TWI733570B - Countermeasures against overheating of sockets and sockets - Google Patents

Abstract

The object of the present invention is to provide a method for countermeasures against overheating between the blade inserting the plug and the blade of the socket and the blade receiving portion of the socket, and an overheat detection socket, taking into account deformation of the socket cover member and the like. . The present invention provides a method for countermeasures against overheating of a socket 10A having a blade receiving spring socket block 42a that accepts the insertion and removal of the blade S of the plug P. The temperature sensor 54 is arranged on the blade receiving spring socket block 42a, and the detection blade receives heat between the spring socket block 42a and the blade S, or detects insertion through the blade S of the plug P The blade receives the heat generated by the inserted plug P of the spring jack block 42a, and when the detected heat reaches a predetermined temperature or higher, an abnormality notification is performed, and the supply to the blade receiving spring jack block 42a is cut off At least any one of electricity.

Description

Countermeasures against overheating of sockets and sockets

The invention relates to an overheating countermeasure method for a socket and a socket.

In sockets that supply power to household appliances such as refrigerators that require continuous power, current always flows. Therefore, if an abnormality occurs in the plug of the household appliance, heat is likely to be generated. Specifically, there may be the following situations: the inserted plug is not correctly inserted into the socket, resulting in an increase in impedance between the blade of the inserted plug and the blade receiving part of the socket, resulting in heat generation, or the insertion of the plug itself Heat is generated due to thermal deterioration such as deterioration over time or insufficient crimping of the wires inside the plug. Here, we know that as a conventional technology focusing on the heat generated inside the socket, the socket is equipped with temperature sensing parts and periodically reports abnormalities (refer to Patent Document 1). [Literature Technical Literature] [Patent Literature]

[Patent Document 1] Registered Utility Model No. 3190957 Bulletin

[The problem to be solved by the invention]

In the aforementioned Patent Document 1, the temperature sensing component can be installed in contact with the power socket module to detect abnormal heat caused by poor heat dissipation or circuit aging. However, we are not aware of the technology for detecting the following situations: due to excessive insertion and removal of the inserted plug or application of unexpected load, resulting in the insertion between the blade of the inserted plug and the blade receiving part of the socket, or insertion Abnormal heat inside the plug. In addition, no one has paid much attention to the deformation of the socket cover member in contact with the plug-in plug due to the abnormal heat described above.

The object of the present invention is to provide a method for countermeasures against overheating between the inserting plug and the blade of the inserting plug and the blade receiving portion of the socket, as well as an overheating detection socket, taking into account the deformation of the socket cover member. [Technical means to solve the problem]

One aspect of the present invention, namely the socket overheating countermeasure method, is an overheating countermeasure method for a socket that accepts a blade receiving part inserted into and unplugged from a plug. It sets a temperature sensor on the blade receiving part and detects The heat generated between the blade receiving portion and the blade, or through the blade of the insert plug, detects the heating of the plug inserted in the blade receiving portion, and the detected heat reaches a predetermined value When the temperature is higher than the temperature, an abnormality notification is performed, and at least one of the power supply to the blade receiving portion is cut off.

Another aspect of the present invention, namely the socket, is a socket with a blade receiving portion that accepts the insertion and removal of the blade of the inserted plug, and includes: at least any one of a temperature sensor, a notification part, and a cut-off part, and The control unit, when the heat detected by the temperature sensor reaches a predetermined temperature or higher, executes the notification by the notification unit and the cut-off of the power supply by the cut-off unit. At least any one; the temperature sensor, which abuts on the blade receiving portion, and detects the heat between the blade receiving portion and the blade, or detects the blade through the insert of the plug The heat generation of the plug inserted into the blade receiving part is measured; the notification part reports abnormality; and the cutting part cuts off the power supply to the blade receiving part. [Compared with the effect of previous technology]

According to the socket overheating countermeasure method and socket according to the present invention, the plug or the abnormal heat generated between the blade of the plug and the blade receiving part of the socket can be detected, and an announcement or power supply can be made Cut off, so the safety of the power supply in the room can be improved.

Hereinafter, the implementation aspects of the present invention will be described in detail while referring to the attached drawings. In this description, the specific shapes, materials, numerical values, directions, etc. are examples for making the present disclosure easy to understand, and can be appropriately changed according to the use, purpose, specifications, and the like. In addition, in the following cases including plural implementation modes or modified examples, their characteristic parts can be appropriately combined and used, which was conceived from the beginning.

FIG. 1 is an overall perspective view of a socket 10 of the first embodiment installed together with a decorative cover. Fig. 2 is a front view of the socket 10 shown in Fig. 1. In Figures 1 and 2 (the other figures are the same), the arrow X represents the width direction (or left and right direction), the arrow Y represents the front and rear direction (or the depth direction), and the arrow Z represents the vertical direction (or Height direction). These three directions are perpendicular to each other. In addition, these directions are only examples, and do not substantially limit the structure of the socket according to the present invention.

As shown in FIGS. 1 and 2, the socket 10 is formed in a vertically long rectangular parallelepiped in a front view when viewed from the front. The size of the socket 10 is formed to a size limited to the JIS standard. The socket 10 is installed in a state of being buried in a wall or the like, for example.

A rectangular frame-shaped decorative cover 2 is arranged around the front surface of the socket 10. The decorative cover 2 is made of, for example, a resin molded product. The decorative cover 2 is a member used to make the appearance good. It is arranged around the front surface of the socket 10 to make a hole formed by the socket 10 on the wall or an installation tool for installing the socket 10 in this hole (not shown) Show) cannot be seen from the outside.

FIG. 3 is an exploded perspective view of the socket 10 with the socket body cover and the socket outer cover removed. As shown in FIGS. 1 to 3, the socket 10 includes a socket body cover (cover member) 12 and a socket outer cover (cover member) 14. Both the socket main body cover 12 and the socket outer cover 14 are made of resin molded products.

The socket body cover 12 is arranged to cover the front surface of the socket 10. The socket body cover 12 includes a top cover 12a and a bottom cover 12b. The top cover 12a is arranged to cover the front of the blade receiving spring socket block housed in the housing described later.

The blade insertion portions 18a and 18b are arranged in two upper and lower stages on the top cover 12a. The upper blade insertion portion 18a is formed with blade insertion ports 20a and 20b arranged in the left-right direction for receiving insertion of two plate-shaped blades of a plug (not shown). In addition, the blade insertion portion 18b at the lower stage is formed with blade insertion ports 20a and 20b arranged in the left-right direction for receiving the insertion of the two blades of the plug. At the same time, the blade insertion ports 20a and 20b are formed. The ground terminal insertion hole 20c for inserting the rod-shaped terminal for grounding is formed in the lower position of a space|interval. In this embodiment, the edge of the blade insertion port 20a on one side is formed into a substantially D-shaped frame when viewed from the front, and the edge of the blade insertion port 20b on the other side is formed into a rectangular frame. Examples are shown. However, this invention is not limited to this, The opening edge part of each blade insertion port 20a, 20b may be formed in the same shape.

The bottom cover 12b constituting a part of the socket body cover 12 is provided to cover the terminal part 100 housed in the housing 16. On the surface of the bottom cover 12b are attached the words "grounded" and "openable", signs indicating grounding, and the like. The bottom cover 12b is detachably installed with respect to the top cover 12a. In detail, the installation is performed by inserting the two mounting pins 13 formed integrally with the bottom cover 12b into the mounting holes 15 formed in the top cover 12a. By removing the bottom cover 12b from the socket 10, the grounding terminal part of the terminal part 100 is exposed. Thereby, the socket 10 becomes a state which can be connected with the external electric wire for grounding.

The socket outer cover 14 is formed in a U-shape in a front view viewed from the front, and is arranged adjacent to the outer sides of the upper, left, and lower sides of the socket main body cover 12. The socket outer cover 14 is provided to cover the front surface of the switch unit 70 described later. On the outer cover 14 of the socket, a longitudinally long rectangular opening 14a and a circular through hole 14b located above the opening 14a are formed. The operating lever 71 of the switch unit 70 is arranged in the opening 14a in an exposed state. In addition, inside (that is, behind) the through hole 14b, a push switch mounted on a substrate described later is arranged. Thereby, by inserting a thin rod-shaped tool or the tip of a pen into the through hole 14b, the push switch can be pressed down.

In the outer cover 14 of the socket, above the through hole 14b, the labels of "power" and "abnormal" are attached. The upper area marked "power", when power is supplied to the socket 10, becomes, for example, the power light portion 14c that lights up green, and the upper area marked "abnormal" becomes, for example, when the socket 10 heats up abnormally. The abnormal light portion 14d that lights up in red or is off. Furthermore, although the power source lamp portion 14c and the abnormal lamp portion 14d are light-transmitting portions that allow light to pass through the wall surface of the socket outer cover 14, they may be formed as light-transmitting windows each composed of through holes.

FIG. 4 shows a front view of the socket 10 with the socket body cover 12 and the socket outer cover 14 removed. FIG. 5 is an exploded perspective view showing the socket 10 shown in FIG. 4 with the housing 16 removed.

The socket 10 includes a housing 16. The housing 16 is made of, for example, a resin molded product. As shown in FIGS. 3 and 4, the housing 16 has a rectangular parallelepiped shape, has a bottom surface at the rear part, and a shape that is open to the front.

As shown in FIGS. 3 and 4, the engaging portion 22 protrudes and is formed on the outer surface along the longitudinal direction of the housing 16. Two engagement parts 22 are provided on each side with an interval. By engaging the hook portions (not shown) of the socket body cover 12 with the engaging portions 22, the socket body cover 12 is mounted on the housing 16.

As shown in FIG. 5, the two pillar portions 26 are provided upright on the bottom surface 24 of the housing 16 with an interval in the vertical direction Z. A space 28 for accommodating the switch unit 70 is partitioned between the column portions 26 and the housing inner surface 25a on one side in the width direction X. Moreover, between the said column part 26 and the inner surface 25b of the housing on the other side, the space 30 which accommodates the blade receiving spring unit 40, the board|substrate 120, etc. is partitioned.

In addition, in the front view from the front, the L-shaped partition wall portion 27 protrudes and is formed at the bottom of the bottom surface 24 of the housing 16. With this partition wall portion 27, a space 32 in which the terminal portion 100 is accommodated is partitioned in the housing 16.

In addition, a plurality of supporting protrusions 29 protrude and are formed on the bottom surface 24 of the housing 16. The front end surfaces of the supporting protrusions 29 support the substrate 120 housed in the housing 16.

Fig. 6 is a perspective view of the socket shown in Fig. 5 with the main body member and the housing of the switch unit removed. As shown in FIGS. 4 to 6, the socket 10 includes: a blade receiving spring unit 40, a switch unit 70 and a substrate 120. In addition, the socket 10 may include a terminal portion 102 for grounding.

The blade receiving spring unit 40 includes: two blade receiving spring receptacle blocks (blade receiving portions) 42a, 42b; a main body member 44 supporting the blade receiving spring receptacle blocks 42a, 42b; and a fixing member 46 , Which fixes the blade receiving spring socket blocks 42a, 42b in a state of abutting against the main body member 44. The main body member 44 and the fixing member 46 are preferably composed of insulating resin molded products. In addition, the blade receiving spring socket blocks 42a, 42b may also be held or fixed by being clamped by a pair of claws (not shown) provided on the main body member 44.

One of the blades receives the spring jack block 42a, and is a terminal member that is electrically connected to the external power line of the voltage phase (hereinafter referred to as L phase) connected to the terminal portion 100 of the socket 10. The other blade receiving spring socket block 42b is a terminal member electrically connected to the neutral phase (hereinafter referred to as N-phase) external power line of the terminal portion 100 of the socket 10. The blade receiving spring insertion hole blocks 42a and 42b are manufactured by punching and bending a metal plate such as a copper plate.

Each blade receives the spring jack blocks 42a, 42b, and blades of the same shape can be used to receive the spring jack blocks. Next, the following mainly describes the structure of one blade receiving spring insertion hole block 42a, and the other blade receiving spring insertion block 42b refers to the foregoing description of the structure, and the description thereof is appropriately omitted.

The blade receiving spring socket block 42a integrally includes: two pairs of blade receiving springs 48; a connecting portion 50, which is mechanically connected to each blade receiving spring 48 and electrically connected at the same time; and a connecting terminal portion 52, which is connected from The edge portion of the portion 50 is formed by bending in the front-rear direction.

In the blade receiving spring insertion hole block 42a for the L phase, a pair of blade receiving springs 48 are arranged inside the blade insertion opening 20a formed on the right side of the upper section of the top cover 12a. The other pair of blade receiving springs 48 are arranged inside the blade insertion opening 20a formed on the right side of the lower section of the top cover 12a (refer to FIG. 2).

In the blade receiving spring insertion hole block 42b for the N phase, a pair of blade receiving springs 48 are arranged inside the blade insertion opening 20b formed on the left side of the upper section of the top cover 12a. The other pair of blade receiving springs 48 are arranged inside the blade insertion opening 20b on the left side of the lower section of the top cover 12a (refer to FIG. 2).

As shown in FIG. 6, one end of the L-phase wire 54a is connected to the connecting terminal portion 52 of the blade receiving spring socket block 42a for the L-phase by welding or the like. In addition, one end of the N-phase wire 54b is connected to the connection terminal portion 52 (not shown) of the N-phase blade receiving spring socket block 42b by welding or the like. The L-phase wire 54a and the N-phase wire 54b are preferably composed of, for example, insulated-coated braided copper wires. The other ends of the L-phase wire 54a and the N-phase wire 54b are respectively connected to the switch unit 70.

In addition, the temperature sensors 54 are respectively provided in the connection terminal portions 52 of the blade receiving spring jack blocks 42a and 42b by clips 56 (refer to FIG. 11). The installation structure of the temperature sensor 54 will be described in detail later. The temperature sensor 54 respectively measures the temperature of the blades subjected to the spring jack blocks 42a and 42b, and transmits the measurement result to the substrate 120 via the signal lines 60a and 60b.

The substrate 120 is a circuit substrate on which a patterned wiring not shown is formed. The control unit 122 is mounted on the board 120. The control unit 122 determines whether the temperature of the blade receiving spring socket blocks 42a, 42b exceeds a predetermined threshold temperature (a predetermined temperature) based on the measurement result transmitted from the temperature sensor 54. Next, the control unit 122 determines that the socket 10 is overheated when the temperature of at least one of the spring socket blocks 42a, 42b on the blades exceeds the predetermined threshold temperature, and transmits the action signal to the switch described later via the signal line 60c unit.

Here, the predetermined threshold temperature can be set at, for example, 100°C to 150°C. The predetermined threshold temperature can be set according to the heat resistance temperature of the resin material of the socket body cover 12 or the main body member 44 constituting the socket 10. In addition, the predetermined threshold temperature can also be changed according to the ambient temperature (or ambient temperature) used by the socket 10. In addition, a buzzer device may be mounted on the substrate 120. The control section 122 may also turn on or off the abnormal light emitting section 136 when the temperature of at least one of the spring socket blocks 42a and 42b on the blade exceeds a predetermined threshold temperature and is judged to be in a heat-generating overheating state, At the same time, the buzzer device is sounded to perform notification actions. Furthermore, as the resin material constituting the cover member such as the socket body cover 12 or the main body member 44, it is preferable to use, for example, melamine resin, urea resin, polybutylene terephthalate resin (PBT), etc. .

The control unit 122 in this disclosure is preferably constituted by a computer. Computers are mainly composed of hardware with processors that operate in accordance with programs. As long as the function can be realized by executing the program, the type of processor is not required. The processor is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or a large scale integrated circuit (LSI: Large Scale Integration). A plurality of electronic circuits can be integrated in one chip, and can also be arranged in a plurality of chips. Multiple chips can be integrated in one device, and can also be provided in multiple devices. The program is stored in non-temporary recording media such as ROM, CD-ROM, and hard disk that can be read by the computer. The program can be stored in the recording medium in advance, and can also be supplied to the recording medium via a wide area network (WAN: Wide Area Network) including the Internet.

As shown in FIG. 6, two signal lines 62a and 62b extend from the back of the substrate 120. It is also possible to transmit the signal indicating the measurement result measured by the temperature sensor 54 or the operating state (on/off state) of the switch unit 70 to the external power control device or switchboard of the socket 10 through the signal lines 62a and 62b. .

In addition, in this embodiment, although the substrate 120 has the function of setting the overheating state of the socket 10 to be abnormal and detecting the function, it is not limited to this. The socket can also have a shock detection function that sets an earthquake above a predetermined earthquake intensity as an anomaly, and cuts off the power supply when it is detected. In this case, the vibration intensity can also be detected by a vibration sensor that can detect acceleration, such as a gyroscope sensor, which is provided on the substrate or other parts inside the socket. The shock sensor is connected to the control part on the substrate via patterned wiring or signal lines on the substrate. When the control unit determines that it is an earthquake with a predetermined seismic intensity or higher based on the input signal from the seismic sensor, it outputs an action signal to the switch unit. In addition, the socket according to the present invention can have such a shock detection function and the above-mentioned overheat detection function together, or can have a shock detection function alone. Furthermore, the socket according to the present invention can also have the function of combining the above-mentioned overheating or shock, with the leakage detection function of setting the leakage as abnormal and cutting off the current when detected, or the leakage detection function alone Test function. In addition, in order to detect leakage, a current sensor is installed in the socket. The structure of the current sensor is to make the switch unit operate when the current flowing through the blade to withstand the spring jack block exceeds a predetermined threshold current value. .

In a socket with such a shock detection function or a leakage detection function, it is also possible to share the components of the socket other than the substrate, thereby increasing the productivity of the socket and suppressing the manufacturing cost at the same time.

As shown in FIG. 6, the socket 10 includes a switch panel 130. The push switch 132 is installed on the switch panel 130. The push switch 132 is arranged inside the through hole 14b of the outer cover 14 of the socket (refer to FIGS. 1 to 3). Thereby, the push switch 132 can be pressed down from the outside of the socket 10 through the through hole 14b for operation. The switch board 130 is connected to the substrate 120 through signal lines. If the push switch 132 is pressed down for operation, the action signal will be transmitted from the substrate 120 to the switch unit 70 described later. Thereby, the switch unit 70 is switched from the closed state to the open state, and the pressing switch 132 becomes the on-off state indicating an abnormal state. In this way, it can be operated by pressing the push switch 132 downward to test whether the socket 10 is operating normally. In addition, the buzzer device that reports overheating can be stopped by pressing the push switch 132 downward for operation.

The power light emitting part 134 and the abnormal light emitting part 136 are installed on the switch panel 130. The power light emitting portion 134 is arranged to face the inner side of the power light portion 14c of the socket outer cover 14, and the abnormal light light emitting portion 136 is arranged to face the inner side of the abnormal light portion 14d of the socket outer cover 14 (refer to FIG. 2). The power light emitting part 134 is preferably formed by, for example, a light emitting diode (LED) that emits green light. The abnormal lamp light emitting part 136 is preferably formed by, for example, a light emitting diode (LED) that emits red light. The power light emitting part 134 is lit when the socket 10 is in a power supply state. The abnormal lamp light-emitting part 136 is turned on or off when an abnormality such as overheating is detected in the socket 10 as described later. Since the lighting state of the light-emitting parts 134 and 136 can be recognized from the outside of the socket 10, the light-emitting parts 134 and 136 constitute a part of the notification part.

Next, the switch unit 70 will be described with reference to FIGS. 7 and 8. FIG. 7 is a side view of the switch unit 70 in the closed state. FIG. 8 is a side view of the switch unit 70 in an open state. In FIGS. 7 and 8, the switch unit 70 is shown in a state where the wall surface of the housing covering the outside in the width direction is removed.

As shown in FIG. 7, the switch unit 70 has a housing 72. The operating lever 71 is in an exposed state, and is rotatably provided on the front surface of the housing 72.

The switch unit 70 is provided in the housing 72: a coil 73, a movable iron 74, a trigger lever 75, a support lever 76, an operating plate 77, a pressing spring 78, an operating member 79, crimping springs 80, 85, and an L-phase movable terminal Plate 81 and L-phase movable terminal section 82, N-phase movable terminal plate 83 and N-phase movable terminal section 84, L-phase fixed terminal plate 86 and L-phase fixed terminal section 87, and N-phase fixed terminal plate 88 and N-phase fixed terminal部89.

The coil 73 receives the operation signal from the substrate 120 and is supplied with electric power. Thereby, the coil 73 generates magnetic force. The movable iron piece 74 is arranged in the housing 72 at a position close to the back of the coil 73 (downward in FIG. 7), and is movable along the front-rear direction Y. The movable iron piece 74 is fixed to one end 83 a of the N-phase movable terminal plate 83. In addition, the other end of the N-phase wire 54b is electrically and mechanically connected to one end 83a of the N-phase movable terminal plate 83 by welding or the like.

The trigger lever 75 has a substantially L-shaped shape, is provided on the side wall surface of the width direction of the housing 72, and can rotate around the shaft portion 75a. One end of the trigger rod 75 is arranged at a position capable of engaging with the movable iron piece 74.

The support rod 76 has a shape extending in the front-rear direction Y, is provided on the side wall surface of the width direction of the housing 72, and can rotate around the shaft portion 76a. One end of the support rod 76 is arranged at a position capable of engaging with the other end of the trigger rod 75.

One end of the operating plate 77 abuts and is supported on the other end of the support rod 76. The actuating plate 77 is connected to the other end of the U-shaped pressing spring 78 whose one end is connected to the operating rod 71, and one end of the actuating plate 77 is pressed against the supporting rod 76 by the pressing force of the pressing spring 78. On the other end.

The torsion spring 90 is arranged around the center of rotation of the operating lever 71. As will be described later, when the switch unit 70 is operated and the power is cut off, the operating lever 71 is rotated by the biasing force of the torsion spring 90, and as shown in FIG. 8, it protrudes from the front surface of the socket 10.

As shown in FIG. 7, the actuating member 79 is arranged adjacent to the support rod 76 and the actuating plate 77, is provided on the side wall surface of the width direction of the housing 72, and is rotatable about the shaft portion 79a. The rear end portion (lower end portion in FIG. 7) of the actuating member 79 is biased by the pressure contact spring 80. Thereby, the actuating member 79 is biased in the counterclockwise rotation direction in FIG. 7 by pressing the spring 80.

The actuating member 79 has a substantially central portion in the front-rear direction Y so as to be engageable with the L-phase movable terminal plate 81. The other end of the L-phase wire 54a is electrically and mechanically connected to one end of the L-phase movable terminal plate 81 by welding or the like. In addition, the L-phase movable terminal portion 82 is fixed to the other end of the L-phase movable terminal plate 81 by, for example, riveting.

The L-phase movable terminal plate 81 resists the biasing force of the pressing spring 85 by the action member 79 and is pressed at a position to rotate in the clockwise direction. As a result, as described later, when the actuating member 79 is rotated counterclockwise by the biasing force of the pressing spring 80, the pressing of the actuating member 79 received by the L-phase movable terminal plate 81 is released, and thus it is crimped. The biasing force of the spring 85 pushes upward.

In addition, the actuating member 79 presses and abuts against the middle part of the N-phase movable terminal plate 83. The N-phase movable terminal portion 84 is fixed to the other end of the N-phase movable terminal plate 83 by, for example, riveting. As described later, when the moving member 79 rotates counterclockwise, the N-phase movable terminal plate 83 will be pushed up by the rear end of the moving member 79 (the lower end in FIG. 7), and the N-phase movable terminal 84 Will move forward (upper in Figure 7).

As shown in FIG. 7, the L-phase movable terminal portion 82 is in contact with and electrically connected to the L-phase fixed terminal portion 87 arranged in the housing 72. The L-phase fixed terminal portion 87 is fixed to one end of the L-phase fixed terminal plate 86 by, for example, riveting. The L-phase fixed terminal board 86 protrudes to the outside of the housing 72.

The N-phase movable terminal portion 84 is in contact with and electrically connected to the N-phase fixed terminal portion 89 arranged in the housing 72. The N-phase fixed terminal portion 89 is fixed to one end of the N-phase fixed terminal plate 88 by, for example, riveting. The N-phase fixed terminal board 88 protrudes to the outside of the housing 72.

In the switch unit 70 configured as described above, power is supplied to the coil 73 by an operation signal from the substrate 120. As shown in FIG. 8, the movable iron piece 74 is attracted by the magnetic force of the coil 73 and moves in the direction of arrow A.

In this way, one end of the trigger rod 75 will be pushed by the movable iron plate 74 and rotate in a clockwise direction. Accompanying this, the other end of the support rod 76 will be pushed by the trigger rod 75 and reverse. Turn in the clockwise direction.

In this way, one end of the actuating plate 77 originally supported by the upper end of the support rod 76 will be disengaged, and the actuating plate 77 is pushed backward (lower in FIG. 8) by the pressing force of the pressing spring 78 and is inclined. state. At this time, due to the reaction force of the pressing spring 78 and the biasing force of the torsion spring 90, the operating lever 71 rotates so that its end protrudes from the front surface of the socket 10.

Since the actuating plate 77 has been disengaged from the support by the support rod 76, the actuating member 79 that is pressed and supported by the actuating plate 77 in the clockwise direction will rotate counterclockwise due to the biasing force of the pressing spring 80. As a result, the L-phase movable terminal plate 81 moves due to the biasing force of the pressure contact spring 85 and separates the L-phase movable terminal portion 82 from the L-phase fixed terminal portion 87. At the same time, the N-phase movable terminal plate 83 is pushed by the action member 79 that rotates in the counterclockwise direction, and moves so as to be pushed upward. Thereby, the N-phase movable terminal portion 84 is separated from the N-phase fixed terminal portion 89. In this way, by separately separating the L-phase movable terminal portion 82 and the N-phase movable terminal portion 84 from the L-phase fixed terminal portion 87 and the N-phase fixed terminal portion 89, the switch unit 70 is switched from the closed state to the open state. As a result, the power supply to the blade receiving spring jack blocks 42a and 42b is cut off, and the power supplied from the socket 10 to the load such as household electrical appliances via the plug-in plug is cut off. When the abnormal state is removed, if the operating lever 71 is manually operated to return from the state shown in FIG. 8 to the state shown in FIG. 7, the components inside the switch unit 70 can also be restored from the state shown in FIG. 8 to the state shown in FIG. 7 shows the state, and from the open state back to the closed state.

In addition, the switch unit 70 is not limited to the above-mentioned configuration, and a conventional circuit interruption mechanism of any configuration may be used.

FIG. 9 is a perspective view showing a state in which a part of the terminal portion 100 of the socket 10 is disassembled. The socket 10 includes a terminal part 100. The terminal part 100 is a connection part that is electrically and mechanically connected to an external power line.

The terminal part 100 includes an L-phase fixed terminal plate 86, an N-phase fixed terminal plate 88, lock springs 92 and 94, and an unlock member 96. The L-phase fixed terminal plate 86 has an L-phase connecting portion 86a bent into a U-shape at the other end portion extending from the housing 72 of the switch unit 70. The N-phase fixed terminal plate 88 has an N-phase connection portion 88a bent into a U-shape at the other end portion extending from the housing 72 of the switch unit 70. Lock springs 92 and 94 are respectively arranged inside the phase connection portions 86a and 88a. Thereby, the connection parts 86a and 88a of each phase are inserted into the connection terminals of the L-phase and N-phase external power cords from the rear, respectively, and become so-called quick-connect terminals that can be quickly connected.

The unlocking member 96 can be pushed in to disengage the lock springs 92, 94 from the phase connection portions 86a, 88a. As a result, the connection terminals of the L-phase and N-phase external power cords can be connected from each phase The parts 86a, 88a are taken out.

In addition, the terminal part 100 includes a terminal part 102 for grounding. The ground terminal portion 102 includes, for example, a ground terminal plate 104, which is formed by punching and bending a metal plate such as a copper plate. One end of the ground terminal plate 104 is screwed with a screw 105, and this screw 105 can be used to connect the ground external wire to the ground terminal 102. At the other end of the ground terminal plate 104, a ground blade receiving spring 106 is formed. The ground blade receiving spring 106 is arranged inside the ground terminal insertion opening 20c formed in the lower section of the top cover 12a of the socket body cover 12. Thereby, the ground terminal of the plug inserted from the ground terminal insertion port 20c is connected to the ground terminal board 104.

Fig. 10 is a perspective view showing the installation structure of the temperature sensor of the socket. FIG. 11 is a top view showing a part of the notch in the mounting structure of the temperature sensor of FIG. 10. FIG. 12 is an exploded perspective view showing the blade receiving spring insertion hole blocks 42a, 42b and the main body member 44. FIG. In FIGS. 10 to 12, the illustration of the fixing member 46 constituting the blade receiving spring unit 40 is omitted.

As shown in FIGS. 10 to 12, the blade receiving spring unit 40 includes: L-phase blade receiving spring socket block 42a, N-phase blade receiving spring socket block 42b, and supporting the blade receiving spring sockets The main body member 44 of the blocks 42a, 42b. Each blade receiving spring socket block 42a, 42b has a symmetrical shape with respect to the width direction center line of the blade receiving spring unit 40, that is, the BB line. Hereinafter, although the description is made for the blade receiving spring insertion hole block 42a, the blade receiving spring insertion block 42b is also the same.

The blade receiving spring socket block 42a integrally includes: two pairs of blade receiving springs 48; a connecting portion 50, which is mechanically connected to each blade receiving spring 48 and electrically connected at the same time; and a connecting terminal portion 52, which is connected from The edge portion of the connecting portion 50 is formed by bending along the front-rear direction Y. In addition, the temperature sensor 54 is attached to the connection terminal part 52.

In this embodiment, the temperature sensor 54 is clamped and fixed by a clamp 56 which is an example of a pressing member. Thereby, the temperature sensor 54 is arranged in close contact with the temperature measurement object, that is, the blade receiving spring socket block 42a. The clip 56 integrally includes a pair of clamping pieces 56a and a connecting portion 56b that connects the clamping pieces 56a.

In this way, the temperature sensor 54 is clamped by the clip 56 to be mounted in a state of being in close contact with the connection terminal portion 52 which is the temperature measurement object. In this way, the temperature measurement accuracy of the temperature sensor 54 is improved. In addition, in a state where the temperature sensor 54 is attached to the connection terminal portion 52 with the clip 56, the blade receiving spring insertion hole blocks 42 a and 42 b can be easily assembled to the main body member 44.

The temperature sensor 54 is preferably composed of any one of a thermistor, a temperature measuring resistor, and a thermocouple. In this case, the clip 56 is any one of the thermistor, the temperature measuring resistor, and the thermocouple. , And the temperature measurement object, that is, the connection terminal portion 52 in close contact and installation. In addition, the thermally conductive member may also be sandwiched between the temperature sensor 54 and the connection terminal portion 52. The thermally conductive member is preferably composed of a soft and thin member such as a sheet having thermal conductivity or an ointment. By providing such a heat conduction member, the temperature sensor 54 is more likely to be in close contact with the temperature measurement object, which contributes to the improvement of temperature measurement accuracy.

In addition, in this embodiment, although the clip 56 is used as an example of the use of a pressing member for pressing the temperature sensor 54 so as to be in close contact with the temperature measurement object, that is, the connecting terminal portion 52, it is not Limited to this. A biasing member such as a coil spring or a leaf spring may be used instead of the clip 56 to push the temperature sensor to the temperature measurement object.

FIG. 13 is a perspective view showing a state in which a blade receiving spring insertion hole block 42a is assembled to the main body member 44. As shown in FIG. FIG. 14 is an exploded perspective view showing a blade receiving spring insertion hole block 42a and the main body member 44. FIG. In addition, in FIGS. 13 and 14, the illustration of the temperature sensor 54 and the clip 56 is omitted.

As shown in Figures 13 and 14, the blade receiving spring socket block 42a integrally includes: two pairs of blade receiving springs 48; a connecting portion 50, which is mechanically connected to each blade receiving spring 48 and electrically connected at the same time And the connecting terminal portion 52, which is formed by bending the edge portion of the connecting portion 50 along the front-rear direction Y. The blade receiving spring 48 includes a pair of blade receiving pieces facing each other. The front end of each blade receiving piece is bent to the outside and opened into a slightly V-shape. Thereby, the blade inserted into the plug can be surely inserted between the pair of blade receiving pieces.

In addition, the blade receiving spring insertion hole block 42a integrally includes a U-shaped curved spring portion 49, which is partitioned and provided on both sides of the blade receiving spring 48 including a pair of blade receiving pieces. The bent spring portion 49 has a bent portion 49a and a pair of extension portions 49b at the same time. The bent portion 49a is located on the same side as the front end of the pair of blade receiving pieces. The pair of extension portions 49b are drawn from the bent portion 49a. It extends to the base end side of the pair of blade receiving pieces.

The blade receives the spring insertion hole block 42 a, and is housed and arranged in the main body member 44. The main body member 44 is formed so as to be divided into four recesses 45. Among the inner wall surfaces that delimit the recessed portion 45, two ribs 47a are formed on the wall surface located on the center side of the width direction X by extending in the front-rear direction Y with a gap therebetween. The strength of the main body member 44 can be increased by the ribs 47a.

In addition, among the inner wall surfaces of the partition recess 45, the ribs 47b are formed on the inner wall surfaces facing each other in the vertical direction Z. As shown in FIG. 13, the ribs 47b will become a pair of curved spring portions 49 located on both sides of the upper and lower direction Z of the blade receiving spring 48 when the blade receiving spring insertion hole block 42a is assembled to the main body member 44. The state of being clamped by the extension 49b. In addition, the curved portion 49a of the curved spring portion 49 is in contact with the end of the rib 47b.

In this way, by abutting and assembling the bent portion 49a of the bent spring portion 49 to the end of the rib 47b formed in the main body member 44, the blade receiving spring insertion hole block 42a can be opposed to each other in a correctly positioned state. To the assembly of the main body member 44. In addition, by bending one of the pair of extension parts 49 b of the spring parts 49 into a state where the ribs 47 b are clamped, the reinforcing blade can receive the assembly of the spring insertion hole block 42 a with respect to the main body member 44.

In addition, if a force in the width direction X is applied to the plug in and out of the socket 10, the pair of blade receiving pieces will be plastically deformed and abnormally open, and the contact pressure between the blade and the blade receiving piece will be weakened. . As a result, tiny light-emitting discharges due to poor contact will occur, which can cause abnormal overheating. In contrast, in the socket 10 of this embodiment, the rib 47b is clamped to the curved spring portion 49 integrally formed with the blade receiving spring 48, even if the above-mentioned opening force acts on the pair of blade receiving pieces The formed blade bearing spring 48 can also prevent or inhibit abnormal opening and deformation.

In addition, in this embodiment, although the bending spring portion 49 is used to sandwich the ribs 47b formed on the two inner wall surfaces opposite to the upper and lower direction Z of the recessed portion 45, the explanation is made, but it is not limited to this. . It is also possible to sandwich the ribs protruding from the inner wall surface (that is, the bottom surface of the recess 45) in the front and rear direction Y of the recess 45 by a pair of extension parts of the curved spring part 49, or it can be received by a pair of blades The base end of the sheet (that is, the end on the side opposite to the front end) sandwiches the rib protruding from the bottom surface.

FIG. 15 is a perspective view showing a part of the terminal part 100 enlarged. As shown in FIG. 15, the terminal part 100 may be equipped with the printed circuit board 110 for temperature measurement. The temperature sensors 112a and 112b are mounted on the printed circuit board 110. The temperature sensors 112a and 112b are preferably constituted by any one of a thermistor, a temperature measuring resistor, and a thermocouple, for example. The temperature sensors 112a and 112b can also be covered and arranged on the printed circuit board 110 by means of heat conducting members. In this case, the temperature sensors 112a and 112b are joined to the L-phase fixed terminal board 86 and the N-phase fixed terminal board 88, which are the temperature measurement objects, via a thermally conductive member. The thermally conductive member is preferably a flexible resin having thermal conductivity. In this way, the temperature sensors 112a and 112b can be more closely connected to the temperature measurement object, thereby improving the temperature measurement accuracy. In addition, in order to make the electrical insulation between the L-phase fixed terminal plate 86 and the N-phase fixed terminal plate 88 more reliable, the thermally conductive member is preferably an insulating resin. As a specific example, a low-hardness acrylic resin can be used for the heat conduction member. For example, Hyper soft heat dissipation sheet (registered trademark) 6500H, 6510H, 5578H, etc. manufactured by 3M Company can be used.

The temperature sensor 112a mounted on the printed circuit board 110 is joined to the L-phase fixed terminal plate 86 and installed, and the temperature sensor 112b mounted on the printed circuit board 110 is joined to the N-phase fixed terminal plate 88 and installed. Then, the temperature of the L-phase fixed terminal plate 86 measured by the temperature sensor 112a is transmitted to the substrate 120 via the signal line 114a. In addition, the temperature of the N-phase fixed terminal plate 88 measured by the temperature sensor 112b is transmitted to the substrate 120 via the signal line 114b.

The control unit 122 provided on the substrate 120 determines whether the temperature of the fixed terminal measured by the temperature sensors 112a and 112b exceeds a predetermined threshold temperature. Then, the control unit 122 determines that the socket 10 is overheated when the temperature of at least one of the fixed terminal boards 86 and 88 exceeds a predetermined threshold temperature, and transmits the action signal to the switch unit 70 via the signal line 60c. Thereby, the switch unit 70 is operated to be in an open state, and the power supply to the blade receiving spring socket blocks 42a and 42b is cut off. The predetermined threshold temperature here can be the same value as "compared with the temperature measured by the temperature sensor 54 of the spring socket block 42a, 42b mentioned above by the blade", or it can also be set Is a value higher than this value.

In addition, in the socket 10 of this embodiment, both the blade receiving spring socket blocks 42a, 42b and the fixed terminal plates 86, 88 are equipped with temperature sensors, but it is also possible to only receive the spring insert on the blade. Any one of the hole blocks 42a, 42b or the fixed terminal boards 86, 88 configures a temperature sensor.

Next, referring to FIG. 16, the socket 10A of the second embodiment will be described. FIG. 16 is a cross-sectional view of a part of the socket 10A of the second embodiment, which is equivalent to the cross-section of CC in the socket 10 of the first embodiment shown in FIG. 2. In addition, in FIG. 16, the illustration of the clip 56 that clamps the temperature sensor 54 is omitted.

As shown in FIG. 16, the socket 10A includes a top cover 12 a constituting a part of the socket body cover 12. The top cover 12a is a cover member made of a resin material and formed with a blade insertion port (opening) 20a through which the blade S of the plug P is inserted.

A protrusion 12c is integrally formed on the back surface of the top cover 12a. The protruding portion 12c of the top cover 12a is in contact with the connecting portion 50 of the blade receiving spring socket block 42a. The protruding portion 12c may also be used to press the blade receiving spring insertion block 42a against the main body member 44, thereby fixing the blade receiving spring insertion block 42a relative to the main member 44. In this case, the fixing member 46 in the socket 10 of the first embodiment can be omitted.

In FIG. 16, although the other blade receiving spring insertion hole block 42b is not illustrated in figures, the protrusion 12c formed on the back surface of the top cover 12a is also arranged to abut against the blade receiving spring insertion block 42b. The protrusion 12c contacting the blade receiving spring insertion hole block 42b may be integrally formed with the protrusion 12c contacting the blade receiving spring insertion block 42a, or may be formed separately.

In addition, the other structure of the socket 10A is the same as that of the socket 10 of the first embodiment described above.

In the socket 10A of this embodiment, the detection blade can receive the heat generated between the spring jack blocks 42a, 42b and the blade S inserted into the plug P while receiving heat from the blade S inserted into the plug P. The detection inserting blade bears the heat of the inserting plug P of the spring jack blocks 42a, 42b. Specifically, when the plug P is not correctly inserted into the socket 10A, the resistance between the blade S and the blade receiving spring socket blocks 42a, 42b may increase. In this case, the temperature The sensor 54 detects the temperature rise caused by the blade receiving heat between the spring socket blocks 42a, 42b and the blade S inserted into the plug P. In addition, due to the deterioration of the inserted plug P itself over time, or thermal deterioration such as insufficient crimping of the wires inside the plug, abnormal heat generation may occur. In this case, heat is transferred from the insert plug P to the blade receiving spring socket blocks 42a, 42b via the blade S of the insertion plug P or the top cover 12a in contact with the insertion plug P. In this way, the temperature sensor 54 provided on the blade receiving spring socket blocks 42a, 42b can also detect abnormal heat generation in the plug P.

In addition, in a broad sense, dust and moisture can cause flicker (micro-luminescence discharge), and when the flicker continues to occur, it will cause insulation degradation, or the heat caused by poor contact will cause thermal degradation of the insulating material. , The resin material such as vinyl chloride that constitutes the plug body precipitates calcium chloride, and the material absorbs moisture to cause insulation damage; and the heat caused by structural deterioration causes the conductive path to form contamination and conduction phenomena, etc. Will produce abnormal heat. Such abnormal heat is also transmitted to the blade receiving spring socket blocks 42a, 42b, and can be detected by the temperature sensor 54.

The blades detected by the temperature sensor 54 are subjected to the temperature of the springs 42a and 42b, and are transmitted to the control portion 122 of the substrate 120 via the signal lines 60a and 60b. When the temperature of the blade receiving spring socket blocks 42a, 42b reaches a predetermined threshold temperature or higher, the control unit 122 mounted on the substrate 120 performs at least one of the following: activates the buzzer device and performs An abnormality is notified, or an operation signal is transmitted to the switch unit 70 to cut off the power supply to the blade receiving spring socket blocks 42a, 42b.

In more detail, the control part 122 derives the temperature of the protrusion 12c in the top cover 12a that abuts the blade receiving spring insertion block 42a, 42b from the blade receiving the temperature of the spring insertion block 42a, 42b . In addition, the predetermined threshold temperature for judging abnormal overheating in the control unit 122 is set so that the temperature of the protruding portion 12c is lower than the heat-resistant temperature of the resin material constituting the top cover 12a. Specifically, the above-mentioned predetermined threshold temperature is related to the heat transfer from the setting position of the temperature sensor 54 to the abutting portion of the protrusion 12c in the blade receiving spring socket blocks 42a, 42b. It is derived by analysis. The thermal analysis system multiplies the heat transferred to the blade receiving spring socket blocks 42a, 42b by the heat transfer length, and divides the value by the respective heat transfer parts of the blade receiving spring socket blocks 42a, 42b The cross-sectional area and thermal conductivity etc. However, the present invention is not limited to this. In the actual assembly socket 10A, when the heater is inserted into the blade receiving spring 48 and the heating blade receiving spring socket blocks 42a, 42b, the temperature sensor 54 Calculate the correlation between the detected temperature and the temperature measured by the temperature sensor arranged at the contact position of the protrusion 12c, and according to this correlation, the above-mentioned predetermined threshold temperature is calculated, It is set so that the temperature of the protrusion 12c is lower than the heat-resistant temperature of the resin material which comprises the top cover 12a. That is, the so-called correlation between the two refers to, for example, when the temperature of the blade receiving spring 48 is 110°C, the temperature of the protrusion 12c becomes 100°C due to the physical environment such as the above-mentioned heat. More specifically, when the blade receiving spring 48 is heated by a heater, the heating temperature of the heater is changed, and the temperature relationship between the blade receiving spring 48 and the protrusion 12c is obtained by obtaining a plurality of graphs to obtain the temperature correlation (Function), or save it as a table to set it up.

In the socket 10A of this embodiment, compared with the resin material of the top cover 12a, the resin material of the main body member 44 is preferably a material with a higher heat resistance temperature. On the other hand, compared with the resin material of the main body member 44, the resin material of the top cover 12a is preferably a material with higher surface hardness and higher tracking resistance. Specifically, urea resin can be used as the material of the top cover 12a, and polybutylene terephthalate-based resin can be used as the material of the main body member 44.

In addition, in the outlet 10A of this embodiment, the notification operation to the user during abnormal heat generation may be performed in stages as follows. That is, when the temperature detected by the temperature sensor 54 is above the first threshold temperature, the buzzer device is sounded, and the abnormal light emitting part 136 is lit at the same time, but the switch unit 70 remains stationary And continue to supply electricity. If this is the case, the user can notice the abnormal heating of the socket before the power is cut off, and before the switch unit 70 is operated and the power is cut off, for example, the personal computer can take measures such as temporarily saving the data in operation. After that, if the user removes the cause of the abnormal heating and causes the blades to bear the temperature drop of the spring socket blocks 42a, 42b, press the push switch 132 downward to operate, the buzzer sound can be stopped, and At the same time, the abnormal light emitting part 136 is turned off. In addition, in the socket 10A, when the temperature detected by the temperature sensor 54 is higher than the first threshold temperature and reaches the second threshold temperature, the buzzer device will sound, and at the same time The abnormal lamp light-emitting unit 136 is turned off, and the switch unit 70 is operated to cut off the power supply. Thereby, the thermal deformation of the top cover 12a, etc. can be prevented.

As described above, in the socket 10A of this embodiment, at least one of the following is performed: the temperature sensor 54 is provided on the blade receiving spring insertion hole blocks 42a, 42b, and the detecting blade receives the spring insertion block 42a, 42b. The heat generated between the hole blocks 42a, 42b and the blade S inserted into the plug P, or the blade S inserted into the plug P detects the heat generated by the inserted plug P inserted into the blade by the spring jack blocks 42a, 42b. That is, perform any one of the above detections, or perform "detection blades receive heat between the spring jack blocks 42a, 42b and the insertion plug P, and the insertion is detected by the blade S of the insertion plug P The blade bears both of the heat generated by the plug P of the spring jack blocks 42a and 42b. Then, when the detected heat generation reaches a predetermined threshold temperature or higher, thermal countermeasures are taken, that is, an abnormality report is performed, and at least one of the power supply to the blade receiving spring socket blocks 42a, 42b is cut off . With this, it can be detected that the plug P is inserted, or the blade S of the plug P and the blade of the socket 10A receive abnormal heat generated between the spring jack blocks 42a, 42b, and an announcement or power supply can be made. Cut off, so the safety of the indoor power supply can be improved.

In addition, in the socket 10A of this embodiment, it is preferable that at least a part of the blade receiving spring receptacle blocks 42a, 42b abut the blade insertion opening 20a through which the blade S for receiving the plug P penetrates. 20b, the top cover 12a is made of resin material, and from the temperature of the position where the temperature sensor 54 is installed, the temperature of the protrusion 12c in the top cover 12a that is in contact with the blade receiving spring socket blocks 42a, 42b is derived , And set the predetermined threshold temperature so that the temperature of the abutting protrusion 12c is lower than the heat-resistant temperature of the top cover 12a. According to this, the thermal deformation of the top cover 12a caused by abnormal heat generation can be prevented.

In addition, the present disclosure is not limited to the above-mentioned embodiments and modifications thereof, and it is of course possible to make various modifications or improvements within the scope of the matters described in the scope of the patent application of the present application.

2: decorative cover 10, 10A: socket 12: Socket body cover (cover member) 12a: Top cover 12b: bottom cover 12c: protrusion 13: Installation pin 14: Outer cover of the socket (cover member) 14a: opening 14b: Through hole 14c: Power lamp part 14d: Abnormal light part 15: Mounting hole 16: shell 18a, 18b: Blade insertion part 20a, 20b: Blade insertion port (opening) 20c: Ground terminal insertion port 22: The card joint 24: bottom surface 25a, 25b: inner surface of the shell 26: Column 27: Partition wall 28, 30, 32: space 29: Support protrusion 40: Blade bearing spring unit 42a, 42b: Blade receiving spring socket block (blade receiving part) 44: main component 45: recess 46: fixed component 47a, 47b: ribs 48: The blade bears the spring 49: Bending spring part 49a: Bend 49b: Extension 50, 56b: connecting part 52: Connection terminal 54,112a, 112b: temperature sensor 54a: L phase wire 54b: N-phase wire 56: Clip 56a: Clamping piece 60a, 60b, 60c, 62a, 62b, 114a, 114b: signal line 70: switch unit 71: Joystick 72: shell 73: Coil 74: movable iron sheet 75: trigger lever 75a, 76a, 79a: shaft 76: support rod 77: Actuation Board 78: Push spring 79: Action Component 80, 85: crimping spring 81: L-phase movable terminal board 82: L-phase movable terminal part 83: N-phase movable terminal board 83a: one end 84: N-phase movable terminal 86: L-phase fixed terminal board 86a: L-phase connection 87: L-phase fixed terminal 88: N-phase fixed terminal board 88a: N-phase connection 89: N-phase fixed terminal 90: Torsion spring 92, 94: Locking spring 96: Unlock the component 100: Terminal 102: Terminal for grounding 104: Terminal board for grounding 105: Screw 106: Blade spring for grounding 110: printed circuit board 120: substrate 122: Control Department 130: switch panel 132: Press the switch 134: Power light emitting part 136: Abnormal light emitting part A, X, Y, Z: arrow P: Insert the plug S: Blade

Fig. 1 is an overall perspective view showing the socket of the first embodiment provided with the decorative cover. Figure 2 shows a front view of the socket shown in Figure 1. Figure 3 shows an exploded perspective view of the socket with the socket body cover and the socket outer cover removed. Figure 4 shows the front view of the socket with the socket body cover and the socket outer cover removed. Fig. 5 is an exploded perspective view showing the socket shown in Fig. 4 with the housing removed. Fig. 6 is a perspective view showing the socket shown in Fig. 5 with the main body member and the switch unit housing removed. Fig. 7 is a side view showing the switch unit in the closed state. Fig. 8 is a side view showing the switch unit in an open state. Fig. 9 is a perspective view showing a state in which a part of the terminal part of the socket is disassembled. Fig. 10 is a perspective view showing the installation structure of the temperature sensor of the socket. FIG. 11 is a top view showing a part of the notch in the mounting structure of the temperature sensor of FIG. 10. Fig. 12 is an exploded perspective view showing the blade receiving spring socket block and the main body member. Fig. 13 is a perspective view showing a state where a blade receives the combination of the spring insertion hole block and the main body member. Fig. 14 is an exploded perspective view showing a blade receiving spring socket block and the main body member. Fig. 15 is an enlarged perspective view of a part of the terminal part. Fig. 16 is a cross-sectional view showing a part of the socket of the second embodiment.

10A: socket 12: Socket body cover (cover member) 12a: Top cover 12c: protrusion 16: shell 20a: Blade insertion port (opening) 42a: Blade receiving spring socket block (blade receiving part) 44: main component 48: The blade bears the spring 50: connecting part 52: Connection terminal 54: temperature sensor 60a: signal line P: Insert the plug S: Blade

Claims (8)

A method for countermeasures against overheating of a socket, the socket has a blade receiving part that accepts the insertion and removal of the blade of the inserted plug; Push the temperature sensor to the blade receiving part with a pushing member; When the insert plug inserted into the blade receiving portion does not produce an abnormal state, the heat between the blade receiving portion and the blade is detected, and the insertion plug inserted into the blade receiving portion generates In the case of an abnormal state, detecting abnormal heating of the plug-in plug through the cover member of the socket and the blade of the plug-in plug; In the case where the detected heat generation reaches a predetermined temperature or higher, at least one of an abnormality notification and the cutting off of the power supply to the blade receiving portion are performed. Such as claim 1, the socket overheating countermeasure method, among which, At least a part of the blade receiving portion abuts against a lid member formed with an opening penetrated by the blade of the plug-in plug and made of a resin material; Derive the temperature of the part of the cover member that abuts the blade receiving portion from the temperature at the installation position of the temperature sensor; and The predetermined temperature is set so that the temperature of the abutting portion is lower than the heat-resistant temperature of the lid member. Such as claim 1 or 2 of the socket overheating countermeasure method, among which, The pressing member is a clamp that clamps the temperature sensor. Such as claim 1 or 2 of the socket overheating countermeasure method, among which, The pressing member is a coil spring or a leaf spring. A socket with a blade receiving part that accepts the insertion and removal of the blade inserted into the plug, and includes: The temperature sensor is pressed against the blade receiving portion with a pressing member, and detects the gap between the blade receiving portion and the blade under the condition that the insert plug inserted into the blade receiving portion does not produce an abnormal state When the plug inserted into the blade receiving portion produces an abnormal state, the plug’s heat generation is detected through the cover member of the socket and the blade of the plug; At least one of the notification part that reports the abnormality and the cut-off part that cuts off the power supply to the blade receiving part; and The control unit, when the heat detected by the temperature sensor reaches a predetermined temperature or higher, executes at least one of the notification by the notification unit and the cut-off of the power supply by the cut-off unit Either. Such as the socket of claim 5, in which, At least a part of the blade receiving portion abuts against a cover member formed with an opening penetrated by the blade of the plug-in plug and made of a resin material; The control unit derives the temperature of the portion of the cover member that abuts the blade receiving portion based on the temperature at the location where the temperature sensor is installed, and sets the predetermined temperature to the value of the abutting portion The temperature is lower than the heat-resistant temperature of the cover member. Such as the socket of claim 5 or 6, in which, The pressing member is a clamp that clamps the temperature sensor. Such as the socket of claim 5 or 6, in which, The pressing member is a coil spring or a leaf spring.

Images