WO2014109287A1 - Induction heater and induction heating cooker - Google Patents

Induction heater and induction heating cooker Download PDF

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Publication number
WO2014109287A1
WO2014109287A1 PCT/JP2014/000041 JP2014000041W WO2014109287A1 WO 2014109287 A1 WO2014109287 A1 WO 2014109287A1 JP 2014000041 W JP2014000041 W JP 2014000041W WO 2014109287 A1 WO2014109287 A1 WO 2014109287A1
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WO
WIPO (PCT)
Prior art keywords
coil
connection terminal
wire
coil connection
induction heating
Prior art date
Application number
PCT/JP2014/000041
Other languages
French (fr)
Japanese (ja)
Inventor
桑村　博志
範明 渡邉
和彦 武中
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to CN201480001124.XA priority Critical patent/CN105309042B/en
Priority to JP2014537415A priority patent/JPWO2014109287A1/en
Priority to EP14737674.3A priority patent/EP2945464A4/en
Publication of WO2014109287A1 publication Critical patent/WO2014109287A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H01R4/625—Soldered or welded connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/023—Soldered or welded connections between cables or wires and terminals

Definitions

  • the present invention relates to an induction heating body used as a heating source and an induction heating cooker having the induction heating body.
  • an induction heating body used as a heating source for an induction heating cooker for home use has a heating coil for generating a high-frequency magnetic field.
  • a control unit that supplies a high-frequency current is electrically connected to the end of the coil wire of the heating coil.
  • the some strand which comprises the coil wire of a heating coil is joined with respect to the connecting terminal electrically connected to the control unit.
  • Patent Documents 1 and 2 disclose a method of joining a plurality of strands and connection terminals.
  • Patent Document 1 discloses a method of joining a plurality of strands made of aluminum or aluminum alloy and connection terminals made of copper or stainless steel by TIG (Tungsten Inert Gas) welding.
  • the connection terminal includes a cylindrical portion.
  • a plurality of strands and an additive metal piece such as silver or silicon for improving brittleness and increasing the strength of the joint are accommodated in the cylindrical portion of the connection terminal.
  • Patent Document 2 discloses a method of ultrasonic welding a core wire made by twisting a plurality of aluminum wires and a metal terminal made of a material different from aluminum. Specifically, the portion of the core wire covered with insulation is caulked and fixed to a metal terminal. Next, a plurality of uncoated wires are placed on the portion of the metal terminal disposed on the anvil, and high-frequency vibration is applied while pressing the plurality of strands against the metal terminal with a welding horn. Thereby, a core wire and a metal terminal are joined.
  • the joining method described in Patent Document 1 is largely based on the added metal. That is, depending on the material of the strands and connection terminals, the effect of improving brittleness by the added metal may be poor. For this reason, depending on the combination of the strand, the connection terminal, and the additive metal, cracks or peeling may occur at the junction (boundary) between the strand and the connection terminal. In addition, cracks and separation may occur at the boundary between the portion where the strand is melted and the portion where the strand is not melted.
  • the present invention is used in an induction heating cooker or the like, and in an induction heating body including a heating coil to which current is supplied, the coil wire of the heating coil and a connection terminal for supplying current to the heating coil. It is an object to ensure high reliability of bonding.
  • the present invention is configured as follows.
  • the induction heating body includes a heating coil, and the coil wire of the heating coil is configured by at least one element wire, A coil connecting terminal for electrically connecting to a control unit for supplying a current to the heating coil, comprising a groove portion capable of accommodating a strand at an end of the coil wire; A lid that can be at least partially disposed in the groove of the coil connection terminal so as to cover the wire of the coil wire housed in the groove of the coil connection terminal; By performing welding while pressing the element wire accommodated in the groove part of the coil connection terminal while the lid body in a state of being arranged in the groove part, the element wire and the coil connection terminal And an induction heating body in which the lid bodies are joined to each other.
  • an induction heating cooker having the induction heating body and a control unit.
  • an induction heating body including a heating coil to which a current is supplied, high reliability is ensured for the connection between the coil wire of the heating coil and a coil connection terminal for supplying a current to the heating coil. can do.
  • Sectional drawing of the junction part of the terminal of the coil wire of a heating coil, and the connection terminal for coils in the induction heating body which concerns on Embodiment 3 of this invention The figure for demonstrating the connection terminal for coils in the induction heating body which concerns on Embodiment 4 of this invention
  • the partial perspective view of the induction heating body which concerns on Embodiment 5 of this invention The partial perspective view of the induction heating body which concerns on Embodiment 6 of this invention
  • the further perspective view which shows the junction part of the terminal of the coil wire of a heating coil, and the connection terminal for coils based on Embodiment 6 of this invention
  • One aspect of the present invention is an induction heating body that includes a heating coil, and the coil wire of the heating coil is configured by at least one element wire, and includes a groove portion that can accommodate the element wire at the end of the coil wire.
  • a coil connection terminal for electrical connection to a control unit for supplying current to the heating coil, and a coil connection terminal so as to cover the coil wire housed in the groove of the coil connection terminal.
  • a lid that can be at least partially disposed in the groove, and welding is performed while pressing the element wire accommodated in the groove of the coil connection terminal while the lid disposed in the groove is pressed.
  • an induction heating body including a heating coil to which an electric current is supplied
  • high reliability is obtained with respect to the connection between the coil wire of the heating coil and a coil connection terminal for supplying an electric current to the heating coil.
  • Sex can be secured.
  • the cross section of the groove portion of the coil connection terminal has a shape in which the groove width is larger than the groove depth.
  • the number of the strands which contact the connection terminal for coils and a cover body increases. Therefore, a plurality of strands are easily melted in a short time, whereby the plurality of strands are more integrated and the melted strands come into contact with the coil connection terminal and the lid body with a wide contact area. Can do. As a result, higher reliability can be obtained for the joining of the coil wire and the coil connection terminal.
  • the coil connection terminal and the lid body may be made of the same material, and may be made of a material different from the material of the coil wire of the heating coil.
  • the coil connection terminal and the lid are integrated, and the difference in specific resistance between them becomes zero.
  • the coil connection terminal and the lid may be made of the same material as the material of the coil wire of the heating coil. Thereby, the difference of the specific resistance among the connection terminal for coils, the strand of a coil wire, and a cover body becomes zero. As a result, it is possible to further suppress abnormal heat generation that may occur due to the flow of current, and to obtain even higher reliability with respect to the bonding between the coil wire and the coil connection terminal.
  • a substrate having a wiring pattern for electrically connecting the coil connection terminal and the unit connection terminal is mounted on the induction heating body, the coil connection terminal and the unit connection terminal electrically connected to the control unit being mounted. May have.
  • the induction heating body has a substrate holder portion on which the substrate is placed, the coil connection terminal is mounted on the substrate so that the groove portion is removed from the substrate, and the groove portion of the coil connection terminal is the substrate holder.
  • the substrate may be placed on the substrate holder part so as to be detached from the part. Thereby, when performing ultrasonic welding, an anvil can be contact
  • the coil connection terminal is connected to one end of the coil wire of the heating coil, and the second coil is connected to the other end of the coil wire of the heating coil.
  • the board may include a first board on which the first coil connection terminal is mounted and a second board on which the second coil connection terminal is mounted.
  • the lid is made of the same material as the material of the coil wire of the heating coil, and the control unit contacts the coil connection terminal to supply current to the coil connection terminal.
  • the coil connection terminal joins at least two kinds of materials including a first material identical to the material of the coil wire of the heating coil and a second material identical to the material of the current supply terminal. It may be produced from a clad material configured as described above.
  • the wire of the coil wire of the heating coil is joined to the groove portion of the coil connection terminal made from the first material, and the current supply terminal is connected to the portion of the coil connection terminal made from the second material. May be.
  • the induction heating body includes an engagement portion in which the coil connection terminal and the lid are engaged with each other, and the engagement portion of the coil connection terminal and the engagement portion of the lid are in contact with the groove of the coil connection terminal. It may be configured to position the lid. Thereby, the groove part of the connection terminal for coils, the strand of the coil wire accommodated in the groove part, and a cover body can be joined stably.
  • Another aspect of the present invention is an induction heating cooker, and the induction heating cooker includes the induction heating body and a control unit.
  • the induction heating cooker can have high reliability.
  • FIG. 1 is a partial perspective view of the induction heating body according to Embodiment 1 of the present invention.
  • the induction heating body 1 is used as a heating source such as a home induction heating cooker.
  • the induction heating body 1 is bonded to the resin coil base 2, the heating coil 3 that is placed and fixed on the coil base 2, and generates a magnetic field, and the ends 4 and 5 of the coil wire of the heating coil 3.
  • Coil connection terminals 6 and 7 are provided.
  • the heating coil 3 is composed of, for example, a coil wire produced by twisting a plurality of strands made of aluminum or an aluminum alloy and coating the plurality of strands thus twisted with an insulating material (for example, insulating enamel).
  • the element wire of the heating coil 3 may be made of a material other than aluminum or an aluminum alloy, such as copper.
  • One end 4 of the coil wire of the heating coil 3 is joined to one coil connection terminal 6.
  • the other end 5 of the coil wire is joined to the other coil connection terminal 7.
  • the coil connection terminals 6 and 7 are fixed to a terminal holder portion 8 formed integrally with the outside of the coil base 2.
  • the coil connection terminals 6 and 7 fixed to the terminal holder portion 8 are located outside the heating coil 3 placed on the coil base 2. Since one end 4 and the other end 5 of the coil wire of the heating coil 3 are joined to the coil connection terminals 6, 7, the coil wire passes through the coil base 2 downward and toward the terminal holder portion 8. It is extended.
  • FIG. 2 is a partial perspective view of the induction heating body 1 according to the first embodiment, and shows a joint portion between one end 4 of the coil wire of the heating coil 3 and one connection terminal 6 for the coil. ing.
  • One coil connection terminal 6 and the other coil connection terminal 7 are substantially the same in shape, and the joining method to the coil wire is the same. Therefore, only the connection between one coil connection terminal 6 and one end 4 of the coil wire will be described.
  • the coil connection terminal 6 is manufactured by press-cutting a thin plate member into a predetermined shape and partially bending it.
  • the coil connection terminal 6 includes a main body portion 6a and two wall portions 6b erected in parallel with each other from the main body portion 6a.
  • the coil connection terminal 6 includes a groove 6c defined by the main body 6a and the two walls 6b.
  • the groove part of the connection terminal for coils which concerns on embodiment of this invention is not restricted to the form demarcated by the two wall parts standingly arranged from a main-body part and this main-body part.
  • FIG. 3 shows the wire 4a (5a) and the coil connection terminal at the terminal end 4 (5) of the coil wire of the heating coil 3, as viewed in the extending direction of the groove 6c (7c) of the coil connection terminal 6 (7). 6 (7) groove portion 6c (7c).
  • FIG. 3 shows a state immediately before the wire 4a (5a) and the coil connection terminal 6 (7) are joined.
  • the plurality of strands 4a (5a) at the end 4 (5) of the coil wire of the heating coil 3 are accommodated in the groove 6c (7c) of the coil connection terminal 6 (7).
  • the end 4 (5) of the coil wire is in a state where the insulating material is removed (that is, in a state where it is not covered), and the plurality of strands 4a (5a) are exposed to the outside.
  • the exposed plurality of strands 4a (5a) are accommodated in the groove 6c (7c) of the connection terminal 6 (7).
  • the lid 9 (10) is covered.
  • the lid 9 (10) is a plate-like member as shown in FIGS. 1 and 2, and as shown in FIG. 3, the groove 6c (7c) of the coil connection terminal 6 (7). It has a shape that can be at least partially disposed therein. That is, the lid body 9 (10) has a shape that contacts the coil connection terminal 6 (7) and also contacts the plurality of strands 4a (5a) accommodated in the groove 6c (7c).
  • the lid 9 (10), the plurality of strands 4a (5a) at the end 4 (5) of the coil wire of the heating coil 3, and the coil connection terminal 6 (7) are joined to each other.
  • the lid 9 (10), the plurality of strands 4a (5a), and the coil connection terminals 6 (7) are joined by welding, for example, ultrasonic welding.
  • welding is performed according to the following procedure.
  • a plurality of strands 4a (5a) at the end 4 (5) of the coil wire of the heating coil 3 are accommodated in the groove 6c (7c) of the coil connection terminal 6 (7), and the accommodated strand 4a.
  • the lid 9 (10) is partially disposed in the groove 6c (7c) so as to cover (5a).
  • the anvil 11 is applied to the coil connection terminal 6 (7) from below and the ultrasonic welding horn 12 is applied to the lid 9 (10) from above, so that the lid 9 ( 10)
  • the plurality of strands 4a (5a) of the coil wire of the heating coil 3 and the groove 6c (7c) of the coil connection terminal 6 (7) are sandwiched by the anvil 11 and the ultrasonic welding horn 12.
  • the plurality of strands 4a (5a) are pressed toward the back of the groove 6c (7c) by the lid 9 (10).
  • the plurality of strands 4a (5a) in the groove 6c (7c) of the coil connection terminal 6 (7) are as dense as possible, and as many strands 4a (5a) as possible are connected to the coil.
  • the ultrasonic welding horn 12 vibrates ultrasonically while the lid 9 (10) presses the wire 4a (5a) of the coil wires of the plurality of heating coils 3 by the movement of the ultrasonic welding horn 12. .
  • the plurality of strands 4 a (5 a) surrounded by the coil connection terminals 6 (7) and the lid body 9 (10) are melted, whereby the lid body 9 (10) is melted. It moves to the back of the groove 6c (7c) of the coil connection terminal 6 (7).
  • the plurality of strands 4a (5a) housed in the groove 6c (7c) of the coil connection terminal 6 (7) are melted and integrated, and the coil It joins to the connection terminal 6 (7) and the lid 9 (10). Also, the coil connection terminal 6 (7) and the lid 9 (10) are joined. As a result, a joint portion 13 is formed in which the plurality of strands 4a (5a), the groove portions 6c (7c) of the coil connection terminals 6 (7), and the lid body 9 (10) are joined together and integrally.
  • the ends 4 and 5 of the coil wire of the heating coil 3 and the coil connection terminals 6 and 7 are joined by placing the heating coil 3 on the coil base 2 and connecting the coil connection terminals 6 and 7 to the terminal holder portion 8. It may be executed after being placed on top, or may be executed before being placed. Alternatively, the heating coil 3 is placed on the coil base 2, but the coil connection terminals 6 and 7 are not placed on the terminal holder portion 8, and the coil ends 4 and 5 are connected to the coil. Bonding of the terminals 6 and 7 may be performed.
  • the joining of the terminal ends 4 and 5 of the coil wire of the heating coil 3 and the connection terminals for coils 6 and 7 is not limited to ultrasonic welding.
  • resistance welding, TIG welding, or the like may be used. That is, it is possible to weld a plurality of the strands 4a and 5a at the terminal ends 4 and 5 of the coil wire, the coil connection terminals 6 and 7 (the groove portion 6c (7c)), and the lids 9 and 10 to each other. That's fine.
  • the coil wire of the heating coil 3 is composed of a single strand, it is possible to join the single strand to the groove of the coil connection terminal in the same manner as a plurality of strands. It is. That is, there is at least one element wire of the coil wire according to the embodiment of the present invention.
  • a crimp terminal 15 as a current supply terminal is connected to each of the coil connection terminals 6 and 7 joined to the ends 4 and 5 of the coil wire of the heating coil 3.
  • the screw 16 inserted into the through hole of the crimp terminal 15 is engaged with the screw portions 6d and 7d formed on the connection terminals 6 and 7, respectively (see FIG. 2), the crimp terminal 15 becomes the coil connection terminal. 6 and 7 are connected to each other.
  • lead wires 17 and 18 extending from a control unit (not shown) of the induction heating cooker are attached to the crimp terminals 15 connected to the coil connection terminals 7 and 8, respectively.
  • the lead wires 17 and 18 are caulked and joined to the crimp terminal 15.
  • the lead wires 17 and 18 of the control unit are lead wires for supplying a high frequency current to the heating coil 3.
  • the control unit includes the heating coils 3 through the lead wires 17 and 18, the crimp terminals 15, the coil connection terminals 6 and 7, and the plurality of wires 4 a and 5 a in the grooves 6 c (7 c) of the coil connection terminals 6 and 7. A high frequency current is supplied.
  • an induction heating body 1 including a heating coil 3 that is used in an induction heating cooker or the like and is supplied with a current a current is supplied to the coil wire of the heating coil 3 and the heating coil 3. Therefore, high reliability can be ensured for the connection with the coil connection terminals 6 and 7.
  • the plurality of strands 4a (5a) of the coil wire of the heating coil 3 housed in the groove 6c (7c) of the coil connection terminal 6 (7) are welded. Since the inside is covered and contacted by the coil connection terminal 6 (7) and the lid 9 (10), it is easily melted uniformly. Thereby, after the strand 4a (5a) is integrated, it is suppressed that the part which the strand does not melt
  • the lid 9 (10) can be stably contacted with a wide contact area.
  • the contact resistance between the wire 4a (5a) (that is, the coil wire) and the coil connection terminal 6 (7) and the lid 9 (10) approaches zero as much as possible, and variation in contact resistance is suppressed. be able to.
  • high reliability can be obtained for the joining of the coil wire of the heating coil and the coil connection terminal for supplying current to the heating coil.
  • the coil connection terminal 6 (7) while securing the element wire 4a (5a) of the heating coil 3 accommodated in the groove 6c (7c) of the coil connection terminal 6 (7) in a short time and with higher reliability.
  • the cross section of the groove 6c (7c) of the coil connection terminal 6 (7) (cross section orthogonal to the extending direction) has a shape having a larger groove width than the groove depth. . Thereby, the number of the strand 4a (5a) which contacts the connection terminal 6 (7) for coils and the cover body 9 (10) increases.
  • the plurality of strands 4a (5a) are more easily melted, whereby the plurality of strands 4a (5a) are more integrated, and the melted strand 4a (5a) has a wider contact area. It can contact with respect to the coil connection terminal 6 (7) and the lid 9 (10).
  • the cross-sectional shape of the groove 6c (7c) of the coil connection terminal 6 (7) is not limited to a rectangle that is long in the groove width direction as shown in FIG. 3, and the groove 6c (7c) is a plurality of coil wires. 4a (5a) can be accommodated, and the plurality of strands 4a (5a) need only have a shape that allows more contact with the coil connection terminals 6 (7) and the lid body 9 (10).
  • FIG. 5 is a cross-sectional view of a joint portion between the terminal end of the coil wire and the coil connection terminal in the dielectric heating body according to the second embodiment.
  • the same components as those in the first embodiment are denoted by the same reference numerals.
  • the coil connection terminal 26 (27) and the lid 29 (30) of the second embodiment have the same shape as the coil connection terminal 6 (7) and the lid 9 (10) of the first embodiment. .
  • the materials of the coil connection terminal 6 (7) and the lid 9 (10) of the first embodiment are different from each other, and the wire 4 a (5 a) of the coil wire of the heating coil 3. Different from the material.
  • the material of the coil connection terminal 26 (27) and the lid 29 (30) of the second embodiment is the same, and is different from the material of the coil wire 4a (5a).
  • the coil connection terminal 26 (27) and the lid 29 (30) are made of stainless steel or phosphor bronze unlike the coil wire 4a (5a) made of aluminum or an aluminum alloy.
  • the coil connection terminal 26 (27) and the lid 29 (30) made of the same material are integrated. Thereby, the difference in specific resistance between the coil connection terminal 26 (27) and the lid 29 (30) becomes zero. As a result, it is possible to further suppress abnormal heat generation that may be caused by a high current flowing. Therefore, higher reliability can be obtained with respect to the bonding between the coil wire of the heating coil and the coil connection terminal for supplying current to the heating coil.
  • FIG. 6 is a cross-sectional view of a joint portion between the terminal end of the coil wire and the coil connection terminal in the induction heating body according to the third embodiment.
  • the same components as those of the first embodiment are denoted by the same reference numerals.
  • the coil connection terminal 36 (37) and the lid 39 (40) according to the third embodiment have the same shape as the coil connection terminal 6 (7) and the lid 9 (10) according to the first embodiment. .
  • the materials of the coil connection terminal 6 (7) and the lid 9 (10) of the first embodiment are different from each other, and the wire 4 a (5 a) of the coil wire of the heating coil 3.
  • the material of the coil connection terminal 36 (37) and the lid 39 (40) of the third embodiment is the same as the material of the coil wire 4a (5a).
  • the coil connection terminal 36 (37) and the lid 39 (40) are made of aluminum or aluminum alloy which is the same material as the material of the coil wire 4a (5a).
  • the wire 4a (5a) of the coil wire of the heating coil 3 and the coil connection terminal 36 are made of the same material. (37) and the lid 39 (40) are integrated. Thereby, the difference in specific resistance among the three parties becomes zero. As a result, it is possible to further suppress abnormal heat generation that may occur due to a high current flowing. Therefore, even higher reliability can be obtained for the joining of the coil wire of the heating coil and the coil connection terminal for supplying current to the heating coil.
  • FIG. 7 schematically shows the coil connection terminal 46 of the induction heating body according to the fourth embodiment.
  • the same components as those in the first embodiment are denoted by the same reference numerals.
  • the coil connection terminals 6 and 7 of the first embodiment are manufactured by press-cutting a thin plate member into a predetermined shape and partially bending it, that is, one kind of material. It is made from.
  • the coil connection terminal 46 according to the fourth embodiment is made of a clad material formed by joining at least two materials as shown in FIG.
  • the coil connection terminal 46 is formed of the same material (first material) as the material of the wire 4a of the coil wire of the heating coil 3 and the crimp terminal 15 connected to the control unit (not shown).
  • the clad material is formed by joining the same material (second material) as the material.
  • the coil connection terminal 46 is made of a first member 46 a made of aluminum which is a material of the wire 4 a of the coil wire of the heating coil 3 and stainless steel or phosphor bronze which is a material of the crimp terminal 15.
  • the clad material is formed by joining the second member 46b.
  • the groove 46c joined to the wire 4a of the coil wire of the heating coil 3 is formed in the first member 46.
  • the lid 9 disposed in the groove 46c is made of the same material as the material of the wire 4a and the first member 46a, for example, aluminum.
  • joining with the strand 4a, the groove part 46c, and the cover body 9 is performed like the above-mentioned Embodiment 1.
  • the screw part 46d with which the screw 16 that has passed through the through hole of the crimp terminal 15 engages is formed in the second member 46b.
  • a washer 50 is interposed between the crimp terminal 15 and the second member 46b.
  • the material of the second member 46b needs to be the same as that of the crimp terminal 15, the screw 16, and the washer 50 as long as the difference in ionization tendency and the potential difference are small and the specific resistance is small. There is no.
  • the joining between the wire 4 a of the coil wire of the heating coil 3 and the coil connection terminal 46 generates abnormal heat generation. It can be suppressed and has high reliability.
  • the difference in specific resistance among the second member 46b, the crimp terminal 15, the screw 16, and the washer 50 of the coil connection terminal 46 is made zero. For this reason, even when a high current flows, abnormal heat generation hardly occurs. Further, the occurrence of electrolytic corrosion is suppressed at the contact portion between the crimp terminal 15 and the coil connection terminal 46. As a result, the connection between the coil connection terminal 46 and the crimp terminal 15 has high reliability.
  • FIG. 8 is a partial perspective view of the induction heating body according to the fifth embodiment.
  • the same components as those in the first embodiment are denoted by the same reference numerals.
  • the induction heating body 51 has a substrate 52.
  • the substrate 52 is placed and fixed on a substrate holder 53 formed integrally with the coil base 2.
  • the substrate 52 is joined to one end 4 of the coil wire of the heating coil 3 (specifically, joined to a plurality of strands at the end 4) and to the other end 5 ( Specifically, a coil connection terminal 55 (which is joined to a plurality of strands at the end 5) is mounted.
  • the substrate 52 is electrically connected to the crimp terminals 15 attached to the lead wires 17 and 18 of a control unit (not shown) for supplying a current to the heating coil 3. Is installed.
  • the board 52 has a wiring pattern (not shown) for electrically connecting one coil connection terminal 54 and one unit connection terminal 56, and the other coil connection terminal 55 and the other unit connection.
  • a wiring pattern (not shown) such as a copper pattern is provided to electrically connect the terminal 57.
  • the coil connection terminals 54 and 55 mounted on the substrate 52 are groove portions for accommodating the strands at the ends 4 and 5 of the coil wire of the heating coil 3, similarly to the coil connection terminals 6 and 7 of the first embodiment. 54c and 55c.
  • lids 58 and 59 similar to the lids 9 and 10 of the first embodiment are disposed in the groove portions 54c and 55c.
  • the coil connection terminals 54 and 55 mounted on the substrate 52, the plurality of strands of the coil wire of the heating coil 3 accommodated in the grooves 54c and 55c, and the lids 58 and 59 are the same as those in the first embodiment.
  • the coil connection terminals 6 and 7, the plurality of strands 4 a and 5 a accommodated in the grooves 6 c and 7 c, and the lids 9 and 10 are joined together by welding.
  • the ends 4 and 5 of the coil wire of the heating coil 3 and the coil connection terminals 54 and 55 are joined by placing the heating coil 3 on the coil base 2 and the substrate 52 on the substrate holder 53. It may be executed after or after placement. Alternatively, the heating coil 3 is placed on the coil base 2, but the substrate 52 is not placed on the substrate holder 53, and the ends 4 and 5 of the coil wires and the coil connection terminals 54 and 55 are connected. Bonding may be performed.
  • the crimp terminals 15 attached to the lead wires 17 and 18 of the control unit are connected to the unit connection terminals 56 and 57 mounted on the substrate 52 by, for example, screws.
  • the control unit includes lead wires 17 and 18, crimp terminals 15, unit connection terminals 56 and 57, a wiring pattern of the substrate 52, coil connection terminals 54 and 55, and groove portions 54 c and 55 c of the coil connection terminals 54 and 55.
  • a high frequency current is supplied to the heating coil 3 through a plurality of strands.
  • the coil wire and the coil of the heating coil 3 in the first embodiment are also used. High reliability can be ensured similarly to the joining with the connection terminals 6 and 7 for use.
  • FIG. 9 is a partial perspective view of the induction heating body according to the sixth embodiment.
  • the same components as those in the fifth embodiment are denoted by the same reference numerals.
  • coil connection terminals 54 and 55 and unit connection terminals 56 and 57 are mounted on one substrate 52.
  • the coil connection terminals 54 and 55 are mounted on different separate substrates 52A and 52B.
  • the two substrates 52A and 52B are fixed to the substrate holder portion 53 with a gap 62 provided therebetween.
  • a coil connection terminal 54 and a unit connection terminal 56 are mounted on the substrate 52A.
  • the substrate 52A includes a wiring pattern (not shown) such as a copper pattern that electrically connects the coil connection terminal 54 and the unit connection terminal 56.
  • a coil connection terminal 55 and a unit connection terminal 57 are mounted on the substrate 52B.
  • the substrate 52B includes a wiring pattern (not shown) such as a copper pattern for electrically connecting the coil connection terminal 55 and the unit connection terminal 57.
  • each of the substrates 52A and 52B is more compact than the substrate 52 in the fifth embodiment, and the coil connection terminals 54 and 55 are mounted on different substrates 52A and 52B. Compared to Form 5, the assembly of the induction heating body is excellent.
  • one end 4 of the coil wire of the heating coil 3 is joined to the coil connection terminal 54 mounted on the substrate 52 A, and the substrate 52 A is fixed to the substrate holder 53. Subsequently, the other end 5 of the coil wire is joined to the coil connection terminal 54 mounted on the substrate 52 ⁇ / b> B, and the substrate 52 ⁇ / b> B is fixed to the substrate holder 53. According to such a method, assembling is easier than in the case where the substrate 52 in a state where both ends 4 and 5 of the coil wire are joined is fixed to the substrate holder portion 53.
  • FIGS. 10 and 11 are perspective views showing a joint portion between one end 4 of the coil wire of the heating coil 3 and the groove portion 54c of the one coil connection terminal 54 in the induction heating body 61 in the sixth embodiment. It is.
  • the coil connection terminal and the cover body each have an engaging portion that engages with each other.
  • the engaging portion is preferably configured to position the lid with respect to the groove portion of the coil connection terminal.
  • the lid body 58 is formed in a shape including two projecting portions 58a projecting in the width direction of the groove portion 54c of the coil connection terminal 54, that is, a “T” shape.
  • a groove 54d that engages with the protrusion 58a of the lid 58 is formed in the wall 54b that defines the groove 54c.
  • the relative position of the lid 58 with respect to the groove 54c of the coil connection terminal 54 is unambiguous. It is decided. Thereby, when joining the groove part 54c of the coil connection terminal 54, the plurality of strands of the coil wire accommodated in the groove part 54c, and the lid body 58, the lid body 58 moves in the groove part 54c. Is suppressed. As a result, the groove 54c, the plurality of strands, and the lid 58 can be stably joined.
  • each of the coil connection terminal and the lid is not limited to the groove 54d and the protrusion 58a shown in FIG.
  • the lid body 9 is provided with concave portions 9a facing each other (that is, formed in an “H” shape), and the wall portions 6b of the coil connection terminals 6 are formed in the concave portions 9a. Engage.
  • the coil connection terminal when the coil connection terminal is mounted on the substrate (in the case of the above-described fifth and sixth embodiments), the coil connection terminal is mounted on the substrate such that the groove portion is removed from the substrate. It is preferable that the connecting terminal is mounted on the substrate holder so that the groove of the connecting terminal is removed from the substrate holder.
  • the coil connection terminal 54 is mounted on the substrate 52A so that the groove 54c of the coil connection terminal 54 is detached from the substrate 52A.
  • the substrate 52A has a shape in which a portion located below the groove 54c of the coil connection terminal 54 is deleted.
  • the substrate 52A is placed on the substrate holder portion 53 so that the groove portion 54c of the coil connection terminal 54 is disengaged from above the substrate holder portion 53.
  • the substrate holder 53 has a shape in which a portion located below the groove 54c of the coil connection terminal 54 is deleted.
  • the coil connection terminal 54 is used when performing ultrasonic welding.
  • the anvil 11 can be brought into contact with the groove 54c from below. That is, the groove portion 54c of the coil connection terminal 54, the plurality of strands of the coil wire, and the lid body 58 are joined in a state where the substrate 52A on which the coil connection terminal 54 is mounted is placed on the substrate holder portion 53. Ultrasonic welding can be performed.
  • the induction heating body Since the induction heating body according to the present invention has high reliability, the induction heating body is used as a high heating source by supplying a high current to the heating coil of the induction heating body.
  • the induction heating body can be used in an induction heating cooker. It is.

Abstract

An induction heater (1) including a heating coil (3) constituted by at least one wire, the induction heater comprising: a coil connection terminal (6), having a groove (6c) capable of housing the wire (4a) at the end (4) of the coil, for electrically connecting to a control unit for supplying the heating coil (3) with currents; and a cover body (9) at least a portion of which can be arranged in the groove (6c) of the coil connection terminal (6) to cover the wire (4a) of the coil housed in the groove (6c) of the coil connection terminal (6). The wire (4a), the coil connection terminal (6), and the cover body (9) are mutually joined by welding while the cover body (9) arranged in the groove (6c) is pressing on the wire (4a) housed in the groove (6c) of the coil connection terminal (6).

Description

誘導加熱体および誘導加熱調理器Induction heating body and induction heating cooker
　本発明は、加熱源として使用される誘導加熱体および誘導加熱体を有する誘導加熱調理器に関する。 The present invention relates to an induction heating body used as a heating source and an induction heating cooker having the induction heating body.
　従来より、家庭用の誘導加熱調理器などの加熱源として使用される誘導加熱体は、高周波磁界を発生するための加熱コイルを有する。加熱コイルのコイル線の末端に、高周波電流を供給する制御ユニットが電気的に接続される。例えば、加熱コイルのコイル線を構成する複数の素線が、制御ユニットに電気的に接続されている接続端子に対して接合される。 Conventionally, an induction heating body used as a heating source for an induction heating cooker for home use has a heating coil for generating a high-frequency magnetic field. A control unit that supplies a high-frequency current is electrically connected to the end of the coil wire of the heating coil. For example, the some strand which comprises the coil wire of a heating coil is joined with respect to the connecting terminal electrically connected to the control unit.
　例えば、特許技術文献１および２は、複数の素線と接続端子とを接合する方法を開示している。 For example, Patent Documents 1 and 2 disclose a method of joining a plurality of strands and connection terminals.
　特許文献１は、アルミニウムまたはアルミニウム合金から作製された複数の素線と銅またはステンレスなどから作製された接続端子とをＴＩＧ（Ｔｕｎｇｓｔｅｎ　Ｉｎｅｒｔ　Ｇａｓ）溶接によって接合する方法を開示している。具体的には、接続端子が筒状部を備える。この接続端子の筒状部内に、複数の素線と、脆性を改善して接合部の強度を高めるための銀またはシリコンなどの添加金属片とが収容される。複数の素線と添加金属片とを接続端子の筒状に収容した状態でＴＩＧ溶接を行うことにより、複数の素線と接続端子とが接合される。 Patent Document 1 discloses a method of joining a plurality of strands made of aluminum or aluminum alloy and connection terminals made of copper or stainless steel by TIG (Tungsten Inert Gas) welding. Specifically, the connection terminal includes a cylindrical portion. A plurality of strands and an additive metal piece such as silver or silicon for improving brittleness and increasing the strength of the joint are accommodated in the cylindrical portion of the connection terminal. By performing TIG welding in a state where the plurality of strands and the additive metal piece are accommodated in a cylindrical shape of the connection terminal, the plurality of strands and the connection terminal are joined.
　特許文献２は、複数のアルミニウムの素線を撚り合わせて作製された芯線とアルミニウムと異なる材料から作製された金属端子とを超音波溶接する方法を開示している。具体的には、絶縁被覆された芯線の部分を金属端子にかしめて固定する。次に、アンビル上に配置された金属端子の部分上に被覆されていない複数の素線を載せ、そして、溶接ホーンによって複数の素線を金属端子に押し付けつつ高周波振動を与える。それにより、芯線と金属端子とが接合される。 Patent Document 2 discloses a method of ultrasonic welding a core wire made by twisting a plurality of aluminum wires and a metal terminal made of a material different from aluminum. Specifically, the portion of the core wire covered with insulation is caulked and fixed to a metal terminal. Next, a plurality of uncoated wires are placed on the portion of the metal terminal disposed on the anvil, and high-frequency vibration is applied while pressing the plurality of strands against the metal terminal with a welding horn. Thereby, a core wire and a metal terminal are joined.
特開２０１０－２５１０６７号公報JP 2010-251067 A 特開２００９－２５９７０２号公報JP 2009-259702 A
　しかしながら、特許文献１に記載の接合方法は、添加金属によるところが大きい。すなわち、素線や接続端子の材料によっては添加金属による脆性改善の効果が乏しい場合がある。そのため、素線、接続端子、および添加金属の組み合わせによっては、素線と接続端子との間の接合部（境界）でクラックや剥離が生じることがある。また、素線が溶融した部分と溶融していない部分との間の境界でもクラックや剥離が生じることがある。 However, the joining method described in Patent Document 1 is largely based on the added metal. That is, depending on the material of the strands and connection terminals, the effect of improving brittleness by the added metal may be poor. For this reason, depending on the combination of the strand, the connection terminal, and the additive metal, cracks or peeling may occur at the junction (boundary) between the strand and the connection terminal. In addition, cracks and separation may occur at the boundary between the portion where the strand is melted and the portion where the strand is not melted.
　特許文献２に記載の接合方法の場合、金属端子と接触する素線は溶融して該金属端子に接合されるが、金属端子から遠い素線は溶融しにくい。そのため、芯線と金属端子との間の接触抵抗が増加するまたは接触抵抗のバラツキが生じる。芯線と金属端子との間で大電流が流れる場合、接触抵抗の増加またはバラツキを原因として接合部が異常発熱しうる。 In the case of the joining method described in Patent Document 2, the wire that contacts the metal terminal is melted and joined to the metal terminal, but the wire far from the metal terminal is difficult to melt. For this reason, the contact resistance between the core wire and the metal terminal increases or the contact resistance varies. When a large current flows between the core wire and the metal terminal, the joint can abnormally generate heat due to an increase or variation in contact resistance.
　したがって、信頼性を考慮すると、加熱コイルのコイル線とそのコイル線に電流を供給するための接続端子との接合に、特許文献１および２に記載の接合方法を用いることはあまり好ましくない。 Therefore, in consideration of reliability, it is not preferable to use the joining method described in Patent Documents 1 and 2 for joining the coil wire of the heating coil and the connection terminal for supplying current to the coil wire.
　そこで、本発明は、誘導加熱調理器などに使用され、電流が供給される加熱コイルを備える誘導加熱体において、その加熱コイルのコイル線と、加熱コイルに電流を供給するための接続端子との接合について高い信頼性を確保することを課題とする。 Therefore, the present invention is used in an induction heating cooker or the like, and in an induction heating body including a heating coil to which current is supplied, the coil wire of the heating coil and a connection terminal for supplying current to the heating coil. It is an object to ensure high reliability of bonding.
　上記目的を達成するために、本発明は以下のように構成する。 In order to achieve the above object, the present invention is configured as follows.
　本発明の一態様によれば、加熱コイルを備え、前記加熱コイルのコイル線が少なくとも一本の素線によって構成されている誘導加熱体にあって、
　前記コイル線の末端における素線を収容可能な溝部を備え、前記加熱コイルに電流を供給する制御ユニットに電気的に接続するためのコイル用接続端子と、
　前記コイル用接続端子の溝部内に収容された前記コイル線の素線に覆いかぶさるように前記コイル接続端子の溝部内に少なくとも一部が配置可能な蓋体とを有し、
　前記コイル用接続端子の溝部内に収容された状態の素線を該溝部内に配置された状態の前記蓋体が押圧しつつ溶接が実行されることにより、前記素線、前記コイル用接続端子、および前記蓋体が互いに接合されている、誘導加熱体が提供される。 According to one aspect of the present invention, the induction heating body includes a heating coil, and the coil wire of the heating coil is configured by at least one element wire,
A coil connecting terminal for electrically connecting to a control unit for supplying a current to the heating coil, comprising a groove portion capable of accommodating a strand at an end of the coil wire;
A lid that can be at least partially disposed in the groove of the coil connection terminal so as to cover the wire of the coil wire housed in the groove of the coil connection terminal;
By performing welding while pressing the element wire accommodated in the groove part of the coil connection terminal while the lid body in a state of being arranged in the groove part, the element wire and the coil connection terminal And an induction heating body in which the lid bodies are joined to each other.
　本発明の別態様によれば、前記誘導加熱体および制御ユニットを有する、誘導加熱調理器が提供される。 According to another aspect of the present invention, there is provided an induction heating cooker having the induction heating body and a control unit.
　本発明によれば、電流が供給される加熱コイルを備える誘導加熱体において、その加熱コイルのコイル線と、加熱コイルに電流を供給するためのコイル用接続端子との接合について高い信頼性を確保することができる。 According to the present invention, in an induction heating body including a heating coil to which a current is supplied, high reliability is ensured for the connection between the coil wire of the heating coil and a coil connection terminal for supplying a current to the heating coil. can do.
　本発明のこれらの態様と特徴は、添付された図面についての好ましい実施の形態に関連した次の記述から明らかになる。この図面においては、
本発明の実施の形態１に係る誘導加熱体の部分的斜視図 加熱コイルのコイル線の末端とコイル用接続端子との接合部を示す斜視図 加熱コイルのコイル線の末端における素線とコイル用接続端子とが接合される前の様子を示す断面図 加熱コイルのコイル線の末端における素線とコイル用接続端子とを接合した後、すなわちコイル線の末端とコイル用接続端子との接合部の断面図 本発明の実施の形態２に係る誘導加熱体における、加熱コイルのコイル線の末端とコイル用接続端子との接合部の断面図 本発明の実施の形態３に係る誘導加熱体における、加熱コイルのコイル線の末端とコイル用接続端子との接合部の断面図 本発明の実施の形態４に係る誘導加熱体におけるコイル用接続端子を説明するための図 本発明の実施の形態５に係る誘導加熱体の部分的斜視図 本発明の実施の形態６に係る誘導加熱体の部分的斜視図 本発明の実施の形態６に係る、加熱コイルのコイル線の末端とコイル用接続端子との接合部を示す斜視図 本発明の実施の形態６に係る、加熱コイルのコイル線の末端とコイル用接続端子との接合部を示すさらなる斜視図 These aspects and features of the present invention will become apparent from the following description taken in conjunction with the preferred embodiments with reference to the accompanying drawings. In this drawing,
The partial perspective view of the induction heating body which concerns on Embodiment 1 of this invention The perspective view which shows the junction part of the terminal of the coil wire of a heating coil, and the connection terminal for coils Sectional drawing which shows a mode before the strand at the terminal of the coil wire of a heating coil and the connection terminal for coils are joined After joining the wire at the end of the coil wire of the heating coil and the coil connection terminal, that is, a cross-sectional view of the joint between the end of the coil wire and the coil connection terminal Sectional drawing of the junction part of the terminal of the coil wire of a heating coil, and the connection terminal for coils in the induction heating body which concerns on Embodiment 2 of this invention. Sectional drawing of the junction part of the terminal of the coil wire of a heating coil, and the connection terminal for coils in the induction heating body which concerns on Embodiment 3 of this invention. The figure for demonstrating the connection terminal for coils in the induction heating body which concerns on Embodiment 4 of this invention The partial perspective view of the induction heating body which concerns on Embodiment 5 of this invention The partial perspective view of the induction heating body which concerns on Embodiment 6 of this invention The perspective view which shows the junction part of the terminal of the coil wire of a heating coil, and the connection terminal for coils based on Embodiment 6 of this invention. The further perspective view which shows the junction part of the terminal of the coil wire of a heating coil, and the connection terminal for coils based on Embodiment 6 of this invention
　本発明の一態様は、加熱コイルを備え、加熱コイルのコイル線が少なくとも一本の素線によって構成されている誘導加熱体であって、コイル線の末端における素線を収容可能な溝部を備え、加熱コイルに電流を供給する制御ユニットに電気的に接続するためのコイル用接続端子と、コイル用接続端子の溝部内に収容されたコイル線の素線に覆いかぶさるようにコイル用接続端子の溝部内に少なくとも一部が配置可能な蓋体とを有し、コイル用接続端子の溝部内に収容された状態の素線を該溝部内に配置された状態の蓋体が押圧しつつ溶接が実行されることにより、素線、コイル用接続端子、および蓋体が互いに接合されている。 One aspect of the present invention is an induction heating body that includes a heating coil, and the coil wire of the heating coil is configured by at least one element wire, and includes a groove portion that can accommodate the element wire at the end of the coil wire. A coil connection terminal for electrical connection to a control unit for supplying current to the heating coil, and a coil connection terminal so as to cover the coil wire housed in the groove of the coil connection terminal. A lid that can be at least partially disposed in the groove, and welding is performed while pressing the element wire accommodated in the groove of the coil connection terminal while the lid disposed in the groove is pressed. By being executed, the wire, the coil connection terminal, and the lid are joined to each other.
　本発明の一態様によれば、電流が供給される加熱コイルを備える誘導加熱体において、その加熱コイルのコイル線と、加熱コイルに電流を供給するためのコイル用接続端子との接合について高い信頼性を確保することができる。 According to one aspect of the present invention, in an induction heating body including a heating coil to which an electric current is supplied, high reliability is obtained with respect to the connection between the coil wire of the heating coil and a coil connection terminal for supplying an electric current to the heating coil. Sex can be secured.
　誘導加熱体において、コイル用接続端子の溝部の断面は、溝深さに比べて溝幅が大きい形状を備えるのが好ましい。これにより、コイル用接続端子および蓋体に接触する素線の本数が増加する。そのために、複数の素線が短時間で溶融しやすくなり、それにより複数の素線がより一体化されるとともに溶融された素線が広い接触面積でコイル用接続端子および蓋体に接触することができる。その結果、コイル線とコイル用接続端子との接合についてより高い信頼性を得ることができる。 In the induction heating body, it is preferable that the cross section of the groove portion of the coil connection terminal has a shape in which the groove width is larger than the groove depth. Thereby, the number of the strands which contact the connection terminal for coils and a cover body increases. Therefore, a plurality of strands are easily melted in a short time, whereby the plurality of strands are more integrated and the melted strands come into contact with the coil connection terminal and the lid body with a wide contact area. Can do. As a result, higher reliability can be obtained for the joining of the coil wire and the coil connection terminal.
　誘導加熱体において、コイル用接続端子と蓋体が、同一の材料から作製され、且つ加熱コイルのコイル線の素線の材料と異なる材料から作製されてもよい。これにより、コイル用接続端子と蓋体とが一体化され、これらの間の固有抵抗の差がゼロになる。その結果、電流が流れることによって発生しうる異常発熱をより抑制することができ、コイル線とコイル用接続端子との接合についてより高い信頼性を得ることができる。 In the induction heating body, the coil connection terminal and the lid body may be made of the same material, and may be made of a material different from the material of the coil wire of the heating coil. Thereby, the coil connection terminal and the lid are integrated, and the difference in specific resistance between them becomes zero. As a result, it is possible to further suppress abnormal heat generation that may occur due to the flow of current, and to obtain higher reliability with respect to the bonding between the coil wire and the coil connection terminal.
　誘導加熱体において、コイル用接続端子と蓋体が、加熱コイルのコイル線の素線の材料と同一の材料から作製されてもよい。これにより、コイル用接続端子、コイル線の素線、および蓋体の間の固有抵抗の差がゼロになる。その結果、電流が流れることによって発生しうる異常発熱をさらにより抑制することができ、コイル線とコイル用接続端子との接合についてさらにより高い信頼性を得ることができる。 In the induction heating body, the coil connection terminal and the lid may be made of the same material as the material of the coil wire of the heating coil. Thereby, the difference of the specific resistance among the connection terminal for coils, the strand of a coil wire, and a cover body becomes zero. As a result, it is possible to further suppress abnormal heat generation that may occur due to the flow of current, and to obtain even higher reliability with respect to the bonding between the coil wire and the coil connection terminal.
　コイル用接続端子と、制御ユニットに電気的に接続されるユニット用接続端子とが搭載され、コイル用接続端子とユニット用接続端子とを電気的に接続する配線パターンを備える基板を、誘導加熱体が有してもよい。 A substrate having a wiring pattern for electrically connecting the coil connection terminal and the unit connection terminal is mounted on the induction heating body, the coil connection terminal and the unit connection terminal electrically connected to the control unit being mounted. May have.
　前記基板が載置される基板ホルダー部を誘導加熱体が有し、また、溝部が基板上から外れるようにコイル用接続端子が該基板に搭載され、さらに、コイル用接続端子の溝部が基板ホルダー部上から外れるように基板が該基板ホルダー部上に載置されるようにしてもよい。これにより、超音波溶接を実行するときにコイル用接続端子の溝部に対してアンビルを下方から当接させることができる。すなわち、コイル用接続端子を搭載した基板が基板ホルダー部に載置された状態で、コイル用接続端子の溝部と、コイル線の複数の素線と、蓋体とを接合するための超音波溶接を実行することができる。 The induction heating body has a substrate holder portion on which the substrate is placed, the coil connection terminal is mounted on the substrate so that the groove portion is removed from the substrate, and the groove portion of the coil connection terminal is the substrate holder. The substrate may be placed on the substrate holder part so as to be detached from the part. Thereby, when performing ultrasonic welding, an anvil can be contact | abutted from the downward direction with respect to the groove part of the connection terminal for coils. That is, ultrasonic welding for joining the groove portion of the coil connection terminal, the plurality of strands of the coil wire, and the lid body in a state where the substrate on which the coil connection terminal is mounted is placed on the substrate holder portion. Can be executed.
　誘導加熱体において、コイル用接続端子が、加熱コイルのコイル線の一方の末端と接合される第１のコイル用接続端子と、加熱コイルのコイル線の他方の末端と接合される第２のコイル用接続端子とを含み、基板が、第１のコイル用接続端子が搭載された第１の基板と、第２のコイル用接続端子が搭載された第２の基板とを含んでもよい。これにより、１つの基板に第１および第２のコイル用接続端子が搭載される場合に比べて、誘導加熱体の組み立て性が向上する。 In the induction heating body, the coil connection terminal is connected to one end of the coil wire of the heating coil, and the second coil is connected to the other end of the coil wire of the heating coil. For example, the board may include a first board on which the first coil connection terminal is mounted and a second board on which the second coil connection terminal is mounted. Thereby, the assembly property of the induction heating body is improved as compared with the case where the first and second coil connection terminals are mounted on one substrate.
　誘導加熱体において、蓋体が加熱コイルのコイル線の素線の材料と同一の材料から作製され、制御ユニットがコイル用接続端子と接触して該コイル用接続端子に電流を供給する電流供給端子を備え、コイル用接続端子が、加熱コイルのコイル線の素線の材料と同一の第１の材料と前記電流供給端子の材料と同一の第２の材料とを含む少なくとも２種類の材料を接合して構成されたクラッド材から作製されてもよい。また、加熱コイルのコイル線の素線が第１の材料から作製されたコイル用接続端子の溝部に接合され、電流供給端子が第２の材料から作製されたコイル用接続端子の部分に接続されてもよい。これにより、コイル用接続端子とコイル線との接合について高い信頼性を得ることができるとともに、コイル用接続端子と電流供給端子との接合についても高い信頼性を得ることができる。 In the induction heating body, the lid is made of the same material as the material of the coil wire of the heating coil, and the control unit contacts the coil connection terminal to supply current to the coil connection terminal. And the coil connection terminal joins at least two kinds of materials including a first material identical to the material of the coil wire of the heating coil and a second material identical to the material of the current supply terminal. It may be produced from a clad material configured as described above. Further, the wire of the coil wire of the heating coil is joined to the groove portion of the coil connection terminal made from the first material, and the current supply terminal is connected to the portion of the coil connection terminal made from the second material. May be. As a result, high reliability can be obtained for the connection between the coil connection terminal and the coil wire, and high reliability can also be obtained for the connection between the coil connection terminal and the current supply terminal.
　誘導加熱体において、コイル用接続端子および蓋体それぞれが互いに係合し合う係合部を備え、コイル用接続端子の係合部と蓋体の係合部がコイル用接続端子の溝部に対して蓋体を位置決めするように構成されてもよい。これにより、コイル用接続端子の溝部、溝部に収容されたコイル線の素線、および蓋体を安定して接合することができる。 The induction heating body includes an engagement portion in which the coil connection terminal and the lid are engaged with each other, and the engagement portion of the coil connection terminal and the engagement portion of the lid are in contact with the groove of the coil connection terminal. It may be configured to position the lid. Thereby, the groove part of the connection terminal for coils, the strand of the coil wire accommodated in the groove part, and a cover body can be joined stably.
　本発明の別態様は誘導加熱調理器であって、誘導加熱調理器は前記誘導加熱体および制御ユニットを有する。 Another aspect of the present invention is an induction heating cooker, and the induction heating cooker includes the induction heating body and a control unit.
　本発明の別態様によれば、誘導加熱調理器は高い信頼性を備えることができる。 According to another aspect of the present invention, the induction heating cooker can have high reliability.
　以下、本発明の複数の実施の形態について、図面を参照しながら説明する。なお、本発明は、以下の複数の実施の形態に限定されない。 Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following embodiments.
（実施の形態１）
　図１は、本発明の実施の形態１に係る誘導加熱体の部分的斜視図である。 (Embodiment 1)
FIG. 1 is a partial perspective view of the induction heating body according to Embodiment 1 of the present invention.
　図１に示す誘導加熱体１は、家庭用の誘導加熱調理器などの加熱源として使用される。誘導加熱体１は、樹脂製のコイルベース２と、コイルベース２上に載置されて固定され、磁界を発生する加熱コイル３と、加熱コイル３のコイル線の末端４、５に接合されるコイル用接続端子６、７とを有する。 1 is used as a heating source such as a home induction heating cooker. The induction heating body 1 is bonded to the resin coil base 2, the heating coil 3 that is placed and fixed on the coil base 2, and generates a magnetic field, and the ends 4 and 5 of the coil wire of the heating coil 3. Coil connection terminals 6 and 7 are provided.
　加熱コイル３は、例えば、アルミニウムまたはアルミニウム合金製の複数の素線を撚り合わせ、その撚り合わせた複数の素線を絶縁材料（例えば絶縁エナメル）で被覆することによって作製されたコイル線から構成される。なお、加熱コイル３の素線は、アルミニウムまたはアルミニウム合金以外の材料、例えば銅などから作製されてもよい。 The heating coil 3 is composed of, for example, a coil wire produced by twisting a plurality of strands made of aluminum or an aluminum alloy and coating the plurality of strands thus twisted with an insulating material (for example, insulating enamel). The The element wire of the heating coil 3 may be made of a material other than aluminum or an aluminum alloy, such as copper.
　加熱コイル３のコイル線の一方の末端４は、一方のコイル用接続端子６に接合されている。コイル線の他方の末端５は他方のコイル用接続端子７に接合されている。本実施の形態の場合、コイル用接続端子６、７は、コイルベース２の外側に一体的に形成された端子ホルダー部８に固定されている。上方から見た場合、端子ホルダー部８に固定されたコイル用接続端子６、７は、コイルベース２上に載置された加熱コイル３の外側に位置する。加熱コイル３のコイル線の一方の末端４および他方の末端５がコイル用接続端子６、７に接合されるために、コイル線は、コイルベース２を下方に貫通し、端子ホルダー部８に向かって延在している。 One end 4 of the coil wire of the heating coil 3 is joined to one coil connection terminal 6. The other end 5 of the coil wire is joined to the other coil connection terminal 7. In the case of the present embodiment, the coil connection terminals 6 and 7 are fixed to a terminal holder portion 8 formed integrally with the outside of the coil base 2. When viewed from above, the coil connection terminals 6 and 7 fixed to the terminal holder portion 8 are located outside the heating coil 3 placed on the coil base 2. Since one end 4 and the other end 5 of the coil wire of the heating coil 3 are joined to the coil connection terminals 6, 7, the coil wire passes through the coil base 2 downward and toward the terminal holder portion 8. It is extended.
　次に、加熱コイル３のコイル線の末端４、５とコイル用接続端子６、７との接合について説明する。 Next, the joining of the terminal ends 4 and 5 of the coil wire of the heating coil 3 and the connection terminals 6 and 7 for the coil will be described.
　図２は、本実施の形態１に係る誘導加熱体１の部分的斜視図であって、加熱コイル３のコイル線の一方の末端４と、一方のコイル用接続端子６との接合部を示している。なお、一方のコイル用接続端子６と他方のコイル用接続端子７は形状的には略同一であって、コイル線との接合方法は同一である。したがって、一方のコイル用接続端子６と、コイル線の一方の末端４との接合についてのみ説明する。 FIG. 2 is a partial perspective view of the induction heating body 1 according to the first embodiment, and shows a joint portion between one end 4 of the coil wire of the heating coil 3 and one connection terminal 6 for the coil. ing. One coil connection terminal 6 and the other coil connection terminal 7 are substantially the same in shape, and the joining method to the coil wire is the same. Therefore, only the connection between one coil connection terminal 6 and one end 4 of the coil wire will be described.
　図２に示すように、コイル用接続端子６は、薄板部材を所定の形状にプレスカットして部分的に折り曲げることによって作製されている。具体的には、コイル用接続端子６は、本体部６ａと、本体部６ａから互いに平行に立設する２つの壁部６ｂを備える。言い換えると、コイル用接続端子６は、本体部６ａと２つの壁部６ｂとによって画定された溝部６ｃを備える。なお、本発明の実施の形態に係るコイル用接続端子の溝部は、本体部と該本体部から立設する２つの壁部によって画定される形態に限らない。 As shown in FIG. 2, the coil connection terminal 6 is manufactured by press-cutting a thin plate member into a predetermined shape and partially bending it. Specifically, the coil connection terminal 6 includes a main body portion 6a and two wall portions 6b erected in parallel with each other from the main body portion 6a. In other words, the coil connection terminal 6 includes a groove 6c defined by the main body 6a and the two walls 6b. In addition, the groove part of the connection terminal for coils which concerns on embodiment of this invention is not restricted to the form demarcated by the two wall parts standingly arranged from a main-body part and this main-body part.
　図３は、コイル用接続端子６（７）の溝部６ｃ（７ｃ）の延在方向に見た、加熱コイル３のコイル線の末端４（５）における素線４ａ（５ａ）とコイル用接続端子６（７）の溝部６ｃ（７ｃ）とを示している。また、図３は、素線４ａ（５ａ）とコイル用接続端子６（７）とが接合される直前の様子を示している。 FIG. 3 shows the wire 4a (5a) and the coil connection terminal at the terminal end 4 (5) of the coil wire of the heating coil 3, as viewed in the extending direction of the groove 6c (7c) of the coil connection terminal 6 (7). 6 (7) groove portion 6c (7c). FIG. 3 shows a state immediately before the wire 4a (5a) and the coil connection terminal 6 (7) are joined.
　加熱コイル３のコイル線の末端４（５）における複数の素線４ａ（５ａ）は、コイル用接続端子６（７）の溝部６ｃ（７ｃ）内に収容されている。具体的には、コイル線の末端４（５）は絶縁材料が取り除かれた状態（すなわち被覆されていない状態）であって、複数の素線４ａ（５ａ）が外部に露出している。その露出した複数の素線４ａ（５ａ）が、接続端子６（７）の溝部６ｃ（７ｃ）内に収容されている。 The plurality of strands 4a (5a) at the end 4 (5) of the coil wire of the heating coil 3 are accommodated in the groove 6c (7c) of the coil connection terminal 6 (7). Specifically, the end 4 (5) of the coil wire is in a state where the insulating material is removed (that is, in a state where it is not covered), and the plurality of strands 4a (5a) are exposed to the outside. The exposed plurality of strands 4a (5a) are accommodated in the groove 6c (7c) of the connection terminal 6 (7).
　また、図３に示すように、コイル用接続端子６（７）の溝部６ｃ（７ｃ）内に収容されている加熱コイル３のコイル線の末端４（５）における複数の素線４ａ（５ａ）に対して、蓋体９（１０）が覆いかぶさっている。具体的には、蓋体９（１０）は、図１および図２に示すようにプレート状の部材であって、図３に示すようにコイル用接続端子６（７）の溝部６ｃ（７ｃ）内に少なくとも一部が配置可能な形状を備える。すなわち、蓋体９（１０）は、コイル用接続端子６（７）に接触するとともに、溝部６ｃ（７ｃ）内に収容された複数の素線４ａ（５ａ）にも接触する形状を備える。 Moreover, as shown in FIG. 3, the some strand 4a (5a) in the terminal end 4 (5) of the coil wire of the heating coil 3 accommodated in the groove part 6c (7c) of the coil connection terminal 6 (7). On the other hand, the lid 9 (10) is covered. Specifically, the lid 9 (10) is a plate-like member as shown in FIGS. 1 and 2, and as shown in FIG. 3, the groove 6c (7c) of the coil connection terminal 6 (7). It has a shape that can be at least partially disposed therein. That is, the lid body 9 (10) has a shape that contacts the coil connection terminal 6 (7) and also contacts the plurality of strands 4a (5a) accommodated in the groove 6c (7c).
　このような蓋体９（１０）と、加熱コイル３のコイル線の末端４（５）における複数の素線４ａ（５ａ）と、コイル用接続端子６（７）とが互いに接合される。 The lid 9 (10), the plurality of strands 4a (5a) at the end 4 (5) of the coil wire of the heating coil 3, and the coil connection terminal 6 (7) are joined to each other.
　蓋体９（１０）、複数の素線４ａ（５ａ）、およびコイル用接続端子６（７）は、溶接、例えば超音波溶接などによって接合される。超音波溶接の場合、溶接は、以下の手順で実行される。 The lid 9 (10), the plurality of strands 4a (5a), and the coil connection terminals 6 (7) are joined by welding, for example, ultrasonic welding. In the case of ultrasonic welding, welding is performed according to the following procedure.
　まず、コイル用接続端子６（７）の溝部６ｃ（７ｃ）内に加熱コイル３のコイル線の末端４（５）における複数の素線４ａ（５ａ）が収容され、その収容された素線４ａ（５ａ）に覆いかぶさるように蓋体９（１０）が溝部６ｃ（７ｃ）内に部分的に配置される。 First, a plurality of strands 4a (5a) at the end 4 (5) of the coil wire of the heating coil 3 are accommodated in the groove 6c (7c) of the coil connection terminal 6 (7), and the accommodated strand 4a. The lid 9 (10) is partially disposed in the groove 6c (7c) so as to cover (5a).
　次に、図３に示すように、下方からコイル用接続端子６（７）にアンビル１１を当てるとともに上方から蓋体９（１０）に超音波溶接用ホーン１２を当てることにより、蓋体９（１０）、加熱コイル３のコイル線の複数の素線４ａ（５ａ）、およびコイル用接続端子６（７）の溝部６ｃ（７ｃ）をアンビル１１および超音波溶接用ホーン１２によって挟持する。それにより、蓋体９（１０）によって複数の素線４ａ（５ａ）を溝部６ｃ（７ｃ）の奥に向かって押圧する。その結果、コイル用接続端子６（７）の溝部６ｃ（７ｃ）内の複数の素線４ａ（５ａ）は可能な限り密集するとともに、可能な限り多くの素線４ａ（５ａ）がコイル用接続端子６（７）および蓋体９（１０）に接触する。 Next, as shown in FIG. 3, the anvil 11 is applied to the coil connection terminal 6 (7) from below and the ultrasonic welding horn 12 is applied to the lid 9 (10) from above, so that the lid 9 ( 10) The plurality of strands 4a (5a) of the coil wire of the heating coil 3 and the groove 6c (7c) of the coil connection terminal 6 (7) are sandwiched by the anvil 11 and the ultrasonic welding horn 12. Thereby, the plurality of strands 4a (5a) are pressed toward the back of the groove 6c (7c) by the lid 9 (10). As a result, the plurality of strands 4a (5a) in the groove 6c (7c) of the coil connection terminal 6 (7) are as dense as possible, and as many strands 4a (5a) as possible are connected to the coil. Contact the terminal 6 (7) and the lid 9 (10).
　続いて、超音波溶接用ホーン１２の移動によって蓋体９（１０）が複数の加熱コイル３のコイル線の素線４ａ（５ａ）を押圧しつつ、超音波溶接用ホーン１２が超音波振動する。それにより、図４に示すように、コイル用接続端子６（７）と蓋体９（１０）に囲まれた複数の素線４ａ（５ａ）が溶融し、それにより蓋体９（１０）がコイル用接続端子６（７）の溝部６ｃ（７ｃ）の奥に移動する。最終的には、図４に示すように、コイル用接続端子６（７）の溝部６ｃ（７ｃ）内に収容された複数の素線４ａ（５ａ）は、溶融して一体化するとともに、コイル用接続端子６（７）および蓋体９（１０）に接合する。また、コイル用接続端子６（７）と蓋体９（１０）も接合する。これにより、複数の素線４ａ（５ａ）、コイル用接続端子６（７）の溝部６ｃ（７ｃ）、および蓋体９（１０）が互いに且つ一体的に接合されてなる接合部１３が構成される。 Subsequently, the ultrasonic welding horn 12 vibrates ultrasonically while the lid 9 (10) presses the wire 4a (5a) of the coil wires of the plurality of heating coils 3 by the movement of the ultrasonic welding horn 12. . Thereby, as shown in FIG. 4, the plurality of strands 4 a (5 a) surrounded by the coil connection terminals 6 (7) and the lid body 9 (10) are melted, whereby the lid body 9 (10) is melted. It moves to the back of the groove 6c (7c) of the coil connection terminal 6 (7). Finally, as shown in FIG. 4, the plurality of strands 4a (5a) housed in the groove 6c (7c) of the coil connection terminal 6 (7) are melted and integrated, and the coil It joins to the connection terminal 6 (7) and the lid 9 (10). Also, the coil connection terminal 6 (7) and the lid 9 (10) are joined. As a result, a joint portion 13 is formed in which the plurality of strands 4a (5a), the groove portions 6c (7c) of the coil connection terminals 6 (7), and the lid body 9 (10) are joined together and integrally. The
　なお、加熱コイル３のコイル線の末端４、５とコイル用接続端子６、７の接合は、加熱コイル３がコイルベース２上に載置され且つコイル用接続端子６、７が端子ホルダー部８上に載置された後に実行してもよいし、または載置前に実行してもよい。あるいは、加熱コイル３はコイルベース２上に載置されているが、コイル用接続端子６、７は端子ホルダー部８に載置されていない状態で、コイル線の末端４、５とコイル用接続端子６、７の接合を実行してもよい。 Note that the ends 4 and 5 of the coil wire of the heating coil 3 and the coil connection terminals 6 and 7 are joined by placing the heating coil 3 on the coil base 2 and connecting the coil connection terminals 6 and 7 to the terminal holder portion 8. It may be executed after being placed on top, or may be executed before being placed. Alternatively, the heating coil 3 is placed on the coil base 2, but the coil connection terminals 6 and 7 are not placed on the terminal holder portion 8, and the coil ends 4 and 5 are connected to the coil. Bonding of the terminals 6 and 7 may be performed.
　また、加熱コイル３のコイル線の末端４、５とコイル用接続端子６、７の接合は、超音波溶接に限らない。例えば、抵抗溶接、ＴＩＧ溶接などであってもよい。すなわち、コイル線の末端４、５における複数の素線４ａ、５ａ、コイル用接続端子６、７（その溝部６ｃ（７ｃ））、および蓋体９、１０を互いに接合させることができる溶接であればよい。 Further, the joining of the terminal ends 4 and 5 of the coil wire of the heating coil 3 and the connection terminals for coils 6 and 7 is not limited to ultrasonic welding. For example, resistance welding, TIG welding, or the like may be used. That is, it is possible to weld a plurality of the strands 4a and 5a at the terminal ends 4 and 5 of the coil wire, the coil connection terminals 6 and 7 (the groove portion 6c (7c)), and the lids 9 and 10 to each other. That's fine.
　さらに言えば、加熱コイル３のコイル線が一本の素線で構成される場合にも、複数の素線と同様に、その一本の素線とコイル用接続端子の溝部との接合が可能である。すなわち、本発明の実施の形態に係るコイル線の素線は、少なくとも一本である。 Furthermore, even when the coil wire of the heating coil 3 is composed of a single strand, it is possible to join the single strand to the groove of the coil connection terminal in the same manner as a plurality of strands. It is. That is, there is at least one element wire of the coil wire according to the embodiment of the present invention.
　図１に示すように、加熱コイル３のコイル線の末端４、５に接合されるコイル用接続端子６、７それぞれには、電流供給端子として圧着端子１５が接続されている。例えば、圧着端子１５の貫通穴に挿入されたねじ１６が接続端子６、７それぞれに形成されたねじ部６ｄ、７ｄに係合することにより（図２参照）、圧着端子１５はコイル用接続端子６、７それぞれに接続されている。 As shown in FIG. 1, a crimp terminal 15 as a current supply terminal is connected to each of the coil connection terminals 6 and 7 joined to the ends 4 and 5 of the coil wire of the heating coil 3. For example, when the screw 16 inserted into the through hole of the crimp terminal 15 is engaged with the screw portions 6d and 7d formed on the connection terminals 6 and 7, respectively (see FIG. 2), the crimp terminal 15 becomes the coil connection terminal. 6 and 7 are connected to each other.
　また、コイル用接続端子７、８それぞれに接続された圧着端子１５には、誘導加熱調理器の制御ユニット（図示せず）から延びるリード線１７、１８が取り付けられている。例えば、リード線１７、１８は圧着端子１５にかしめ接合されている。 Further, lead wires 17 and 18 extending from a control unit (not shown) of the induction heating cooker are attached to the crimp terminals 15 connected to the coil connection terminals 7 and 8, respectively. For example, the lead wires 17 and 18 are caulked and joined to the crimp terminal 15.
　制御ユニットのリード線１７、１８は、加熱コイル３に高周波電流を供給するためのリード線である。制御ユニットは、リード線１７、１８、圧着端子１５、コイル用接続端子６、７、コイル用接続端子６、７の溝６ｃ（７ｃ）内の複数の素線４ａ、５ａを介して加熱コイル３に高周波電流を供給する。 The lead wires 17 and 18 of the control unit are lead wires for supplying a high frequency current to the heating coil 3. The control unit includes the heating coils 3 through the lead wires 17 and 18, the crimp terminals 15, the coil connection terminals 6 and 7, and the plurality of wires 4 a and 5 a in the grooves 6 c (7 c) of the coil connection terminals 6 and 7. A high frequency current is supplied.
　本実施の形態１によれば、誘導加熱調理器などに使用され、電流が供給される加熱コイル３を備える誘導加熱体１において、その加熱コイル３のコイル線と、加熱コイル３に電流を供給するためのコイル用接続端子６、７との接合について高い信頼性を確保することができる。 According to the first embodiment, in an induction heating body 1 including a heating coil 3 that is used in an induction heating cooker or the like and is supplied with a current, a current is supplied to the coil wire of the heating coil 3 and the heating coil 3. Therefore, high reliability can be ensured for the connection with the coil connection terminals 6 and 7.
　具体的には、図３に示すように、コイル用接続端子６（７）の溝部６ｃ（７ｃ）内に収容されている加熱コイル３のコイル線の複数の素線４ａ（５ａ）は、溶接中においてその周囲がコイル用接続端子６（７）と蓋体９（１０）とによって覆われ且つ接触された状態であるため、一様に溶融しやすい。それにより、素線４ａ（５ａ）が一体化した後において、素線が溶融していない部分が存在することが抑制される。その結果として、素線が溶融した部分と素線が溶融していない部分との間の境界においてクラックや剥離が発生することが抑制される。したがって、加熱コイルのコイル線とその加熱コイルに電流を供給するためのコイル用接続端子との接合について、高い信頼性を得ることができる。 Specifically, as shown in FIG. 3, the plurality of strands 4a (5a) of the coil wire of the heating coil 3 housed in the groove 6c (7c) of the coil connection terminal 6 (7) are welded. Since the inside is covered and contacted by the coil connection terminal 6 (7) and the lid 9 (10), it is easily melted uniformly. Thereby, after the strand 4a (5a) is integrated, it is suppressed that the part which the strand does not melt | dissolve exists. As a result, the occurrence of cracks and peeling at the boundary between the portion where the strand is melted and the portion where the strand is not melted is suppressed. Therefore, high reliability can be obtained for the joining of the coil wire of the heating coil and the coil connection terminal for supplying current to the heating coil.
　また、溶接中において蓋体９（１０）に押圧されながら素線４ａ（５ａ）が溶融することにより、溶融して一体化された素線４ａ（５ａ）は、コイル用接続端子６（７）および蓋体９（１０）に対して安定的に広い接触面積で接触することができる。これにより、素線４ａ（５ａ）（すなわちコイル線）とコイル用接続端子６（７）および蓋体９（１０）との間の接触抵抗が限りなくゼロに近づくとともに接触抵抗のバラツキを抑制することができる。その結果、高い電流が流れても、異常発熱が発生しにくい。したがって、加熱コイルのコイル線とその加熱コイルに電流を供給するためのコイル用接続端子との接合について、高い信頼性を得ることができる。 Further, when the wire 4a (5a) is melted while being pressed against the lid 9 (10) during welding, the melted and integrated wire 4a (5a) is connected to the coil connection terminal 6 (7). In addition, the lid 9 (10) can be stably contacted with a wide contact area. As a result, the contact resistance between the wire 4a (5a) (that is, the coil wire) and the coil connection terminal 6 (7) and the lid 9 (10) approaches zero as much as possible, and variation in contact resistance is suppressed. be able to. As a result, even when a high current flows, abnormal heat generation hardly occurs. Therefore, high reliability can be obtained for the joining of the coil wire of the heating coil and the coil connection terminal for supplying current to the heating coil.
　コイル用接続端子６（７）の溝部６ｃ（７ｃ）内に収容された加熱コイル３の素線４ａ（５ａ）を短時間で且つさらに高い信頼性を確保しつつコイル用接続端子６（７）に接続するために、コイル用接続端子６（７）の溝部６ｃ（７ｃ）の断面（その延在方向と直交する断面）は、溝深さに比べて溝幅が大きい形状を備えるのが好ましい。これにより、コイル用接続端子６（７）および蓋体９（１０）に接触する素線４ａ（５ａ）の本数が増加する。その結果、複数の素線４ａ（５ａ）がさらに溶融しやすくなり、それにより複数の素線４ａ（５ａ）がより一体化されるとともに溶融された素線４ａ（５ａ）がより広い接触面積でコイル用接続端子６（７）および蓋体９（１０）に対して接触することができる。なお、コイル用接続端子６（７）の溝部６ｃ（７ｃ）の断面形状は、図３に示すように溝幅方向に長い長方形に限らず、溝部６ｃ（７ｃ）がコイル線の複数の素線４ａ（５ａ）を収容することができ、複数の素線４ａ（５ａ）がより多くコイル用接続端子６（７）および蓋体９（１０）に接触することができる形状であればよい。 The coil connection terminal 6 (7) while securing the element wire 4a (5a) of the heating coil 3 accommodated in the groove 6c (7c) of the coil connection terminal 6 (7) in a short time and with higher reliability. In order to connect to the coil, it is preferable that the cross section of the groove 6c (7c) of the coil connection terminal 6 (7) (cross section orthogonal to the extending direction) has a shape having a larger groove width than the groove depth. . Thereby, the number of the strand 4a (5a) which contacts the connection terminal 6 (7) for coils and the cover body 9 (10) increases. As a result, the plurality of strands 4a (5a) are more easily melted, whereby the plurality of strands 4a (5a) are more integrated, and the melted strand 4a (5a) has a wider contact area. It can contact with respect to the coil connection terminal 6 (7) and the lid 9 (10). The cross-sectional shape of the groove 6c (7c) of the coil connection terminal 6 (7) is not limited to a rectangle that is long in the groove width direction as shown in FIG. 3, and the groove 6c (7c) is a plurality of coil wires. 4a (5a) can be accommodated, and the plurality of strands 4a (5a) need only have a shape that allows more contact with the coil connection terminals 6 (7) and the lid body 9 (10).
（実施の形態２）
　図５は、実施の形態２に係る誘電加熱体における、コイル線の末端とコイル用接続端子との接合部の断面図である。実施の形態１の構成要素と同一の構成要素には、同一の符号が付されている。 (Embodiment 2)
FIG. 5 is a cross-sectional view of a joint portion between the terminal end of the coil wire and the coil connection terminal in the dielectric heating body according to the second embodiment. The same components as those in the first embodiment are denoted by the same reference numerals.
　本実施の形態２のコイル用接続端子２６（２７）および蓋体２９（３０）は、上述の実施の形態１のコイル用接続端子６（７）および蓋体９（１０）と同一形状である。しかし、図４に示すように、実施の形態１のコイル用接続端子６（７）と蓋体９（１０）の材料は、互いに異なるとともに、加熱コイル３のコイル線の素線４ａ（５ａ）の材料とも異なる。これに対して、本実施の形態２のコイル用接続端子２６（２７）および蓋体２９(３０)の材料は、同一であって、コイル線の素線４ａ（５ａ）の材料とは異なる。例えば、コイル用接続端子２６（２７）および蓋体２９（３０）は、アルミニウムまたはアルミニウム合金から作製されたコイル線の素線４ａ（５ａ）と異なり、ステンレスまたはりん青銅から作製される。 The coil connection terminal 26 (27) and the lid 29 (30) of the second embodiment have the same shape as the coil connection terminal 6 (7) and the lid 9 (10) of the first embodiment. . However, as shown in FIG. 4, the materials of the coil connection terminal 6 (7) and the lid 9 (10) of the first embodiment are different from each other, and the wire 4 a (5 a) of the coil wire of the heating coil 3. Different from the material. On the other hand, the material of the coil connection terminal 26 (27) and the lid 29 (30) of the second embodiment is the same, and is different from the material of the coil wire 4a (5a). For example, the coil connection terminal 26 (27) and the lid 29 (30) are made of stainless steel or phosphor bronze unlike the coil wire 4a (5a) made of aluminum or an aluminum alloy.
　したがって、実施の形態１と同様に溶接が実行されると、図５に示すように、同一材料から作製されたコイル用接続端子２６（２７）と蓋体２９（３０）とが一体化する。これにより、コイル用接続端子２６（２７）と蓋体２９（３０）との間の固有抵抗の差がゼロになる。その結果、高い電流が流れることによって発生しうる異常発熱をより抑制することができる。したがって、加熱コイルのコイル線とその加熱コイルに電流を供給するためのコイル用接続端子との接合について、より高い信頼性を得ることができる。 Therefore, when welding is performed in the same manner as in the first embodiment, as shown in FIG. 5, the coil connection terminal 26 (27) and the lid 29 (30) made of the same material are integrated. Thereby, the difference in specific resistance between the coil connection terminal 26 (27) and the lid 29 (30) becomes zero. As a result, it is possible to further suppress abnormal heat generation that may be caused by a high current flowing. Therefore, higher reliability can be obtained with respect to the bonding between the coil wire of the heating coil and the coil connection terminal for supplying current to the heating coil.
（実施の形態３）
　図６は、実施の形態３に係る誘導加熱体における、コイル線の末端とコイル用接続端子との接合部の断面図である。実施の形態１の構成要素と同一の構成要素には同一の符号が付されている。 (Embodiment 3)
FIG. 6 is a cross-sectional view of a joint portion between the terminal end of the coil wire and the coil connection terminal in the induction heating body according to the third embodiment. The same components as those of the first embodiment are denoted by the same reference numerals.
　本実施の形態３のコイル用接続端子３６（３７）および蓋体３９（４０）は、上述の実施の形態１のコイル用接続端子６（７）および蓋体９（１０）と同一形状である。しかし、図４に示すように、実施の形態１のコイル用接続端子６（７）と蓋体９（１０）の材料は、互いに異なるとともに、加熱コイル３のコイル線の素線４ａ（５ａ）の材料とも異なる。これに対して、本実施の形態３のコイル用接続端子３６（３７）および蓋体３９(４０)の材料は、コイル線の素線４ａ（５ａ）の材料と同一である。例えば、コイル用接続端子３６（３７）および蓋体３９（４０）は、コイル線の素線４ａ（５ａ）の材料と同一材料であるアルミニウムまたはアルミニウム合金から作製される。 The coil connection terminal 36 (37) and the lid 39 (40) according to the third embodiment have the same shape as the coil connection terminal 6 (7) and the lid 9 (10) according to the first embodiment. . However, as shown in FIG. 4, the materials of the coil connection terminal 6 (7) and the lid 9 (10) of the first embodiment are different from each other, and the wire 4 a (5 a) of the coil wire of the heating coil 3. Different from the material. In contrast, the material of the coil connection terminal 36 (37) and the lid 39 (40) of the third embodiment is the same as the material of the coil wire 4a (5a). For example, the coil connection terminal 36 (37) and the lid 39 (40) are made of aluminum or aluminum alloy which is the same material as the material of the coil wire 4a (5a).
　したがって、実施の形態１と同様に溶接が実行されると、図６に示すように、同一材料から作製されている、加熱コイル３のコイル線の素線４ａ（５ａ）、コイル用接続端子３６（３７）、および蓋体３９（４０）とが一体化する。これにより、三者間の固有抵抗の差がゼロになる。その結果、高い電流が流れることによって発生しうる異常発熱を、さらにより抑制することができる。したがって、加熱コイルのコイル線とその加熱コイルに電流を供給するためのコイル用接続端子との接合について、さらにより高い信頼性を得ることができる。 Therefore, when welding is performed in the same manner as in the first embodiment, as shown in FIG. 6, the wire 4a (5a) of the coil wire of the heating coil 3 and the coil connection terminal 36 are made of the same material. (37) and the lid 39 (40) are integrated. Thereby, the difference in specific resistance among the three parties becomes zero. As a result, it is possible to further suppress abnormal heat generation that may occur due to a high current flowing. Therefore, even higher reliability can be obtained for the joining of the coil wire of the heating coil and the coil connection terminal for supplying current to the heating coil.
（実施の形態４）
　図７は、本実施の形態４に係る誘導加熱体のコイル用接続端子４６を概略的に示している。なお、図において、上述の実施の形態１の構成要素と同一の構成要素には同一の符号が付されている。 (Embodiment 4)
FIG. 7 schematically shows the coil connection terminal 46 of the induction heating body according to the fourth embodiment. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals.
　図２に示すように、上述の実施の形態１のコイル用接続端子６、７は、薄板部材を所定の形状にプレスカットして部分的に折り曲げることによって作製されている、すなわち１種類の材料から作製されている。これに対して、本実施の形態４のコイル用接続端子４６は、図７に示すように、少なくとも２つの材料を接合して構成されたクラッド材から作製されている。 As shown in FIG. 2, the coil connection terminals 6 and 7 of the first embodiment are manufactured by press-cutting a thin plate member into a predetermined shape and partially bending it, that is, one kind of material. It is made from. On the other hand, the coil connection terminal 46 according to the fourth embodiment is made of a clad material formed by joining at least two materials as shown in FIG.
　具体的には、コイル用接続端子４６は、加熱コイル３のコイル線の素線４ａの材料と同一の材料（第１の材料）と制御ユニット（図示せず）に接続された圧着端子１５の材料と同一の材料（第２材料）を接合して構成されたクラッド材から作製されている。 Specifically, the coil connection terminal 46 is formed of the same material (first material) as the material of the wire 4a of the coil wire of the heating coil 3 and the crimp terminal 15 connected to the control unit (not shown). The clad material is formed by joining the same material (second material) as the material.
　例えば、コイル用接続端子４６は、加熱コイル３のコイル線の素線４ａの材料であるアルミニウムから作製された第１の部材４６ａと、圧着端子１５の材料であるステンレスまたはリン青銅から作製された第２の部材４６ｂとを接合して構成されたクラッド材から作製されている。 For example, the coil connection terminal 46 is made of a first member 46 a made of aluminum which is a material of the wire 4 a of the coil wire of the heating coil 3 and stainless steel or phosphor bronze which is a material of the crimp terminal 15. The clad material is formed by joining the second member 46b.
　加熱コイル３のコイル線の素線４ａと接合される溝部４６ｃは、第１の部材４６に形成されている。溝部４６ｃ内に配置されている蓋体９は、素線４ａおよび第１の部材４６ａの材料と同一の材料、例えばアルミニウムから作製されている。なお、素線４ａ、溝部４６ｃ、および蓋体９との接合は、上述の実施の形態１と同様に行われる。 The groove 46c joined to the wire 4a of the coil wire of the heating coil 3 is formed in the first member 46. The lid 9 disposed in the groove 46c is made of the same material as the material of the wire 4a and the first member 46a, for example, aluminum. In addition, joining with the strand 4a, the groove part 46c, and the cover body 9 is performed like the above-mentioned Embodiment 1. FIG.
　一方、圧着端子１５の貫通穴を通過したねじ１６が係合するねじ部４６ｄは、第２の部材４６ｂに形成されている。なお、圧着端子１５と第２の部材４６ｂとの間にはワッシャ５０が介在する。 On the other hand, the screw part 46d with which the screw 16 that has passed through the through hole of the crimp terminal 15 engages is formed in the second member 46b. A washer 50 is interposed between the crimp terminal 15 and the second member 46b.
　なお、第２の部材４６ｂの材料は、圧着端子１５、ねじ１６、およびワッシャ５０に対してイオン化傾向の差および電位差が小さく且つ固有抵抗が小さい材料であれば、これらの材料と同一である必要はない。 The material of the second member 46b needs to be the same as that of the crimp terminal 15, the screw 16, and the washer 50 as long as the difference in ionization tendency and the potential difference are small and the specific resistance is small. There is no.
　このようなコイル用接続端子４６によれば、上述の実施の形態３と同様に、加熱コイル３のコイル線の素線４ａとコイル用接続端子４６との間の接合は、異常発熱の発生を抑制することができるともに、高い信頼性を備える。 According to such a coil connection terminal 46, as in the above-described third embodiment, the joining between the wire 4 a of the coil wire of the heating coil 3 and the coil connection terminal 46 generates abnormal heat generation. It can be suppressed and has high reliability.
　また、このようなコイル用接続端子４６によれば、コイル用接続端子４６の第２の部材４６ｂ、圧着端子１５、ねじ１６、およびワッシャ５０の間の固有抵抗の差がゼロにされる。そのため、高電流が流れても異常発熱が発生しにくい。また、圧着端子１５とコイル用接続端子４６の接触部において電食の発生が抑制される。その結果、コイル用接続端子４６と圧着端子１５の接続は、高い信頼性を備える。 Further, according to such a coil connection terminal 46, the difference in specific resistance among the second member 46b, the crimp terminal 15, the screw 16, and the washer 50 of the coil connection terminal 46 is made zero. For this reason, even when a high current flows, abnormal heat generation hardly occurs. Further, the occurrence of electrolytic corrosion is suppressed at the contact portion between the crimp terminal 15 and the coil connection terminal 46. As a result, the connection between the coil connection terminal 46 and the crimp terminal 15 has high reliability.
（実施の形態５）
　図８は、本実施の形態５に係る誘導加熱体の部分的斜視図である。実施の形態１の構成要素と同一の構成要素には、同一の符号が付されている。 (Embodiment 5)
FIG. 8 is a partial perspective view of the induction heating body according to the fifth embodiment. The same components as those in the first embodiment are denoted by the same reference numerals.
　本実施の形態５に係る誘導加熱体５１は、基板５２を有する。基板５２は、コイルベース２に一体的に形成された基板ホルダー部５３上に載置されて固定されている。 The induction heating body 51 according to the fifth embodiment has a substrate 52. The substrate 52 is placed and fixed on a substrate holder 53 formed integrally with the coil base 2.
　基板５２には、加熱コイル３のコイル線の一方の末端４と接合する（具体的には末端４における複数の素線と接合する）コイル用接続端子５４と、他方の末端５と接合する（具体的には末端５における複数の素線と接合する）コイル用接続端子５５とが搭載されている。また、基板５２は、加熱コイル３に電流を供給するための制御ユニット（図示せず）のリード線１７、１８に取り付けられている圧着端子１５と電気的に接続するユニット用接続端子５６、５７が搭載されている。基板５２は、一方のコイル用接続端子５４と一方のユニット用接続端子５６とを電気的に接続するための配線パターン（図示せず）と、他方のコイル用接続端子５５と他方のユニット用接続端子５７とを電気的に接続する、例えば銅パターンなどの配線パターン（図示せず）とを備える。 The substrate 52 is joined to one end 4 of the coil wire of the heating coil 3 (specifically, joined to a plurality of strands at the end 4) and to the other end 5 ( Specifically, a coil connection terminal 55 (which is joined to a plurality of strands at the end 5) is mounted. In addition, the substrate 52 is electrically connected to the crimp terminals 15 attached to the lead wires 17 and 18 of a control unit (not shown) for supplying a current to the heating coil 3. Is installed. The board 52 has a wiring pattern (not shown) for electrically connecting one coil connection terminal 54 and one unit connection terminal 56, and the other coil connection terminal 55 and the other unit connection. A wiring pattern (not shown) such as a copper pattern is provided to electrically connect the terminal 57.
　基板５２上に搭載されたコイル用接続端子５４、５５は、実施の形態１のコイル用接続端子６、７と同様に、加熱コイル３のコイル線の末端４、５における素線を収容する溝部５４ｃ、５５ｃを備える。また、溝部５４ｃ、５５ｃ内には、実施の形態１の蓋体９、１０と同様の蓋体５８、５９が配置されている。 The coil connection terminals 54 and 55 mounted on the substrate 52 are groove portions for accommodating the strands at the ends 4 and 5 of the coil wire of the heating coil 3, similarly to the coil connection terminals 6 and 7 of the first embodiment. 54c and 55c. In addition, lids 58 and 59 similar to the lids 9 and 10 of the first embodiment are disposed in the groove portions 54c and 55c.
　基板５２上に搭載されたコイル用接続端子５４、５５、その溝部５４ｃ、５５ｃ内に収容された加熱コイル３のコイル線の複数の素線、および蓋体５８、５９は、実施の形態１のコイル用接続端子６、７、その溝部６ｃ、７ｃに収容された複数の素線４ａ、５ａ、および蓋体９、１０と同様に、溶接によって互いに接合されている。 The coil connection terminals 54 and 55 mounted on the substrate 52, the plurality of strands of the coil wire of the heating coil 3 accommodated in the grooves 54c and 55c, and the lids 58 and 59 are the same as those in the first embodiment. The coil connection terminals 6 and 7, the plurality of strands 4 a and 5 a accommodated in the grooves 6 c and 7 c, and the lids 9 and 10 are joined together by welding.
　なお、加熱コイル３のコイル線の末端４、５とコイル用接続端子５４、５５の接合は、加熱コイル３がコイルベース２上に載置され且つ基板５２が基板ホルダー部５３上に載置された後に実行してもよいし、または載置前に実行してもよい。あるいは、加熱コイル３はコイルベース２上に載置されているが、基板５２は基板ホルダー部５３に載置されていない状態で、コイル線の末端４、５とコイル用接続端子５４、５５の接合を実行してもよい。 Note that the ends 4 and 5 of the coil wire of the heating coil 3 and the coil connection terminals 54 and 55 are joined by placing the heating coil 3 on the coil base 2 and the substrate 52 on the substrate holder 53. It may be executed after or after placement. Alternatively, the heating coil 3 is placed on the coil base 2, but the substrate 52 is not placed on the substrate holder 53, and the ends 4 and 5 of the coil wires and the coil connection terminals 54 and 55 are connected. Bonding may be performed.
　基板５２上に搭載されたユニット用接続端子５６、５７には、制御ユニット（図示せず）のリード線１７、１８に取り付けられた圧着端子１５が、例えばねじによって接続されている。 The crimp terminals 15 attached to the lead wires 17 and 18 of the control unit (not shown) are connected to the unit connection terminals 56 and 57 mounted on the substrate 52 by, for example, screws.
　制御ユニットは、リード線１７、１８、圧着端子１５、ユニット用接続端子５６、５７、基板５２の配線パターン、コイル用接続端子５４、５５、コイル用接続端子５４、５５の溝部５４ｃ、５５ｃ内の複数の素線介して加熱コイル３に高周波電流を供給する。 The control unit includes lead wires 17 and 18, crimp terminals 15, unit connection terminals 56 and 57, a wiring pattern of the substrate 52, coil connection terminals 54 and 55, and groove portions 54 c and 55 c of the coil connection terminals 54 and 55. A high frequency current is supplied to the heating coil 3 through a plurality of strands.
　本実施の形態５における加熱コイル３のコイル線と、加熱コイル３に電流を供給するためのコイル用接続端子５４、５５との接合についても、実施の形態１における加熱コイル３のコイル線とコイル用接続端子６、７との接合と同様に、高い信頼性を確保することができる。 Regarding the joining of the coil wire of the heating coil 3 in the fifth embodiment and the coil connection terminals 54 and 55 for supplying current to the heating coil 3, the coil wire and the coil of the heating coil 3 in the first embodiment are also used. High reliability can be ensured similarly to the joining with the connection terminals 6 and 7 for use.
（実施の形態６）
　図９は、本実施の形態６に係る誘導加熱体の部分的斜視図である。実施の形態５の構成要素と同一の構成要素には、同一の符号が付されている。 (Embodiment 6)
FIG. 9 is a partial perspective view of the induction heating body according to the sixth embodiment. The same components as those in the fifth embodiment are denoted by the same reference numerals.
　上述の実施の形態５の場合、図８に示すように、１つの基板５２に、コイル用接続端子５４、５５およびユニット用接続端子５６、５７が搭載されている。一方、本実施の形態６の誘導加熱体６１においては、コイル用接続端子５４、５５は、異なる別々の基板５２Ａ、５２Ｂに搭載されている。 In the case of the above-described fifth embodiment, as shown in FIG. 8, coil connection terminals 54 and 55 and unit connection terminals 56 and 57 are mounted on one substrate 52. On the other hand, in the induction heating body 61 of the sixth embodiment, the coil connection terminals 54 and 55 are mounted on different separate substrates 52A and 52B.
　２つの基板５２Ａ、５２Ｂは、それらの間にギャップ６２を設けた状態で基板ホルダー部５３に固定されている。 The two substrates 52A and 52B are fixed to the substrate holder portion 53 with a gap 62 provided therebetween.
　基板５２Ａ上には、コイル用接続端子５４とユニット用接続端子５６とが搭載されている。また、基板５２Ａは、コイル用接続端子５４とユニット用接続端子５６とを電気的に接続する、例えば銅パターンなどの配線パターン（図示せず）を備える。 A coil connection terminal 54 and a unit connection terminal 56 are mounted on the substrate 52A. The substrate 52A includes a wiring pattern (not shown) such as a copper pattern that electrically connects the coil connection terminal 54 and the unit connection terminal 56.
　基板５２Ｂ上には、コイル用接続端子５５とユニット用接続端子５７とが搭載されている。また、基板５２Ｂは、コイル用接続端子５５とユニット用接続端子５７とを電気的に接続する、例えば銅パターンなどの配線パターン（図示せず）を備える。 A coil connection terminal 55 and a unit connection terminal 57 are mounted on the substrate 52B. The substrate 52B includes a wiring pattern (not shown) such as a copper pattern for electrically connecting the coil connection terminal 55 and the unit connection terminal 57.
　本実施の形態６によれば、実施の形態５と同様に、加熱コイル３のコイル線と、加熱コイル３に電流を供給するためのコイル用接続端子５４、５５との接合について、高い信頼性を確保することができる。 According to the sixth embodiment, as in the fifth embodiment, high reliability can be achieved with respect to the bonding between the coil wire of the heating coil 3 and the coil connection terminals 54 and 55 for supplying current to the heating coil 3. Can be secured.
　また、それぞれの基板５２Ａ、５２Ｂが実施の形態５に基板５２に比べてコンパクトであるため、また、コイル用接続端子５４、５５が異なる別々の基板５２Ａ、５２Ｂに搭載されているため、実施の形態５に比べて誘導加熱体の組み立て性が優れる。 Further, each of the substrates 52A and 52B is more compact than the substrate 52 in the fifth embodiment, and the coil connection terminals 54 and 55 are mounted on different substrates 52A and 52B. Compared to Form 5, the assembly of the induction heating body is excellent.
　例えば、加熱コイル３のコイル線の一方の末端４を基板５２Ａ上に搭載されたコイル用接続端子５４に接合し、その基板５２Ａを基板ホルダー部５３に固定する。続いて、コイル線の他方の末端５を基板５２Ｂに搭載されたコイル用接続端子５４に接合し、その基板５２Ｂを基板ホルダー部５３に固定する。このような方法によれば、コイル線の両方の末端４、５が接合された状態の基板５２を基板ホルダー部５３に固定する場合に比べて組み立てが容易である。 For example, one end 4 of the coil wire of the heating coil 3 is joined to the coil connection terminal 54 mounted on the substrate 52 A, and the substrate 52 A is fixed to the substrate holder 53. Subsequently, the other end 5 of the coil wire is joined to the coil connection terminal 54 mounted on the substrate 52 </ b> B, and the substrate 52 </ b> B is fixed to the substrate holder 53. According to such a method, assembling is easier than in the case where the substrate 52 in a state where both ends 4 and 5 of the coil wire are joined is fixed to the substrate holder portion 53.
　以上、実施の形態１～６を挙げて本発明を説明したが、本発明はこれらに限定されない。 Although the present invention has been described with reference to Embodiments 1 to 6, the present invention is not limited to these.
　例えば、図１０および図１１は、実施の形態６における誘導加熱体６１における、加熱コイル３のコイル線の一方の末端４と一方のコイル用接続端子５４の溝部５４ｃとの接合部を示す斜視図である。 For example, FIGS. 10 and 11 are perspective views showing a joint portion between one end 4 of the coil wire of the heating coil 3 and the groove portion 54c of the one coil connection terminal 54 in the induction heating body 61 in the sixth embodiment. It is.
　図１０および図１１に示す実施の形態６のコイル用接続端子５４の溝部５４ｃと蓋体５８のように、コイル用接続端子と蓋体それぞれは互いに係合し合う係合部を備え、それぞれの係合部を、コイル用接続端子の溝部に対して蓋体を位置決めするように構成するのが好ましい。 Like the groove part 54c and the cover body 58 of the coil connection terminal 54 of the sixth embodiment shown in FIGS. 10 and 11, the coil connection terminal and the cover body each have an engaging portion that engages with each other. The engaging portion is preferably configured to position the lid with respect to the groove portion of the coil connection terminal.
　図１１に示すように、実施の形態６の場合、蓋体５８は、コイル用接続端子５４の溝部５４ｃの幅方向に突出する２つの突出部５８ａを備える形状、すなわち「Ｔ」字形状に形成されている。一方、溝部５４ｃを画定する壁部５４ｂには、蓋体５８の突出部５８ａと係合する溝５４ｄが形成されている。 As shown in FIG. 11, in the case of the sixth embodiment, the lid body 58 is formed in a shape including two projecting portions 58a projecting in the width direction of the groove portion 54c of the coil connection terminal 54, that is, a “T” shape. Has been. On the other hand, a groove 54d that engages with the protrusion 58a of the lid 58 is formed in the wall 54b that defines the groove 54c.
　この蓋体５８の突出部５８ａと壁部５４ｂの溝５４ｄが係合することにより、コイル用接続端子５４の溝部５４ｃに対する蓋体５８の相対位置（溝部５４ｃの延在方向の位置）が一義的に決まる。これにより、コイル用接続端子５４の溝部５４ｃ、その溝部５４ｃ内に収容されたコイル線の複数の素線、および蓋体５８とを接合するときに、蓋体５８が溝部５４ｃ内を移動することが抑制される。その結果、溝部５４ｃ、複数の素線、および蓋体５８を安定して接合することができる。 By engaging the projection 58a of the lid 58 with the groove 54d of the wall 54b, the relative position of the lid 58 with respect to the groove 54c of the coil connection terminal 54 (position in the extending direction of the groove 54c) is unambiguous. It is decided. Thereby, when joining the groove part 54c of the coil connection terminal 54, the plurality of strands of the coil wire accommodated in the groove part 54c, and the lid body 58, the lid body 58 moves in the groove part 54c. Is suppressed. As a result, the groove 54c, the plurality of strands, and the lid 58 can be stably joined.
　なお、コイル用接続端子と蓋体それぞれの係合部は、図１１に示す溝５４ｄや突出部５８ａに限らない。例えば、図２に示す実施の形態１の場合、蓋体９は対向し合う凹部９ａを備え（すなわち「Ｈ」字形状に形成され）、その凹部９ａにコイル用接続端子６の壁部６ｂが係合する。 In addition, the engaging part of each of the coil connection terminal and the lid is not limited to the groove 54d and the protrusion 58a shown in FIG. For example, in the case of the first embodiment shown in FIG. 2, the lid body 9 is provided with concave portions 9a facing each other (that is, formed in an “H” shape), and the wall portions 6b of the coil connection terminals 6 are formed in the concave portions 9a. Engage.
　また例えば、コイル用接続端子が基板に搭載されている場合（上述の実施の形態５および６の場合）、コイル用接続端子はその溝部が基板上から外れるように基板に搭載され、基板はコイル用接続端子の溝部が基板ホルダー部上から外れるように該基板ホルダー部に載置されるのが好ましい。 Further, for example, when the coil connection terminal is mounted on the substrate (in the case of the above-described fifth and sixth embodiments), the coil connection terminal is mounted on the substrate such that the groove portion is removed from the substrate. It is preferable that the connecting terminal is mounted on the substrate holder so that the groove of the connecting terminal is removed from the substrate holder.
　例えば、図１０に示す実施の形態６の場合、基板５２Ａには、コイル用接続端子５４の溝部５４ｃが基板５２Ａ上から外れるように該コイル用接続端子５４が搭載されている。言い換えると、実施の形態６の場合、基板５２Ａは、コイル用接続端子５４の溝部５４ｃの下方に位置する部分を削除した形状を備える。 For example, in the case of the sixth embodiment shown in FIG. 10, the coil connection terminal 54 is mounted on the substrate 52A so that the groove 54c of the coil connection terminal 54 is detached from the substrate 52A. In other words, in the case of the sixth embodiment, the substrate 52A has a shape in which a portion located below the groove 54c of the coil connection terminal 54 is deleted.
　また、基板５２Ａは、コイル用接続端子５４の溝部５４ｃが基板ホルダー部５３の上方から外れるように該基板ホルダー部５３上に載置されている。言い換えると、実施の形態６の場合、基板ホルダー部５３は、コイル用接続端子５４の溝部５４ｃの下方に位置する部分を削除した形状を備える。 The substrate 52A is placed on the substrate holder portion 53 so that the groove portion 54c of the coil connection terminal 54 is disengaged from above the substrate holder portion 53. In other words, in the case of the sixth embodiment, the substrate holder 53 has a shape in which a portion located below the groove 54c of the coil connection terminal 54 is deleted.
　図１０に示すように、コイル用接続端子５４の溝部５４ｃの下方に基板５２Ａの一部および基板ホルダー部５３の一部が存在しないことにより、超音波溶接を実行するときにコイル用接続端子５４の溝部５４ｃに対してアンビル１１を下方から当接させることができる。すなわち、コイル用接続端子５４を搭載した基板５２Ａが基板ホルダー部５３に載置された状態で、コイル用接続端子５４の溝部５４ｃと、コイル線の複数の素線と、蓋体５８とを接合するための超音波溶接を実行することができる。 As shown in FIG. 10, since there is no part of the substrate 52A and part of the substrate holder 53 below the groove 54c of the coil connection terminal 54, the coil connection terminal 54 is used when performing ultrasonic welding. The anvil 11 can be brought into contact with the groove 54c from below. That is, the groove portion 54c of the coil connection terminal 54, the plurality of strands of the coil wire, and the lid body 58 are joined in a state where the substrate 52A on which the coil connection terminal 54 is mounted is placed on the substrate holder portion 53. Ultrasonic welding can be performed.
　本発明は、添付図面を参照しながら好ましい実施の形態に関連して充分に記載されているが、この技術の熟練した人々にとっては種々の変形や修正は明白である。そのような変形や修正は、添付した請求の範囲による本発明の範囲から外れない限りにおいて、その中に含まれると理解されるべきである。 Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.
　２０１３年１月０９日に出願された日本特許出願第２０１３－００１４８８号および同日に出願された日本特許出願２０１３－００１４８９号の明細書、図面、及び特許請求の範囲の開示内容は、全体として参照されて本明細書の中に取り入れられるものである。 The disclosures of the specifications, drawings, and claims of Japanese Patent Application No. 2013-001488 filed on January 09, 2013 and Japanese Patent Application No. 2013-001489 filed on the same day are referred to as a whole. And are incorporated herein.
　本発明にかかる誘導加熱体は、高い信頼性を備えるため、誘導加熱体の加熱コイルに高電流を供給することによって該誘導加熱体を高加熱源として使用する、例えば誘導加熱調理器に使用可能である。 Since the induction heating body according to the present invention has high reliability, the induction heating body is used as a high heating source by supplying a high current to the heating coil of the induction heating body. For example, the induction heating body can be used in an induction heating cooker. It is.
　　　１　　　　誘導加熱体
　　　３　　　　加熱コイル
　　　４　　　　コイル線の末端
　　　４ａ　　　素線
　　　５　　　　コイル線の末端
　　　５ａ　　　素線
　　　６　　　　コイル用接続端子
　　　６ｃ　　　溝部
　　　７　　　　コイル用接続端子
　　　７ｃ　　　溝部
　　　９　　　　蓋体
　　　１０　　　蓋体 DESCRIPTION OF SYMBOLS 1 Induction heating body 3 Heating coil 4 End of coil wire 4a Wire 5 End of coil wire 5a Wire 6 Coil connection terminal 6c Groove portion 7 Coil connection terminal 7c Groove portion 9 Lid body 10 Lid body

Claims (10)

  1. 　加熱コイルを備え、前記加熱コイルのコイル線が少なくとも一本の素線によって構成されている誘導加熱体であって、
    　前記コイル線の末端における素線を収容可能な溝部を備え、前記加熱コイルに電流を供給する制御ユニットに電気的に接続するためのコイル用接続端子と、
    　前記コイル用接続端子の溝部内に収容された前記コイル線の素線に覆いかぶさるように前記コイル用接続端子の溝部内に少なくとも一部が配置可能な蓋体とを有し、
    　前記コイル用接続端子の溝部内に収容された状態の素線を該溝部内に配置された状態の前記蓋体が押圧しつつ溶接が実行されることにより、前記素線、前記コイル用接続端子、および前記蓋体が互いに接合されている、誘導加熱体。     An induction heating body comprising a heating coil, wherein the coil wire of the heating coil is constituted by at least one element wire,
    A coil connecting terminal for electrically connecting to a control unit for supplying a current to the heating coil, comprising a groove portion capable of accommodating a strand at an end of the coil wire;
    A lid that can be at least partially disposed in the groove portion of the coil connection terminal so as to cover the wire of the coil wire housed in the groove portion of the coil connection terminal;
    By performing welding while pressing the element wire accommodated in the groove part of the coil connection terminal while the lid body in a state of being arranged in the groove part, the element wire and the coil connection terminal And an induction heating body in which the lids are joined to each other.
  2. 　前記コイル用接続端子の溝部の延在方向と直交する該溝部の断面が、溝深さに比べて溝幅が大きい形状を備える、請求項１に記載の誘導加熱体。 The induction heating body according to claim 1, wherein a cross section of the groove portion orthogonal to the extending direction of the groove portion of the coil connection terminal has a shape having a groove width larger than the groove depth.
  3. 　前記コイル用接続端子と前記蓋体が、同一の材料から作製され、且つ前記加熱コイルのコイル線の素線の材料と異なる材料から作製されている、請求項１または２に記載の誘導加熱体。 The induction heating body according to claim 1 or 2, wherein the coil connection terminal and the lid are made of the same material and made of a material different from the material of the wire of the coil wire of the heating coil. .
  4. 　前記コイル用接続端子と前記蓋体が、前記加熱コイルのコイル線の素線の材料と同一の材料から作製されている、請求項１または２に記載の誘導加熱体。 The induction heating body according to claim 1 or 2, wherein the coil connection terminal and the lid are made of the same material as the material of the coil wire of the heating coil.
  5. 　前記コイル用接続端子と、前記制御ユニットに電気的に接続されるユニット用接続端子とが搭載され、前記コイル用接続端子と前記ユニット用接続端子とを電気的に接続する配線パターンを備える基板を有する、請求項１から４のいずれか一項に記載の誘導加熱体。 A board having a wiring pattern on which the coil connection terminal and a unit connection terminal electrically connected to the control unit are mounted and electrically connecting the coil connection terminal and the unit connection terminal. The induction heating body according to any one of claims 1 to 4, comprising:
  6. 　前記基板が載置される基板ホルダー部を有し、
    　前記コイル用接続端子は、前記溝部が前記基板上から外れるように前記基板に搭載され、
    　前記基板が、前記コイル用接続端子の溝部が前記基板ホルダー部上から外れるように前記基板ホルダー部上に載置される、請求項５に記載の誘導加熱体。     A substrate holder portion on which the substrate is placed;
    The coil connection terminal is mounted on the substrate such that the groove portion is detached from the substrate,
    The induction heating body according to claim 5, wherein the substrate is placed on the substrate holder portion such that a groove portion of the coil connection terminal is detached from the substrate holder portion.
  7. 　前記コイル用接続端子が、前記加熱コイルのコイル線の一方の末端と接合される第１のコイル用接続端子と、前記加熱コイルのコイル線の他方の末端と接合される第２のコイル用接続端子とを含み、
    　前記基板が、前記第１のコイル用接続端子が搭載された第１の基板と、前記第２のコイル用接続端子が搭載された第２の基板とを含む、請求項５または６に記載の誘導加熱体。     The coil connection terminal is joined to one end of the coil wire of the heating coil, and the second coil connection is joined to the other end of the coil wire of the heating coil. Terminal and
    The said board | substrate contains the 1st board | substrate with which the said 1st coil connection terminal was mounted, and the 2nd board | substrate with which the said 2nd coil connection terminal was mounted. Induction heating body.
  8. 　前記蓋体が、前記加熱コイルのコイル線の素線の材料と同一の材料から作製され、
    　前記制御ユニットが、前記コイル用接続端子と接触して該コイル用接続端子に電流を供給する電流供給端子を備え、
    　前記コイル用接続端子が、前記加熱コイルのコイル線の素線の材料と同一の第１の材料と前記電流供給端子の材料と同一の第２の材料とを含む少なくとも２種類の材料を接合して構成されたクラッド材から作製され、
    　前記加熱コイルのコイル線の素線が、前記第１の材料から作製された前記コイル用接続端子の溝部に接合され、
    　前記電流供給端子が、前記第２の材料から作製された前記コイル用接続端子の部分に接続される、請求項１または２に記載の誘導加熱体。     The lid is made of the same material as the material of the coil wire of the heating coil,
    The control unit includes a current supply terminal that contacts the coil connection terminal and supplies current to the coil connection terminal;
    The coil connection terminal joins at least two kinds of materials including a first material that is the same as the material of the coil wire of the heating coil and a second material that is the same as the material of the current supply terminal. Made from clad material composed of
    The element wire of the coil wire of the heating coil is joined to the groove portion of the coil connection terminal made from the first material,
    The induction heating body according to claim 1 or 2, wherein the current supply terminal is connected to a portion of the coil connection terminal made of the second material.
  9. 　前記コイル用接続端子および前記蓋体それぞれが互いに係合し合う係合部を備え、
    　前記コイル用接続端子の係合部と前記蓋体の係合部は、前記コイル用接続端子の溝部に対して前記蓋体を位置決めするように構成されている、請求項１から８のいずれか一項に記載の誘導加熱体。     The coil connection terminal and the lid each include an engaging portion that engages with each other,
    The engagement portion of the coil connection terminal and the engagement portion of the lid body are configured to position the lid body with respect to the groove portion of the coil connection terminal. The induction heating body according to one item.
  10. 　請求項１から９のいずれか一項に記載の誘導加熱体および制御ユニットを有する誘導加熱調理器。 An induction heating cooker having the induction heating body and the control unit according to any one of claims 1 to 9.
PCT/JP2014/000041 2013-01-09 2014-01-08 Induction heater and induction heating cooker WO2014109287A1 (en)

Priority Applications (3)

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CN201480001124.XA CN105309042B (en) 2013-01-09 2014-01-08 Sensing heating body and induction heating cooking instrument
JP2014537415A JPWO2014109287A1 (en) 2013-01-09 2014-01-08 Induction heating body and induction heating cooker
EP14737674.3A EP2945464A4 (en) 2013-01-09 2014-01-08 Induction heater and induction heating cooker

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ES2668069T3 (en) 2018-05-16
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JPWO2014109287A1 (en) 2017-01-19
EP2945464A4 (en) 2016-03-16
EP3139703B1 (en) 2018-03-14
CN105309042A (en) 2016-02-03
CN105309042B (en) 2017-06-16

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