JP2000078763A - Non-contact charger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve portability and a charging efficiency by providing a secondary side coil at an inner wall of a portable equipment brought into pressure contact with a wall of a containing recess by an own weight caused by a slope with the wall, and disposing a primary coil on the inner wall of the part brought into contact with a portable electronic equipment of the recess of a charger body, thereby reducing in size. SOLUTION: Since a containing recess 21 inclined to one end face side of an upper surface of a charger body 20 is provided and a space for containing a control circuit 22 is provided at a side to be applied by its own weight of a contained portable electronic equipment 28 even if the equipment 28 is contained, the equipment 28 is not overturned, but can be stabilized. Further, since a primary coil 27 and a secondary coil 32 are oppositely disposed on the wall brought into pressure contact with one another by its own weight of the equipment 28 no gap occurs therebetween but they are opposed at a predetermined distance, power can be always supplied by electromagnetic induction as designed, efficient charging can be executed. Further, it is not necessary to have a space as a charger body 20 at the other surface side of the recess 21, and hence can be reduced in size.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless charging device for wirelessly charging a portable electronic device.

[0002]

2. Description of the Related Art A conventional non-contact charging device for charging a portable electronic device such as a portable telephone or a PHS terminal has been configured as shown in FIG.

That is, various electronic components 3 are provided inside a charger main body 2 having a storage recess 1 inclined in one direction in the center of the upper surface.
And a control circuit unit 5 comprising a printed circuit board 4 incorporating the above. A cord 6 for supplying AC power to the control circuit unit 5 is provided. The connected primary coil 7 is arranged, and the secondary coil 1 connected to a circuit unit 10 in which various electronic components 9 are incorporated in a portable electronic device 8 housed in the housing recess 1.
1 is attached to the inner wall of the portable electronic device 8 corresponding to the primary coil 7.

[0004] The housing recess 1 is formed with an opening B larger than the outer dimension A of the portable electronic device 8 in order to easily store the portable electronic device 8.

[0005]

In this type of contactless charging device, portability is desired, so that miniaturization is indispensable, and the primary coil 7 is used in order to improve charging efficiency.
It is necessary to make the distance between the coil and the secondary coil 11 as short as possible.

However, in the above-described conventional configuration, the storage recess 1 is made large in consideration of the storageability of the portable electronic device 8, and the wall surface of the storage recess 1 on the opposite side to the wall pressed against by its own weight due to the inclination. Since the control circuit unit 5 and the primary coil 7 are disposed on the side of the portable electronic device 8 and the secondary coil 11 is disposed on the side corresponding to the primary coil 7, the portable electronic device 8 is A gap 12 is easily formed due to a dimensional difference between the primary coil 7 and the secondary coil 11 even when housed in the housing recess 1, so that power cannot be supplied efficiently by electromagnetic induction and charging efficiency is poor. Had become.

When the portable electronic device 8 is stored,
It is necessary to provide a space 13 on the wall surface of the storage recess 1 of the charger body 2 against which the portable electronic device 8 is pressed so that the charger body 2 does not lose its balance, and the shape of the charger body 2 becomes large. Had the problem that

An object of the present invention is to eliminate the above-mentioned conventional drawbacks and to provide a small-sized non-contact charging device which is excellent in charging efficiency.

[0009]

In order to solve the above-mentioned problems, a contactless charging device according to the present invention is provided with a storage recess which is inclined at a certain angle with respect to a vertical direction at one end surface of an upper surface and supplies AC power. A charger main body provided with a primary coil in a control circuit unit connected to a supplied cord, a portable electronic device whose lower part is stored in a storage recess of the charger main body, and a storage recess A secondary coil receiving power supply by electromagnetic induction from the primary coil is provided on an inner wall portion of the portable electronic device which presses against the wall surface of the storage recess by its own weight due to its inclination when stored in the storage recess. The primary coil is arranged on the inner wall of a portion of the storage recess where the portable electronic device is pressed.

[0010] With this configuration, a useless gap is not formed between the primary side coil and the secondary side coil, the charging efficiency can be improved, and the size of the charger main body can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a storage recess is provided at one end of an upper surface at an angle with respect to a vertical direction and is connected to a cord supplied with AC power. A charger main body provided with a primary coil in a control circuit portion to be performed, a portable electronic device whose lower portion is stored in a storage recess of the charger main body, and when the portable electronic device is stored in the storage recess. A secondary coil receiving power supply by electromagnetic induction from the primary coil is provided on an inner wall portion of the portable electronic device which is pressed against the wall surface of the storage recess by its own weight due to the inclination, and the portable electronic device is also provided in the storage recess of the charger body. The primary coil is arranged on the inner wall of the portion where the device is in pressure contact, so that the charging efficiency can be increased and the size can be reduced.

According to a second aspect of the present invention, the wall surface of the housing recess of the charger body on the side where the portable electronic device is not pressed against is eliminated, and the portable electronic device with a flip can be charged. It can be.

According to a third aspect of the present invention, there is provided a structure in which an engaging portion is provided for engaging with an engaging portion provided at a lower portion of a portable electronic device housed in a bottom portion of a housing recess of a charger main body. Therefore, the portable electronic device can be pressed against the wall surface of the storage recess of the charger body so as to be in close contact with the charger body, and the charging efficiency can be further improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) An embodiment of the non-contact charging device of the present invention will be described with reference to the sectional view of FIG.
In FIG. 1, reference numeral 20 denotes a charger main body formed of an insulating material such as a synthetic resin, and reference numeral 21 denotes an upper surface of the charger main body 20 which is formed to be inclined at an angle of α with respect to a vertical direction at one end surface side. The storage recess 22 is provided in the charger main body 2.
A control circuit section 25 is composed of a printed circuit board 24 incorporating various electronic components 23 disposed in the internal space on the side where the storage recess 21 is not formed, and one end of the control circuit section 25 is connected to the control circuit section 22. Bushing 26 from the side of 20
A cord 27 which is drawn out to supply AC power to the control circuit section 22 through the outside, a primary coil 27 attached to a part of the control circuit section 22 and provided so as to press against the inner wall of the storage recess 21; Is a portable electronic device whose lower part is stored in the storage recess 21 of the charger body 20 at the time of charging, and 29 is various electronic components 3 stored inside the portable electronic device 28.
A circuit section composed of a printed circuit board 31 incorporating 0
Reference numeral 32 is connected to the circuit portion 29, and when the portable electronic device 28 is stored in the storage recess 21, the inclination of the storage recess 21 causes the weight of the portable electronic device 28 to press against the wall surface of the storage recess 21 due to its own weight. The secondary coil is mounted so as to face the primary coil 27.

With the above configuration, the portable electronic device 28
When the energy of the battery becomes low, the portable electronic device 28 is fitted into the storage recess 21 of the charger body 20. Then, the plug at the end of the cord 25 is inserted into an outlet of the AC power supply, and the control circuit 22 is driven to supply power to the primary coil 27.

At this time, the portable electronic device 28 stored in the storage recess 21 is in pressure contact with the wall surface on which the primary coil 27 of the storage recess 21 inclined by its own weight is attached. The secondary coil 32 is disposed on the inner surface, and the primary coil 27 and the secondary coil 32
Meanwhile, the wall of the charger body 20 and the portable electronic device 28
Oppose each other only via the wall surface.

Power is supplied from the primary coil 27 to the secondary coil 32 by electromagnetic induction, and the power generated in the secondary coil 32 is charged in the battery in the portable electronic device 28. .

When charging is completed, the portable electronic device 28 is pulled out of the storage recess 21, the cord 25 is pulled out of the AC power outlet, and the charger main body 20 is stored.

As described above, the storage recess 21 is provided at one end of the upper surface of the charger main body 20, and a space for storing the control circuit section 22 is provided on the side of the stored portable electronic device 28 where the own weight is applied. Therefore, even when the portable electronic device 28 is stored, the portable electronic device 28 can be stable without being turned over, and the primary coil 27 and the secondary coil 27 32 are opposed to each other, so that no gap or the like is generated between them, and since they face each other at a fixed distance, power can be always supplied by electromagnetic induction as designed and efficient charging can be performed. It is not necessary to design a space having the charger main body 20 on the other side, and the charger main body 20 can be downsized.

(Embodiment 2) Embodiment 2 of the present invention will be described with reference to FIG. The difference from the first embodiment is that the configuration is such that a wall surface of the storage recess 21 on the side where the portable electronic device 28 is not pressed when the portable electronic device 28 is stored is eliminated.

However, when the portable electronic device 28 is stored in the storage recess 21, it is necessary to prevent the lower surface of the portable electronic device 28 from sliding on the inner bottom surface of the storage recess 21 and dropping out of the storage recess 21. An engagement recess 33 is provided on the lower surface of the portable electronic device 28, and an engagement projection 34 engaged with the engagement recess 33 is provided on the charger body 20 side. The engagement concave portion 33 and the engagement protrusion 34 may be provided opposite to each other.

By removing the wall surface on one end surface side of the storage recess 21, the portable electronic device 28 can be charged even if the flipper 35 or the like is provided in the portable electronic device 28.

(Embodiment 3) Embodiment 3 of the present invention will be described with reference to FIG. Basically, Embodiment 2
However, engagement recesses 33 are provided on both side surfaces below the portable electronic device 28 to eliminate the wall surface on one end surface of the storage recess 21 of the charger body 20 and engage with the lower portion on one end surface side. Protrusion 3
4, when the portable electronic device 28 is stored in the storage recess 21, the engagement recess 33 is engaged with the engagement projection 34 to fix the storage state of both, and the portable electronic device 28 is The structure is such that it is securely pressed against the inclined wall surface 21 by its own weight, so that the charging efficiency can be stabilized.

[0024]

As described above, since the non-contact charging device of the present invention is constructed, it is possible to reduce the size, improve the portability, and improve the charging efficiency. It will be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a contactless charging device according to an embodiment of the present invention.

FIG. 2 is a sectional view of another embodiment.

FIG. 3 is a perspective view of still another embodiment.

FIG. 4 is a sectional view showing a conventional wireless charging device;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 Charger main body 21 Storage recess 22 Control circuit 25 Code 27 Primary coil 28 Portable electronic device 29 Circuit 32 Secondary coil 33 Engaging recess 34 Engaging protrusion

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Kanda 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Tohru 1006 Kazuma Kadoma, Kadoma City Osaka Prefecture (72) Inventor Yoshio Takayama 1006 Kazuma, Kadoma, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. 5G003 AA01 BA01 FA03 GB08 5K067 AA42 BB04 BB08 EE02 KK06 KK17

Claims (3)

[Claims] An accommodating recess which is inclined at a certain angle with respect to a vertical direction is provided on one end side of an upper surface,
A charger main body provided with a primary side coil in a control circuit unit connected to a cord to be supplied with power, a portable electronic device whose lower part is stored in a storage recess of the charger main body, and this portable electronic device A secondary coil receiving power supply from the primary coil by electromagnetic induction is provided on an inner wall portion of the portable electronic device which presses against the wall surface of the storage recess by its own weight due to its inclination when stored in the storage recess. A non-contact charging device in which a primary coil is disposed on an inner wall of a portion of a storage recess of a main body where a portable electronic device is pressed against. 2. The non-contact charging device according to claim 1, wherein a wall surface of a storage recess of the charger main body on a side where the portable electronic device is not pressed against is removed. 3. The non-contact charging device according to claim 2, further comprising an engaging portion that engages with an engaging portion provided at a lower portion of the portable electronic device housed in the bottom of the housing recess of the charger body.