Meter pen of measuring instrument and universal meter

Abstract

The utility model relates to the technical field of measuring instruments, in particular to a meter pen of a measuring instrument and a universal meter. The meter pen of the measuring instrument comprises a meter pen body, a probe, a connecting line, at least one supporting piece and at least one fixing piece, one end of the connecting line is used for being connected with the measuring instrument, the other end of the connecting line is connected with the meter pen body through the supporting piece, the probe is connected with the meter pen body, and the probe is used for making contact with measured equipment. Therefore, the tested equipment, the meter pen and the measuring instrument form a loop. When the voltage of the air switch in the back row of the direct current side of the inverter is measured, an operator can hold the side, far away from the meter pen body, of the supporting piece, so that the voltage of the air switch in the back row is conveniently measured, meanwhile, the hand of the operator is not prone to touching the charged air switch in the front row, and the safety of using the meter pen is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of measuring instruments, in particular to a meter pen of a measuring instrument and a multimeter. BACKGROUND

[0002] The photovoltaic power station inverter usually adopts a distributed inverter. In the fault handling process of the inverter, a multimeter needs to be used to measure the voltage of the air switch on the direct current side of the inverter, so as to judge the insulation condition of the air switch. The air switch on the direct current side of the inverter is provided with multiple air switches and arranged in front and back double rows, and each row has multiple air switches arranged in a matrix.

[0003] In the prior art, the multimeter includes a meter head, two meter pens and two meter lines. One end of each of the two meter lines is connected with the meter head, and the other end of each of the two meter lines is connected with a corresponding meter pen. The meter pen is provided with a probe. When measuring the voltage of the air switch, the two meter pens are held respectively, and the two probes are brought into contact with the positive and negative poles of the air switch respectively, so that the measured voltage value can be read on the meter head.

[0004] However, due to the shielding of the air switches in the front row, when measuring the voltage of the air switches in the rear row, the operator needs to hold the meter pen and extend the meter pen between the two adjacent air switches in the front row, so that the probe is not easy to contact with the air switches in the rear row, and the hand is easy to touch the air switches in the front row which are electrified, and the safety is poor. Utility model content

[0005] The present application provides a meter pen of a measuring instrument and a multimeter, to solve the problem that in the prior art, when measuring the voltage of the air switches in the rear row, the probe is not easy to contact with the air switches in the rear row, and the hand is easy to touch the air switches in the front row which are electrified, and the safety is poor.

[0006] In one aspect, the present application provides a meter pen of a measuring instrument, which includes a meter pen body, a probe, a connecting line, at least one support and at least one fixing member. One end of the connecting line is used to be connected with the measuring instrument, the other end of the connecting line is connected with the meter pen body through the support, the probe is connected with the meter pen body, the probe is used to contact with a measured device, so that the measured device, the meter pen and the measuring instrument form a loop, the fixing member is arranged on at least one of the connection between the support and the meter pen body and the connection between the support and the connecting line, to connect the support and the meter pen body, and / or connect the support and the connecting line.

[0007] In some technical solutions of the above-mentioned meter pen of a measuring instrument, the fixing member is a fixing tape.

[0008] In some technical solutions of the above-mentioned meter pen of a measuring instrument, the fixing member is an insulating tape.

[0009] In some of the above technical solutions of the meter pen, the support comprises a first housing and a second housing arranged oppositely, and the first housing and the second housing are connected to form a receiving cavity.

[0010] One end of the first housing and one end of the second housing are provided with a first notch, and the other end of the first housing and the other end of the second housing are provided with a second notch, two first notches are connected to form a first insertion hole, and part of the pen body is inserted into the receiving cavity through the first insertion hole, and two second notches are connected to form a second insertion hole, and part of the connecting line is inserted into the receiving cavity through the second insertion hole and connected with the pen body.

[0011] In some of the above technical solutions of the meter pen, at least one annular groove is arranged on the side of the pen body, the first notch abuts with the groove bottom of the annular groove, so that the first housing and the second housing are clamped on the annular groove, and the first notch and the annular groove form the fixing part.

[0012] In some of the above technical solutions of the meter pen, the number of the annular grooves is at least two, each annular groove is arranged at intervals along the extension direction of the pen body, and each annular groove is parallel to each other.

[0013] In some of the above technical solutions of the meter pen, the first housing is provided with at least one first clamping part on both sides along the extension direction of the first housing, the second housing is provided with at least one second clamping part on both sides along the extension direction of the second housing, and the first clamping part and the second clamping part are clamped one by one.

[0014] In some of the above technical solutions of the meter pen, one side of the first housing along the extension direction of the first housing is rotationally connected with one side of the second housing along the extension direction of the second housing.

[0015] On the other hand, the application provides a multimeter, comprising a multimeter body and at least two meter pens of any of the above measuring instruments connected with the multimeter body.

[0016] In some of the above technical solutions of the multimeter, at least two third clamping parts are arranged on the multimeter body, and the support of the meter pen of the measuring instrument is clamped with the third clamping part.

[0017] The application provides a meter pen and a multimeter. The meter pen comprises a meter pen body, a probe, a connecting wire, at least one supporting piece and at least one fixing piece. The supporting piece is connected between the meter pen body and the connecting wire, the connecting wire is connected to the measuring instrument, and the fixing piece is arranged at least one of the connection between the supporting piece and the meter pen body and the connection between the supporting piece and the connecting wire. When the meter pen is used, the operator can hold the meter pen body or the supporting piece, which is longer than the meter pen body in the prior art, and the length of the supporting piece can be adjusted by adjusting the number of the supporting pieces, so that part of the supporting pieces are located outside the front row of air switches when the probe contacts the rear row of air switches. When measuring the voltage of the rear row of air switches on the direct current side of the inverter, the operator can hold the supporting piece away from the probe, so that the probe is more convenient to contact the rear row of air switches between the two adjacent air switches in the front row, thereby making the measurement of the voltage of the rear row of air switches more convenient. Meanwhile, the operator's hand is less likely to touch the front row of air switches, thereby improving the safety of using the meter pen. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0019] Figure 1 Fig. 1 is a structural schematic diagram of a meter pen of a measuring instrument according to an embodiment of the application;

[0020] Figure 2 Fig. 2 is a structural schematic diagram of a meter pen body, a probe and a connecting wire in the meter pen of Fig. 1; Figure 1

[0021] Figure 3 Fig. 3 is a structural schematic diagram of a supporting piece in the meter pen of Fig. 1; Figure 1

[0022] Figure 4 Fig. 4 is another structural schematic diagram of the supporting piece in the meter pen of Fig. 1; Figure 1

[0023] Figure 5 Fig. 5 is a structural schematic diagram of another meter pen of a measuring instrument according to an embodiment of the application.

[0024] The above drawings have shown the specific embodiments of the application, and the following will have a more detailed description. The drawings and the written description are not intended to limit the scope of the concept of the application by any means, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments.

[0025] Explanation of reference signs:

[0026] 100 - meter pen body;

[0027] ​​​110 - annular groove

[0028] 200 - probe

[0029] 300 - connecting line

[0030] 310 - mounting portion

[0031] 400 - support

[0032] 410 - first housing

[0033] 420 - second housing

[0034] 430 - first notch

[0035] 440 - second notch

[0036] 500 - fixing member DETAILED DESCRIPTION

[0037] The exemplary embodiments will be described in detail below with reference to the drawings. In the following description, the same drawings reference numerals are used to refer to elements having the same or similar functions. The embodiments described in the following exemplary embodiments do not represent all the implementations consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0038] In the prior art, multiple air switches are arranged on the direct current side of the inverter, and a front and rear double-row arrangement is adopted, and each row has multiple air switches arranged in a matrix. The multimeter includes a meter head, two meter pens, and two meter wires, one end of the two meter wires is connected with the meter head, and the other end of the two meter wires is connected with the corresponding two meter pens respectively, and the meter pen has a probe. When measuring the voltage of the air switch, the two meter pens are held respectively, and the two probes are respectively contacted with the positive and negative electrodes of the air switch, so that the measured voltage value can be read on the meter head.

[0039] However, when measuring the voltage of the air switch in the rear row, the operator needs to hold the meter pen and pass the meter pen between the two adjacent air switches in the front row. Due to the shielding of the air switches in the front row and the short length of the meter pen, the operator needs to stretch his hand between the two adjacent air switches in the front row to make the probe contact with the air switch in the rear row, which makes it difficult for the probe to contact with the air switch in the rear row. At the same time, the distance between the two adjacent air switches in the front row is small, and when the hand is stretched between the two adjacent air switches in the front row, it is easy to touch the two adjacent air switches, which may cause electric shock accident and poor safety.

[0040] Based on this, the embodiment of the present application provides a meter pen and a multimeter. The meter pen comprises a meter pen body, a probe, a connecting line, at least one supporting piece and at least one fixing piece. The supporting piece connects the meter pen body and the connecting line. The connecting line is connected to the measuring instrument. The fixing piece is arranged at least one of the connection between the supporting piece and the meter pen body and the connection between the supporting piece and the connecting line. When using the meter pen, the operator can hold on the meter pen body or the supporting piece, which is relative to the prior art that only the meter pen body can be held. The length of the holding part is increased, and the length of the supporting piece can be adjusted by adjusting the number of the supporting pieces, so that part of the supporting pieces are located outside the front row of air switches when the probe contacts the rear row of air switches. When measuring the voltage of the rear row of air switches on the DC side of the inverter, the operator can hold on the side of the supporting piece away from the probe, so that the probe is more convenient to contact the rear row of air switches between the two adjacent air switches in the front row, thereby making it more convenient to measure the voltage of the rear row of air switches. At the same time, the operator's hand is not easy to touch the front row of air switches, which improves the safety of using the meter pen.

[0041] The embodiment of the present application is described below with reference to the accompanying drawings.

[0042] Figure 1 is a structure diagram of the meter pen of the measuring instrument provided by the embodiment of the present application; Figure 2 is Figure 1 is a structure diagram of the meter pen of the measuring instrument provided by the embodiment of the present application; Figure 5 is a structure diagram of the meter pen of the measuring instrument provided by the embodiment of the present application.

[0043] Referring to Figure 1 , Figure 2 and Figure 5 , the embodiment of the present application provides a meter pen of a measuring instrument, comprising a meter pen body 100, a probe 200, a connecting line 300, at least one supporting piece 400 and at least one fixing piece 500. One end of the connecting line 300 is used to be connected to the measuring instrument. The other end of the connecting line 300 is connected to the meter pen body 100 through the supporting piece 400. The probe 200 is connected to the meter pen body 100. The probe 200 is used to contact the measured device, so that the measured device, the meter pen and the measuring instrument form a loop. The supporting piece 400 is located on one side of the connecting line 300. The supporting piece 400 connects the meter pen body 100 and the connecting line 300.

[0044] The fixing piece 500 is arranged at least one of the connection between the supporting piece 400 and the meter pen body 100 and the connection between the supporting piece 400 and the connecting line 300, to connect the supporting piece 400 and the meter pen body 100, and / or connect the supporting piece 400 and the connecting line 300.

[0045] It should be noted that the measuring instrument is an instrument with a probe pen. For example, a multimeter, an oscilloscope, a resistance meter, an ammeter, a voltmeter, a frequency meter or a capacitance meter.

[0046] For example, one end of the probe pen body 100 is electrically connected with the probe 200, and the probe pen body 100 is coaxially connected with the probe 200. One end of the connecting line 300 is electrically connected with the other end of the probe pen body 100, and the other end of the connecting line 300 has a mounting portion 310 for electrical connection with the display assembly.

[0047] The support 400 is located on one side of the probe pen body 100 and the connecting line 300, and part of the support 400 is opposite to the probe pen body 100 and connected with the probe pen body 100, and the rest of the support 400 is opposite to the connecting line 300 and connected with the connecting line 300.

[0048] Specifically, when using the probe pen, first place the support 400 on one side of the probe pen body 100 and the connecting line 300, and connect the support 400 with the probe pen body 100 and the connecting line 300 to fix the support 400 on the probe pen body 100 and the connecting line 300. Then connect the end of the connecting line 300 away from the probe pen body 100 with the measuring instrument, the operator can hold the probe pen body 100 and the support 400, and then make the probe 200 contact with the measured device, so that the measured device, the probe pen and the measuring instrument form a loop, and then the parameters of the measured device can be measured.

[0049] It can be understood that the measured parameters can be voltage, current, resistance, frequency, capacitance, etc.

[0050] Specifically, at least one fixing member 500 is arranged at the connection between the support 400 and the probe pen body 100 to make the connection between the support 400 and the probe pen body 100 more stable, and at least one fixing member 500 is arranged at the connection between the support 400 and the connecting line 300 to make the connection between the support 400 and the connecting line 300 more stable.

[0051] In some embodiments, the support 400 is located between the probe pen body 100 and the connecting line 300, and is electrically connected with the probe pen body 100 and the connecting line 300.

[0052] The meter pen provided by the embodiment of the present application comprises a support 400 and a fixing member 500, the support 400 is connected to the meter pen body 100 and a connecting line 300, the connecting line 300 is connected to a measuring instrument, and the fixing member 500 is arranged at at least one of a connection position between the support 400 and the meter pen body 100 and a connection position between the support 400 and the connecting line 300. When the meter pen is used, an operator can hold the meter pen body 100 or the support 400, compared with the prior art in which only the meter pen body 100 can be held, the length of the holding part is increased, and the length of the support 400 can be adjusted by adjusting the number of the support 400, so that part of the support is located outside the front row of air switches when the probe contacts the air switch in the rear row. When the voltage of the air switch in the rear row on the direct current side of the inverter is measured, the operator can hold the side of the support 400 away from the probe 200, so that the probe 200 is more convenient to contact the air switch in the rear row through the two adjacent air switches in the front row, thereby making the measurement of the voltage of the air switch in the rear row more convenient. Meanwhile, the hand of the operator is less likely to touch the air switch in the front row, and the safety of using the meter pen is improved.

[0053] With reference to Figure 5 In some embodiments, the fixing member 500 is a fixing belt.

[0054] The other end of the connecting line 300 is connected to the end of the meter pen body 100 away from the probe 200, the support rod is located on one side of the meter pen body 100, and the support rod is parallel to the meter pen body 100, part of the support rod is opposite to the meter pen body 100, and the rest of the support rod is opposite to the connecting line 300. At least one fixing belt is wound to connect the support rod and the meter pen body 100, and at least one fixing belt is wound to connect the support rod and the connecting line 300. When the meter pen is used, the hand of the operator can hold the support rod, compared with only holding the meter pen body 100, the holding part is increased by part of the support rod opposite to the connecting line 300, and the length of the holding part of the meter pen is increased.

[0055] In this way, the fixing belt is arranged to connect the support rod and the meter pen body 100 and the support rod and the connecting line 300, respectively, and the relative position of the support rod and the meter pen body 100 can be freely adjusted to adjust the length of part of the support rod opposite to the connecting line 300, and the length of the holding part of the meter pen can be adjusted.

[0056] It can be understood that the cross-sectional shape of the support rod can be circular, arc-shaped or polygonal, etc. The length of the support rod can be adaptively set according to actual needs, which is not limited in the embodiment.

[0057] The fixing belt can be a tape, a silicone rubber ring, a cloth belt or a rope, etc.

[0058] In a specific implementation, the fixing member 500 is insulating tape. The insulating tape is wrapped around and connected to the support rod and the test lead body 100, and is adhered to portions of the support rod and the test lead body 100, ensuring a stable and reliable connection between the support rod and the test lead body 100. The insulating tape is wrapped around and adhered to the support rod and the connecting wire 300, and is adhered to portions of the support rod and the connecting wire 300, ensuring a stable and reliable connection between the support rod and the connecting wire 300. The insulating tape also has good insulation performance and is relatively safe.

[0059] Figure 3 This is an exploded schematic diagram of a support member provided in an embodiment of the present application.

[0060] Reference Figure 1 and Figure 3 In some embodiments, the support member 400 includes a first shell 410 and a second shell 420 that are arranged opposite to each other, and the first shell 410 and the second shell 420 are spliced ​​and connected to form a receiving cavity.

[0061] One end of the first shell 410 and one end of the second shell 420 both have a first notch 430, and the other end of the first shell 410 and the other end of the second shell 420 both have a second notch 440. The two first notches 430 are spliced ​​together to form a first plug-in hole, and part of the test pen body 100 is inserted into the accommodating cavity through the first plug-in hole. The two second notches 440 are spliced ​​together to form a second plug-in hole, and the connecting wire 300 is inserted into the accommodating cavity through the second plug-in hole and connected to the test pen body 100.

[0062] The cross-section of the test lead body 100 perpendicular to its axis and the cross-section of the connecting wire 300 are both circular, and the diameter of the cross-section of the test lead body 100 is larger than the diameter of the cross-section of the connecting wire 300 .

[0063] The first plug-in hole mates with part of the test lead body 100, and the second plug-in hole mates with the connecting cable 300. A first notch 430 is located on the end surface of one end of the first and second shells 410, 420, while a second notch 440 is located on the end surface of the other end of the first and second shells 410, 420. Both the first and second notches 430, 440 are arc-shaped grooves. The two first notches 430 combine to form a first circular hole, which is the first plug-in hole, and the two second notches 440 combine to form a second circular hole, which is the second plug-in hole. The inner diameter of the first plug-in hole is larger than the inner diameter of the second plug-in hole.

[0064] Exemplarily, the first shell 410 and the second shell 420 are both arc-shaped.

[0065] It can be understood that the first shell 410 and the second shell 420 are made of hard insulating material. For example, glass, ceramic, plastic or resin, etc. The length of the first shell 410 and the second shell 420 can be adaptively set according to actual needs, which is not limited in the embodiment.

[0066] Further, the first shell 410 and the second shell 420 are provided with anti-skid sleeves, which are bonded on the outer surfaces of the first shell 410 and the second shell 420. When the operator holds the first shell 410 and the second shell 420, the friction between the hands and the first shell 410 and the second shell 420 is large, so that the operator's hands are not easy to slip off the first shell 410 and the second shell 420, thereby facilitating the operator to hold the first shell 410 and the second shell 420.

[0067] In specific implementation, the first shell 410 and the second shell 420 are arranged on both sides of the table pen body 100 respectively, and the first gap 430 is opposite to the table pen body 100 and the second gap 440 is opposite to the connecting line 300. Then the first shell 410 and the second shell 420 are moved towards the table pen body 100 until the two sides of the first shell 410 and the two sides of the second shell 420 abut, and the first gap 430 on the first shell 410 and the first gap 430 on the second shell 420 are combined to form a first insertion hole, part of the table pen body 100 is inserted into the accommodating cavity through the first insertion hole, the second gap 440 on the first shell 410 and the second gap 440 on the second shell 420 are combined to form a second insertion hole, and part of the connecting line 300 is inserted into the accommodating cavity through the second insertion hole. Finally, the two sides of the first shell 410 along the extension direction of the first shell 410 are connected with the two sides of the second shell 420 along the extension direction of the second shell 420.

[0068] Specifically, the first shell 410 and the second shell 420 are detachably connected. For example, the connection mode of the first shell 410 and the second shell 420 can be snap connection or threaded connection, etc.

[0069] Referring to Figure 1 , Figure 2 and Figure 3 In some embodiments, the periphery of the table pen body 100 is provided with at least one annular groove 110, and the first gap 430 abuts the groove bottom of the annular groove 110, so that the first shell 410 and the second shell 420 are clamped on the annular groove 110, and the first gap 430 and the annular groove 110 form a fixing piece 500.

[0070] The first shell 410 and the second shell 420 are unable to move along the watch pen body 100 and the connecting line 300, so that the connection between the first shell 410 and the second shell 420 and the watch pen body 100 is stable and reliable.

[0071] For example, when the first gap 430 abuts against the groove bottom of the annular groove 110, the partial inner surface of the first shell 410 and the partial inner surface of the second shell 420 abut against the watch pen body 100.

[0072] Further, for example, the first shell 410 and the second shell 420 can be a cylinder, a circular truncated cone, or two cylinders with different diameters after being spliced, and the cylinder with a larger diameter is opposite to the watch pen body 100, and the cylinder with a smaller diameter is opposite to the connecting line 300.

[0073] With reference to Figure 2 In a specific implementation, the number of annular grooves 110 is at least two, each annular groove 110 is arranged in a spaced manner along the extension direction of the watch pen body 100, and each annular groove 110 is parallel to each other.

[0074] The first end of the first shell 410 and the first end of the second shell 420 can be clamped with different annular grooves 110, so as to adjust the length of the part opposite to the connecting line 300 of the first shell 410 and the second shell 420, thereby the length of the grippable part can be adjusted.

[0075] In a specific implementation, at least one first clamping part is arranged on each side of the first shell 410 along the extension direction of the first shell 410, and at least one second clamping part is arranged on each side of the second shell 420 along the extension direction of the second shell 420, and the first clamping part and the second clamping part are one-to-one clamped.

[0076] The first shell 410 is connected to the second shell 420 on both sides of the first shell 410 along the extension direction of the first shell 410 and on both sides of the second shell 420 along the extension direction of the second shell 420, so that the connection between the first shell 410 and the second shell 420 is stable and reliable, and the first shell 410 and the second shell 420 are not easy to be separated from the watch pen body 100 and the connecting line 300. At the same time, the buckle connection is simple and convenient, so that the connection between the first shell 410 and the second shell 420 is simple and convenient.

[0077] For example, one of the first clamping part and the second clamping part is a buckle, and the other is a clamping groove matched with the buckle. Further, the buckle and the clamping groove can be arranged on the side surface where the first shell 410 abuts against the second shell 420, or on the side surface where the second shell 420 abuts against the first shell 410.

[0078] In some embodiments, one of the first shell 410 and the second shell 420 has at least two clamping grooves on the outer surface thereof, and the other has at least two clamping plates hinged to the outer surface of the first shell 410 or the second shell 420. The clamping plates have buckles thereon, which rotate the clamping plates relative to the first shell 410 or the second shell 420 when the first shell 410 and the second shell 420 are combined, so that the buckles are clamped with the clamping grooves.

[0079] In some embodiments, the first shell 410 is provided with at least one first plug-in part on each side thereof along the extension direction thereof, and the second shell 420 is provided with at least one second plug-in part on each side thereof along the extension direction thereof, and the first plug-in part is plugged into the second plug-in part one by one, so as to connect the first shell 410 and the second shell 420.

[0080] For example, one of the first plug-in part and the second plug-in part is a plug block, and the other is a plug slot matched with the plug block, and the plug block is plugged into the plug slot one by one. It can be understood that the plug block and the plug slot can be provided on the first shell 410 at the same time, and the plug block and the plug slot can also be provided on the second shell 420 at the same time, the plug block on the first shell 410 is plugged into the plug slot on the second shell 420, and the plug slot on the first shell 410 is plugged into the plug block on the second shell 420.

[0081] Figure 4 FIG. 8 is a structural schematic view of another support provided by an embodiment of the present application.

[0082] Referring to Figure 1 and Figure 4 In some embodiments, one side of the first shell 410 along the extension direction thereof is rotationally connected with one side of the second shell 420 along the extension direction thereof.

[0083] In some embodiments, one side of the first shell 410 along the extension direction thereof is rotationally connected with one side of the second shell 420 along the extension direction thereof. In this way, the relative position of the first shell 410 and the second shell 420 can be determined, and the first shell 410 and the second shell 420 can be combined by rotating one of the first shell 410 and the second shell 420 relative to the other, so that the first shell 410 and the second shell 420 can be combined conveniently.

[0084] For example, the first shell 410 and the second shell 420 are both plastic parts, and one side of the first shell 410 along the extension direction thereof is heat-fused or bonded with one side of the second shell 420 along the extension direction thereof, so that the first shell 410 can rotate relative to the second shell 420.

[0085] Specifically, when installing the support 400, the first shell 410 is sleeved on the watch pen body 100 and the connecting line 300, and the first notch 430 and the second notch 440 on the first shell 410 are respectively abutted with the watch pen body 100 and the connecting line 300, then the second shell 420 is rotated relative to the first shell 410 to cover the first shell 410, and finally the first shell 410 is connected with the second shell 420. It can be understood that the second shell 420 can also be sleeved on the watch pen body 100 and the connecting line 300 first, and then the first shell 410 is rotated relative to the second shell 420 to cover the second shell 420.

[0086] On the basis of the above-mentioned embodiments, the application further provides a multimeter, comprising a multimeter body and at least two watch pens connected with the multimeter body.

[0087] Specifically, the specific structure of the watch pen is described in detail in the above-mentioned embodiments, which will not be repeated here.

[0088] Specifically, the specific structure of the watch pen is described in the above-mentioned embodiments, which will not be repeated here.

[0089] The multimeter body has two installation grooves and a display part, and the installation part 310 of the connecting line 300 of the two watch pens is respectively inserted into the two installation grooves, so that the connecting line 300 is electrically connected with the multimeter body.

[0090] Specifically, when the multimeter is used, the probes 200 of the two watch pens are respectively in contact with the positive and negative electrodes of the measured device, so that the measured device, the two watch pens and the multimeter body form a complete loop, and then the parameters of the measured device can be measured, and the measured parameters of the measured device are displayed through the display part.

[0091] The multimeter provided by the embodiment of the present application is provided with at least one supporting piece 400 and at least one fixing piece 500, the supporting piece 400 is connected with the probe body 100 and the connecting line 300, the connecting line 300 is connected with the measuring instrument, and the fixing piece 500 is arranged at at least one of the connection position of the supporting piece 400 and the probe body 100 and the connection position of the supporting piece 400 and the connecting line 300. When the probe is used, the operator can hold on the probe body 100 or the supporting piece 400, compared with the prior art that the operator can only hold on the probe body 100, the length of the holding part is increased, and the length of the supporting piece 400 can be adjusted by adjusting the number of the supporting pieces 400, so that part of the supporting pieces is located outside the front row of air switches when the probe contacts the air switch in the rear row. When the voltage of the air switch in the rear row on the direct current side of the inverter is measured, the operator can hold on the side of the supporting piece 400 away from the probe 200, so that the probe 200 is more convenient to contact the air switch in the rear row through the two adjacent air switches in the front row, thereby making the measurement of the voltage of the air switch in the rear row more convenient. Meanwhile, the hand of the operator is not easy to touch the air switch in the front row, and the safety of using the probe is improved.

[0092] In some embodiments, the multimeter body is provided with at least two third clamping parts, and the supporting piece 400 of the probe of the measuring instrument is clamped with the third clamping parts.

[0093] Specifically, the third clamping part is arranged to accommodate the supporting piece 400 through the third clamping part. For example, the third clamping part can be a clamping groove matched with the supporting piece 400. It can be understood that the third clamping part can also be a clamping ring.

[0094] In some embodiments, the multimeter further comprises a connecting piece, and the multimeter body is provided with a fixing ring, and the connecting piece connects the fixing ring and the supporting piece 400. For example, the connecting piece is a rope.

[0095] The terms "first", "second", etc. in the specification and claims of the embodiment of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily mean a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the embodiment of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0096] In this application, the terms "set", "connected", "fixed" should be understood broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0097] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope of the application being indicated by the appended claims.

Claims

1. A test lead for a measuring instrument, characterized in that: It includes a test lead body, a probe, a connecting line, at least one supporting member and at least one fixing member; One end of the connecting wire is used to connect to the measuring instrument, the other end of the connecting wire is connected to the test lead body through the supporting member, the probe is connected to the test lead body, and the probe is used to contact the device under test, so that the device under test, the test lead and the measuring instrument form a loop; The fixing member is arranged on at least one of the connection between the support member and the test lead body and the connection between the support member and the connecting line to connect the support member and the test lead body and / or to connect the support member and the connecting line.

2. The test lead of the measuring instrument according to claim 1, characterized in that: The fixing member is a fixing belt.

3. The test lead of the measuring instrument according to claim 1, characterized in that: The fixing piece is an insulating tape.

4. The test lead of the measuring instrument according to claim 1, characterized in that: The support member includes a first shell and a second shell arranged opposite to each other, wherein the first shell and the second shell are spliced ​​and connected to form a receiving cavity; One end of the first shell and one end of the second shell both have a first notch, and the other end of the first shell and the other end of the second shell both have a second notch. The two first notches are spliced ​​together to form a first plug-in hole, and part of the test lead body is inserted into the accommodating cavity through the first plug-in hole. The two second notches are spliced ​​together to form a second plug-in hole, and part of the connecting wire is inserted into the accommodating cavity through the second plug-in hole and connected to the test lead body.

5. The test lead of the measuring instrument according to claim 4, characterized in that: At least one annular groove is provided on the circumference of the test lead body, and the first notch abuts against the bottom of the annular groove so that the first shell and the second shell are clamped on the annular groove. The first notch and the annular groove form the fixing member.

6. The test lead of the measuring instrument according to claim 5, characterized in that: There are at least two annular grooves, and the annular grooves are spaced apart along the extension direction of the test lead body, and the annular grooves are parallel to each other.

7. The test lead of the measuring instrument according to claim 4, characterized in that: The first shell is provided with at least one first clamping portion on both sides along its extension direction, and the second shell is provided with at least one second clamping portion on both sides along its extension direction. The first clamping portion and the second clamping portion are clamped in a one-to-one correspondence.

8. The test lead of the measuring instrument according to claim 4, characterized in that: One side of the first shell along the extension direction of the first shell is rotatably connected to one side of the second shell along the extension direction of the second shell.

9. A multimeter, characterized in that: The utility model comprises a multimeter body and at least two test leads of the measuring instrument according to any one of claims 1 to 8 connected to the multimeter body.

10. The multimeter according to claim 9, wherein: At least two third clamping parts are provided on the multimeter body, and the support members of the test leads of the measuring instrument are clamped with the third clamping parts.

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