Position signal feedback device and isolating switch

Abstract

The utility model relates to a position signal feedback device and an isolating switch, a first positioning column and a second positioning column are arranged on a base to fix a microswitch, compared with a traditional screw fastener positioning mode, the position of the microswitch can be more accurately controlled, a handle is fixed in the base through a handle mounting column, and the position of the microswitch is more accurate. The handle mounting column is arranged on the base, the torsion spring is wound on the handle mounting column, the handle can be firmly mounted on the base, stable elastic support is provided for resetting and action of the handle due to the existence of the torsion spring, and the pressing plate is formed on the side, corresponding to the microswitch, of the handle mounting end. The handle can accurately drive the pressing plate to act under the action of the torsion spring, so that the pressing plate reliably presses or is far away from the operation button of the microswitch, thereby ensuring that the common end of the microswitch can be accurately closed with the opening signal contact or the closing signal contact, and realizing accurate position signal feedback.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a position signal feedback device and a disconnecting switch. Background Technology

[0002] In power systems and various electrical equipment, disconnect switches are crucial switching devices, and accurate monitoring and feedback of their operating status are essential. Accurate position signal feedback ensures that operators can promptly understand whether the disconnect switch is open or closed, thereby guaranteeing the safe and stable operation of the power system.

[0003] However, traditional disconnector switch position signal feedback devices have many problems. Regarding the accuracy of position signal feedback, some devices suffer from insufficient precision in the fixing method of the microswitch, resulting in the microswitch's operating button not being triggered in a timely and accurate manner when the disconnector switch's state changes. This leads to signal feedback errors, making it impossible for operators to accurately grasp the actual state of the disconnector switch and increasing the operational risks of the power system. In terms of structural stability, the handle installation method of some feedback devices is not secure enough, making it prone to loosening or shaking during use, affecting the reliability of signal feedback. At the same time, as a key component providing the handle's reset and actuation elasticity, unstable installation of the torsion spring can also lead to insensitive handle operation, failing to guarantee the accurate action of the pressure plate on the microswitch's operating button. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a position signal feedback device and disconnect switch that can accurately feed back position signals, has a stable and reliable structure, is easy to install and maintain, and is highly adaptable.

[0005] In a first aspect, this utility model provides a position signal feedback device, including a base and a cover plate covering the base. The base has a built-in micro switch, a torsion spring, and a handle. The base is provided with a first positioning post, a second positioning post, and a handle mounting post. The micro switch is fixed in the base by the first positioning post and the second positioning post. The handle is fixed in the base by the handle mounting post. A torsion spring is wound around the handle mounting post. The torsion spring is located at one end of the handle. The handle includes a handle end and a mounting end. The handle end extends to the outside through the gap formed at the connection between the base and the cover plate. The mounting end has a mounting groove corresponding to the position of the handle mounting post. A pressure plate is formed on the side of the mounting end corresponding to the micro switch.

[0006] The advantages of the above structure are as follows: By setting the first and second positioning posts on the base to fix the micro switch, the position of the micro switch can be controlled more precisely compared with the traditional screw fastener positioning method. The handle is fixed in the base by the handle mounting post, and a torsion spring is wound on the handle mounting post, which can make the handle firmly installed on the base. At the same time, the presence of the torsion spring also provides stable elastic force support for the reset and operation of the handle. A pressure plate is formed on the side of the handle mounting end corresponding to the micro switch. When the disconnecting switch is in different states, the handle can accurately drive the pressure plate to move under the action of the torsion spring, so that the pressure plate can reliably press or move away from the operating button of the micro switch, thereby ensuring that the common terminal of the micro switch can accurately close with the open signal contact or the close signal contact, realizing accurate position signal feedback. The pressure plate of the handle indirectly contacts the operating button of the micro switch, which can reduce the impact force on the operating button of the micro switch while ensuring good signal transmission.

[0007] This utility model further features an operating button on one side of the pressure plate corresponding to the handle mounting end of the micro switch. The micro switch has a common pin terminal, a trip signal contact, and a closing signal contact on the opposite side of the operating button. Positioning grooves are provided on both the first and second positioning posts of the micro switch. A partition plate is provided on the side of the base corresponding to the common pin terminal, trip signal contact, and closing signal contact of the micro switch. By providing an operating button on one side of the pressure plate corresponding to the handle mounting end of the micro switch, it precisely cooperates with the pressure plate. When the handle is moved, the pressure plate accurately acts on the operating button, ensuring timely and accurate signal triggering and improving the accuracy of position signal feedback. The common pin terminal, trip signal contact, and closing signal contact on the opposite side of the operating button clearly define the function and position of each contact, facilitating accurate differentiation of the trip and closing states of the isolating switch, further ensuring the accuracy of signal feedback.

[0008] This utility model is further configured such that a first hook point and a second hook point are formed at both ends of the torsion spring, and hook blocks are provided on the base at the corresponding positions of the first and second hook points of the torsion spring. By setting the first and second hook points at both ends of the torsion spring and the corresponding hook blocks on the base, the torsion spring can be accurately positioned on the hook blocks during installation. The installation process is simple and direct, requiring no complicated operations or additional tools, greatly improving the ease of installation.

[0009] This utility model is further configured such that the base has a first mounting hole corresponding to the cover plate, and the cover plate has a second mounting hole corresponding to the first mounting hole. The cover plate and the base are fixed together by screws passing through the second mounting hole and the first mounting hole in sequence. By using only the corresponding mounting holes on the base and cover plate, the processing technology is mature and low-cost. Compared to complex connection methods such as snap-fit ​​and welding, it has lower requirements for processing equipment and processes, thus improving production efficiency and reducing production costs.

[0010] Secondly, this utility model provides a disconnecting switch, including a housing. The housing includes a main shaft and a position signal feedback device as described in any of the above technical solutions. Top plates are symmetrically arranged on both sides of the main shaft. When the disconnecting switch is in the open state, the top plates and the handle of the position signal feedback device are in a relative position, the torsion spring is in a free state, forcing the handle to press down, and the pressure plate at the handle mounting end presses down on the operating button of the micro switch, so that the common terminal of the micro switch closes with the open signal contact. When the disconnecting switch is in the closed state, the relative position of the top plates and the handle of the position signal feedback device changes, the torsion spring is in a compressed state, forcing the handle to move up, and the pressure plate at the handle mounting end moves away from the operating button of the micro switch, so that the common terminal of the micro switch closes with the closed signal contact. By symmetrically arranging top plates on both sides of the main shaft and forming a specific positional relationship with the handle of the position signal feedback device, the relative position change of the top plate and the handle can accurately trigger the position signal feedback device in both the open and closed states of the disconnecting switch. When the switch is open, the top plate and the handle are in a relative position, and the handle is pressed down under the action of the torsion spring. The pressure plate presses down on the operating button, causing the common terminal to close with the open signal contact. When the switch is closed, the relative position changes, and the handle moves up under the pressure of the torsion spring. The pressure plate moves away from the operating button, causing the common terminal to close with the close signal contact. This achieves a precise correspondence between the disconnecting switch state and the signal feedback, avoids signal feedback errors, and ensures that operators can accurately grasp the actual state of the disconnecting switch. Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of the position signal feedback device according to an embodiment of the present invention.

[0012] Figure 2 This is an exploded schematic diagram of the position signal feedback device according to an embodiment of the present invention.

[0013] Figure 3 This is a schematic diagram of the open position of the position signal feedback device inside the disconnecting switch according to an embodiment of this utility model.

[0014] Figure 4 This is a diagram showing the tripping state of the signal feedback device according to an embodiment of the present invention.

[0015] Figure 5 This is a schematic diagram of the closed position of the position signal feedback device inside the disconnecting switch according to an embodiment of this utility model.

[0016] Figure 6 This is a diagram showing the closed state of the signal feedback device according to an embodiment of this utility model. Detailed Implementation

[0017] like Figures 1-6As shown, an embodiment of this utility model provides a position signal feedback device, including a base 1 and a cover plate 2 covering the base 1. The base 1 has two first mounting holes 11 corresponding to the cover plate 2, and the cover plate 2 has second mounting holes 21 at positions corresponding to the first mounting holes 11. The cover plate 2 and the base 1 are fixed together by screws passing through the second mounting holes 21 and the first mounting holes 11 in sequence. The base 1 contains a micro switch 3, a torsion spring 4, and a handle 5. The base 1 is provided with a first positioning post 12, a second positioning post 13, and a handle mounting post 14. The micro switch 3 is fixed to the base 1 by the first positioning post 12 and the second positioning post 13. Inside, the handle 5 is fixed to the base 1 by the handle mounting post 14. A torsion spring 4 is wound around the handle mounting post 14. The torsion spring 4 is located at the lower end of the handle 5. The two ends of the torsion spring 4 are respectively formed with a first hook point 41 and a second hook point 42. The base 1 is provided with hook blocks 15 at the positions corresponding to the first hook point 41 and the second hook point 42 of the torsion spring 4. The handle 5 includes a handle end 51 and a mounting end 52. The handle end 51 extends to the outside through the gap formed at the connection between the base 1 and the cover plate 2. The mounting end 52 is provided with a mounting groove 521 at the position corresponding to the handle mounting post 14. A pressure plate 522 is formed on the side of the mounting end 52 corresponding to the micro switch 3.

[0018] The micro switch 3 has an operation button 31 on one side of the pressure plate 522 corresponding to the mounting end 52 of the handle 5. The micro switch 3 has a common pin terminal 32, a trip signal contact 33, and a closing signal contact 34 on the opposite side of the operation button 31. The common pin terminal 32, trip signal contact 33, and closing signal contact 34 of the micro switch 3 are connected to an external signal processing circuit through wires. When the common terminal 32 is closed with the corresponding contact, the trip or closing status signal is transmitted to the external device. The micro switch 3 has a positioning groove 35 at the position corresponding to the first positioning post 12 and the second positioning post 13. The base 1 has two partition plates 16 on one side corresponding to the common pin terminal 32, trip signal contact 33, and closing signal contact 34 of the micro switch 3 to isolate the electrical contacts and prevent signal interference.

[0019] Based on the structural design of the aforementioned position signal feedback device, this utility model also provides a disconnecting switch including the device. The structure and working principle of the disconnecting switch are described in detail below. The disconnecting switch includes a housing 6, within which a main shaft 61 and a position signal feedback device are included. The position signal feedback device is the same as the one provided in the above embodiment, with one device installed on each of the left and right sides inside the housing 6. Top plates 611 are symmetrically arranged on both sides of the main shaft 61. When the disconnecting switch is in the open state, the main shaft 61 is in a specific position, and the symmetrical top plates 611 on both sides are vertically opposite the handle 5 of the position signal feedback device. The torsion spring 4 is in a free state, and its elastic force compresses the handle. When handle 5 is pressed down, the pressure plate 522 of the mounting end 52 of handle 5 presses down on the operating button 31 of micro switch 3, causing the common terminal 32 of micro switch 3 to close with the trip signal contact 33. The position signal feedback device outputs a trip status signal. When the disconnecting switch switches from the trip state to the close state, the main shaft 61 rotates, causing the positions of the top plates 611 on both sides to change, thereby changing the relative position of the top plates 611 and the handle 5 of the position signal feedback device. The torsion spring 4 is in a compressed state, and its elastic force forces the handle 5 to move upward. The pressure plate 522 of the mounting end 52 of handle 5 moves away from the operating button 31 of micro switch 3, causing the common terminal 32 of micro switch 3 to close with the close signal contact 34. The position signal feedback device outputs a close status signal.

[0020] Of course, in addition to the above embodiments, this utility model may have other various embodiments. Without departing from the essential technical solution of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, and these changes or modifications are equivalent to the technical solution in this patent. Therefore, these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model, and the utility model creation is in line with the applicant's actual R&D capabilities and resource conditions.

Claims

1. A position signal feedback device, characterized in that: The device includes a base and a cover plate placed on the base. The base houses a micro switch, a torsion spring, and a handle. The base is provided with a first positioning post, a second positioning post, and a handle mounting post. The micro switch is fixed inside the base by the first and second positioning posts, and the handle is fixed inside the base by the handle mounting post. A torsion spring is wound around the handle mounting post and is located at one end of the handle. The handle includes a handle end and a mounting end. The handle end extends to the outside through a gap formed at the connection between the base and the cover plate. The mounting end has a mounting groove corresponding to the position of the handle mounting post, and a pressure plate is formed on the side of the mounting end corresponding to the micro switch.

2. The position signal feedback device according to claim 1, characterized in that: The micro switch has an operation button on one side of the pressure plate corresponding to the handle mounting end. The micro switch has a pin common terminal, a trip signal contact, and a closing signal contact on the opposite side of the operation button. The micro switch has a positioning groove at the position corresponding to the first positioning post and the second positioning post. The base has a partition plate on one side corresponding to the pin common terminal, trip signal contact, and closing signal contact of the micro switch.

3. The position signal feedback device according to claim 1, characterized in that: The torsion spring has a first hook point and a second hook point at its two ends, and the base is provided with hook blocks at the positions corresponding to the first hook point and the second hook point of the torsion spring.

4. The position signal feedback device according to claim 1, characterized in that: The base has a first mounting hole corresponding to the cover plate, and the cover plate has a second mounting hole corresponding to the first mounting hole. The cover plate and the base are fixed together by screws passing through the second mounting hole and the first mounting hole in sequence.

5. A disconnecting switch, characterized in that: The device includes a housing, within which is a main shaft and a position signal feedback device as described in any one of claims 1-4. Top plates are symmetrically arranged on both sides of the main shaft. When the disconnecting switch is in the open state, the top plates and the handle of the position signal feedback device are in a relative position, the torsion spring is in a free state, forcing the handle to press down. The pressure plate at the handle mounting end presses down on the operating button of the micro switch, causing the common terminal of the micro switch to close with the open signal contact. When the disconnecting switch is in the closed state, the relative position of the top plates and the handle of the position signal feedback device changes, the torsion spring is in a compressed state, forcing the handle to move upward, and the pressure plate at the handle mounting end moves away from the operating button of the micro switch, causing the common terminal of the micro switch to close with the closed signal contact.

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