A quickly-assembled modular disconnector

Abstract

The application provides a modularized disconnecting switch capable of being quickly assembled, and relates to the technical field of disconnecting switches. The disconnecting switch comprises a switch body, a contact assembly for on-off circuit and a connecting assembly connected with an electric drive mechanism are arranged in the switch body, the contact assembly comprises a sliding groove and a sliding bar sliding in the sliding groove, the inner side of the sliding bar is provided with a second groove, the electric drive mechanism is used for electrically driving the disconnection of the internal circuit of the switch body, the electric drive mechanism is provided with a connecting assembly for being connected with the switch body and an electric driver, the connecting assembly comprises an inner groove arranged on the switch body, a first round port arranged on the inner groove, a protrusion arranged on the electric drive mechanism and a second round port arranged on one side of the protrusion, the shape of the inner groove and the protrusion is matched, and the position of the first round port corresponds to the position of the second round port. When the power supply is electrically and manually connected, the disconnecting switch can be quickly repaired and replaced.

Description

Technical Field

[0001] This application relates to the field of disconnecting switch technology, and in particular to a modular disconnecting switch that can be quickly assembled. Background Technology

[0002] Disconnect switches are important devices for controlling the on / off state of circuits. They are generally installed on every wire before the circuit is connected. They provide a clear disconnect point during circuit maintenance or repair, ensuring complete isolation between the circuit and the power source. They can also quickly disconnect the circuit in emergencies to prevent the escalation of accidents. They are essential equipment in power systems.

[0003] The modular disconnect switches in the existing technology, based on the original manual control of the disconnect switch, add an electric drive part for remote control. The electric drive of the disconnect switch is realized through components such as cranks, gears and drive parts. However, the addition of mechanical parts makes the operation cumbersome. When one part fails, the disconnect switch needs to be separated from the circuit for repair, which makes the installation and maintenance operation complicated.

[0004] Therefore, we provide a modular disconnect switch that can be quickly assembled to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a modular disconnect switch that can be quickly assembled, enabling rapid maintenance and replacement of the disconnect switch when the power supply is electrically or manually switched on.

[0006] The first aspect of the present invention relates to a modular disconnecting switch that can be quickly assembled, characterized in that it includes a switch body, wherein the switch body is provided with a contact assembly for switching circuits and a connecting assembly connected to an electric drive mechanism, the contact assembly includes a slide groove and a slide bar that slides within the slide groove, the inner side of the slide bar is provided with a second groove, the electric drive mechanism is used to electrically drive the disconnection of the internal circuit of the switch body, and the electric drive mechanism is provided with a connecting assembly for connecting to the switch body and an electric drive.

[0007] In some embodiments, the connecting component includes an inner groove disposed on the switch body, a first circular opening disposed on the inner groove, and the connecting component further includes a protrusion constructed on the electric drive mechanism and a second circular opening disposed on one side of the protrusion, the inner groove being fitted with the shape of the protrusion, and the first circular opening being positioned corresponding to the second circular opening.

[0008] In some embodiments, the contact assembly further includes a stationary contact for connecting a circuit, a first opening, and a movable contact plate disposed perpendicular to the length direction of the slide bar. The stationary contact is disposed at both ends of the slide groove, the slide bar is disposed inside the slide groove, and the movable contact plate is disposed inside the first opening of the slide bar.

[0009] In some embodiments, the electric drive includes an interface for accessing a power source and a shielding box disposed inside the electric drive, the shielding box being connected to the interface via wires with a metal mesh sheath.

[0010] In some embodiments, the electric drive further includes a coil and a cylindrical iron core disposed inside the coil, one end of the iron core passing through the first circular opening and the second circular opening, and a baffle extending radially from the end of the iron core away from the first circular opening, with a return spring provided between the baffle and the coil.

[0011] In some embodiments, the shielding box is provided with a protection circuit for current limiting, filtering and conditioning. The shielding box is made of a metal shell and is connected to the coil and the interface respectively through wires braided from metal wires on the outer sheath.

[0012] In some embodiments, the switch body further includes a locking assembly comprising a lever rotatably disposed inside the switch body for actuating the slider, a fixing block constructed on one side of the moving contact plate, and a helical spring connecting the lever and the fixing block, the helical spring providing elastic force for the rotation of the lever.

[0013] In some embodiments, the lever further includes a connecting block disposed on the contact side of the slider, the connecting block being a cylinder with internal concave threads, and the connecting block being rotatably connected to the lever.

[0014] In some embodiments, the end of the iron core furthest from the baffle is connected to the connecting block.

[0015] In some embodiments, the contact assembly further includes a second groove formed at the bottom end of the slider, the second groove providing a passage for the iron core.

[0016] In some embodiments, the electric drive mechanism further includes a snap-fit ​​port disposed on one side of the interface of the electric drive mechanism.

[0017] Based on the above technical solution, the present invention has at least the following beneficial effects: By connecting the electric drive mechanism to the switch body, operators can remotely control the on / off state of the circuit connected to the isolating switch. When installing the electric drive mechanism and the switch body, simply snap the electric drive mechanism onto the switch body, insert the iron core into the coil, and screw the iron core to connect it to the connecting block to complete the installation. Connect the PLC device at the interface to achieve remote control. The device has a simple structure and is easy to install and maintain. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 is a schematic diagram of the external structure of the present invention; Figure 2 is a schematic diagram of the external structure of the switch body of the present invention; Figure 3 is a schematic diagram of the interface side appearance structure of the electric drive mechanism of the present invention; Figure 4 is a schematic diagram of the external structure of the second circular opening side of the electric drive mechanism of the present invention; Figure 5 is a schematic diagram of the internal structure of the present invention; Figure 6 is a schematic diagram of the internal structure of the electric drive mechanism of the present invention; Figure 7 is a schematic diagram of the structure of the iron core and the pawl of the present invention; Figure 8 is a schematic diagram of the engagement port and the electric drive mechanism of the present invention. The reference numerals in the figure are explained as follows: 100. Switch body; 200. Electric drive mechanism; 20. Contact assembly; 21. Slide groove; 22. Slide bar; 23. Stationary contact; 24. First opening; 25. Moving contact plate; 26. Second groove; 30. Engaging assembly; 31. Pulling block; 32. Fixing block; 33. Coil spring; 311. Connecting block; 40. Connecting component; 41. Inner groove; 42. First circular opening; 43. Protrusion; 44. Second circular opening; 50. Electric drive unit; 51. Interface; 52. Shielding box; 53. Coil; 54. Iron core; 55. Baffle plate; 56. Return spring; 57. Locking joint.

[0019] It should be understood that the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Furthermore, the same or similar reference numerals denote the same or similar components. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the accompanying drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] In the relevant technical field, the existing modular disconnect switch is based on the modification of a manual disconnect switch. The manual disconnect switch includes a contact system and a manual operating mechanism that drives the contact system. The manual operating mechanism includes a crank and a micro switch module. The modified component of the manual disconnect switch is an electric module, which includes a transmission mechanism and a drive mechanism. The transmission mechanism is synchronously rotatably connected to the crank, and the drive mechanism includes a power output end. The drive mechanism is poweredly connected to the crank through the power output end and the transmission mechanism.

[0024] During the research process, the inventors discovered that, due to the arrangement of cranks, power output terminals, and drive mechanisms, although the operation of disconnect switches is not limited to manual or electric operation through the transmission and drive mechanisms, the large number of mechanical transmission components leads to cumbersome manufacturing and maintenance operations. In particular, when repairing or replacing parts, multiple parts need to be disassembled, which brings inconvenience to the maintenance operation.

[0025] Based on the above findings, this application proposes a modular disconnecting switch that can be quickly assembled. This disconnecting switch controls the circuit's on / off state by pushing or pulling a lever with a coil. Furthermore, during maintenance, it is not necessary to disconnect the switch body from the circuit; simply disconnect the power supply to the electric actuator and remove the iron core to remove the actuator, facilitating disassembly and maintenance.

[0026] The modular disconnect switch capable of rapid assembly according to some embodiments of the present application will be described in detail below with reference to Figures 1 to 8. The modular disconnect switch capable of rapid assembly according to some embodiments of the present application includes a switch body 100. The switch body 100 is provided with a contact assembly 20 for switching the circuit and a connection assembly 40 connected to an electric drive mechanism 200. The contact assembly 20 includes a slide groove 21 and a slide bar 22 that slides in the slide groove 21. A second groove 26 is disposed on the inner side of the slide bar 22.

[0027] In some embodiments, the electric drive mechanism 200 is used to electrically drive the disconnection of the internal circuit of the switch body 100. The electric drive mechanism 200 is configured with a connection component 40 for connection with the switch body 100 and an electric drive 50.

[0028] In some embodiments, the connecting component 40 includes an inner groove 41 disposed on the switch body 100, a first circular opening 42 disposed on the inner groove 41, and the connecting component 40 further includes a protrusion 43 constructed on the electric drive mechanism 200 and a second circular opening 44 disposed on one side of the protrusion 43. The inner groove 41 is fitted with the shape of the protrusion 43, and the first circular opening 42 corresponds to the position of the second circular opening 44.

[0029] In this embodiment, the electric drive mechanism 200 can be snapped onto the switch body 100 through the inner groove 41 and protrusion 43 on the switch body 100. Through the cooperation of the coil 53 and the iron core 54 in the electric drive mechanism 200, the coil 53 is energized through the interface 51 and the circuit in the shielding box 52. After the coil 53 is energized, it causes a change in the magnetic field and generates electromagnetic force. The iron core 54 has magnetic force. Under the change of the magnetic field of the coil 53, the magnetic domains inside the iron core 54 change, thereby causing the iron core 54 to move. The iron core 54 causes the toggle block 31 to follow the movement of the iron core 54 through the connecting block 311. The toggle block 31 pushes the slider 22 to move along the slide groove 21, so that the moving contact plate 25 is connected or disconnected from the stationary contact 23, thereby realizing the control of the on and off of the isolating switch circuit.

[0030] Referring to Figure 5, in some embodiments, the contact assembly 20 further includes a stationary contact 23 for connecting the circuit, a first opening 24, and a moving contact plate 25 disposed perpendicular to the length direction of the slide bar 22. The stationary contact 23 is disposed at both ends of the slide groove 21, the slide bar 22 is disposed inside the slide groove 21, and the moving contact plate 25 is disposed inside the first opening 24 of the slide bar 22. When the stationary contact 23 contacts the moving contact plate 25, the circuit is connected; when the stationary contact 23 separates from the moving contact plate 25, the circuit is disconnected. The slide groove 21 limits the displacement direction of the slide bar 22 to ensure successful contact between the stationary contact 23 and the moving contact plate 25.

[0031] Referring to Figure 6, in some embodiments, the electric drive 50 includes an interface 51 for connecting to a power source and a shielding box 52 disposed inside the electric drive 50. The shielding box 52 is connected to the interface 51 via a wire with a metal mesh outer sheath. In this embodiment, since the coil 53 generates changing magnetic and electric fields around it when it is energized and de-energized, it will affect the circuit and may damage the circuit in severe cases. Therefore, a metal shielding box 52 is set outside the circuit to isolate the influence of changes in magnetic and electric fields. At the same time, in order to further reduce the influence of magnetic and electric fields, the interface 51, the shielding box 52 and the coil 53 are all connected by wires wrapped with a metal braided mesh outer sheath.

[0032] Referring to Figure 5, in some embodiments, the electric drive 50 further includes a coil 53 and a columnar iron core 54 disposed inside the coil 53. One end of the iron core 54 passes through the first circular opening 42 and the second circular opening 44. A baffle 55 extends radially from the end of the iron core 54 away from the first circular opening 42. A return spring 56 is provided between the baffle 55 and the coil 53. The first circular opening 42 and the second circular opening 44 provide a passage for the connection between the iron core 54 and the lever 31.

[0033] In some embodiments, the shielding box 52 is provided with a protection circuit for current limiting, filtering, and conditioning. The shielding box 52 is made of a metal shell, and the shielding box 52 is connected to the coil 53 and the interface 51 respectively through wires braided from metal wires on the outer sheath. The circuit part inside the shielding box 52 is an H-bridge circuit with current limiting and filtering. The H-bridge circuit can change the direction of current flow, thereby providing current in different directions to the coil 53. The coil 53 changes the direction of the magnetic field under the action of current in different directions, thereby changing the movement direction of the iron core 54 inside the coil 53 by means of electromagnetic force. The iron core 54 controls the on and off of the circuit through the toggle block 31 and the slider 22. The circuit inside the shielding box 52 also includes an amplification circuit that amplifies the current, which can amplify the current from the interface 51, thereby providing a suitable current for driving the coil 53.

[0034] In some embodiments, the switch body 100 further includes a locking assembly 30, which includes a toggle block 31 rotatably disposed inside the switch body 100 for actuating the slider 22, a fixing block 32 constructed on one side of the moving contact plate 25, and a helical spring 33 connecting the toggle block 31 and the fixing block 32. The helical spring 33 provides elastic force for the rotation of the toggle block 31.

[0035] Referring to Figure 8, in some embodiments, the lever 31 further includes a connecting block 311 disposed on the contact side of the slide bar 22. The connecting block 311 is a cylinder with an internal concave thread, and the connecting block 311 is rotatably connected to the lever 31 for connecting to the end of the iron core 54 away from the baffle 55. The connecting block 311 is rotatably connected to the lever 31, and the connecting block 311 and the iron core 54 are connected together by threads. The control of the lever 31 by the iron core 54 is based on this. Since the connecting block 311 and the lever 31 are rotatable, the lever 31 can be driven without changing the direction of movement of the iron core 54. The lever 31 and the end of the slide bar 22 away from the slide groove 21 are rotatably connected together so that the lever 31 can drive the slide bar 22.

[0036] Referring to Figure 5, in some embodiments, the contact assembly 20 further includes a second groove 26 formed near the bottom end of the slider 22, the second groove 26 providing a passage for the iron core 54.

[0037] Referring to Figure 8, in some embodiments, the electric drive mechanism 200 further includes a snap-fit ​​port 57 disposed on one side of the interface 51 of the electric drive mechanism 200, the snap-fit ​​port 57 being used for maintenance and encapsulation of the electric drive 50.

[0038] In this embodiment, the electric drive mechanism 200 is aligned with the inner groove 41 and the protrusion 43, and then installed on the switch body 100. The locking slot 57 is removed, and the iron core 54 is inserted into the coil 53. The iron core 54 passes through the first circular opening 42 and the second circular opening 44 in sequence and connects to the connecting block 311 of the toggle block 31. The iron core 54 and the connecting block 311 are connected by a spiral, and the connecting block 311 and the toggle block 31 are rotatably connected. The locking slot 57 is closed, and the interface 51 is connected to the PLC device box. When the disconnect switch is in the open state, the moving contact plate 25 separates from the stationary contact plate 23. At this time, moving the toggle block 31 pushes the slider 22, causing the moving contact plate 25 to contact the stationary contact plate 23, thus completing the circuit connection. Alternatively, power can be supplied to the interface 51 through the PLC device box. The current flows sequentially through the wire wrapped with a metal sheath, through the shielding box 52, and then through the circuit within the shielding box 52 to the coil 53. The coil 53 is energized, generating a magnetic field that causes the iron core 54 to move, pushing the lever 31 to rotate. This causes the moving contact plate 25 to contact the stationary contact plate 23, connecting the circuit. When it is necessary to disconnect the circuit, the lever 31 can be reversed, causing the lever 31 to move the slider 22, thus separating the moving contact plate 25 from the stationary contact plate 23, completing the power-off operation. When the electric drive mechanism 200 is used for power-off operation, the PLC device box supplies power to the interface 51. The current direction is changed through the shielding box 52, causing the coil 53 to be energized in the reverse direction. This causes the iron core 54 to move in the reverse direction, pulling the lever 31, which in turn moves the slider 22, separating the moving contact plate 25 from the stationary contact plate 23, completing the power-off operation.

[0039] The modular disconnect switch of this embodiment can be quickly assembled. The circuit connected to the disconnect switch can be manually controlled by the switch body alone. Alternatively, the electric drive mechanism can be snapped onto the switch body, and an iron core can be inserted to supply power to the electric drive mechanism. The circuit can be remotely controlled by the electric drive mechanism. The device has a simple structure, is easy to maintain, and is easy to replace.

[0040] Based on the various embodiments of the present invention described above, unless explicitly denied or conflicted, the technical features of one embodiment can be advantageously combined with one or more other embodiments. Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A modular disconnect switch that can be quickly assembled, characterized in that, include: The switch body (100) is provided with a contact assembly (20) for switching the circuit and a connection assembly (40) connected to the electric drive mechanism (200). The contact assembly (20) includes a slide groove (21) and a slide bar (22) that slides in the slide groove (21). The inner side of the slide bar (22) is provided with a second groove (26). An electric drive mechanism (200) is provided for electrically driving the disconnection of the internal circuit of the switch body (100). The electric drive mechanism (200) is equipped with a connection component (40) for connection with the switch body (100) and an electric drive (50). The connecting component (40) includes an inner groove (41) disposed on the switch body (100), a first circular opening (42) disposed on the inner groove (41), and the connecting component (40) also includes a protrusion (43) constructed on the electric drive mechanism (200) and a second circular opening (44) disposed on one side of the protrusion (43). The inner groove (41) matches the shape of the protrusion (43), and the first circular opening... (42) corresponds to the position of the second round opening (44).

2. The modular disconnect switch that can be quickly assembled according to claim 1, characterized in that, The contact assembly (20) further includes a stationary contact (23) for connecting the circuit, a first opening (24) and a moving contact plate (25) arranged perpendicular to the length direction of the slide bar (22). The stationary contact (23) is located at both ends of the slide groove (21), the slide bar (22) is located inside the slide groove (21), and the moving contact plate (25) is located inside the first opening (24) of the slide bar (22).

3. A modular disconnect switch capable of rapid assembly according to claim 2, characterized in that, The electric drive (50) includes an interface (51) for connecting to a power source and a shielding box (52) located inside the electric drive (50). The shielding box (52) is connected to the interface (51) via a wire with a metal mesh sheath.

4. A modular disconnect switch capable of rapid assembly according to claim 3, characterized in that, The electric drive (50) also includes a coil (53) and a columnar iron core (54) disposed inside the coil (53). One end of the iron core (54) passes through the first circular opening (42) and the second circular opening (44). A baffle (55) extends radially from the end of the iron core (54) away from the first circular opening (42). A return spring (56) is provided between the baffle (55) and the coil (53).

5. A modular disconnect switch capable of rapid assembly according to claim 4, characterized in that, The shielding box (52) is equipped with a protection circuit for current limiting, filtering and conditioning. The shielding box (52) is made of metal shell and is connected to the coil (53) and the interface (51) respectively through wires made of metal wire on the outer skin.

6. A modular disconnect switch capable of rapid assembly according to claim 4, characterized in that, The switch body (100) further includes a locking assembly (30), which includes a rotatable block (31) for actuating the slider (22), a fixing block (32) constructed on one side of the moving contact plate (25), and a helical spring (33) connecting the block (31) and the fixing block (32), the helical spring (33) providing elastic force for the rotation of the block (31).

7. A modular disconnect switch capable of rapid assembly according to claim 6, characterized in that, The lever (31) further includes a connecting block (311) disposed on the contact side of the slide bar (22). The connecting block (311) is a column with an internal concave thread, and the connecting block (311) is rotatably connected to the lever (31).

8. A modular disconnect switch capable of rapid assembly according to claim 7, characterized in that, The end of the iron core (54) away from the baffle (55) is connected to the connecting block (311).

9. A modular disconnect switch capable of rapid assembly according to claim 4, characterized in that, The contact assembly (20) further includes a second groove (26) formed at the bottom end of the slider (22), the second groove (26) providing a passage for the iron core (54).

10. A modular disconnect switch capable of rapid assembly according to claim 3, characterized in that, The electric drive mechanism (200) also includes a snap-fit ​​port (57) disposed on one side of the interface (51) of the electric drive mechanism (200).

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