JP2021002821A - Measuring instrument - Google Patents

Abstract

To provide a measuring instrument that can execute various data communication processes by wireless communication and has a sufficiently low manufacturing cost.SOLUTION: A measuring unit that executes a measurement process is housed in a casing 10, and a component mounting unit is provided that configured to be able to execute a data communication process with an external device, and provided in the casing 10 and on which a measuring instrument component can be mounted, and the casing 10 includes a main body 11 provided with an opening 11a that enables attachment/detachment of measuring instrument components to the component mounting unit, and a lid 12 capable of closing the opening 11a, and the component mounting unit includes an adapter mounting unit 25 to which a wireless communication adapter 50 as the measuring instrument component can be attached and detached, and the opening 11a is provided in the main body 11 such that the wireless communication adapter 50 can be attached and detached to and from an adapter mounting unit 25 with the lid 12 removed, and is configured to be able to execute the data communication process with the external device via the wireless communication adapter 50 mounted in the adapter mounting unit 25.SELECTED DRAWING: Figure 4

Description

The present invention relates to a measuring instrument configured to be capable of executing a predetermined data communication process with an external device.

As this type of measuring instrument, the applicant has provided a clamp-type resistance measuring device (hereinafter, also referred to as “measuring instrument”) in which a measuring unit capable of performing a measuring process for measuring the ground resistance of the measurement target is housed in a casing. It is disclosed in the following patent documents. In this measuring instrument, a wireless communication unit, a control unit, a memory, and the like are housed in the casing together with the measuring unit, and an operation unit, a display unit, and the like are arranged on the outer surface side of the casing. In this case, the wireless communication unit receives the control data transmitted from the external device and externally displays the measurement result in a state where the wireless communication with the external device (smartphone) is permitted. It is configured to be able to send data to the device.

When measuring the ground resistance of the measurement target with this measuring instrument, the measurement start is instructed in a state where the measurement target is clamped by the clamp sensor unit. At this time, the measuring unit executes the measurement process under the control of the control unit and outputs the ground resistance (measured value) of the measurement target. In addition, the control unit generates display data based on the measured value output from the measuring unit and the operating state of the measuring instrument. Further, the control unit displays the measured value and the operating state by outputting the generated display data to the display unit. As a result, it is possible to grasp the ground resistance of the measurement target and the operating state of the measuring instrument by referring to the display unit of the measuring instrument.

On the other hand, when displaying the measurement result or the operating state on the display unit of the external device, the operation unit of the measuring instrument and the operation unit of the external device are controlled to start the operation of each wireless communication unit. At this time, a wireless connection is established and mutual communication is possible. Next, the operation unit of the external device is operated to start the measurement system program. At this time, the measurement processing screen is displayed on the display unit of the external device, and the control data requesting the measuring device to start transmitting the display data is transmitted from the external device. On the other hand, in the measuring instrument, display data is transmitted from the wireless communication unit according to the control data transmitted from the external device. Further, in the external device, the measured value by the measuring instrument and the operating state of the measuring instrument are displayed on the measurement processing screen based on the display data transmitted from the measuring instrument. This makes it possible to grasp the ground resistance of the measurement target and the operating state of the measuring instrument by referring to the display unit of the external device.

Japanese Unexamined Patent Publication No. 2014-11603 (pages 5-13, Fig. 1-6)

However, the measuring instrument disclosed by the applicant in the above patent document has the following problems to be improved. Specifically, the measuring instrument disclosed by the applicant is configured to include a wireless communication unit capable of executing various data communication processes with an external device (smartphone). As a result, in the measuring instrument disclosed by the applicant, for example, by transmitting display data from the measuring instrument to the external device, the measurement result by the measuring instrument and the operating state of the measuring instrument are displayed on the display unit of the external device. It is possible to make it.

On the other hand, some users of this type of measuring instrument do not need the function of data communication processing with an external device. Therefore, in order to provide the measuring instrument to a person who does not need the data communication processing function at a low cost, the applicant does not have the wireless communication unit, and the main components such as the measuring unit and the control unit are described above. A measuring instrument arranged in the same manner as the measuring instrument is manufactured separately. As a result, it is difficult to improve work efficiency due to handling two types of measuring instruments with different wireless communication units at product manufacturing sites and distribution sites, and the product price can be further reduced. It has become difficult. Therefore, it is preferable to improve this point.

Further, in a measuring instrument capable of executing data communication processing by wireless communication such as the measuring instrument disclosed by the applicant, the wireless communication unit (communication module) is generally a measuring unit, a control unit, a memory, or the like. It is housed in the casing in a state of being mounted on the circuit board together with the components (a state in which the measuring instrument cannot be removed). In this case, in order to manufacture and sell a measuring instrument capable of wireless communication, it may be necessary to obtain product certification as a "wireless communication device" according to a predetermined procedure for each country of use. In addition, the product certification procedure for each country needs to be performed individually for each type of communication device (device on which the communication module is mounted), even if the device is equipped with the same communication module. For this reason, the manufacturing cost of the measuring instrument is currently rising by the cost required for product certification as a "wireless communication device", and it is preferable to improve this point.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a measuring instrument capable of executing various data communication processes by wireless communication and having a sufficiently low manufacturing cost.

In order to achieve the above object, the measuring instrument according to claim 1 is configured such that a measuring unit for executing measurement processing is housed in a casing and data communication processing specified in advance with an external device can be executed. The measuring instrument is provided with a component mounting portion provided in the casing so that the measuring instrument component can be mounted, and the casing has an opening that allows the measuring instrument component to be attached to and detached from the component mounting portion. The main body portion provided with the above and a lid body capable of closing the opening are provided, and the component mounting portion includes a first mounting portion to which a wireless communication unit as a component of the measuring instrument can be attached and detached. The portion is provided on the main body portion so that the wireless communication unit can be attached to and detached from the first mounting portion with the lid removed, and the external portion is provided via the wireless communication unit mounted on the first mounting portion. It is configured to be able to execute the predetermined data communication process with the device.

The measuring instrument according to claim 2 is the measuring instrument according to claim 1, wherein the component mounting portion includes a second mounting portion on which the measuring instrument component other than the wireless communication unit can be mounted, and the opening is. With the lid removed, the wireless communication unit can be attached to and detached from the first mounting portion, and the measuring instrument components other than the wireless communication unit can be attached to and detached from the second mounting portion. ing.

The measuring instrument according to claim 3 is the measuring instrument according to claim 1 or 2, wherein the main body is attached to the main body and the lid is detached from the main body in a state where the opening is closed. It is configured so that the detachment regulation screw that regulates can be tightened.

The measuring device according to claim 4 is the measuring device according to any one of claims 1 to 3, wherein the lid body is mounted on the first mounting portion in a state where the opening is closed. A contact portion that comes into contact with the wireless communication unit and can regulate the detachment of the wireless communication unit from the first mounting portion is provided.

The measuring device according to claim 5 is the measuring device according to any one of claims 1 to 4, wherein the lid body is attached to the first mounting portion with the wireless communication unit in a state where the opening is closed. It is configured so that the presence or absence can be visually confirmed.

The measuring device according to claim 6 is the measuring device according to any one of claims 1 to 5, wherein the lid body visually transmits the wireless communication unit mounted on the first mounting portion. When the lid is attached to the main body portion in a state where the first see-through portion formed of the first material to be provided and the wireless communication portion is not attached, the first attachment through the first perspective portion. When the lid is attached to the main body in a state where the wireless communication unit is attached while being positioned at the first regulation position that regulates the visual inspection of the unit, the wireless communication through the first transparent unit is performed. It is provided with a first shielding portion that is positioned at a first permissible position that allows visual inspection of the portion.

The measuring instrument according to claim 7 is the measuring instrument according to any one of claims 1 to 6, wherein the lid body is attached to the main body portion in a state where the wireless communication unit is not attached. The lid is provided with a first member that is positioned at the first non-mounted position and is positioned at the first mounted position when the lid is mounted on the main body in the state where the wireless communication unit is mounted. It is possible to determine whether or not the wireless communication unit is mounted on the first mounting portion based on whether the first member is located at the first non-mounting position or the first mounting position. ing.

The measuring device according to claim 8 is the measuring device according to any one of claims 1 to 3, wherein the lid and the wireless communication unit are integrally formed, and the opening is closed by the lid. The wireless communication unit can be attached to the first attachment unit.

The measuring instrument according to claim 9 is the measuring instrument according to any one of claims 1 to 8, wherein the main body portion is the radio with respect to the first mounting portion in a state where the opening is closed by the lid body. It is configured so that the presence or absence of the communication unit can be visually recognized.

The measuring instrument according to claim 10 is the measuring instrument according to any one of claims 1 to 9, wherein the main body portion visually transmits the wireless communication portion mounted on the first mounting portion. Positioned at a second regulated position that regulates the visual inspection of the second fluoroscopic unit formed of the second material having the second material and the first fluoroscopic portion through the second fluoroscopic unit when the wireless communication unit is not mounted. It is provided with a second shielding unit that is positioned at a second permissible position that allows the wireless communication unit to be visually recognized through the second fluoroscopic unit when the wireless communication unit is mounted.

The measuring instrument according to claim 11 is the measuring instrument according to any one of claims 1 to 10, wherein the main body unit is positioned at the second non-attached position when the wireless communication unit is not attached. A second member is provided that is positioned at the second mounting position when the wireless communication unit is mounted, and whether the second member is located at the second non-mounting position or the second mounting position. Based on the above, it is possible to determine whether or not the wireless communication unit is mounted on the first mounting unit.

The measuring instrument according to claim 12 is the measuring instrument according to any one of claims 1 to 11, further comprising a detecting unit for detecting whether or not the opening is blocked by the lid, and the detecting unit comprises a detecting unit. It is configured so that the execution of the measurement process by the measuring unit is restricted in the state where it is detected that the opening is not closed.

The measuring instrument according to claim 13 is the measuring instrument according to any one of claims 1 to 12, wherein the main body and the lid are made of an insulating resin material.

The measuring instrument according to claim 14 is the measuring instrument according to any one of claims 1 to 13, wherein the first mounting portion includes an electrode for supplying power to the wireless communication unit.

The measuring instrument according to claim 15 is the measuring instrument according to any one of claims 1 to 14, wherein a portion having a high voltage during the measurement process is present in the main body portion.

The measuring instrument according to claim 16 is the measuring instrument according to claim 15, wherein the measuring unit performs at least one of a current measurement process, a voltage measurement process, an insulation resistance measurement process, and a ground resistance measurement process. It is configured to be executable as.

The measuring instrument according to claim 1 includes a first mounting portion to which a wireless communication unit as a measuring device component can be attached and detached, and the component mounting portion is configured, and the first mounting portion is provided with the lid removed. An opening is provided in the main body so that the wireless communication unit can be attached and detached, and a predetermined data communication process can be executed with an external device via the wireless communication unit attached to the first attachment unit. There is.

Therefore, according to the measuring instrument according to claim 1, it is only necessary to manufacture one type of measuring instrument provided with the first mounting portion without manufacturing two types of measuring instruments having different presence / absence of the wireless communication unit. The wireless communication unit can be attached / not attached to the first attachment unit depending on the necessity of data communication processing. As a result, it is possible to sufficiently reduce the manufacturing cost of the measuring instrument capable of executing various data communication processes by wireless communication. In addition, by installing a wireless communication unit that has been certified as a wireless communication device for each country of use so that data communication processing can be executed, each wireless communication unit is installed. For all measuring instruments, product certification for each country of use is not required, so the manufacturing cost of each measuring instrument can be further reduced. Further, unlike the configuration in which the wireless communication unit can be attached and detached from the outside of the casing, the wireless communication unit can be attached and detached from the opening closed by the lid by arranging the first mounting portion inside the casing. By keeping the opening closed by the lid when using the measuring instrument, it is possible to reliably avoid an accident in which the conductor portion of the first mounting portion is touched, and the first mounting portion or the like becomes dirty. The situation of adhesion can also be preferably avoided.

According to the measuring instrument according to claim 2, the component mounting portion is provided with a second mounting portion on which measuring instrument components other than the wireless communication unit can be mounted, and the first mounting portion is provided with the lid removed. By providing an opening in the main body, it is possible to attach / detach the wireless communication unit to and from the second mounting part, and to attach / detach the measuring instrument components other than the wireless communication unit to the second mounting part. Compared with the configuration in which the opening and the lid are provided, the number of structures such as wall-shaped portions required to ensure good insulation is reduced, so that the degree of freedom in design can be sufficiently improved.

According to the measuring instrument according to claim 3, the main body is configured so that the detachment regulating screw that regulates the detachment of the lid from the main body when the opening is closed can be tightened, so that the lid can be separated from the main body. It is possible to reliably avoid a situation in which the opening is unintentionally opened due to the removal of the lid.

According to the measuring instrument according to claim 4, in a state where the opening is closed, it is possible to prevent the wireless communication unit from coming into contact with the wireless communication unit mounted on the first mounting portion. By providing the contact portion on the lid, it is possible to reliably prevent the wireless communication unit from being detached from the first mounting portion in the casing and becoming incapable of performing data communication processing.

In the measuring instrument according to claim 5, the lid is configured so that the presence or absence of the wireless communication unit attached to the first attachment portion can be visually observed in a state where the opening is closed. Further, in the measuring instrument according to claim 6, the lid communicates wirelessly with the first fluoroscopic unit formed of a first material having light transmission so that the wireless communication unit mounted on the first mounting unit can be visually transmitted. When the lid is attached to the main body in the non-attached state, it is positioned at the first regulation position that regulates the visual inspection of the first attachment portion through the first perspective portion, and the wireless communication unit is attached. It is configured to include a first shielding portion that is positioned at a first permissible position that allows the wireless communication unit to be seen through the first fluoroscopic unit when the lid is attached to the main body portion in the state of being in the state. .. Further, in the measuring instrument according to claim 7, when the lid is attached to the main body in the state where the wireless communication unit is not attached, the lid is positioned at the first non-attached position and the wireless communication unit is attached. A first member is provided which is positioned at the first mounting position when the lid is mounted on the main body in the mounted state, and the first member is located at either the first non-mounting position or the first mounting position. It is configured so that it can be determined whether or not the wireless communication unit is attached to the first attachment unit based on whether or not the wireless communication unit is attached.

Therefore, according to the measuring instruments according to claims 5 to 7, wireless communication is performed with the first mounting unit without turning on the power to electrically detect the wireless communication unit or removing the lid from the main body unit. It is possible to visually and easily confirm whether or not the portion is attached.

According to the measuring device according to claim 8, the lid and the wireless communication unit are integrally formed, and the opening is closed by the lid so that the wireless communication unit can be attached to the first attachment portion. As a result, the attachment of the wireless communication unit to the first attachment portion and the attachment of the lid body to the main body portion (blocking of the opening by the lid body) can be completed at the same time in one operation.

In the measuring instrument according to claim 9, the main body portion is configured so that whether or not the wireless communication unit is attached to the first attachment portion can be visually observed in a state where the opening is closed by the lid body. Further, in the measuring instrument according to claim 10, the main body portion wirelessly communicates with a second fluoroscopic unit formed of a second material having light transmission so that the wireless communication unit mounted on the first mounting portion can be visually transmitted. When the unit is not attached, it is positioned at the second regulation position that restricts the visual inspection of the first attachment unit through the second perspective unit, and when the wireless communication unit is attached, the second perspective unit is transparent. It is configured to include a second shielding unit that is positioned at a second allowable position that allows visual inspection of all wireless communication units. Further, in the measuring instrument according to claim 11, the main body is positioned at the second non-mounted position when the wireless communication unit is not mounted, and at the second non-mounted position when the wireless communication unit is mounted. Whether or not the wireless communication unit is mounted on the first mounting portion based on whether the second member is positioned at the second non-mounting position or the second mounting position. Is configured to be distinguishable.

Therefore, according to the measuring instruments according to claims 9 to 11, wireless communication is performed with the first mounting unit without turning on the power to electrically detect the wireless communication unit or removing the lid from the main body unit. Whether or not the part is attached (or whether the lid with the wireless communication part integrally formed or the lid without the wireless communication part is attached to the main body) is visually confirmed reliably and easily. can do.

According to the measuring instrument according to claim 12, the first mounting is performed by configuring the measuring device to restrict the execution of the measurement process in the state where the detection unit detects that the opening is not closed. It is possible to reliably avoid an accident in which the measurement process is unintentionally executed while the conductor portion or the like of the portion can be touched.

According to the measuring instrument according to claim 13, the occurrence of an electric shock accident can be more reliably avoided by forming the main body and the lid with an insulating resin material.

According to the measuring instrument according to claim 14, the first mounting portion is provided with electrodes for supplying power to the wireless communication unit, so that the power supply is arranged in the wireless communication unit separately from the power supply of the measuring instrument. Compared with the configuration, the wireless communication unit can be sufficiently miniaturized, whereby the measuring instrument itself in which the wireless communication unit can be mounted can be sufficiently miniaturized.

In the measuring instrument according to claim 15, there is a portion in the main body that becomes a high voltage during the measurement process. Further, in the measuring instrument according to claim 16, the measuring unit is configured so that at least one of a current measuring process, a voltage measuring process, an insulating resistance measuring process and a ground resistance measuring process can be executed as a measuring process. Therefore, according to the measuring instrument according to claim 15 or 16, in the measuring instrument in which the inside of the casing becomes a high voltage during the measuring process, the opening is closed by the lid, so that the measuring instrument becomes a high voltage during the measuring process. Since the situation of touching the part can be preferably avoided, the electric shock accident can be surely avoided.

It is a block diagram which shows the structure of the measurement system 100. It is an external perspective view of a clamp meter 1. It is sectional drawing of the clamp meter 1. It is an exploded perspective view of the clamp meter 1. It is an external perspective view of the clamp meter 1A. It is sectional drawing of the vicinity of the adapter mounting part 25 in the clamp meter 1B. It is sectional drawing of the vicinity of the adapter mounting part 25 in the clamp meter 1C in the state which the lid body 312 is not mounted on the main body part 311. It is sectional drawing of the vicinity of the adapter mounting part 25 in the clamp meter 1C with the lid body 312 mounted on the body part 311. It is sectional drawing of the vicinity of the adapter mounting part 25 in the clamp meter 1D in the state where the wireless communication adapter 50 is not mounted. It is sectional drawing of the vicinity of the adapter mounting part 25 in the clamp meter 1D with the wireless communication adapter 50 mounted. It is sectional drawing of the vicinity of the adapter mounting part 25 in the clamp meter 1E in the state which the lid body 512 is not mounted on the main body part 311. It is sectional drawing of the vicinity of the adapter mounting part 25 in the clamp meter 1E in the state which the lid body 512 is mounted on the main body part 311. It is sectional drawing of the vicinity of the adapter mounting part 25 in the clamp meter 1F in the state where the wireless communication adapter 50 is not mounted. It is sectional drawing of the vicinity of the adapter mounting part 25 in the clamp meter 1F with the wireless communication adapter 50 mounted.

Hereinafter, embodiments of the measuring instrument according to the present invention will be described with reference to the accompanying drawings.

The measurement system 100 shown in FIG. 1 is an example of a "measurement system" capable of performing various measurement operations using the clamp meter 1, and includes a clamp meter 1, a personal digital assistant 2, and a server 3. The measurement process using the above, the display of the measurement result by the measurement process on the personal digital assistant 2, and the storage by the server 3 can be executed. In the actual measurement system 100, a plurality of clamp meters 1 and a plurality of other "measuring instruments" including the clamp meter 1 may be used, or an "external device" other than the personal digital assistant 2 may be used. However, in order to facilitate understanding of the configuration and usage of the clamp meter 1, an example in which one clamp meter 1 and one mobile information terminal 2 are provided will be described.

The clamp meter 1 is an example of a "measuring instrument", and as will be described later, a "current measurement process" for measuring the current value of a current flowing through a measurement target and a voltage value of a voltage applied to the measurement target are measured. It is configured to be able to execute "measurement processing" such as "voltage measurement processing" for measurement and "predetermined data communication processing" with an "external device" such as a mobile information terminal 2. Specifically, as shown in FIG. 1, the clamp meter 1 has a casing 10 of a circuit board 20 in which a battery mounting unit 21, a measuring unit 22, a processing unit 23, a storage unit 24, an adapter mounting unit 25, and the like are arranged. The operation unit 31 and the display unit 32 connected to the circuit board 20 are arranged on the outer surface side of the casing 10 while being housed in (see FIGS. 2 to 4). Further, in the clamp meter 1, the battery 40 (an example of "measuring instrument components other than the wireless communication unit") is detachably attached to the battery mounting unit 21, and the wireless communication adapter 50 ("measuring instrument configuration"). An example of a "wireless communication unit as a component") is detachably attached to the adapter attachment unit 25.

The casing 10 is an example of the “casing”, and as shown in FIGS. 2 to 4, the main body portion 11 which is an example of the “main body portion”, the lid body 12 which is an example of the “lid body”, and the “removal restriction”. It is provided with a screw 13 which is an example of a “screw”. In FIG. 4, two lids 12 are shown to show the outer surface side and the inner surface side of the lid 12, but in reality, the casing 10 is configured with one lid 12. ..

In this case, during the "measurement process" such as the above "current measurement process" and "voltage measurement process", "insulation resistance measurement process" and "ground resistance measurement process", the "measurement unit (in the clamp meter 1 of this example)" The conductor portion in the measurement circuit constituting the "measurement unit 22)" has a high voltage (100 V or more as an example) (an example of a configuration in which a portion having a high voltage during the measurement process exists in the main body). .. Therefore, in the clamp meter 1 of this example, the main body 11 and the lid 12 are made of an insulating resin material, and all the portions that become high voltage during the “measurement process” are housed in the casing 10. Further, as shown in FIGS. 3 and 4, on the back side of the main body 11 (the back side of the surface on which the operation unit 31 and the display 32 are arranged), the lid 12 is removed from the main body 11. An opening 11a (an example of an "opening") is provided in which the battery 40 can be attached to and detached from the battery mounting portion 21 and the wireless communication adapter 50 can be attached to and detached from the adapter mounting portion 25.

The battery mounting portion 21 is an example of a “second mounting portion” as a “component mounting portion”, and is configured so that a battery 40 (primary battery or secondary battery) can be mounted. In this case, the battery mounting portion 21 is provided with an electrode 21t connected to the electrode 41t of the battery 40, and the electrode 21t is connected to the circuit board 20 in the casing 10. The measuring unit 22 is an example of the “measuring unit” and includes a clamp sensor unit 22a arranged on the tip end side of the casing 10 so as to be openable and closable by operating the knob 30 (see FIGS. 2 to 4). With the measurement target clamped by the unit 22a, the current value of the current flowing through the measurement target and the voltage value of the voltage applied to the measurement target are measured to generate the measurement value D0, and the generated measurement value D0 is processed. It is configured so that it can be output to the unit 23.

The processing unit 23 comprehensively controls the clamp meter 1. Specifically, the processing unit 23 controls the measuring unit 22 to execute the measurement process. Further, the processing unit 23 generates the measurement result data D1 based on the measured value D0 output from the measuring unit 22, and causes the display unit 32 to display the value of the measurement result data D1. Further, as will be described later, the processing unit 23 receives the wireless communication adapter 50 when the wireless communication adapter 50 is attached to the adapter mounting unit 25 so that wireless communication with the mobile information terminal 2 is possible. A data communication process (an example of "data communication process") for transmitting the measurement result data D1 to the mobile information terminal 2 is executed. The storage unit 24 stores the operation program of the processing unit 23, the calculation result of the processing unit 23, and the like.

The adapter mounting portion 25 is an example of the “first mounting portion” as the “component mounting portion”, and is configured so that the wireless communication adapter 50 can be mounted. In this case, the adapter mounting portion 25 includes electrodes 25t for supplying power to the wireless communication adapter 50, signal terminals 25s connected to the signal terminals 51s of the wireless communication adapter 50, and the electrodes 25t and signal terminals 25s. It is connected to the circuit board 20.

The operation unit 31 includes a plurality of operation switches for instructing the setting of the operating conditions of the clamp meter 1 and the start / stop of the measurement process by the measurement unit 22, and outputs an operation signal corresponding to the switch operation to the processing unit 23. .. The display unit 32 displays the value of the measurement result data D1 and the operating state of the clamp meter 1 under the control of the processing unit 23.

In this case, the clamp meter 1 of this example adopts a configuration in which the opening 11a is closed by one lid 12. As a result, in the clamp meter 1 of this example, the opening 11a can be opened by simply removing one lid 12 from the main body 11. Further, in the clamp meter 1 of this example, in a state where the lid 12 is removed from the main body 11 and the opening 11a is opened, the battery 40 is attached to and detached from the battery mounting portion 21, and the wireless communication adapter 50 is attached to the adapter mounting portion 25. It is configured so that it can be attached and detached.

Further, in the clamp meter 1 of this example, as shown in FIGS. 3 and 4, contact portions 12a and 12b are provided on the inner surface side of the lid body 12. In this case, the contact portion 12a is brought into contact with the battery 40 when the opening 11a is closed (when the lid 12 is attached to the main body 11) with the battery 40 mounted on the battery mounting portion 21. The movement of the battery 40 in the casing 10 is restricted. Further, the contact portion 12b is an example of the "contact portion", and when the opening 11a is closed with the wireless communication adapter 50 mounted on the adapter mounting portion 25 (the lid body 12 is attached to the main body portion 11). When attached), the wireless communication adapter 50 is brought into contact with the wireless communication adapter 50 to regulate the movement of the wireless communication adapter 50 within the casing 10 (disengagement of the wireless communication adapter 50 from the adapter mounting portion 25).

Further, in the clamp meter 1 of this example, as shown in FIG. 4, whether or not the opening 11a of the main body 11 is closed by the lid 12 (whether or not the lid 12 is attached to the main body 11). ) Is disposed behind the insertion hole 11b in the main body 11 (an example of the "detection unit": see FIG. 1), and a push for operating the push switch 26 described above. The pin 12c is erected on the inner surface side of the lid body 12. As a result, in the clamp meter 1 of this example, the push switch 26 is provided by the push pin 12c inserted into the insertion hole 11b in a state where the lid 12 is attached to the main body 11 and the opening 11a is closed by the lid 12. Is operated, and it is detected that the opening 11a is closed by the lid 12.

Further, in the clamp meter 1 of this example, in a state where it is detected that the opening 11a is not blocked by the lid body 12, the transition of the clamp meter 1 to the on state is restricted and the off state is maintained. The configuration is adopted. As a result, in the clamp meter 1 of this example, the execution of the "measurement process" by the measuring unit 22 is restricted in the state where the opening 11a is opened. Further, in the clamp meter 1 of this example, the opening is opened by screwing the screw 13 into which the insertion hole 12d of the lid 12 is inserted into the female screw 11c of the main body 11 with the lid 12 attached to the main body 11. A configuration is adopted in which the lid 12 that closes the 11a is restricted from being separated from the main body 11.

Further, the wireless communication adapter 50 is, for example, a "wireless communication device" equipped with a communication module capable of short-range wireless communication conforming to the Bluetooth (registered trademark) standard, and is an adapter mounting portion 25 of the clamp meter 1. It is configured to be connected to the circuit board 20 and to be able to send and receive various data to and from an "external device" such as a personal digital assistant 2 under the control of the processing unit 23.

In this case, the wireless communication adapter 50 also refers to another "measuring instrument" (not shown) provided with the same "adapter mounting portion (first mounting portion)" as the adapter mounting portion 25 in the clamp meter 1. It is configured to be wearable, and it is possible to function as a "wireless communication unit" in the mounted "measuring instrument" and execute "data communication treatment" with an "external device". In addition, the applicant has obtained product certification as a "wireless communication device" for each country in which the wireless communication adapter 50 is used alone. Further, various "measuring instruments" to which the wireless communication adapter 50 is mounted ("measuring instruments" to which the adapter mounting portion 25 is arranged) require product certification as a "wireless communication device". The module is not implemented. Therefore, for each "measuring instrument" configured so that the wireless communication adapter 50 can be attached, regardless of whether or not the wireless communication adapter 50 is attached, all of them are regarded as "wireless communication devices" for each country in which they are used. Product certification is no longer required.

On the other hand, the mobile information terminal 2 is composed of a smartphone or a tablet terminal in which an application for the measurement system 100 is installed, as an example. Like the wireless communication adapter 50, the personal digital assistant 2 includes a wireless communication unit capable of short-range wireless communication conforming to the Bluetooth (registered trademark) standard, and wireless communication with the wireless communication adapter 50 is permitted. In the state, it is possible to execute the data reception process of the data transmitted from the "measuring instrument" such as the clamp meter 1 equipped with the wireless communication adapter 50 and the data transmission process to the "measuring instrument" equipped with the wireless communication adapter 50. It is configured to be possible.

Further, as shown in FIG. 1, the mobile information terminal 2 is configured to be connectable to the mobile communication network Na of the sim authentication method as an example. In this case, the mobile communication network Na is connected to the Internet Nb to which the server 3 and the like are connected. As a result, in the measurement system 100 of this example, mutual communication between the mobile information terminal 2 and the server 3 is possible via the mobile communication network Na and the Internet Nb.

Further, the server 3 is a data server capable of storing the measurement result data D1 generated by the clamp meter 1 and transmitted from the clamp meter 1 to the mobile information terminal 2, and as an example, a "measuring instrument" such as the clamp meter 1. Is operated in a form that allows the manufacturer of the "measuring instrument" to be used by the user of the "measuring instrument".

Next, an example of how to use the measurement system 100 will be described.

When using the measurement system 100, first, install a dedicated application on the mobile information terminal 2, permit the mobile information terminal 2 (dedicated application) to connect to the server 3, and attach the wireless communication adapter 50 to the clamp meter 1. And allow wireless communication between the wireless communication adapter 50 and the mobile information terminal 2. Since the installation of the dedicated application on the mobile information terminal 2 is performed in the same procedure as when the general application is installed on the smartphone or tablet terminal, detailed description thereof will be omitted. Further, since the connection permission to the server 3 by the mobile information terminal 2 is performed in the same procedure as when the connection permission to the cloud server or the like by the smartphone or tablet terminal is performed, detailed description thereof will be omitted.

On the other hand, regarding the tolerance of wireless communication between the wireless communication adapter 50 and the personal digital assistant 2, prior to the use of the clamp meter 1 of this example, the wireless communication adapter 50 is attached to another "measuring instrument" ( When power is supplied to the wireless communication adapter 50 from the "adapter mounting part" of the "measuring instrument"), when wireless communication with the mobile information terminal 2 used this time is already permitted, it is necessary to perform it again. However, hereinafter, it will be described as assuming that wireless communication between the wireless communication adapter 50 attached to the clamp meter 1 and the personal digital assistant 2 is not permitted.

First, the wireless communication adapter 50 is attached to the clamp meter 1. At this time, after loosening the screw 13 screwed into the female screw 11c of the main body 11, the lid 12 is removed from the main body 11. As a result, as shown in FIG. 4, the opening 11a closed by the lid 12 is opened. Next, the wireless communication adapter 50 is mounted on the adapter mounting portion 25. At this time, the electrode 51t of the wireless communication adapter 50 comes into contact with the electrode 25t of the adapter mounting portion 25, and power is supplied from the circuit board 20 to the wireless communication adapter 50, and the signal terminal 51s of the wireless communication adapter 50 Is in contact with the signal terminal 25s of the adapter mounting portion 25, and the communication circuit of the wireless communication adapter 50 is connected to the circuit board 20.

In this case, as described above, the clamp meter 1 of this example detects whether or not the opening 11a is blocked by the lid 12 (whether or not the lid 12 is attached to the main body 11). When it is detected that the opening 11a is not closed, a configuration is adopted in which the off state is maintained even if the battery 40 is mounted on the battery mounting portion 21. Therefore, for example, when the wireless communication adapter 50 is mounted on the adapter mounting portion 25 as described above in a state where the battery 40 is mounted on the battery mounting portion 21, for example, the operation switch for instructing the start of the “measurement process” is erroneously used. Even if the operation is performed, the execution of the "measurement process" by the measurement unit 22 is restricted.

Subsequently, when the battery 40 is not mounted on the battery mounting portion 21, the battery 40 is mounted on the battery mounting portion 21. At this time, in the clamp meter 1 of this example, it is detected that the opening 11a is not blocked by the lid 12 as described above, and the off state is maintained. Therefore, the battery 40 is attached to the battery mounting portion 21. It is possible to avoid a situation in which the “measurement process” by the measuring unit 22 is unintentionally started when the battery is mounted.

Next, the lid 12 is attached to the main body 11 to close the opening 11a. At this time, as a result of the push pin 12c of the lid 12 being inserted into the insertion hole 11b of the main body 11 and the push switch 26 being operated, it is detected that the opening 11a is blocked by the lid 12. As a result, the maintenance of the off state is released, and it is possible to shift to the on state by the operation of the operation unit 31. After that, by screwing the screw 13 through which the insertion hole 12d of the lid body 12 is inserted into the female screw 11c of the main body portion 11, the detachment of the lid body 12 from the main body portion 11 is restricted, and the height is increased during the “measurement process”. The user's hand does not come into direct contact with the voltage-appearing part.

In this case, as shown in FIG. 3, in the clamp meter 1 of this example, the contact portion 12a of the lid 12 comes into contact with the battery 40 mounted on the battery mounting portion 21, and the battery 40 in the casing 10 Movement (disengagement from the battery mounting portion 21) is restricted. Further, the contact portion 12b of the lid 12 comes into contact with the wireless communication adapter 50 mounted on the adapter mounting portion 25, and the movement of the wireless communication adapter 50 within the casing 10 (disengagement from the adapter mounting portion 25) is restricted. Will be done. As described above, the attachment of the battery 40 and the wireless communication adapter 50 to the clamp meter 1 is completed.

Subsequently, the operation unit 31 is operated to shift the clamp meter 1 to the on state, and wireless communication between the wireless communication adapter 50 and the mobile information terminal 2 is allowed. Since the method itself for allowing wireless communication is known, the description of the specific procedure will be omitted. With the above, the measurement system 100 is ready to be used.

On the other hand, during the measurement work, the clamp meter 1 and the mobile information terminal 2 are carried to the measurement site (where the measurement target exists), and the clamp meter 1 and the mobile information terminal 2 are moved to the on state. Next, the state shifts to a state in which wireless communication between the wireless communication adapter 50 mounted on the clamp meter 1 and the mobile information terminal 2 is possible, and the application for the measurement system 100 is started on the mobile information terminal 2. Subsequently, the measurement target is clamped by the clamp sensor unit 22a of the clamp meter 1, and the operation unit 31 is operated to start the measurement process (for example, “current measurement process”).

At this time, the measuring unit 22 measures the current value of the current flowing through the measurement target and outputs the measured value D0 under the control of the processing unit 23. Further, the processing unit 23 generates measurement result data D1 based on the measurement value D0 output from the measurement unit 22 and stores it in the storage unit 24, and stores the value of the measurement value D0 (contents of the measurement result data D1). It is displayed on the display unit 32. As a result, when the measurement target is clamped by the clamp sensor unit 22a while the display unit 32 is visible, the current value of the current flowing through the measurement target is determined based on the measurement result displayed on the display unit 32. Can be grasped.

Further, the processing unit 23 executes a process (data communication process) of reading the measurement result data D1 from the storage unit 24 and transmitting it to the mobile information terminal 2 via the wireless communication adapter 50 in parallel with the above process. In response to this, the mobile information terminal 2 stores the measurement result data D1 transmitted from the clamp meter 1 in the storage unit, and displays the contents of the stored measurement result data D1 on the display unit. As a result, even when the measurement target is clamped by the clamp sensor unit 22a in a state where it is difficult to visually recognize the display unit 32, the measurement target flows based on the measurement result displayed on the mobile information terminal 2. It is possible to grasp the current value of the current current.

In the clamp meter 1 of this example, the measurement unit 22 measures the current value until the operation of instructing the end of the measurement process or the operation of instructing the holding of the measured value (measurement result) at that time is performed. The process of outputting the measured value D0, generating the measurement result data D1 by the processing unit 23, and displaying the measurement result data D1 on the display unit 32 is repeatedly executed. Therefore, the latest measurement results are sequentially displayed on the processing unit 23 of the clamp meter 1 and the display unit of the mobile information terminal 2 at a predetermined cycle, and the measurement result data D1 transmitted from the clamp meter 1 to the mobile information terminal 2 is displayed. It is stored in the storage unit of the mobile information terminal 2. With the above, the measurement of the current value is completed.

Further, in the measurement system 100 of this example, when the above series of measurement operations at the measurement site are completed, the measurement result data D1 stored in the mobile information terminal 2 is transmitted from the mobile information terminal 2 to the server 3. Can be saved. Specifically, as an example, the mobile information terminal 2 is connected to the server 3 via the mobile communication network Na and the Internet Nb. Next, the measurement result data D1 to be transmitted to the server 3 by operating the operation unit of the mobile information terminal 2 is designated. At this time, the processing unit of the mobile information terminal 2 transmits the designated measurement result data D1 to the server 3. Further, the server 3 causes the recording device to record the measurement result data D1 transmitted from the mobile information terminal 2. As a result, by acquiring the measurement result data D1 from the server 3 by various information processing terminals that can be connected to the server 3, the result of the measurement process by the clamp meter 1 can be arbitrarily used in the information processing terminal. ..

On the other hand, as described above, the wireless communication adapter 50 mounted and used on the clamp meter 1 in the above series of operations is the same "adapter mounting portion (first mounting portion)" as the adapter mounting portion 25 in the clamp meter 1. It is possible to use it by attaching it to another "measuring instrument" (not shown) provided with. Therefore, a person who owns a plurality of clamp meters 1 or other "measuring instruments" to which the wireless communication adapter 50 can be attached other than the clamp meters 1 can perform wireless communication for the number of all "measuring instruments" owned. Even if you do not prepare the adapter 50, you can prepare the wireless communication adapter 50 for the number of "measuring instruments" to be used at the same time, and attach the wireless communication adapter 50 to the required "measuring instrument" to perform "data communication processing". It is possible to execute.

The procedure for removing the wireless communication adapter 50 from the "measuring instrument" that does not require "data communication processing" is simply the reverse procedure of attaching the wireless communication adapter 50 to the clamp meter 1. Detailed description will be omitted. Further, the attachment of the removed wireless communication adapter 50 to another "measuring instrument" is the same as the procedure for attaching the wireless communication adapter 50 to the clamp meter 1, and therefore detailed description thereof will be omitted.

Further, in the clamp meter 1 of this example, as described above, the opening 11a can be closed by one lid 12, and the opening 11a can be opened only by removing the lid 12 from the main body 11. At the same time, the battery 40 can be attached to and detached from the battery mounting portion 21 and the wireless communication adapter 50 can be attached to and detached from the adapter mounting portion 25 while the opening 11a is open. In this case, in this type of "measuring instrument", it is necessary to avoid the occurrence of an electric shock accident when the electronic component or the conductor portion in the casing 10 has a high potential during the "measurement process". Therefore, in the clamp meter 1 of this example, the main body 11 and the lid 12 of the casing 10 are formed of an insulating resin material, and the joint between the main body 11 and the lid 12 and the components of the casing 10 are joined. By providing the wall-shaped portion in the portion, the creepage distance inside and outside the casing 10 is sufficiently lengthened.

Therefore, instead of the configuration of the clamp meter 1 that closes the opening 11a by one lid 12, the "lid" that closes the "opening" that allows the battery 40 to be attached to and detached from the battery mounting portion 21 is used. When trying to adopt a configuration in which both "openings" are closed with a "lid" that closes the "opening" that allows the wireless communication adapter 50 to be attached to and detached from the adapter mounting portion 25, both "lids" And, it becomes necessary to provide a wall-shaped portion at the joint portion between the "lid body" and the "main body portion" to which the "lid body" is attached. As a result, the degree of freedom in designing the arrangement of the battery mounting portion 21 and the adapter mounting portion 25 and the mounting position of the electronic component on the circuit board 20 is reduced.

Further, instead of the configuration of the clamp meter 1 in which the adapter mounting portion 25 is provided in the casing 10 closed by the lid 12, the wireless communication adapter 50 can be mounted from the outside of the “casing” on the outer surface side of the “casing”. When the configuration in which the adapter mounting portion 25 is provided is adopted, it becomes difficult to secure sufficient insulation due to the existence of a gap generated between the “casing” and the wireless communication adapter 50. Therefore, as in the clamp meter 1 of this example, the adapter mounting portion 25 is arranged in the casing 10, and the battery 40 is attached / detached to / from the battery mounting portion 21 from the opening 11a closed by one lid 12. It is preferable that the wireless communication adapter 50 can be attached to and detached from the adapter mounting portion 25.

As described above, the clamp meter 1 includes an adapter mounting portion 25 to which the wireless communication adapter 50 corresponding to the "wireless communication unit" as the "measuring instrument component" can be attached and detached, and the "component mounting portion" is configured. At the same time, an opening 11a is provided in the main body 11 so that the wireless communication adapter 50 can be attached to and detached from the adapter mounting portion 25 with the lid body 12 removed, and the wireless communication adapter 50 mounted in the adapter mounting portion 25 is used. It is configured to be able to execute a predetermined "data communication process (in the above example, transmission process of measurement result data D1)" with an external device (portable information terminal 2 in the above example).

Therefore, according to this clamp meter 1, one type of clamp meter 1 provided with an adapter mounting portion 25 is manufactured without manufacturing two types of "measuring instruments" having different "wireless communication units". Only by this, the wireless communication adapter 50 can be used in either the mounting / non-mounting mode with respect to the adapter mounting portion 25 depending on the necessity of "data communication processing". As a result, the manufacturing cost of the clamp meter 1 capable of executing various data communication processes by wireless communication can be sufficiently reduced. In addition, the wireless communication adapter 50 is configured to be able to execute data communication processing by attaching the wireless communication adapter 50 that has been certified as a "wireless communication device" for each country of use. Since product certification for each country of use is not required for each of the "measuring instruments" to be installed, the manufacturing cost of each "measuring instrument" can be further reduced. Further, unlike the configuration in which the wireless communication adapter 50 can be attached and detached from the outside of the "casing", the wireless communication adapter 50 is arranged from the opening 11a in which the adapter mounting portion 25 is arranged in the casing 10 and is closed by the lid 12. By making the clamp meter 1 removable, the opening 11a is closed by the lid 12 when the clamp meter 1 is used, so that an accident of touching the conductor portion of the adapter mounting portion 25 can be reliably avoided. Further, it is possible to preferably avoid a situation in which dirt adheres to the adapter mounting portion 25 and the like.

Further, according to the clamp meter 1, a battery mounting portion 21 to which a battery 40 corresponding to a "measuring instrument component other than the wireless communication unit" can be mounted is provided to form a "component mounting portion", and a lid 12 is provided. The wireless communication adapter 50 can be attached / detached to / from the adapter mounting portion 25 and the battery 40 can be attached / detached to / from the battery mounting portion 21 in the state where the opening 11a is provided in the main body portion 11. Compared to a configuration in which an "opening" and a "lid" are provided for each "measuring instrument component", the number of structures such as wall-shaped parts required to ensure good insulation is reduced. The degree of freedom in design can be sufficiently improved.

Further, according to the clamp meter 1, the main body 11 is configured so that the screw 13 for restricting the detachment of the lid 12 from the main body 11 when the opening 11a is closed can be tightened. It is possible to reliably avoid a situation in which the lid 12 is removed and the opening 11a is unintentionally opened.

Further, according to the clamp meter 1, in a state where the opening 11a is closed, the wireless communication adapter 50 is in contact with the wireless communication adapter 50 mounted on the adapter mounting portion 25 to restrict the detachment of the wireless communication adapter 50 from the adapter mounting portion 25. By providing the possible contact portion 12b on the lid body 12, it is possible to reliably prevent the wireless communication adapter 50 from being detached from the adapter mounting portion 25 in the casing 10 and becoming incapable of performing "data communication processing". be able to.

Further, according to the clamp meter 1, the execution of the measurement process by the measuring unit 22 is restricted in the state where it is detected that the opening 11a is not blocked by the “detecting unit (push switch 26 in this example)”. By making the configuration so as to be performed, it is possible to reliably avoid an accident in which the "measurement process" is unintentionally executed in a state where the conductor portion of the adapter mounting portion 25 can be touched.

Further, according to the clamp meter 1, since the main body 11 and the lid 12 are made of an insulating resin material, the occurrence of an electric shock accident can be more reliably avoided.

Further, according to the clamp meter 1, the adapter mounting portion 25 is provided with the electrode 25t for supplying power to the wireless communication adapter 50, so that the “wireless communication unit” is separated from the power supply of the “measuring instrument”. The wireless communication adapter 50 can be sufficiently miniaturized as compared with the configuration in which the power supply is arranged, whereby the clamp meter 1 itself configured so that the wireless communication adapter 50 can be mounted can be sufficiently miniaturized. it can.

Further, in the clamp meter 1, there is a portion in the main body 11 that becomes a high voltage during the “measurement process”. Further, in the clamp meter 1, the measurement unit 22 is configured so that the "current measurement process" and the "voltage measurement process" can be executed as the "measurement process". Therefore, according to this clamp meter 1, in the clamp meter 1 in which the inside of the casing 10 has a high voltage during the “measurement process”, the opening 11a is closed by the lid 12, so that the voltage is high during the “measurement process”. Since it is possible to preferably avoid the situation where the voltage is touched, it is possible to reliably avoid an electric shock accident.

The configuration of the "measuring instrument" is not limited to the above-mentioned example of the configuration of the clamp meter 1. For example, in the clamp meter 1 described above, whether or not the wireless communication adapter 50 is mounted on the adapter mounting portion 25 in a state where the lid 12 is attached to the main body 11 and the opening 11a is closed by the lid 12. The work of identifying is a little complicated. Specifically, when it is necessary to send and receive various data using the wireless communication adapter 50 to and from the "external device", the wireless communication adapter 50 can be operated by turning on the power and operating the operation unit 31. It is necessary to have the processing unit 23 detect whether or not the lid is mounted and display the detection result on the display unit 32, or to remove the lid 12 from the main body 11 and visually check it.

On the other hand, the clamp meter 1A shown in FIG. 5 is another example of the "measuring instrument", and is a casing 110 ("casing") having a main body 11 and a lid 112 instead of the casing 10 in the clamp meter 1 described above. It is configured with another example). In this clamp meter 1A, the same components as those of the clamp meter 1 are designated by the same reference numerals, and duplicate description will be omitted. The lid 112 is another example of the “lid”, and is configured to be able to close the opening 11a of the main body 11 like the lid 12 of the clamp meter 1. The lid 112 is provided with an opening 113 at a position facing the adapter mounting portion 25 while being attached to the main body 11, and a cover plate 114 made of a light-transmitting resin material is provided as an opening. It is fitted in 113.

Therefore, in this clamp meter 1A, when the wireless communication adapter 50 is mounted on the adapter mounting portion 25 in a state where the opening 11a is closed by the lid 112, the cover plate 114 fitted in the opening 113 The end face 50a of the wireless communication adapter 50 can be visually observed through the cover plate 114, and when the wireless communication adapter 50 is not attached to the adapter mounting portion 25, the wireless communication adapter 50 is not attached through the cover plate 114. The adapter mounting portion 25 can be visually observed.

As described above, according to the clamp meter 1A, the lid 112 is configured so that the presence or absence of the wireless communication adapter 50 attached to the adapter mounting portion 25 can be visually observed when the opening 11a is closed by the lid 112. , Visually check whether the wireless communication adapter 50 is mounted on the adapter mounting portion 25 without turning on the power to electrically detect the wireless communication adapter 50 or removing the lid 112 from the main body 11. Can be confirmed reliably and easily.

In this case, instead of a configuration in which only a part of the "lid body" is formed of a light-transmitting material such as the clamp meter 1A, a configuration in which the entire "lid body" is formed of a light-transmitting material is used. It can also be adopted (not shown). By adopting such a configuration, the wireless communication adapter 50 can be electrically detected by turning on the power in the same manner as the configuration provided with the lid 112, or the "lid" can be removed from the main body 11. It is possible to visually and easily visually confirm whether or not the wireless communication adapter 50 is attached to the adapter attachment portion 25 without removing it, and wirelessly without removing the "lid" from the main body portion 11. It is possible to visually and easily confirm whether or not "measuring instrument components" other than the communication adapter 50 are attached.

Further, the clamp meter 1B shown in FIG. 6 is still another example of the “measuring instrument”, and is a casing having a main body 211 and a “lid” (not shown) instead of the casing 10 and the like in the clamp meter 1 described above. It is configured with 210 (another example of a "casing"). Note that the figure is a schematic view of the clamp meter 1B viewed along the insertion direction of the wireless communication adapter 50 with respect to the adapter mounting portion 25, and details are omitted.

The main body 211 is another example of the “main body”, and the wireless communication adapter 50 and the like can be attached to and detached from the opening 11a to the adapter mounting portion 25 in the same manner as the main body 11 and the like of the clamp meter 1. It is configured as follows. The main body 211 is provided with an opening 213 at a position facing the side surface 50b of the wireless communication adapter 50 mounted on the adapter mounting 25, and is a cover plate made of a light-transmitting resin material. 214 is fitted in the opening 213.

Therefore, in this clamp meter 1B, the wireless communication adapter 50 is attached to the adapter attachment portion 25 in a state where the "lid body" is attached to the main body portion 211 and the opening 11a is closed by the "lid body". Occasionally, the wireless communication adapter 50 can be seen through the cover plate 214 fitted in the opening 213, and when the wireless communication adapter 50 is not mounted on the adapter mounting portion 25, the cover plate 214 is transparent. The adapter mounting portion 25 to which the wireless communication adapter 50 is not mounted can be visually observed.

As described above, according to the clamp meter 1B, the main body portion 211 is configured so that the presence or absence of mounting of the wireless communication adapter 50 on the adapter mounting portion 25 can be visually observed in a state where the opening 11a is closed by the “lid body”. As a result, whether or not the wireless communication adapter 50 is mounted on the adapter mounting portion 25 without turning on the power to electrically detect the wireless communication adapter 50 or removing the "lid" from the main body 211. Can be visually confirmed reliably and easily.

Further, the clamp meter 1C shown in FIGS. 7 and 8 is still another example of the “measuring instrument”, and is a casing 310 having a main body 311 and a lid 312 in place of the casing 10 and the like in the clamp meter 1 described above. (Another example of a "casing"). Note that the figure is a schematic cross-sectional view of the clamp meter 1C cut along the insertion direction of the wireless communication adapter 50 with respect to the adapter mounting portion 25, and details are omitted.

In this case, the lid body 312 is still another example of the “lid body”, and is configured to be able to close the opening 11a of the main body portion 311 like the lid body 12 and the like of the clamp meter 1. The lid 312 is provided with an opening 313 at a position facing the adapter mounting portion 25 while being attached to the main body 311 and is made of a light-transmitting resin material (an example of the "first material"). The formed cover plate 314 is fitted into the opening 313. In this clamp meter 1C, the cover plate 314 fitted in the opening 313 corresponds to the "first perspective portion".

Further, the lid body 312 is a visually restricted position Pa1 that regulates the visual inspection of the adapter mounting portion 25 through the cover plate 314 when the lid body 312 is mounted on the main body portion 311 in the state where the wireless communication adapter 50 is not mounted. When the lid 312 is attached to the main body 311 while being positioned at (an example of the "first regulated position") and the wireless communication adapter 50 is attached, the wireless communication adapter 50 passes through the cover plate 314. The shutter 315 is provided at the visually permissible position Pb1 (an example of the "first permissible position") that allows visual inspection.

This shutter 315 is an example of the "first shielding portion", and the shutter body 315a and the rib 315b are integrated by a resin material having sufficiently low light transmission (a resin material having no substantial light transmission). Is formed in. The shutter body 315a is formed so that the opening 313 in which the cover plate 314 is fitted can be closed inside the casing 310 (inner surface side of the lid 312) so that the shutter body 315a can slide with respect to the body 312 of the lid 312. It is fitted in the guide recess 316. The rib 315b is brought into contact with the wireless communication adapter 50 mounted on the adapter mounting portion 25 to form an oblique portion for sliding the shutter 315 (shutter body 315a) along the guide of the guide recess 316. ..

Further, the main body portion 311 is still another example of the “main body portion”, and the wireless communication adapter 50 or the like is attached to and detached from the opening 11a to the adapter mounting portion 25 in the same manner as the main body portion 11 or the like of the clamp meter 1. It is configured to be able to. The main body 311 is provided so that the rib 315b does not come into contact with the lid 315b even when the shutter 315 of the lid 312 is positioned at either the visually restricted position Pa1 or the visually permissible position Pb1 (relative to the main body of the lid 312). It is formed (so as not to restrict the movement of the shutter 315).

In this clamp meter 1C, the shutter 315 is constantly urged with respect to the main body of the lid 312 in the direction of arrow A1 shown in FIG. 7 by an urging member (not shown). As a result, as shown in the figure, when the lid 312 is removed from the main body 311 the shutter 315 is positioned at the visually restricted position Pa1, and the cover plate 314 and the shutter 315 fitted in the opening 313 are fitted. The shutter main body 315a is overlapped with the shutter main body 315a (the opening 313 is closed by the display plate main body 515a).

Therefore, when the lid 312 is attached to the main body 311 in which the wireless communication adapter 50 is not attached to the adapter attachment portion 25, the rib 315b does not abut on the wireless communication adapter 50 as shown by the broken line in FIG. As a result, the state in which the shutter body 315a (shutter 315) is positioned at the visually restricted position Pa1 is maintained, and the visual inspection of the adapter mounting portion 25 through the cover plate 314 is restricted.

On the other hand, when the lid 312 is attached to the main body 311 to which the wireless communication adapter 50 is attached to the adapter attachment portion 25, the rib 315b hits the wireless communication adapter 50 as shown by the solid line in FIG. In contact with the shutter, the shutter 315 (shutter body 315a) is moved from the visually restricted position Pa1 to the visually permissible position Pb1 in the direction of arrow A2. As a result, the wireless communication adapter 50 mounted on the adapter mounting portion 25 can be visually observed through the cover plate 314 of the end face 50a.

As described above, in the clamp meter 1C, in the clamp meter 1C, the lid body 312 is formed of the "first material" which has light transmission so that the wireless communication adapter 50 mounted on the adapter mounting portion 25 can be visually transmitted. (In this example, the cover plate 314 fitted in the opening 313) ”and the“ first perspective portion ”are transparent when the lid body 312 is attached to the main body portion 311 in the state where the wireless communication adapter 50 is not attached. When the lid body 312 is mounted on the main body 311 in the state where the wireless communication adapter 50 is mounted while being positioned at the visually regulated position Pa1 that regulates the visual inspection of the adapter mounting portion 25, the "first perspective portion" is transparent. The wireless communication adapter 50 is configured to include a shutter 315 located at a visually permissible position Pb1 that allows visual inspection. Therefore, according to this clamp meter 1C, the wireless communication adapter 50 is attached to the adapter mounting portion 25 without turning on the power to electrically detect the wireless communication adapter 50 or removing the lid 312 from the main body 311. It is possible to visually and easily confirm whether or not the is attached.

Further, the clamp meter 1D shown in FIGS. 9 and 10 is still another example of the “measuring instrument”, and instead of the casing 10 and the like in the clamp meter 1 described above, the main body portion 411 and the “lid body” (shown). It is configured with a casing 410 (another example of a "casing") having a casing. Note that the figure is a schematic cross-sectional view of the clamp meter 1D cut along the insertion direction of the wireless communication adapter 50 with respect to the adapter mounting portion 25, and details are omitted.

In this case, the main body 411 is still another example of the "main body", and the wireless communication adapter 50 and the like are attached and detached from the opening 11a to the adapter mounting portion 25 like the main body 11 and the like of the clamp meter 1. It is configured to be able to. The main body 411 is provided with an opening 413 at a position facing the side surface 50b of the wireless communication adapter 50 mounted on the adapter mounting portion 25, and is a resin material having light transmission (an example of "second material"). ) Is fitted into the opening 413. In this clamp meter 1D, the cover plate 414 fitted in the opening 413 corresponds to the "second perspective portion".

Further, the main body 411 has a visually regulated position Pa2 (an example of the "second regulated position": FIG. 9) that regulates the visual inspection of the adapter mounting portion 25 through the cover plate 414 when the wireless communication adapter 50 is not mounted. (See) and when the wireless communication adapter 50 is attached, the visual allowable position Pb2 (an example of the "second allowable position": FIG. 10) allows the wireless communication adapter 50 to be visually recognized through the cover plate 414. It has a shutter 415 located at (see). This shutter 415 is an example of the "second shielding portion", and is formed of a resin material having sufficiently low light transmission (a resin material having no substantial light transmission) and fitted into the guide recess 416. It has been.

In this clamp meter 1D, the shutter 415 is constantly urged with respect to the main body 411 in the direction of the arrow B1 shown in FIG. 9 by an urging member (not shown). As a result, in this clamp meter 1D, as shown in the figure, the shutter 415 is positioned at the visually restricted position Pa2 in the state where the wireless communication adapter 50 is not mounted on the adapter mounting portion 25, and the shutter 415 is positioned at the visually restricted position Pa2 to the opening 413. The fitted cover plate 414 and the shutter 415 are in an overlapping state. Therefore, when the wireless communication adapter 50 is not mounted, the visibility of the adapter mounting portion 25 through the cover plate 414 is restricted.

On the other hand, when the wireless communication adapter 50 is attached to the adapter mounting portion 25, the shutter 415 is moved by the wireless communication adapter 50 in the direction indicated by the arrow B2 shown in FIG. 10 according to the guidance of the guiding recess 416. , As shown in the figure, it is positioned at the visually permissible position Pb2. As a result, it is possible to visually see through the cover plate 414 of the side surface 50b of the wireless communication adapter 50 mounted on the adapter mounting portion 25.

As described above, in the clamp meter 1D, the main body portion 411 is formed of the “second perspective portion” having the light transmissive “second material” so that the wireless communication adapter 50 mounted on the adapter mounting portion 25 can be visually transmitted. (In this example, the cover plate 414 fitted in the opening 413) ”and the visual inspection that regulates the visual inspection of the adapter mounting portion 25 through the“ second perspective portion ”when the wireless communication adapter 50 is not mounted. A shutter 415 that is positioned at the regulated position Pa2 and at a visually permissible position Pb2 that allows the wireless communication adapter 50 to be seen through the "second fluoroscopy unit" when the wireless communication adapter 50 is attached. It is configured to prepare. Therefore, according to this clamp meter 1D, the wireless communication adapter is attached to the adapter mounting portion 25 without turning on the power to electrically detect the wireless communication adapter 50 or removing the "lid" from the main body portion 411. Whether or not the 50 is mounted can be visually confirmed reliably and easily.

Further, the clamp meter 1E shown in FIGS. 11 and 12 is still another example of the “measuring instrument”, and is a casing 510 having a main body portion 311 and a lid 512 instead of the casing 310 in the clamp meter 1C described above. It is configured with another example of a "casing"). Note that the figure is a schematic cross-sectional view of the clamp meter 1E cut along the insertion direction of the wireless communication adapter 50 with respect to the adapter mounting portion 25, and details are omitted. Further, in the clamp meter 1E, the same components as those of the clamp meter 1C are designated by the same reference numerals, and duplicate description will be omitted.

In this case, the lid 512 is still another example of the “lid”, and is configured to be able to close the opening 11a of the main body 311 like the lid 312 of the clamp meter 1C. The lid 512 is provided with an opening 513 at a position not facing the adapter mounting portion 25 when attached to the main body 311 and a cover plate 514 made of a light-transmitting resin material is opened. It is fitted in the portion 513. If there is no problem in terms of insulation and foreign matter intrusion, a configuration in which the cover plate 514 is not fitted into the opening 513 can be adopted (not shown).

Further, the lid 512 is positioned at the non-attached position Pc1 (an example of the "first non-attached position") when the lid 512 is attached to the main body 311 when the wireless communication adapter 50 is not attached. A display board 515 that is positioned at the mounting position Pd1 (an example of the "first mounting position") when the lid 512 is mounted on the main body 311 with the wireless communication adapter 50 mounted is provided. A configuration is adopted in which whether or not the wireless communication adapter 50 is mounted on the adapter mounting portion 25 is determined based on which of the non-mounted position Pc1 and the mounted position Pd1 the 515 is located.

In this case, the display board 515 is an example of the "first member", and the display board main body 515a and the rib 315b are made of a resin material having sufficiently low light transmission (a resin material having no substantial light transmission). Are integrally formed. The display plate main body 515a is formed in a size that allows the opening 513 into which the cover plate 514 is fitted to be closed inside the casing 510 (inner surface side of the lid 512), and is slidable with respect to the main body 512 of the lid 512. It is fitted in the guide recess 316. Further, in the casing 510 of this example, as an example, the surface of the display plate main body 515a (the surface that can be visually recognized through the cover plate 514) is different from the color of the surface of the lid 512 (for example, black). It is colored (for example, red).

In the clamp meter 1E, the display plate 515 is constantly urged with respect to the main body of the lid 512 by an urging member (not shown) in the direction of arrow A1 shown in FIG. As a result, as shown in the figure, when the lid 512 is removed from the main body 311 the display board 515 is positioned at the non-mounted position Pc1, and the display board main body 515a of the display board 515 is opened. It is in a state where it does not overlap with the cover plate 514 fitted in the 513.

Therefore, when the lid 512 is attached to the main body 311 in which the wireless communication adapter 50 is not attached to the adapter attachment portion 25, the rib 315b does not come into contact with the wireless communication adapter 50 as shown by the broken line in FIG. As a result, the state in which the display board 515 (display board main body 515a) is positioned at the non-mounted position Pc1 is maintained. As a result, the state in which the display plate 515 (display plate main body 515a) cannot be visually recognized through the cover plate 514 is maintained.

On the other hand, when the lid 512 is attached to the main body 311 to which the wireless communication adapter 50 is attached to the adapter attachment portion 25, the rib 315b hits the wireless communication adapter 50 as shown by the solid line in FIG. The display board 515 (display board main body 515a) is moved from the non-mounted position Pc1 to the mounted position Pd1 in the direction of the arrow A2. As a result, the display plate main body 515a of the display plate 515 overlaps with the cover plate 514 fitted in the opening 513, and the display plate 515 (red display plate main body 515a) can be visually recognized through the cover plate 514. ..

As a result, in this clamp meter 1E, when the display plate 515 (display plate main body 515a) cannot be visually recognized through the cover plate 514 of the lid body 512 attached to the main body 311, that is, the position when the display plate 515 is not attached. When it is located at Pc1, it is possible to make the adapter mounting portion 25 determine that the wireless communication adapter 50 is not mounted, and the cover plate 514 of the lid body 512 attached to the main body portion 311 is transparent. When the display board 515 (display board main body 515a) can be visually recognized, that is, when the display board 515 is located at the mounting position Pd1, the wireless communication adapter 50 is mounted on the adapter mounting portion 25. It is possible to make a distinction.

As described above, in the clamp meter 1E, the lid 512 is positioned at the non-attached position Pc1 when the lid 512 is attached to the main body 311 when the wireless communication adapter 50 is not attached, and the wireless communication adapter. A display plate 515 that is positioned at the mounting position Pd1 when the lid 512 is mounted on the main body 311 with the 50 mounted is provided, and the display plate 515 is placed at either the non-mounting position Pc1 or the mounting position Pd1. It is configured so that it can be determined whether or not the wireless communication adapter 50 is mounted on the adapter mounting portion 25 based on whether or not it is positioned. Therefore, according to the clamp meter 1E, the wireless communication adapter 50 is attached to the adapter mounting portion 25 without turning on the power to electrically detect the wireless communication adapter 50 or removing the lid 512 from the main body 311. It is possible to visually and easily confirm whether or not the is attached.

Further, the clamp meter 1F shown in FIGS. 13 and 14 is still another example of the “measuring instrument”, and instead of the casing 410 in the clamp meter 1D described above, the main body portion 611 and the “lid body” (not shown). ) Is provided (another example of the "casing"). Note that the figure is a schematic cross-sectional view of the clamp meter 1F cut along the insertion direction of the wireless communication adapter 50 with respect to the adapter mounting portion 25, and details are omitted.

In this case, the main body 611 is still another example of the "main body", and the wireless communication adapter 50 or the like is attached to and detached from the opening 11a to the adapter mounting portion 25 in the same manner as the main body 411 of the clamp meter 1D. It is configured to be able to. The main body 611 is provided with an opening 613 at a position not facing the side surface 50b of the wireless communication adapter 50 mounted on the adapter mounting 25, and a cover plate 614 made of a light-transmitting resin material is provided. It is fitted in the opening 613. If there is no problem in terms of insulation and foreign matter intrusion, a configuration in which the cover plate 614 is not fitted into the opening 613 can be adopted (not shown).

Further, the main body 611 is positioned at the non-mounted position Pc2 (an example of the "second non-mounted position") when the wireless communication adapter 50 is not mounted, and is mounted when the wireless communication adapter 50 is mounted. A display board 615 (an example of the "second member") positioned at the time position Pd2 (an example of the "second mounting position") is provided, and the display board 615 is placed at either the non-mounting position Pc2 or the mounting position Pd2. A configuration is adopted in which whether or not the wireless communication adapter 50 is mounted on the adapter mounting portion 25 is determined based on whether or not the wireless communication adapter 50 is mounted. In this case, in the casing 610 of this example, as an example, the surface of the display plate 615 facing the cover plate 614 (the surface visible through the cover plate 614) is the color of the surface of the main body 611 (for example, black). ) Is colored (for example, red) and fitted in the guide recess 616.

In the clamp meter 1F, the display plate 615 is constantly urged with respect to the main body 611 in the direction of the arrow B1 shown in FIG. 13 by an urging member (not shown). As a result, as shown in the figure, when the wireless communication adapter 50 is not attached to the adapter attachment portion 25, the display board 615 is positioned at the non-attached position Pc2 and is fitted into the opening 613. The cover plate 614 and the display plate 615 are not overlapped with each other. Therefore, when the wireless communication adapter 50 is not attached, the display plate 615 is not visible through the cover plate 614.

On the other hand, when the wireless communication adapter 50 is attached to the adapter attachment portion 25, the display board 615 is moved by the wireless communication adapter 50 in the direction indicated by the arrow B2, and as shown in FIG. It is located at position Pd2. As a result, the cover plate 614 fitted in the opening 613 and the display plate 615 are overlapped with each other, and the red display plate 615 can be visually recognized through the cover plate 614.

As a result, in this clamp meter 1F, when the display plate 615 cannot be visually recognized through the cover plate 614 of the main body portion 611, that is, when the display plate 615 is located at the non-mounting position Pc2, the adapter mounting portion 25 When it is possible to determine that the wireless communication adapter 50 is not mounted and the display board 615 can be visually recognized through the cover plate 614 of the main body 611, that is, the position when the display board 615 is mounted. When it is located at Pd2, it is possible to make the adapter mounting portion 25 determine that the wireless communication adapter 50 is mounted.

As described above, in the clamp meter 1F, the main body 611 is positioned at the non-mounted position Pc2 when the wireless communication adapter 50 is not mounted, and at the mounted position Pd2 when the wireless communication adapter 50 is mounted. The display board 615 is provided, and it is possible to determine whether or not the wireless communication adapter 50 is mounted on the adapter mounting portion 25 based on whether the display board 615 is located at the non-mounted position Pc2 or the mounted position Pd2. It is configured in. Therefore, according to this clamp meter 1F, the wireless communication adapter is attached to the adapter mounting portion 25 without turning on the power to electrically detect the wireless communication adapter 50 or removing the "lid" from the main body portion 611. Whether or not the 50 is mounted can be visually confirmed reliably and easily.

Although illustration and detailed description are omitted, the configurations of the clamp meters 1A to 1F in the above example can be appropriately combined so that the presence or absence of the wireless communication adapter 50 attached to the adapter attachment portion 25 can be confirmed by a plurality of methods. It can also be configured.

Further, by removing the lid 12 from the main body 11 and opening the opening 11a, the wireless communication adapter 50 formed separately from the lid 12 can be attached to and detached from the adapter mounting portion 25. Although the above-mentioned clamp meter 1 and the like have been described as an example, instead of such a configuration, a component (a lid with a wireless communication adapter) in which the lid 12 and the wireless communication adapter 50 of the clamp meter 1 are integrally formed is used. By attaching to the main body 11, it is possible to adopt a configuration in which the “wireless communication unit (wireless communication adapter)” of this component is attached to the adapter mounting unit 25 (not shown).

When adopting such a configuration, by preparing the above-mentioned "lid body with wireless communication adapter" and the lid body 12 in the clamp meter 1, when "data communication processing" is required, the main body unit By attaching a "lid with a wireless communication adapter" to 11 and attaching the lid 12 to the main body 11 when "data communication processing" is unnecessary, the state where the "wireless communication unit" exists and the wireless communication unit Can be used in two modes in the absence of. In addition, it is possible to distinguish between the "lid" in which the "wireless communication unit" is integrally formed and the "lid" in which the "wireless communication unit" is not integrally formed (the color of the "lid" is different). , The presence or absence of the "wireless communication unit" is marked on the outer surface of the "lid body"), so that whether or not the "wireless communication unit" is attached without removing the "lid body" from the "main body unit" It can be easily identified.

In this way, the "lid body" and the "wireless communication unit" are integrally formed, and the opening 11a is closed by the "lid body" so that the "wireless communication unit" can be attached to the adapter attachment unit 25. By doing so, the "wireless communication unit" can be attached to the adapter attachment portion 25, and the "lid body" can be attached to the "main body portion" (the "opening" is closed by the "lid body") in one operation. It can be completed at the same time.

Even when adopting a configuration in which the "lid" and the "wireless communication unit" are integrally formed, by adopting the same configuration as the clamp meters 1B, 1D, 1F described above, the power is turned on and "wireless" is adopted. Without having to electrically detect the "communication unit" or removing the "lid" from the "main unit", the "lid" with the "wireless communication unit" integrally formed is installed, or "wireless communication" It is possible to visually confirm whether or not a "lid" having no "part" is attached.

In addition, instead of the wireless communication adapter 50 (a wireless communication device capable of wireless communication conforming to the Bluetooth standard), a wireless communication adapter capable of wireless communication conforming to a communication standard such as a wireless LAN or ZigBee (registered trademark). A "measuring instrument" can also be configured with a "first mounting unit" that can be mounted as a "wireless communication device". Further, instead of the battery 40 (or in addition to the battery 40), a removable memory or a fuse capable of recording the measurement result data D1 or the like can be attached as a "measuring instrument component other than the wireless communication unit". A "measuring instrument" can also be configured with a "mounting portion". Further, a "measuring instrument" having a built-in rechargeable secondary battery can be configured to include one "first mounting portion" without providing a "second mounting portion".

Further, take as an example a clamp meter 1 provided with an opening 11a so that the battery 40 can be attached to and detached from the battery mounting portion 21 and the wireless communication adapter 50 can be attached to and detached from the adapter mounting portion 25 with the lid body 12 removed. As explained above, the "opening" for attaching / detaching the "wireless communication unit" to / from the "first mounting part" and attaching / detaching the "measuring instrument component other than the wireless communication unit" to / from the "second mounting part" is independent. It is also possible to adopt a configuration in which each "opening" is closed by a separate "lid body".

Further, although the configuration of the clamp meter 1 or the like capable of executing the "current measurement process" and the "voltage measurement process" has been described as an example, instead of such a "measurement process" (or such a "measurement"). Clamp meter 1 etc. for "casing" and "first mounting part" in "measuring instrument" that can perform "measurement processing" such as "insulation resistance measurement processing" and "ground resistance measurement processing") It can also be configured in the same way as. In this case, in the "measuring instrument" having the "measuring unit" capable of executing the "insulation resistance measuring process" and the "ground resistance measuring process", a high voltage is applied to the "circuit board" or the like on which the "measuring unit" is mounted. Since it may be applied or a large current may flow, the "casing" is formed by mounting the wireless communication adapter 50 inside the "main body" and closing the "opening" with the "lid". It is preferable to adopt the configuration of the present application that reliably insulates the inside and outside of the.

100 Measurement system 1,1A to 1F Clamp meter 2 Mobile information terminal 3 Server 10,110,210,310,410,510,610 Casing 11,211,311,411,611 Main body 11a Opening 11b Insertion hole 11c Female screw 12, 112, 312, 512 Lid body 12a, 12b Contact part 12c Push pin 12d Insertion hole 13 Screw 20 Circuit board 21 Battery mounting part 21t, 25t, 41t, 51t Electrode 22 Measuring part 22a Clamp sensor part 23 Processing part 24 Memory Part 25 Adapter mounting part 25s, 51s Signal terminal 26 Push switch
30 Knob 31 Operation unit 32 Display unit 40 Battery 50 Wireless communication adapter 50a End face 50b Side surface 113,213,313,413,513,613 Openings 114,214,314,414,514,614 Cover plate 315,415 Shutter 315a Shutter Main body 315b Rib 316,416,616 Guide recess 515,615 Display board 515a Display board main body D0 Measured value D1 Measurement result data Pa1, Pa2 Visually restricted position Pb1, Pb2 Visually permissible position Pc1, Pc2 Non-mounted position Pd1, Pd2 Time position

Claims (16)

A measuring instrument in which a measuring unit for executing a measuring process is housed in a casing and capable of executing a predetermined data communication process with an external device.
A component mounting portion provided in the casing is provided so that measuring instrument components can be mounted.
The casing includes a main body portion provided with an opening that allows the measuring instrument component to be attached to and detached from the component mounting portion, and a lid that can close the opening.
The component mounting portion includes a first mounting portion to which a wireless communication unit as a measuring instrument component can be attached and detached.
The opening is provided in the main body portion so that the wireless communication portion can be attached to and detached from the first mounting portion in a state where the lid body is removed.
A measuring instrument configured to be able to execute the predetermined data communication process with the external device via the wireless communication unit mounted on the first mounting unit. The component mounting portion includes a second mounting portion on which the measuring instrument component other than the wireless communication unit can be mounted.
The opening allows the wireless communication unit to be attached to and detached from the first mounting portion and the measuring instrument component other than the wireless communication unit to be attached to and detached from the second mounting portion with the lid removed. The measuring instrument according to claim 1, which is provided in the unit. Claim 1 or 2 is configured such that the main body portion is attached to the main body portion and can be tightened with a detachment regulating screw that regulates the detachment of the lid body from the main body portion in a state where the opening is closed. The measuring instrument described. With the opening closed, the lid can be in contact with the wireless communication unit mounted on the first mounting portion to regulate the detachment of the wireless communication unit from the first mounting portion. The measuring instrument according to any one of claims 1 to 3, wherein a contact portion is provided. The measuring instrument according to any one of claims 1 to 4, wherein the lid body is configured so that the presence or absence of mounting of the wireless communication unit on the first mounting portion can be visually observed in a state where the opening is closed. The lid is in a state where the wireless communication unit is attached to the first attachment unit and the wireless communication unit is not attached to the first fluoroscopic unit made of a first material having light transmission visible. When the lid is mounted on the main body, it is positioned at the first regulated position that restricts the visual inspection of the first mounting portion through the first fluoroscopic portion, and the wireless communication unit is mounted. The claim is provided with a first shielding unit that is positioned at a first allowable position that allows the wireless communication unit to be visually recognized through the first fluoroscopic unit when the lid body is attached to the main body unit. Item 4. The measuring instrument according to any one of Items 1 to 5. The lid is positioned at the first non-mounted position when the lid is mounted on the main body when the wireless communication unit is not mounted, and the main body is mounted when the wireless communication unit is mounted. The portion is provided with a first member that is positioned at the first mounting position when the lid is mounted, and whether the first member is located at the first non-mounting position or the first mounting position. The measuring instrument according to any one of claims 1 to 6, which is configured to be able to determine whether or not the wireless communication unit is mounted on the first mounting unit based on the above. Claim 1 in which the lid body and the wireless communication unit are integrally formed, and the wireless communication unit can be mounted on the first mounting portion by closing the opening with the lid body. The measuring instrument according to any one of 3 to 3. The method according to any one of claims 1 to 8, wherein the main body portion is configured to visually indicate whether or not the wireless communication unit is attached to the first attachment portion in a state where the opening is closed by the lid body. Measuring instrument. The main body has a second fluoroscopic unit made of a second material having light transmission so that the wireless communication unit mounted on the first mounting unit can be visually transmitted, and a state in which the wireless communication unit is not mounted. It is positioned at a second restricted position that restricts the visual inspection of the first mounting portion through the second fluoroscopic unit, and when the wireless communication unit is mounted, the second see-through portion is seen through. The measuring instrument according to any one of claims 1 to 9, further comprising a second shielding unit located at a second allowable position that allows visual recognition of the wireless communication unit. The main body includes a second member that is positioned at the second non-mounted position when the wireless communication unit is not mounted and at the second non-mounted position when the wireless communication unit is mounted. , It is possible to determine whether or not the wireless communication unit is mounted on the first mounting portion based on whether the second member is located at the second non-mounting position or the second mounting position. The measuring instrument according to any one of claims 1 to 10, which is configured. A detection unit for detecting whether or not the opening is blocked by the lid is provided.
The measurement according to any one of claims 1 to 11, wherein the execution of the measurement process by the measuring unit is restricted in a state where the detection unit has detected that the opening is not closed. vessel. The measuring instrument according to any one of claims 1 to 12, wherein the main body and the lid are made of an insulating resin material. The measuring instrument according to any one of claims 1 to 13, wherein the first mounting unit includes an electrode for supplying power to the wireless communication unit. The measuring instrument according to any one of claims 1 to 14, wherein a portion having a high voltage during the measurement process exists in the main body portion. The measuring instrument according to claim 15, wherein the measuring unit is configured to be capable of executing at least one of a current measuring process, a voltage measuring process, an insulating resistance measuring process, and a ground resistance measuring process as the measuring process.

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