JP7213461B2 - Wiring device and control method - Google Patents

Description

FIELD OF THE DISCLOSURE The present disclosure generally relates to a wiring device and control method, and more particularly to a wiring device that senses temperature within a device body and a control method for the wiring device.

Patent Document 1 discloses a first connecting portion to which a wire from an external power source is electrically connected, and a second connecting portion to which an insertion plug provided on a wire from an electrical device is detachably connected. A wiring device is described. The wiring device includes, for example, a temperature measurement unit attached to one or more locations of the first connection portion and the second connection portion, and a breaker portion that electrically cuts off the connection between the first connection portion and the second connection portion. , is equipped with

In the wiring device described in Patent Document 1, when it is determined that there is an abnormality based on the temperature detected by the temperature measuring section, the contact is turned off by the breaking section. Therefore, if the Joule heat generated at the contact area between the first connecting part and the wire increases due to poor connection during installation or the influence of vibration during use, the temperature measured by the temperature measuring part will rise, and the breaking part will The contact can be turned off to cut off the power supply to the electrical equipment.

JP 2016-58332 A

By the way, for a wiring device having a function of detecting the temperature inside the device main body like the wiring device of Patent Document 1, for example, before shipping after manufacturing, the temperature measurement part (temperature detection part) is not normal. Operation check (inspection) may be performed. However, trying to reproduce a situation close to the abnormal temperature rise that may actually occur in the wiring device in order to increase the reliability of the operation check may degrade the quality of the wiring device before it is used by the user. There is

The present disclosure is made in view of the above reasons, and aims to provide a wiring device and a control method that can improve the ease of operation confirmation regarding temperature detection performance while suppressing deterioration in quality. .

A wiring accessory according to an aspect of the present disclosure includes an appliance main body, a temperature detector, and a controller. The temperature detection unit detects a temperature corresponding to a power supply line in the instrument main body. The control unit makes a determination based on the temperature detected by the temperature detection unit, and performs at least one of cutting off the power supply path and notifying the temperature according to the result of the determination. The control unit, as operation modes, makes the determination based on a first algorithm including a determination of comparing the temperature with a first temperature threshold; a second mode as an operation mode for testing performed based on a second algorithm including a determination of comparing the temperature with a second temperature threshold lower than the first temperature threshold, different from the first algorithm; . The controller switches from the first mode to the second mode in response to a predetermined operation. The second algorithm includes determining whether the value based on the temperature detected by the temperature detection unit falls within a predetermined range, and the lower limit of the predetermined range is the second temperature threshold. and the upper limit of the predetermined range is a third temperature threshold set between the first temperature threshold and the second temperature threshold.

A control method according to an aspect of the present disclosure is a wiring device control method. The control method includes a detection step, a determination step, an execution step, and a switching step. In the detection step, the temperature corresponding to the power feed path in the device main body of the wiring device is detected. In the determination step, determination is made based on the temperature detected in the detection step. In the execution step, at least one of cutting off the power supply path and notifying the temperature is performed according to the result of the determination. In the determination step, as an operation mode, a first mode as a normal operation mode in which the determination is performed based on a first algorithm including a determination of comparing the temperature with a first temperature threshold; a second mode as an operation mode for testing performed based on a second algorithm including a determination of comparing the temperature with a second temperature threshold lower than the first temperature threshold, different from the first algorithm; . In the switching step, the mode is switched from the first mode to the second mode according to a predetermined operation. The second algorithm includes determining whether the value based on the temperature detected in the detecting step falls within a predetermined range, and the lower limit of the predetermined range is the second temperature threshold. , the upper limit of the predetermined range is a third temperature threshold set between the first temperature threshold and the second temperature threshold.

According to the present disclosure, there is an advantage that it is possible to improve the ease of operation confirmation regarding temperature detection performance while suppressing deterioration in quality.

FIG. 1 is a block diagram showing the configuration of a wiring accessory according to one embodiment of the present disclosure. FIG. 2A is an external perspective view showing an example of use of the same wiring device, with the opening/closing portion being in a conductive state. FIG. 2B is an external perspective view showing an example of use of the wiring device as described above, with the opening/closing portion being in a blocked state. FIG. 3 is an exploded perspective view of the wiring device same as the above. FIG. 4A is a front view of the same wiring device with an outer cover and an inner cover removed. FIG. 4B is a rear view of the wiring device with the outer cover and the inner cover removed. FIG. 5A is a schematic diagram corresponding to a cross section taken along the line X1-X1 in FIG. 4A, showing the configuration of the essential parts of the wiring device. FIG. 5B is a schematic diagram corresponding to a cross section taken along line X2-X2 in FIG. 4B, showing the configuration of the essential parts of the same wiring device. FIG. 6 is a diagram for explaining the first temperature threshold to the third temperature threshold in the wiring device of the same. FIG. 7A is a graph for explaining a second mode in the wiring device; FIG. 7B is a schematic diagram of a heat source that supplies heat to the same wiring device. FIG. 8 : is a graph for demonstrating the 2nd mode in the modification 1 of the wiring accessories same as the above. 9A and 9B are graphs for explaining the second mode in Modification 2 of the wiring device same as the above.

(1) Overview Each drawing described in the following embodiments is a schematic drawing, and the ratio of the size and thickness of each component in each drawing does not necessarily reflect the actual dimensional ratio. Not necessarily.

A wiring accessory 1 according to the present embodiment includes, as shown in FIG. The temperature detection unit 5 detects the temperature corresponding to the electric power supply line L<b>1 inside the instrument body 4 .

Here, as an example, it is assumed that the wiring device 1 is an outlet (see FIGS. 1 to 5B). The wiring accessory 1 is an outlet to which a plug 91 (see FIG. 5A) of a load device is connected to supply power to the load device. However, if the wiring device 1 referred to in the present disclosure can serve as a port for extracting power from a power source such as a commercial power source, it can be used in addition to an outlet, for example, a table tap, a hook ceiling, a switch device, and a relay device. , and a breaker. In short, the feedline L1 may be, for example, a feedline within a table tap.

When the wiring device 1 is an outlet, the "power supply line L1" is connected to the terminal member 2 to which the core wire 921 (see FIG. 5B) of the power supply line 92 is connected, and the plug blade 911 (see FIG. 5A) of the plug 91. It becomes an electric path from the terminal member 2 to the connection member 3 including the connection member 3 (blade receiver) connected. For example, in the case of a breaker, the feed line L1 is an electric line from a first terminal to a second terminal including a first terminal to which a first wire is connected and a second terminal to which a second wire is connected.

Further, the "temperature corresponding to the power supply line L1" is, for example, the temperature of the terminal member 2, the temperature of the connection member 3, or the temperature of the conductor portion (for example, the lead plate 30, etc.) connecting the terminal member 2 to the connection member 3. good. Also, the "temperature corresponding to the power supply line L1" may be the "surrounding temperature" of the terminal member 2, the connection member 3, the conductor portion, etc., and the portion (air layer) that receives dominant heat from the power supply line L1 due to thermal conduction. It may also be the temperature of the thermally coupled sites (including For example, it may be the temperature of the space between the terminal member 2 and the fixture main body 4 or the temperature of the inner wall surface of the fixture main body 4 around the terminal member 2 . Hereinafter, the location where the temperature is detected may be referred to as a "detection point".

Below, as an example, the wiring device 1 includes a plurality of temperature detection units 5, that is, a pair of first temperature detection units 51 that detect the temperature corresponding to the terminal member 2, and a pair of temperature detection units 51 that detect the temperature corresponding to the connection member 3. and the second temperature detection unit 52 of the above. However, the number of temperature detection units 5 is not particularly limited, and may be one. In FIG. 1, one first temperature detection unit 51 and one second temperature detection unit 52 are illustrated.

The control unit 7 performs determination based on the temperature detected by the temperature detection unit 5, and performs at least one of cutoff of the power supply line L1 and notification regarding the temperature according to the result of the determination. In the following, as an example, it is assumed that the control unit 7 performs both cutoff of the power supply line L1 and notification regarding temperature.

Here, the control unit 7 has, as operation modes, a first mode in which the determination is made based on a first algorithm, and a second mode in which the determination is made based on a second algorithm different from the first algorithm. The control unit 7 switches from the first mode to the second mode according to a predetermined operation.

Here, as an example, the first mode corresponds to a normal operation mode that is assumed to be applied when the user actually uses the wiring device 1 at the installation site. On the other hand, the second mode is an inspection operation that is assumed to be applied when an inspector inspects the wiring device 1 (confirming the operation of the temperature detection unit 5) when the wiring device 1 is shipped after manufacturing. Corresponds to mode. However, the second mode is not always applied to the inspection at the time of shipping after the wiring accessories 1 are manufactured. The second mode may be applied at the time of inspection at the installation site by a builder or a regular inspector (or a user).

According to this configuration, the mode is switched from the first mode to the second mode according to a predetermined operation, and the determination is performed based on the second algorithm different from the first algorithm in the first mode. Therefore, for example, compared with the case where the operation check is performed in the first mode, it is possible to improve the easiness of the operation check regarding the temperature detection performance while suppressing the deterioration of the quality of the wiring accessory 1 .

(2) Details Next, the wiring device 1 (outlet) will be described in more detail with reference to FIGS. 1 to 7B.

(2.1) Overall Configuration As described above, the wiring accessory 1 (outlet) according to the present embodiment is an outlet to which the plug 91 (see FIG. 5A) of the load equipment is connected and which supplies power to the load equipment. The wiring accessories 1 are installed, for example, in residential facilities such as detached houses or collective housing, or in non-residential facilities such as offices, shops, schools, nursing care facilities, and the like. The wiring accessories 1 are installed, for example, on a construction surface 100 (see FIG. 2A) such as a wall surface, a ceiling surface, and a floor surface of a facility (building).

As shown in FIG. 1, the wiring device 1 includes, in addition to the above-described device main body 4 (housing), a plurality of temperature detection units 5, and a control unit 7, an opening/closing unit M1 that cuts off the power supply line L1. , and more. The wiring device 1 further includes a terminal member 2 , a connection member 3 (blade receiver), an operating member 81 (operating lever), a display section 82 , a buzzer 83 and a switch 84 . Hereinafter, for convenience of explanation, the terminal member 2 and the connecting member 3 (blade receiver) may be collectively referred to as "conductor Z1".

Also, here, a plurality of temperature detection units 5, a control unit 7, and an opening/closing unit M1 constitute a detection system M10 (see FIG. 1). The detection system M10 will be described in detail together with the conductor Z1 in the section "(2.2) Detection system" below.

2A and 2B are perspective views of the wiring accessories 1 attached to the construction surface 100. FIG. In this embodiment, the wiring device 1 is an embedded wiring device that is attached to a mounting frame of a large-sized continuous wiring device standardized by Japanese Industrial Standards. Specifically, the wiring accessories 1 are attached to the construction surface 100 via an attachment frame. Here, the mounting frame is fixed to the construction surface 100 via an embedded box or directly. That is, by fixing the attachment frame to the construction surface 100, the wiring accessory 1 is attached to the construction surface 100 via the attachment frame. A decorative plate 101 is attached to the mounting frame, and as shown in FIGS. 2A and 2B , the wiring device 1 is exposed from the inside of the decorative plate 101 . Here, the attachment frame may be separate from the device body portion 4 of the wiring device 1 or may be integrated with the device body portion 4 . In the present embodiment, a case where the wiring device 1 is for indoor use, that is, a case where the construction surface 100 is the inner wall surface of a building (facility) will be described, but the wiring device 1 is not limited to this example and is for outdoor use. good too.

In the following description, the direction perpendicular to (perpendicular to) the horizontal plane in the state where the wiring device 1 is attached to the inner wall surface of the building, which is the construction surface 100, is defined as the “vertical direction”, and the wiring device 1 is viewed from the front. The downward direction (vertical direction) will be described as “downward”. Also, the direction perpendicular to the vertical direction and parallel to the construction surface 100 is defined as the "left-right direction", and the right direction as viewed from the front of the wiring device 1 is defined as the "right direction", and the left direction is defined as the "left direction". Further, the direction orthogonal to both the vertical direction and the horizontal direction, that is, the direction orthogonal to the construction surface 100 will be referred to as the "front-rear direction", and the back side of the construction surface 100 (wall back side) will be described as the "rear". However, these directions are not intended to limit the direction of use of the wiring accessory 1 . For example, when the wiring device 1 is attached to a floor surface instead of a wall surface, the "front-rear direction" is a direction perpendicular to the horizontal plane, and the "vertical direction" and "left-right direction" are directions parallel to the horizontal plane. Also, even when the wiring device 1 is attached to the wall surface, the "vertical direction" is parallel to the horizontal plane (i.e., sideways), and the "horizontal direction" is parallel to the horizontal plane. vertical direction.

Moreover, in this embodiment, as the wiring device 1, a two-outlet type outlet to which two plugs 91 can be connected at the same time is exemplified. That is, wiring accessory 1 has two connection ports 11 corresponding to two plugs 91 . The two connection ports 11 are each configured to be connectable with one plug 91, and are arranged side by side along the up-down direction (vertical direction) on the one surface 4A (front surface) of the instrument main body 4. In other words, the device main body 4 has, on its one surface 4A, a connection port 11 that faces the connection member 3 and into which the plug 91 is inserted. Of the two connection ports 11, one (lower) connection port 11 is an outlet with a two-pole grounding electrode for 100V AC, and the other (upper) connection port 11 is an outlet without a grounding electrode for 100V AC. 2-prong outlet.

In this embodiment, the wiring accessory 1 includes a pair of terminal members 2 having opposite polarities so as to correspond to the two-polar plug 91 . That is, one terminal member 2 of the pair of terminal members 2 is connected to the L-pole (HOT) side feeder line 92 , and the other terminal member 2 is connected to the N-pole (COLD) side feeder line 92 . be. Similarly, the wiring device 1 is provided with a pair of connection members 3 having opposite polarities for each connection port 11, and is provided with two pairs (four pieces) of connection members 3 in total. Here, two connecting members 3 having the same polarity are connected by a lead plate 30 (see FIG. 3). Furthermore, the connection member 3 and the terminal member 2, which have the same polarity, are electrically connected via the opening/closing portion M1.

The wiring device 1 includes a device main body 4 and internal components such as a terminal member 2 and a connecting member 3 that are housed or held in the device main body 4 . The device main body 4 has an outer body 41, an outer cover 42, an inner cover 43, an inner block 44, and a terminal block 45, as shown in FIG. The outer body 41, the outer cover 42, the inner cover 43, the inner block 44, and the terminal block 45 are combined to form the instrument main body 4. As shown in FIG. The instrument main body 4 is made of a synthetic resin having electrical insulation.

The outer body 41 is formed in a box shape with an open front surface. The opening surface (front surface) of the outer body 41 has a rectangular shape whose vertical dimension is longer than its horizontal dimension. The inner block 44 is accommodated in the outer body 41 together with other internal parts (the terminal member 2, the opening/closing part M1, etc.) while holding the connection member 3 . An inner cover 43 is attached to the front surface of the outer body 41 . As a result, internal parts including the connection member 3 held by the inner block 44 are housed between the outer body 41 and the inner cover 43 . The outer cover 42 is attached to the front surface of the inner cover 43 . Thereby, the connection member 3 is accommodated between the inner block 44 and the outer cover 42 . Here, an opening window 431 penetrating in the front-rear direction is formed in a portion of the inner cover 43 corresponding to the inner block 44 . Therefore, the front surface of the inner block 44 holding the connection member 3 is covered with the outer cover 42, and the front surface of the inner block 44 is exposed forward through the opening window 431 when the outer cover 42 is removed. The terminal block 45 is accommodated in the outer body 41 together with other internal parts while holding the terminal member 2 .

That is, the inner block 44 and the outer cover 42 constitute a holding member that holds the connecting member 3 . The terminal block 45 constitutes a holding member that holds the terminal member 2 . In other words, the wiring accessory 1 further includes a holding member that holds at least one of the terminal member 2 and the connection member 3 .

The outer cover 42 is further divided into a plurality of members (for example, three members of the first portion 42A, the second portion 42B, and the earth lid 113). good. Here, the first portion 42A covering the inner block 44 and the inner block 44 of the outer cover 42 are made of urea resin, for example. The second portion 42B is a substantially U-shaped portion formed so as to surround the first portion 42A and the earth lid 113. As shown in FIG.

A first portion 42A of the outer cover 42 covering the inner block 44 is formed with the two connection ports 11 described above. One (upper) connection port 11 of the two connection ports 11 has a pair of insertion holes 111 into which a pair of blades 911 (see FIG. 5A) of the plug 91 are inserted. The other (lower) connection port 11 of the two connection ports 11 has, in addition to a pair of insertion holes 111, a ground insertion hole 112 into which a ground pin of a plug with a ground pole is inserted. A lid 113 is provided. Inside the device main body 4 , the connecting member 3 is arranged at a position corresponding to each insertion hole 111 , the first grounding member 114 is arranged at a position corresponding to the grounding insertion hole 112 , and corresponds to the grounding lid 113 . A second grounding member 115 is arranged at the position. The first ground member 114 is a spring member to which the ground pin of the plug with ground electrode is connected. The second grounding member 115 is a screw terminal to which the grounding wire of the electrical equipment is connected. The ground wire can be attached/detached to/from the second ground member 115 with the ground cover 113 open.

Further, in the space between the outer body 41 and the inner cover 43 and to the left of the inner block 44, the opening/closing part M1 and the substrate 85 are accommodated. The substrate 85 is arranged above the opening/closing portion M1. A first indicator lamp 821 and a second indicator lamp 822 constituting the display section 82 and a switch 84 are mounted on the substrate 85 . As an example, the first indicator lamp 821 and the second indicator lamp 822 are LEDs (Light Emitting Diodes) with different emission colors, and the switch 84 is a push button switch. In this way, the opening/closing part M1, the display part 82 and the switch 84 are housed inside the instrument body part 4 (the outer body 41 and the inner cover 43). However, the inner cover 43 has a translucent portion 432 and a cantilever so that the light of the display portion 82 can be seen from the front of the instrument body 4 and the switch 84 can be pushed from the front of the instrument body 4 . 433 are formed. That is, the light of the display portion 82 can be viewed from the front of the instrument main body 4 through the translucent portion 432 , and the switch 84 can be pushed from the front of the instrument main body 4 via the cantilever 433 . In FIGS. 2A and 2B, for the sake of convenience, the display section 82 and the display section 82 (the first display lamp 821 and the second display lamp 822) and the switch 84 on the one surface 4A (front surface) of the instrument main body 4 are provided at positions corresponding to the display section 82 and the switch 84, respectively. The reference numeral of the switch 84 is attached.

(2.2) Detection system (2.2.1) Overall configuration Hereinafter, the detection system M10 (the temperature detection unit 5, the control unit 7, and the switching unit M1) and the conductor Z1 (the terminal member 2 and the connection member 3) explain in detail.

First, the conductor Z1 (connection member 3 and terminal member 2) will be described with reference to FIGS. 4A to 5B.

Two pairs (four pieces) of connection members 3 are held by an inner block 44 as shown in FIGS. 4A and 5A. Here, the two pairs of connection members 3 are arranged at positions respectively corresponding to the two pairs of insertion holes 111 formed in the outer cover 42, specifically at the four corners of the inner block 44 when viewed from the front. Furthermore, as described above, the two connection members 3 having the same polarity, that is, the two connection members 3 arranged in the vertical direction are connected by the lead plate 30 . Each of the pair of lead plates 30 having opposite polarities is formed in a strip shape that is longer in the vertical direction than in the horizontal direction. Here, the two connecting members 3 and the lead plate 30 having the same polarity are integrally formed from one metal plate. In FIGS. 4A and 5A, the metal plates forming the connection member 3 and the lead plate 30 are hatched (dotted).

Each connecting member 3 is a blade receiving member into which the plug blade 911 of the plug 91 is inserted when the plug 91 is connected. Each connecting member 3 is made of a conductive and elastic metal such as copper or a copper alloy. Each connecting member 3 has a pair of blade receiving pieces 31 facing each other in the left-right direction. Each connecting member 3 is electrically connected to the blade 911 and mechanically holds the blade 911 with the blade 911 sandwiched between the pair of blade receiving pieces 31 .

A pair of terminal members 2 are held by a terminal block 45 as shown in FIGS. 4B and 5B. Here, the pair of terminal members 2 are arranged at positions respectively corresponding to the pair of terminal holes 121 formed in the rear surface of the terminal block 45 . Each terminal member 2 is an insertion-type quick-connect terminal to which the power supply line 92 is connected by inserting the core wire 921 of the power supply line 92 . Specifically, each terminal member 2 has a terminal plate 21 and a locking spring 22, as shown in FIG. 5B. The terminal plate 21 is made of a conductive metal such as copper or a copper alloy. The locking spring 22 is made of elastic metal such as stainless steel. Each terminal member 2 is exposed from a corresponding terminal hole 121 in a pair of terminal holes 121 opened on the surface (back surface 4B) opposite to the one surface 4A (front surface) of the instrument main body 4 . When the power supply line 92 is inserted into the corresponding terminal hole 121 , each terminal member 2 holds the power supply line 92 with the core wire 921 of the power supply line 92 sandwiched between the terminal plate 21 and the locking spring 22 . and mechanically holds the feeder line 92 .

Further, the terminal block 45 holds a ground terminal 116 (see FIG. 4B) for connecting a ground wire. The ground terminal 116 is an insertion type quick-connect terminal similar to the terminal member 2 and is arranged at a position corresponding to the ground terminal hole 122 formed in the rear surface of the terminal block 45 . The grounding terminal 116 is electrically connected to the first grounding member 114 and the second grounding member 115 inside the instrument main body 4 .

Next, the plurality of temperature detectors 5 (first temperature detector 51 and second temperature detector 52) of the detection system M10 will be described with reference to FIGS. 1, 5A, and 5B.

A plurality of temperature detection units 5 are housed in the instrument main body 4 and detect temperatures corresponding to power supply lines L<b>1 within the instrument main body 4 . The power supply line L1 is an electric line from the terminal member 2 to the connection member 3, including the terminal member 2 and the connection member 3, as described above.

Here, as shown in FIG. 1, the first temperature detection unit 51 detects the temperature corresponding to the terminal member 2 to which the power supply line 92 is connected in the power supply line L1. The second temperature detection unit 52 detects the temperature corresponding to the connection member 3 (blade receiver) to which the plug 91 to which power is supplied in the power supply line L1 is connected. The first temperature detection section 51 includes one or more temperature sensors (sensor elements 510), and the second temperature detection section 52 includes one or more temperature sensors (sensor elements 520). Sensor element 510 is thermally coupled to terminal member 2 . Sensor element 520 is thermally coupled to connecting member 3 . Sensor element 510 and sensor element 520 are implemented by, for example, thermistors, thermocouples, or thermopiles.

The sensor element 510 of the first temperature detection section 51 is mounted on a sensor substrate 511 as shown in FIG. 5B. This is achieved by interposing a heat transfer member 512 (heat transfer sheet) having heat transfer and electrical insulation properties between the terminal plate 21 of the terminal member 2 and the first temperature detecting portion 51 . In other words, the sensor element 510 of the first temperature detection portion 51 is in contact with the terminal member 2 via the heat transfer member 512 inside the device body portion 4 . Here, a pair of first temperature detectors 51 are provided so as to correspond to a pair of terminal members 2 having opposite polarities. A pair of heat transfer members 512 are also provided. Each first temperature detector 51 detects the temperature of the terminal member 2 via the corresponding heat transfer member 512 .

Further, in the present embodiment, the sensor element 510, the heat transfer member 512, and the terminal member 2 of the first temperature detection section 51 are arranged in the first temperature detection section 51 when the sensor element 510 is viewed from the receiving surface U1 (to be described later). , the heat transfer member 512 and the terminal member 2 are arranged in this order. Specifically, on the one-dot chain line X3 in FIG. , at least a portion of the terminal member 2 is arranged.

As shown in FIG. 5A, the sensor element 520 of the second temperature detection unit 52 is thermally coupled to the lead plate 30 on the back side of the lead plate 30 connecting the two connection members 3 to each other. are placed. The thermal coupling between the sensor element 520 of the second temperature detecting section 52 and the lead plate 30 is realized by directly fixing the sensor element 520 to the lead plate 30 with a clip or the like. Here, a pair of second temperature detectors 52 are provided so as to correspond to a pair of lead plates 30 having opposite polarities. Each second temperature detector 52 detects the temperature of the connection member 3 via the corresponding lead plate 30 .

Each temperature detector 5 outputs a detection signal corresponding to the detected temperature to the controller 7 . The detection signal may be a signal (electrical signal) that conveys information according to temperature with a specific code. For example, it is a signal whose electric quantity such as resistance value, voltage value or current value changes according to temperature. . Each temperature detection unit 5 may further have a processing circuit that processes the output of the corresponding sensor element (510 or 520) and outputs a detection signal.

The temperature detection points are not limited to the locations described above. For example, the detection point of the temperature detected by the second temperature detection unit 52 is the lead plate 30 as described above. However, a portion of the holding member (the inner block 44 and the outer cover 42) that holds the connecting member 3 and the lead plate 30, which is close to the portion that contacts the connecting member 3 and the lead plate 30, may be used as the detection point. A gap (space) may be interposed between the detection point and the sensor element 520 . In short, the number of detection points may be one or more, and the positions thereof are not limited as long as the temperature corresponds to the power supply line L1.

(2.2.2) Control Unit Next, the control unit 7 of the detection system M10 will be described.

The control unit 7 is housed in the instrument main body 4, and is mounted on a control board arranged behind the inner block 44, for example. The buzzer 83 is similarly housed in the instrument main body 4 and mounted on, for example, the control board. The control unit 7 is electrically connected to the opening/closing unit M<b>1 , the display unit 82 , the buzzer 83 , the switch 84 and the temperature detection unit 5 . The control unit 7 controls at least the opening/closing unit M1, the display unit 82, and the buzzer 83. FIG.

The control unit 7 has, for example, a computer system having a processor and memory. The computer system functions as the control unit 7 by the processor executing the program stored in the memory. The program executed by the processor is recorded in advance in the memory of the computer system here, but may be recorded in a recording medium such as a memory card and provided, or may be provided through an electric communication line such as the Internet. .

The control unit 7 is configured to perform determination based on the temperature detected by the temperature detection unit 5 (hereinafter referred to as temperature determination). The control unit 7 is configured to perform at least one of cutoff of the power supply line L1 (hereinafter simply referred to as cutoff) and notification regarding the temperature (hereinafter simply referred to as notification) according to the result of the temperature determination. there is Here, as an example, the control unit 7 performs both blocking and notification when an abnormal temperature rise is detected. A specific configuration of the control unit 7 will be described below.

The control unit 7 has, as operation modes, a first mode in which temperature determination is performed based on a first algorithm, and a second mode in which temperature determination is performed based on a second algorithm different from the first algorithm. there is Then, the control unit 7 switches from the first mode to the second mode, for example, in response to a predetermined operation (for example, a long press operation, etc.) on the switch 84 . After the operation mode is switched from the first mode to the second mode, the control unit 7 switches the second mode to the first mode after a predetermined time TM1 (see FIG. 7A) has passed. As described above, as an example, the first mode corresponds to the normal operating mode. On the other hand, the second mode corresponds to an operation mode for inspection.

The control unit 7 has a notification unit M2, a first determination unit 73, and a second determination unit 74, as shown in FIG. In other words, the control unit 7 has a function as the notification unit M2, a function as the first determination unit 73, and a function as the second determination unit 74. The first determination unit 73 is configured to perform determination processing based on a first algorithm in the first mode. The second determination unit 74 is configured to perform determination processing based on the second algorithm in the second mode. The first determination section 73 and the second determination section 74 may be configured as one determination section.

When wiring accessories 1 are in a specific state, notification part M2 notifies that. The "specific state" referred to here differs depending on whether the control unit 7 is operating in the first mode or in the second mode. When the control unit 7 is operating in the first mode, the specific state is a state in which an abnormal temperature rise occurs. When the control unit 7 is operating in the second mode, the specific state is a state in which the operation of the wiring accessory 1 (especially the temperature detection unit 5) is normal.

The notification unit M2 has a notification unit 71 and a state presentation unit 72, as shown in FIG. When the control unit 7 detects that the wiring accessory 1 is in a specific state based on the temperatures detected by the plurality of temperature detection units 5, the control unit 7 notifies the fact through the notification unit M2.

In both the first mode and the second mode, the control section 7 is configured to acquire information (data) regarding the temperature detected by each temperature detection section 5 at a common predetermined sampling period. The predetermined sampling period is, for example, once/second. However, the sampling period may differ between the first mode and the second mode.

(2.2.3) First Mode The following description will focus on the first mode, which corresponds to the normal operation mode. The first algorithm includes determination of comparing the temperature detected by each temperature detection unit 5 with a first temperature threshold Tth1 (see FIG. 6). The first temperature threshold Tth1 is, for example, 90°C. During the first mode, the first determination unit 73 determines whether the temperatures detected by the plurality of temperature detection units 5 have exceeded the first temperature threshold Tth1. If the first determination unit 73 determines that even one of the plurality of temperatures detected by the plurality of temperature detection units 5 has exceeded the first temperature threshold value Tth1, an abnormal temperature rise has occurred. Determine that the wiring device 1 is in an abnormal state. The first determination unit 73 may determine that the wiring accessory 1 is in an abnormal state when the instantaneous value of the temperature of the temperature detection unit 5 exceeds the first temperature threshold value Tth1. Alternatively, the first determination unit 73 may determine the moving average value of the temperature, and determine that the wiring accessory 1 is in an abnormal state when the moving average value exceeds the first temperature threshold value Tth1.

When the control unit 7 determines that the wiring device 1 is in an abnormal state, the control unit 7 causes the opening/closing unit M1 to cut off the power supply line L1 from the terminal member 2 to the connection member 3 . In other words, when the first condition that "in the first mode, it is determined that an abnormal temperature rise has occurred in the instrument main body 4", the control unit 7 causes the power supply line L1 to be connected to the opening/closing part M1. Execute a shutdown. The control unit 7 outputs a drive signal to the opening/closing part M1, and controls the opening/closing part M1 to switch from the conductive state to the cut-off state. Also, the notification unit 71 of the notification unit M2 notifies the determination result (abnormal state). That is, the notification unit 71 notifies the user that an abnormal temperature rise has been detected through the buzzer 83 and the display unit 82 .

In this embodiment, as an example, the notification by the notification unit 71 is realized by outputting an abnormality warning sound from the buzzer 83 and displaying “abnormality” on the display unit 82 . That is, the control unit 7 realizes notification by the notification unit 71 by controlling the buzzer 83 and the display unit 82 . The state presentation unit 72 of the notification unit M2 presents whether the opening/closing unit M1 is in the conductive state or the cut-off state. In this embodiment, as an example, presentation by the state presentation unit 72 is realized by outputting an abnormality warning sound from the buzzer 83 and displaying “abnormality” on the display unit 82 . In other words, the control unit 7 realizes presentation by the state presentation unit 72 by controlling the buzzer 83 and the display unit 82 .

A switch 84 is operated to stop the sound output of the buzzer 83 . In other words, when the switch 84 is pushed while the buzzer 83 is outputting an abnormality warning sound, the control unit 7 controls the buzzer 83 so as to stop the buzzer 83 . The switch 84 is also used as a test switch, and is also used when forcibly switching the opening/closing portion M1 from the conductive state to the cutoff state.

The opening/closing portion M1 is electrically connected between the terminal member 2 and the connection member 3 . The opening/closing part M1 is a device that switches between two states, a conducting state and a breaking state. That is, if the opening/closing portion M1 is in a conductive state, the terminal member 2 and the connection member 3 are electrically connected through the opening/closing portion M1, and if the opening/closing portion M1 is in a disconnected state, the terminal member 2 and the connection member 3 are connected. is electrically blocked (insulated) by the opening/closing portion M1. That is, the electric circuit between the terminal member 2 and the connection member 3 is cut off by switching the opening/closing portion M1 to the cut-off state. The wiring accessory 1 of the present embodiment includes a pair of terminal members 2 having opposite polarities, and the opening/closing portion M1 is electrically connected to both of the pair of terminal members 2 . Therefore, if the opening/closing portion M1 is in the disconnected state, all of the two pairs (four pieces) of the connecting members 3 are electrically disconnected from the terminal member 2. As shown in FIG.

Specifically, the opening/closing part M1 has a pair of contact devices having opposite polarities and an electromagnetic release device. Each of the pair of contact devices has a fixed contact and a movable contact. The movable contact moves between a closed position in contact with the fixed contact and an open position away from the fixed contact. A terminal member 2 is electrically connected to the fixed contact, and a connecting member 3 is electrically connected to the movable contact. More specifically, the movable contact is provided on the movable contact, and the movable contact and the connection member 3 are electrically connected by connecting the movable contact to the lead plate 30 with a braided wire.

The opening/closing part M1 having such a configuration is in a conductive state in which the terminal member 2 and the connecting member 3 are electrically connected when the movable contact is positioned at the closed position in a steady state. On the other hand, when the opening/closing part M1 receives a drive signal from the control part 7, the opening/closing part M1 operates the electromagnetic release device to drive the movable contact and move the movable contact to the open position, thereby opening the terminal member 2 and the connecting member 3. switch to a cut-off state that electrically cuts off between In this manner, the opening/closing portion M1 is switched from the conductive state to the cut-off state by the drive signal from the control portion 7 .

An operating member 81 is mechanically coupled to the opening/closing portion M1. The operation member 81 is a lever-type handle rotatable around a rotation shaft. A first operation hole 434 and a second operation hole 421 are formed in the inner cover 43 and the outer cover 42, respectively, so that the operation member 81 can be operated from the front of the instrument main body 4. As shown in FIG. In other words, the operation member 81 is exposed to the front of the instrument body 4 through the first operation hole 434 and the second operation hole 421 and can be operated from the front of the instrument body 4 .

The operating member 81 is displaced with respect to the instrument main body 4 in response to interruption of the power supply line L1. Specifically, the operating member 81 rotates in conjunction with the opening/closing portion M1, and moves between an ON position (see FIG. 2A) and an OFF position (see FIG. 2B). The ON position is a position corresponding to the conductive state of the opening/closing portion M1, and the OFF position is a position corresponding to the blocking state of the opening/closing portion M1. In other words, if the opening/closing portion M1 is in a conductive state, the operation member 81 is positioned at the ON position as shown in FIG. 2A. When the operating member 81 is at the ON position, the front surface of the operating member 81 is substantially flush with the one surface 4A (front surface) of the instrument main body 4 . On the other hand, when the opening/closing portion M1 switches from the conducting state to the blocking state, the operating member 81 rotates and the tip portion of the operating member 81 moves forward (front side), and the operating member 81 is turned off as shown in FIG. 2B. Move to position. When the operating member 81 is at the OFF position, the operating member 81 protrudes forward from the one surface 4A of the instrument main body 4. As shown in FIG.

In this way, since the operating member 81 and the opening/closing portion M1 are interlocked, when the opening/closing portion M1 receives the driving signal from the control portion 7 and switches from the conductive state to the cut-off state, the operating member 81 is Move from the on position to the off position. Conversely, when the operating member 81 moves from the OFF position to the ON position, the opening/closing portion M1 switches from the blocking state to the conducting state. Therefore, when the user operates the operating member 81 in the OFF position to move it to the ON position, the opening/closing portion M1 in the cut-off state can be switched to the conductive state. An operation of moving the operating member 81 from the OFF position to the ON position is called a recovery operation.

In the present embodiment, the opening/closing portion M1 changes from the conductive state to the cutoff state not only when it receives a drive signal from the control portion 7, but also when the operation member 81 is moved from the ON position to the OFF position. switch. Therefore, the user can manually switch between the conduction state and the interruption state of the opening/closing portion M1 by operating the operation member 81 . In other words, the opening/closing part M1 functions as a switching device that turns on and off according to the operation of the operation member 81. As shown in FIG.

(2.2.4) Second Mode Hereinafter, the description will focus on the second mode corresponding to the operation mode for inspection. The second algorithm includes determination of comparing the temperature detected by each temperature detector 5 with a second temperature threshold Tth2 (see FIG. 6). The second temperature threshold Tth2 is lower than the first temperature threshold Tth1. Here, as an example, the second temperature threshold Tth2 is a threshold higher than normal temperature (20° C.±15° C.: 5 to 35° C.). Here, the second temperature threshold Tth2 is assumed to be 40° C., for example.

The second algorithm of the present embodiment includes determination of whether or not the temperature detected by each temperature detector 5 is within a predetermined range R1 (see FIG. 6). In this case, the lower limit value DW1 of the predetermined range R1 is the second temperature threshold value Tth2, and the upper limit value UP1 of the predetermined range R1 is the second temperature threshold value set between the first temperature threshold value Tth1 and the second temperature threshold value Tth2. 3 is the temperature threshold Tth3. The third temperature threshold Tth3 is set to 60° C., for example.

As described above, the control unit 7 switches from the first mode to the second mode in response to a predetermined operation on the switch 84 (for example, a long press operation for 5 seconds or more).

When the control unit 7 switches from the first mode to the second mode, the control unit 7 may immediately start the temperature determination based on the second algorithm. , to start the temperature determination (see FIG. 7A). The specified time TM2 is, for example, 60 seconds, but is not particularly limited.

The specific timing t<b>0 is the timing at which heat having a temperature higher than at least room temperature starts to be supplied toward the appliance main body 4 . The supply of heat will be described later. The specific timing t0 may be determined appropriately by the inspector. Here, the time when the inspector operates the switch 84 (for example, short press operation) is assumed.

During the second mode, after starting the temperature determination, the second determination unit 74 determines whether the temperatures detected by the plurality of temperature detection units 5 are within the predetermined range R1. Specifically, the second determination unit 74 determines whether or not the temperature is within a predetermined range R1 during a determination period T1 (see FIG. 7A) from time t1 when the specified time TM2 has elapsed to time t2. determine whether The determination period T1 is, for example, 5 seconds, but is not particularly limited. As in the first mode, the second determination unit 74 may use the instantaneous value of the temperature of the temperature detection unit 5 for determination, or may use the moving average value of the temperature. The second determination unit 74 determines that the operation of the temperature detection unit 5 is normal if the temperature is within a predetermined range R1 within the determination period T1. The predetermined range R1 is a range corresponding to the temperature to be set by the heat source H1 (see FIG. 7B) used in the inspection method described later. If the temperature detected by the temperature detection unit 5 is within this range, This is an appropriate range in which it is determined that the temperature detection performance of the temperature detection unit 5 is normal. Here, the second determination unit 74 determines that the operation of the temperature detection unit 5 is abnormal when the temperature (momentarily) deviates from the predetermined range R1 even once within the determination period T1.

When the control unit 7 determines that the operation of the temperature detection unit 5 is normal, the control unit 7 causes the switching unit M1 to cut off the power supply line L1 between the terminal member 2 and the connection member 3 . In other words, the control unit 7 causes the opening/closing unit M1 to cut off the power supply line L1 when the second condition that "in the second mode, it is determined that the operation of the temperature detection unit 5 is normal" is satisfied. . In other words, including the first condition in the first mode, the control unit 7 causes the switching unit M1 to cut off the power supply line L1 when either the first condition or the second condition is satisfied.

The control unit 7 outputs a drive signal to the opening/closing part M1, and controls the opening/closing part M1 to switch from the conductive state to the cut-off state. As a result, the operating member 81 (operating lever) is displaced from the state shown in FIG. 2A to the state shown in FIG. 2B. By visually confirming the displacement of the operation member 81, the inspector can know that the operation of the temperature detecting section 5 is normal. That is, if the operation member 81 is displaced, it is determined that the operation of the temperature detection unit 5 is normal, and if the operation member 81 is not displaced, it is determined that the operation of the temperature detection unit 5 is abnormal.

Further, the notification unit 71 of the notification unit M2 may notify the determination result (whether the operation of the temperature detection unit 5 is normal or abnormal). That is, the notification unit 71 may notify the examiner of the determination result through the buzzer 83 and the display unit 82 . In particular, when the operation of the temperature detection unit 5 is abnormal, the open/close unit M1 is maintained in a conducting state, so it may be difficult for the inspector to make a determination based only on the displacement of the operation member 81. FIG. Therefore, it is desirable that the notification unit 71 also reports the determination result.

By the way, in this embodiment, a plurality of temperature detectors 5 are provided. Therefore, here, the second condition is that it is determined that all the plurality of temperature detection units 5 operate normally in the second mode. In other words, if even one temperature detection unit 5 has an abnormality in its operation, the control unit 7 does not cause the switching unit M1 to cut off the power supply line L1. Therefore, even if there are a plurality of temperature detection units 5, if all the temperature detection units 5 operate normally, the inspector can visually check all the temperature detection units 5 because the operation member 81 is displaced. operation can be checked collectively. Further, if there is an abnormality in the operation of even one temperature detection unit 5, the notification unit 71 of the notification unit M2 notifies that the operation related to the temperature detection unit 5 is abnormal. It is preferable that the control unit 7 identifies the temperature detection unit 5 having an abnormality, and notifies information about the identified temperature detection unit 5 using the notification unit 71 of the notification unit M2.

(2.3) Inspection Method Next, an example of an inspection method for the wiring accessory 1 will be briefly described with reference to FIGS. 7A and 7B. Characteristics G1 and G2 in FIG. 7A each show an example of temperature characteristics detected by two certain temperature detection units 5 . Also, the procedure of the following inspection method is merely an example.

An inspector electrically connects an external power supply (commercial power supply, etc.) for inspection to the terminal member 2 of the wiring device 1 in order to obtain an operating power source for the control unit 7 of the wiring device 1 . Also, the inspector prepares a heat source H1 (FIG. 7B) such as a heater. The inspector presses and holds the switch 84 to switch the operation mode of the wiring device 1 from the first mode to the second mode. The time on the horizontal axis of FIG. 7A is zero when the second mode is switched. The control unit 7 of the wiring accessory 1 uses a built-in timer to start timing a predetermined time TM1.

Then, the inspector starts supplying heat from the heat source H1 to the one surface 4A (front surface) of the device main body 4 of the wiring device 1 . The heat from the heat source H1 is at least heat having a temperature higher than normal temperature, and is heat to the extent that the quality of the wiring accessory 1 is not deteriorated. The set temperature of the heat source H1 is, for example, 120° C., but since the temperature drops before the heat reaches the wiring device 1, the temperature actually detected by the wiring device 1 during normal operation is within the predetermined range R1. inside.

In this embodiment, one surface 4A of the appliance main body 4 is the receiving surface U1 exposed to heat. That is, the receiving surface U1 is a surface on which the connection port 11 to which the plug 91 is connected is provided. Heat from the heat source H<b>1 can effectively heat the connection member 3 through the connection port 11 . Further, the heat from the heat source H1 is also supplied to the projection area of the terminal member 2 on the reception surface U1.

The inspector briefly presses the switch 84 when starting to supply heat. When the wiring accessory 1 detects that the switch 84 is pressed for a short time during the second mode, the time point is taken as the specific timing t0 at which the heat supply is started. And the wiring accessories 1 will start temperature determination, if specified time TM2 (for example, 60 seconds) passes from specific timing t0.

At time t1 after the specified time TM2 has elapsed, the wiring device 1 blinks the display unit 82, for example, so as to notify the inspector that the temperature determination has started. The inspector stops the supply of heat from the heat source H1 at the timing of knowing the start of temperature determination.

The wiring accessory 1 determines whether or not the temperature detected by each temperature detector 5 falls within a predetermined range R1 during a determination period T1 (for example, 5 seconds). In the example of FIG. 7A, the temperature indicated by the characteristic G1 is within the predetermined range R1 during the determination period T1, so it is determined that the operation of the temperature detection unit 5 corresponding to the characteristic G1 is normal. On the other hand, the temperature indicated by the characteristic G2 exceeds the third temperature threshold Tth3 corresponding to the upper limit value UP1 of the predetermined range R1 during the determination period T1, and is outside the predetermined range R1. The operation of the detector 5 is determined to be abnormal. Even if the detected temperature is lower than the second temperature threshold value Tth2 corresponding to the lower limit value DW1 of the predetermined range R1 during the determination period T1, the wiring device 1 determines that the operation of the temperature detection unit 5 is abnormal. do.

Then, the inspector can know the determination result through the displacement of the operation member 81, the buzzer 83, and the display unit 82 due to the execution of blocking in the opening/closing part M1. In other words, the inspector determines whether the wiring device 1 to be inspected passes or fails from the state of the operation member 81 and the notification contents of the buzzer 83 and the display unit 82 . In the example of FIG. 7A, since there is an abnormality in the operation of the temperature detection section 5 corresponding to the characteristic G2, the opening/closing section M1 is not cut off. Therefore, the inspector can know that the temperature detection unit 5 has an abnormality through the state of the operation member 81 that is not displaced, the buzzer 83 and the display unit 82 .

After switching from the first mode to the second mode, the wiring accessory 1 switches the second mode to the first mode when a predetermined time TM1 elapses. That is, the operation mode for inspection is automatically terminated. Therefore, for example, it is possible to reduce the possibility that the wiring device 1 will be used in the installation site or the like in the second mode. Moreover, even if the user unintentionally and accidentally performs a predetermined operation on the switch 84, it is possible to reduce the possibility that the wiring accessory 1 will operate for a long time in the second mode. The predetermined time TM1 is, for example, several minutes, but is not particularly limited.

Thus, in this embodiment, the mode is switched from the first mode to the second mode according to a predetermined operation, and temperature determination is performed based on the second algorithm different from the first algorithm in the first mode. Therefore, compared to the case where the operation check (inspection) is performed in the first mode, for example, it is possible to improve the easiness of the operation check regarding the temperature detection performance while suppressing the deterioration of the quality.

The first algorithm also includes determining that the temperature is compared to a first temperature threshold Tth1, while the second algorithm includes determining that the temperature is compared to a second temperature threshold Tth2, and the second temperature threshold Tth2 is determined by comparing the temperature with a second temperature threshold Tth2. 1 lower than the temperature threshold Tth1. Therefore, for example, if the first mode corresponds to the normal operation mode when the wiring device 1 is used, switching to the second mode at the time of inspection can further suppress deterioration in the quality of the wiring device 1 caused by the inspection.

In particular, the wiring accessories 1 start the temperature determination after the specified time TM2 has passed from the specific timing t0. Therefore, under conditions where sufficient heat is supplied and the temperature detected by the temperature detection unit 5 rises, the possibility of making a temperature determination based on the second algorithm increases. reliability can be improved.

In addition, since the one surface 4A of the device main body 4 is the receiving surface U1 exposed to heat, it is possible to easily check the operation of the temperature detection performance using the connection port 11. FIG.

(2.4) Inspection of Heat Transfer Member By the way, the wiring device 1 of the present embodiment can inspect not only the operation of the temperature detecting section 5 but also the forgetting to attach the heat transfer member 512 . In other words, the second algorithm includes not only the temperature determination for operation inspection described above, but also the following determination for forgetting to attach.

Specifically, as described above, when the sensor element 510, the heat transfer member 512, and the terminal member 2 of the first temperature detection unit 51 are viewed from the reception surface U1, the first temperature detection unit 51, The heat transfer member 512 and the terminal member 2 are arranged in this order (see the dashed-dotted line X3 in FIG. 5B).

When the examiner starts supplying heat from the heat source H1 to the reception surface U1, the heat is transferred to the sensor element 510 through the outer cover 42, the inner cover 43, and the sensor substrate 511 as indicated by the arrows in FIG. 5B. will be transmitted to Here, since the heat transfer member 512 is arranged on the back side of the sensor element 510, the heat from the heat source H1 can be radiated through the heat transfer member 512, the terminal member 2, and the like. In other words, the characteristics of the temperature detected by the first temperature detector 51 are affected by heat dissipation in the heat transfer member 512 .

For example, when the inspector stops the supply of heat from the heat source H1 at the timing when he or she becomes aware of the start of temperature determination, the characteristic of the temperature detected by the first temperature detection unit 51 thereafter changes to that of the heat transfer member 512. It decreases gradually under the influence of heat dissipation at Therefore, the control unit 7 preliminarily stores a reference temperature value used for checking the presence or absence of the heat transfer member 512 in its own memory. The control unit 7 compares the temperature actually detected by the first temperature detection unit 51 with a reference value, and if the temperature is higher than the reference value, the heat transfer member 512 is not arranged in the instrument main body 4 ( Forgetting to install). The control unit 7 notifies the determination result regarding the presence or absence of the heat transfer member 512 through the buzzer 83 and the display unit 82 .

Therefore, based on the temperature detected by the temperature detection unit 5, the inspector can easily inspect whether or not the heat transfer member 512 is installed (whether or not the installation is forgotten).

(3) Modifications The embodiment described above is merely one of various embodiments of the present disclosure. The above-described embodiment can be modified in various ways according to design and the like, as long as the object of the present disclosure can be achieved. Moreover, the function similar to the wiring accessories 1 which concern on the said embodiment may be embodied by the non-temporary recording medium etc. which recorded the control method of the wiring accessories 1, a computer program, or a computer program.

Modifications of the above embodiment are listed below. Modifications described below can be applied in combination as appropriate. Below, the above embodiment may be referred to as a "basic example".

The control unit 7 of the wiring accessory 1 in the present disclosure includes a computer system. A computer system is mainly composed of a processor and a memory as hardware. The function as the control unit 7 of the wiring accessory 1 in the present disclosure is realized by the processor executing a program recorded in the memory of the computer system. The program may be recorded in advance in the memory of the computer system, may be provided through an electric communication line, or may be recorded in a non-temporary recording medium such as a computer system-readable memory card, optical disk, or hard disk drive. may be provided. A processor in a computer system consists of one or more electronic circuits, including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs). The integrated circuit such as IC or LSI referred to here is called differently depending on the degree of integration, and includes integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). In addition, a field-programmable gate array (FPGA) that is programmed after the LSI is manufactured, or a logic device capable of reconfiguring the bonding relationship inside the LSI or reconfiguring the circuit partitions inside the LSI may also be adopted as the processor. can be done. A plurality of electronic circuits may be integrated into one chip, or may be distributed over a plurality of chips. A plurality of chips may be integrated in one device, or may be distributed in a plurality of devices. A computer system, as used herein, includes a microcontroller having one or more processors and one or more memories. Accordingly, the microcontroller also consists of one or more electronic circuits including semiconductor integrated circuits or large scale integrated circuits.

In addition, it is not an essential configuration of the wiring device 1 that a plurality of functions of the wiring device 1 are integrated in one housing, and the components of the wiring device 1 are provided dispersedly in a plurality of housings. may be Furthermore, at least some functions of the wiring accessories 1, for example, some functions of the wiring accessories 1, may be realized by a cloud (cloud computing) or the like. On the contrary, like the basic example, a plurality of functions of wiring accessory 1 may be integrated in one housing.

(3.1) Modification 1
Hereinafter, this modified example (modified example 1) of the wiring accessory 1 will be described with reference to FIG. 8 . However, the same reference numerals are given to the components that are common to the wiring device 1 of the basic example, and the description thereof will be omitted as appropriate.

In the basic example, during the second mode, the second determination section 74 determines whether the temperature detected by each temperature detection section 5 is within a predetermined range R1. That is, in the basic example, the second algorithm includes determination as to whether or not the temperature detected by each temperature detection unit 5 is within the predetermined range R1.

In Modified Example 1, the second algorithm includes determining whether the temperature change from the first temperature to the second temperature is within a predetermined range R1. That is, the second determination section 74 of Modification 1 determines whether or not the change in temperature detected by each temperature detection section 5 is within the predetermined range R1.

The first temperature is the temperature detected by the temperature detector 5 at the first timing. The first timing is, for example, a specific timing t0 at which heat supply from the heat source H1 is started, but may be the timing of switching to the second mode or the start timing of the determination period T1.

The second temperature is the temperature detected by the temperature detector 5 at the second timing after the first timing. Here, the second timing corresponds to each timing of the sampling cycle of once per second following the specific timing t0. In short, with the first temperature as a reference, the difference between the first temperature and the second temperature detected at the most recent timing is defined as "temperature change". Therefore, the temperature change at a particular timing t0 is zero.

Characteristics G3 and G4 in FIG. 8 each show an example of "temperature change" based on the temperatures detected by two temperature detectors 5. In FIG. In the example of FIG. 8, the temperature indicated by the characteristic G3 is within the predetermined range R1 during the determination period T1, so it is determined that the operation of the temperature detector 5 corresponding to the characteristic G3 is normal. On the other hand, the temperature indicated by the characteristic G4 exceeds the third temperature threshold Tth3 corresponding to the upper limit value UP1 of the predetermined range R1 during the determination period T1 and is outside the predetermined range R1. The operation of the detector 5 is determined to be abnormal.

Here, the second temperature threshold Tth2 in Modification 1 is a correction value obtained by subtracting the first temperature from the second temperature threshold Tth2 (for example, 40° C.) in the basic example. Similarly, the third temperature threshold Tth3 in Modification 1 is a correction value obtained by subtracting the first temperature from the third temperature threshold Tth3 (for example, 60° C.) in the basic example. That is, the second temperature threshold Tth2 is lower than the first temperature threshold Tth1, and is variable according to the temperature (first temperature) detected by the temperature detection unit 5 at the specific timing t0.

In this way, the wiring device 1 of Modification 1 performs temperature determination using the temperature change with reference to the first temperature at a certain timing (first timing). As a result, it is possible to improve the reliability of operation confirmation regarding the performance of temperature detection.

In particular, in the wiring device 1 of Modification 1, the certain timing (first timing) is the specific timing t0 at which the heat source H1 starts to supply heat, so the first temperature is the ambient temperature before the inspection ( environment temperature at which the inspection is performed). Then, the second temperature threshold Tth2 becomes variable according to the ambient temperature. As a result, it is possible to cope with fluctuations in temperature rise due to the ambient temperature.

By the way, in the above column of "(2.4) Inspection of heat transfer member", the control unit 7 pre-stores in its own memory a reference temperature value used for inspecting the presence or absence of the heat transfer member 512. I explained what I was doing. This reference value is also desirably variable according to the ambient temperature. That is, in Modification 1, it is desirable that the control unit 7 corrects the reference value by subtracting the first temperature.

(3.2) Modification 2
Hereinafter, this modified example (modified example 2) of the wiring accessory 1 will be described with reference to FIGS. 9A and 9B. However, the same reference numerals are given to the components that are common to the wiring device 1 of the basic example, and the description thereof will be omitted as appropriate.

In the basic example, in the column of "(2.4) Inspection of heat transfer member", the wiring device 1 can not only check the operation of the temperature detection unit 5, but also check whether the heat transfer member 512 has been left unattached. explained. In the basic example, only the temperature detected by the first temperature detection unit 51 is used to check whether the heat transfer member 512 is left unattached.

Modification 2 uses not only the temperature detected by the first temperature detection unit 51 but also the temperature detected by the second temperature detection unit 52 to check whether the heat transfer member 512 is left unattached. different from

Specifically, the wiring accessory 1 of Modification 2 includes at least two temperature detectors 5 . Here, the wiring accessories 1 are provided with the 1st temperature detection part 51 and the 2nd temperature detection part 52 like the basic example. Further, similarly to the basic example, the first temperature detection portion 51 contacts the terminal member 2 via the heat transfer member 512 inside the device main body 4, and the second temperature detection portion 52 contacts the terminal member 2 inside the device main body 4. , contact the connecting member 3 .

Then, the second algorithm of modification 2 determines whether the difference (temperature difference) between the temperature detected by the first temperature detection unit 51 and the temperature detected by the second temperature detection unit 52 is smaller than the second temperature threshold value Tth2. (hereinafter referred to as "difference determination"). Although the second temperature threshold Tth2 of the basic example is a threshold higher than normal temperature, the second temperature threshold Tth2 of the modification 2 is set to 10° C., for example, because it serves as a threshold for difference determination.

FIG. 9A is a graph in a state (normal state) in which the heat transfer member 512 is arranged at a predetermined position. Characteristics G11 and G12 in the upper graph of FIG. 9A show examples of temperature characteristics detected by the first temperature detection section 51 and the second temperature detection section 52, respectively. In the upper graph of FIG. 9A , due to the heat transfer member 512 being arranged at a predetermined position, heat from the heat source H1 can be radiated to some extent by the heat transfer member 512. As a result, the characteristics G11 and G12 are roughly the same. Therefore, the temperature difference characteristic G13 is small, as shown in the lower graph of FIG. 9A, and is smaller than the second temperature threshold Tth2 (particularly within the determination period T1).

On the other hand, FIG. 9B is a graph in a state in which the heat transfer member 512 is left unattached. In the upper graph of FIG. 9B , the heat from the heat source H1 is difficult to dissipate due to the forgetting to attach the heat transfer member 512, and the temperature indicated by the characteristic G11 is generally higher than that of the characteristic G12. there is As a result, the temperature difference characteristic G13 exceeds the second temperature threshold Tth2 (particularly within the determination period T1), as shown in the lower graph of FIG. 9B.

The control unit 7 calculates the temperature difference between the temperature detected by the first temperature detection unit 51 and the temperature detected by the second temperature detection unit 52, and compares the temperature difference with the second temperature threshold Tth2. If the temperature difference is higher than the second temperature threshold value Tth2 within the determination period T1, the control unit 7 determines that the heat transfer member 512 is not arranged in the appliance main body 4 (forgotten attachment). The control unit 7 notifies the determination result regarding the presence or absence of the heat transfer member 512 through the buzzer 83 and the display unit 82 . Therefore, the inspector can easily inspect whether or not the heat transfer member 512 is installed (presence or absence of failure to install).

The second algorithm of Modified Example 2 may include not only the difference determination described above, but also temperature determination related to the operation inspection of the temperature detection section 5 of the basic example. However, it is necessary to separately set the second temperature threshold Tth2 for difference determination and the second temperature threshold Tth2 for temperature determination regarding operation inspection. The control unit 7 may perform the temperature determination regarding the operation test and the difference determination regarding the failure to attach the heat transfer member 512 substantially simultaneously within the determination period T1, or may perform the determination in separate periods.

(3.3) Other Modifications In the basic example, the control unit 7 switches from the first mode to the second mode in response to a predetermined operation on the switch 84 (for example, a long press operation for 5 seconds or more). However, the operation unit that receives predetermined operations is not limited to the switch 84 . For example, it may be a dedicated switch provided at a position (for example, the back side of the wiring device 1) that is not visible to the user who is using the wiring device 1. Moreover, the operation part which receives predetermined|prescribed operation may be an external remote controller which is a separate body from the wiring accessories 1. FIG. In this case, the wiring accessory 1 has a receiver that receives an instruction signal from the remote controller.

In the basic example, an example in which heat is supplied to the one surface 4A of the instrument main body 4 during inspection has been shown, but the present invention is not particularly limited. For example, heat may be supplied to the back surface 4B of the instrument main body 4 during inspection.

In the basic example, after switching from the first mode to the second mode, the wiring accessory 1 switches the second mode to the first mode when a predetermined time TM1 elapses. That is, the inspection operation mode is automatically terminated as time elapses. However, if a specific operation (for example, a long press operation again) is received before the predetermined time TM1 elapses, the wiring accessory 1 may forcibly switch the second mode to the first mode. Alternatively, the wiring accessory 1 may switch the second mode to the first mode when determining that all the temperature detection units 5 are operating normally.

In Modified Example 1, the wiring accessory 1 corrects the second temperature threshold Tth2 according to the environmental temperature. However, instead of correcting the second temperature threshold Tth2, the determination period T1 may be adjusted (corrected).

In the basic example, the receiving surface U1 (first surface 4A) supplies heat assuming the surface of the entire outer cover 42. Heat may be supplied in a detached state.

(4) Advantages As described above, the wiring device (1) according to the first aspect includes the device body (4), the temperature detector (5), and the controller (7). The temperature detector (5) detects the temperature corresponding to the power supply line (L1) in the instrument main body (4). A control unit (7) performs determination based on the temperature detected by the temperature detection unit (5), and performs at least one of cutting off the power supply line (L1) and notifying the temperature according to the result of the determination. The control unit (7) has, as operation modes, a first mode in which the determination is made based on a first algorithm and a second mode in which the determination is made based on a second algorithm different from the first algorithm. A control unit (7) switches from the first mode to the second mode according to a predetermined operation. According to the first aspect, the mode is switched from the first mode to the second mode according to a predetermined operation, and the determination is performed based on the second algorithm different from the first algorithm in the first mode. Therefore, for example, by using the second mode as a mode for operation confirmation (inspection), it is possible to improve the ease of operation confirmation related to temperature detection performance while suppressing deterioration in quality.

Regarding the wiring device (1) according to the second aspect, in the first aspect, the first algorithm preferably includes a determination of comparing the temperature with a first temperature threshold (Tth1). Preferably, the second algorithm includes a decision comparing said temperature to a second temperature threshold (Tth2). The second temperature threshold (Tth2) is preferably lower than the first temperature threshold (Tth1). According to the second aspect, for example, if the first mode corresponds to the normal operation mode when the wiring device (1) is used, switching to the second mode at the time of operation check allows the wiring device caused by the operation check to be switched to the second mode. The quality deterioration of (1) can be further suppressed.

Regarding the wiring device (1) according to the third aspect, in the second aspect, the second algorithm determines whether the temperature change from the first temperature to the second temperature is within a predetermined range (R1). preferably includes the determination of The lower limit (DW1) of the predetermined range (R1) is the second temperature threshold (Tth2), and the upper limit (UP1) of the predetermined range (R1) is the first temperature threshold (Tth1) and the second temperature threshold. (Tth2) is a third temperature threshold (Tth3). The first temperature is the temperature detected by the temperature detector (5) at the first timing. The second temperature is the temperature detected by the temperature detector (5) at the second timing after the first timing. According to the third aspect, it is possible to reduce the influence of the circuit error inherent in the temperature detection section (5) and improve the reliability of operation confirmation regarding the performance of temperature detection.

Regarding the wiring device (1) according to the fourth aspect, in the second aspect, at least two temperature detection units (5) are provided as a first temperature detection unit (51) and a second temperature detection unit (52). is preferred. The feed line (L1) preferably includes a connection member (3) to which the plug (91) is connected, and a terminal member (2) to which the feed line (L1) is connected. The first temperature detection part (51) contacts the terminal member (2) via the heat transfer member (512) in the device main body (4). The second temperature detection part (52) is in contact with the connection member (3) inside the instrument main body (4). The second algorithm determines whether or not the difference between the temperature detected by the first temperature detector (51) and the temperature detected by the second temperature detector (52) is smaller than a second temperature threshold (Tth2). preferably included. According to the fourth aspect, it is possible to easily inspect whether or not the heat transfer member (512) is arranged (presence or absence of forgetting to attach).

Regarding the wiring device (1) according to the fifth aspect, in any one of the first aspect to the fourth aspect, the controller (7), in the second mode, It is preferable to start the determination based on the second algorithm after (TM2) has passed. The specific timing (t0) is the timing at which heat having a temperature higher than at least room temperature begins to be supplied toward the appliance main body (4). According to the fifth aspect, it is highly likely that the above determination based on the second algorithm is made in a situation where sufficient heat is supplied and the temperature detected by the temperature detection unit (5) also rises. , it is possible to improve the reliability of operation confirmation regarding the performance of temperature detection.

Regarding the wiring device (1) according to the sixth aspect, in the fifth aspect, it is preferable that the power supply line (L1) includes a connecting member (3) to which the plug (91) is connected. The device body (4) preferably has a connection port (11) on one surface (4A) that faces the connection member (3) and into which a plug (91) is inserted. One side (4A) is preferably a receiving side (U1) exposed to heat. According to the sixth aspect, it is possible to easily check the performance of temperature detection using the connection port (11).

Regarding the wiring device (1) according to the seventh aspect, in the sixth aspect, it is preferable that the feeder line (L1) further includes a terminal member (2) to which the feeder line (92) is connected. The terminal member (2) is preferably exposed from the surface (back surface 4B) opposite to the one surface (4A) of the device main body (4). The temperature detection part (5) is in contact with the terminal member (2) via the heat transfer member (512) inside the device main body (4). The temperature detection part (5), the heat transfer member (512) and the terminal member (2) are similar to the temperature detection part (5), the heat transfer member (512) and the terminal member (2) when viewed from the reception surface (U1). ) is preferred. According to the seventh aspect, whether or not the heat transfer member (512) is installed can be inspected based on the temperature detected by the temperature detection section (5).

Regarding the wiring device (1) according to the eighth aspect, in any one of the fifth aspect to the seventh aspect, the first algorithm includes a determination of comparing the temperature with a first temperature threshold (Tth1) is preferred. The second algorithm preferably includes a decision comparing the temperature to a second temperature threshold (Tth2). The second temperature threshold (Tth2) is preferably lower than the first temperature threshold (Tth1) and is variable according to the temperature detected by the temperature detector (5) at specific timing (t0). According to the eighth aspect, since the second temperature threshold (Tth2) is variable according to the temperature detected by the temperature detection unit (5) at the specific timing (t0), fluctuations in temperature rise due to ambient temperature can handle.

Regarding the wiring device (1) according to the ninth aspect, in any one of the first to eighth aspects, it is preferable to further include an opening/closing part (M1). The switching unit (M1) performs interruption of the feeder line (L1). The opening/closing part (M1) also has an operating lever (operating member 81) that is displaced with respect to the instrument main body (4) in response to interruption of the power supply line (L1). Preferably, the control section (7) causes the opening/closing section (M1) to cut off the power supply line (L1) when either one of the first condition and the second condition is satisfied. The first condition is that, in the first mode, it is determined that an abnormal temperature rise has occurred in the appliance main body (4). The second condition is that the operation of the temperature detector (5) is determined to be normal in the second mode. According to the ninth aspect, in the second mode, by visually confirming the displacement of the operating lever, it is possible to know that the operation of the temperature detecting section (5) is normal. It is also possible to check whether the opening/closing part (M1) operates normally.

In the ninth aspect, it is preferable that the wiring device (1) according to the tenth aspect includes a plurality of temperature detectors (5). It is preferable that the second condition is that all of the plurality of temperature detectors (5) are determined to operate normally in the second mode. According to the tenth aspect, even if there are a plurality of temperature detectors (5), the operation of all the temperature detectors (5) can be collectively checked.

Regarding the wiring device (1) according to the eleventh aspect, in any one of the first to tenth aspects, the controller (7) is preferably configured as follows. That is, it is preferable that the control unit (7) switches the second mode to the first mode after a predetermined time (TM1) has elapsed after switching the operation mode from the first mode to the second mode. According to the eleventh aspect, it is possible to reduce the possibility that the wiring device (1) will be used in the second mode, for example.

A control method according to a twelfth aspect is a control method for a wiring device (1). The control method includes a detection step, a determination step, an execution step, and a switching step. In the detection step, the temperature corresponding to the power supply line (L1) in the device body (4) of the wiring device (1) is detected. In the determination step, determination is made based on the temperature detected in the detection step. In the execution step, at least one of cutting off the power supply line (L1) and notifying the temperature is performed according to the determination result. The determining step has, as operation modes, a first mode in which the determination is performed based on a first algorithm, and a second mode in which the determination is performed based on a second algorithm different from the first algorithm. In the switching step, the mode is switched from the first mode to the second mode according to a predetermined operation. According to the twelfth aspect, it is possible to provide a control method capable of improving the easiness of operation confirmation related to temperature detection performance while suppressing deterioration in the quality of the wiring device (1).

The configurations according to the second to eleventh aspects are not essential to the wiring device (1), and can be omitted as appropriate.

1 wiring device 2 terminal member 3 connection member 4 device main body 4A one surface 4B rear surface (opposite surface)
5 temperature detector 7 controller 11 connection port 81 operating member (operating lever)
91 plug 92 power supply line 512 heat transfer member L1 power supply line M1 switch t0 specific timing Tth1 first temperature threshold Tth2 second temperature threshold Tth3 third temperature threshold UP1 upper limit value DW1 lower limit value R1 predetermined range TM1 predetermined time TM2 regulation Time U1 Reception side

Claims (11)

an instrument main body;
a temperature detection unit that detects a temperature corresponding to a power feed line in the instrument main body;
a control unit that performs determination based on the temperature detected by the temperature detection unit, and performs at least one of cutting off the power supply line and notifying the temperature according to the result of the determination;
with
The control unit, as an operation mode,
a first mode as a normal operating mode in which the determination is made based on a first algorithm including a determination of comparing the temperature with a first temperature threshold;
A second operating mode for inspection in which the determination is based on a second algorithm, different from the first algorithm, including a determination comparing the temperature with a second temperature threshold lower than the first temperature threshold. has a mode and
The control unit switches from the first mode to the second mode in response to a predetermined operation ,
The second algorithm includes determining whether the value based on the temperature detected by the temperature detection unit falls within a predetermined range, and the lower limit of the predetermined range is the second temperature threshold. wherein the upper limit of the predetermined range is a third temperature threshold set between the first temperature threshold and the second temperature threshold;
Wiring device. The value based on the temperature detected by the temperature detection unit is a value of temperature change from a first temperature to a second temperature,
The second algorithm includes determining whether the temperature change is within the predetermined range ,
The first temperature is the temperature detected by the temperature detection unit at a first timing,
The second temperature is the temperature detected by the temperature detection unit at a second timing after the first timing.
The wiring device according to claim 1. At least two temperature detection units, a first temperature detection unit and a second temperature detection unit,
The power supply line includes a connection member to which a plug is connected and a terminal member to which a power supply line is connected,
the first temperature detection unit is in contact with the terminal member via a heat transfer member within the instrument main body;
the second temperature detection unit is in contact with the connection member within the instrument main body,
The second algorithm includes determining whether a difference between the temperature detected by the first temperature detection unit and the temperature detected by the second temperature detection unit is smaller than the second temperature threshold.
The wiring device according to claim 1. In the second mode, the control unit starts the determination based on the second algorithm after a specified time has elapsed from a specific timing,
The specific timing is a timing at which heat having a temperature higher than at least normal temperature starts to be supplied toward the instrument main body.
The wiring device according to any one of claims 1 to 3. the power supply line includes a connection member to which a plug is connected,
The instrument main body has, on one surface thereof, a connection port facing the connection member and into which the plug is inserted,
The one surface is a receiving surface exposed to the heat,
The wiring device according to claim 4. The power supply line further includes a terminal member to which the power supply line is connected,
the terminal member is exposed from a surface opposite to the one surface of the instrument main body,
the temperature detection unit is in contact with the terminal member via a heat transfer member within the instrument main body;
The temperature detection unit, the heat transfer member, and the terminal member are arranged in the order of the temperature detection unit, the heat transfer member, and the terminal member when viewed from the reception surface,
The wiring device according to claim 5. The second temperature threshold is variable according to the temperature detected by the temperature detection unit at the specific timing.
The wiring device according to any one of claims 4 to 6. further comprising an opening/closing unit having an operation lever that executes disconnection of the power supply line and that is displaced with respect to the instrument main body in accordance with the disconnection of the power supply line;
The control unit causes the opening/closing unit to cut off the power supply line when one of a first condition and a second condition is satisfied;
The first condition is that, in the first mode, it is determined that an abnormal temperature rise occurs in the instrument main body,
The second condition is that the operation of the temperature detection unit is determined to be normal in the second mode,
The wiring device according to any one of claims 1 to 7. comprising a plurality of the temperature detection units,
The second condition is that, in the second mode, it is determined that the operation of all the plurality of temperature detection units is normal.
The wiring device according to claim 8. After switching the operation mode from the first mode to the second mode, the control unit switches the second mode to the first mode after a predetermined time has elapsed.
The wiring device according to any one of claims 1 to 9. A wiring device control method,
a detection step of detecting a temperature corresponding to a power supply path in the device main body of the wiring device;
a determination step of performing a determination based on the temperature detected in the detection step;
an execution step of performing at least one of cutting off the power supply line and notifying the temperature according to the result of the determination;
a switching step;
including
The determination step includes, as an operation mode,
a first mode as a normal operating mode in which the determination is made based on a first algorithm including a determination of comparing the temperature with a first temperature threshold;
A second operating mode for inspection in which the determination is based on a second algorithm, different from the first algorithm, including a determination comparing the temperature with a second temperature threshold lower than the first temperature threshold. has a mode and
in the switching step, switching from the first mode to the second mode in response to a predetermined operation ;
The second algorithm includes determining whether the value based on the temperature detected in the detecting step falls within a predetermined range, and the lower limit of the predetermined range is the second temperature threshold. , wherein the upper limit of the predetermined range is a third temperature threshold set between the first temperature threshold and the second temperature threshold;
control method.

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