JP2021117058A - Hiding member, and electric instrument - Google Patents

Abstract

To provide a hiding member and electric instrument that can easily check information on an internal condition of the electric instrument.SOLUTION: A hiding member 80 is detachably attached to a main body 10a of an electric instrument 10. The main body 10a has: a circuit part; and a housing 20 that stores the circuit part. The circuit part includes an interface part 45 for performing at least one of a check and change of an internal condition of the electric instrument 10. The housing 20 has an opening part 212d that exposes the interface part 45. The hiding member 80 is provided with a cover part 81 that is detachably attached to the housing 20 so as to cover the opening part 212d; and a display part 82 that is provided on a side opposite the opening part 212d in the cover part 81, and is for displaying internal information on an internal condition of the electric instrument 10.SELECTED DRAWING: Figure 4

Description

The present disclosure generally relates to concealed members and electrical equipment. The present disclosure particularly relates to a hidden member that is detachably attached to the body of the electrical device and an electrical device that includes the hidden member.

Patent Document 1 discloses a power measuring unit (measuring device) which is a kind of electric device. The power measurement unit of Patent Document 1 has a function of measuring the power of each circuit in which a sensor unit (sensor) is installed and is installed at a predetermined position in a distribution board. The power measurement unit is connected to the sensor unit using a signal line and an electric wire, and outputs a power measurement value to an external monitoring device such as a personal computer via a communication line.

Japanese Unexamined Patent Publication No. 2014-199209

It is difficult to confirm information about the internal state of an electric device such as a power measuring unit (measuring device).

The challenge is to provide hidden members and electrical equipment that can confirm information about the internal state of the electrical equipment.

The hidden member of one aspect of the present disclosure is a hidden member that is detachably attached to the main body of an electric device. The main body has a circuit unit and a housing for accommodating the circuit unit. The circuit unit includes an interface unit for confirming and changing the internal state of the electric device. The housing has an opening that exposes the interface portion. The hidden member includes a covering portion and a display portion. The covering portion is detachably attached to the housing so as to cover the opening portion. The display unit is provided on the side of the cover portion opposite to the opening portion, and displays internal information regarding the internal state of the electric device. According to this aspect, information on the internal state of the electric device can be easily confirmed.

The electrical device of one aspect of the present disclosure includes the hidden member and the main body.

According to the aspect of the present disclosure, it is possible to have an effect that information on the internal state of the electric device can be confirmed.

FIG. 1 is a schematic view of a distribution board on which a measuring device (electrical device) of one embodiment is installed. FIG. 2 is a perspective view of the measuring device. FIG. 3 is another perspective view of the measuring device. FIG. 4 is another perspective view of the measuring device, showing a state in which the hidden member is removed from the main body. FIG. 5 is a cross-sectional view of the measuring device. FIG. 6 is another cross-sectional view of the measuring device. FIG. 7 is an exploded perspective view of the measuring device. FIG. 8 is an exploded perspective view of the circuit portion of the measuring device. FIG. 9 is another exploded perspective view of the circuit unit of the measuring device. FIG. 10 is an explanatory diagram of a method of assembling the measuring device. FIG. 11 is another explanatory view of the method of assembling the measuring device. FIG. 12 is another explanatory view of the method of assembling the measuring device. FIG. 13 is another explanatory view of the method of assembling the measuring device.

(1) Embodiment (1-1) Outline This embodiment relates to a measuring device (measuring unit) which is a kind of electric device. FIG. 1 shows a distribution board 100 to which the measuring device 10 of one embodiment is applied. The distribution board 100 is used to distribute electric power from an AC power source 200 which is an external power source. That is, the distribution board 100 is electrically connected to the AC power supply 200. The AC power supply is, for example, a commercial power supply. In FIG. 1, the distribution board 100 includes a main switch (main breaker) 110 and a plurality of branch switches (branch breakers) 120. It is not essential that the distribution board 100 is provided with a plurality of branch switches 120, and it is sufficient that the distribution board 100 has one or more branch switches 120. Further, the distribution board 100 includes a main switch 110 and a cabinet 130 accommodating a plurality of branch switches 120. The cabinet 130 is attached to a building material (eg, a building wall). The construction material is not limited to the wall of the room in the building (detached house, dwelling unit of apartment house, tenant building, etc.), and may be, for example, the ceiling or floor of the room in the building.

The main switch 110 includes a primary side end terminal, a secondary side terminal, and a contact connected to an electric circuit between the primary side terminal and the secondary side terminal. When the main switch 110 detects an abnormal state in which an overcurrent such as an electric leakage current or an overload current flows through the contacts, the main switch 110 opens the contacts and cuts off the electric circuit. Since the main switch 110 may have a conventionally known configuration, detailed description thereof will be omitted.

The branch switch 120 is a circuit breaker for wiring. The branch switch 120 includes a power supply terminal portion (primary side connection portion) and a load connection portion (secondary side connection portion). Further, the branch switch 120 includes a breaking circuit. The break circuit includes a contact device inserted into an electric circuit between the power supply terminal portion and the load connection portion, and a handle for operating the contact device. The power supply terminal is used for connecting to the power supply. The power supply terminal portion is used for electrical connection with the main switch 110. The load connection is used to connect to the load. Examples of the load include wiring equipment for connecting to electrical equipment. Wiring equipment includes outlets, hook ceilings, and the like. The branch switch 120 may have a thermal tripping device. The thermal tripping device includes, for example, a thermal element such as a bimetal or a trimetal, and is configured to open the contact device of the break circuit when the thermal element operates. Further, the branch switch 120 may have an electromagnetic tripping device. The electromagnetic tripping device includes, for example, an electromagnet device, and is configured to instantly open the contact device of the break circuit when the electromagnet device is activated. The branch switch 120 does not have to have a function as a wiring breaker. The branch switch 120 may be used, for example, as a switch, relay or demultiplexer.

The cabinet 130 includes a plurality of mounting members 140. The mounting member 140 is used to secure the branch switch 120 to the cabinet 130. In this embodiment, the mounting member 140 is a DIN rail.

The measuring device 10 of this embodiment is installed on the distribution board 100. The measuring device 10 is fixed to the cabinet 130 by being attached to the mounting member 140. Further, the measuring device 10 is electrically connected to the branch switch 120 of the distribution board 100 and receives the electric power from the AC power supply 200. Further, the measuring device 10 is electrically connected to the sensor 300 and acquires sensing information from the sensor 300.

In particular, the measuring device 10 of the present embodiment includes a main body 10a and a hidden member 80, as shown in FIGS. 2 and 4. The main body 10a has a circuit unit 30 and a housing 20 that houses the circuit unit 30. The circuit unit 30 includes an interface unit 45 for confirming and changing the internal state of the electric device 10. The housing 20 has an opening 212d that exposes the interface portion 45. The hidden member 80 is removably attached to the main body 10a of the electric device 10. The hidden member 80 includes a covering portion 81 and a display portion 82. The covering portion 81 is detachably attached to the housing 20 so as to cover the opening 212d. The display unit 82 is provided on the side of the cover unit 81 opposite to the opening 212d, and displays internal information regarding the internal state of the electric device 10.

As described above, in the measuring device 10 of the present embodiment, the hidden member 80 is detachably attached to the main body 10a of the measuring device 10. The hidden member 80 includes a display unit 82 that displays internal information regarding the internal state of the electric device 10. Therefore, according to the hidden member 80, information on the internal state of the electric device 10 can be easily confirmed. Further, in the hidden member 80, the covering portion 81 is detachably attached to the housing 20 so as to cover the opening 212d. That is, since the hidden member 80 hides the portion related to the content displayed on the display unit 82 in the electric device 10, it is possible to remember to change the content displayed on the display unit 82 when using the portion. It becomes.

(1-2) Details Hereinafter, the measuring device 10 of the present embodiment will be described in more detail with reference to the drawings (mainly FIGS. 2 to 13). As shown in FIGS. 2 to 7, the measuring device 10 includes a housing 20 and a circuit unit 30. The housing 20 has a first surface 20a and a second surface 20b that are both sides opposite to each other in a predetermined direction, and houses the circuit unit 30 (see FIGS. 5 to 7). In the present embodiment, the predetermined direction is the front-rear direction of the housing 20, the first surface 20a is the front surface of the housing 20, and the second surface 20b is the rear surface of the housing 20. In the following, when the predetermined direction is the front-rear direction, the first surface 20a of the housing 20 is referred to as the front surface 20a, and the second surface 20b of the housing 20 is referred to as a front surface 20a, if necessary, in order to make the explanation easier to understand. It is called the rear surface 20b. As shown in FIGS. 7 to 9, the circuit unit 30 includes a measurement unit 40, a communication unit 50, a power supply unit 60, and a support 70. The circuit unit 30 and the housing 20 form a main body 10a of the measuring device 10. As shown in FIGS. 2 and 4, a hidden member 80 is attached to the main body 10a.

(1-2-1) Circuit unit As shown in FIGS. 7 to 9, the circuit unit 30 includes a measurement unit 40, a communication unit 50, a power supply unit 60, and a support 70.

The measurement unit 40 generates measurement information regarding a predetermined physical quantity based on sensing information (for example, a measured value) from the sensor 300. In this embodiment, the sensor 300 is a current sensor. The current sensor is used for measuring the power supplied from the AC power source 200, the power supplied from power generation equipment such as a solar cell, a power storage device, and a fuel cell, and the power consumption of a load or the like. In this case, the predetermined physical quantity includes electric power (unit: W). In the case of the present embodiment, the measurement unit 40 generates measurement information (power measurement information) related to a predetermined physical quantity (power) based on the sensing information (current value) from the sensor 300.

As shown in FIGS. 8 and 9, the measuring unit 40 is configured by using the measuring board 41. The measuring board 41 is a board on which electronic components such as a printed wiring board can be mounted. The measuring substrate 41 has a rectangular plate shape, and has a first surface 41a and a second surface 41b in the thickness direction. The first surface 41a and the second surface 41b are substantially flat surfaces. The first surface 41a is a surface on the power supply unit 60 side. The first surface 41a is the surface of the measuring board 41 on the rear surface 20b side of the housing 20. The second surface 41b is a surface on the communication unit 50 side. Further, the measurement substrate 41 has one or more through holes 411 (plural in the present embodiment, two in the illustrated example), one or more (plural in the present embodiment, two in the illustrated example) positioning recesses 412, and one. It has the above (plural in the present embodiment, two in the illustrated example) notches 413. The through hole 411 is used to fix the measuring unit 40 to the support 70 by the screw S31. The positioning recess 412 is used to position the measuring unit 40 with respect to the support 70. In this embodiment, the positioning recess 412 is a through hole. The notch 413 is formed on the edge of the measuring substrate 41. The notch 413 is used to position the measuring unit 40 with respect to the housing 20.

The measuring unit 40 is configured by mounting electronic components on the measuring board 41. The measurement unit 40 includes a sensor connection unit 42, a connector 43, a connector (first connector) 44, and an interface unit 45. The sensor connection unit 42 is mounted on the measurement board 41 to electrically connect the sensor 300 (current sensor). The sensor connection unit 42 includes a jack 421 to which a LAN cable plug can be connected. In this embodiment, the sensor connection portion 42 includes a plurality of (three in the illustrated example) jacks 421. The jack 421 is mounted on the second surface 41b of the measuring board 41. In particular, the sensor connection portion 42 is mounted on the end portion of the measurement board 41. The connector 43 is used to electrically connect the measuring unit 40 and the power supply unit 60. The connector 43 is mounted on the first surface 41a of the measuring board 41. The connector 44 is used to electrically connect the measuring unit 40 and the communication unit 50. The connector 44 is mounted on the second surface 41b of the measuring board 41. The interface unit 45 is used to confirm and change the internal state of the electric device (measuring device 10) at least one of them. Examples of the internal state include information (software version, etc.) related to software of the electric device (measuring device 10), and set values such as parameters for calculating a physical quantity from sensing information. The interface 45 portion includes a connector 451 to which a communication cable can be connected. In this embodiment, the interface unit 45 includes a plurality of (three in the illustrated example) connectors 451. The connector 451 is mounted on the second surface 41b of the measuring board 41. In particular, the interface unit 45 is mounted on the end of the measurement board 41. The sensor connection unit 42 and the interface unit 45 are located at opposite ends of the measurement board 41.

The communication unit 50 transmits the measurement information generated by the measurement unit 40. In the present embodiment, the communication unit 50 transmits the measurement information generated by the measurement unit 40 by wireless communication. As an example, the communication unit 50 is capable of wireless communication with a communication device such as a gateway, and transmits measurement information to the communication device. The measurement information transmitted to the communication device is transmitted from the communication device to a preset information presenting device by wireless communication or wired communication. Then, the information presenting device can present the measurement information received from the communication device, which enables the user to confirm the measurement information on the information presenting device.

As shown in FIGS. 8 and 9, the communication unit 50 is configured by using the communication board 51. The communication board 51 is a board on which electronic components such as a printed wiring board can be mounted. Further, the communication board 51 is a board different from the measurement board 41. The communication board 51 has a rectangular plate shape and has a first surface 51a and a second surface 51b in the thickness direction. The first surface 51a and the second surface 51b are substantially flat surfaces. The first surface 51a is a surface on the measurement unit 40 side. The first surface 51a is the surface of the communication board 51 on the rear surface 20b side of the housing 20. The second surface 51b is a surface opposite to the measuring unit 40. Further, the communication board 51 has one or more through holes 511 (plural in the present embodiment, two in the illustrated example), and one or more (plural in the present embodiment, two in the illustrated example) positioning recesses 512 and one. It has the above (plural in the present embodiment, two in the illustrated example) notches 513. The through hole 511 is used to fix the communication unit 50 to the housing 20 by the screw S33. The positioning recess 512 is used to position the communication unit 50 with respect to the housing 20. In the present embodiment, the positioning recess 512 is a through hole. The notch 513 is used to position the communication unit 50 with respect to the housing 20. The notch 513 is formed on the edge of the communication board 51. In particular, the notch 513 is located on the communication board 51 at a position corresponding to the notch 413 of the measurement board 41.

The communication unit 50 is configured by mounting electronic components on a communication board 51. The communication unit 50 includes an antenna 52, a connector (second connector) 53, and an operation unit 54. The antenna 52 is used for wireless communication in the communication unit 50. The antenna 52 is mounted on the second surface 51b of the communication board 51. The connector 53 is mounted on the first surface 51a of the communication board 51. The connector 53 is used to electrically connect the measuring unit 40 and the communication unit 50. In particular, the connector (second connector) 53 can be directly connected to the connector (first connector) 44. That is, by connecting the connector 53 and the connector 44 to each other, the measuring unit 40 and the communication unit 50 are electrically connected. The operation unit 54 is used for setting communication by the communication unit 50. In the present embodiment, by operating the operation unit 54, the communication unit 50 can register the other party of wireless communication. In this embodiment, the operation unit 54 is a push switch.

The power supply unit 60 supplies electric power to the measurement unit 40 and the communication unit 50. In the present embodiment, the power supply unit 60 converts the input power into output power having a voltage lower than the input power and outputs the power. In this embodiment, the input power is AC power from the AC power supply 200. Therefore, the voltage of the input power is evaluated by the effective value. The output power is the operating power of the measuring unit 40 and the communication unit 50, and is DC power. In this way, the power supply unit 60 generates and outputs output power (DC power) for operation of the measurement unit 40 and the communication unit 50 based on the input power (AC power) from the AC power supply 200.

As shown in FIGS. 8 and 9, the power supply unit 60 is configured by using the power supply board 61. The power supply board 61 is a board on which electronic components such as a printed wiring board can be mounted. Further, the power supply board 61 is a board different from the measurement board 41 and the communication board 51. The power supply board 61 has a rectangular plate shape, and has a first surface 61a and a second surface 61b in the thickness direction. The first surface 61a and the second surface 61b are substantially flat surfaces. The first surface 61a is a surface of the power supply board 61 on the rear surface 20b side of the housing 20. The second surface 61b is a surface on the measurement unit 40 side. Further, the power supply board 61 has one or more through holes 611 (plural in the present embodiment, four in the illustrated example), and one or more (plural in the present embodiment, two in the illustrated example) positioning recesses 612 and one. It has the above (plural in the present embodiment, two in the illustrated example) notches 613. The through hole 611 is used to fix the power supply unit 60 to the support 70 by the screw S32. The positioning recess 612 is used to position the power supply unit 60 with respect to the support 70. In this embodiment, the positioning recess 612 is a through hole. The notch 613 is formed on the edge of the power supply board 61. The notch 613 is used to position the power supply unit 60 with respect to the housing 20.

The power supply unit 60 is configured by mounting electronic components on the power supply board 61. The power supply unit 60 includes a power supply terminal unit 62 and a connector 63. The power supply terminal portion 62 is mounted on the power supply board 61, and the power supply line from the external power supply (AC power supply 200) is electrically connected. In the present embodiment, the power supply terminal portion 62 is electrically connected to the branch switch 120 of the distribution board 100 by the power supply line. As a result, the power supply terminal portion 62 is electrically connected to the AC power supply 200. The power supply terminal portion 62 is mounted on the second surface 61b of the power supply board 61. In particular, the power supply terminal portion 62 is located at the end of the power supply board 61. The connector 63 is used to electrically connect the power supply unit 60 and the measurement unit 40. The connector 63 is mounted on the second surface 61b of the power supply board 61. In particular, the connector 63 can be connected to the connector 43. That is, by connecting the connector 63 and the connector 43 to each other, the measuring unit 40 and the power supply unit 60 are electrically connected. Therefore, the power supply unit 60 converts the power (input power) obtained from the AC power supply 200 via the power supply terminal unit 62 into output power for operating the measurement unit 40 and the power supply unit 60, and outputs the power from the connector 63. Will be done. The output power output from the connector 63 is supplied to the measuring unit 40 via the connector 43, and further supplied to the communication unit 50 via the connector 44 of the measuring unit 40 and the connector 53 of the communication unit 50. In this way, power is supplied from the power supply unit 60 to the measurement unit 40 and the communication unit 50.

The support 70 has electrical insulation. More specifically, the support 70 is a molded product of a resin material having electrical insulation. The support 70 is arranged between the measuring unit 40 and the power supply unit 60. As a result, the insulation distance between the measuring unit 40 and the power supply unit 60 is made longer than when the support 70 is not provided. In the present embodiment, the measurement board 41 of the measurement unit 40 and the power supply board 61 of the power supply unit 60 are physically fixed to the support 70. That is, the measuring unit 40 and the power supply unit 60 are physically coupled. The measuring unit 40 and the power supply unit 60 physically connected in this way form a circuit block 30a in the circuit unit 30. The circuit block 30a is an assembly of parts that can be handled as a unit. Further, the circuit block 30a has a support 70. The support 70 is physically fixed to the housing 20 within the housing 20. In particular, a coupling member 25 (see FIGS. 6, 8 and 9) described later is used for fixing the support 70 to the housing 20. Therefore, the circuit block 30a is physically fixed to the housing 20.

As shown in FIGS. 8 and 9, the support 70 includes a main body portion 71, one or more fixed portions 72 (plural in the present embodiment, two in the illustrated example), and one or more (plural in the present embodiment). In the illustrated example, it has two) wall portions 73. The main body 71 has a rectangular plate shape, and has a first surface 71a and a second surface 71b in the thickness direction. The first surface 71a is a surface on the power supply unit 60 side. Further, the first surface 71a is a surface of the main body 71 on the rear surface 20b side of the housing 20. The second surface 71b is a surface on the measurement unit 40 side. The main body 71 is formed in a size that covers at least a portion of the power supply board 61 through which input power passes. That is, the main body 71 functions as a protective portion that covers at least a portion of the power supply board 61 through which input power passes. Here, in the present embodiment, the main body 71 has a connection hole 711. The connection hole 711 is provided for electrical connection between the measurement unit 40 and the power supply unit 60. The connection hole 711 has a size that allows the connector 43 of the measuring unit 40 to pass through. That is, the support 70 is arranged between the measuring unit 40 and the power supply unit 60, but the measuring unit 40 and the power supply unit 60 directly connect the connector 43 and the connector 63 by using the connection hole 711. It is electrically connected by connecting. Further, the main body 71 has one or more notches 712 (plural in the present embodiment, two in the illustrated example). The notch 712 is formed on the edge of the main body 71. The notch 712 is used to position the support 70 with respect to the housing 20. The fixing portion 72 is used to fix the support 70 to the housing 20. The fixing portion 72 has a hole 721 through which the connecting member 25 is passed. In the present embodiment, the support 70 has two fixing portions 72, and the two fixing portions 72 are located at both corners diagonally located in the main body portion 71. The wall portion 73 increases the insulation distance between the coupling member 25 and the measuring unit 40 or the power supply unit 60 as compared with the case where the wall portion 73 is not provided. In the present embodiment, the wall portion 73 is located between the fixed portion 72 and the main body portion 71. In particular, the wall portion 73 is on the first surface 71a side of the main body portion 71.

As shown in FIG. 9, the support 70 has one or more fixed convex portions 74 (plural in the present embodiment, four in the illustrated example) and one or more (plural in the present embodiment, two in the illustrated example). It further has a support convex portion 75 and one or more (plural in the present embodiment, two in the illustrated example) positioning convex portions 76. The fixed convex portion 74, the support convex portion 75, and the positioning convex portion 76 are provided on the first surface 71a of the main body portion 71. The fixed convex portion 74 is used to fix the power supply unit 60 to the support 70. The fixed convex portion 74 has a screw hole 741 corresponding to the screw S32 at the tip thereof. The four fixed convex portions 74 are located at positions corresponding to the four through holes 611 of the power supply board 61 of the power supply unit 60, respectively. The support convex portion 75 functions as a spacer for keeping the distance between the main body portion 71 and the power supply board 61 constant. When the power supply board 61 is fixed to the main body 71, the support convex portion 75 hits the second surface 61b of the power supply board 61 to keep the distance between the main body 71 and the power supply board 61 constant. The positioning convex portion 76 is used to position the power supply portion 60 with respect to the support 70. More specifically, the power supply unit 60 is positioned with respect to the support 70 by fitting the positioning convex portion 76 into the positioning recess 612 of the power supply board 61 of the power supply unit 60. Here, the two positioning protrusions 76 are located at positions corresponding to the two positioning recesses 612 of the power supply board 61 of the power supply unit 60, respectively.

As shown in FIG. 8, the support 70 has one or more fixed convex portions 77 (plural in the present embodiment, two in the illustrated example) and one or more (plural in the present embodiment, two in the illustrated example). It further has a support convex portion 78 and one or more (plural in the present embodiment, two in the illustrated example) positioning convex portions 79. The fixed convex portion 77, the support convex portion 78, and the positioning convex portion 79 are provided on the second surface 71b of the main body portion 71. The fixed convex portion 77 is used to fix the measuring unit 40 to the support 70. The fixed convex portion 77 has a screw hole 771 corresponding to the screw S31 at the tip thereof. The two fixed convex portions 77 are located at positions corresponding to the two through holes 411 of the measuring board 41 of the measuring unit 40, respectively. The support convex portion 78 functions as a spacer for keeping the distance between the main body portion 71 and the measurement board 41 constant. When the measuring board 41 is fixed to the main body 71, the support convex portion 78 hits the first surface 41a of the measuring board 41 to keep the distance between the main body 71 and the measuring board 41 constant. The positioning convex portion 79 is used to position the measuring unit 40 with respect to the support 70. More specifically, the measuring unit 40 is positioned with respect to the support 70 by fitting the positioning convex portion 79 into the positioning concave portion 412 of the measuring board 41 of the measuring unit 40. Here, the two positioning protrusions 79 are located at positions corresponding to the two positioning recesses 412 of the measurement board 41 of the measurement unit 40, respectively.

In the circuit unit 30 described above, as shown in FIG. 6, the measurement board 41, the communication board 51, and the power supply board 61 are different boards. The communication board 51 is closer to the front surface 20a of the housing 20 than the measurement board 41 and the power supply board 61. Further, the power supply board 61 is closer to the rear surface 20b of the housing 20 than the measurement board 41 and the communication board 51. Further, the measurement board 41, the communication board 51, and the power supply board 61 are arranged in the front-rear direction of the housing 20. Further, the measurement board 41, the communication board 51, and the power supply board 61 are arranged in parallel with each other.

(1-2-2) Housing As shown in FIG. 7, the housing 20 includes a cover 21, a body 22, a mounting portion 23, a protective member 24, and one or more (plural in the present embodiment, illustrated example). Then, it has two) connecting members 25.

The connecting member 25 is a member for connecting the cover 21 and the body 22. In the present embodiment, the coupling member 25 is a screw (male screw). More specifically, the coupling member 25 has a threaded portion 251 and a head portion 252. A tool hole for fitting the tip of the tool is formed in the end surface 252a of the head portion 252, which is a surface opposite to the screw portion 251. Examples of the shape of the tool hole include a pickpocket, a cross hole, a square hole, a hexagonal hole, and a special hole. The special hole is not a general tool such as a Phillips screwdriver or a flat-blade screwdriver, but a hole corresponding to a special tool. An example of a special hole is a tri-wing. In this embodiment, the coupling member 25 is a tri-wing screw. Further, the connecting member 25 is made of metal.

The cover 21 and the body 22 form a portion of the housing 20 that houses the circuit unit 30. In particular, the cover 21 is a portion having the front surface 20a of the housing 20. The body 22 is a portion having a rear surface 20b of the housing 20. The cover 21 and the body 22 have electrical insulation. More specifically, the cover 21 and the body 22 are molded products of a resin material having electrical insulation.

As shown in FIGS. 7 and 10, the cover 21 has a box shape with one surface (rear surface) open. The cover 21 has a front wall portion 211 and a side wall portion 212. The front wall portion 211 has a rectangular outer peripheral shape. The front wall portion 211 is divided into three portions in the length direction: a central portion 211a, a first end portion 211b, and a second end portion 211c. The central portion 211a projects forward from the first end portion 211b and the second end portion 211c, whereby the accommodation space 211d is formed on the inner bottom surface of the cover 21. The accommodation space 211d is mainly a space for accommodating the communication unit 50. The side wall portion 212 projects rearward from the outer circumference of the front wall portion 211. In the present embodiment, since the outer peripheral shape of the front wall portion 211 is rectangular, the side wall portion 212 has a rectangular tubular shape. The side wall portion 212 has a connection port (first connection port) 212a and a connection port (second connection port) 212b. As shown in FIG. 2, the first connection port 212a is provided to expose the power supply terminal portion 62. The first connection port 212a is located at a portion of the side wall portion 212 corresponding to the second end portion 211c. Further, as shown in FIG. 3, the second connection port 212b is provided to expose the sensor connection portion 42. The second connection port 212b is located at a portion of the side wall portion 212 corresponding to the first end portion 211b. Here, in the side wall portion 212, a recess 212c is provided in the vicinity of the first connection port 212a (in the present embodiment, the front side). The recess 212c has a rectangular opening shape. The length direction of the recess 212c coincides with the width direction of the cover 21. An opening 212d is formed on the bottom surface of the recess 212c. That is, the opening 212d is in the vicinity of the first connection port 212a. The opening 212d includes one or more openings 212e (plural in the present embodiment, three in the illustrated example). The plurality of openings 212e are arranged along the length direction of the recess 212c. Further, each of the plurality of openings 212e has a rectangular shape. The opening 212d exposes the interface 45 of the circuit 30. More specifically, the plurality of openings 212e of the opening 212d expose the plurality of connectors 451 of the interface portion 45, respectively. In the present embodiment, the opening 212d is formed to be larger than the interface portion 45, not to match the size of the interface portion 45. This makes it possible to visually recognize the inside of the housing 20 from the gap between the opening 212d and the interface portion 45. More specifically, as shown in FIG. 13, the opening 212d makes it possible to visually recognize the connection state between the connector (first connector) 44 of the measuring unit 40 and the connector (second connector) 53 of the communication unit 50.

As shown in FIG. 10, the cover 21 has one or more (plural in the present embodiment, two in the illustrated example) first coupling convex portion 213 and one or more (plural in the present embodiment, two in the illustrated example). It further has a fixed convex portion 214, one or more (one in the present embodiment) support convex portion 215, and one or more (plural in the present embodiment, two in the illustrated example) positioning convex portions 216. The first coupling convex portion 213, the fixed convex portion 214, the support convex portion 215, and the positioning convex portion 216 are provided on the inner bottom surface of the cover 21. The first coupling convex portion 213 is used to couple the body 22 to the cover 21. The first coupling convex portion 213 has a hole 213a corresponding to the coupling member 25 at the tip thereof. The hole 213a is a screw hole corresponding to the screw portion 251 of the coupling member 25. The two first coupling convex portions 213 are diagonally located at both corners on the inner bottom surface of the cover 21. The fixed convex portion 214 is used to fix the communication portion 50 to the cover 21 (that is, the housing 20). The fixed convex portion 214 has a screw hole 214a corresponding to the screw S33 at the tip thereof. The two fixed convex portions 214 are located at positions corresponding to the two through holes 511 of the communication board 51 of the communication unit 50, respectively. The support convex portion 215 functions as a spacer for keeping the distance between the front wall portion 211 of the cover 21 and the communication board 51 constant. When the communication board 51 is fixed to the cover 21, the support convex portion 215 hits the second surface 51b of the communication board 51 to keep the distance between the front wall portion 211 of the cover 21 and the communication board 51 constant. The positioning convex portion 216 is used to position the communication unit 50 with respect to the cover 21. More specifically, the communication unit 50 is positioned with respect to the cover 21 by fitting the positioning convex portion 216 into the positioning recess 512 of the communication board 51 of the communication unit 50. Here, the two positioning convex portions 216 are located at positions corresponding to the two positioning concave portions 512 of the communication board 51 of the communication unit 50, respectively.

Further, as shown in FIG. 10, the cover 21 has one or more (plural in the present embodiment, two in the illustrated example) positioning pieces 217 and one or more (plural in the present embodiment, two in the illustrated example). It further has a positioning piece 218. The positioning piece 217 and the positioning piece 218 are provided on the inner surface of the side wall portion 212 of the cover 21. The positioning piece 217 is used to position the communication unit 50 with respect to the cover 21 (that is, the housing 20). More specifically, the positioning piece 217 fits into the notch 513 of the communication board 51 of the communication unit 50, so that the communication unit 50 is positioned with respect to the cover 21. Here, the two positioning pieces 217 are located at positions corresponding to the two notches 513 of the communication board 51 of the communication unit 50, respectively. The positioning piece 218 is used to position the circuit block 30a of the circuit unit 30 with respect to the cover 21 (that is, the housing 20). More specifically, the positioning piece 218 is fitted into the notch 413 of the measurement board 41 of the measurement unit 40, the notch 613 of the power supply board 61 of the power supply unit 60, and the notch 712 of the main body 71 of the support 70. , The circuit block 30a is positioned with respect to the cover 21. Here, the two positioning pieces 218 are the two notches 413 of the measurement board 41 of the measurement unit 40, the two notches 613 of the power supply board 61 of the power supply unit 60, and the main body 71 of the support 70. It is in a position corresponding to each notch 712.

Further, the cover 21 further has an operation piece 219 as shown in FIG. The operation piece 219 is provided to operate the operation unit 54 of the communication unit 50. The operation piece 219 is formed in the central portion 211a of the front wall portion 211. The operation piece 219 has flexibility. One end of the operation piece 219 in the length direction is a fixed end, and the other end in the length direction is a free end that can move in the front-rear direction with respect to the central portion 211a. The operation piece 219 is located in front of the operation unit 54, and by pressing the operation piece 219, the operation unit 54 is also pressed.

As shown in FIGS. 7 and 12, the body 22 has a box shape with one surface (front surface) open. The body 22 has a rear wall portion 221 and a side wall portion 222. The rear wall portion 221 has a rectangular outer peripheral shape. As shown in FIG. 3, the rear wall portion 221 is divided into three portions in the length direction: a central portion 231a, a first end portion 221b, and a second end portion 221c. The first end portion 221b and the second end portion 221c project rearward from the central portion 221a, whereby a mounting space 221d is formed on the bottom surface of the body 22. The mounting space 221d is open on both sides of the rear wall portion 221 in the width direction. The mounting space 221d is mainly a space for arranging the mounting member 140. Further, the rear wall portion 221 has a mounting recess 221e at the center portion in the width direction at the first end portion 221b. The mounting recess 221e is connected to the mounting space 221d by opening both sides of the rear wall portion 221 in the length direction. The side wall portion 222 projects rearward from the outer circumference of the rear wall portion 221. In the present embodiment, since the outer peripheral shape of the rear wall portion 221 is rectangular, the side wall portion 222 has a rectangular tubular shape.

As shown in FIG. 7, the body 22 has one or more (plural in the present embodiment, two in the illustrated example) second coupling convex portion 223 and one or more (plural in the present embodiment, five in the illustrated example). Further has a support convex portion 224 of. The second coupling convex portion 223 and the support convex portion 224 are provided on the inner bottom surface (front surface of the rear wall portion 221) of the body 22.

The second coupling convex portion 223 is used to couple the body 22 to the cover 21. The second coupling convex portion 223 is also used for fixing the support 70 together with the first coupling convex portion 213. In particular, in the support 70, the fixing portion 72 is sandwiched between the first coupling convex portion 213 and the second coupling convex portion 223. That is, the support 70 is sandwiched and fixed between the cover 21 and the body 22. The two second coupling convex portions 223 are diagonally located at both corners on the inner bottom surface of the body 22. More specifically, the two second coupling convex portions 223 are located at positions corresponding to the two first coupling convex portions 213 of the cover 21, respectively. As shown in FIG. 6, the second coupling convex portion 223 includes a tubular portion 223a projecting forward from the inner bottom surface of the rear wall portion 221 and a bottom portion 223b provided at the first end (front end) in the axial direction of the tubular portion 223a. To be equipped. The tubular portion 223a has a cylindrical shape. The inner diameter of the tubular portion 223a is larger than the outer diameter of the head portion 252 of the coupling member 25. The second end (rear end) of the tubular portion 223a in the axial direction is open to the outer bottom surface of the rear wall portion 221. As a result, the coupling member 25 can be inserted into the tubular portion 223a of the second coupling convex portion 223 from the rear of the housing 20. The bottom 223b has a hole 223c corresponding to the coupling member 25. The hole 223c has a size that allows the threaded portion 251 of the coupling member 25 to pass through but not the head portion 252. Further, the height of the second coupling convex portion 223 is higher than that of the first surface 61a in which the end surface 252a of the coupling member 25 on the rear surface 20b side of the housing 20 is the surface of the power supply board 61 on the rear surface 20b side of the housing 20. It is set so as to be on the front surface 20a side of the housing 20. In particular, in the present embodiment, the height of the second coupling convex portion 223 is set so that the end surface 252a of the coupling member 25 is closer to the front surface 20a of the housing 20 than the entire power supply unit 60. Further, regarding the height of the second coupling convex portion 223, the surface of the communication board 51 on the rear surface 20b side (first surface 51a) is the surface of the power supply board 61 on the rear surface 20b side (first surface). It is set so as to be farther from the end face 252a of the coupling member 25 than 61a).

The support convex portion 224 functions as a spacer for keeping the distance between the rear wall portion 221 of the body 22 and the power supply board 61 constant. When the power supply board 61 is fixed to the body 22, the support convex portion 224 hits the first surface 61a of the power supply board 61 to keep the distance between the rear wall portion 221 of the body 22 and the power supply board 61 constant.

The mounting portion 23 is used to mount the measuring device 10 on the mounting member 140. The mounting portion 23 is movably mounted in the mounting recess 221e of the rear wall portion 221 of the body 22 along the length direction of the rear wall portion 221. In particular, the mounting portion 23 is movable between a first position that does not protrude from the mounting recess 221e into the mounting space 221d and a second position that protrudes from the mounting recess 221e into the mounting space 221d. That is, by arranging the mounting member 140 in the mounting space 221d with the mounting portion 23 in the first position and changing the mounting portion 23 from the first position to the second position, the mounting member 140 becomes the body 22 and the mounting portion. It is sandwiched between 23 and 23. As a result, the measuring device 10 is attached to the attachment member 140. As described above, the housing 20 has a mounting portion 23 on the rear surface 20b for mounting the measuring device 10 on the mounting member 140.

The protective member 24 is attached to the cover 21. More specifically, the protective member 24 is a rectangular sheet. The protective member 24 may be made of a resin material. The protective member 24 is attached to the front surface of the central portion 211a of the front wall portion 211 of the cover 21 so as to cover the entire central portion 211a. The protective member 24 is attached to the central portion 211a of the front wall portion 211 of the cover 21 by using an adhesive or the like. The protective member 24 is flexible enough to operate the operation piece 219 via the protective member 24.

As described above, the housing 20 houses the circuit unit 30. Here, as shown in FIG. 2, the housing 20 exposes the sensor connection portion 42 of the measurement unit 40 of the circuit unit 30. Further, as shown in FIG. 3, the housing 20 exposes the interface unit 45 of the measurement unit 40 of the circuit unit 30 and the power supply terminal unit 62 of the power supply unit 60 of the circuit unit 30. In particular, the housing 20 exposes the power supply terminal portion 62 on the same surface as the interface portion 45. In the present embodiment, the power supply terminal portion 62 and the interface portion 45 are exposed on the side surface 20c of the housing 20. In particular, the power supply terminal portion 62 and the interface portion 45 are exposed at a specific portion on the side surface 20c of the housing 20. Here, the specific portion is a position hidden when the measuring device 10 is installed. The cabinet 130 of the distribution board 100 exposes only the central portion 211a of the front wall portion 211 of the housing 20 of the measuring device 10. Therefore, the side surface 20c of the housing 20 is hidden by the cabinet 130. In this case, the specific portion may be the entire side surface 20c of the housing 20.

Further, in the housing 20, as shown in FIG. 6, the end surface 252a of the coupling member 25 is closer to the front surface 20a of the housing 20 than the surface (first surface 61a) of the housing 20 on the rear surface 20b side of the power supply board 61. It is in. In particular, the end surface 252a of the coupling member 25 is closer to the front surface 20a of the housing 20 than the entire power supply unit 60. Further, the thickness direction of the power supply board 61 coincides with the direction in which the body 22 and the cover 21 are coupled by the coupling member 25 (that is, the front-rear direction of the housing 20). Further, in the measuring device 10, the measuring unit 40 is closer to the front surface 20a of the housing 20 than the end surface 252a of the coupling member 25. In particular, the surface (first surface 41a) of the measurement board 41 on the rear surface 20a side is closer to the front surface 20a of the housing 20 than the end surface 252a of the coupling member 25. Further, the thickness direction of the measurement board 41 coincides with the direction in which the body 22 and the cover 21 are connected by the coupling member 25 (that is, the front-rear direction of the housing 20). Further, in the measuring device 10, as shown in FIG. 6, the end surface 252a of the coupling member 25 is closer to the rear surface 20b of the housing 20 than the communication unit 50. In particular, the end surface 252a of the coupling member 25 is closer to the rear surface 20b of the housing 20 than the surface (first surface 51a) of the housing 20 on the rear surface 20b side of the communication board 51. Further, the thickness direction of the communication board 51 coincides with the direction in which the body 22 and the cover 21 are connected by the coupling member 25 (that is, the front-rear direction of the housing 20). Here, the surface of the communication board 51 on the rear surface 20b side (first surface 51a) of the coupling member 25 is larger than the surface of the power supply board 61 on the rear surface 20b side of the housing 20 (first surface 61a). Far from the end face 252a.

(1-2-3) Hidden member The hidden member 80 is detachably attached to the main body 10a of the measuring device 10 which is an electric device (see FIG. 2). In the present embodiment, as shown in FIGS. 4 and 5, the hidden member 80 is attached to the housing 20 so as to cover the opening 212d of the housing 20. That is, the hidden member 80 is a member for hiding the interface portion 45 exposed from the housing 20 so as not to be seen.

More specifically, the hidden member 80 includes a covering portion 81, a display portion 82, and a mounting portion 83. The cover portion 81 is detachably attached to the housing 20 so as to cover the opening 212d (interface portion 45). The cover portion 81 is a rectangular sheet having a size that fits in the recess 212c of the cover 21 of the housing 20. The covering portion 81 has a first surface 81a and a second surface 81b in the thickness direction. The cover portion 81 is attached to the housing 20 with the second surface 81b facing the opening 212d (interface portion 45) side. Further, the covering portion 81 has a shape that fits into the recess 212c. That is, the covering portion 81 comprehensively covers the plurality of openings 212e of the opening 212d, thereby covering the entire opening 212d (interface portion 45). Examples of the material of the covering portion 81 include a resin material and a metal material. The display unit 82 is provided on the side of the cover unit 81 opposite to the interface unit 45. That is, the display unit 82 is provided on the first surface 81a of the cover unit 81. The display unit 82 is used to display information (internal information) regarding the internal state of the electric device (measuring device 10). The internal information can be selected from the confirmation information of the internal state confirmed by using the interface unit 45 and the change information of the internal state changed by using the interface unit 45. Examples of the confirmation information include the current information (current software version, etc.) regarding the software of the electric device (measuring device 10), and the current set values such as parameters for calculating the physical quantity from the sensing information. Examples of the change information include changed information (such as the version of the changed software) regarding the software of the electric device (measuring device 10) and changed set values such as parameters for calculating a physical quantity from the sensing information. The change information may include a history of information (software version, etc.) related to software of the electric device (measuring device 10) and a history of set values such as parameters for calculating a physical quantity from sensing information. In the present embodiment, the display unit 82 includes a unique portion that represents internal information. The unique part may represent internal information by characters, colors, and shapes. For example, the unique portion may be a character string representing the software version, or a color or shape corresponding to the software version. In this embodiment, the unique part is a character string representing a software version. The mounting portion 83 is used to removably mount the covering portion 81 to the housing 20. In this embodiment, the mounting portion 83 contains an adhesive. More specifically, the mounting portion 83 is an adhesive layer that allows the covering portion 81 to be peeled off from the housing 20. The mounting portion 83 is provided on the opening 212d (interface portion 45) side of the covering portion 81. That is, the mounting portion 83 is provided on the second surface 81b of the covering portion 81.

The hidden member 80 is removed from the housing 20 when the interface unit 45 is used. This allows the operator to perform processing using the interface unit 45. After that, the operator attaches the hidden member 80 corresponding to the content of the processing performed by using the interface unit 45 to the housing 20. In the present embodiment, when the processing is performed using the interface unit 45, the hidden member 80 is replaced. For example, when the software version of the measuring device 10 is 1.0, the housing 20 of the measuring device 10 has a hidden member 80 on which the display unit 82 indicates that the software version of the measuring device 10 is 1.0. Is installed. Then, when the operator changes the software version of the measuring device 10 from 1.0 to 2.0, first, the hidden member 80 is removed from the housing 20 so that the interface unit 45 can be used. Then, the operator connects the communication cable to the interface unit 45, accesses the measuring device 10 from the management terminal, and upgrades the software version. After this, the operator removes the communication cable from the interface unit 45. After this, the operator attaches a hidden member 80 to the housing 20 indicating that the display unit 82 indicates that the software version of the measuring device 10 is 2.0, and covers the interface unit 45 with the hidden member 80. As a result, it is possible to confirm the information regarding the internal state of the measuring device 10 by the appearance of the measuring device 10.

(1-3) Assembling Method The assembling method of the measuring device 10 will be described below with reference to FIGS. 10 to 13.

First, as shown in FIG. 10, the communication unit 50 is attached to the cover 21. The communication unit 50 is arranged in the accommodation space 211d of the cover 21 with the second surface 51b of the communication board 51 facing the front wall portion 211 of the cover 21. At this time, the two positioning pieces 217 of the cover 21 fit into the two notches 513 of the communication board 51, respectively. Further, the two positioning protrusions 216 of the cover 21 fit into the two positioning recesses 512 of the communication board 51. As a result, the communication unit 50 is positioned with respect to the cover 21. Then, the screw S33 is coupled to the screw hole 214a of the fixed convex portion 214 of the cover 21 via the through hole 511 of the communication board 51. As a result, the communication unit 50 is fixed to the cover 21.

Next, as shown in FIG. 11, the circuit block 30a is housed in the cover 21. The circuit block 30a is prepared in advance by connecting the measuring unit 40, the power supply unit 60, and the support 70 to each other. The circuit block 30a is housed in the cover 21 with the measuring unit 40 facing the communication unit 50. As a result, the connector 44 of the measuring unit 40 is connected to the connector 53 of the communication unit 50. Further, the two positioning pieces 218 of the cover 21 fit into the two notches 413 of the measuring board 41, the two notches 712 of the main body 71, and the two notches 613 of the power supply board 61, respectively. As a result, the circuit block 30a is positioned with respect to the cover 21. Further, the hole 213a of the first coupling convex portion 213 of the cover 21 is exposed from the hole 721 of the fixing portion 72 of the support 70 of the circuit block 30a.

Next, as shown in FIG. 12, the body 22 is coupled to the cover 21. First, the body 22 is arranged so as to cover the opening on the rear surface of the cover 21. Next, the coupling member 25 is inserted into the second coupling convex portion 223 of the body 22. Then, the screw portion 251 of the coupling member 25 is passed through the hole 223c of the bottom portion 223b of the second coupling convex portion 223 and the hole 721 of the fixing portion 72 of the support 70 into the screw hole 213a of the first coupling convex portion 213 of the cover 21. Join. As a result, the cover 21 and the body 22 are joined by the connecting member 25. Further, the support 70 is physically fixed to the housing 20 by the coupling member 25. That is, the circuit block 30a is also physically fixed to the housing 20.

Then, after the cover 21 and the body 22 are connected, as shown in FIG. 13, the connector (first connector) 44 of the measuring unit 40 and the connector (second connector) of the communication unit 50 are passed through the opening 212d of the housing 20. The connection state with the connector) 53 is visually confirmed.

Finally, the hidden member 80 is attached to the housing 20. More specifically, the covering portion 81 of the hidden member 80 is fitted into the recess 212c so that the second surface 81b thereof faces the opening 212d (interface portion 45). Then, the cover portion 81 is detachably attached to the housing 20 by the attachment portion 83 of the hidden member 80. Since the display unit 82 is on the side opposite to the opening 212d (interface unit 45) in the cover unit 81, the internal information of the measuring device 10 can be confirmed by the display unit 82.

(2) Modified Example The embodiment of the present disclosure is not limited to the above embodiment. The above-described embodiment can be changed in various ways depending on the design and the like as long as the object of the present disclosure can be achieved. Examples of modifications of the above embodiment are listed below.

In one modification, the shape of the constituent members of the measuring device 10 is not necessarily limited to the shape of the above-described embodiment, and can be appropriately changed according to the design of the measuring device 10, specification requirements, and the like. For example, the housing 20 may have a circular or polygonal box shape as a whole. Further, the number of constituent members of the measuring device 10 can be changed according to the use of the constituent members. For example, the number of screws S31 to S33 can be changed as appropriate.

In one modification, the circuit unit 30 may include a board other than the measurement board 41, the communication board 51, and the power supply board 61. That is, the circuit unit 30 may have other circuit elements in addition to the measurement unit 40, the communication unit 50, and the power supply unit 60. Further, the arrangement order of the measurement board 41, the communication board 51, and the power supply board 61 is not particularly limited. As an example, the communication board 51 does not necessarily have to be on the front surface 20a side of the housing 20 with respect to the measurement board 41 and the power supply board 61. Further, the power supply board 61 does not necessarily have to be on the rear surface 20b side of the housing 20 with respect to the measurement board 41 and the communication board 51. Further, the measurement board 41, the communication board 51, and the power supply board 61 do not necessarily have to be arranged in the front-rear direction of the housing 20. Further, the measurement board 41, the communication board 51, and the power supply board 61 do not have to be arranged in parallel with each other. Further, the circuit unit 30 may have a single substrate, and the measurement unit 40, the communication unit 50, and the power supply unit 60 may be configured by the single substrate.

In one modification, the measuring unit 40 may be configured to correspond to a sensor other than the current sensor. That is, the sensor 300 is not limited to the current sensor. For example, the sensor 300 can be selected from various sensors such as a temperature sensor, a humidity sensor, a flow rate sensor for a fluid such as gas or liquid, an electromagnetic wave sensor, a human sensor, an image sensor, and an ultrasonic sensor. The measurement unit 40 can set the processing content according to the sensor 300. Further, the measuring unit 40 may be composed of a plurality of measuring boards 41 instead of a single one. Further, the shape of the measuring board 41 can be changed as appropriate. Further, in the measurement board 41, the through hole 411, the positioning recess 412, and the notch 413 are arbitrary elements. Further, the sensor connection portion 42 does not necessarily have to include a jack 421 to which a plug of a LAN cable can be connected, and may include a dedicated connector or a connector corresponding to another type of plug. Further, the connectors 43 and 44 do not need to be directly connected to the corresponding connectors 63 and 53, and may be indirectly connected by using an electric wire or the like. Further, the interface unit 45 may be provided on the communication board 51 or the power supply board 61 instead of the measurement board 41. In short, the interface unit 45 can be provided on any substrate of the circuit unit 30. In this case, the interface portion 45 is preferably located at the end portion of the substrate. In this way, the interface portion 45 can be easily exposed to the outside from the housing 20. Further, the positions of the sensor connection portion 42, the connectors 43, 44, and the interface portion 45 on the measurement board 41 are not particularly limited.

In one modification, the communication unit 50 may transmit the measurement information generated by the measurement unit 40 by wire communication. When the communication unit 50 performs wired communication, the antenna 52 and the operation unit 54 are not indispensable. Further, the communication unit 50 may be composed of a plurality of communication boards 51 instead of a single one. Further, the shape of the communication board 51 can be changed as appropriate. Further, in the communication board 51, the through hole 511, the positioning recess 512, and the notch 513 are arbitrary elements. Further, the antenna 52 is not a component independent of the communication board 51, but may be printed on the communication board 51. Further, the operation unit 54 may be mounted on the measurement board 41 or the power supply board 61 instead of the communication board 51. In short, the operation unit 54 may be mounted on a specific board among the measurement board 41, the communication board 51, and the power supply board 61. Here, it is preferable that the specific substrate is physically fixed to the housing 20. Further, the operation unit 54 may be used for different purposes depending on which of the measurement board 41, the communication board 51, and the power supply board 61 is the specific board. For example, if the specific board is the measurement board 41, the operation unit 54 may be used for setting the measurement by the measurement unit 40. Further, if the specific board is the power supply board 61, the operation unit 54 may be used for setting the power supply by the power supply unit 60.

In one modification, the power supply unit 60 may supply power to the measurement unit 40 and the communication unit 50 from the built-in battery of the measurement device 10 instead of an external power source such as the AC power supply 200. Further, the power supply unit 60 may be composed of a plurality of power supply boards 61 instead of a single power supply unit 60. Further, the shape of the power supply board 61 can be changed as appropriate. Further, in the power supply board 61, the through hole 611, the positioning recess 612, and the notch 613 are arbitrary elements. Further, the power supply unit 60 may be electrically connected to the communication unit 50 without going through the measurement unit 40.

In one modification, the support 70 may have at least the main body 71. For example, the support 70 does not have to be directly fixed to the housing 20. Further, the shape of the main body 71 can be changed as appropriate. Further, in the main body 71, the connection hole 711, the fixed convex portion 74, the support convex portion 75, the positioning convex portion 76, the fixed convex portion 77, the support convex portion 78, and the positioning convex portion 79 are arbitrary. It is an element. Also, the support 70 is not essential.

In one modification, the housing 20 does not necessarily have to include the mounting portion 23 and the protective member 24. Further, the predetermined direction is the left-right direction of the housing 20, and the first surface 20a and the second surface 20b may be both side surfaces of the housing 20. Further, the configurations of the cover 21 and the body 22 can be appropriately changed according to the configuration of the circuit unit 30. For example, the cover 21 and the body 22 may have a portion for exposing a part of the circuit portion 30, if necessary. On the contrary, if it is not necessary to expose a part of the circuit unit 30, the portion for exposing a part of the circuit unit 30 can be omitted. Further, in the cover 21 and the body 22, the parts used for fixing and positioning the circuit portion 30 (for example, the fixed convex portion 214, the support convex portion 215, etc.) can be omitted as appropriate.

In one modification, in the housing 20, the end surface 252a of the coupling member 25 is not necessarily on the front surface 20a side of the housing 20 with respect to the rear surface 20b side surface (first surface 61a) of the housing 20 on the power supply board 61. There is no need. Further, the measuring unit 40 does not necessarily have to be on the front surface 20a side of the housing 20 with respect to the end surface 252a of the coupling member 25. In particular, the surface (first surface 41a) of the measurement board 41 on the rear surface 20a side may not be closer to the front surface 20a of the housing 20 than the end surface 252a of the coupling member 25. Further, the end surface 252a of the coupling member 25 does not necessarily have to be on the rear surface 20b side of the housing 20 with respect to the communication unit 50. In particular, the end surface 252a of the coupling member 25 does not have to be closer to the rear surface 20b of the housing 20 than the surface (first surface 51a) of the housing 20 on the rear surface 20b side of the communication board 51. Further, the surface of the communication board 51 on the rear surface 20b side (first surface 51a) is the end surface of the coupling member 25 rather than the surface of the power supply board 61 on the rear surface 20b side of the housing 20 (first surface 61a). It does not have to be far from 252a.

In one modification, the coupling member 25 may be another fastener such as a bolt and a nut instead of a screw (male screw). Further, the connecting member 25 can be omitted.

In one modification, the hidden member 80 may have at least a covering portion 81 and a display portion 82. The shape of the covering portion 81 can also be changed as appropriate. Further, the display unit 82 may include a margin portion for entering internal information. In this case, the internal information (confirmation information or change information) can be entered in the display unit 82 according to the process (confirmation or change of the internal state) performed by using the interface unit 45. The display unit 82 may include both a margin portion and a unique portion. Further, the content of the display unit 82 may be changed, and in this way, the hidden member 80 itself does not need to be replaced. Further, the mounting portion 83 may have a mechanical structure that is physically coupled to the housing 20. For example, the mounting portion 83 may include a mechanical structure that enables screwing of the covering portion 81 to the housing 20 and fitting of the covering portion 81 and the housing 20. Further, the mounting portion 83 may include both a mechanical structure and an adhesive. In short, the mounting portion 83 may include at least one of an adhesive and a mechanical structure that is physically coupled to the housing 20.

(3) Aspects As is clear from the above embodiments and modifications, the present disclosure includes the following aspects. In the following, reference numerals are given in parentheses only to clearly indicate the correspondence with the embodiments.

The first aspect is a hidden member (80) that is detachably attached to the main body (10a) of the electrical device (10). The main body (10a) has a circuit unit (30) and a housing (20) for accommodating the circuit unit (30). The circuit unit (30) includes an interface unit (45) for confirming and changing the internal state of the electric device (10). The housing (20) has an opening (212d) that exposes the interface portion (45). The hidden member (80) includes a covering portion (81) and a display portion (82). The covering portion (81) is detachably attached to the housing (20) so as to cover the opening (212d). The display unit (82) is provided on the side of the cover portion (81) opposite to the opening (212d), and displays internal information regarding the internal state of the electric device (10). According to this aspect, information on the internal state of the electric device (10) can be easily confirmed.

The second aspect is the hidden member (80) based on the first aspect. In the second aspect, the internal information includes confirmation information of the internal state confirmed by using the interface unit (45). According to this aspect, information on the internal state of the electric device can be easily confirmed.

The third aspect is the hidden member (80) based on the first or second aspect. In the third aspect, the internal information includes the change information of the internal state changed by using the interface unit (45). According to this aspect, information on the internal state of the electric device can be easily confirmed.

The fourth aspect is the hidden member (80) based on any one of the first to third aspects. In the fourth aspect, the display unit (82) includes a margin portion for entering the internal information. According to this aspect, information on the internal state of the electric device can be easily confirmed.

A fifth aspect is a hidden member (80) based on any one of the first to fourth aspects. In a fifth aspect, the display unit (82) includes a unique portion representing the internal information. According to this aspect, information on the internal state of the electric device can be easily confirmed.

The sixth aspect is the hidden member (80) based on any one of the first to fifth aspects. In a sixth aspect, the hidden member (80) includes a mounting portion (83) for detachably mounting the covering portion (81) to the housing (20). According to this aspect, the hidden member (80) can be easily attached and detached.

The seventh aspect is the hidden member (80) based on the sixth aspect. In a seventh aspect, the mounting portion (83) comprises at least one of an adhesive and a structure that is physically bonded to the housing (20). According to this aspect, the hidden member (80) can be easily attached and detached.

The eighth aspect is the hidden member (80) based on any one of the first to seventh aspects. In the eighth aspect, the housing (20) has a recess (212c). The opening (212d) is at the bottom of the recess (212c). The covering portion (81) has a shape that fits into the recess (212c). According to this aspect, the possibility of the hidden member (80) falling off unintentionally can be reduced.

The ninth aspect is the electrical device (10), which includes the hidden member (80) of any one of the first to eighth aspects and the main body (10a). According to this aspect, information on the internal state of the electric device (10) can be easily confirmed.

A tenth aspect is an electrical device (10) based on the ninth aspect. In a tenth aspect, the interface unit (45) includes a connector (451) to which a communication cable can be connected. According to this aspect, information on the internal state of the electric device (10) can be easily confirmed.

The eleventh aspect is an electric device (10) based on the ninth or tenth aspect. In the eleventh aspect, the circuit unit (30) includes a substrate (41). The interface portion (45) is located at the end of the substrate (41). According to this aspect, the interface portion (45) can be easily exposed.

A twelfth aspect is an electrical device (10) based on any one of the ninth to eleventh aspects. In a twelfth aspect, the circuit unit (30) includes a power supply terminal unit (62) to which a power supply line from an external power supply (200) can be connected. The housing (20) exposes the power supply terminal portion (62) to the same surface as the interface portion (45). According to this aspect, information on the internal state of the electric device (10) can be easily confirmed.

A thirteenth aspect is an electrical device (10) based on the twelfth aspect. In a thirteenth aspect, the housing (20) has a front surface (20a), a rear surface (20b), and a side surface (20c). The power supply terminal portion (62) and the interface portion (45) are exposed on the side surface (20c) of the housing (20). According to this aspect, information on the internal state of the electric device (10) can be easily confirmed.

The fourteenth aspect is the electrical device (10) based on the thirteenth aspect. In the fourteenth aspect, the power supply terminal portion (62) and the interface portion (45) are exposed to a specific portion on the side surface (20c) of the housing (20). The specific portion is a position hidden when the electric device (10) is installed. According to this aspect, information on the internal state of the electric device (10) can be easily confirmed.

A fifteenth aspect is an electrical device (10) based on any one of the ninth to fourteenth aspects. In a fifteenth aspect, the circuit unit (30) includes a measurement unit (40) that generates measurement information regarding a predetermined physical quantity based on sensing information from the sensor (300). According to this aspect, information on the internal state of the electric device (10) can be easily confirmed.

10 Measuring device (electrical equipment)
10a Main body 20 Housing 20a First side (front)
20b 2nd surface (rear surface)
20c Side surface 212c Recession 212d Opening 30 Circuit part 40 Measuring part 41 Measuring board (board)
45 Interface part 451 Connector 62 Power supply terminal part 80 Hidden member 81 Covering part 82 Display part 83 Mounting part 200 AC power supply (external power supply)
300 sensor

Claims (15)

A hidden member that can be detachably attached to the body of an electrical device.
The main body has a circuit unit and a housing for accommodating the circuit unit.
The circuit unit includes an interface unit for checking and changing the internal state of the electric device.
The housing has an opening that exposes the interface portion.
The hidden member is
A covering portion that is detachably attached to the housing so as to cover the opening, and a covering portion.
A display unit provided on the side of the covering portion opposite to the opening and for displaying internal information regarding the internal state of the electric device, and a display unit.
To prepare
Hidden member. The internal information includes confirmation information of the internal state confirmed by using the interface unit.
The hidden member of claim 1. The internal information includes change information of the internal state changed by using the interface unit.
The hidden member of claim 1 or 2. The display unit includes a margin for entering the internal information.
A hidden member according to any one of claims 1 to 3. The display unit includes a unique portion representing the internal information.
A hidden member according to any one of claims 1 to 4. A mounting portion for detachably mounting the covering portion to the housing is provided.
A hidden member according to any one of claims 1 to 5. The attachment comprises at least one of an adhesive and a structure that is physically bonded to the enclosure.
The hidden member of claim 6. The housing has a recess and
The opening is at the bottom of the recess
The covering portion has a shape that fits into the recess.
A hidden member according to any one of claims 1 to 7. With any one of the hidden members of claims 1 to 8,
With the main body
To prepare
Electrical equipment. The interface unit includes a connector to which a communication cable can be connected.
The electrical device of claim 9. The circuit unit includes a substrate and includes a substrate.
The interface section is located at the end of the substrate.
The electrical device of claim 9 or 10. The circuit unit includes a power supply terminal unit to which a power supply line from an external power source can be connected.
The housing exposes the power supply terminal portion to the same surface as the interface portion.
An electrical device according to any one of claims 9 to 11. The housing has a front surface, a rear surface, and a side surface.
The power supply terminal portion and the interface portion are exposed on the side surface of the housing.
The electrical device of claim 12. The power supply terminal portion and the interface portion are exposed at a specific portion on the side surface of the housing.
The specific part is a position hidden when the electric device is installed.
The electrical device of claim 13. The circuit unit includes a measurement unit that generates measurement information regarding a predetermined physical quantity based on sensing information from the sensor.
An electrical device according to any one of claims 9 to 14.

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