Portable multifunctional meter pen

Abstract

The invention discloses a portable multifunctional meter pen, and relates to the technical field of electric power testing, and the meter pen comprises a meter pen main body and a plurality of detachable test joint modules. The various detachable test connector modules comprise a universal meter pen needle head, an alligator clip type connector, a pressing clip type connector, an experiment terminal jack type connector, a common terminal jack type connector, a double connector, an instrument and meter connecting part and a wire with a threaded interface. The meter pen main body and the common terminal jack type joint are provided with threaded interfaces to support the stacking combination of the test joint module; the two ends of the lead are provided with threaded interfaces, so that the meter pen body and the connectors can be connected, and the efficiency and convenience of electric power testing work are improved.

Description

Technical Field

[0001] This invention relates to the field of power testing technology, specifically a portable multi-functional test probe for everyday power testing. Background Technology

[0002] In power testing, most instruments and meters consist of a meter head, measuring circuit, changeover switch, and test leads. Most test instrument leads typically consist of two simple measuring leads, and the test types are limited. In the testing of various equipment in substations, constantly changing test instrument leads leads to low work efficiency. Moreover, in substations in the field, carrying different test instrument leads is not only troublesome, but also carries the risk of being unable to complete the work properly due to forgetting to bring a certain type of test instrument lead.

[0003] In the prior art, Chinese Patent Publication No. CN 116311046 A discloses a portable multifunctional test pen, which includes a pen barrel, connectors at both the upper and lower ends of the pen barrel, and internal or external threads on the connectors. Connecting rods are spaced apart on the pen barrel, each hinged to the pen barrel and also having internal or external threads. Each connecting rod includes an upper connecting rod and a lower connecting rod. The upper connecting rod is spaced apart at the upper end of the pen barrel, and its upper end is hinged to the pen barrel. The lower connecting rod is spaced apart at the lower end of the pen barrel, and its lower end is hinged to the pen barrel. There is a gap between the upper and lower connecting rods. This utility model has a reasonable and compact structure, is easy to use, and allows for convenient installation of different types of test heads by setting connectors. The hinged connecting rods allow for selection of the required test head according to the actual scenario. This not only makes it easy to carry but also prevents loss, greatly improving work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by disclosing a portable multi-functional test probe, which solves the problems of single function, inconvenience of carrying, and low work efficiency caused by frequent replacement of power test probes.

[0005] To achieve the above objectives, the present invention provides a portable multi-functional probe through the following technical solution, comprising a probe body, a test connector module, and wires;

[0006] One end of the main body of the probe is provided with a first standard threaded interface;

[0007] The wire is provided with a fourth standard threaded interface at both ends to connect to the test lead body;

[0008] The probe body, the test connector module, and the wires are constructed into a modular measurement system through the standard threaded interfaces.

[0009] Each test connector module is equipped with a second standard thread interface that matches the first standard thread interface, so as to achieve a detachable connection with the test lead body.

[0010] The modular measurement system is connected between the probe body and any of the test connector modules via the wires to achieve remote extension of the measurement distance;

[0011] The modular measurement system includes a standard terminal plug connector that serves as an extension transfer module. This connector has a third standard threaded interface for detachably connecting to other test connector modules, thereby enabling the stacking and combination of test connector modules.

[0012] The test connector module has multiple functions that are different and can be replaced independently, including multimeter probes, alligator clip connectors, pressure clip connectors, experimental terminal socket connectors, ordinary terminal socket connectors, dual connectors, and instrument connection parts.

[0013] Furthermore:

[0014] The wire is connected between the probe body and any of the test connector modules, or between two test connector modules, via the fourth standard threaded interfaces at both ends, to achieve remote extension of the measurement distance.

[0015] Furthermore:

[0016] The test connector module integrates a status indicator device.

[0017] The status indicator includes a voltage detection circuit and at least one LED indicator. The voltage detection circuit can drive the LED indicator to display different colors or flashing patterns according to the characteristics of the detected electrical signal.

[0018] Furthermore:

[0019] The status indicator is configured to drive the LED indicator to display a preset corresponding color according to the type of the connected test connector module; wherein:

[0020] When the multimeter probes are connected, the LED indicator light will be solid white.

[0021] When the alligator clip connector is connected, the LED indicator light will be solid blue.

[0022] When the clamp-type connector is connected, the LED indicator light will be solid green.

[0023] When connecting either the experimental terminal socket connector or the ordinary terminal socket connector, the LED indicator light will be solid yellow.

[0024] When the dual connector is connected, the LED indicator light will flash purple alternately.

[0025] When a voltage higher than the safety threshold is detected, the LED indicator will flash red as a warning, regardless of the type of connector connected.

[0026] Furthermore:

[0027] The threaded connection between the probe body and the test connector module is also provided with a coaxial magnetic auxiliary docking mechanism.

[0028] The magnetic assisted docking mechanism consists of a ring magnet disposed on the docking surface. It is used to provide an attractive force before the threads are screwed together to achieve initial alignment and fixation of the interface, and to safely separate the interface when subjected to an axial tensile force exceeding a set threshold.

[0029] Furthermore, the conductor has a retractable winding structure and integrates an automatic winding mechanism.

[0030] Furthermore:

[0031] The grip section of the main body of the pen has a non-circular anti-roll design and is covered with an anti-slip material layer.

[0032] Furthermore:

[0033] The measuring end of the probe body is equipped with an LED for illuminating the measuring area.

[0034] Furthermore:

[0035] The inner side of the clamping arm of the pressure clamp type connector is provided with a cutting edge structure for stripping the insulation layer of the cable.

[0036] Furthermore:

[0037] The dual connector includes a replaceable accessory compartment, allowing adjustment of the spacing or relative angle between the two test endpoints by replacing accessories of different specifications.

[0038] Compared with the prior art, the present invention has the following advantages:

[0039] This invention enables flexible combination and stacking of test connectors through threaded interfaces, allowing users to quickly assemble the required configuration according to on-site needs without carrying multiple independent test leads, reducing the number of tools and the risk of loss. The introduction of wires allows the test lead body to be separated from the test connector, suitable for measurement scenarios at long distances or in confined spaces, expanding the application range. It supports various connector types (such as clip-on, plug-in, and double-connector types), covering various power testing needs such as cable verification, terminal testing, and multi-channel switch quantity testing, making it a multi-purpose device. Quick connector replacement and combination reduce test preparation time, especially suitable for complex environments such as substations and field operations, improving work efficiency and response speed. The use of standardized threaded connections avoids complex mechanical structures (such as hinges), reducing manufacturing costs and maintenance difficulty, while enhancing durability and anti-interference capabilities. The instrument connection part has replaceable adapters, suitable for various instruments, enhancing the equipment's versatility and practicality. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 This is a schematic diagram of each test connector module of the present invention.

[0042] Figure Labels

[0043] 1-Test probe body, 2-Multimeter probe tip, 3-Alligator clip connector, 4-Press-down clip connector, 5-Experimental terminal socket connector, 6-Ordinary terminal socket connector, 7-Double connector, 8-Instrument connection part, 9-Wire, 10-First standard threaded interface, 11-Second standard threaded interface, 13-Third standard threaded interface, 13-Fourth standard threaded interface. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1

[0046] like Figure 1 and Figure 2 As shown, it illustrates the structural diagram of the present invention, including a probe body 1, a test connector module, and a wire 9; one end of the probe body 1 is provided with a first standard threaded interface 10;

[0047] The wire 9 is provided with a fourth standard threaded interface at both ends, which is connected to the probe body 1;

[0048] The probe body 1, the test connector module, and the lead wire 9 are constructed into a modular measurement system through the standard threaded interfaces.

[0049] Each of the test connector modules is provided with a second standard threaded interface 11 that matches the first standard threaded interface 10, so as to achieve a detachable connection with the test lead body 1.

[0050] The modular measurement system is connected between the probe body 1 and any of the test connector modules via the wire 9 to achieve remote extension of the measurement distance;

[0051] The modular measurement system includes a standard terminal plug-in connector 6 as an extension transfer module. This connector is provided with a third standard threaded interface 12 for detachably connecting other test connector modules besides itself, thereby enabling the stacking and combination of test connector modules.

[0052] The test connector module has multiple functions that are different and can be replaced independently, including multimeter probes 2, alligator clip type connectors 3, pressure clip type connectors 4, experimental terminal socket type connectors 5, ordinary terminal socket type connectors 6, double connectors 7, and instrument connection parts 8.

[0053] The lead wire 9 is connected between the probe body 1 and any of the test connector modules, or between two test connector modules, via the fourth standard threaded interfaces 13 at both ends, so as to achieve remote extension of the measurement distance.

[0054] The test connector module integrates a status indicator device.

[0055] The status indicator includes a voltage detection circuit and at least one LED indicator. The voltage detection circuit can drive the LED indicator to display different colors or flashing patterns according to the characteristics of the detected electrical signal.

[0056] The status indicator is configured to drive the LED indicator to display a preset corresponding color according to the type of the connected test connector module; wherein: when the multimeter probe 2 is connected, the LED indicator displays a solid white light;

[0057] When the alligator clip type connector 3 is connected, the LED indicator light will be solid blue;

[0058] When the clamp-type connector 4 is connected, the LED indicator light will be solid green.

[0059] When the experimental terminal socket connector 5 or the ordinary terminal socket connector 6 is connected, the LED indicator light will be solid yellow.

[0060] When the dual connector 7 is connected, the LED indicator light will flash purple alternately.

[0061] When a voltage higher than the safety threshold is detected, the LED indicator will flash red as a warning, regardless of the type of connector connected.

[0062] The threaded connection between the probe body 1 and the test connector module is also provided with a coaxial magnetic auxiliary docking mechanism.

[0063] The magnetic assisted docking mechanism consists of an annular magnet disposed on the docking surface. It provides an attractive force before thread engagement to achieve initial alignment and fixation of the interface, and safely separates the interface when subjected to an axial tensile force exceeding a set threshold. The conductor 9 is a retractable winding structure and integrates an automatic winding mechanism.

[0064] The grip portion of the pen body 1 has a non-circular anti-roll design and is covered with an anti-slip material layer.

[0065] The measuring end of the probe body 1 is integrated with an LED for illuminating the measuring area.

[0066] The inner side of the clamping arm of the pressure clamp type connector 4 is provided with a cutting edge structure for stripping the insulation layer of the cable.

[0067] The dual connector 7 includes a replaceable accessory compartment, allowing adjustment of the spacing or relative angle between the two test endpoints by replacing accessories of different specifications.

[0068] Example 2

[0069] This embodiment demonstrates the safety performance of the modular measurement system in remote, high-voltage, and complex environments.

[0070] Specifically, it includes a probe body 1, a retractable cable lead 9, and a clamp-type connector 4. A complete remote measurement unit is formed by a secure connection between the first standard threaded interface 10 of the probe body 1 and the fourth standard threaded interface 13 at one end of the cable lead 9, followed by a precise connection between the other end of the cable and the second standard threaded interface 11 of the clamp-type connector 4, aided by a magnetic connection mechanism. After connection, the status indicator inside the clamp-type connector 4 is powered on for self-test, and the LED emits a constant green light, clearly indicating that the module is ready and the circuit is clear.

[0071] This configuration proves highly effective in practical scenarios such as the inspection of switchgear in 35kV substations. When testers need to measure the voltage of busbars located on top of the cabinet where live parts are densely packed, they can reliably clamp the clamp-type connector to the busbar test point, and then hold the test leads and retreat to a safe area several meters away to take the reading. This not only fundamentally avoids the risk of electric shock through physical isolation, but also effectively solves the problem of long cables easily getting tangled due to the retractable conductor structure. Combined with the inherent high reliability of the threaded connection, it ensures connection stability and measurement continuity under possible accidental pulling conditions, fully demonstrating the safety advantages of this invention in complex power testing environments.

[0072] Example 3

[0073] This embodiment elaborates on the function of using the extended relay module to achieve complex and multifunctional testing;

[0074] The system consists of a test probe body 1, a standard terminal socket connector 6 serving as an extension transfer module, and a dual connector 7 pre-configured with probe accessories at specific spacing. During connection, the test probe body 1 is first connected to the standard terminal socket connector 6. Then, the dual connector 7 is screwed into the third standard threaded interface 12 of the standard terminal socket connector 6 to complete the second stage of stacking. At this point, the LED of the standard terminal socket connector 6 displays a solid yellow light, while the LED of the dual connector 7 flashes alternately in purple, visually alerting the user that the system is in a multi-channel testing stacking mode. This combination is highly efficient in testing relay modules in industrial control cabinets. Users can connect a single test probe to both terminals of the relay coil to read the voltage, and then, without disassembly, move the entire stacked assembly to its normally open contact terminal for continuity testing. This method combines two independent measurements into one, significantly improving testing efficiency. Simultaneously, by changing the accessories in the dual connector accessory compartment, it can flexibly adapt to test points with different spacings, fully demonstrating the high flexibility and functional expandability brought by the modular stacking design, perfectly solving the functional limitations of traditional test probes in complex testing scenarios.

[0075] Example 4

[0076] This embodiment demonstrates the ability of the present invention to seamlessly integrate with high-end instruments in professional fields requiring high-precision, low-noise measurements;

[0077] Specifically, the system consists of a multimeter probe body 1, a dedicated shielded wire 9, and an instrument connection part 8 (taking a BNC adapter as an example). The multimeter probe body is connected to the BNC adapter via the shielded wire, which can be directly connected to the oscilloscope input channel. In practical applications, such as when a research laboratory needs to capture the high-frequency PWM waveform generated by the IGBT when a frequency converter drives a motor, ordinary multimeter probes are prone to introducing environmental electromagnetic interference, leading to signal distortion. The shielded wire used in this invention has an outer braided mesh that effectively suppresses noise, while the internal core wire ensures high-fidelity signal transmission. Engineers can precisely contact the test point with the multimeter probe tip 2 or the alligator clip connector 3 to obtain a clear and accurate waveform on the oscilloscope for in-depth analysis. This not only meets the professional requirements of high-frequency signal measurement, conveniently bringing laboratory-level measurement accuracy to the field, but also, through a series of instrument connection parts (such as BNC, banana plug, SMA, etc. adapters), makes this invention a portable solution that can universally adapt to various professional testing instruments, demonstrating strong technical advantages in the field of precision measurement.

[0078] Example 5

[0079] This embodiment demonstrates the role of the status indicator device in ensuring operational safety. This function is embedded in any test connector module; taking alligator clip connector 3 as an example, its core is an intelligent system integrating a voltage detection circuit, multi-color LED indicator, and buzzer. Under normal operating conditions, when the connector is connected to a 24V DC safety control line, the voltage detection circuit drives the LED to emit a constant blue light. However, in the event of a misoperation, such as accidental contact with a 380V AC power line, the circuit instantly recognizes that the voltage has far exceeded the safety threshold and immediately triggers a warning mode: the LED indicator flashes red, and the buzzer simultaneously emits a sharp alarm. Furthermore, the integrated overload protection module can automatically cut off the indicator drive to protect internal components when continuous high voltage input occurs; this "silence" itself serves as a fault warning. In complex mixed-line troubleshooting environments, this mechanism provides an audiovisual alarm far exceeding human reaction speed at the moment of high voltage contact, prompting users to immediately take disconnection measures. This upgrades traditional passive protection relying on human experience to active safety protection with proactive equipment warnings, greatly reducing the significant risks caused by accidental contact with high-voltage lines. This demonstrates the innovative breakthrough of this invention in the field of power testing safety.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable multi-functional probe, Its features are: Includes the main body of the test probe (1), the test connector module, and the wires (9); One end of the main body (1) of the probe is provided with a first standard threaded interface (10). The wire (9) is provided with a fourth standard threaded interface at both ends, which is connected to the probe body (1); The probe body (1), the test connector module, and the wire (9) are constructed into a modular measurement system through the standard threaded interfaces. Each of the test connector modules is provided with a second standard threaded interface (11) that matches the first standard threaded interface (10) to achieve a detachable connection with the test lead body (1); The modular measurement system is connected between the probe body (1) and any of the test connector modules via the wire (9) to achieve remote extension of the measurement distance; The modular measurement system includes a standard terminal plug connector (6) as an extension transfer module, which is provided with a third standard threaded interface (12) for detachably connecting other test connector modules besides itself, thereby enabling the stacking and combination of test connector modules; The test connector module has multiple functions that are different and can be replaced independently, including multimeter probes (2), alligator clip connectors (3), pressure clip connectors (4), experimental terminal socket connectors (5), ordinary terminal socket connectors (6), double connectors (7), and instrument connection parts (8).

2. The portable multi-functional probe according to claim 1, Its features are: The wire (9) is connected between the probe body (1) and any of the test connector modules, or between two test connector modules, through the fourth standard threaded interfaces (13) at both ends, so as to achieve remote extension of the measurement distance.

3. The portable multi-functional probe according to claim 1, Its features are: The test connector module integrates a status indicator device. The status indicator includes a voltage detection circuit and at least one LED indicator. The voltage detection circuit can drive the LED indicator to display different colors or flashing patterns according to the characteristics of the detected electrical signal.

4. The portable multi-functional probe according to claim 3, Its features are: The status indicator is configured to drive the LED indicator to display a preset corresponding color according to the type of the connected test connector module; wherein: when the multimeter probe (2) is connected, the LED indicator displays a solid white light; When the alligator clip connector (3) is connected, the LED indicator light is constantly blue; When the pressure clamp type connector (4) is connected, the LED indicator light is constantly lit in green; When the experimental terminal socket connector (5) or the ordinary terminal socket connector (6) is connected, the LED indicator light will be constantly lit in yellow. When the dual connector (7) is connected, the LED indicator light displays in an alternating purple flashing pattern; When a voltage higher than the safety threshold is detected, the LED indicator will flash red as a warning, regardless of the type of connector connected.

5. The portable multi-functional probe according to claim 1, Its features are: The threaded connection between the probe body (1) and the test connector module is also provided with a coaxial magnetic auxiliary docking mechanism; The magnetic assisted docking mechanism consists of a ring magnet disposed on the docking surface. It is used to provide an attractive force before the threads are screwed together to achieve initial alignment and fixation of the interface, and to safely separate the interface when subjected to an axial tensile force exceeding a set threshold.

6. The portable multi-functional probe according to claim 1, Its features are: The conductor (9) is a retractable winding structure and is integrated with an automatic winding mechanism.

7. The portable multi-functional probe according to claim 1, Its features are: The grip section of the main body (1) of the pen has a non-circular anti-roll design and is covered with an anti-slip material layer.

8. The portable multi-functional probe according to claim 1, Its features are: The measuring end of the probe body (1) is equipped with an LED for illuminating the measuring area.

9. The portable multi-functional probe according to claim 1, Its features are: The inner side of the clamping arm of the pressure clamp type connector (4) is provided with a cutting edge structure for stripping the insulation layer of the cable.

10. The portable multi-functional meter pen according to claim 1, Its features are: The dual connector (7) includes a replaceable accessory compartment, which allows for adjustment of the spacing or relative angle between the two test endpoints by replacing accessories of different specifications.

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