A multifunctional pen-shaped multimeter

Abstract

The utility model relates to the technical field of electrical engineering, and discloses a multifunctional pen-shaped multimeter, comprising a circuit integration mechanism, wherein a first protection mechanism and a second protection mechanism for protecting the circuit integration mechanism are respectively arranged on both sides of the circuit integration mechanism, a first detection mechanism for detecting the circuit is arranged at the lower ends of the first protection mechanism and the second protection mechanism, an expansion mechanism for the circuit is arranged on one side of the first protection mechanism and the second protection mechanism, and a docking mechanism for connecting the expansion mechanism is arranged at the upper ends of the first protection mechanism and the second protection mechanism, the first protection mechanism and the second protection mechanism provide solid protection for the circuit and can resist external impact and extrusion, and at the same time, the circuit integration mechanism is manufactured by high-quality materials and processes to ensure the accuracy and stability of the measurement results, and in summary, the multifunctional pen-shaped multimeter has the advantages of compact structure, rich functions, simple operation, strong protection, etc., and is a portable and practical measuring tool.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical engineering, and in particular to a multifunctional pen-shaped multimeter. Background Art

[0002] A multimeter is a multifunctional electronic measuring instrument, which is widely used in electronics, electricity, communications, maintenance and other fields. It is mainly used for DC voltage measurement, AC voltage measurement, DC current measurement, AC current measurement, resistance measurement, capacitance measurement, diode and transistor testing, continuity test and frequency measurement, etc.

[0003] However, in the prior art, common multimeters are large in size and inconvenient to carry in certain application scenarios. This large size not only increases the inconvenience of users during use, but is particularly prominent when it is necessary to frequently move or operate circuits in a small space. Firstly, the large size requires the multimeter to take up more space when carried, and whether it is placed in a tool bag, a backpack or handheld, it will bring additional burden to the user. In outdoor operations, on-site maintenance or emergency situations that require quick response, this inconvenience may seriously affect work efficiency. Secondly, for situations where precision circuits need to be measured, the larger size of the multimeter may become an obstacle to operation. In a small or complex circuit environment, the user may not be able to easily place the multimeter in a suitable position for measurement, which may result in inaccurate measurement or even failure to measure. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a multifunctional pen-shaped multimeter to more accurately solve the problem that the larger size of the multimeter mentioned above makes it take up more space when carried, which will bring additional burden to the user whether it is placed in a tool bag, a backpack or handheld. In outdoor operations, on-site maintenance or emergency situations requiring quick response, this inconvenience may seriously affect work efficiency. Secondly, for occasions where precision circuits need to be measured, the larger size of the multimeter may become an obstacle to operation. In a small or complex circuit environment, the user may not be able to easily place the multimeter in a suitable position for measurement, which may result in inaccurate measurement or even failure to measure.

[0005] The utility model is realized by the following technical solutions:

[0006] The utility model provides a multifunctional pen-shaped multimeter, comprising a circuit integration mechanism, wherein a first protection mechanism and a second protection mechanism for protecting the circuit integration mechanism are respectively arranged on both sides of the circuit integration mechanism, a first detection mechanism for detecting the circuit is arranged at the lower ends of the first protection mechanism and the second protection mechanism, an expansion mechanism for the circuit is arranged on one side of the first protection mechanism and the second protection mechanism, a docking mechanism for connecting the expansion mechanism is arranged at the upper ends of the first protection mechanism and the second protection mechanism, and a button assembly is arranged at one side inside the first protection mechanism.

[0007] Furthermore, the first protective mechanism includes a first protective shell, both sides of the first protective shell are fixedly connected with anti-slip sheets, one of the anti-slip sheets has a plurality of holes arranged and fixedly connected therein, one side of the first protective shell is provided with a battery compartment, two dry batteries are arranged and fixedly connected therein, a back cover is clamped on one side of the first protective shell close to the battery compartment, and the back cover and the first protective shell are detachably connected.

[0008] Furthermore, the second protective mechanism includes a second protective shell, which is fixedly connected to the other side of the first protective shell, an observation hole is opened at the lower part of one side of the second protective shell, an acrylic plate is fixedly sleeved inside the observation hole, and a pen clip is clamped at the upper part of one side of the second protective shell.

[0009] Furthermore, the circuit integration mechanism includes a circuit board, a terminal chip is fixedly and electrically connected to the upper part of one side of the circuit board, a support sheet is fixedly connected to one side of the circuit board, a plurality of contact electrodes are arranged and fixedly connected to one side of the support sheet, a control panel is fixedly connected to the lower part of one side of the circuit board, the control panel is electrically connected to the circuit board, two metal contact sheets are fixedly connected to the upper part of one side of the circuit board, the two metal contact sheets are electrically connected to the circuit board, a positive contact sheet and a negative contact sheet are fixedly connected to the upper and lower ends of the other side of the circuit board, the positive contact sheet and the negative contact sheet extend into the battery compartment respectively, and the positive contact sheet contacts the positive pole of one of the dry battery cells, the negative contact sheet contacts the negative pole of the other dry battery cells, the positive contact sheet and the negative contact sheet are electrically connected to the circuit board, a speaker is fixedly connected to the lower end of the circuit board close to the positive contact sheet, the speaker is electrically connected to the circuit board.

[0010] Furthermore, the first detection mechanism includes a pen cap, which is fixedly connected to the lower ends of the first protective shell and the second protective shell. A lamp bead and a first metal probe are fixedly sleeved inside the pen cap, and the lamp bead and the first metal probe are electrically connected to the circuit board.

[0011] Furthermore, the docking mechanism includes a socket, the socket fixed sleeve is arranged on the upper ends of the first protective shell and the second protective shell, the inner bottom wall of the socket is fixedly connected with the docking sleeve, and the two metal contact sheets are respectively fixedly attached to the inner wall of the docking sleeve.

[0012] Furthermore, the expansion mechanism includes a chassis, a plug is fixedly connected at the center of the lower end of the chassis, the plug is sleeved inside the docking sleeve, the plug and the socket are detachably connected, a pure copper contact head is fixedly connected to the lower end of the plug, the pure copper contact head is electrically connected to two metal contact pieces, a wire is fixedly connected to the upper end of the chassis, one end of the wire is electrically connected to the pure copper contact head, the other end of the wire is fixedly connected to a handle, a second metal probe is fixedly connected to the lower end of the handle, and the second metal probe is electrically connected to the other end of the wire.

[0013] Furthermore, the button assembly includes a silicone sheet, which is fixedly connected to one side of an anti-slip sheet with a plurality of holes, and the other side of the silicone sheet is fitted with one side of a support sheet, and a plurality of silicone buttons are arranged and fixedly connected to one side of the silicone sheet close to the plurality of holes, and the plurality of silicone buttons are respectively slidably sleeved inside the holes, and a plurality of the silicone buttons are fixedly connected to an inner wall with a conductive gel, and the plurality of the conductive gels are respectively electrically connected to a plurality of contact electrodes.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses a multifunctional pen-shaped multimeter which adopts a pen-shaped design, and the overall structure is small and light, which is convenient for users to carry around, and can easily cope with various measurement needs whether in outdoor measurement, maintenance or daily work. Through the cooperation of the circuit integration mechanism and the expansion mechanism, the multimeter can realize various measurement functions, such as voltage, current, resistance, temperature, frequency, etc., and users do not need to carry multiple measurement tools to meet various measurement needs. The button component adopts an intuitive and easy-to-understand layout design, and users can complete the measurement task through simple operation. At the same time, the multimeter is also equipped with a clear display screen and a prompt sound function, which is convenient for users to read data and understand the working status. The first protection mechanism and the second protection mechanism provide solid protection for the circuit, which can resist external impact and extrusion. At the same time, the circuit integration mechanism is manufactured with high-quality materials and processes to ensure the accuracy and stability of the measurement results. In summary, the multifunctional pen-shaped multimeter has the advantages of small structure, rich functions, simple operation, strong protection, etc. It is a portable and practical measuring tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional multifunctional pen-shaped multimeter of the utility model;

[0017] Figure 2It is a three-dimensional disassembled schematic diagram of a multifunctional pen-shaped multimeter of the utility model;

[0018] Figure 3 It is a three-dimensional disassembled schematic diagram of a first protection mechanism of a multifunctional pen-shaped multimeter of the utility model;

[0019] Figure 4 It is a three-dimensional disassembled schematic diagram of a second protection mechanism of a multifunctional pen-shaped multimeter of the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of a circuit integration mechanism of a multifunctional pen-shaped multimeter of the utility model;

[0021] Figure 6 It is a three-dimensional schematic diagram of another viewing angle of a multifunctional pen-shaped multimeter circuit integration mechanism of the utility model;

[0022] Figure 7 It is a schematic diagram of a first detection mechanism of a multifunctional pen-shaped multimeter of the utility model;

[0023] Figure 8 The utility model is a multifunctional pen-shaped universal display schematic diagram.

[0024] The reference numerals are as follows:

[0025] 1. First protection mechanism; 101. First protection shell; 102. Anti-skid sheet; 103. Hole; 104. Battery compartment; 105. Dry cell; 106. Back cover; 2. Second protection mechanism; 201. Second protection shell; 202. Observation hole; 203. Acrylic plate; 204. Pen clip; 3. Circuit integration mechanism; 301. Circuit board; 302. Terminal chip; 303. Support sheet; 304. Contact electrode; 305. Control panel; 306. Metal contact sheet; 307. Positive contact piece; 308, negative contact piece; 309, speaker; 4, first detection mechanism; 401, pen cap; 402, lamp bead; 403, first metal probe; 5, docking mechanism; 501, socket; 502, docking sleeve; 6, expansion mechanism; 601, chassis; 602, plug; 603, pure copper contact head; 604, wire; 605, handle; 606, second metal probe; 7, button assembly; 701, silicone sheet; 702, silicone button; 703, conductive gel. DETAILED DESCRIPTION

[0026] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0027] Please refer to Figure 1 and Figure 2The utility model proposes a technical solution, a multifunctional pen-shaped multimeter, including a circuit integration mechanism 3, a first protection mechanism 1 and a second protection mechanism 2 for protecting the circuit integration mechanism 3 are respectively arranged on both sides of the circuit integration mechanism 3, a first detection mechanism 4 for detecting the circuit is arranged at the lower end of the first protection mechanism 1 and the second protection mechanism 2, an expansion mechanism 6 for the circuit is arranged on one side of the first protection mechanism 1 and the second protection mechanism 2, a docking mechanism 5 for connecting the expansion mechanism 6 is arranged at the upper end of the first protection mechanism 1 and the second protection mechanism 2, a button assembly 7 is arranged at one side of the first protection mechanism 1, the first protection mechanism 1 and the second protection mechanism 2 are respectively located on both sides of the circuit integration mechanism 3, and provide physical protection for the circuit, and they adopt a sturdy and durable It is made of materials that can withstand a certain degree of external impact and extrusion, ensuring that the circuit integration mechanism 3 can work stably in a complex environment. The first detection mechanism 4 is located at the lower end of the first protection mechanism 1 and the second protection mechanism 2. It is a key part of the multimeter for circuit detection. This mechanism includes various sensors and measurement circuits. It can measure electrical parameters such as voltage, capacitance, resistance, and diodes without manually switching gears. The expansion mechanism 6 is located on one side of the first protection mechanism 1 or the second protection mechanism 2, and is used to expand the function of the multimeter. By connecting different expansion mechanisms 6, the multimeter can achieve more measurement functions, such as temperature measurement, frequency measurement, etc. The expansion mechanism 6 is connected to the circuit integration mechanism 3 through the docking mechanism 5 to achieve data transmission and Communication, the docking mechanism 5 is located at the upper end of the first protection mechanism 1 and the second protection mechanism 2, and is used to connect the expansion mechanism 6. It adopts a detachable design, which is convenient for users to connect or disconnect the expansion mechanism 6 as needed. The docking mechanism 5 ensures stable connection and data transmission between the expansion mechanism 6 and the circuit integration mechanism 3 by combining electrical connection and mechanical connection. The button component 7 is located on one side inside the first protection mechanism 1 and is used to control various functions of the multimeter. It includes multiple buttons, each button corresponds to a specific function, such as power on, power off, selection of measurement mode, etc. The measurement mode is selected to switch the mode for measuring some resistors or capacitors that are not commonly used and have small measurement values. The user can easily control the multimeter by pressing the corresponding button. Working status and data measurement, the multifunctional pen-shaped multimeter adopts a pen-shaped design, and the overall structure is small and light, which is convenient for users to carry. Whether it is outdoor measurement, maintenance or daily work, it can easily cope with various measurement needs. Through the cooperation of the circuit integration mechanism 3 and the expansion mechanism 6, the multimeter can realize a variety of measurement functions, such as voltage, resistance, capacitance, diode, etc. Users do not need to carry multiple measuring tools to meet various measurement needs. The button component 7 adopts an intuitive and easy-to-understand layout design. Users can complete the measurement task through simple operation. At the same time, the multimeter is also equipped with a clear display and prompt sound function, which is convenient for users to read data and understand the working status. The first protection mechanism 1 and the second protection mechanism 2 provide solid protection for the circuit.It can resist external impact and extrusion. At the same time, the circuit integration mechanism 3 is made of high-quality materials and processes to ensure the accuracy and stability of the measurement results.

[0028] As an implementation method in this embodiment, Figure 3 As shown, the first protection mechanism 1 includes a first protection shell 101, both sides of the first protection shell 101 are fixedly connected with anti-slip sheets 102, one of the anti-slip sheets 102 is arranged and fixedly connected with a plurality of holes 103, one side of the first protection shell 101 is provided with a battery compartment 104, and the battery compartment 104 is arranged and fixedly connected with two dry batteries 105, and the first protection shell 101 is clamped with a back cover 106 at one side close to the battery compartment 104, and the back cover 106 is detachably connected to the first protection shell 101. The main body of the first protection mechanism 1 is the first protection shell 101, which plays a major role in protection and support. In order to increase the friction between the protection shell and the user's hand or other contact surface, Friction to prevent slipping, anti-skid sheets 102 are fixedly connected on both sides of the first protective shell 101, and the anti-skid sheets 102 on both sides provide good holding stability. Inside one of the anti-skid sheets 102, a plurality of holes 103 are arranged and fixedly connected, and the plurality of holes 103 may be used to install the button assembly 7. A battery compartment 104 is also opened on one side of the first protective shell 101 for storing dry batteries 105. Two dry batteries 105 are arranged and fixedly connected inside the battery compartment 104. The circuit integration mechanism 3 on one side of the first protective mechanism 1 provides necessary electrical energy. The selection of the dry batteries 105 ensures long-lasting power supply and convenient replacement, and the dry batteries 105 use No. 7 batteries.

[0029] As an implementation method in this embodiment, Figure 4As shown, the second protection mechanism 2 includes a second protection shell 201, which is fixedly connected to the other side of the first protection shell 101, an observation hole 202 is opened at the lower part of one side of the second protection shell 201, an acrylic plate 203 is fixedly sleeved inside the observation hole 202, and a pen clip 204 is clamped at the upper part of one side of the second protection shell 201. The second protection mechanism 2 is mainly composed of the second protection shell 201, which is fixedly connected to the other side of the first protection shell 101 of the first protection mechanism 1 to form an integral protection structure. This design not only enhances the stability of the overall structure, but also provides a relatively stable protection performance for the circuit integration mechanism 3. An observation hole 202 is opened at the lower part of one side of the second protection shell 201. This observation hole 202 allows the user to directly observe the circuit integration mechanism 3 without opening the second protection shell 201. The acrylic plate 203 is a transparent and strong material, which can ensure that the user can clearly see the internal situation and prevent external objects or liquids from entering the protective shell, thereby protecting the safety of the circuit integration mechanism 3 between the first protective shell 101 and the second protective shell 201. A pen clip 204 is also clamped on the upper side of the second protective shell 201. The pen clip 204 is designed to facilitate the user to carry and fix. The second protective mechanism 2 provides users with more convenience and practicality through its observation hole 202 and pen clip 204 design. The observation hole 202 allows users to easily view the internal situation, and the pen clip 204 provides users with a convenient way to carry pens. The above structure greatly enhances the practicality and user experience of the second protective mechanism 2.

[0030] As an implementation method in this embodiment, Figure 5 and Figure 6As shown, the circuit integration mechanism 3 includes a circuit board 301, a terminal chip 302 is fixedly and electrically connected to the upper part of one side of the circuit board 301, a support sheet 303 is fixedly connected to one side of the circuit board 301, and a plurality of contact electrodes 304 are arranged and fixedly connected to one side of the support sheet 303, a control panel 305 is fixedly connected to the lower part of one side of the circuit board 301, and the control panel 305 is electrically connected to the circuit board 301, two metal contact sheets 306 are fixedly connected to the upper part of one side of the circuit board 301, and the two metal contact sheets 306 are electrically connected to the circuit board 301, and a positive contact sheet 307 and a negative contact sheet 308 are fixedly connected to the upper and lower ends of the other side of the circuit board 301, respectively, and the positive contact sheet 307 and the negative contact sheet 308 are fixedly connected. 8 extend into the battery compartment 104 respectively, and the positive contact sheet 307 contacts the positive electrode of one of the dry batteries 105, and the negative contact sheet 308 contacts the negative electrode of the other dry battery 105, and the positive contact sheet 307 and the negative contact sheet 308 are electrically connected to the circuit board 301, and a speaker 309 is fixedly connected to the lower end of the circuit board 301 near the positive contact sheet 307, and the speaker 309 is electrically connected to the circuit board 301. The circuit board 301 is the basis of the entire circuit integration mechanism 3, which provides a platform for electrical connection. At the upper position on one side of the circuit board 301, a terminal chip 302 is fixedly electrically connected. The terminal chip 302 is the brain of the device and is responsible for processing data, executing instructions and communicating with external devices. A support sheet 303 is fixedly connected to one side of the circuit board 301. On one side of the support sheet 303, a plurality of contact electrodes 304 are arranged and fixedly connected. The plurality of contact electrodes 304 are used in conjunction with the button assembly 7. A control panel 305 is fixedly connected to the lower position of one side of the circuit board 301. The control panel 305 is electrically connected to the circuit board 301. The user can input instructions or set parameters through the control panel 305 to control the operation of the device. Two metal contact sheets 306 are fixedly connected to the upper position of one side of the circuit board 301. The two metal contact sheets 306 are used in conjunction with the expansion mechanism 6 when in use. The positive contact sheets 306 are fixedly connected to the upper and lower ends of the other side of the circuit board 301. 7 and negative electrode contact sheet 308, the two contact sheets extend into the battery compartment 104 respectively, and contact the dry batteries 105 in the battery compartment 104, the positive electrode contact sheet 307 contacts the positive electrode of one of the dry batteries 105, and the negative electrode contact sheet 308 contacts the negative electrode of the other dry battery 105. This connection method ensures that the circuit integration mechanism 3 can obtain a stable power supply. In order to provide sound feedback or alarm function, a speaker 309 is fixedly connected to the lower end of the circuit board 301 near the positive electrode contact sheet 307. The speaker 309 is electrically connected to the circuit board 301. When the circuit board 301 receives an instruction from the terminal chip 302 or other components, the speaker 309 will make a corresponding sound.

[0031] As an implementation method in this embodiment, Figure 7 As shown, the first detection mechanism 4 includes a pen cap 401, which is fixedly connected to the lower ends of the first protective shell 101 and the second protective shell 201. A lamp bead 402 and a first metal probe 403 are fixedly sleeved inside the pen cap 401. The lamp bead 402 and the first metal probe 403 are electrically connected to the circuit board 301. When the circuit board 301 receives instructions from the terminal chip 302 or other components, it provides electrical energy to the lamp bead 402. Once the electrical energy is received, the lamp bead 402 will light up to provide visual feedback or lighting function. The first metal probe 403 is used in conjunction with the expansion mechanism 6 to detect the electrical properties of external objects or the environment. When the probe contacts an object with specific electrical properties, it will generate an electrical signal, which will then be transmitted to the terminal chip 302 through the circuit board 301. The information is processed by the terminal chip 302 and then transmitted to the control panel 305 by the circuit board 301, so that the user can view it conveniently for corresponding processing or response. The first detection mechanism 4 can be used in a variety of scenarios. For example, it can be used as a simple indicator light to indicate the status or working mode of the device. In addition, it can also be used to detect the presence or position of external objects to achieve more complex interaction or control functions. When using the first detection mechanism 4, care should be taken to avoid applying excessive voltage or current to the lamp bead 402 and the first metal probe 403 to prevent damage or safety issues. At the same time, it is also necessary to ensure that they are in an appropriate temperature and humidity environment when in use.

[0032] As an implementation method in this embodiment, Figure 2 As shown, the docking mechanism 5 includes a socket 501, which is fixedly sleeved on the upper ends of the first protective shell 101 and the second protective shell 201. The inner bottom wall of the socket 501 is fixedly connected to a docking sleeve 502, and two metal contact sheets 306 are respectively fixedly fitted on the inner walls of the docking sleeve 502. When the expansion mechanism 6 is inserted into the socket 501, the pure copper contact head 603 of the plug 602 will form a tight electrical contact with the metal contact sheet 306 inside the docking sleeve 502. This contact ensures that the current or signal can be smoothly transmitted between the external device and the circuit board 301. The circuit board 301 receives the current or signal from the external device through the metal contact sheet 306 and processes or responds as needed. Similarly, the circuit board 301 can also transmit its own current or signal to the expansion mechanism 6 through the metal contact sheet 306. When using the docking mechanism 5, it is necessary to ensure that the connection between the expansion mechanism 6 and the socket 501 is firm and reliable to avoid electrical failures or safety problems caused by poor contact. At the same time, it is also necessary to avoid using the docking mechanism 5 in harsh environments such as humidity and dust to ensure its normal operation and extend its service life.

[0033] As an implementation method in this embodiment, Figure 2As shown, the expansion mechanism 6 includes a chassis 601, a plug 602 is fixedly connected at the center of the lower end of the chassis 601, the plug 602 is sleeved inside the docking sleeve 502, the plug 602 and the socket 501 are detachably connected, a pure copper contact head 603 is fixedly connected to the lower end of the plug 602, the pure copper contact head 603 is electrically connected to the two metal contact sheets 306, a wire 604 is fixedly connected to the upper end of the chassis 601, one end of the wire 604 is electrically connected to the pure copper contact head 603, the other end of the wire 604 is fixedly connected to a handle 605, the lower end of the handle 605 is fixedly connected to a second metal probe 606, the second metal probe 606 is electrically connected to the other end of the wire 604, and the upper end of the chassis 601 A wire 604 is fixedly connected, one end of the wire 604 is electrically connected to the pure copper contact head 603, and the other end is electrically connected to the second metal probe 606 at the lower end of the handle 605. Through this wire 604, the expansion mechanism 6 can transmit the signal from the second metal probe 606 to the circuit board 301, and can also transmit the signal of the circuit board 301 to the second metal probe 606. When using the expansion mechanism 6, it is necessary to ensure that the connection between the plug 602 and the docking sleeve 502 is firm and reliable to avoid electrical failures or safety problems caused by poor contact. At the same time, it is also necessary to avoid using the expansion mechanism 6 in harsh environments such as humidity and dust to ensure its normal operation and extend its service life. In addition, when connecting or disconnecting the expansion mechanism 6, it should be ensured that the device is turned off or in a safe state to avoid accidental electric shock or damage to the device.

[0034] As an implementation method in this embodiment, Figure 8As shown, the button assembly 7 includes a silicone sheet 701, the silicone sheet 701 is fixedly connected to one side of the anti-slip sheet 102 with multiple sleeve holes 103, and the other side of the silicone sheet 701 is in contact with one side of the support sheet 303, and the silicone sheet 701 is arranged and fixedly connected with multiple silicone buttons 702 on one side close to the multiple sleeve holes 103, and the multiple silicone buttons 702 are respectively slidably sleeved inside the sleeve holes 103, and the inner walls of the multiple silicone buttons 702 are fixedly connected with conductive gels 703, and the multiple conductive gels 703 are respectively electrically connected to the multiple contact electrodes 304. Under normal circumstances, the silicone button 702 is not pressed, and the conductive gel 703 and the contact electrode 304 are electrically connected. There is a certain gap, and the circuit is in a disconnected state. When the user presses the silicone button 702, the silicone button 702 will slide down along the sleeve hole 103, and drive the conductive gel 703 to contact the contact electrode 304. At this time, the circuit is closed, and the current or signal can be transmitted to the circuit board 301 through the conductive gel 703 and the contact electrode 304 to trigger the corresponding function. When using the button assembly 7, care should be taken to avoid using it in harsh environments such as moisture and dust to avoid affecting the electrical connection performance of the conductive gel 703 and the contact electrode 304. At the same time, care should also be taken to regularly clean the silicone sheet 701 and the silicone button 702 to keep them in good condition.

[0035] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.

Claims

1. A multifunctional pen-shaped multimeter, comprising a circuit integration mechanism, characterized in that: The first protection mechanism and the second protection mechanism for protecting the circuit integration mechanism are respectively arranged on both sides of the circuit integration mechanism, the first protection mechanism and the second protection mechanism are provided with a first detection mechanism for detecting the circuit at the lower end, the first protection mechanism and the second protection mechanism are provided with an expansion mechanism for the circuit at one side, the first protection mechanism and the second protection mechanism are provided with a docking mechanism for connecting the expansion mechanism at the upper end, and a button assembly is provided on one side inside the first protection mechanism.

2. A multifunctional pen-shaped multimeter according to claim 1, characterized in that: The first protective mechanism includes a first protective shell, both sides of the first protective shell are fixedly connected with anti-slip sheets, one of the anti-slip sheets has a plurality of holes arranged and fixedly connected therein, one side of the first protective shell is provided with a battery compartment, two dry batteries are arranged and fixedly connected therein, a back cover is clamped on one side of the first protective shell close to the battery compartment, and the back cover and the first protective shell are detachably connected.

3. A multifunctional pen-type multimeter according to claim 2, characterized in that: The second protective mechanism includes a second protective shell, which is fixedly connected to the other side of the first protective shell. An observation hole is opened at the lower part of one side of the second protective shell, an acrylic plate is fixedly sleeved inside the observation hole, and a pen clip is clamped at the upper part of one side of the second protective shell.

4. The multifunctional pen-type multimeter according to claim 1, characterized in that: The circuit integration mechanism includes a circuit board, a terminal chip is fixedly and electrically connected to the upper part of one side of the circuit board, a support sheet is fixedly connected to one side of the circuit board, and a plurality of contact electrodes are arranged and fixedly connected to one side of the support sheet, a control panel is fixedly connected to the lower part of one side of the circuit board, and the control panel is electrically connected to the circuit board, two metal contact sheets are fixedly connected to the upper part of one side of the circuit board, and the two metal contact sheets are electrically connected to the circuit board, a positive contact sheet and a negative contact sheet are fixedly connected to the upper and lower ends of the other side of the circuit board, respectively, the positive contact sheet and the negative contact sheet extend into the battery compartment respectively, and the positive contact sheet contacts the positive electrode of one of the dry cell batteries, and the negative contact sheet contacts the negative electrode of the other dry cell batteries, the positive contact sheet and the negative contact sheet are electrically connected to the circuit board, a speaker is fixedly connected to the lower end of the circuit board close to the positive contact sheet, and the speaker is electrically connected to the circuit board.

5. The multifunctional pen-type multimeter according to claim 3, characterized in that: The first detection mechanism includes a pen cap, which is fixedly connected to the lower ends of the first protective shell and the second protective shell. A lamp bead and a first metal probe are fixedly sleeved inside the pen cap, and the lamp bead and the first metal probe are electrically connected to the circuit board.

6. A multifunctional pen-type multimeter according to claim 4, characterized in that: The docking mechanism comprises a socket, the socket fixed sleeve is arranged on the upper ends of the first protective shell and the second protective shell, the inner bottom wall of the socket is fixedly connected with the docking sleeve, and the two metal contact sheets are respectively fixedly attached to the inner wall of the docking sleeve.

7. A multifunctional pen-type multimeter according to claim 6, characterized in that: The expansion mechanism includes a chassis, a plug is fixedly connected at the center of the lower end of the chassis, the plug is sleeved inside the docking sleeve, the plug and the socket are detachably connected, a pure copper contact head is fixedly connected to the lower end of the plug, the pure copper contact head is electrically connected to two metal contact pieces, a wire is fixedly connected to the upper end of the chassis, one end of the wire is electrically connected to the pure copper contact head, the other end of the wire is fixedly connected to a handle, the lower end of the handle is fixedly connected to a second metal probe, the second metal probe is electrically connected to the other end of the wire.

8. The multifunctional pen-type multimeter according to claim 1, characterized in that: The button assembly includes a silicone sheet, which is fixedly connected to one side of an anti-slip sheet with a plurality of holes, and the other side of the silicone sheet is in contact with one side of a support sheet. A plurality of silicone buttons are arranged and fixedly connected to one side of the silicone sheet close to the plurality of holes, and the plurality of silicone buttons are respectively slidably sleeved inside the holes, and a plurality of conductive gels are fixedly connected to the inner walls of the plurality of silicone buttons, and the plurality of conductive gels are respectively electrically connected to a plurality of contact electrodes.

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