JP5010419B2 - Wiring connector - Google Patents

Description

  The present invention includes a first connection portion for connecting a covered electric wire such as a plug, an outlet, etc. to the outside, and a second connection for transferring power to and from the first connection portion. More particularly, the present invention relates to a wiring connector having a function of cutting off the supply of power when abnormal heat generation occurs.

  Various electric products are used in homes and offices, and the usage environment is also varied. Generally, an outlet is provided on a wall or floor, and an insertion plug arranged at the tip of a power cord of an electric product is inserted into the outlet for use. At this time, the plug itself may overheat, or the power supply side of the connection outlet having one end connected to the plug may overheat.

The main causes of overheating of such a wiring connector are as follows.
(1) When the blade of the plug is connected to the receptacle, cord connector body or multi-tap blade receiving part, overheating is generated due to poor connection.
(2) When an overcurrent occurs due to an abnormality in an electrical device, overheating accompanying an increase in the overall energization amount.
(3) Overheating due to overcurrent due to connection of electrical products exceeding the allowable current.
(4) Overheating (tracking phenomenon) due to dust adhering to the blade of the plug or the blade receiving portion of the outlet, and further spark discharge due to moisture on the dust.

  If such an overheated state is left unattended, there is a risk of fire, which is dangerous. Thus, it has been proposed to shut off the supply of power when the wiring connector detects abnormal overheating (see, for example, Patent Document 1).

  FIG. 31 shows the internal structure of the proposed plug. The insertion plug 100 includes a pair of insertion connection portions 103 and 104 on the other end side of the case 102 having one end connected to the end side of the supply cable 101 shown in the drawing. The feeding end 105 of the supply cable 101 is connected to the first internal contact 106 via a clamp, and the ground end 107 is connected to the second internal contact 108 via another clamp.

  A thermostat 109 for detecting an abnormal temperature is fixed to the center of the case 102 with screws 111 and 112. Above the thermostat 109, a reset button 113 for resetting the contact after detecting an abnormality is arranged. Between the pair of plug connection portions 103 and 104, the first and second internal contacts 106 and 108, and the thermostat 109, the pair of plug connection portions 103 and 104 and the first and second internal portions in a normal state. Various conductors such as a conductor 122 for conducting corresponding portions of the contacts 106 and 108 and interrupting them by a contact of the thermostat 109 when an abnormality occurs are wired.

  FIG. 32 shows a part of a cross section in the EE direction of the plug shown in FIG. In the groove portion 121 formed by the pair of projections 102A and 102B of the case 102, three conductive wires 122 are wired in this example. The thermosensitive portion 109A of the thermostat 109 is fixed to the groove portion 121 by screws 111 and 112 with projections 102A and 102B in a state where the lead wire 122 is pressed against the bottom surface of the case 102 from above.

In the plug 100 having such a structure, the heat sensitive portion 109 </ b> A is adapted to receive heat from the conducting wire 122. Therefore, when the energization amount of the conductive wire 122 increases abnormally and generates heat, the thermosensitive portion 109A detects this and the thermostat 109 is activated, and power supply to the pair of plug-in connection portions 103 and 104 is stopped. ing. Thereby, the safety of the plug 100 is ensured.
Japanese Unexamined Patent Publication No. 2007-173203 (paragraph 0028, FIGS. 1 and 3)

  However, the proposed plug 100 has a problem that the responsiveness to the heat generation of the conductor 122 is poor. As is well known, the conductive wire 122 has a structure in which the periphery of the internal conductive wire 122A made of a conductor is insulated and coated with a resin 122B. For this reason, when the internal conductor 122A generates heat, it takes time for the resin 122B to transfer this heat to the thermosensitive portion 109A of the thermostat. In addition, since the resin 122B has a circular cross section, the resin 122B comes into contact with the heat sensitive portion 109A only at one point on the circumference, and thus there is a problem that heat transfer efficiency is very poor.

  It should be noted that the internal conductor 122A cannot be exposed by removing the covering portion of the resin 122B from the internal conductor 122A. The plurality of internal conductors 122A may not be short-circuited by mutual contact, but the surface of the heat-sensitive portion 109A is made of metal in order to increase the thermal conductivity. Because there is.

  In addition, in the case of the proposed plug 100, there is a problem that it is not possible to quickly cope with abnormal overheating in places other than the conductor 122. For example, let us consider a case where one or both of the pair of plug connection portions 103 and 104 shown in FIG. 31 generate heat due to poor contact of a blade (not shown). In this case, the heat is transferred to the thermostat 109A of the thermostat through the conductive wire 122. However, the internal conducting wire 122A is formed of a relatively thin conducting wire, and the periphery thereof is covered with the resin 122B. For this reason, heat transfer efficiency is poor, and even if the plug-in connection portions 103 and 104 are overheated, a long time is required until the thermostat 109 operates.

  In addition, an unillustrated counterpart device that is supplied with power by the plug 100 may be in an abnormal state, and heat may be generated in a portion other than the blade receiving portion. In such a case, when the counterpart device touches the case 102 of the plug, the contact portion is overheated before the plug connection portions 103 and 104.

  It is assumed that such a situation occurs and the case 102 in contact with the conductive wire 122 shown in FIG. In this example, heat is transmitted to the thermostat 109A of the thermostat through the resin 122B portion of the conducting wire 122. The resin 122B is difficult to transmit heat and has a circular cross-sectional shape as described above. Therefore, even if the case 102 generates heat, it takes a long time for the thermostat 109 to operate and cut off the power supply to the counterpart device. Thus, in the case of the proposed plug 100, there is a problem that protection against overheating is often insufficient.

  Accordingly, an object of the present invention is to provide a wiring connector having improved responsiveness to heat generation.

The wiring connector of the present invention includes: (a) a first connecting portion for connecting a covered electric wire to the outside via a flat first conductor without covering; and (b) the first connection. And (c) a connection path for connecting between the first connection part and the second connection part, and at least one of them. a second conductor without tabular form the coated parts, (d) temperature sensing for detecting these tabular temperature detection surface heat generation are arranged opposite to these conductors of the first and second conductors Means, (e) a connection path blocking means for blocking the connection path when the temperature detection means detects a temperature higher than a preset temperature , (f) the temperature detection surface and the flat plate-like first plate An insulating sheet interposed therebetween to electrically insulate the first and second conductors; (G) The above-described flat plate-like first and second conductors are arranged at a predetermined interval on the same plane, and the above-described insulating sheet includes the first and second conductors and the above-described insulating sheet. One sheet disposed between the temperature detection surfaces, and a partition projection piece made of an insulator at a portion where the predetermined interval exists as described above is a wall shape that partitions the first and second conductors. It is characterized by being arranged in.

According to the present invention described above, since the temperature detecting means is disposed opposite to the flat first and second conductors without covering, the overheated state of the electric wire whose cross section is circular and whose outside is covered is covered as it is. The thickness of the connector for wiring can be reduced as compared with the case where the detection is performed with the remaining. Furthermore, according to the present invention, either the flat plate-like first and second conductors to be temperature-detected are brought into contact with parts such as blades and blade holders used for power supply to the outside, or connected for wiring. These temperature abnormalities can also be detected by contacting the container case itself.

  Hereinafter, the present invention will be described in detail with reference to examples.

  FIG. 1 shows the appearance of an insertion plug as a wiring connector in an embodiment of the present invention. The insertion plug 200 according to the present embodiment has a case 203 in which first and second blades 201 and 202 (however, the second blade 202 is not shown) protruded from the bottom surface of the case 203. A cover 204 is provided to cover the top. A reset hole 205 is provided at the center of the upper surface of the cover 204. The reset hole 205 is used to push down a reset button 206 attached to an upper portion of a thermostat (not shown) disposed in the case 203 when the plug-in plug 200 is reset. A power cord 207 for supplying power to an electric device (not shown) is attached to the end of the plug 200 that is located on the front side of the drawing.

  2 to 4 show the plug of this embodiment with the power cord connected. 2 shows the inside of the case as viewed from above, and FIG. 3 shows the entire plug from the AA direction in FIG. FIG. 4 shows the plug inserted from the direction DD in FIG.

As shown in FIG. 2, the power cord 207 is separated into a first cord 211 and a second cord 212 at the entrance of the case 203. Of these, the first cord 211 is soldered to the first thermostat terminal 214 attached to the thermostat body 213. The cord is not connected to the second thermostat terminal 215. The second thermostat terminal 215 is connected to the first heat transfer plate conducting piece 216 ₁ connected to the lower surface thereof. The second cord 212 is connected to the second heat transfer plate conducting piece 217 ₁ . Note that the metal-to-metal connection described in this specification may be performed by soldering as in this embodiment and various modifications, or other connection means such as spot welding or riveting can be used. .

As can be seen from FIG. 3, the _first heat transfer plate conducting piece 216 ₁ has an L shape in which one end is connected to the second thermostat terminal 215 and the other end is extended toward the bottom of the case 203. And constitutes a part of the first heat transfer plate 216. The first heat transfer plate 216 includes a first heat transfer surface portion 216 ₂ (FIGS. 3 and 4) constituting a part of the first heat transfer plate 216 and a second heat transfer surface portion constituting a part of the second heat transfer plate 217. 217 ₂ (FIG. 4) is arranged at a substantially central position of the bottom surface of the case 203 so as to be in contact with the bottom surface in a manner of dividing the region into two. As can be seen from FIG. 3, the first thin film insulating plate 218 between the bottom surface of the heat transfer surface portion 216 ₂ and the thermostat body 213 (the bottom side of the case 203 in FIG. 3) is interposed.

FIG. 5 is a view of the plug from the CC direction in FIG. As understood from FIG. 5, the thin-film insulating plate 218 covers the entire bottom surface of the thermostat main body 213, and not only the first heat transfer surface portion 216 ₂ but also the second heat transfer surface portion 217 ₂ is the thermostat. Electrical insulation from the main body 213 is ensured.

FIG. 6 is a view of the insertion plug from the BB direction in FIG. The first and second blades 201 and 202 are inserted into the blade insertion holes 219 and 220 (see FIG. 4) on the bottom surface side of the case 203, leaving their base portions bent in an L shape. The base side of the first blade 201 is joined to a first blade mounting piece 216 ₃ that constitutes a part of the first heat transfer plate conducting piece 216. Further, the base side of the second blade 202 is joined to a second blade mounting piece 217 ₃ constituting a part of the second heat transfer plate conducting piece 217. A cover 204 is screwed to the case 203 by an assembly screw 221.

Incidentally, FIG. 7 shows only the thin film insulating plate taken out and viewed from the position corresponding to the upper side of the case, and FIG. 8 is viewed from the position corresponding to the lower side of the case. In the thin-film insulating plate 218, the partition protrusions 218 ₁ are arranged at the boundary positions between the first and second heat transfer surface portions 216 ₂ and 217 ₂ shown in FIG. This serves as a partition so that the first and second heat transfer surface portions 216 ₂ and 217 ₂ do not come into electrical contact. The thin-film insulating plate 218 needs to be an insulator, but it is important that the thin-film insulating plate 218 conducts heat to the thermostat body 213 quickly. In this embodiment, the thickness t of the thin-film insulating plate 218 is 0.8 mm, and since it is thin, excellent thermal responsiveness is realized. Of course, the thickness of the thin insulating plate 218 is not limited to this, and the selection of the material is also important.

The height h of only the partition projection piece 218 ₁ not including the thickness t of the thin-film insulating plate 218 is equal to or lower than the thickness of the first and second heat transfer plates 216 and 217. Yes. If greater than the height h of the first and second thickness of the heat transfer surface portion 216 _2, 217 _2, by the presence bottom of the thermostat body 213 of the partition protrusion 218 ₁ shown in FIG. 5, a thin film-like insulating plate 218 This is because the first and second heat transfer surface portions 216 ₂ and 217 ₂ cannot be brought into close contact with each other, and heat transfer is performed insufficiently.

Note that the thin-film insulating plate 218 does not necessarily require the partition protrusion 218 ₁ to be disposed at the center thereof. For example, this portion of the case 203 may protrude in the direction of the thermostat body 213 with the thicknesses of the first and second heat transfer surface portions 216 ₂ and 217 _{2 being} the maximum value. Also in this case, the first and second heat transfer surface portions 216 ₂ and 217 ₂ are kept electrically insulated from the heat-sensitive surface 223 (FIG. 5) of the thermostat body due to the presence of the thin-film insulating plate 218. Can do.

FIG. 9 shows the overall shape of the first heat transfer plate. The first heat transfer plate 216 includes a relatively wide first heat transfer surface portion 216 ₂ , a first heat transfer plate conductive piece 216 ₁ and a first blade attachment piece formed integrally therewith. It consists of 216 ₃ . The thickness of the metal plate constituting the first heat transfer plate 216 is t ₁ .

The first heat transfer surface portion 216 ₂ is for transferring heat from other portions of the first heat transfer plate 216 to the heat sensitive surface 223 (FIG. 5) of the thermostat body, and shuts off the power supply in the event of an abnormality. is there. The first heat transfer surface portion 216 ₂ transfers heat from the first cord 211 by the first heat transfer plate conductive piece 216 ₁ . Further, the heat of the first blade 201 is transmitted by the first blade mounting piece 216 ₃ . Further, the first heat transfer surface portion 216 ₂ transfers the heat to the heat sensitive surface 223 of the thermostat body when the case 203 itself is overheated.

FIG. 10 shows the overall shape of the second heat transfer plate. The second heat transfer plate 217 includes a relatively wide second heat transfer surface portion 217 ₂ , a second heat transfer plate conductive piece 217 ₁ and a second blade mounting piece formed integrally therewith. It consists of 217 ₃ . The thickness of the metal plate constituting the second heat transfer plate 217 is t ₁ like the first heat transfer plate 216.

The second heat transfer surface portion 217 ₂ is for transferring heat from the other part of the second heat transfer plate 217 to the heat sensitive surface 223 (FIG. 5) of the thermostat main body to cut off the supply of power in the event of an abnormality. . The second heat transfer surface portion 217 ₂ transfers heat from the second cord 212 by the second heat transfer plate conductive piece 217 ₁ . Further, the heat of the second blade 202 is transmitted by the second blade mounting piece 217 ₃ . Further, like the first heat transfer surface portion 216 ₂ , the _second heat transfer surface portion 217 ₂ transfers the heat to the heat sensitive surface 223 of the thermostat body when the case 203 itself is overheated.

  FIG. 11 shows the electrical connection relationship of the plug in the embodiment described above. The first blade 201 of the plug 200 is connected to the second thermostat terminal 215 via the first heat transfer plate 216. Between the second thermostat terminal 215 and the first thermostat terminal 214, a thermostat switch circuit 245 whose contact is closed in a normal state before a temperature abnormality occurs is disposed. Therefore, the first blade 201 and the first cord 211 are electrically connected at a normal time before an abnormality occurs. Further, the second blade 202 is always connected to the second cord 212 by the second heat transfer plate 217. As a result, if the first and second blades 201 and 202 are connected to an outlet (not shown) at a normal time before an abnormality occurs, the first and second cords 211 and 212 supply power to a circuit device (not shown). Is supplied.

  FIG. 12 shows a state where the thermostat switch circuit is opened. Unlike the state of FIG. 11, when the thermostat body 213 detects abnormal heat generation, the contact of the thermostat switch circuit 245 is opened as shown in FIG. As a result, the electrical connection between the first and second thermostat terminals 214 and 215 is interrupted. As a result, even when the first and second blades 201 and 202 are connected to an outlet (not shown), power supply to a circuit device (not shown) connected to the first and second cords 211 and 212 is cut off. The After checking the cause of abnormal heat generation and taking a countermeasure, the user presses the reset button 206 shown in FIG. 5 to change the thermostat switch circuit 245 from the state shown in FIG. 12 to the state shown in FIG. The power supply can be started.

  FIG. 13 shows an example when a heat abnormality is detected from the case of the plug. Here, the case where the outlet 252 arranged on the wall 251 generates heat 253 is shown. When the outlet 252 is in a state of heat generation 253 for some reason, heat is transferred to the bottom surface of the case 203 when the plug 200 of this embodiment is attached thereto. This heat is transmitted to the thermostat body 213 through the thin film insulating plate 218 and the first and second heat transfer plates 216 and 217. For this reason, in the case of abnormal heat generation, the thermostat main body 213 operates, so that the power supply of the plug-in plug 200 is stopped.

According to the insertion plug 200 of the embodiment described above, unlike the insertion plug 100 shown in FIGS. 31 and 32, the heat from the first and second heat transfer surface portions 216 ₂ and 217 ₂ as metal plates. Is transmitted to the heat-sensitive surface 223 (FIG. 5) of the thermostat body through the thin-film insulating plate 218 in terms of area. For this reason, various heat generations can be transmitted to the thermostat quickly and efficiently, and various problems associated with overheating can be eliminated at an early stage, or fire can be prevented from occurring.

  Moreover, not only the overcurrent of the power cord 207 but also the first or second blades 201 and 202 and the case 203 themselves can be quickly responded.

  <First Modification of Invention>

  The present invention is not limited to the embodiments described above, and various modifications are possible.

  14 to 19 show a cord connector body according to a first modification of the present invention. Therefore, in FIGS. 14 to 18, the same parts as those in the previous embodiment such as FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  As shown in FIG. 14, the cord connector body 300 according to the first modification is provided in the case 203 </ b> A in place of the first and second blades 201 and 202 (FIG. 6) of the insertion plug 200 of the embodiment. First and second blade supports 301 and 302 are provided.

  FIG. 15 corresponds to FIG. 3 of the embodiment, and shows the entire cord connector from the A′-A ′ direction of FIG. 14. The first and second blade supports 301 and 302 are arranged in the upper portion of the case 203A and the cover 204A having slightly different shapes from the embodiment.

FIG. 16 corresponds to FIG. 6 of the embodiment, and shows the code connector viewed from the B′-B ′ direction of FIG. 14. Corresponding ones of the first and second blade receiving attachment pieces 216 ₃ A and 217 ₃ A are soldered to the end surfaces of the first and second blade receiving members 301 and 302 on the bottom side of the case 203A. Are connected by any of the above-mentioned methods. Insertion holes 311 and 312 for inserting blades of a power plug (not shown) in the direction from the top to the bottom in the drawing are provided directly above the first and second blade receiving attachment pieces 216 ₃ A and 217 ₃ A in the cover 204A. Has been worn.

Thus, since the present invention is applied to the cord connector in the first modification unlike the previous embodiment, the first and second heat transfer plate conductive pieces in the first and second heat transfer plates 216A and 217A are used. The shape of 216 ₁ , 217 ₁ and the first and second heat transfer surface portions 216 ₂ , 217 ₂ are the same as those of the embodiment, but instead of the first and second blade mounting pieces 216 ₃ , 217 ₃ First and second blade receiving attachment pieces 216 ₃ A and 217 ₃ A are provided.

FIG. 17 shows the overall shape of the first heat transfer plate in the first modification. The first blade receiving attachment piece 216 ₃ A is the same plane as the first heat transfer surface portion 216 ₂ and is narrow only in width in order to join the first blade receiving member 301 shown in FIG.

FIG. 18 shows the overall shape of the second heat transfer plate in the first modification. The second blade receiving attachment piece 217 ₃ A is the same plane as the _second heat transfer surface portion 217 ₂ and has a small width only in order to join the second blade receiving 302 shown in FIG.

  FIG. 19 corresponds to FIG. 11 and shows the electrical connection relationship of the cord connector in the first modification of the present invention. The first blade receiver 301 of the cord connector body 300 is connected to the second thermostat terminal 215 via the first heat transfer plate 216A. Between the second thermostat terminal 215 and the first thermostat terminal 214, a thermostat switch circuit 245 whose contact is closed in a normal state before a temperature abnormality occurs is disposed. Therefore, the first blade receiver 301 and the first cord 211 are electrically connected during normal times before an abnormality occurs. Further, the second blade receiver 302 is always connected to the second cord 212 by the second heat transfer plate 217A. As a result, if the first and second blade receivers 301 and 302 are connected to a power plug (not shown) at a normal time before an abnormality occurs, the power plugs described above from the first and second cords 211 and 212 are used. Is supplied with power.

  In this state, when the thermostat body 213 detects abnormal heat generation, the contact point of the thermostat switch circuit 245 is opened as shown in FIG. As a result, the electrical connection between the first and second thermostat terminals 214 and 215 is interrupted. As a result, even if the first and second blade receivers 301 and 302 are connected to the power plug described above, the supply of power to the power plug side is cut off. After examining the cause of abnormal heat generation and taking a countermeasure, the user presses the reset button 206 shown in FIG. 15 to change the thermostat switch circuit 245 from the state shown in FIG. 12 to the state shown in FIG. The power supply can be started.

  <Second Modification of Invention>

  20 to 26 show a multi-tap according to a second modification of the present invention. Therefore, in FIGS. 20 to 26, the same parts as those in the previous embodiment or the modification shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

FIG. 20 corresponds to FIG. As shown in FIG. 20, the multi-tap 400 according to the second modified example has 2 in the case 203 </ b> B instead of the first and second blades 201 and 202 (FIG. 6) of the insertion plug 200 of the embodiment. A set of first and second blade supports (401 ₁ , 402 ₁ ), (401 ₂ , 402 ₂ ) is provided. The thermostat body 213 is disposed between one set of first and second blade supports (401 ₁ , 402 ₁ ) and the other set of first and second blade supports (401 ₂ , 402 ₂ ). ing. Therefore, the lengths of the branched first and second cords 211B and 212B are slightly longer than the first and second cords 211 and 212 of the embodiment shown in FIG.

FIG. 21 corresponds to FIG. 3 and shows the entire multi-tap as viewed from the direction A ″ -A ″ in FIG. 20. FIG. 22 corresponds to FIG. 4 and shows a multi-tap as viewed from the direction D ″ -D ″ in FIG. In these drawings, the arrangement relationship between the thermostat main body 213 and the thin-film insulating plate 218 is the same as that of the embodiment and the first modification. A power plug blade (not shown) is placed on the cover 204B directly above the two sets of first and second blade supports (401 ₁ , 402 ₁ ), (401 ₂ , 402 ₂ ) from left to right in the drawing. Insertion / extraction holes 411 to 414 for insertion are formed.

FIG. 23 corresponds to FIG. 6 and shows the entire multi-tap as viewed from the direction B ″ -B ″ in FIG. 20. Corresponding ones of the first and second blade support mounting pieces 216 ₃ B and 217 ₃ B are provided on the end surfaces of the case 203B on the first and second blade receivers (401 ₁ , 402 ₁ ). The connection is made by any of the above-described methods such as soldering. Insertion holes 411 and 412 for inserting blades of a power plug (not shown) in the direction from the top to the bottom in the drawing are provided directly above the first and second blade receiving attachment pieces 216 ₃ B and 217 ₃ B in the cover 204B. Has been worn.

Thus, since the present invention is applied to the multi-tap in the second modification unlike the first modification, the first and second heat transfer in the first and second heat transfer plates 216B and 217B. The shape of the surface portions 216 ₂ , 217 ₂ and the first heat transfer plate conductive piece 216 ₁ is the same as that of the embodiment, but the second heat transfer plate conductive piece 217 ₁ B, the first and second blade support attachments The shapes of the pieces (216 ₃ B ₁ , 217 ₃ B ₁ ) are different. Further, first and second blade receiving attachment pieces (216 ₃ B ₂ , 217 ₃ B ₂ ) are newly provided.

FIG. 24 shows the overall shape of the first heat transfer plate in the second modification. Compared to the first heat transfer plate 216A in FIG. 17, the first heat transfer plate 216B in the second modified example, the first blade to the short side of the front side in the first diagram of the heat transfer surface portion 216 ₂ The receiving attachment piece 216 ₃ B ₂ is added.

FIG. 25 shows the overall shape of the second heat transfer plate in the second modification. Compared to the first heat transfer plate 216A shown in FIG. 24, the shapes excluding the second heat transfer plate conducting piece 217 ₁ B and the first heat transfer plate conducting piece 216 ₁ (FIG. 24) are symmetrical to each other. It has become. Compared with the second heat transfer plate conductive piece 217 _{1 of} FIG. 10 or FIG. 18, the second heat transfer plate conductive piece 217 ₁ B is located at the mounting position of the second cord 212B in FIG. Since it has shifted | deviated to the right side rather than a figure, the shape has changed in connection with this.

FIG. 26 corresponds to FIG. 11 and shows the electrical connection relationship of the multi-tap in the second modification of the present invention. The first blade receivers 401 ₁ and 401 ₂ of the multi-tap 400 are connected to the second thermostat terminal 215 via the first heat transfer plate 216B. Between the second thermostat terminal 215 and the first thermostat terminal 214, a thermostat switch circuit 245 whose contact is closed in a normal state before a temperature abnormality occurs is disposed. Accordingly, the first blade receivers 401 ₁ and 401 ₂ and the first cord 211B are electrically connected during normal times before an abnormality occurs. Further, the second blade receivers 402 ₁ and 402 ₂ are always connected to the second cord 212B by the second heat transfer plate 217B. As a result, in a normal time before an abnormality occurs, the first and second cord receivers 401 ₁ , 401 ₂ , 402 ₁ , and 402 ₂ are connected to a power plug (not shown) as long as the first and second cords are connected. Power is supplied from 211B and 212B to the power plug.

In this state, when the thermostat body 213 detects abnormal heat generation, the contact point of the thermostat switch circuit 245 is opened as shown in FIG. As a result, the electrical connection between the first and second thermostat terminals 214 and 215 is interrupted. As a result, even if the first and second blade receivers 401 ₁ , 401 ₂ , 402 ₁ , 402 ₂ are connected to the power plug described above, the supply of power to the power plug side is cut off. After examining the cause of abnormal heat generation and taking a countermeasure, the user presses the reset button 206 shown in FIG. 21 to change the thermostat switch circuit 245 from the state shown in FIG. 12 to the state shown in FIG. The power supply can be started.

  <Third Modification of the Invention>

  27 to 30 show an indoor wiring type outlet according to a third modification of the present invention. Therefore, in FIGS. 27 to 30, the same parts as those in the previous embodiment or the modification shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

FIG. 27 corresponds to FIG. As shown in FIG. 27, the outlet 500 according to the third modification includes two sets of first and second blade supports (401 ₁ , 402 ₁ ), (401 ₂ ) of the multi-tap 400 according to the second modification. , 402 ₂ ) and two sets of first and second blade supports (401 ₁ , 402 ₁ ), (401 ₂ , 402 ₂ ). A thermostat main body 213 is disposed at a position sandwiched between these.

In addition, the case inner wall in the vicinity of the first thermostat terminal 214 attached to the thermostat body 213 inside the case 203C has a first power supply connected to one of power supply lines (not shown) wired in parallel indoors. A terminal 501 is arranged. Furthermore, slightly closer position to the first blade receiving 401 ₂ on the opposite side of the deployed case the inner wall of the first power receiving terminals 501, the second power receiving terminals 502 are arranged. The first power receiving terminal 501 is electrically connected to the first thermostat terminal 214. The second power receiving terminal 502 is connected to the second heat transfer plate conducting piece 217 ₁ B.

  FIG. 28 corresponds to FIG. 21 of the second modification, and shows a state in which the inner side of the right side wall in FIG. 27 is cut. The difference is that the first and second power receiving terminals 501 and 502 are disposed and the first and second cords 211B and 212B shown in FIG. 21 are not wired.

  FIG. 29 corresponds to FIG. 22 of the second modification, and is a view of the outlet from the direction D ′ ″-D ′ ″ in FIG. 28. The arrangement relationship between the thermostat main body 213 and the thin-film insulating plate 218 and the first and second heat transfer plates 216B and 217B are the same as in the second modification. For this reason, the external appearances of the first and second heat transfer plates 216B and 217B are as shown in FIGS. 24 and 25, and are not shown. 27 is the same as FIG. 23 in which the outlet is cut in the direction of B ′ ″-B ′ ″, and therefore this drawing is also omitted.

FIG. 30 corresponds to FIG. 26 and shows the electrical connection relationship of the outlet in the third modified example of the present invention. The first blade receivers 401 ₁ and 401 ₂ of the outlet 500 are connected to the second thermostat terminal 215 via the first heat transfer plate 216B. Between the second thermostat terminal 215 and the first thermostat terminal 214, a thermostat switch circuit 245 whose contact is closed in a normal state before a temperature abnormality occurs is disposed. Therefore, the first blade receivers 401 ₁ and 401 ₂ and the first power receiving terminal 501 are electrically connected during normal times before an abnormality occurs. Further, the second blade receivers 402 ₁ and 402 ₂ are always connected to the second power receiving terminal 502 by the second heat transfer plate 217B. As a result, in a normal time before an abnormality occurs, the first and second blade receivers 401 ₁ , 401 ₂ , 402 ₁ , 402 ₂ are connected to the commercial power supply via the first and second power receiving terminals 501, 502. Power is supplied from 511.

In this state, when the thermostat body 213 detects abnormal heat generation, the contact point of the thermostat switch circuit 245 is opened as shown in FIG. As a result, the electrical connection between the first and second thermostat terminals 214 and 215 is interrupted. As a result, even if the first and second blade receivers 401 ₁ , 401 ₂ , 402 ₁ , 402 ₂ are connected to the power plug, the power supply to the power plug side is cut off. After examining the cause of abnormal heat generation and taking a countermeasure, the user presses the reset button 206 shown in FIG. 28 to change the thermostat switch circuit 245 from the state shown in FIG. 12 to the state shown in FIG. The power supply can be started.

  In the embodiment and the modification, the thermostat is used for temperature detection and power interruption, but it is natural that other temperature detection elements and switch circuits may be used. Moreover, although the blade and the heat transfer plate are separate parts in the embodiment, they can be integrally formed to form one part.

  In addition, the wiring connector is applied to any device that detects an abnormal temperature and stops the delivery of power, and its name is limited to the range of the names shown in the embodiments and modifications. Of course, it is not.

  Furthermore, the temperature detection surface of the temperature detection means does not need to be a conductor. If this surface is an insulator, even if a flat conductor for transferring power is brought into direct contact with the temperature detection surface, problems such as electric shock do not occur.

It is a perspective view of the plug as a connector for wiring in one example of the present invention. It is a top view of the state which removed the cover of the insertion plug of a present Example. It is AA sectional drawing of the plug shown in FIG. FIG. 4 is a DD cross-sectional view of the plug shown in FIG. 3. It is CC sectional drawing of the insertion plug shown in FIG. It is BB sectional drawing of the insertion plug shown in FIG. It is the perspective view which looked at the thin-film insulation board of a present Example from the top. It is the perspective view which looked at the thin-film insulation board of a present Example from the bottom. It is a perspective view showing the whole shape of the 1st heat exchanger plate of a present Example. It is a perspective view showing the whole shape of the 2nd heat exchanger plate of a present Example. It is a circuit connection diagram showing the electrical connection relationship of the insertion plug of a present Example. It is a circuit diagram which shows the state which the contact of the switch circuit of the thermostat main body opened in a present Example. It is explanatory drawing which showed the state which connected the plug of the present Example to the outlet. It is a top view in the state where the cover of the cord connector body in the 1st modification of the present invention was removed. It is A'-A 'sectional drawing of the cord connector body in a 1st modification. It is B'-B 'sectional drawing of the cord connector body in a 1st modification. It is a perspective view showing the whole shape of the 1st heat exchanger plate in the 1st modification. It is a perspective view showing the whole shape of the 2nd heat exchanger plate in the 1st modification. It is a circuit connection figure showing the electrical connection relation of the cord connector body of the 1st modification. It is a top view in the state where the cover of the multi tap in the 2nd modification of the present invention was removed. FIG. 21 is a cross-sectional view taken along line A ″ -A ″ of FIG. 20 in the multi-tap of the second modification example. FIG. 22 is a cross-sectional view taken along the line D ″ -D ″ of FIG. 21 in the multi-tap of the second modified example. FIG. 21 is a B ″ -B ″ cross-sectional view of FIG. 20 in the multi-tap of the second modification example. It is a perspective view showing the whole shape of the 1st heat exchanger plate in the 2nd modification. It is a perspective view showing the whole shape of the 2nd heat exchanger plate in the 2nd modification. It is a circuit connection figure showing the electrical connection relation of the multi tap of the 2nd modification. It is a top view of the state which removed the cover of the outlet socket in the 3rd modification of the present invention. It is sectional drawing showing the state which cut | disconnected the inner side of the right side wall in the outlet socket of a 3rd modification. FIG. 29 is a cross-sectional view taken along the line D ′ ″-D ′ ″ of FIG. 28 in the outlet according to the third modification. It is a circuit connection figure showing the electrical connection relation of the outlet socket in the 3rd modification. It is a perspective view showing the internal structure of the plug plug of the proposal relevant to this invention. FIG. 32 is an essential part cross-sectional view of the insertion plug shown in FIG. 31 taken along the line E-E.

Explanation of symbols

200 plug 200 201 first blade 202 second blade 206 reset button 207 power cord 211 first cord 212 second cord 213 thermostat body 214 first thermostat terminal 215 second thermostat terminal 216, 216A, 216B 1st heat transfer plate 216 ₁ 1st heat transfer plate conduction piece 216 ₂ 1st heat transfer surface part 216 ₃ , 1st blade attachment piece 216 ₃ A, 216 ₃ B 1st blade receiving attachment piece 217, 217A 217B 2nd heat transfer plate 217 ₁ 2nd heat transfer plate conduction piece 217 ₂ 2nd heat transfer surface part 217 ₃ , 2nd blade attachment piece 217 ₃ A, 217 ₃ B 1st blade receiving attachment piece 218 Thin film insulating plate 300 Cord connector body 400 Multi-tap 301, 401, 401 ₁ , 401 ₂ First blade holder 302, 402, 402 ₁ , 402 ₂ Blade receptacle 500 Outlet 501 First power receiving terminal 502 Second power receiving terminal

Claims (3)

A first connecting portion for connecting the covered electric wire to the outside via a flat first conductor without covering ;
A second connection for transferring power to and from the first connection;
A connection path for connecting between the first connection portion and the second connection portion inside, a flat second conductor without covering that forms at least a part thereof;
Temperature detection means for detecting these tabular temperature detection surface heat generation are arranged opposite to these conductors of the first and second conductors,
A connection path blocking means for blocking the connection path when the temperature detection means detects a temperature higher than a preset temperature ;
An insulating sheet interposed between the temperature detection surface and the flat plate-like first and second conductors to electrically insulate them ;
The flat plate-like first and second conductors are arranged at a predetermined interval on the same plane, and the insulating sheet is arranged between the first and second conductors and the temperature detection surface. In addition, a partition projection piece made of an insulator is arranged in a wall shape that partitions the first and second conductors at a portion where the predetermined interval exists.
Wiring connector characterized by that. At least one of the flat plate-like first and second conductors is in contact with at least a part of the inner wall of the case that houses the first and second connecting portions and the temperature detecting means. The connector for wiring according to claim 1. 2. The wiring connector according to claim 1, wherein the temperature detecting means is a thermostat, and a reset button is attached to cancel the disconnected state of the connection path .

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