JP5102545B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device that is charged by a charger in a non-contact charging manner.

  Generally, a secondary battery serving as a power source for an electronic device such as a mobile phone is charged by directly contacting an electrical contact provided on the outer surface of the electronic device with an electrical contact of a charger. However, in such a direct charging method, the electrical contacts may become dirty, damaged, rusted, etc., resulting in poor contact of the electrical contacts.

Further, in recent years, a charger is provided with a power supply coil and an electronic device with a power reception coil, and an electronic device is charged in a non-contact manner using an electromagnetic induction effect between both coils (for example, patents). Reference 1). An electronic device that is charged by this type of non-contact charging system has a power receiving coil built in the main body of the main body. Here, in order to charge the secondary battery efficiently, the power receiving coil is used as the power feeding coil of the charger. Although it is necessary to incorporate the secondary battery into the device body in such a state that it is precisely aligned with the corresponding position and firmly fixed in the device body, the work of assembling the secondary battery into the device body is very complicated and the manufacturing cost is also high. It will take.
JP-A-9-190938

  The present invention has been invented in view of the above-described conventional problems, and it is an object of the present invention to provide an electronic device that can be easily manufactured by easily fixing a power receiving coil at a position corresponding to a power feeding coil of a charger. .

Electronic device according to claim 1 of the present invention in order to solve the above problems, an electronic apparatus is charged with a non-contact charging method by the charger 2, the battery cover 10 covering a battery 9 housed in the apparatus body 8 A power receiving coil 20 corresponding to the power feeding coil 3 of the charger 2 is attached to the battery cover 10, a conductive fixing member 34 is attached to the battery cover 10, and the power receiving power is attached to the battery cover 10 by the fixing member 34. The coil 20 is fixed, the fixing member 34 is electrically connected to the power receiving coil 20, a part of the fixing member 34 is used as an output contact 35, and the output contact 35 corresponds to the locked portion 25 formed on the battery cover 10. The input contact 23 electrically connected to the secondary battery 9 is provided at a position corresponding to the locking portion 18 formed on the device body 8, and the locked portion 25 is connected to the locking portion 18. In engagement locks in a state of attaching the battery cover 10 to the device body 8, characterized in that the output contact 35 is conductively in contact with the input contact points 23. By attaching the power receiving coil 20 to the battery cover 10 attached to the device body 8 in this way, the power receiving coil 20 can be easily fixed at a position corresponding to the power feeding coil 3 of the charger 2. Further, since the output contact 35 and the input contact 23 are disposed at a position close to the locking portion between the locked portion 25 and the locking portion 18, the output contact 35 and the input contact 23 are accurately aligned. And can be reliably contacted. Further, the power receiving coil 20 can be attached to the battery cover 10 more firmly by the conductive fixing member 34 provided on the battery cover 10, and the output contact 35 can be shared by a part of the fixing member 34.

Further, a second aspect of the present invention is the first aspect of the present invention, wherein the fixing member 34 is formed with a fixing portion 36 that clamps and fixes the power receiving coil 20 with the battery cover 10 at one end portion of the fixing member 34 and the output contact 35 at the other end portion. And at least an intermediate portion between the fixing portion 36 and the output contact 35 of the fixing member 34 is fixed to the battery cover 10. The fixing member 34 can have a simple shape.

In the invention according to claim 1, simply by attaching the power receiving coil to the battery cover that can be attached to the device main body, the power receiving coil can be easily fixed firmly at a position corresponding to the power feeding coil of the charger. Compared to the built-in device, the electronic device can be easily manufactured. Further, since the output contact and the input contact are arranged at a position close to the locking portion between the locked portion and the locking portion, the output contact and the input contact are accurately aligned and reliably contacted. be able to. Further, since a part of the fixing member also serves as an output contact, the number of members can be reduced, the manufacturing cost can be reduced, and the size can be reduced.

In addition , in the invention according to claim 2 , in addition to the effect of the invention according to claim 1 , the fixing member can have a simple shape, and the manufacturing cost can be further reduced.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. FIG. 1 is an explanatory view schematically showing an electronic apparatus according to an embodiment of the present invention. The electronic apparatus according to the present embodiment is a portable portable device, specifically, a cellular phone 1.

  The battery charger 2 for charging the mobile phone 1 of this example charges the mobile phone 1 in a non-contact manner using electromagnetic induction, and has a feeding coil 3 as shown in FIG. The feeding coil 3 is electrically connected to the AC power supply 4 via a rectifier circuit 6 and an oscillation circuit 7 of a circuit board 5 provided in the charger 2 as shown in FIG.

  As shown in FIG. 1, the mobile phone 1 forms an outer shell with a device main body 8 in which various electrical components are housed and a battery cover 10 that covers a battery pack 9 a housed in the device main body 8. Although not shown, an operation unit and a display screen for operating the mobile phone 1 are provided on one side of the device main body 8, and a concave portion is provided on one end of the opposite surface of the device main body 8 as shown in FIG. A step portion 11 is formed, and the battery cover 10 is disposed on the concave step portion 11. Hereinafter, in the mobile phone 1, one side of the device body 8 provided with the operation unit and the display screen is defined as the front side, the opposite side is defined as the rear side, and one end side of the device body 8 where the recessed step portion 11 is formed is the lower side. In the following description, the opposite side is the upper side.

  A battery housing portion 12 formed of a recess in the device main body 8 is formed on the bottom surface of the concave step portion 11 that opens to the rear side and the lower side of the device main body 8. A battery pack 9a constituting the secondary battery 9 is accommodated. A connection terminal 13 shown in FIG. 5 is provided in the battery housing part 12, and a terminal 14 of the battery pack 9 a housed in the battery storage part 12 is electrically connected to the connection terminal 13. In the state where the battery cover 10 is removed as shown in FIG. 2, the battery pack 9 a can be exchanged by taking it in and out from the rear opening of the battery housing portion 12. The battery pack 9a is a lithium ion secondary battery, and includes a protection circuit 16 for preventing overcharging of the battery cell 15 in addition to the battery cell 15.

  Further, a step 17 of the device main body 8 formed by the concave step portion 11 of the device main body 8, that is, a surface connecting the rear surface of the device main body 8 and the bottom surface of the concave step portion 11 opens downward as a locking portion 18. An insertion recess 18a is formed, and locking recesses 19 are formed on both sides of the rear inner surface of the insertion recess 18a.

  In addition, the device body 8 includes a circuit board 37, and the circuit board 37 is provided with a rectifier circuit 21 that rectifies a current from a power receiving coil 20 described later and a charge control circuit 24 that controls charging. The circuit board 37 is electrically connected to the connection terminal 13 connected to the battery pack 9a. An input terminal 22 is provided on the circuit board 37, and one end of the input terminal 22 projects along the inner surface on the front side of the insertion recess 18a (the surface facing the inner surface where the locking recess 19 is formed). ing. An input contact 23 is constituted by one end portion of the input terminal 22 protruding into the insertion recess 18a, and the input contact 23 of the input terminal 22 is connected to the circuit board 37 as shown in FIG. The battery pack 9a is electrically connected to the protection circuit 16 and the battery cell 15 through the rectifier circuit 21, the charge control circuit 24, and the connection terminal 13 in this order.

  As shown in FIG. 1, the battery cover 10 is detachably attached to the rear side of the lower end portion of the device main body 8 so as to cover the battery pack 9a of the device main body 8, and the rear surface and both side surfaces of the lower end portion of the mobile phone 1. The lower end surface of the mobile phone 1 is configured.

  As shown in FIG. 3, the battery cover 10 is open forward and upward on the battery housing 12 side and the step 17 side of the device body 8. On both sides of the inner surface of the upper end portion of the rear surface portion 10a of the battery cover 10 (portion constituting the rear surface of the mobile phone 1), hooking portions 25a constituting the locked portion 25 are integrally projected. An upper end portion of each hook portion 25 a is a protruding portion 26 that protrudes upward from the rear surface portion 10 a of the battery cover 10. On the rear surface of the protruding portion 26, a locked protrusion 27 that is detachably locked to the locking recess 19 is formed. A lower portion of the hook portion 25a opposite to the protruding portion 26 protrudes forward, and an inclined step surface 28 is formed on the front surface of the hook portion 25a. Further, a mounting step portion 30 that opens forward and downward is formed at the lower end portion of the hook portion 25a.

  A power receiving coil 20 that is magnetically coupled to the power feeding coil 3 is attached to a position corresponding to the power feeding coil 3 of the charger 2 on the inner surface of the battery cover 10. The power receiving coil 20 includes a front coil substrate 31 and a rear coil portion 32 provided on the coil substrate 31. As shown in FIG. A contact terminal 33 electrically connected to the portion 32 is provided. In the state where the power receiving coil 20 is attached to the battery cover 10 as shown in FIG. 3, the coil portion 32 abuts on the center of the inner surface of the rear surface portion 10 a of the battery cover 10, and the upper end portion of the coil substrate 31 is the hook portion 25 a. Along the bottom surface of the mounting step 30. The power receiving coil 20 is attached to the battery cover 10 by, for example, fixing the coil portion 32 to the rear surface portion 10a of the battery cover 10.

  The power receiving coil 20 attached to the inner surface of the battery cover 10 is positioned and fixed by a fixing member 34 having conductivity. The fixing member 34 is formed of a stepped plate-like member in which the upper end portion and the lower end portion are positioned at different levels. The output contact 35 is configured at the upper end portion of the fixing member 34, and the fixing portion 36 is configured at the lower end portion. .

That is, in this example, the output contact 35 electrically connected to the power receiving coil 20 is provided at a position corresponding to the locked portion 25 formed on the battery cover 10, and the input contact 23 electrically connected to the secondary battery 9. Is provided at a position corresponding to the locking portion 18 formed in the device main body 8. That is, in this example, the output contact 35 is provided at a position corresponding to the locked portion 25 as a result of being the upper end portion of the fixing member 34 attached to the locked portion 25. 23 is provided at a position corresponding to the locking portion 18 as a result of being one end portion of the input terminal 22 protruding into the insertion recess 18a constituting the locking portion 18. In short, it can be said that the output contact 35 is formed directly on the locked portion 25 or attached to the locked portion 25 as in this example, and is provided at a position corresponding to the locked portion 25. It can be said that the contact 23 is formed directly on the locking portion 18 or provided at a position facing the locking portion 18 as in the present example, at a position corresponding to the locking portion 18.

  In order to fix the power receiving coil 20 with the fixing member 34, the portion from the upper end to the lower portion of the fixing member 34 is fixed to the portion excluding the mounting step 30 on the front surface of the hook portion 25 a, and the fixing portion 36 of the fixing member 34 is fixed. And the bottom surface of the mounting step portion 30 of the hook portion 25a sandwich both side portions (portions provided with the contact terminals 33) of the upper end portion of the coil substrate 31 disposed on the mounting step portion 30. At this time, since the fixed surface of the fixing member 34 to the hooking portion 25a is formed with a stepped surface 29 that is inclined in the same manner as the front surface of the hooking portion 25a, the fixing member 34 has a step between the stepped surface 29 and the hooking portion 25a. It is attached to the hook portion 25a in a state where the surface 28 is in contact with and positioned. By attaching the fixing member 34 to the hooking portion 25a of the battery cover 10, the fixing portion 36 of each fixing member 34 and the contact terminal 33 of the coil substrate 31 are in conductive contact, whereby the coil portion 32 of the power receiving coil 20 is contacted with the contact terminal 33. The fixing member 34 having the output contact 35 is electrically connected through the connector 33. That is, the fixing portion 36 of each fixing member 34 constitutes a contact point that contacts the contact terminal 33.

  In order to attach the battery cover 10 to which the power receiving coil 20 is attached to the device main body 8, the protrusions 26 of the respective hook portions 25 a of the battery cover 10 are fixed to the fixing members 34 in the insertion recesses 18 a of the device main body 8 as shown in FIG. Are inserted together with the output contacts 35, and the locked protrusions 27 formed in the respective hook portions 25a are locked in the corresponding locking recesses 19. In this state, when the battery cover 10 is attached to the device body 8, the output contact 35 of the fixing member 34 provided on the battery cover 10 is in conductive contact with the input contact 23 of the device body 8. The coil portion 32 is electrically connected to the rectifier circuit 21 of the main body circuit board 37.

  In order to charge the mobile phone 1 with the charger 2 described above, the mobile phone 1 is placed at a predetermined position of the charger 2 and is arranged inside the battery cover 10 of the mobile phone 1 as shown in FIG. The coil portion 32 of the power receiving coil 20 is disposed at a position corresponding to the power feeding coil 3, and in this state, electromagnetic induction is generated between the power feeding coil 3 and the coil portion 32 of the power receiving coil 20. And electric power is supplied to the battery cell 15 of the battery pack 9a via the charge control circuit 24, and charging is performed.

  In the electronic device described above, the power receiving coil 20 can be easily fixed at a position corresponding to the power feeding coil 3 of the charger 2 only by attaching the power receiving coil 20 to the battery cover 10 attached to the device main body 8. Therefore, the electronic device can be easily manufactured as compared with the case where the power receiving coil 20 is incorporated in the device main body 8. Further, an output contact 35 electrically connected to the power receiving coil 20 is provided at a position corresponding to the locked portion 25 formed on the battery cover 10, and an input contact 23 electrically connected to the secondary battery 9 is provided in the device main body. 8 is provided at a position corresponding to the locking portion 18 formed in FIG. 8, and the output contact 35 is input in a state where the locked portion 25 is locked to the locking portion 18 and the battery cover 10 is attached to the device body 8. Since the contact 23 is electrically conductive, the output contact 35 and the input contact 23 can be easily aligned and brought into contact by simply attaching the battery cover 10 to the device body 8, and the output contact. 35 and the input contact 23 are arranged at a position close to the locking portion between the locked portion 25 and the locking portion 18, so that the output contact 35 and the input contact 23 are accurately aligned and reliably contacted. Can be made.

  In this example, the power receiving coil 20 can be attached to the battery cover 10 more firmly by the conductive fixing member 34 provided on the battery cover 10, and a part of the fixing member 34 is an output contact 35. Therefore, the manufacturing cost can be further reduced by reducing the number of members, and downsizing can be realized.

  In addition, an electrical contact (not shown) that conducts to the circuit board 37 is separately provided on the outer surface of the device main body 8, and the electrical contact is brought into conductive contact with the electrical contact of the direct charging charger 2 (not shown). In this case, both the direct charging method and the non-contact charging method can be used, and the battery cover 10 without the power receiving coil 20 and the fixing member 34 can be attached to the device main body 8. For example, the mobile phone 1 having no contactless charging function can be manufactured, and the device body 8 can be used as the mobile phone 1 having no contactless charging function. Moreover, in the said Example, although the rectifier circuit 21 was provided in the apparatus main body 8, you may provide the rectifier circuit 21 in the battery cover 10 like FIG. Further, the fixing member 34 is fixed to the hooking portion 25a at the portion from the upper end to the lower portion. However, the fixing member 34 is not limited to this, and the fixing member 34 has at least an intermediate portion between the fixing portion 36 and the output contact 35 as a battery cover. 10 may be fixed. In addition, although the electronic device of this example is the cellular phone 1, the electronic device may be applied to other electronic devices such as a digital camera as long as the secondary battery 9 serving as a power source is charged by a non-contact charging method.

It is explanatory drawing which showed roughly the electronic device of an example of embodiment of this invention. It is explanatory drawing which showed roughly the apparatus main body which removed the battery cover same as the above. The battery cover same as the above is shown, (a) is a sectional side view, and (b) is a front view. It is a front view of the receiving coil removed from the battery cover same as the above. It is a block diagram which shows the state which set the mobile phone same as the above to the charger. It is explanatory drawing which shows the state which set the mobile phone same as the above to the charger. It is a block diagram of the mobile phone of another example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Charger 3 Feeding coil 8 Device main body 9 Secondary battery 10 Battery cover 18 Locking part 20 Power receiving coil 25 Locked part 34 Fixing member 35 Contact for output

Claims (2)

An electronic device that is charged in a non-contact charging manner by a charger is provided with a battery cover that covers a secondary battery stored in the device body, and a power receiving coil corresponding to a power feeding coil of the charger is attached to the battery cover, and the battery cover is electrically conductive. A fixing member having a property is attached and the power receiving coil attached to the battery cover is fixed by the fixing member, the fixing member is electrically connected to the power receiving coil, and a part of the fixing member is used as an output contact. Provided at a position corresponding to the latched portion formed on the battery cover, and provided with an input contact electrically connected to the secondary battery at a position corresponding to the latched portion formed on the device body. An electronic device, wherein the output contact is in conductive contact with the input contact in a state where the locking portion is locked and the battery cover is attached to the device body. A fixing portion for sandwiching and fixing the power receiving coil between the battery cover and the battery cover is formed at one end portion of the fixing member, and the output contact is formed at the other end portion, at least between the fixing portion of the fixing member and the output contact. The electronic device according to claim 1, wherein the portion is fixed to the battery cover.

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