JP2008067532A - Charger for portable terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a charger ready for charging a plurality of types of portable terminals away from home by enabling to charge the portable terminals away from home without requiring an AC adaptor having a long cord. <P>SOLUTION: The charger 20 supplies power to a secondary coil 11 of the cellular phone terminal 10 using electromagnetic induction from a primary coil 21, thereby charging a battery of the cellular phone terminal 10. The charger 20 is configured so that coil surfaces of both the primary coil 21 and the secondary coil 11 of the cellular phone terminal 10 can be aligned and different types of cellular phones having different thicknesses can be held using a front case 22, a rear case 23 and extensible arm portions 25, 26. The charger 20 has a blade 30 for connecting the charger to a domestic-use outlet, and connector receptacle used for inserting a power supply connector connected to an AC adaptor, and the charger 20 can be used while switching them. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile terminal charger for charging a battery of a mobile terminal such as a mobile phone terminal.

  In recent years, small mobile terminals such as mobile phone terminals and PDAs have become widespread. These portable terminals generally operate with electric power supplied from a rechargeable battery. In addition, the battery is generally charged by a charger dedicated to the portable terminal.

  Here, the charging method for the battery is roughly divided into a contact type charging method in which charging is performed with both charging terminals of the portable terminal and the charger being in contact with each other without using a contact portion such as a charging terminal. There is a non-contact type charging method for charging. In the case of the contact-type charging method, high-accuracy alignment is required to bring the charging terminals of both the mobile terminal and the charger into contact with each other, and the charging terminals are exposed to the outside. While contact failure may occur due to terminal oxidation or corrosion, the contactless charging method does not require high-accuracy alignment between terminals and causes contact failure problems. It is characterized by not.

  As an example of a device to which the non-contact charging method is applied, Japanese Patent Application Laid-Open No. 9-223520 discloses a patent document (Patent Document 1) in which a secondary battery housing insertion portion is provided in a casing of a charging device. When the secondary battery storage body is attached to the secondary battery storage body insertion part for charging, a planar primary wire provided near the secondary battery storage body insertion part and the side surface of the secondary battery storage body When the secondary battery housing is attached to the secondary battery housing insertion portion, non-contact charging is performed by electromagnetic induction of the primary wire and the secondary wire. A charging device is disclosed that is adapted to perform.

  In addition, the published patent publication (Patent Document 2) of Japanese Patent Application No. 2000-139033 includes a charger having a built-in primary coil, and a charged object having a secondary coil and a storage battery. A charging device is disclosed that includes holding means for adjusting the charger and the object to be charged to at least two stages of charging intervals when charging the storage battery by electromagnetic induction action of both coils. Yes.

JP-A-9-223520 (FIG. 1) JP 2000-139033 A (FIG. 1)

  By the way, a charger for a mobile phone terminal which is an example of a mobile terminal is generally connected to an AC adapter having a plug blade connected to a household outlet and an AC-DC converter, and a cord extending from the AC adapter. In addition, a holder unit that holds the mobile phone terminal and charges the mobile phone terminal is set.

  In many cases, an I / O connector that can be fitted to a connector of a mobile phone terminal is provided at the tip of the cord extending from the AC adapter. In this case, the holder portion is connected to the I / O connector. An electric outlet is provided, and the electric power supplied from the AC adapter through the electric outlet is supplied as charging power for the mobile phone terminal.

  For these reasons, for example, when it is necessary to charge the mobile phone terminal on the go, such as when going on a long-term trip, the user of the terminal uses the I Remove the / O connector and take out the AC adapter, insert the plug blade of the AC adapter into a household outlet on the go, and connect the I / O connector provided at the end of the cord extending from the AC adapter to the mobile phone terminal It will be charged by plugging into the connector.

  As described above, conventionally, when charging a mobile phone terminal on the go, it is necessary to take out the AC adapter connected to the cord, and the long cord of the AC adapter is bulky and very inconvenient to carry. At the same time, it will be difficult to store and handle long cords.

  In the case of a conventional charger, the AC adapter may have a specification common to each model of the mobile phone terminal, but the holder portion is generally dedicated to each model. For this reason, for example, when a family member goes out on a trip etc. with a mobile phone terminal of a different model, generally take out only the AC adapter of the above-mentioned common specifications and take it up to a dedicated holder for each model. Is not done.

  The present invention has been proposed in view of such a situation, and it is possible to charge a mobile terminal on the go without taking an AC adapter that is long and bulky and difficult to handle, Furthermore, it aims at providing the portable terminal charger which can respond also, for example, even when charging several types of portable terminals on the go.

  The mobile terminal charger of the present invention includes a primary side coil that supplies power to the secondary side coil provided in the mobile terminal by electromagnetic induction, the primary side coil, and the secondary side coil provided in the mobile terminal. A plug blade storage for storing a terminal holding portion having an adjustment mechanism for holding portable terminals having different thicknesses at the same time as aligning the positions of the coil surfaces of the two and a plug blade portion for connecting to a predetermined outlet When power is supplied via the plug blade portion, a connector insertion port for inserting a power supply connector connected to a predetermined AC adapter, the power from the plug blade portion is converted into a predetermined high-frequency current, A primary circuit unit that converts power from the power connector into a predetermined high-frequency current and supplies the power to the primary coil when power is supplied via the connector. To solve the problem was.

  That is, according to the present invention, power is supplied to the mobile terminal by electromagnetic induction, and the mobile terminal can be charged using two types of power sources, that is, a predetermined outlet and a predetermined AC adapter. And an adjustment mechanism for holding at least portable terminals having different thicknesses.

  In the present invention, since the power is supplied to the portable terminal by electromagnetic induction, a charging terminal is unnecessary, and the portable terminal is connected using two types of power sources: a predetermined outlet and a predetermined AC adapter. Because it is made chargeable, there is no need to take an AC adapter with a large cord or the like to the outside, and it is equipped with an adjustment mechanism that holds at least mobile terminals with different thicknesses. It can also be used when charging on the go.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In this embodiment, as an example of the mobile terminal charger of the present invention, a battery charger that holds a mobile phone terminal and has a function of non-contact charging the battery of the mobile phone terminal by electromagnetic induction is cited. Of course, the content described here is merely an example, and it goes without saying that the present invention is not limited to this example. For example, for various portable terminals driven by a rechargeable battery such as PDA (Personal Digital Assistants). It can also be applied to other chargers.

[Mobile phone terminals supporting contactless contactless charging]
1 and 2 show a schematic appearance of a mobile phone terminal 10 having a secondary coil 11 in which charging power is transmitted from a charger by electromagnetic induction. 1 is a schematic external view of the mobile phone terminal 10 of the present embodiment as viewed from the front display 12 side, and FIG. 2 is a schematic view of the mobile phone terminal 10 of the present embodiment as viewed from the side of the casing. An external view is shown.

  As shown in FIGS. 1 and 2, the secondary coil 11 is a flat coil wound in a ring shape or a spiral shape. For example, the back side of the mobile phone terminal 10 (in this example, with respect to the display side). The flat surface (coil surface) side in the housing on the back side is disposed so as to face the housing back side of the terminal 10. In the secondary side coil 11, a current or a voltage is induced by a magnetic flux or a line of magnetic force generated from a primary side coil 21 provided in a charger 20 described later. Then, the current or voltage induced in the secondary coil 11 is charged into a battery (secondary battery) that is also not shown through a protection circuit that is not shown in the mobile phone terminal 10. Supplied as electric power.

[Charger for non-contact type non-contact charging method]
3 to 9 show a schematic appearance of a charger 20 according to an embodiment of the present invention that charges the mobile phone terminal 10 by a non-contact non-contact charging method using electromagnetic induction. In addition, the schematic external view which looked at the charger 20 of this embodiment from the front side in FIG. 3, FIG. 4 the schematic external view which looked at the charger 20 of this embodiment from the right side of FIG. FIG. 5 is a schematic cross-sectional view of the charger 20 according to the present embodiment taken along the alternate long and short dash line C in FIG. 3 and viewed from the right side, and FIG. 6 illustrates the charger 20 according to the present embodiment with respect to the front of FIG. FIG. 7 is a schematic external view seen from the back side, FIG. 7 is a schematic cross-sectional view seen from the right side in the same manner as FIG. 5 with the mobile phone terminal 10 held by the charger 20 of this embodiment, and FIG. 9 is a schematic cross-sectional view viewed from the right side when the charger 20 of the embodiment is used as a stand for the mobile phone terminal 10, and FIG. 9 shows the charger 20 of the present embodiment with a thickness larger than that of FIGS. 7 and 8. FIG. 9 is a schematic cross-sectional view of the large mobile phone terminal 60 viewed from the right side as in FIG. 7.

  As shown in FIGS. 3 to 9, the charger 20 according to the embodiment of the present invention includes a front case 22, a back case 23, and a plug blade storage portion 24.

  The front case 22 is provided between two curved arm portions 22a and 22a each curved toward the back case 23, and between the two curved arm portions 22a and 22a, and the width of the mobile phone terminal 10 in the short direction. And a notch portion 22c that is at least wider than that. That is, in the front case 22 of the present embodiment, the two curved arm portions 22a and 22a and the cutout portion 22c are arranged so that when the mobile phone terminal 10 is mounted on the charger 20 of the present embodiment, the mobile phone The terminal 10 can be held so as to be sandwiched from both sides in the short direction.

  A cushion portion 29 is attached to the surface of the front case 22 on the back case 32 side. The cushion portion 29 is used to prevent the surface of the mobile phone terminal 10 from being damaged and to prevent the mobile phone terminal 10 from being displaced when the mobile phone terminal 10 is placed on the charger 20 of the present embodiment. Is provided.

  The back case 23 is provided corresponding to the front case 22, and generates a magnetic flux or a line of magnetic force that induces a current or voltage to the secondary coil 11 of the mobile phone terminal 10. A primary side coil 21 is provided. The primary coil 21 is a flat coil wound in a ring shape or a spiral shape so that the flat coil surface side faces the front case 22 side in the housing of the back case 23 of the charger 20. Is arranged.

  Further, the surface of the back case 23 on the front case 22 side is provided with a groove that is at least wider than the width of the mobile phone terminal 10 in the short direction. That is, the groove is provided to hold the mobile phone terminal 10 so as to be sandwiched from both sides in the short direction, and to be able to slide somewhat in the long direction of the mobile phone terminal 10.

  Further, on the surface of the back case 23 on the front case 22 side, the mobile phone terminal 10 is placed in the groove on the other end 22c side corresponding to the two curved arm portions 22a and 22b of the front case 22. When inserted, it abuts against the longitudinal end of the mobile phone terminal 10 to regulate the position and movement (for example, sliding down) of the terminal 10 and at the same time, the secondary coil of the mobile phone terminal 10 A position restricting portion 27 such as a pole shape or a plate shape is provided for aligning the position 11 with the primary coil 21 in the back case 23. The position restricting portion 27 may be formed of a fixed length member that does not change the height on the surface of the back case 23, and the height of the position restricting portion 27 can be arbitrarily changed. It may have a structure. Further, the arrangement position of the position restricting portion 27 on the surface of the back case 23 may be attached to a fixed position where the position does not change, and the position is arbitrarily moved in the groove direction of the groove portion, for example. You may have the position adjustment structure for enabling.

  In the charger 20 of the present embodiment, for example, four telescopic arm portions (two telescopic arm portions 25 and 26 in FIGS. 4 and 5) are provided on both surfaces corresponding to the front case 22 and the back case 23. Only shown) is attached. The number of extendable arm portions is not limited to four, but may be two or three.

  The telescopic arm portion 25 is configured such that, for example, the other arm portion 25b can be accommodated and pulled out in the axial direction in one arm portion 25a (that is, the two arm portions can be stretched together). In addition, a rotation shaft 43 is provided at the base of one arm 25a of the telescopic arm 25 (the end that is not the open end of the both ends of the arm, hereinafter the same), and the rotation. The shaft 43 is pivotally supported by a pedestal portion 25 c provided on the surface of the back case 23. A rotating shaft 41 is provided at the base of the other arm portion 25b of the telescopic arm portion 25, and the rotating shaft 41 is supported by a pedestal portion 25d provided on the surface of the front case 22. Yes. Similarly, the telescopic arm part 26 is configured such that the other arm part 26b can be accommodated and pulled out (extendable) in the axial direction in one arm part 26a, and the base part of the one arm part 26a has A rotation shaft 44 is provided. The rotation shaft 44 is pivotally supported by a pedestal portion 26c provided on the surface of the back case 23, and a rotation shaft 42 is provided at the base portion of the other arm portion 26b. The rotation shaft 42 is pivotally supported by a pedestal portion 26 d provided on the surface of the front case 22. In addition, the expansion-contraction arm parts 25 and 26 may be provided with the mechanism which stops the expansion / contraction at an arbitrary expansion / contraction position by stepless expansion / contraction, and may be provided with the mechanism which can set an expansion / contraction position in steps.

  That is, according to the battery charger 20 of the present embodiment, the mobile phone terminal 10 is shortened in the short direction by the two curved arm portions 22a and 22a and the notch portion 22c provided in the front case 22 and the groove portion of the back case 22. The mobile phone terminal 10 is held so as not to move in the thickness direction by the extendable telescopic arm portions 25 and 26 and the front case 22 and the back case 23. The position restriction unit 27 holds the mobile phone terminal 10 so as not to move in the longitudinal direction.

  Moreover, according to the charger 20 of this embodiment, as shown in FIG.7 and FIG.9, the space | interval between the front case 22 and the back case 23 is changed according to the extendable width | variety of the said expansion-contraction arm part 25,26. And by adjusting, it is possible to hold mobile phone terminals having different thicknesses.

  Moreover, according to the charger 20 of this embodiment, by rotation of the said rotating shafts 41-44, the said front case 22 and the back case 23 can rotate the said rotating shafts 41-44 as an example as FIG. It can be moved relatively in the direction. In addition, the rotating shafts 41 to 44 may be provided with a mechanism that stops the rotation at an arbitrary rotational position in a stepless rotation, or may be provided with a mechanism that can set the rotational position stepwise.

  Here, in the present embodiment, the usage pattern as shown in FIG. 8 can be adopted when the charger 20 of the present embodiment is used as a cradle that can charge a mobile phone terminal, for example. As described above, when the charger 20 of the present embodiment is used as a pedestal in the usage pattern as shown in FIG. 8, the inclined surface 28 provided at the end of the back case 23 and the plug blade storage portion 24 and the above table. The end 22b of the case 22 comes into contact with the desk or the like, and the charger 20 can be placed on the desk or the like in a stable state. In other words, the charger 20 according to the present embodiment includes, for example, the inclined surface 28 provided at the end of the back case 23 and the plug blade storage portion 24 when used as a stand in the usage pattern as shown in FIG. The end 22b of the front case 22 is arranged substantially in a straight line.

  Further, the plug blade storage portion 24 of the charger 20 of the present embodiment is provided on the back side of the back case 23 with respect to the surface on the front case 22 side. The plug blade storage section 24 is provided with a plug blade section 30 that can be connected to a household outlet. The plug blade section 30 is stored in a storage groove 32 of the plug blade storage section 24 by a rotary shaft 31. And a state in which the plug blade is raised from the storage groove 32. An AC adapter circuit is built in the plug blade storage unit 24. In the charger 20 of the present embodiment, when the plug blade portion 30 is raised from the storage groove portion 32 and the plug blade is connected to a household outlet, the power from the built-in AC adapter circuit is supplied to the back case 23. It supplies to the primary side coil 21 in the inside.

  Further, in the charger 20 of the present embodiment, the plug blade storage unit 24 is also provided with an insertion port for an I / O connector 50 connected to an AC adapter (not shown) with a cord 51. That is, when the I / O connector 50 is connected, the charger 20 of this embodiment uses the power supplied from the AC adapter via the I / O connector 50 to the power in the back case 23. The primary coil 21 is supplied. In addition, the said I / O connector 50 is connected, for example like FIG. 8, when using the power receiver 20 of this embodiment as a stand.

  As described above, when the charger 20 according to the present embodiment causes the plug blade 30 to be connected to the household outlet by causing the plug blade 30 to be connected to the household outlet, the power obtained from the household outlet is converted to the plug blade. When the I / O connector 50 is connected to the insertion port of the plug blade storage unit 24 through the AC adapter circuit in the storage unit 24, the AC adapter is connected through the I / O connector. Can be supplied to the primary side coil 21. In addition, the charger 20 of this embodiment is connected to the primary coil 21 when the plug blade portion 30 is connected to a household outlet and when the AC adapter is connected via the I / O connector 50. The power supply can be automatically switched. For example, when both the plug blade 30 and the household outlet are connected and the AC adapter is connected through the I / O connector 50 at the same time. It is also possible to preferentially use either one.

[Block configuration of charging circuit]
FIG. 10 shows a schematic block diagram of a charging circuit configuration on the charger 20 side and a power receiving circuit configuration on the mobile phone terminal side.

  In FIG. 10, the primary circuit 71 of the charger 20 is supplied with AC 100V power from a household outlet connected to the plug blade 30 or power supplied from the AC adapter via the I / O connector 50. Entered. The primary circuit 71 converts the supplied power into a predetermined high-frequency current and supplies it to the primary coil 21. Thereby, in the primary side coil 21, the magnetic flux or line of magnetic force according to the said high frequency current which flows through the inside of a coil is produced | generated.

  In the secondary coil 11 of the mobile phone terminal, a current or voltage is induced by the magnetic flux or magnetic field lines from the primary coil 21 of the charger 20. The current or voltage induced in the secondary side coil 11 is converted into the charging power of the battery 80 by the secondary side circuit 81 which is a protection circuit. Thereby, the battery 80 is charged.

[Summary]
As described above, according to the charger 20 according to the present embodiment, the distance between the front case 22 and the back case 23 can be arbitrarily changed and adjusted by the extendable arm portions 25 and 26, and the front case 22 and the back case 23 can be adjusted. Since the mobile phone terminal is sandwiched between the two, the opposing positions of both the coil surfaces of the primary coil 21 of the charger 20 and the secondary coil 11 of the mobile phone terminal can be matched. Even terminals having different thicknesses (for example, terminals of different models) such as the terminals 10 and 60 can be charged respectively. Therefore, a single charger 20 allows a plurality of models of mobile phone terminals to be on the go. It is also possible to charge the battery with the same method.

  Further, the charger 20 of the present embodiment can arbitrarily change the distance between the front case 22 and the back case 23. If the distance between the front case 22 and the back case 23 is minimized, the charger 20 has a very compact size. Thus, when the charger 20 is taken out to the outside or the like, it is very easy to carry without being bulky.

  Further, according to the charger 20 of the present embodiment, both a charging method in which the plug blade portion 30 is inserted into a household outlet and a charging method in which an AC adapter is used through the I / O connector 50 can be used. Therefore, the user can appropriately select the most suitable charging method among those charging methods. For example, when the mobile phone terminal needs to be charged on the go. Makes it possible to charge a mobile phone terminal on the go without taking an AC adapter that is bulky and difficult to handle, while charging a mobile phone terminal using an AC adapter at home etc. It becomes possible.

  In addition, according to the charger 20 of the present embodiment, since a non-contact type non-contact charging method is adopted, for example, when a mobile phone terminal is charged at an outlet provided in a washroom of a travel destination, etc. In addition, the battery can be charged without being affected by wetness, and problems such as corrosion of contact points due to wetness do not occur.

  The above description of the embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made according to the design or the like as long as the technical idea according to the present invention is not deviated.

  The form of the charger 20 of the above-described embodiment is an example, and other designs may be used.

  Further, the primary coil 21 of the charger 20 may be provided not on the back case 23 but on the front case 22 side. In this case, the high-frequency current generated by the primary side circuit 71 is sent to the primary side coil 21 of the front case 22 through, for example, a cable passed through the extension arm portion or the like. When the primary circuit 71 is also provided in the front case 22, the power supplied from the plug blade 30 or the I / O connector 50 is displayed through, for example, a cable passed through the telescopic arm or the like. It is sent to the primary side circuit 71 of the case 22. Furthermore, the primary coil 21 of the charger 20 may be provided in both the back case 23 and the front case 22, and in this case, which case side the secondary coil 11 of the mobile phone terminal is on. Depending on the holding state, the primary coil 21 of either the back case 23 or the front case 22 may be switched to use.

  Further, when holding the mobile phone terminal, it is not limited to the case of sandwiching between the front case 22 and the back case 23. For example, between the flat coil surfaces of both the primary side coil 11 and the secondary side coil 21 Any other configuration may be used as long as the mobile phone terminal can be held while performing alignment.

It is the schematic external view which looked at the mobile telephone terminal provided with the secondary side coil in which charging power is transmitted from a charger by electromagnetic induction from the front display side. It is the schematic external view which looked at the mobile telephone terminal provided with the secondary side coil in which charging electric power is transmitted from a charger by electromagnetic induction from the housing side surface side. It is the schematic external view which looked at the charger of this embodiment which charges a mobile telephone terminal by the non-contact-type non-contact charge system by electromagnetic induction from the front side. It is the schematic external view which looked at the charger of embodiment of this invention which charges a mobile telephone terminal with the non-contact-type non-contact charge system by electromagnetic induction from the right side surface side. It is the schematic sectional drawing which cut | disconnected the charger of embodiment of this invention which charges a mobile telephone terminal with the non-contact-type non-contact charge system by electromagnetic induction, and cut | disconnected by the dashed-dotted line in FIG. It is the schematic external view which looked at the charger of this embodiment which charges a mobile telephone terminal by the non-contact type non-contact charge system by electromagnetic induction from the back side with respect to the front of FIG. FIG. 6 is a schematic cross-sectional view of a charger according to an embodiment of the present invention that charges a mobile phone terminal by a non-contact type non-contact charging method using electromagnetic induction, viewed from the right side as in FIG. It is the schematic sectional drawing seen from the right side at the time of using the charger of this embodiment which charges a mobile telephone terminal by the non-contact-type non-contact charge system by electromagnetic induction as a stand of a mobile telephone terminal. The charger according to the embodiment of the present invention for charging the mobile phone terminal by the non-contact type non-contact charging method using electromagnetic induction holds the mobile phone terminal having a thickness larger than that of FIGS. FIG. It is a schematic block diagram of a charging circuit configuration on the charger side and a power receiving circuit configuration on the mobile phone terminal side.

Explanation of symbols

  10, 60 mobile phone terminal, 11 secondary coil, 12 display, 20 charger, 21 primary coil, 22 front case, 23 back case, 24 plug blade storage part, 25, 26 telescopic arm part, 25a, 25b, 26a, 26b Arm part, 25c, 25d, 26c, 26d Pedestal part, 27 Position restriction part, 28 Inclined surface, 29 Cushion part, 30 Plug blade part, 32 Storage groove part, 31, 41-44 Rotating shaft, 50 I / O Connector, 51 cord, 71 Primary side circuit, 80 battery, 81 Secondary side circuit

Claims (8)

A primary coil that supplies power by electromagnetic induction to a secondary coil provided in the mobile terminal;
At the same time as aligning the positions of the coil surfaces of the primary side coil and the secondary side coil provided in the mobile terminal, at the same time, a terminal holding unit provided with an adjustment mechanism for holding mobile terminals having different thicknesses;
A plug blade storage portion for storing a plug blade portion for connection to a predetermined outlet;
A connector insertion port for inserting a power connector connected to a predetermined AC adapter;
When power is supplied through the plug blade, the power from the plug blade is converted into a predetermined high-frequency current, and when power is supplied through the power connector, the power from the power connector is converted. A primary side circuit unit that converts to a predetermined high frequency current and supplies the primary side coil to the primary side coil;
A portable terminal charger. The terminal holding unit includes first and second cases, and an interval adjusting unit that adjusts an interval between corresponding surfaces of the first and second cases. , By sandwiching the portable terminal in a state where the coil surfaces of both the primary coil and the secondary coil of the portable terminal are matched by the corresponding surfaces of the second two cases,
The portable terminal charger according to claim 1, wherein the primary coil is disposed in at least one of the first and second cases.   The distance adjusting portion has extendable and retractable arm portions provided on both side surfaces corresponding to the first and second cases, and the first and second cases are expanded and contracted by the extension and contraction of the arm portions. The portable terminal charger according to claim 2, wherein an interval between corresponding surfaces is adjusted. The arm portion has a rotation shaft at both ends in the expansion and contraction direction,
The rotating shaft is pivotally supported by a pedestal provided on the surfaces of the first and second cases,
The portable terminal charger according to claim 3, wherein the distance adjusting unit relatively moves the first and second cases in a direction in which the rotation shaft can rotate. The interval adjusting unit is
Having arm portions provided on both sides corresponding to the first and second cases,
The arm portion has a rotation shaft at both ends thereof,
The rotating shaft is pivotally supported by a pedestal provided on the surfaces of the first and second cases,
The portable terminal charger according to claim 2, wherein the first and second cases are relatively moved in a direction in which the rotation shaft is rotatable.   At least one of the first and second cases is for aligning the positions of the coil surfaces of the primary side coil and the secondary side coil of the mobile terminal in the longitudinal direction of the mobile terminal. The portable terminal charger according to claim 2, further comprising a position restricting portion.   At least one of the first and second cases is adapted to align the positions of the coil surfaces of the primary side coil and the secondary side coil of the mobile terminal in the short direction of the mobile terminal, The portable terminal charger according to claim 2, further comprising a short direction holding portion that holds the portable terminal in the short direction.   The portable terminal charger according to claim 1, wherein the plug blade storage section stores the plug blade section so that the plug blade section can be stored and pulled out.

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