EP2945464A1 - Induktionsheizer und induktionskocher - Google Patents

Induktionsheizer und induktionskocher Download PDF

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Publication number
EP2945464A1
EP2945464A1 EP14737674.3A EP14737674A EP2945464A1 EP 2945464 A1 EP2945464 A1 EP 2945464A1 EP 14737674 A EP14737674 A EP 14737674A EP 2945464 A1 EP2945464 A1 EP 2945464A1
Authority
EP
European Patent Office
Prior art keywords
coil
connection terminal
coil connection
heating
induction
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP14737674.3A
Other languages
English (en)
French (fr)
Other versions
EP2945464A4 (de
Inventor
Hirosi KUWAMURA
Noriaki Watanabe
Kazuhiko Takenaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
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 Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to EP16190677.1A priority Critical patent/EP3139703B1/de
Publication of EP2945464A1 publication Critical patent/EP2945464A1/de
Publication of EP2945464A4 publication Critical patent/EP2945464A4/de
Withdrawn legal-status Critical Current

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Classifications

    • 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 invention relates to an induction-heating device used as a heat source and an induction-heating cooker therewith.
  • an induction-heating device which is used as a heat source such as heat source in an induction-heating cooker for home use, has a heating coil for generating a high frequency magnetic field.
  • a control unit supplying a high frequency current is electrically connected.
  • wires contained within the coil winding of the heating coil are joined to a connection terminal electrically connected to the control unit.
  • patent documents 1 and 2 disclose a method for joining wires and a connection terminal.
  • Patent document 1 discloses a method for joining wires made from aluminum or aluminum alloy and a connection terminal made from a material such as copper or stainless material by TIG (Tungsten Inert Gas) welding.
  • the connection terminal has a tubular part.
  • the wires and an added metal piece such as silver or silicon, which enhances a strength of a joint part by improving brittleness, are inserted in the tubular part of the connection terminal.
  • the TIG welding is performed with the wires and the added metal piece being within the tubular part of the connection terminal, and thereby joins the wires and the connection terminal.
  • Patent document 2 discloses a method for ultrasonic-welding a core wire made by twisting aluminum wires to a metal terminal made from a material different from aluminum. Specifically, a portion of the core wire having an insulator coating is fastened to the metal terminal with a swage. Uncoated portions of the wires are placed on a portion of the metal terminal set on an anvil, and then a welding horn continues to presses the wires to the metal terminal and supplies it with a high frequency vibration. Consequently, the core wire and the metal terminal are joined together.
  • the joining method disclosed in patent document 1 depends heavily on the added metal. That is, the brittleness improving effect generated by the added metal is insufficient depending on material of the wires or the connection terminal.
  • the connection terminal, and the added metal there is a possibility that a crack or separation occurs in a joint part (boundary) between the wire and the connection terminal. Also, there is a possibility that a crack or separation occurs in a boundary between melted portions and unmelted portions of the wires.
  • a wire contacting with the metal terminal melts and thus joins to the metal terminal, while a wire away from the metal terminal hardly melt. It causes an increase in contact resistance between the core wire and the metal terminal or an occurrence of a variation in contact resistance. In case that a large current flows between the core wire and the metal terminal, the joint part produces an abnormal heat due to the increase or variation in contact resistance.
  • an object of the invention in an induction-heating device having a heating coil supplied with a current and used in an induction-heating cooker and like, to secure a high reliability of a joint between a coil winding of the heating coil and a connection terminal supplying the heating coil with a current.
  • the present invention has the following constitutions.
  • an induction-heating device having a heating coil with a coil winding of the heating coil including at least one wire, the induction-heating device comprising:
  • an induction-heating cooker comprising an induction-heating device and a control unit described above.
  • a joint between a coil winding of the heating coil and a coil connection terminal for supplying the heating coil with a current can has a high reliability.
  • a aspect of the invention is an induction-heating device having a heating coil with a coil winding of the heating coil including at least one wire, the induction-heating device comprising:
  • a joint between a coil winding of the heating coil and the coil connection terminal for supplying the heating coil with a current can have a high reliability.
  • a cross-section of the groove part of the coil connection terminal has a shape in which a groove width is larger than a groove depth. Consequently, a number of the wires contacted with the coil connection terminal and the lid body is increased, and thus the wires easily melt at short times. Therefore, in addition to that the wires are further unified, the melted wires can contact with the coil connection terminal and the lid body through a large contact area. Thereby further secures a high reliability in the joint between the coil winding and the coil connection terminal.
  • the coil connection terminal and the lid body may be made from a same material different from a material from which the wire of the coil winding of the heating coil is made. Therefore, the coil connection terminal and the lid body are unified, and thus difference in specific resistance therebetween becomes zero. Thereby suppresses an occurrence of an abnormal heat due to a high current flow and secures a higher reliability in the joint between the coil winding and the coil connection terminal.
  • the coil connection terminal, the lid body, and the wire of the coil winding of the heating coil may be made from a same material. Differences in specific resistance between the coil connection terminal, the wire of the coil winding, and the lid body become zero. Thereby further suppresses the occurrence of the abnormal heat due to the high current flow and further secures a high reliability in the joint between the coil winding and the coil connection terminal.
  • the induction-heating device may have a substrate having the coil connection terminal and a unit connection terminal mounted thereon and having a wiring pattern electrically connecting the coil connection terminal and the unit connection terminal.
  • the unit connection terminal is electrically connected to the control unit.
  • the induction-heating device may have a substrate holder on which the substrate is placed.
  • the coil connection terminal may be mounted on the substrate with the groove part not overlapping with the substrate in a vertical direction
  • the substrate may be placed on the substrate holder with groove part not overlapping with the substrate holder in the vertical direction. Consequently, an anvil can contact with the groove part of the coil connection terminal from below when an ultrasonic-welding is performed. That is, with the substrate, on which the coil connection terminal is mounted, being placed on the substrate holder part, the ultrasonic-welding for joining the groove part of the coil connection terminal, the wires of the coil winding, and the lid body can be performed.
  • the coil connection terminal may include a first coil connection terminal joined to one end of the coil winding of the heating coil and a second coil connection terminal joined to the other end of the coil winding of the heating coil
  • the substrate may include a first substrate on which the first coil connection terminal is mounted and a second substrate on which the second coil connection terminal is mounted.
  • the lid body and the wire of the coil winding of the heating coil may be made from a same material
  • the control unit may have a current supply terminal contacting with the coil connection terminal and supplying the coil connection terminal with a current
  • the coil connection terminal is made from a cladding material made by joining at least two materials including a first material identical to the material of the wire of the coil winding of the heating coil and a second material identical to a material of the current supply terminal.
  • the wire of the coil winding of the heating coil is joined to the groove part of the coil connection terminal made from the first material and the current supply terminal is connected to a portion of the coil connection terminal made from the second material. Consequently, the joint between the coil connection terminal and the coil winding can have a high reliability, and the connection between the coil connection terminal and the current supply terminal can have a high reliability.
  • the coil connection terminal and the lid body may have engagement parts engaging with each other, and the engagement part of the coil connection terminal and the engagement parts of the lid body may be configured such that the lid body is located with respect to the groove part of the coil connection terminal. Consequently, the groove part of the coil connection terminal, the wires of the coil winding accommodated in the groove part thereof, and the lid body can be stably joined.
  • Another aspect of the invention is an induction-heating cooker having the induction-heating device and the control unit described above.
  • the induction-heating cooker can have a high reliability.
  • FIg.1 is a perspective view showing a portion of an induction-heating device according to a first embodiment of the invention.
  • the induction-heating device shown in Fig.1 is used as a heat source such as heat source of heat in an induction-heating cooker for home use.
  • the induction-heating device 1 has a coil base 2 made from a plastic material, a heating coil 3 placed and fixed on the coil base 2 and generating a magnetic field, and coil connection terminals 6, 7 joined to ends 4, 5 of a coil winding of the heating coil 3.
  • the heating coil 3 is made of, for example, a coil winding made by twisting a plurality of wires made from aluminum or aluminum alloy and coating the twisted wires with an insulating material (for instance, electrical insulating enamel).
  • the wires of the heating coil 3 may be made from a material other than aluminum or aluminum alloy, for example, copper.
  • One end 4 of the coil winding of the heating coil 3 is joined to one coil connection terminal 6.
  • the other end 5 of the coil winding is joined to the other coil connection terminal 7.
  • the coil connection terminals 6, 7 are fixed to a terminal holder part 8 integrally formed and laterally placed on the coil base 2.
  • the coil connection terminals 6, 7 fixed to the terminal holder part 8 are positioned the outside of the heating coil 3 placed on the coil base 2.
  • the coil winding passes through the coil base 2 in a downward direction and then extends toward the terminal holder part 8 in order to join one end 4 and the other end 5 of the coil winding of the heating coil 3 and the coil connection terminals 6, 7.
  • Fig. 2 is a perspective view sowing a portion of the induction-heating device according to the first embodiment.
  • Fig. 2 also shows a joint between one end 4 of the coil winding of the heating coil 3 and one coil connection terminal 6.
  • One coil connection terminal 6 and the other coil connection terminal 7 are about the same in configuration, and thus are the same in joint to the coil winding. Therefore, the joint between one coil connection terminal 6 and one end 4 of the coil winding is only explained.
  • the coil connection terminal 6 is made by press-cutting a thin plate in a desired configuration and then folding the press-cut plate partly.
  • the coil connection terminal 6 has a body part 6a and two wall parts 6b erecting from the body part 6a in parallel to each other. That is, the coil connection terminal 6 has a groove part 6c defined by the body part 6b and two wall parts 6b.
  • a groove part of a coil connection terminal according to an embodiment of the invention is not limited to the groove part defined by the body part and two wall parts thereof.
  • Fig. 3 shows the wires 4a(5a) at the end 4(5) of the coil winding of the heating coil 3 and the groove part 6c(7c) of the coil connection terminal 6(7) when viewed in an extending direction of the groove part 6c(7c) of the coil connection terminal 6(7).
  • Fig. 3 also shows a state right before joining the wires 4a(5a) and the coil connection terminal 6(7).
  • the wires 4a (5a) at the end 4(5) of the coil winding of the heating coil 3 are accommodated in the groove part 6c(7c) of the coil connection terminal 6(7).
  • the insulating material is removed from the end 4(5) of the coil winding (that is, the end is uncoated), and thereby exposes the wires 4a(5a) to outside.
  • the exposed wires 4a(5a) are accommodated in the groove part 6c(7c) of the connection terminal 6(7).
  • a lid body 9(10) covers the wires 4a(5a) at end 4(5) of the coil winding of the heating coil 3 accommodated in the groove part 6c(7c) of the coil connection terminal 6(7).
  • the lid body 9(10) is a plate-like member as show in Figs. 1 and 2 , and has a configuration capable to at least partly be disposed in the groove 6c(7c) of the coil connection terminal 6(7) as shown in Fig. 3 . That is, the lid body 9(10) has a configuration capable to contact with the coil connection terminal 6(7) and the wires 4a(5a) accommodated in the groove part 6c(7c).
  • the lid body 9(10), the wires 4a(5a) at the end 4(5) of the coil winding of the heating coil, and the coil connection terminal 6(7) are joined together.
  • the lid body 9(10), the wires 4a(5a), and the coil connection terminal 6(7) are joined together, by welding, for example, ultrasonic welding.
  • ultrasonic welding the welding is performed according to the following procedure.
  • the wires 4a(5a) at the end 4(5) of the coil winding of the heating coil 3 are accommodated in the groove part 6c(7C) of the coil connection terminal 6(7), and then the lid body 9(10) is partly disposed in the groove part 6c(7c) so as to cover the wires 4a(5a) accommodated therein.
  • an anvil 11 is contacted with the coil connection terminal 6(7) from below while a ultrasonic-welding horn is contacted with the lid body 9(10) from above.
  • the lid body 9(10), the wires 4a(5a) of the coil winding of the heating coil 3, and the groove part 6c(7c) are sandwiched between the anvil 11 and the ultrasonic-welding horn 12, and thereby compresses the wires 4a(5a) into the back of the groove part 6c(7c) through the lid body 9(10). Consequently, the wires 4a(5a) possibly close up in the groove part 6c(7c) of the coil connection terminal 6(7) and thus the coil connection terminal 6(7a) and the lid body 9(10) are contacted with as much as possible of the wires.
  • the ultrasonic-welding horn 12 keeps moving so as to press the wires 4a(5a) of the coil winding of the heating coil 3 through the lid body 9(10) and vibrating at ultrasonic frequency. Therefore, the wires 4a(5a) surrounded by the coil connection terminal 6(7) and the lid body 9(10) melt and thus the lid body 9(10) moves in the back of the groove part 6c(7c) of the coil connection terminal 6(7). Eventually, as shown in Fig. 4 , the wires 4a(5a) accommodated in the groove part 6c(7c) of the coil connection terminal 6(7) are unified by melting itself and joined to the coil connection terminal 6(7) and the lid body 9(10).
  • the joining of the ends 4, 5 of the coil winding of the heating coil 3 and the coil connection terminals 6, 7 may be performed after the heating coil 3 has been placed on the coil base 2 and the coil connection terminals 6, 7 have been mounted on the terminal holder part 8 or before placing and mounting thereof.
  • the joining of the ends 4, 5 of the coil winding and the coil connection terminals 6, 7 may be performed with the heating coil 3 having been placed on the coil base 2 and the coil connection terminals 6, 7 not mounted on the terminal holder part 8.
  • the joining of the ends 4, 5 of the coil winding of the heating coil 3 and the coil connection terminals 6, 7 is not limited to ultrasonic welding.
  • welding such as resistance welding or TIG welding. That is, the welding can at least achieve a mutual joint of the wires 4a, 5a at the ends 4, 5 of the coil winding, the coil connection terminals 6, 7 (the groove parts 6c(7c) thereof), and the lid body 9, 10.
  • the coil winding of the heating coil 3 has a single wire
  • the single wire can be joined to the groove part of the coil connection terminal, as well as a plurality of wires. That is, a coil winding according to an embodiment of the invention has at least one wire.
  • the coil connection terminal s 6, 7 joined to the ends 4, 5 of the coil winding of the heating coil 3 are connected to crimp-type terminals 15 as current supply terminals.
  • screws 16 inserted in through-holes of the crimp-type terminals 15 engage with threaded parts 6d, 7d formed on the connection terminals 6, 7 (See Fig. 2 ) and thereby connects the crimp-type terminals 15 and the coil connection terminals 6, 7.
  • Leads 17, 18 extend from a control unit (not shown) of the induction-heating cooker are attached to the crimp-type terminals 15 connected with the coil connection terminals 7, 8.
  • the leads 17, 18, for example, are swaged to the crimp-type terminals 15.
  • the leads 17, 18 of the control unit are leads for supplying the heating coil 3 with a high frequency current.
  • the control unit supplies the heating coil 3 with the high frequency current through the leads 17, 18, the crimp-type terminals 15, the coil connection terminals 6, 7, and the wires 4a, 5a in the groove part 6c(7c) of the coil connection terminals 6, 7.
  • the induction-heating device 1 which has the heating coil 3 supplied with a current and is used in the induction-heating cooker and like, can has a high reliability of the joint between the coil winding of the heating coil 3 and the coil connection terminals 6, 7 for supplying the heating coil 3 with a current.
  • the wires 4a(5a) of the coil winding of the heating coil 3 accommodated in the groove part 6c(7c) of the coil connection terminals 6(7) are, during welding, in a state that peripheries thereof are covered and contacted with the coil connection terminal 6(7) and the lid body 9(10). It therefore is easy for the wires to melt uniformly. Thereby avoids a presence of unmelted portions of the wires after the wires 4a(5a) has unified. Consequently, it is suppressed that a crack or separation occurs in a boundary between melted portions and unmelted portions of the wires.
  • the joint between the coil winding of the heating coil and the coil connection terminal for supplying the heating coil with a current can secure a high reliability.
  • the wires 4a(5a) melt with it pressed by the lid body 9(10) during welding, the wires 4a(5a), which are unified by melting, can stably contact with the coil connection terminal 6(7) and the lid body 9(10) through a relatively large contact area. Therefore, contact resistances between the wires 4a(5a) (that is, the coil winding) and the coil connection terminal 6(7) and between the wires 4a(5a) and the lid body 9(10) approach zero, and a variation in contact resistance is suppressed. Consequently, an occurrence of an abnormal heat due to a high current flow is suppressed. Thereby secures a high reliability in the joint between the coil winding of the heating coil and the coil connection terminal for supplying the heating coil with a current.
  • a cross-section of the groove part 6c(7c) of the coil connection terminal 6(7) (a cross-section perpendicular to an extending direction thereof) preferably has a shape in which a groove width is larger than a groove depth, in order to join the coil connection terminal 6(7) and the wires 4a(5a) of the heating coil 3 accommodated in groove part 6c(7c) of the coil connection terminal 6(7) at short time with high reliability. Consequently, a number of the wires 4a(5a) contacted with the coil connection terminal 6(7) and the lid body 9(10) is increased, and thus the wires 4a(5a) easily melt.
  • the cross-section shape of the groove part 6c(7c) of the coil connection terminal 6(7) is not limited to a rectangular shape elongated in a groove width direction and may be any shape as long as the groove part 6c(7c) accommodates the wires 4a(5a) of the coil winding and a great number of wires contact with the coil connection terminal 6(7) and the lid body 9(10).
  • Fig.5 is a cross-section view showing a joint part between an end of a coil winding and a coil connection terminal in an induction-heating cooker according to the second embodiment. Elements identical to the elements of the first embodiment have same reference numbers.
  • Configurations of a coil connection terminal 26(27) and a lid body 29(30) of the second embodiment are the same as the configurations of the coil connection terminal 6(7) and the lid body 9(10) of the first embodiment.
  • the coil connection terminal 6(7) and the lid body 9(10) are made from different materials.
  • the materials of the coil connection terminal 6(7) and the lid body 9(10) are different from a material of the wires 4a(5a) of the coil winding of the heating coil 3.
  • the coil connection terminal 26(27) and the lid body 9(10) are made from a same material different from a material from which the wires 4a(5a) of the coil winding are made.
  • the coil connection terminal 26(27) and the lid body 29(30) are made from a stainless material or copper phosphate, in contrast to the wires 4a(5a) of the coil winding made from aluminum or aluminum alloy.
  • the coil connection terminal 26(27) and the lid body 29(30) made from a same material are unified as shown in Fig. 5 .
  • Difference in specific resistance of the coil connection terminal 26(27) and the lid body 29(30) becomes zero. Consequently, an occurrence of an abnormal heat due to a high current flow is further suppressed. Thereby secures a high reliability in the joint between the coil winding of the heating coil and the coil connection terminal for supplying the heating coil with a current.
  • Fig. 6 is a cross-section view showing a joint between an end of a coil winding of a heating coil and a coil connection terminal in an induction-heating cooker according to the third embodiment. Elements identical to the elements of the first embodiment have same reference numbers.
  • Configurations of a coil connection terminal 36(37) and a lid body 39(40) of the third embodiment are the same as the configurations of the coil connection terminal 6(7) and the lid body 9(10) of the first embodiment.
  • the coil connection terminal 6(7) and the lid body 9(10) are made from different materials.
  • the materials of the coil connection terminal 6(7) and the lid body 9(10) are different from a material of the wires 4a(5a) of the coil winding of the heating coil 3.
  • the coil connection terminal 36(37), the lid body 39(40), and the wires 4a(5a) of the coil winding are made from a same material.
  • the coil connection terminal 36(37) and the lid body 39(40) are made from aluminum or aluminum alloy as well as the wires 4a(5a) of the coil winding.
  • the wires 4a(5a) of the coil winding of the heating coil 3, the coil connection terminal 36(37), and the lid body 39(40) made form a same material are unified. Tripartite differences in specific resistance become zero. Consequently, an occurrence of an abnormal heat due to a high current flow is further suppressed. Thereby secures a high reliability in the join between the coil winding of the heating coil and the coil connection terminal for supplying the heating coil with a current.
  • Fig.7 schematically shows a coil connection terminal 46 of an induction-heating device according to the fourth embodiment.
  • elements identical to the elements of the first embodiment have same reference numbers.
  • the coil connection terminals 6, 7 are made by press-cutting a thin plate in desired configuration and then folding the press-cut plate partly, that is, made from a single material.
  • the coil connection terminal 46 is made from a cladding material made by joining at least two materials, as shown in Fig. 7 .
  • the coil connection terminal 46 is made from the cladding material made by joining a material (a first material) identical to a material of the wires 4a of the coil winding of the heating coil 3 and a material (a second material) identical to a material of the crimp-type terminal 15 connected to the control unit (not shown).
  • the coil connection terminal 46 is made from the cladding material made by joining a first member 46a made from aluminum which is the material of the wires 4a of the coil winding of the heating coil 3 and a second member 46b made from a stainless material or copper phosphate which is the material of the crimp-type terminal 15.
  • a groove part 46c joined to the wires 4a of the coil winding of the heating coil 3 is formed on the first member 46.
  • the lid body 9 disposed in the groove part 46c is made from the material identical to the materials of the wires 4a and the first member 46a, for example, aluminum. A joining of the wires 4a, the groove part 46c, and the lid body 9 is performed in the same manner as the first embodiment.
  • a threaded part 46d engaged with the screw 16 passing through the through-hole of the crimp-type terminal 15 is formed on the second member 46b.
  • a washer 50 is disposed between the crimp-type terminal 15 and the second member 46b.
  • the material of the second member 46b is not required to be identical to the materials of the crimp-type terminal 15, the screw 16, and the washer 50 and may be any material having a small ionization tendency difference and a small potential difference with respect to the crimp-type terminal 15, the screw 16, and the washer 50 and having a small specific resistance.
  • the joint between the wires 4a of the coil winding of the heating coil 3 and the coil connection terminal 46 can have a high reliability and can suppress an occurrence of an abnormal heat, as well as the third embodiment.
  • Fig. 8 is a perspective view showing a portion of an induction-heating device according to the fifth embodiment. Elements identical to the elements of the first embodiment have same reference numbers.
  • the induction-heating device 51 has a substrate 52.
  • the substrate 52 is placed and fixed on a substrate holder part 53 integrally formed on the coil base 2.
  • a coil connection terminal 54 joined to one end 4 of the coil winding of the heating coil 3 (specifically, to wires at the end 4) and a coil connection terminal 55 joined to the other end 5 (specifically, to wires at the end 5) are mounted on the substrate 52.
  • Unit connection terminals 56, 57 are mounted on the substrate 52 and electrically connected to the crimp-type terminals 15 attached to the leads 17, 18 of the control unit (not shown) for supplying the heating coil 3 with a current.
  • the substrate 52 has a wiring pattern (not shown) for electrically connecting one coil connection terminal 54 and one unit connection terminal 56 and a wiring pattern (not shown) for electrically connecting the other coil connection terminal 55 and the other unit connection terminal 57.
  • the wiring patterns are, for example, patterns made from copper.
  • the coil connection terminals 54, 55 mounted on the substrate 52 have groove parts 54c, 55c accommodating wires at the ends 4, 5 of the coil winding of the heating coil 3, as well as the coil connection terminals 6, 7.
  • groove parts 54c, 55c lid bodies 58 59 as well as the lid bodies 9, 10 of the first embodiment are disposed.
  • the ends 4, 5 of the coil winding of the heating coil 3 and the coil connection terminals 54, 55 may be performed after the heating coil 3 has been placed on the coil base 2 and the substrate 52 has been placed on the substrate holder part 53 or before placing thereof.
  • the joining of the ends 4,5 of the coil winding and the coil connection terminals 54, 55 may be performed with the heating coil 3 having been placed on the coil base 2 and the substrate 52 not placed on the substrate holder part 53.
  • the crimp-type terminals 15 attached to the leads 17, 18 of the control unit are connected to the unit connection terminals 56, 57 mounted on the substrate 52 by, for example, screws.
  • the control unit supplies the heating coil 3 with a high frequency current through the leads 17, 18, the crimp-type terminals 15, the unit connection terminals 56, 57, the wiring patterns on the substrate 52, the coil connection terminals 54, 55, and the wires in the groove parts 54c, 55c of the coil connection terminals 54, 55.
  • the joint between the coil winding of the heating coil 3 and the coil connection terminals 54, 55 in the fifth embodiment can have a high reliability, as well as the joint between the coil winding of the heating coil 3 and the coil connection terminals 6, 7.
  • Fig. 9 is a perspective view showing a portion of an induction-heating device according to the sixth embodiment. Elements identical to the elements of the fifth embodiment have same reference numbers.
  • the coil connection terminals 54, 55 and the unit connection terminals 56, 57 are mounted on the single substrate 52.
  • the coil connection terminals 54, 55 are mounted on separate substrates 52A, 52B different form each other.
  • the two substrates 52A, 52B are fixed on the substrate holder part 53 with a gap 62 therebetween.
  • the coil connection terminal 54 and the unit connection terminal 56 are mounted on the substrate 52A.
  • the substrate 52A has a wiring pattern (not shown), such as pattern made from copper, electrically connecting the coil connection terminal 54 and the unit connection terminal 56.
  • the coil connection terminal 55 and the unit connection terminal 57 are mounted on the substrate 52B.
  • the substrate 52B has a wiring pattern (not shown), such as pattern made from copper, electrically connecting the coil connection terminal 55 and the unit connection terminal 57.
  • the joint between the coil winding of the heating coil 3 and the coil connection terminals 54, 55 for supplying the heating coil 3 with a current can have a high reliability.
  • the substrates 52A, 52B respectively are more compact than the substrate 52 of the fifth embodiment. Also, the coil connection terminals 54, 55 are mounted on separate substrates 52A, 52B different from each other. Therefore, the induction-heating device of the sixth embodiment is easier in assembly than that of the fifth embodiment.
  • one end 4 of the coil winding of the heating coil 3 is joined to the coil connection terminal 54 mounted on the substrate 52A and then the substrate 52A is fixed on the substrate holder part 53.
  • the other end 5 of the coil winding is joined to the coil connection terminal 55 mounted on the substrate 52B and then the substrate 52B is fixed on the substrate holder part 53.
  • Such method is easier in assembly than the case that the substrate 52 joined to both ends 4, 5 of the coil winding is fixed on the substrate holder part 53.
  • Figs. 10 and 11 are perspective views showing the joint part between one end 4 of the coil winding of the heating coil 3 and the groove part 54c of the one coil connection terminal 54 in the induction-heating device according to the sixth embodiment.
  • a coil connection terminal and a lid body respectively have engagement parts engaging with each other, and the engagement parts are configured such that the lid body is located with respect to a groove part of the coil connection terminal, as well as the groove part 54c of the coil connection terminal 54 and the lid body 58 of the sixth embodiment shown in Figs. 10 and 11 .
  • the lid body 58 forms a shape having two protrusions 58a projecting in a width direction of the groove part 54c of the coil connection terminal 54, more specifically, is formed in the shape of "T".
  • slots 54d capable to engage with the protrusions 58a of the lid body 58 are formed on wall parts 54b defining the groove part 54c.
  • a relative position of the lid body 58 with respect to the groove part 54c of the coil connection terminal 54 (a position in an extending direction of the groove par 54c) is unambiguously defined by engaging the protrusions 58a of the lid body 58 with the slots 54d of the wall parts 54b.
  • Engagement parts of a coil connection terminal and a lid body are not limited to the slots 54 and the protrusions 58a.
  • the lid body 9 has recesses 9a opposite each other (that is, is formed in the shape of "H").
  • the wall parts 6b of the coil connection terminal 6 engage with the recesses 9a thereof.
  • the coil connection terminal is mounted on the substrate with a groove part thereof not overlapping with the substrate in a vertical direction, and the substrate is placed on a substrate holder part with the groove part of the coil connection terminal not overlapping with the substrate holder part in the vertical direction.
  • the coil connection terminal 54 is mounted on the substrate 52A such that the groove part 54c of the coil connection terminal 54 is not overlapping with the substrate 52A in the vertical direction. That is, in the sixth embodiment, the substrate 52A has a shape in which a portion thereof positioned under the groove part 54c of the coil connection terminal 54 is eliminated.
  • the substrate 52A is placed on the substrate holder part 53 such that the groove part 54c of the coil connection terminal 54 is not overlapping with the substrate holder part 53 in the vertical direction. That is, in the sixth embodiment, the substrate holder part 53 has a shape in which a portion thereof positioned under the groove part 54c of the coil connection terminal 54 is eliminated.
  • the anvil 11 can contact with the groove part 54c of the coil connection terminal 54 from below when an ultrasonic-welding is performed. That is, with the substrate 52, on which the coil connection terminal 54 is mounted, being placed on the substrate holder part 53, the ultrasonic-welding for joining the groove part 54c of the coil connection terminal 54, the wires of the coil winding, and the lid body 58 can be performed.
  • An induction-heating device having a high reliability can be used in, for example, an induction-heating cooker using an induction-heating device as a high heat source by supplying a heating coil of the induction-heating device with a high current.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Induction Heating Cooking Devices (AREA)
EP14737674.3A 2013-01-09 2014-01-08 Induktionsheizer und induktionskocher Withdrawn EP2945464A4 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16190677.1A EP3139703B1 (de) 2013-01-09 2014-01-08 Induktionsvorrichtung und induktionsherd

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2013001489 2013-01-09
JP2013001488 2013-01-09
PCT/JP2014/000041 WO2014109287A1 (ja) 2013-01-09 2014-01-08 誘導加熱体および誘導加熱調理器

Related Child Applications (1)

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EP16190677.1A Division EP3139703B1 (de) 2013-01-09 2014-01-08 Induktionsvorrichtung und induktionsherd

Publications (2)

Publication Number Publication Date
EP2945464A1 true EP2945464A1 (de) 2015-11-18
EP2945464A4 EP2945464A4 (de) 2016-03-16

Family

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EP14737674.3A Withdrawn EP2945464A4 (de) 2013-01-09 2014-01-08 Induktionsheizer und induktionskocher
EP16190677.1A Active EP3139703B1 (de) 2013-01-09 2014-01-08 Induktionsvorrichtung und induktionsherd

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EP (2) EP2945464A4 (de)
JP (1) JPWO2014109287A1 (de)
CN (1) CN105309042B (de)
ES (1) ES2668069T3 (de)
WO (1) WO2014109287A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3547799A1 (de) * 2018-03-27 2019-10-02 LG Electronics Inc. Induktionsheizvorrichtung mit reduzierter anzahl von kabelbäumen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016147377A1 (ja) * 2015-03-19 2016-09-22 日立金属株式会社 端子付きケーブル及びその製造方法
CN110355965B (zh) * 2019-06-25 2024-03-19 宁波长飞亚塑料机械制造有限公司 一种加热器

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
DE3323576A1 (de) * 1983-06-30 1985-01-10 Siemens AG, 1000 Berlin und 8000 München Extrem widerstandsarme verbindungseinrichtung zwischen den endstuecken zweier supraleiter
JP3823076B2 (ja) * 2002-08-15 2006-09-20 松下電器産業株式会社 誘導加熱用コイル
US8129664B2 (en) * 2005-02-04 2012-03-06 Panasonic Corporation Induction heater
JP2007012329A (ja) * 2005-06-28 2007-01-18 Hitachi Cable Ltd 接続端子、接続端子付きアルミケーブル、超音波溶接方法、および超音波接続装置
JP5202083B2 (ja) 2008-04-18 2013-06-05 株式会社オートネットワーク技術研究所 端子金具付き電線の製造方法及び端子金具付き電線
JP5218240B2 (ja) 2009-04-14 2013-06-26 株式会社デンソー アルミ線用端子装置およびその製造方法
JP5183576B2 (ja) * 2009-06-15 2013-04-17 三菱電機株式会社 電磁誘導加熱調理器
JP5240104B2 (ja) * 2009-07-01 2013-07-17 パナソニック株式会社 誘導加熱調理器
JP5240105B2 (ja) * 2009-07-01 2013-07-17 パナソニック株式会社 誘導加熱調理器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3547799A1 (de) * 2018-03-27 2019-10-02 LG Electronics Inc. Induktionsheizvorrichtung mit reduzierter anzahl von kabelbäumen
US11140752B2 (en) 2018-03-27 2021-10-05 Lg Electronics Inc. Induction heating device having reduced number of wire harnesses

Also Published As

Publication number Publication date
WO2014109287A1 (ja) 2014-07-17
ES2668069T3 (es) 2018-05-16
CN105309042A (zh) 2016-02-03
JPWO2014109287A1 (ja) 2017-01-19
CN105309042B (zh) 2017-06-16
EP3139703B1 (de) 2018-03-14
EP3139703A1 (de) 2017-03-08
EP2945464A4 (de) 2016-03-16

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