Disconnectors and switchgear

Abstract

Embodiments of the present disclosure relate to an isolating switch and a switch cabinet. The isolating switch includes: a base, suitable for installation in an electrical cabinet; a first static contact, arranged on the base; a second static contact, electrically spaced from the first static contact, arranged on the base; a first contact arm, rotatably arranged on the first static contact or the second static contact; and a second contact arm, rotatably arranged on the first static contact or the second static contact, wherein the base includes a driving mechanism, and the first contact arm and the second contact arm are configured to be able to contact the first static contact and the second static contact at the same time to close the isolating switch, and can be driven by the driving mechanism to rotate away from each other so that the isolating switch is disconnected. In this way, by providing two contact arms that can rotate to both sides respectively, the size and weight of each contact arm are reduced compared to the single contact arm form, thereby reducing the driving torque, and then reducing the motor size and the overall size.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to the electrical field, and more particularly to an isolating switch and a switch cabinet. Background Art

[0002] With the rapid development of my country's industry, the rapid growth of social electricity demand has brought new challenges to the power supply. As a device that directly supplies power to users, the high-current switchgear has increasing requirements for its flexibility. In order to make full use of the switchgear space to achieve more functions, certain requirements are set for the structural dimensions of the isolating switches in the high-current switchgear.

[0003] Figure 1A and 1B 1 and 2 show examples of a conventional isolating switch 10' in an on state and an off state. Figure 1A As shown, the isolating switch 10' comprises a first stationary contact 100' and a second stationary contact 200' arranged at intervals. The isolating switch 10' also comprises a rotating shaft 400' arranged perpendicular to the second stationary contact 200'. The blade-shaped contact arm 300' is rotatably supported on the shaft 400' and can rotate around the shaft 400'. Figure 1A In the connected state shown, the contact arm 300' is in contact with the first stationary contact 100' and the second stationary contact 200' at the same time. Figure 1B In the disconnected state shown, the contact arm 300' rotates to one side around the axis 400' and releases the contact with the first stationary contact 100'. According to safety standards, in the disconnected state, the contact arm 300' must maintain a certain distance from the first stationary contact 100'. In order to adapt to a larger current, the contact arm 300' usually has a larger width.

[0004] Because the contact arm is large in size and heavy in weight, the required torque is large, which leads to a large motor size and affects the overall size. Therefore, how to make the high-current isolating switch meet the requirement of the switch structure size as small as possible is a challenge faced by designers. Summary of the invention

[0005] The embodiments of the present disclosure provide an isolating switch, which is intended to at least overcome the problems existing in the panel switches in the prior art.

[0006] The embodiment of the present disclosure relates to an isolating switch. The isolating switch comprises: a base, suitable for being installed in an electrical cabinet; a first static contact, arranged on the base; a second static contact, arranged on the base electrically spaced from the first static contact; a first contact arm, rotatably arranged on the first static contact or the second static contact; and a second contact arm, rotatably arranged on the first static contact or the second static contact, wherein the base comprises a driving mechanism, the first contact arm and the second contact arm are configured to be able to contact the first static contact and the second static contact at the same time to close the isolating switch, and can be driven by the driving mechanism to rotate away from each other to open the isolating switch.

[0007] According to an embodiment of the present invention, by providing two contact arms, the width required for the current is divided into two parts, thereby improving the flexibility of the design. On this basis, the two contact arms can rotate to both sides respectively, thereby, the space requirement for the structure is divided into two sides. Compared with the conventional single-sided rotation of a single contact arm, the double contact arm has a reduced weight due to the reduced width of each contact arm, and the required driving torque is greatly reduced, the size of the motor can be reduced, and thus the overall size is reduced.

[0008] In some embodiments, the first contact arm and the second contact arm are disposed on the second stationary contact and are configured to be driven to move away from each other in opposite directions. In such an embodiment, the first contact arm and the second contact arm are disposed on the same stationary contact, which can simplify the design difficulty of the synchronous movement of the contact arms, reduce the space required for the driving mechanism, and improve the stability of the movement of the contact arms.

[0009] Alternatively, in some embodiments, the first contact arm and the second contact arm may be respectively disposed on different stationary contacts. For example, the first contact arm is disposed on the first stationary contact, and the second contact arm is disposed on the second stationary contact.

[0010] In some embodiments, the isolating switch also includes a first rotating shaft and a second rotating shaft coupled to the driving mechanism and arranged perpendicular to the second static contact, the driving mechanism is configured to drive the first rotating shaft and the second rotating shaft to rotate, and the first rotating shaft is configured to drive the first contact arm to rotate, and the second rotating shaft is configured to drive the second contact arm to rotate.

[0011] In such an embodiment, the driving mechanism may be directly or indirectly coupled to the first rotating shaft and the second rotating shaft to achieve driving of the first rotating shaft and / or the second rotating shaft. For example, the output shaft of the driving mechanism is directly coupled to the first rotating shaft or the second rotating shaft, or may be indirectly coupled via a gear or a gear set. The driving mechanism drives the rotating shaft, which in turn drives the first contact arm and the second contact arm to move.

[0012] In some embodiments, the first rotating shaft and the second rotating shaft are at the same distance from the first stationary contact, thereby enabling the first contact arm and the second contact arm to maintain the same distance from the first stationary contact during movement.

[0013] In some embodiments, the isolating switch also includes a first connecting member and a second connecting member, one end of the first connecting member is fixedly mounted on the first rotating shaft and the other end of the first connecting member is fixedly connected to the first contact arm, and one end of the second connecting member is fixedly mounted on the second rotating shaft and the other end of the second connecting member is fixedly connected to the second contact arm.

[0014] In such an embodiment, the connecting member is used to transmit the driving torque of the rotating shaft to the contact arm, so that the electrical insulation of the contact arm can be achieved. In some embodiments, the connecting member can be an insulator connected to the rotating shaft through a flange.

[0015] In some embodiments, the driving mechanism is coupled to the first rotating shaft, the first rotating shaft is coupled to the second rotating shaft, and the driving mechanism is configured to drive the first rotating shaft and the second rotating shaft to rotate synchronously. In such an embodiment, the driving mechanism, as a power source, transmits power to the first rotating shaft by coupling with the first rotating shaft, and then the first rotating shaft can continue to transmit power to the second rotating shaft by coupling with the second rotating shaft, thereby realizing the driving of the first rotating shaft and the second rotating shaft. Here, only one power source needs to be set, which simplifies the structure and reduces the cost.

[0016] In some embodiments, the drive mechanism includes a motor, a first gear is sleeved on the first rotating shaft and a second gear is sleeved on the second rotating shaft, the first gear is meshed with the second gear, and the drive mechanism drives the second gear via a transmission mechanism, wherein the first gear and the second gear have the same size. In such an embodiment, the transmission mechanism can be a single-stage or multi-stage transmission composed of a gear set, which transmits the power of the drive mechanism to the second gear, so that the second gear drives the second rotating shaft and the first gear to rotate. The use of a motor and a gear transmission can greatly reduce the space requirement while ensuring the stability of the synchronous movement of the first rotating shaft and the second rotating shaft.

[0017] In some embodiments, the first contact arm includes a contact arm plate group, and the second contact arm includes a contact arm plate group, and the contact arm plate group extends in a first direction parallel to the base. In such an implementation, the first direction can be, for example, the direction of the interval between the first static contact and the second static contact, that is, the direction from the second static contact toward the first static contact. In such an embodiment, by arranging a plate-type contact arm parallel to the contact plate, the overall structure is made more compact. The contact arm plate group includes at least one contact arm plate, and the first contact arm and the second contact arm can have the same contact arm plate group or a symmetrical contact arm plate group, and are arranged side by side on the second static contact. In such an embodiment, by arranging two identical or symmetrical contact arms, it can be ensured that the rotation angle required for the first contact arm and the second contact arm in the on state is the same, thereby realizing a synchronous conduction circuit.

[0018] In some embodiments, the contact arm plate group includes two end contact arm plates respectively located on both sides of the stationary contact and aligned, and the two end contact arm plates are fixedly connected by a contact arm plate connector. In such an embodiment, arranging the contact arm plates on both sides of the stationary contact can increase the contact area between the contact arm plates and the stationary contact, thereby increasing the current flux.

[0019] In some embodiments, the end contact arm plate includes a fixed plate and a contact plate, the fixed plate is rotatably disposed on the stationary contact, and the contact plate is fixed on the fixed plate and located between the fixed plate and the stationary contact. In such an embodiment, the fixed plate can be an aluminum plate, and the contact plate is a copper plate. The fixed plate can achieve the fixation and relative movement of the contact plate, and assist in heat dissipation.

[0020] In some embodiments, a spring is provided between the fixed plate and the contact plate, and the spring is configured to press the contact plate so that the contact plate abuts against the stationary contact. The pressing force generated by the deformation of the spring can ensure reliable contact of the contact arm plate with the stationary contact, thereby improving the stability of the isolating switch.

[0021] In some embodiments, the first stationary contact includes at least one first contact plate, and the second stationary contact includes at least one second contact plate, wherein the first contact plate and the second contact plate extend along a first direction and are aligned in the first direction. In some embodiments, the base may have a mounting surface suitable for mounting the stationary contact. In such an embodiment, the first contact plate and the second contact plate are parallel to the mounting surface of the base, which is conducive to reducing the size of the contacts and the overall size.

[0022] In some embodiments, at least one first contact plate includes a plurality of first contact plates, at least one second contact plate includes a plurality of second contact plates, and the contact plate group further includes at least one intermediate contact plate aligned with the end contact plate, at least one intermediate contact plate is fixed to the contact plate connector, and a gap for accommodating the intermediate contact plate is formed between two adjacent first contact plates and between two adjacent second contact plates. In such an embodiment, the adjacent contact plates are connected, for example, by aluminum plates of smaller size, so that a gap can be formed in the middle to accommodate the intermediate contact plate. By arranging a plurality of contact plates overlapping in the vertical direction and arranging a corresponding intermediate contact plate between every two contact plates, the switch can receive a larger circuit and improve the contact efficiency, further making the overall structure more compact.

[0023] At the same time, each relative contact plate and the corresponding contact arm plate can be regarded as an isolating switch layer. Each isolating switch layer includes all components for realizing the isolation function, so the isolating switch layer can be realized as a module. For different current sizes, the required number of isolating switch layers can be set according to needs to achieve corresponding adaptation.

[0024] In some embodiments, the middle contact arm plate includes two contact plates and a spring located between the two contact plates, and the spring is configured to press the contact plate so that the contact plate abuts against the fixed contact. In such an embodiment, the two contact plates are respectively in contact with the fixed contacts on both sides of the gap, thereby achieving an increase in current flux.

[0025] In some embodiments, chamfers are provided at both ends of the edge of the first stationary contact facing the second stationary contact. In such embodiments, by providing chamfers, additional inclined surfaces are formed at both ends of the end surface of the first stationary contact, and the inclined surfaces play a guiding role to prevent the impact of the contact arm plate on the stationary contact during closing caused by assembly errors, thereby achieving smooth conduction of the circuit.

[0026] The second aspect of the present disclosure provides a switch cabinet. The switch cabinet comprises the disconnector according to the first aspect of the present disclosure. The description and advantages of the first aspect of the present disclosure are also applicable to the switch cabinet of the second aspect of the present disclosure.

[0027] According to the embodiments of the present disclosure, the size of the disconnector can be reduced through the design of double contact arms moving in different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other objects, features and advantages of the embodiments of the present disclosure will become more easily understood through the following detailed description with reference to the accompanying drawings. In the accompanying drawings, various embodiments of the present disclosure will be described in an exemplary and non-limiting manner, in which:

[0029] Figure 1A-1BA schematic diagram of an isolating switch in different states according to the prior art is shown;

[0030] Figure 2A A schematic diagram of a disconnect switch according to an exemplary embodiment of the present disclosure is shown;

[0031] Figure 2B Shows Figure 2A Exploded diagram of the isolating switch in ;

[0032] Figure 3A-3B A schematic diagram showing an isolating switch in different states according to an exemplary embodiment of the present disclosure is shown;

[0033] Figure 4A Shows Figure 2A Schematic diagram of the contact arm of the disconnector in FIG.

[0034] Figure 4B Shows Figure 4A An exploded schematic diagram of the tentacles in FIG.

[0035] Figure 5A An overall schematic diagram of a base of a disconnector according to an exemplary embodiment of the present disclosure is shown;

[0036] Figure 5B Shows Figure 5A A schematic diagram of the base in another perspective;

[0037] Figure 6 A schematic diagram showing a driving structure according to an exemplary embodiment of the present disclosure; and

[0038] Figure 7 A schematic diagram of a disconnect switch according to an exemplary embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0039] The principles of the present disclosure will now be described with reference to the various exemplary embodiments shown in the accompanying drawings. It should be understood that the description of these embodiments is only to enable those skilled in the art to better understand and further implement the present disclosure, and is not intended to limit the scope of the present disclosure in any way. It should be noted that similar or identical reference numerals may be used in the figures where feasible, and similar or identical reference numerals may represent similar or identical functions. Those skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods described herein may be adopted without departing from the principles of the present disclosure described herein.

[0040] As used herein, the term "including" and its variations will be interpreted as open-ended terms meaning "including but not limited to". The term "based on" will be interpreted as "based at least in part". The terms "one embodiment" and "embodiment" should be understood as "at least one embodiment". The term "another embodiment" should be understood as "at least one other embodiment". The terms "first", "second", etc. may refer to different or identical objects. Other explicit and implicit definitions may be included below. Unless the context clearly indicates otherwise, the definitions of terms are consistent throughout the specification.

[0041] The following will be combined Figures 2A to 2B , describing the overall structure of an isolating switch according to an exemplary embodiment of the present disclosure.

[0042] Figure 2A FIG. 1 shows a schematic diagram of a disconnector 10 according to an exemplary embodiment of the present disclosure. Figure 2A As shown, the isolating switch 10 includes a base 500. In this embodiment, the base 500 is constructed as a box-type structure. The base 500 is installed in a switch cabinet, for example, and the isolating switch 10 is installed in the circuit of the switch cabinet. It should be understood that the structure of the base 500 shown in the present disclosure is only exemplary, and the structure of the base 500 can be adapted according to specific circumstances. In addition, the base 500 can also be a part of a switch cabinet or other electrical equipment using the isolating switch 10. The present disclosure is not intended to limit this.

[0043] The isolating switch 10 further includes a first static contact 100 and a second static contact 200. The first static contact 100 and the second static contact 200 are electrically spaced apart and arranged on one end surface of the base 500. The first static contact 100 and the second static contact 200 extend in a direction R parallel to the base 500. The first static contact 100 and the second static contact 200 are installed on the base 500, for example, by an insulator perpendicular to the mounting surface of the base 500. In order to realize the isolating switch function, the isolating switch 10 further includes a first contact arm 310 and a second contact arm 320. The first contact arm 310 and the second contact arm 320 are rotatably arranged on the second static contact 200. A driving mechanism 510 is also accommodated in the base 500. The driving mechanism 510 is coupled to the first rotating shaft 410 and the second rotating shaft 420 perpendicular to the static contact, and can drive the first rotating shaft 410 and the second rotating shaft 420 to rotate. The first rotating shaft 410 can drive the first contact arm 310, and the second rotating shaft 420 can drive the second contact arm 320. The first rotating shaft 410 and the second contact arm 320 are configured to be able to rotate outwardly away from each other from the connected position of contacting the first stationary contact 100 under the drive of the driving mechanism 510 to reach the disconnected position. The movement of the contact arm will be described below with reference to Figure 3A and Figure 3B Describe in detail.

[0044] exist Figure 2A In the illustrated embodiment, the first stationary contact 100 includes first contact plates 110-1 and 110-2. A connecting plate 120-1 is also provided between the first contact plate 110-1 and the first contact plate 110-2. A contact plate refers to a plate that is in direct contact with a contact arm, usually a copper plate, while a connecting plate refers to a plate that is not in direct contact with a contact arm, usually an aluminum plate. In contrast, the second stationary contact 200 includes second contact plates 210-1 and 210-2. Similarly, a connecting plate 220-1 is also provided between the second contact plate 210-1 and the second contact plate 210-2. The first contact plate 110-1 and the first contact plate 110-2 are aligned with the second contact plate 210-1 and the second contact plate 210-2 in a first direction R, respectively.

[0045] In addition, the first contact arm 310 includes a contact arm plate group 330-1. The contact arm plate group 330-1 includes end contact arm plates 331-1, 331-2 and a middle contact arm plate 332-1. The second contact arm 320 includes a contact arm plate group 330-2. The contact arm plate group 330-2 includes end contact arm plates 331-3, 331-4 and a middle contact arm plate 332-2. The end contact arm plates 331-1 and 331-3 are arranged on the side of the second contact plate 210-1 facing the base 500. The end contact arm plates 331-2 and 331-4 are arranged on the side of the second contact plate 210-2 facing away from the base 500. The middle contact arm plate 332-1 and the middle contact arm plate 332-2 are arranged between the second contact plate 210-1 and the second contact plate 210-2.

[0046] Each contact arm plate group 330 includes two end contact arm plates arranged at the outermost sides of the stationary contact. When the stationary contact includes multiple contact arm plates, the contact arm plate group 330 also includes at least one middle contact arm plate, and the middle contact arm plate and the end contact arm plate are aligned in a direction perpendicular to the stationary contact. It should be understood that "aligned" here only means that the extension directions of the contact arm plates are the same, and their lengths may be different. Although the contact arm plate group in this embodiment includes one middle contact arm plate, it should be understood that the contact arm plate group may also include only the end contact arm without the middle contact arm plate in the case of only one contact plate.

[0047] Figure 2B Shows Figure 2A Schematic diagram of the exploded view of the isolating switch 10 in FIG. Figure 2BAs shown, the first stationary contact 100 is indirectly fixed to the base 500 through the insulator 600. For example, the insulator 600 has threaded holes at both ends, which are not connected in the middle, and are fixed to the stationary contact and the base respectively by fasteners. In this way, electrical insulation can be ensured. It should be understood that other fixing methods are also feasible under the premise of ensuring electrical insulation, and the present disclosure is not intended to limit this. The second stationary contact 200 has a structure similar to the first stationary contact 100. The first rotating shaft 410 and the second rotating shaft 420 extend from the base 500 in a direction perpendicular to the second stationary contact 200 and pass through the second stationary contact 200. The first contact arm 310 and the second contact arm 320 are respectively fixed to the first rotating shaft 410 and the second rotating shaft 420. Figure 2B In the illustrated embodiment, the first rotating shaft 410 and the second rotating shaft 420 have a hexagonal cross section and extend from the end surface of the base 500. Flanges are sleeved on the outer sides of the first rotating shaft 410 and the second rotating shaft 420. The center hole of the flange engages with the outer surface of the rotating shaft and rotates with the rotating shaft. One end of the first connecting member 412 is fixedly connected to the flange on the first rotating shaft 410, and the other end is fixedly connected to the end contact arm plate 331-1 of the first contact arm 310, so that the torque of the rotating shaft can be transmitted to the first contact arm 310. The disconnector 10 also includes a first supporting shaft 413 for supporting the first contact arm 310 and a second supporting shaft 423 for supporting the second contact arm 320. The first contact arm 310 can rotate around the first supporting shaft 413, and the second contact arm 320 can rotate around the second supporting shaft 423. The first supporting shaft 413 and the second supporting shaft 423 are perpendicular and pass through the second stationary contact 200. In this embodiment, the first connecting member 412 and the second connecting member 422 are insulators.

[0048] Figure 3A-3B Schematic diagrams showing a disconnect switch 10 in different states according to an exemplary embodiment of the present disclosure. Figure 3A Shows the on state, such as Figure 3A As shown, the first contact arm 310 and the second contact arm 320 contact the first static contact 100 at the same time. At this time, the first contact arm 310 and the second contact arm 320 are parallel, and there is only a small gap between them. Correspondingly, Figure 3B shows the disconnected state, such as Figure 3BAs shown, driven by the first rotating shaft 410 and the second rotating shaft 420, the first contact arm 310 rotates counterclockwise to the first disconnected position, and the second contact arm 320 rotates clockwise to the second disconnected position. The first disconnected position and the second disconnected position are set according to the requirements for the safety distance between the contact arm and the contact. At this time, the side of the first rotating shaft 410 facing the first static contact 100 is parallel to the chamfered edge of the first static contact 100 close to the first rotating shaft 410. Similarly, the side of the second rotating shaft 420 facing the first static contact 100 is parallel to the chamfered edge of the first static contact 100 close to the second rotating shaft 420. In this way, compared with the existing single-sided transmission contact arm, by setting two contact arms, the double contact arm is reduced in weight due to the reduction in the width of each contact arm, the required driving torque is greatly reduced, the motor size is reduced, and the overall size is reduced.

[0049] Figure 4A Shows Figure 2A Schematic diagram of the contact arm plate group 330 of the disconnector 10 in FIG. In this embodiment, the contact arm plate group 330 includes two end contact arm plates 331-1 and 331-2 located on the outside, and a middle contact arm plate 332-1 in the middle. The end contact arm plates 331-1 and 331-2 have through holes at one end thereof suitable for connecting with a support shaft or a rotating shaft (such as the first rotating shaft 410 in FIG. 2 ), while the middle contact arm plate 332-1 does not have a through hole and is shorter than the other two contact arm plates. In other words, the end contact arm plates located on both sides of the stationary contact are coupled with the rotating shaft to realize transmission. The middle contact arm plate located in the middle is connected to the end contact arm plates on both sides through a contact arm plate connector 333.

[0050] Figure 4B Shows Figure 4A Schematic diagram of the exploded view of the contact arm. Figure 4BAs shown, the end contact arm plate 331-1 includes a fixed plate 3311-1 for connecting to the rotating shaft, a contact plate 3312-1 not connected to the rotating shaft, and a spring 3313-1. The spring 3313-1 is arranged between the fixed plate 3311-1 and the contact plate 3312-1. The middle contact arm plate 332-1 includes two contact plates 3312-2, 3312-3 and a spring 3313-2. Here, the spring 3313-2 is arranged between the two contact plates 3312-2, 3312-3, and can press the contact plates 3312-2, 3312-3 to both sides respectively. Correspondingly, the end contact arm plate 331-2 includes a fixed plate 3311-2, a contact plate 3312-4, and a spring 3313-3. The spring 3313-3 is arranged between the fixed plate 3311-2 and the contact plate 3312-4. All the plates and springs are combined together by the contact arm plate connector 333. In addition, a convex point can be provided at the position of the contact plate 3312 that contacts the static contact to improve the contact between the contact plate and the static contact. The contact arm plate connector 333 includes, for example, a fixing rod, a sleeve, and a pressure plate. In this way, a contact arm with a compact structure that can be used for a multi-contact plate is constructed on the contact plate.

[0051] Figure 5A FIG. 5 shows an overall schematic diagram of a base 500 of an isolating switch according to an exemplary embodiment of the present disclosure. Figure 5A As shown, two through holes are provided on the end surface of the base 500 for installation, and the first rotating shaft 410 and the second rotating shaft 420 extend out from the corresponding through holes. Figure 5A For example, the Figure 2B The first parts of the first rotating shaft 410 and the second rotating shaft 420 correspond to each other.

[0052] Figure 5B Shows Figure 5A Schematic diagram of the interior of the base 500. Figure 5BAs shown, a driving mechanism 510 is arranged inside the base 500. The driving mechanism 510 includes a motor for providing driving force, and an output gear 512 is sleeved on the output shaft 511 of the driving mechanism 510. A first gear 411 is sleeved on the first rotating shaft 410, and a second gear 421 is sleeved on the second rotating shaft 420. The base 500 also includes a transmission mechanism 513 for transmitting the power of the driving mechanism 510 to the rotating shaft. In this embodiment, the transmission mechanism 513 is a secondary gear. The output gear 512 on the output shaft 511 is meshed with the primary gear of the transmission mechanism 513, and the secondary gear of the transmission mechanism 513 is meshed with the second gear 421, so that the torque of the output shaft 511 can be transmitted to the second gear 421 via the transmission mechanism 513, so that the second gear 421 drives the second rotating shaft 421 to rotate. On the other hand, the second rotating shaft 420 is coupled to the first rotating shaft 410 through the meshing of the second gear 421 and the first gear 411, so that the torque is transmitted to the first rotating shaft 410. Here, the first gear 411 and the second gear 421 have the same size and number of teeth. In this way, through the cooperation of multiple gears, the synchronous driving of the two rotating shafts using a single power source is achieved. In addition, compared with the conventional connecting rod operating mechanism, the driving scheme disclosed in the present invention is more compact and stable.

[0053] Figure 6 FIG. 2 shows a schematic diagram of a driving structure according to an exemplary embodiment of the present disclosure. Figure 6 As shown, the driving structure includes a driving mechanism 510 and a transmission mechanism 513. The output gear 512 on the output shaft 511 of the driving mechanism 510 is coupled with the primary gear of the transmission mechanism 513, and the second gear 421 is coupled with the secondary gear of the transmission mechanism 513, and the first gear 411 is meshed with the second gear 421. Here, the size and transmission ratio of each gear can be set according to actual needs, thereby improving the applicability and design flexibility of the driving mechanism 510.

[0054] Figure 7 A schematic diagram of an isolating switch according to an exemplary embodiment of the present disclosure is shown. For the purpose of simplicity, Figure 7 Zhongyu Figure 2A The same components and structures in FIG. 1 are not described in detail here. Figure 7 and Figure 2AThe main difference is that the first static contact 100 also includes a first contact plate 110-3, and the second static contact 200 also includes a second contact plate 210-3. Correspondingly, the contact plate group 330-1 also includes an intermediate contact plate 332-3 and the contact plate group 330-2 also includes an intermediate contact plate 332-4. Here, the first contact plate 110-3, the second contact plate 210-3, the intermediate contact plate 332-3 and the intermediate contact plate 332-4 can be independently installed on the base 500 and realize the isolation switch function. Therefore, these four components can be regarded as an isolation switch layer, so that the isolation switch can be assembled modularly and the number of isolation layers can be selected according to the current requirements. Here, Figure 7 The disconnector shown has three isolation levels, while Figure 2A The isolating switch shown has two isolating layers. In this way, the application of the isolating switch is made easier through modular design.

[0055] Although the claims in this application have been formulated with respect to particular combinations of features, it will be understood that the scope of the present disclosure also includes any novel feature or any novel combination of features disclosed herein, whether explicitly or implicitly or in any generalization thereof, whether or not it relates to the same scheme in any claim currently claimed.

Claims

1. An isolating switch, characterized in that: include: A base (500) adapted to be mounted in an electrical cabinet; A first stationary contact (100) is arranged on the base (500); a second stationary contact (200) arranged on the base (500) at a distance from the first stationary contact (200); A first contact arm (310) rotatably disposed on the second stationary contact (200); a second contact arm (320) rotatably disposed on the second stationary contact (200), the first contact arm (310) and the second contact arm (320) being configured to simultaneously contact the first stationary contact (100) and the second stationary contact (200) to close the disconnector; A first rotating shaft (410) and a second rotating shaft (420) are arranged perpendicular to the second stationary contact (200), and the first rotating shaft (410) is configured to drive the first contact arm (310) to rotate, and the second rotating shaft (420) is configured to drive the second contact arm (320) to rotate, wherein the base (500) comprises a driving mechanism (510), and the driving mechanism (510) is configured to drive the first rotating shaft (410) and the second rotating shaft (420) to rotate, so that the first contact arm (310) and the second contact arm (320) move away from each other in opposite directions, so that the disconnector is disconnected; a first connecting member (412), one end of the first connecting member (412) being fixedly sleeved on the first rotating shaft (410) and the other end of the first connecting member (412) being fixedly connected to the first contact arm (310); and a second connecting member (422), one end of the second connecting member (422) being fixedly sleeved on the second rotating shaft (420) and the other end of the second connecting member (422) being fixedly connected to the second contact arm (320), The first connecting member (412) and the second connecting member (422) are constructed as insulators.

2. The isolating switch according to claim 1, characterized in that: The driving mechanism (510) is coupled to the first rotating shaft (410), the first rotating shaft (410) and the second rotating shaft (420) are coupled, and the driving mechanism (510) is configured to drive the first rotating shaft (410) and the second rotating shaft (420) to rotate synchronously.

3. The isolating switch according to claim 2, characterized in that: The driving mechanism (510) comprises a motor, a first gear (411) is sleeved on the first rotating shaft (410), and a second gear (421) is sleeved on the second rotating shaft (420), the first gear (411) is meshed with the second gear (421), and the driving mechanism (510) drives the second gear (421) via a transmission mechanism (513), wherein the first gear (411) and the second gear (421) have the same size.

4. The isolating switch according to claim 1, characterized in that: The first contact arm (310) comprises a contact arm plate group (330), and the second contact arm (320) comprises a contact arm plate group (330), wherein the contact arm plate group (330) extends along a first direction (R) parallel to the base (500).

5. The isolating switch according to claim 4, characterized in that: The contact arm plate group (330) comprises two end-side contact arm plates (331) respectively located on both sides of the stationary contact and aligned with each other, and the two end-side contact arm plates (331) are fixedly connected via a contact arm plate connecting piece (333).

6. The isolating switch according to claim 5, characterized in that: The end-side contact arm plate (331) comprises a fixed plate (3311) and a contact plate (3312); the fixed plate (3311) is rotatably arranged on the stationary contact; the contact plate (3312) is fixed on the fixed plate (3311) and is located between the fixed plate (3311) and the stationary contact.

7. The isolating switch according to claim 6, characterized in that: A reed (3313) is also provided between the fixed plate (3311) and the contact plate (3312), and the reed (3313) is configured to press the contact plate (3312) so that the contact plate (3312) rests against the stationary contact.

8. The isolating switch according to claim 5, characterized in that: The first stationary contact (100) comprises at least one first contact plate (110), and the second stationary contact (200) comprises at least one second contact plate (210), wherein the first contact plate (110) and the second contact plate (210) extend along the first direction (R) and are aligned in the first direction (R).

9. The isolating switch according to claim 8, characterized in that: At least one first contact plate (110) includes a plurality of first contact plates (110), at least one second contact plate (210) includes a plurality of second contact plates (210), and the contact plate group (330) further includes at least one intermediate contact plate (332) aligned with the end contact plate (331), the at least one intermediate contact plate (332) being fixed on the contact plate connector (333), and a gap for accommodating the intermediate contact plate (332) is formed between two adjacent first contact plates (110) and between two adjacent second contact plates (210).

10. The isolating switch according to claim 9, characterized in that: The intermediate contact arm plate (332) comprises two contact plates (3312) and a reed (3313) located between the two contact plates (3312), wherein the reed (3313) is configured to press the contact plate (3312) so that the contact plate (3312) rests against the stationary contact.

11. The isolating switch according to claim 1, characterized in that: Chamfers are provided at both ends of the edge of the first stationary contact (100) facing the second stationary contact (200).

12. A switch cabinet comprising the disconnector according to any one of claims 1 to 11.

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