Layout of the measuring switch

Abstract

The application discloses a layout reasonable measuring switch, including plastic shell, which is sequentially provided with operation module, carrier module and measuring module along the length direction. The operation module contains operation handle and several mahogany quality disconnecting pieces, which are assembled in the corresponding disconnecting grooves of the plastic shell and are in transmission connection with the operation handle. The side wall of the disconnecting piece is provided with air blowing port and is provided with air blowing unit in matched mode, which is used for blowing the air flow generated during the disconnection; the plastic shell is provided with swing type air blowing rod at the air blowing port. The operation handle and the plastic shell are provided with swing connection limiting buckle, one end of which is provided with limiting flange to keep the handle closed, and the other end is in abutment with the air blowing rod. In addition, the plastic shell is provided with battery groove beside the carrier module, and the battery compartment is assembled in the groove. The switch has simple structure, compact and reasonable layout, convenient battery compartment use, standard wiring and cabling, effectively reduces the overall volume, and has excellent use effect.

Description

Technical Field

[0001] This invention relates to the field of measurement switch technology, and in particular to a measurement switch with a reasonable layout. Background Technology

[0002] Measuring switches are key components in power systems for energy metering, line control, and signal transmission. They are widely used in low-voltage distribution areas, and their layout and structure directly affect the stability of equipment operation, ease of assembly, and reliability. During operation, the switching contact assembly generates a significant amount of heat when switching current. To ensure overall structural stability, current technologies generally use bakelite as the main structural material. Bakery possesses excellent heat resistance and insulation properties, effectively resisting the heat generated by the contact assembly. However, bakelite processing is complex, difficult to mold, and cannot be reprocessed. Given the limited overall size of the measuring switch, the flexibility of structural design is significantly reduced. Measurement switches typically integrate a carrier module and a battery compartment. The carrier module handles signal transmission and interaction, while the battery compartment provides power. According to PCB layout principles, the battery compartment should be placed close to the carrier module to shorten the electrical connection path and reduce interference. However, existing bakelite main structures are limited by processing performance and size, making it impossible to reserve space for the battery compartment at the edge of the carrier module. The battery compartment must be placed at the operating mechanism location. This not only makes the electrical connection between the battery compartment and the carrier board prone to loosening due to vibration of the operating mechanism, but also results in cumbersome wiring due to the large distance between them, increasing assembly costs and signal interference, reducing equipment reliability, and hindering later maintenance. Furthermore, bakelite has high processing costs and is difficult to recycle, which does not align with the industry trend of energy conservation, environmental protection, and low cost. Conventional plastic shell materials, with excellent processing performance and lower cost, have poor heat resistance and cannot withstand the large amount of heat generated by the contact components, making them difficult to replace bakelite as the main material. In summary, the current measurement switch layout, due to contact heat generation, can only use bakelite with poor processing properties, leading to unreasonable battery compartment placement and difficulties in electrical connection, thus affecting the performance of the measurement switch. Meanwhile, the existing structural layout has a bulky release mechanism design, which makes the overall structure cumbersome, hinders production and processing, affects subsequent maintenance, and reduces the reliability of the structure. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a reasonably laid-out measurement switch with a simple structure, reasonable layout, convenient battery compartment, reasonable wiring connections, and a more compact overall design, reducing the overall size and providing excellent performance.

[0004] To achieve the above objectives, the present invention provides a rationally laid-out measuring switch, including a plastic housing. An operating module, a carrier module, and a measuring module are sequentially arranged along the length of the plastic housing. The operating module includes an operating handle and several disconnecting components. The outer shell of each disconnecting component is made of bakelite. A disconnecting groove is provided on the plastic housing corresponding to the position of the disconnecting component. The disconnecting component is assembled in the disconnecting groove. The operating handle is pulsatorically connected to the disconnecting component. An air blowing port is provided on the side wall of the disconnecting component. A device is provided on the disconnecting component corresponding to the air blowing port for generating a discharge valve when the disconnecting component is tripped. An air blowing unit for blowing out the disconnecting component has an air blowing rod at the air blowing port of the plastic housing. A limit buckle for holding the operating handle in the closed position is provided between the operating handle and the plastic housing. The limit buckle is oscillatingly connected to the plastic housing. A limit flange is provided at one end of the limit buckle near the operating handle, and the other end is provided near the air blowing rod. The air blowing rod is oscillatingly disposed on the plastic housing. One end of the air blowing rod is provided near the air blowing port, and the other end abuts against the limit buckle. A battery slot is provided next to the carrier module in the plastic housing, and a battery compartment is installed in the battery slot.

[0005] The advantages of this design are as follows: Using bakelite to construct the breaker housing effectively isolates the large amount of heat generated during current switching, preventing high temperatures from affecting the external structure and internal electronic components, thus ensuring the structural stability and electrical safety of the measuring switch during long-term operation. Independently assembling the breaker in the plastic housing's slot allows for the use of plastic housing materials with superior processing performance, significantly improving structural layout flexibility while meeting overall size limitations. Simultaneously, directly placing the battery slot and battery compartment next to the carrier module allows for close placement of the battery compartment, effectively shortening the electrical connection distance between the battery compartment and the circuit board, simplifying wiring, reducing assembly difficulty, minimizing signal interference and poor contact risks caused by excessively long wires, and improving the overall operational stability and reliability of the measuring switch. A swing-type limit buckle is added between the operating handle and the plastic housing. The limit buckle's limiting flange at one end forms a stable locking engagement with the operating handle, reliably locking the handle in the closed position. This effectively prevents unexpected tripping due to vibration, collision, accidental contact, or other unforeseen factors during normal operation, ensuring continuous and stable power supply to the circuit and improving the reliability and safety of the closed state. The limit buckle is installed in the plastic housing using a swing connection method, resulting in a simple structure, direct transmission, and sensitive action. The other end precisely engages with the air blower, without occupying additional installation space or affecting the overall compactness of the switch structure. In the event of an overload or short-circuit fault, the high-pressure airflow generated by the air blower unit pushes the air blower to swing. The air blower directly pushes the free end of the limit buckle, causing the limit buckle to rotate rapidly around the hinge point, instantly releasing the limiting constraint on the operating handle and achieving rapid tripping. This linkage structure eliminates the need for complex linkages, gears, or electrical control components, reducing the failure rate of the mechanism, improving the stability and consistency of the tripping action, ensuring reliable switch operation in the event of a fault, and effectively protecting the safety of downstream electrical equipment and lines.

[0006] Furthermore, a carrier circuit board is provided in the plastic shell at the position corresponding to the carrier module, and a main circuit board is provided in the plastic shell at the position corresponding to the measurement module. The carrier circuit board is positioned above the main circuit board. The carrier circuit board and the main circuit board are provided with carrier pins and carrier terminals for connection at the overlapping position. A notch is formed on the carrier circuit board at the position corresponding to the battery compartment to expose the main circuit board. The battery compartment passes through the notch and is electrically connected to the main circuit board.

[0007] The advantages of this design are as follows: The carrier circuit board is stacked on top of the main circuit board, and direct plug-in connection is achieved using carrier pins and connectors, eliminating the need for traditional wire connections. This results in a more compact structure, a more robust and reliable connection, and effectively improves the signal transmission stability between modules. A notch is created on the carrier circuit board corresponding to the battery compartment, allowing the battery compartment to directly connect to the main circuit board through the notch. This further optimizes the power supply path, reduces line loss, minimizes electromagnetic interference, and facilitates assembly and subsequent maintenance, while also improving the integration and operational reliability of the measurement switches.

[0008] Furthermore, a power circuit board is also provided in the plastic shell. The power circuit board is located below the main circuit board, and power supply pins and power supply terminals are provided at the overlapping position of the power circuit board and the main circuit board for connection.

[0009] The advantages of this design are: placing the power supply circuit board below the main circuit board, forming a vertically stacked layout, fully utilizes internal space, reduces the overall size of the measurement switch, and achieves a compact and miniaturized structure. Direct connection between the power supply circuit board and the main circuit board is achieved through power supply pins and terminals, ensuring stable connection and reliable conductivity, avoiding issues such as tangled or loose wires, improving power supply stability, and guaranteeing continuous and stable operation of the measurement switch under complex working conditions. Simultaneously, it simplifies the internal structure and improves production and assembly efficiency.

[0010] Furthermore, a reset spring for resetting the air blower is connected between the end of the air blower near the air blow port and the break-off component.

[0011] The beneficial effects of this design are as follows: A reset spring is connected between the end of the air blower near the air blow port and the disconnecting component. The elastic tension of the reset spring provides a stable and reliable automatic reset function for the air blower, ensuring that it quickly and accurately returns to its initial standby position after completing one tripping action. Simultaneously, it drives the limit switch to reset, restoring the entire operating mechanism to a normal closing state. This ensures the switch can repeatedly perform closing and disconnecting operations, improving the mechanism's cyclical performance. The reset spring structure is compact and easy to install, without altering the original mechanism layout or increasing the overall size, adapting to the miniaturization and compact design requirements of measuring switches. This structure effectively avoids problems such as air blower jamming, elastic fatigue, and assembly deviations that could lead to incomplete reset, and prevents the limit switch from failing to return to its original position, thus preventing the operating handle from failing to close or unreliable closing, significantly improving the stability and consistency of the operating mechanism's actions. Meanwhile, the reset spring can buffer the impact force of the air blow rod swinging, reduce component collision wear, reduce mechanism movement noise, extend the service life of precision moving parts such as air blow rod and limit buckle, improve the overall mechanical life and long-term reliability of the switch, and ensure that the switch maintains stable performance under frequent operation scenarios.

[0012] Furthermore, the air blowing unit includes an air blowing seat and an air blowing pipe embedded in the break-off component. The air blowing pipe is disposed in the air blowing seat. One end of the air blowing pipe is a narrow end with a smaller aperture, and the other end is a thick end with a larger aperture. The narrow end of the air blowing pipe is exposed outside the air outlet, and the thick end of the air blowing pipe is disposed in the break-off component.

[0013] The beneficial effects of this design are as follows: The air blower base and the variable diameter air blower pipe combine to form an air blower unit. One end of the air blower pipe is a narrow end with a smaller orifice, and the other end is a wide end with a larger orifice. Utilizing the Venturi effect, the airflow is pressurized and accelerated, significantly increasing the airflow velocity and pressure at the air blower outlet. The wide end of the air blower pipe is placed inside the breaking component, which can efficiently collect the high-pressure airflow generated during the breaking process. The narrow end is exposed outside the air blower outlet, enabling the airflow to be directionally and concentratedly ejected, ensuring that the airflow accurately acts on the corresponding position of the air blower rod, improving the accuracy and reliability of the trip trigger, and avoiding trigger failure due to airflow dispersion. The air blower base stably embeds the air blower pipe inside the breaking component, ensuring precise positioning and firm assembly, preventing the air blower pipe from shifting, loosening, or falling off under high temperature and vibration environments, and ensuring that the air blowing direction and airflow intensity remain stable and consistent over a long period. The variable diameter air blower pipe has a simple structure and is easy to process. It does not require an additional power source and relies entirely on the energy of the breaking component itself to achieve the air blowing function, reducing energy consumption and structural complexity. This air-blowing unit is compatible with measuring switches of different current levels, making it highly versatile. It also occupies little space, which is conducive to the miniaturization of the breaking components, improves the overall compactness of the switch structure, and enhances product adaptability and market competitiveness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present invention; Figure 3 This is a cross-sectional structural diagram of an embodiment of the present invention; Figure 4 This is a schematic diagram of the circuit board location and structural layout in an embodiment of the present invention; Figure 5 This is a partial enlarged view of the location of the operation module in an embodiment of the present invention; Figure 6 This is a schematic diagram of the cooperation structure between the air blower and the limiting buckle in an embodiment of the present invention. Detailed Implementation

[0015] An example of the implementation of the measurement switch with a reasonable layout in this invention Figures 1 to 6As shown: The system includes a plastic housing 1. Along its length, the plastic housing 1 is sequentially equipped with an operation module 2, a carrier module 3, and a measurement module 4. The operation module 2 includes an operation handle 21 and several disconnecting components 22. The outer shell of each disconnecting component 22 is made of bakelite. A disconnecting groove is provided on the plastic housing 1 corresponding to the position of each disconnecting component 22. The disconnecting components 22 are assembled in the disconnecting groove. The operation handle 21 is kinetically connected to the disconnecting components 22. An air blowing port is provided on the side wall of each disconnecting component 22. An air blowing unit 22 is provided on each disconnecting component 22 at the position corresponding to the air blowing port to blow the airflow generated when the disconnecting component 22 is disconnected out of the disconnecting component 22. 1. The plastic housing 1 has an air blower 222 at the air blow port. A limit buckle 23 is provided between the operating handle 21 and the plastic housing 1 to hold the operating handle 21 in the closed position. The limit buckle 23 is oscillatingly connected to the plastic housing 1. One end of the limit buckle 23 near the operating handle 21 has a limit flange, and the other end is near the air blower 222. The air blower 222 is oscillatingly mounted on the plastic housing 1. One end of the air blower 222 is near the air blow port, and the other end abuts against the limit buckle 23. A battery slot is provided next to the carrier module 3 on the plastic housing 1, and a battery compartment 5 is installed in the battery slot. The beneficial effect of this design is that, by using bakelite to make the outer shell of the disconnector 22, the large amount of heat generated by the disconnector 22 during current switching can be effectively isolated, avoiding the impact of high temperatures on the external structure and internal electronic components, and ensuring the structural stability and electrical safety of the measuring switch during long-term operation. The disconnecting component 22 is independently assembled in the disconnecting slot of the plastic shell 1, allowing the outer body to use the plastic shell 1 material with better processing performance. This significantly improves the flexibility of the structural layout while meeting overall size constraints. Simultaneously, the battery slot and battery compartment 5 are directly set next to the carrier module 3, allowing the battery compartment 5 to be placed close to the carrier module 3. This effectively shortens the electrical connection distance between the battery compartment 5 and the circuit board, simplifies the wiring structure, reduces assembly difficulty, and minimizes the risk of signal interference and poor contact caused by excessively long wires, thus improving the overall operational stability and reliability of the measurement switch. A swing-type limit buckle 23 is added between the operating handle 21 and the plastic shell 1. The limit flange at one end of the limit buckle 23 forms a stable locking engagement with the operating handle 21, reliably locking the operating handle 21 in the closed position. This effectively prevents the switch from unexpectedly tripping due to vibration, collision, accidental contact, or other unexpected factors during normal operation, ensuring continuous and stable power supply to the circuit and improving the reliability and safety of the closed state. The limit buckle 23 is installed on the plastic shell 1 using a swing connection method. It has a simple structure, direct transmission, and sensitive action. The other end is precisely matched with the air blow rod 222. It does not occupy extra installation space and does not affect the overall compactness of the switch structure.When an overload or short-circuit fault occurs, the high-pressure airflow generated by the air-blowing unit 221 pushes the air-blowing rod 222 to swing. The air-blowing rod 222 directly pushes the free end of the limit latch 23, causing the limit latch 23 to rotate rapidly around the hinge point, instantly releasing the limit constraint on the operating handle 21 and achieving rapid tripping. This linkage structure eliminates the need for complex linkages, gears, or electrical control components, reducing the failure rate of the mechanism, improving the stability and consistency of the tripping action, ensuring that the switch can operate reliably when a fault occurs, and effectively protecting the safety of downstream electrical equipment and lines.

[0016] Furthermore, a carrier circuit board 31 is provided in the plastic shell 1 at the position corresponding to the carrier module 3, and a main circuit board 41 is provided in the plastic shell 1 at the position corresponding to the measurement module 4. The carrier circuit board 31 is positioned above the main circuit board 41. The carrier circuit board 31 and the main circuit board 41 have carrier pins and carrier terminals for connection at their overlapping positions. A notch is formed in the carrier circuit board 31 at the position corresponding to the battery compartment 5 to expose the main circuit board 41. The battery compartment 5 passes through the notch and is electrically connected to the main circuit board 41. The beneficial effects of this arrangement are: the carrier circuit board 31 is stacked on top of the main circuit board 41, and the carrier pins and carrier terminals are used to achieve direct plug-in connection, eliminating the need for traditional wire connection methods, making the structure more compact, the connection more robust and reliable, and effectively improving the signal transmission stability between modules. The notch in the carrier circuit board 31 at the position corresponding to the battery compartment 5 allows the battery compartment 5 to pass through the notch and be directly electrically connected to the main circuit board 41, further optimizing the power supply path, reducing line loss, reducing electromagnetic interference, and facilitating assembly and subsequent maintenance, while improving the integration and operational reliability of the measurement switch.

[0017] Furthermore, a power circuit board 6 is also provided in the plastic shell 1. The power circuit board 6 is located below the main circuit board 41, and power supply pins and terminals are provided at the overlapping position of the power circuit board 6 and the main circuit board 41 for connection. The beneficial effects of this arrangement are: placing the power circuit board 6 below the main circuit board 41 forms a vertical stacked layout, which can make full use of the internal space, reduce the overall size of the measuring switch, and achieve a compact and miniaturized structure. The direct connection between the power circuit board 6 and the main circuit board 41 is achieved through the power supply pins and terminals, which ensures stable connection and reliable conductivity, avoids problems such as wire tangling and loosening, improves power supply stability, ensures continuous and stable operation of the measuring switch under complex working conditions, and simplifies the internal structure, thereby improving production and assembly efficiency.

[0018] Furthermore, a reset spring 223 for resetting the air blower 222 is connected between the end of the air blower 222 near the air blow port and the disconnector 22. The beneficial effect of this arrangement is that the reset spring 223, connected between the end of the air blower 222 near the air blow port and the disconnector 22, provides a stable and reliable automatic reset function for the air blower 222 through its elastic tension. This ensures that the air blower 222 can quickly and accurately return to its initial standby position after completing one tripping drive action, simultaneously driving the limit latch 23 to reset synchronously, restoring the entire operating mechanism to a normal closing state. This ensures that the switch can repeatedly perform closing and disconnecting operations, improving the cyclic performance of the mechanism. The reset spring 223 has a compact structure, is easy to install, does not change the original mechanism layout, and does not increase the overall volume, adapting to the miniaturization and compact design requirements of the measuring switch. This structure effectively prevents the air blower 222 from failing to reset due to jamming, elastic fatigue, or assembly deviations, and prevents the limit latch 23 from failing to return to its original position, thus preventing the operating handle 21 from failing to close or closing unreliably. This significantly improves the stability and consistency of the operating mechanism's actions. Simultaneously, the reset spring 223 buffers the impact force of the air blower 222's swing, reducing component collision wear, lowering mechanism noise, extending the service life of precision moving parts such as the air blower 222 and limit latch 23, improving the overall mechanical life and long-term reliability of the switch, and ensuring stable performance even under frequent operation scenarios.

[0019] Furthermore, the air blowing unit 221 includes an air blowing seat and an air blowing pipe embedded in the breaker 22. The air blowing pipe is disposed in the air blowing seat, with one end being a narrow end with a smaller orifice and the other end being a thicker end with a larger orifice. The narrow end of the air blowing pipe is exposed outside the air outlet, while the thicker end is disposed within the breaker 22. The beneficial effects of this arrangement are: the air blowing seat and the variable-diameter air blowing pipe combine to form the air blowing unit 221. The air blowing pipe, with one end being a narrow end with a smaller orifice and the other end being a thicker end with a larger orifice, utilizes the Venturi effect to achieve airflow pressurization and acceleration, significantly increasing the airflow velocity and pressure at the air blowing outlet. The thicker end of the air blowing pipe, placed inside the breaker 22, can efficiently collect the high-pressure airflow generated during the break-up process. The narrow end, exposed outside the air blowing outlet, enables directional and concentrated airflow ejection, ensuring that the airflow accurately acts on the corresponding position of the air blowing rod 222, improving the accuracy and reliability of the trip trigger, and avoiding trigger failure due to airflow dispersion. The air-blowing holder stably embeds the air-blowing tube inside the disconnector 22, ensuring precise positioning and secure assembly. This prevents the air-blowing tube from shifting, loosening, or falling off under high-temperature and vibration environments, guaranteeing long-term stability and consistency in airflow direction and intensity. The variable-diameter air-blowing tube has a simple structure and is easy to manufacture. It requires no additional power source, relying entirely on the disconnector's own energy to achieve the air-blowing function, reducing energy consumption and structural complexity. This air-blowing unit 221 is adaptable to measurement switches of different current levels, offering strong versatility. Its small footprint facilitates the miniaturization of the disconnector 22, improving the overall compactness of the switch structure and enhancing product adaptability and market competitiveness.

[0020] The above examples are merely one preferred embodiment of the present invention. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included within the protection scope of the present invention.

Claims

1. A reasonably laid-out measuring switch, characterized in that: The device includes a plastic housing. Along its length, an operation module, a carrier module, and a measurement module are sequentially arranged on the plastic housing. The operation module includes an operation handle and several disconnecting components. The outer shell of each disconnecting component is made of bakelite. A disconnecting groove is provided on the plastic housing corresponding to the position of the disconnecting component. The disconnecting component is assembled in the disconnecting groove. The operation handle is drively connected to the disconnecting component. An air blowing port is provided on the side wall of the disconnecting component. An air blowing unit is provided on the disconnecting component corresponding to the air blowing port position to blow the airflow generated when the disconnecting component is disconnected out of the disconnecting component. The plastic housing has an air blowing rod at the air blowing port position. A limit buckle for holding the operating handle in the closed position is provided between the operating handle and the plastic housing. The limit buckle is sway-connected to the plastic housing. A limit flange is provided at one end of the limit buckle near the operating handle, and the other end is provided near the air blowing rod. The air blowing rod is sway-mounted on the plastic housing. One end of the air blowing rod is provided near the air blowing port, and the other end abuts against the limit buckle. A battery slot is provided next to the carrier module in the plastic housing, and a battery compartment is installed in the battery slot.

2. The rationally laid-out measuring switch according to claim 1, characterized in that: A carrier circuit board is provided in the plastic shell at the position corresponding to the carrier module, and a main circuit board is provided in the plastic shell at the position corresponding to the measurement module. The carrier circuit board is located above the main circuit board. The carrier circuit board and the main circuit board are provided with carrier pins and carrier terminals for connection at the overlapping position. A notch is formed on the carrier circuit board at the position corresponding to the battery compartment to expose the main circuit board. The battery compartment passes through the notch and is electrically connected to the main circuit board.

3. The rationally laid-out measuring switch according to claim 2, characterized in that: The plastic shell also contains a power circuit board, which is located below the main circuit board. The power circuit board and the main circuit board have power supply pins and plugs for connection at the overlapping position.

4. The rationally laid-out measuring switch according to claim 1, characterized in that: A reset spring for resetting the air blower is connected between the end of the air blower near the air blow port and the broken piece.

5. The rationally laid-out measuring switch according to claim 1, characterized in that: The air blowing unit includes an air blowing seat and an air blowing pipe embedded in the break-off component. The air blowing pipe is disposed in the air blowing seat. One end of the air blowing pipe is a narrow end with a smaller aperture, and the other end is a thick end with a larger aperture. The narrow end of the air blowing pipe is exposed outside the air outlet, and the thick end of the air blowing pipe is disposed in the break-off component.

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