JP2021176250A - Charging device - Google Patents

Abstract

To provide a charging device capable of being firmly attached to an electronic terminal apparatus during non-contact charging, and being safely and easily removed from the electronic terminal apparatus.SOLUTION: A charging device 1 has a built-in transmitting coil as a wireless transmission part and a built-in battery supplying current to the transmitting coil, and has a surface 3 opposing to a charging possible surface 11 of a charging object 10 at the time of non-contact charging. The opposing surface 3 has a first region 4 and a second region 5. The first region 4 has position determining means 7 and 8 provided around a position where the transmitting coil is arranged inside and for maintaining the charging object 10 and the charging devise 1 in a state where the positions are determined, and in the second region 5, a distance with the charging possible surface 11 of the charging object 10 is made longer than the first region 4 in a state where the positions of the charging object 10 and the charging device 1 are determined. In the opposing surface 3, the second region 5 is provided at the outside of the first region 4.SELECTED DRAWING: Figure 2

Description

The present invention relates to a charging device, and more particularly to a charging device capable of contactlessly charging a battery in a portable electronic terminal device such as a mobile phone or a tablet.

Portable electronic terminal devices such as mobile phones and tablets tend to consume more power as they become more sophisticated and have higher performance. The battery capacity in such an electronic terminal device cannot be said to be sufficient for the time the user uses the electronic terminal device. Therefore, the user carries an AC adapter that charges the battery in the electronic terminal device from the AC power supply together with the electronic terminal device, and a charging device that can charge the battery in the electronic terminal device without the AC power supply. ..

In recent years, since the number of electronic terminal devices compatible with non-contact charging has increased, many charging devices capable of non-contact charging have been sold. As such a non-contact charging capable charging device, there is one shown in Patent Document 1.

In non-contact charging using electromagnetic induction, a magnetic field is generated by the current flowing through the power transmission coil, which is the wireless power transmission unit on the charging device side. If a power receiving coil, which is a wireless power receiving unit on the electronic terminal device side, is present in the magnetic field, an induced current is generated in the power receiving coil. This induced current can be charged to the battery in the electronic terminal device.

Japanese Unexamined Patent Publication No. 2014-007924

During non-contact charging using electromagnetic induction, it is required that the power receiving coil on the electronic terminal device side continues to exist at an accurate position with respect to the power transmitting coil on the charging device side. If the power receiving coil on the electronic terminal device side is not in the correct position with respect to the power transmitting coil on the charging device side during non-contact charging, problems such as failure of non-contact charging and deterioration of charging efficiency will occur. be.

This problem becomes particularly remarkable when both the charging device for non-contact charging and the electronic terminal device are portable. When the battery level of the electronic terminal device is low, the user attaches a charging device to the electronic terminal device to perform non-contact charging while operating the electronic terminal device to which the charging device is attached, or putting it in or out of a bag or the like. Will be done. Even in such a usage situation, it is necessary to firmly attach the charging device to the electronic terminal device so that the position of the charging device with respect to the electronic terminal device does not shift or the charging device does not come off from the electronic terminal device. ..

On the other hand, after the non-contact charging is completed, the charging device is immediately removed from the electronic terminal device. Further, in order to adjust the position of the charging device with respect to the electronic terminal device, the charging device attached to the electronic terminal device may be attached and detached many times.

However, there is a problem that it is difficult to easily remove the charging device firmly attached to the electronic terminal device. Furthermore, there is a problem that the electronic terminal device or charging device may pop out from the user's hand due to the reaction of forcibly exchanging and removing the charging device firmly attached to the electronic terminal device, and the electronic terminal device or charging device may be damaged. There is also.

Therefore, in order to solve the above problem, we provide a charging device that can firmly attach the charging device to the electronic terminal device during non-contact charging and safely and easily remove the charging device from the electronic terminal device. The purpose is.

The charging device according to claim 1 is a charging device that includes a wireless power transmission unit and a battery that supplies a current to the wireless power transmission unit, and has a surface that faces the rechargeable surface of the object to be charged during non-contact charging. The facing surfaces have a first region and a second region, and the first region is provided around the position where the wireless power transmission unit is internally arranged so that the charging object and the charging device are positioned. The second region has a positioning means for maintaining, and when the charging object and the charging device are maintained in a positioned state, the distance between the chargeable surface of the charging object and the charging object is longer than that in the first region. On the opposing surfaces, the second region is provided outside the first region.

According to the charging device of claim 1, the wireless power transmission unit is provided around the position arranged inside, and has a positioning means for maintaining the charging object and the charging device in a positioned state. Therefore, the charging device can be firmly attached to the electronic terminal device during non-contact charging. As a result, during non-contact charging, the wireless power receiving unit on the charging object side can continue to exist at an accurate position with respect to the wireless power transmitting unit on the charging device side.

Further, according to the charging device of claim 1, in the second region, when the charging object and the charging device are maintained in a positioned state, the distance between the chargeable surface of the charging object and the charging target is larger than that in the first region. It is elongated and the second region is provided outside the first region on opposite surfaces. Therefore, a fingertip or the like can be inserted between the second region of the charging device and the rechargeable surface of the charging object. With the inserted fingertip or the like, the charging device can be easily removed from the electronic terminal device by separating the facing surface of the charging device from the rechargeable surface of the object to be charged. Specifically, the charging device can be easily removed from the electronic terminal device by gradually separating the positioning means closer to the second region and the positioning means farther from the rechargeable surface in this order.

The charging device according to claim 2 has a substantially rectangular facing surface in the charging device according to claim 1, and in the first region, the first positioning means so as to sandwich the position where the wireless power transmission unit is internally arranged. And a second positioning means are provided, and on the opposite surface, one positioning means, the position where the wireless power transmission unit is internally arranged, the other positioning means, and the second region are in this order in the longitudinal direction. ing.

According to the charging device of claim 2, in addition to the same operation as that of the charging device of claim 1, when a fingertip or the like is inserted between the second region of the charging device and the rechargeable surface of the charging object, the lever is inserted. According to the principle, one positioning means is a fulcrum, the other positioning means is an action point, and a position where a fingertip or the like in the second region is inserted is a force point. First, by inserting a fingertip or the like between the second region of the charging device and the rechargeable surface of the charging object, the other positioning means can be separated from the rechargeable surface of the charging object. The charging device can then be easily removed from the electronic terminal device by gripping the object to be charged and separating one of the positioning means from the rechargeable surface of the object to be charged.

The other positioning means and the one positioning means can be gradually separated from the rechargeable surface. Therefore, the reaction when the charging device is finally removed from the electronic terminal device is reduced. Therefore, the charging device can be removed more safely from the electronic terminal device.

The charging devices of claims 1 and 2 can both firmly attach the charging device to the electronic terminal device during non-contact charging and safely and easily remove the charging device from the electronic terminal device.

It is a perspective view of the charging device 1 which shows one Embodiment of this invention. It is a side view which shows the state of removing the charging device 1 of FIG. 1 from the state which attached to the mobile phone 10.

The charging device 1 of the embodiment of the present invention will be described with reference to each drawing.

As shown in FIG. 2A, the charging device 1 is attached to the mobile phone 10 which is an object to be charged, and can charge the battery in the mobile phone 10 in a non-contact manner. The back surface of the mobile phone 10 is a rechargeable surface 11 by non-contact charging.

The charging device 1 includes a housing 2 in which a wireless power transmission unit and a battery are built.

Batteries are capable of supplying current to the wireless power transmission section.

The charging device 1 is capable of non-contact charging by an induced current method, and has a power transmission coil as a wireless power transmission unit. The power transmission coil can generate a magnetic field for non-contact charging by flowing a current supplied from the battery.

A connection terminal for recharging the battery built in the housing 2 is provided on the side peripheral surface of the housing 2, although it cannot be seen from the perspective direction of FIG.

The upper surface of the housing 2 in FIG. 1 is a substantially rectangular shape with rounded corners.

As shown in FIG. 2A, the upper surface thereof is a surface 3 facing the rechargeable surface 11 of the mobile phone 10 during non-contact charging.

The facing surfaces 3 have a first region 4 and a second region 5.

As shown in FIG. 2A, in the second region 5, the distance between the rechargeable surface 11 of the mobile phone 10 and the chargeable surface 11 of the mobile phone 10 is the first region 4 when the mobile phone 10 and the charging device 1 are maintained in a positioned state. Is longer than. In FIG. 1, the second region 5 is recessed from the first region 4.

On the facing surfaces 3, the second region 5 is provided outside the first region 4. The second region 5, which is separated from the rechargeable surface 11 of the mobile phone 10, reaches the outer edge of the housing 2.

As shown in FIG. 1, the first region 4 is provided around the display 6 indicating the position where the power transmission coil is arranged inside and the position where the power transmission coil is arranged inside, and the mobile phone 10 It has suction cups 7 and 8 as positioning means for maintaining the charging device 1 and the charging device 1 in a positioned state.

In the first region 4, a suction cup 7 as a first positioning means and a suction cup 8 as a second positioning means are provided so as to sandwich the position indicating display 6 in which the power transmission coil is arranged.

During non-contact charging, as shown in FIG. 2A, the suction cups 7 and 8 are firmly attached to the rechargeable surface 11 of the mobile phone 10. In this state, the power receiving coil on the mobile phone 10 side is present at an accurate position with respect to the power transmitting coil on the charging device 1 side.

As shown in FIG. 1, on the facing surfaces 3, the suction cup 7, the position display 6 where the power transmission coil is arranged inside, the suction cup 8, and the second region 5 are in this order in the longitudinal direction of a substantially rectangular shape. ..

Hereinafter, an operation of removing the charging device 1 from the state of being attached to the mobile phone 10 will be described.

FIG. 2A shows a state in which the battery in the mobile phone 10 is non-contact charged.

After the non-contact charging is completed, as shown in FIG. 2B, the fingertip 9 is inserted between the second region 5 of the charging device 1 and the rechargeable surface 11 of the mobile phone 10. The gap between the second region 5 of the charging device 1 and the rechargeable surface 11 of the mobile phone 10 is easy for the fingertip 9 to enter.

In the process of the fingertip 9 entering the gap, the suction cup 7 far from the second region 5 is the fulcrum, the suction cup 8 near the second region is the point of action, and the position where the fingertip 9 of the second region 5 is inserted is determined by the principle of the lever. It becomes a point of emphasis.

As shown in FIG. 2C, when the fingertip 9 enters between the second region 5 of the charging device 1 and the rechargeable surface of the mobile phone 10, the suction cup 8 close to the second region 5 starts from the rechargeable surface 11. It comes off.

Further, as shown in FIG. 2D, when the second region 5 is pushed up with the fingertip 9, the suction cup 7 far from the second region 5 is also removed from the rechargeable surface 11. The charging device 1 can be removed from the mobile phone 10 by the above operation.

In the above embodiment, the case where the mobile phone 10 is the object to be charged has been described, but the present invention is not limited to this. The charging object may be, for example, another electronic device capable of non-contact charging such as a tablet or a mobile personal computer.

In the above embodiment, the case where the charging device 1 is capable of non-contact charging by an induced current method and has a power transmission coil as a wireless power transmission unit has been described, but the present invention is not limited to this. It may be a charging device of another non-contact charging method such as a magnetic field resonance method or an electric field coupling method, which requires positioning of the charging object and the charging device during charging.

In the above embodiment, the case where the shape of the housing 2 is the three-dimensional shape shown in FIG. 1 has been described, but the present invention is not limited to this. The housing may have another three-dimensional shape such as a disk shape as long as it has a surface facing the rechargeable surface of the object to be charged.

In the above embodiment, the case where the upper surface of the housing 2 is a substantially rectangular shape with rounded corners and the upper surface is the surface 3 facing the rechargeable surface 11 of the mobile phone 10 has been described. It is not limited to this. The surface of the charging target portion facing the rechargeable surface may be another polygon such as a triangle, a circle, or the like.

In the above embodiment, the case where the suction cups 7 and 8 are used as the positioning means for maintaining the mobile phone 10 and the charging device 1 in the positioned state has been described, but the present invention is not limited to this. The positioning means is, for example, a magnet, a hook-and-loop fastener, a reusable automatic adhesive glue, a material having high adhesiveness, a suction sheet having a large number of micro suction cups formed on the surface which cannot be visually confirmed, and the like. Anything can be used as long as the object and the charging device can be maintained in a positioned state.

1 Charging device 2 Housing 3 Surface facing the rechargeable surface of the mobile phone 4 First area 5 Second area 6 Display showing the position where the power transmission coil is arranged 7 Sucker 8 Sucker 9 Fingertip 10 Mobile phone 11 Rechargeable surface

Claims (2)

It is a charging device that has a built-in wireless power transmission unit and a battery that supplies current to this wireless power transmission unit, and has a surface that faces the rechargeable surface of the object to be charged during non-contact charging.
The facing surfaces have a first region and a second region.
The first region is provided around the position where the wireless power transmission unit is internally arranged, and has a positioning means for maintaining the charging object and the charging device in a positioned state.
In the second region, when the charging object and the charging device are maintained in a positioned state, the distance between the chargeable surface of the charging object is longer than that in the first region.
A charging device characterized in that the second region is provided outside the first region on the facing surfaces. The facing surfaces are approximately rectangular,
In the first region, the first positioning means and the second positioning means are provided so as to sandwich the position where the wireless power transmission unit is arranged inside.
The first aspect of claim 1, wherein the facing surfaces are in the order of one positioning means, a position where the wireless power transmission unit is internally arranged, the other positioning means, and a second region in the longitudinal direction. Charging device.

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