rotating shaft is provided with a transmission groove that matches the cam portion. The cam portion is arranged in the transmission groove, and the cam portion moves with the manual operating shaft and reciprocates in the transmission groove, and constitutes a linkage between the rotating shaft and the cam portion. The top plate moves with the push plate and triggers the micro switch to realize the connection or disconnection of the micro switch.

2. The high-reliability isolating switch according to claim 1, characterized in that: A sliding groove is provided on the shell corresponding to the top plate. One end of the top plate has a linkage piece slidably provided in the sliding groove and matched with the push plate. The other end of the top plate has a trigger piece exposed outside the shell and used to trigger the micro switch.

3. The high-reliability isolating switch according to claim 1 or 2, characterized in that: One end of the manual operating shaft has a rotating shaft portion, and a positioning groove matched with the rotating shaft portion is provided on the insulating shell. The rotating shaft portion is inserted into the positioning groove and constitutes a rotating connection between the rotating shaft portion and the insulating shell.

4. The high-reliability isolating switch according to claim 1 or 2, characterized in that: The rotating shaft is provided with a toggle groove matched with the driving shaft, and the driving shaft is engaged in the toggle groove.

5. The high-reliability isolating switch according to claim 1 or 2, characterized in that: The two ends of the push plate are provided with two vertically bent toggle pieces, one end of the drive shaft extends between the two toggle pieces, the drive shaft moves with the rotating shaft and drives the toggle pieces, and forms a linkage cooperation between the toggle pieces and the drive shaft.

6. The high-reliability isolating switch according to claim 5, characterized in that: A push rod is provided on the push plate in linkage with the two corresponding toggling pieces, and a clamping groove matched with the push rod is provided on the contact frame. The push rod is inserted into the clamping groove and forms a linkage with the contact frame and the push rod.

7. The high-reliability isolating switch according to claim 1 or 2, characterized in that: One end of the plurality of static contacts has a wiring portion extending outside the insulating shell, and the insulating shell is respectively provided with insulating partitions separating the wiring portions of the plurality of static contacts.

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