JP2019046686A - Connector and cable and terminal conversion adapter including the same - Google Patents

Abstract

To provide a connector or the like which is sensitive to overcurrent and overheating and can quickly protect an electric device.SOLUTION: A connector 10 includes: a feed terminal 11A for supplying DC power to a connection destination; and a circuit board 12 on which the feed terminal 11A is formed. The circuit board 12 is provided with a breaker 1 for interrupting a current in response to a temperature change and a first cover 13 covering the breaker 1. An adiabatic space 16 is formed between the breaker 1 and the first cover 13.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a connector or the like used in an electric device.

  Conventionally, a plug connector is used for power supply of various electric devices. For example, Patent Document 1 discloses a power plug that includes a breaker having a bimetal plate and a thermistor to protect an electric device from an overtemperature and an overcurrent condition.

JP 2012-514826 gazette

  In the power supply plug, the bimetal plate which is deformed due to overheating is covered with the metal shell, and the inclusion of foreign matter is prevented. In order to effectively exhibit the protective function of the breaker, it is important that the power plug be configured such that the temperature of the bimetal plate sensitively changes according to the state of the over temperature and the over current.

  However, in the above power plug, since the metal shell of the breaker is embedded in the housing of the power plug without a gap, the heat of the bimetal plate is conducted to the metal shell and the housing sequentially and released to the outside of the power plug . For this reason, the heat capacity of the breaker including the peripheral components such as the housing becomes large, and the temperature change of the bimetal plate according to the state of the over temperature and the over current becomes insensitive. As a result, the bimetal plate may not be able to cut off the circuit quickly even under the condition of over temperature and over current, and further improvement is expected.

  The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a connector or the like which is sensitive to over current and overheating and can quickly protect an electric device.

  In order to achieve the above object, according to a first invention of the present invention, there is provided a connector comprising: a feed terminal for supplying DC power to a connection destination; and a circuit board on which the feed terminal is formed. A breaker for interrupting current in response to a temperature change is provided, and a cover for covering the breaker is further provided, and a heat insulation space is formed between the breaker and the cover.

  In the connector according to the present invention, the breaker includes a fixed piece having a fixed contact, a movable piece having a movable contact at a tip end, pressing the movable contact against the fixed contact to bring about a change in temperature. A thermally responsive element for operating the movable piece such that the movable contact is separated from the fixed contact by being deformed, and a case for accommodating the fixed piece, the movable piece and the thermally responsive element, and the case Preferably, a first heat insulation space is formed between the cover and the cover.

  In the connector according to the present invention, the fixed piece and the movable piece have a terminal projecting to the outside of the case and joined to a land of the circuit board, and a portion between the terminal and the cover is 2) It is desirable that a heat insulation space is formed.

  In the connector according to the present invention, the cover preferably includes a first cover that abuts on the case.

  The connector according to the present invention preferably further includes an insulator filled on the outside of the first cover.

  In the connector according to the present invention, it is preferable that the connector further includes a metal frame that covers the outside of the insulator.

  In the connector according to the present invention, the cover preferably includes a second cover that constitutes an outer shell of the connector.

  A second invention of the present invention is a cable comprising the connector.

  A third invention of the present invention is a terminal conversion adapter comprising the connector.

  According to the connector of the first aspect of the present invention, the adiabatic space formed between the breaker and the cover suppresses the heat generated at the feeding terminal of the circuit board from being conducted to the cover via the breaker. As a result, the heat generated at the power supply terminal is suppressed from being released to the outside of the connector through the breaker and the cover, and the breaker responds sensitively to over current and overheating to rapidly protect the electric equipment. Is possible.

FIG. 1 is a perspective view showing a schematic configuration of a plug connector according to an embodiment of the first invention of the present invention. Sectional drawing of the longitudinal direction of the said connector. The perspective view before the assembly which shows schematic structure of the breaker mounted in the said connector. Sectional drawing which shows the said breaker in a normal charge or discharge state. Sectional drawing which shows the said breaker in an overcharge state or abnormal time. Sectional drawing which shows the modification of the said connector. Sectional drawing which shows another modification of the said connector.

(First invention)
A connector according to an embodiment of the first invention of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of a plug connector 10 (hereinafter sometimes simply referred to as the connector 10). The connector 10 can be connected to various devices and devices (hereinafter referred to as the electric device 100) that use various electric energy as a power source.

  The connector 10 is provided at the tip of the cable 50. The connector 10 includes a feed terminal 11A and a feed line 11. The power supply terminal 11A supplies DC power to the electric device 100 to which the connector 10 is connected. The feed terminal 11A is provided at the tip of the feed line 11. The electric device to which the connector 10 is connected is supplied with direct current power via the power supply terminal 11A and the power supply line 11. The feed terminal 11A and the feed line 11 may be divided into a plurality of paths for each input / output voltage.

  The feed line 11 is provided with a breaker 1. The breaker 1 interrupts the current flowing through the feed line 11 in response to the temperature change. For example, if the connector 10 overheats for some reason, the breaker 1 operates to cut off the current flowing through the feed line 11. Further, even when an overcurrent flows through the feed line 11, such as when a short circuit occurs in the feed line of the connector 10, the breaker 1 operates to interrupt the current flowing through the feed line 11. As a result, the heat generation of the connector 10 is stopped, and the connector 10 and its connection destination are protected.

  FIG. 2 shows a cross section of the connector 10. As shown in FIGS. 1 and 2, the connector 10 further comprises a circuit board 12.

  The circuit board 12 is formed in a rectangular shape. The circuit board 12 is formed of a conductive circuit in a pattern on an insulating substrate. The substrate is made of, for example, a composite material of a fiber material such as glass fiber and a resin material such as epoxy resin. Such a substrate is suitable for high frequency signal processing because of its high rigidity and low relative dielectric constant. By inserting the circuit board 12 into the connector 10, the strength and rigidity against external force of the connector 10 are enhanced. In addition, as the circuit board 12, for example, a film-like flexible printed board may be applied. In this case, the connector 10 can be easily miniaturized. Also, the connector 10 having a flexible structure can be easily manufactured.

  The breaker 1 is mounted on the circuit board 12 in a posture in which the longitudinal direction is directed to the longitudinal direction of the circuit board 12 (the extension direction of the cable 50). The breaker 1 may be mounted on the circuit board 12 in a posture in which the longitudinal direction of the breaker 1 faces the short direction of the circuit board 12. In the present embodiment, the circuit board 12 is provided with a conductive pattern 12A that constitutes the feed terminal 11A, the feed line 11, and the like.

  The conductive pattern 12A including the power supply terminal 11A and the power supply line 11 is formed on one or both of the front side surface (surface located on the upper side in FIGS. 1 and 2) and the back side surface of the circuit board 12. The conductive pattern 12 </ b> A is fixed to and supported by the circuit board 12. In the present embodiment, the feed line 11 is formed on the front side surface of the circuit board 12.

  The conductive pattern 12A includes a ground (GND) line and a signal transmission line. The ground line connects the grounds of the devices at both ends of the cable 50 to each other. The signal transmission line transmits an electrical signal between the devices at both ends of the cable 50. The transmission method of the electric signal may be serial transmission or parallel transmission.

  A plurality of wires 51 are inserted in the cable 50. Each wire 51 is insulated by the coating which has insulation. The tip of each wire 51 is connected to the conductive pattern 12A of the circuit board 12 by, for example, a solder 52 or the like.

  A first cover 13 is provided on the outside of the breaker 1. The first cover 13 covers the breaker 1. The first cover 13 is made of an insulating resin or the like, and is formed by injection molding or the like. The first cover 13 has a recess 13 a on its inner surface for receiving the breaker 1. The first cover 13 is in contact with the lid member 81 of the breaker 1 and is formed to cover a part or the whole of the case 7. The stress applied to the case 7 of the breaker 1, particularly to the lid member 81, is reduced by the first cover 13. Further, the height of the connector 10 is easily reduced by the contact of the first cover 13 and the lid member 81.

  When the plug connector 10 is connected to the receptacle connector 60 and the feed terminal 11A is energized, the feed terminal 11A generates heat due to the contact resistance. In order to protect the electrical device from over current and excessive heat generation, it is important to improve the responsiveness of the breaker 1 to over current and overheating.

  In the present embodiment, an adiabatic space 16 is formed between the breaker 1 and the first cover 13. The heat insulation space is a space filled with a gas such as air or a vacuum space instead of being filled with resin, metal and the like, and is a space excellent in heat insulation. The heat insulation space 16 suppresses the conduction of heat generated at the power supply terminal of the circuit board 12 to the first cover 13 via the breaker 1. As a result, the heat generated at the feed terminal 11A is suppressed from being released to the outside of the connector 10 through the breaker 1 and the first cover 13, and the breaker 1 responds sensitively to over current and overheating, It is possible to protect the device quickly.

  FIG. 3 shows the configuration of the breaker 1. The breaker 1 includes a fixed piece 2 having a fixed contact 21, a terminal piece 3, a movable piece 4 having a movable contact 41 at its tip, a thermally responsive element 5 that deforms with temperature change, and a PTC (Positive Temperature Coefficient) The thermistor 6, the fixed piece 2, the terminal piece 3, the movable piece 4, the thermally responsive element 5 and a case 7 accommodating the PTC thermistor 6 and the like. The case 7 is composed of a case body (first case) 71 and a lid member (second case) 81 mounted on the upper surface of the case body 71.

  The fixed piece 2 is formed by, for example, pressing a metal plate mainly made of copper or the like (in addition, a metal plate such as a copper-titanium alloy, nickel, brass, etc.) It is embedded. A terminal 22 (1C) electrically connected to an external circuit is formed at one end of the fixed piece 2, and a support 23 for supporting the PTC thermistor 6 is formed at the other end. The PTC thermistor 6 is placed on the convex protrusions (dubbos) 24 formed at three locations on the support portion 23 of the fixed piece 2 and supported by the protrusions 24.

  The fixed contact 21 is formed at a position facing the movable contact 41 by clad, plating, coating, etc. of silver, nickel, nickel-silver alloy, copper-silver alloy, gold-silver alloy, etc. with good conductivity. , And a portion of the opening 73a formed in the inside of the case main body 71. The terminal 22 is protruded outward from the end edge of the case main body 71. The support portion 23 is exposed from an opening 73 d formed in the case main body 71.

  The terminal piece 3 is formed by pressing a metal plate containing copper or the like as a main component, similarly to the fixing piece 2, and is embedded in the case main body 71 by insert molding. A terminal 32 electrically connected to the external circuit is formed at one end of the terminal piece 3, and a connection portion 33 electrically connected to the movable piece 4 is formed at the other end. The terminal 32 is protruded outward from the end edge of the case main body 71. The connection portion 33 is exposed from the opening 73 b provided inside the case main body 71, and is electrically connected to the movable piece 4 by, for example, laser welding or the like.

  One of the terminals 22 and 32 is connected to the land on the power supply terminal 11A side of the connector 10, and the other to the land on the cable 50 side.

  The movable piece 4 is formed in a shape of an arm symmetrical with respect to a longitudinal center line by pressing a plate-like metal material. As a material of the movable piece 4, a material containing copper or the like equivalent to the fixed piece 2 as a main component is preferable. Besides, conductive elastic materials such as copper-titanium alloy, nickel, brass and the like may be used.

  The movable piece 4 and the terminal piece 3 may be integrally formed of one metal plate. As a breaker which implement | achieves this meaning, the movable piece currently integrally formed with the terminal piece is disclosed by Unexamined-Japanese-Patent No. 2012-238615 and 2013-101032, for example.

  A movable contact 41 is formed at the tip of the movable piece 4. The movable contact 41 is formed of a material equivalent to that of the fixed contact 21 and is joined to the tip of the movable piece 4 by welding, crimping, crimping or the like.

  A connection portion 42 electrically connected to the connection portion 33 of the terminal piece 3 is formed at the base end of the movable piece 4. The connection portion 33 of the terminal piece 3 and the connection portion 42 of the movable piece 4 are fixed, for example, by welding.

  The movable piece 4 has an elastic portion 43 between the movable contact 41 and the connection portion 42. The elastic portion 43 is extended from the connection portion 42 to the movable contact 41 side. The movable piece 4 is fixed by being fixed to the connection portion 33 of the terminal piece 3 at the connection portion 42, and the elastic contact portion 43 is elastically deformed to move the movable contact 41 formed at the tip to the fixed contact 21 side. The fixed piece 2 and the movable piece 4 can be energized. Since the movable piece 4 and the terminal piece 3 are electrically connected, the fixed piece 2 and the terminal piece 3 can be energized.

  The movable piece 4 is curved or bent in the elastic portion 43 by press processing. The degree of bending or bending is not particularly limited as long as the thermally responsive element 5 can be accommodated, and may be appropriately set in consideration of the elastic force at the operating temperature and the return temperature, the pressing force of the contact, and the like.

  The thermally responsive element 5 has an initial shape curved in an arc shape, and is formed by laminating thin plate materials having different coefficients of thermal expansion. When the operating temperature is reached due to overheating, the curved shape of the thermally responsive element 5 is reversely warped with snap motion and is restored when it falls below the recovery temperature due to cooling. The initial shape of the thermally responsive element 5 can be formed by press processing. As long as the elastic portion 43 of the movable piece 4 is pushed up by the reverse warping operation of the thermal reaction element 5 at the desired temperature and returns to the original state by the elastic force of the elastic portion 43, the material and shape of the thermal reaction element 5 are particularly limited. Although not rectangular, a rectangle is desirable from the viewpoint of productivity and the efficiency of the reverse warpage operation, and in order to effectively push up the elastic portion 43 while being small, it is desirable to be a rectangle close to a square. The material of the thermal reaction element 5 is, for example, copper-nickel-manganese alloy or nickel-chromium-iron alloy on the high expansion side, iron-nickel alloy on the low expansion side, etc., nickel, brass, stainless steel What laminated | stacked two types of materials which differ in the thermal expansion coefficient which consists of various alloys, such as steel, is used in combination according to requirements.

  Alternatively, the movable piece 4 and the thermally responsive element 5 may be integrally formed by forming the movable piece 4 with a laminated metal such as a bimetal or a trimetal. In this case, the structure of the breaker is simplified and further miniaturization can be achieved.

  The PTC thermistor 6 is disposed between the fixed piece 2 and the thermally responsive element 5. That is, the fixed piece 2 is located immediately below the thermally responsive element 5 with the PTC thermistor 6 interposed therebetween. When the energization of the fixed piece 2 and the movable piece 4 is cut off by the reverse warping operation of the thermally responsive element 5, the current flowing to the PTC thermistor 6 is increased. If the PTC thermistor 6 is a positive characteristic thermistor that limits the current by increasing its resistance value with temperature rise, the type can be selected according to the operating current, operating voltage, operating temperature, recovery temperature, etc. Materials and shapes are not particularly limited as long as these properties are not impaired. In the present embodiment, a ceramic sintered body containing barium titanate, strontium titanate or calcium titanate is used. In addition to the ceramic sintered body, a so-called polymer PTC in which a polymer contains conductive particles such as carbon may be used.

  During operation of the thermally responsive element 5, the PTC thermistor 6 maintains the deformation of the thermally responsive element 5 by heat generation, and holds the current interruption state of the breaker 1. If such a self-holding function of the breaker 1 is unnecessary, the PTC thermistor 6 may be discarded.

  The case main body 71 and the lid member 81 constituting the case 7 are molded of thermoplastic resin such as flame retardant polyamide, polyphenylene sulfide (PPS) excellent in heat resistance, liquid crystal polymer (LCP), polybutylene terephthalate (PBT), etc. It is done. The thermoplastic resin constituting the case 7 is preferably a resin having a melting point higher than that of the resin constituting the insulator 17 because the insulator 17 is formed outside the breaker 1. As a resin material used for the case main body 71 and the lid member 81, a resin material suitable for flame retardancy, for example, a resin material of V-0 grade or higher according to UL 94 standard is preferable. In addition, materials other than the thermosetting resin or resin may be applied as long as the characteristics equal to or more than the above-described resin can be obtained.

  The case main body 71 is formed with a housing recess 73 for housing the movable piece 4, the thermally responsive element 5, the PTC thermistor 6 and the like. The housing recess 73 has openings 73 a and 73 b for housing the movable piece 4, an opening 73 c for housing the movable piece 4 and the thermally responsive element 5, and an opening 73 d for housing the PTC thermistor 6 and the like. doing. The end edges of the movable piece 4 and the thermally responsive element 5 incorporated in the case main body 71 are respectively abutted by a frame formed inside the accommodation recess 73 and guided when the thermally responsive element 5 is reversely warped. .

  The cover piece 9 is embedded in the lid member 81 by insert molding. The cover piece 9 is formed, for example, by pressing a metal plate such as stainless steel. As shown in FIGS. 8 and 9 described later, the cover piece 9 appropriately contacts the surface of the movable piece 4 to restrict the movement of the movable piece 4, and the rigidity of the case 7 as a case of the cover member 81. -Contribute to the miniaturization of the breaker 1 while increasing the strength. A resin is disposed on the outer surface side of the cover piece 9.

  As shown in FIG. 3, the cover member 81 is a case so as to close the openings 73a, 73b, 73c, etc. of the case main body 71 accommodating the fixed piece 2, the movable piece 4, the thermally responsive element 5, the PTC thermistor 6 and the like. It is mounted on the main body 71. The case main body 71 and the lid member 81 are joined, for example, by ultrasonic welding. The case body 71 and the lid member 81 are joined over the entire circumference outside the accommodation recess 73, so the internal space of the accommodation recess 73 is sealed and isolated from the outside of the breaker 1. Thereby, the airtightness of case 7 is enhanced. Therefore, the risk of the internal configuration of the breaker 1 being affected by the manufacturing process of the connector 10 is reduced, and the reliability of the operation of the breaker 1 is enhanced. In addition, even if foreign matter gets inside the connector 10, the operation of the breaker 1 is maintained normally.

  The method of joining the case main body 71 and the lid member 81 is not limited to ultrasonic welding, and any method may be used as long as the two are firmly joined and sufficient airtightness can be obtained. For example, both may be adhered by applying, filling and curing a liquid or gel adhesive.

  FIG. 4 shows the operation of the breaker 1 in a normal charging or discharging state. In the normal charging or discharging state, the thermally responsive element 5 maintains its initial shape (before reverse bending), and the fixed contact 21 and the movable contact 41 are in contact, and the elastic portion 43 of the movable piece 4 etc. The terminals 22 and 32 are electrically connected. The elastic portion 43 of the movable piece 4 and the thermal reaction element 5 are in contact with each other, and the movable piece 4, the thermal reaction element 5, the PTC thermistor 6 and the fixed piece 2 are conducted as a circuit. However, since the resistance of the PTC thermistor 6 is overwhelmingly larger than the resistance of the movable piece 4, the current flowing through the PTC thermistor 6 is substantially smaller than the amount flowing through the fixed contact 21 and the movable contact 41. It is negligible.

  FIG. 5 shows the operation of the breaker 1 in an overcharged state or an abnormal state. When the high temperature state is reached due to overcharge or abnormality, the thermal reaction element 5 that has reached the operating temperature is reversely warped, the elastic portion 43 of the movable piece 4 is pushed up, and the fixed contact 21 and the movable contact 41 separate. At this time, the current flowing between the fixed contact 21 and the movable contact 41 is interrupted, and a slight leakage current flows through the thermal response element 5 and the PTC thermistor 6. The PTC thermistor 6 continues to generate heat as long as the leak current flows, and the resistance value is rapidly increased while maintaining the thermal response element 5 in the reverse warp state, so that the current is a path between the fixed contact 21 and the movable contact 41 There is only a slight leakage current as described above (constituting a self-holding circuit). This leakage current can be dedicated to other functions of the safety device.

  When the overcharge state is released or the abnormal state is removed, the heat generation of the PTC thermistor 6 is also absorbed, and the thermally responsive element 5 returns to the return temperature and restores the original initial shape. Then, the elastic contact of the elastic portion 43 of the movable piece 4 causes the movable contact 41 and the fixed contact 21 to come in contact again, the circuit is released from the blocking state, and returns to the conductive state shown in FIG.

  The heat insulation space 16 has a first heat insulation space 161. The first heat insulating space 161 is formed between the end face 75 in the longitudinal direction of the case 7 and the end face 76 in the lateral direction (see FIG. 1) and the first cover 13. The first heat insulation space 161 may be formed between the top surface 77 of the case 7 (the outer surface of the lid member 81) and the first cover 13.

  The first adiabatic space 161 prevents the heat generated at the feed terminal of the circuit board 12 from being conducted to the first cover 13 through the case 7 of the breaker 1. As a result, the heat generated at the feeding terminal 11A is suppressed from being released to the outside of the connector 10 through the case 7 and the first cover 13, and the breaker 1 responds sensitively to over current and overheating, It is possible to protect the device quickly.

  The adiabatic space 16 has a second adiabatic space 162. The second heat insulating space 162 is formed between the terminals 22 and 32 and the first cover 13. The second heat insulation space 162 overlaps a part of the first heat insulation space 161.

  The second adiabatic space 162 prevents the heat generated at the feed terminal of the circuit board 12 from being conducted to the first cover 13 through the terminals 22 and 32 of the breaker 1. As a result, the heat generated at the feed terminal 11A is suppressed from being released to the outside of the connector 10 through the terminals 22 and 32 and the first cover 13, and the breaker 1 responds sensitively to overcurrent and overheating. , It is possible to protect the electrical equipment quickly.

  As shown in FIG. 2, an insulator 17 made of synthetic resin or the like is filled on the outside of the first cover 13 and the circuit board 12. As a resin material used for the insulator 17, a resin material suitable for flame retardancy, for example, a resin material of V-0 grade or higher according to UL (Underwriters Laboratories, Inc) 94 standard is preferable.

  In the insulator 17, for example, the circuit board 12 on which the breaker 1 is mounted and the first cover 13 is attached to the outside of the breaker 1 is loaded (inserted) into the mold, and the resin material is injected into the cavity space and cured. Molded by Thus, the breaker 1, the first cover 13 and the circuit board 12 are embedded in the insulator 17 and supported by the insulator 17.

  In the molding process of the insulator 17 described above, excessive stress is applied to the circuit board 12 and the breaker 1 by the filling pressure of the resin material injected into the cavity space of the mold, and the circuit board 12 and the breaker 1 are warped. Deformation may occur. Such warpage deformation may affect the operating temperature when the breaker 1 cuts off the current, or the recovery temperature when it returns to the conductive state.

  In the present embodiment, the first cover 13 protects the circuit board 12 and the breaker 1 from the filling pressure of the resin material constituting the insulator 17. Thereby, stress applied to the circuit board 12 and the case 7 of the breaker 1 at the time of injection molding of the insulator 17 is reduced, deformation of the case 7 is suppressed, and the operating temperature and the return temperature are properly maintained.

  The first cover 13 is provided with a protrusion 13 b protruding from the recess 13 a. The convex portion 13 b is formed to protrude, for example, in the shape of a protrusion, a rib, or a claw. When the first cover 13 is attached to the breaker 1, the convex portion 13 b abuts on the end surface 75 in the longitudinal direction of the case 7 and / or the end surface 76 in the lateral direction. Thereby, the first cover 13 is accurately positioned with respect to the breaker 1. Further, since the positional deviation of the first cover 13 is suppressed at the time of injection molding of the insulator 17, the breaker 1 can be reliably protected by the first cover 13.

  A plate-like metal may be embedded in the first cover 13. The metal is embedded by insert molding, for example, at the time of injection molding of the first cover 13. The strength and rigidity of the first cover 13 are enhanced by the metal and the protective effect of the breaker 1 is further enhanced.

  A metal frame 18 is provided on the outside of the insulator 17. For example, it can be formed by press-forming a metal plate such as stainless steel. The metal frame 18 is preferably covered all around the insulator 17, but may be disposed on any one of the front surface, the side surface, and the back surface. The conductive pattern forming the feed line 11 and the metal frame 18 are insulated by the insulator 17.

  The metal frame 18 further enhances the rigidity and strength of the connector 10. Further, a so-called electromagnetic shield is constituted by the metal frame 18, and an electromagnetic shielding effect can be obtained. As a result, noise mixed in the signal transmission line 14 is reduced, and high-speed communication becomes possible.

  Outside the insulator 17 and the metal frame 18, a second cover 19 made of insulating synthetic resin or the like is provided. The second cover 19 constitutes an outer shell of the connector 10. The second cover 19 of the present embodiment includes a main body portion 19a and a front portion 19b. The main body portion 19 a covers the outer periphery of the metal frame 18 and the rear portion (the side of the cable 50) of the insulator 17. The front portion 19 b covers the front portion of the insulator 17 (the side of the feed terminal 11 A). The tip of the circuit board 12 protrudes from the front portion 19 b and is configured to be connectable to the receptacle connector 60.

  In addition, in the connector 10 of this embodiment, the metal frame 18 and the 2nd cover 19 may be abbreviate | omitted.

  FIG. 6 shows the configuration of a connector 10A which is a modification of the connector 10 shown in FIG. The configuration of the connector 10 described above can be employed for portions of the connector 10A that are not described below.

  In the connector 10A, the circuit board 12 has a hole 12B for receiving a part of the breaker 1. Although the hole 12B of the present embodiment penetrates the circuit board 12 in the thickness direction, the hole 12B may have a bottomed form.

  The lower part of the case 7 of the breaker 1 is accommodated in the hole 12B. Along with this, a first heat insulation space 161 is formed between the first cover 13 and the lid member 81 of the breaker 1, and the heat generated at the power supply terminal 11A passes through the case 7, the terminals 22, 32 and the first cover 13. It is further suppressed that the connector 10A is released to the outside.

  FIG. 7 shows the configuration of a connector 10B which is another modification of the connector 10 shown in FIG. The configuration of the connector 10 described above can be employed for portions of the connector 10B which are not described below.

  In the connector 10B, the insulator 17 around the first cover 13 and the breaker 1 is omitted. Along with this, a large adiabatic space 16 is formed between the first cover 13 and the breaker 1, and the heat generated at the feed terminal 11A is released to the outside of the connector 10B through the case 7 and the terminals 22 and 32. Is further suppressed.

  In the connector 10B, the metal frame 18 may be omitted. Further, the circuit board 12 may be formed with a hole 12 </ b> B for accommodating a part of the breaker 1.

  The present invention is not limited to the configuration of the above embodiment, but at least in the connector 10 provided with the power supply terminal 11A for supplying DC power to the connection destination and the circuit board 12 on which the power supply terminal 11A is formed. The substrate 12 is provided with a breaker 1 for interrupting the current in response to a temperature change, and further includes a cover 13 or 19 covering the breaker 1, and an adiabatic space 16 is provided between the breaker 1 and the cover 13 or 19. It should just be formed.

  Moreover, the connector 10 etc. of this invention are applicable also to a terminal conversion adapter. The terminal conversion adapter may have a form in which the cable 50 is omitted from the above form, in addition to the form in which the connector 10 and the like are provided at the tip of the cable 50. A plurality of connectors 10 and the like corresponding to the terminal conversion adapter are disposed at both ends of the terminal conversion adapter, the breaker 1 is provided between the connectors 10 and the like, and the terminal conversion adapter is a cover 13 covering the breaker 1 or 19 is further provided.

Claims (9)

A connector comprising: a feeding terminal for supplying DC power to a connection destination; and a circuit board on which the feeding terminal is formed,
The circuit board is provided with a breaker for interrupting the current in response to a temperature change,
And a cover covering the breaker.
A thermal insulation space is formed between the breaker and the cover. The breaker is
A fixed piece having a fixed contact,
A movable piece having a movable contact at a tip end thereof and pressing the movable contact against the fixed contact to make contact with the fixed contact;
A thermally responsive element that operates the movable piece such that the movable contact is separated from the fixed contact by being deformed according to a temperature change;
And a case for housing the fixed piece, the movable piece and the thermally responsive element,
The connector according to claim 1, wherein a first heat insulation space is formed between the case and the cover. The fixed piece and the movable piece have a terminal that protrudes outside the case and is joined to a land of the circuit board,
The connector according to claim 2, wherein a second heat insulation space is formed between the terminal and the cover.   The connector according to claim 2, wherein the cover includes a first cover that abuts on the case.   The connector according to claim 4, further comprising an insulator filled on the outside of the first cover.   The connector according to claim 5, further comprising a metal frame covering an outer side of the insulator.   The connector according to any one of claims 1 to 6, wherein the cover includes a second cover that constitutes an outer shell of the connector.   A cable comprising the connector according to any one of claims 1 to 7.   A terminal conversion adapter comprising the connector according to any one of claims 1 to 8.

Images