JP2015027142A - Non-contact charging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-contact charging device, with which it is possible to increase a degree of freedom in posture of electronic equipment at the time of charging.SOLUTION: A non-contact charging device 2, which charges electronic equipment 4 having a power receiving coil 14 in a non-contact manner, includes: a first member 6; a power transmitting unit 26 provided in the first member 6 and including a power transmitting coil 28 for supplying electric power to the power receiving coil 14 of the electronic equipment 4 in a non-contact manner; and a second member 8 attachable to the first member 6 and sandwiching the electronic equipment 4 with the power transmitting unit 26 so that the power receiving coil 14 and the power transmitting coil 28 oppose each other.

Description

  The present invention relates to a non-contact charging apparatus for charging an electronic device having a power receiving coil in a non-contact (wireless) manner.

  In recent years, a non-contact charging device for charging an electronic device such as a mobile phone or a smartphone in a non-contact manner is known (for example, see Patent Document 1). A conventional non-contact charging apparatus includes a charging pad with a built-in power transmission coil. This charging pad is placed horizontally, for example, on a table top. In addition, a receiving coil and a secondary battery are provided inside the electronic device.

  When charging the electronic device, the electronic device is placed on the charging pad in a horizontal posture (that is, a posture horizontal to the ground) so that the power transmission coil and the power receiving coil face each other. In this state, electric power is transmitted from the power transmission coil to the power reception coil by causing electromagnetic induction between the power transmission coil and the power reception coil. The electric power generated in the receiving coil is charged in the secondary battery of the electronic device.

JP 2012-44735 A

  However, the conventional non-contact charging apparatus described above has the following problems. As described above, when charging an electronic device, it is necessary to place the electronic device on the charging pad in a horizontal posture. Therefore, foreign matters (for example, dust, paper pieces, metal pieces, and the like) are easily sandwiched between the charging pad and the electronic device. When a foreign object is sandwiched between the charging pad and the electronic device, there arises a problem that power transmission efficiency from the power transmission coil to the power reception coil is reduced. Note that when a metal foreign object is sandwiched between the charging pad and the electronic device, there is a problem that not only the power transmission efficiency is reduced but also the foreign object generates heat due to electromagnetic induction.

  SUMMARY An advantage of some aspects of the invention is to provide a non-contact charging device that can increase the degree of freedom of the posture of an electronic device during charging.

  To achieve the above object, a non-contact charging apparatus according to one aspect of the present invention is a non-contact charging apparatus for charging an electronic device having a power receiving coil in a non-contact manner, the first member, A power transmission unit provided on the first member and having a power transmission coil for supplying power in a non-contact manner to the power reception coil of the electronic device; and attachable to the first member; and A second member for sandwiching the electronic device with the power transmission unit so that the power reception coil and the power transmission coil face each other.

  According to this aspect, when charging the electronic device, the electronic device is sandwiched between the second member and the power transmission unit. Thereby, for example, the electronic device can be charged while maintaining the electronic device in an arbitrary posture such as a vertical posture, an inclined posture, or a horizontal posture, and the degree of freedom of the posture of the electronic device during charging can be increased. As a result, since it is difficult for foreign matter to be sandwiched between the electronic device and the power transmission unit, the power transmission efficiency from the power transmission coil to the power reception coil can be increased.

  For example, in the non-contact charging device according to one aspect of the present invention, an elastic member that is provided between the first member and the power transmission unit and that presses the power transmission unit against the electronic device is further provided. You may comprise so that it may be provided.

  According to this aspect, since the elastic member for pressing the power transmission unit against the electronic device is provided, the electronic device can be more stably sandwiched between the second member and the power transmission unit.

  For example, in the non-contact charging device according to one aspect of the present invention, a hook portion provided on one of the first member and the second member, and the first member and the second member A receiving portion that is provided on the other side and on which the hook portion can be hooked. When the hook portion is hooked on the receiving portion, the first member and the second member are mutually locked. You may comprise.

  According to this aspect, since the first member and the second member are locked to each other when the hook portion is hooked on the receiving portion, the second member is the first member when charging the electronic device. It can suppress that it remove | deviates from this member.

  For example, in the non-contact charging device according to one embodiment of the present invention, the second member is provided with an opening, and the electronic device is sandwiched between the power transmission unit and the second member. In this case, at least a part of the electronic device may be exposed to the outside through the opening.

  According to this aspect, since the opening is provided in the second member, the user can operate the electronic device through the opening while charging the electronic device.

  For example, in the non-contact charging device according to one aspect of the present invention, the guide member further provided on the second member and extending toward the first member, the first member, and A rail portion on which the guide portion is slidably mounted may be provided.

  According to this aspect, the second member can be smoothly slid relative to the first member by the guide portion being slidably mounted on the rail portion. Thereby, attachment or removal with respect to the 1st member of a 2nd member can be performed easily.

  For example, in the non-contact charging device according to one aspect of the present invention, the second member includes a support unit for supporting the electronic device sandwiched between the power transmission unit and the second member. You may comprise so that it may be provided.

  According to this aspect, since the support member is provided on the second member, the electronic device can be supported by the support member.

  For example, in the non-contact charging device according to one aspect of the present invention, the support portion may be configured to be provided with a slit portion for discharging foreign matter to the outside.

  According to this aspect, since the support portion is provided with the slit portion, the foreign matter can be discharged to the outside through the slit portion even when the foreign matter enters the support portion.

  According to the non-contact charging device according to one embodiment of the present invention, the degree of freedom of the posture of the electronic device during charging can be increased.

It is a perspective view which shows the external appearance of the non-contact charging device which concerns on Embodiment 1. FIG. It is a disassembled perspective view which shows the state which decomposed | disassembled the non-contact charging device which concerns on Embodiment 1. It is a perspective view which shows the back side of a 1st member. It is a perspective view which shows the back side of a 2nd member. It is a principal part perspective view which shows the state which looked at the support part of the 2nd member from the downward direction. It is a perspective view which shows the state before charging an electronic device using the non-contact charging device which concerns on Embodiment 1. FIG. It is a perspective view which shows the state which is charging the electronic device using the non-contact charging device which concerns on Embodiment 1. FIG. It is sectional drawing of the non-contact charging device and electronic device which were cut | disconnected by the AA line in FIG. It is a perspective view which shows the state before installing the non-contact charging device which concerns on Embodiment 2. FIG. It is a perspective view which shows the state which installed the non-contact charging device which concerns on Embodiment 3. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. The numerical values, shapes, materials, constituent elements, arrangement positions and connecting forms of the constituent elements shown in the following embodiments are merely examples, and are not intended to limit the present invention. The invention is specified by the claims. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims are not necessarily required to achieve the object of the present invention, but are described as constituting more preferable embodiments. Is done.

(Embodiment 1)
[Entire configuration of non-contact charging device]
First, the overall configuration of the contactless charging apparatus according to Embodiment 1 will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing an appearance of the non-contact charging apparatus according to Embodiment 1. FIG. FIG. 2 is an exploded perspective view showing a state in which the non-contact charging apparatus according to Embodiment 1 is disassembled.

  As shown in FIGS. 1 and 2, the non-contact charging device 2 is a charging device for charging the electronic device 4 in a non-contact manner. The non-contact charging device 2 includes a first member 6 and a second member 8. The second member 8 is detachably attached to the front surface of the first member 6. Each of the first member 6 and the second member 8 is made of, for example, resin. The configuration of each of the first member 6 and the second member 8 will be described later.

[Configuration of electronic equipment]
As illustrated in FIG. 2, the electronic device 4 is, for example, a smartphone. A touch panel 10 is provided on the front surface of the electronic device 4. For example, a plurality of icons 12 for starting an application are displayed on the touch panel 10.

  Furthermore, as shown in FIG. 6 to be described later, a receiving coil 14 and a secondary battery 16 are provided inside the electronic device 4. The power receiving coil 14 is configured by, for example, a so-called spiral coil in which a metal wire such as a copper wire is wound in a planar shape. The secondary battery 16 is composed of, for example, a lithium ion battery that can be charged and discharged.

[Configuration of the first member]
Next, the configuration of the first member 6 will be described with reference to FIGS. FIG. 3 is a perspective view showing the back side of the first member.

  As shown in FIGS. 1-3, the 1st member 6 is comprised by the rectangular plate shape. A rectangular recess 18 is provided on the front surface of the first member 6 (that is, the surface on which the second member 8 is attached). The size of the recess 18 is configured to allow the electronic device 4 to enter the recess 18, for example. A hook portion 20 extending toward the second member 8 is provided at the upper end portion of the front surface of the first member 6.

  As shown in FIG. 2, the recess 18 is provided with a plurality of rail portions 22. Each of the plurality of rail portions 22 extends linearly in the depth direction of the recess 18 (that is, the direction from the first member 6 toward the second member 8). For example, the rail portion 22 is disposed at one location on one side 18 a of the recess 18 and at two locations on the other side 18 b of the recess 18.

  As shown in FIGS. 2 and 3, a plurality of coil springs 24 (each of the plurality of coil springs 24 constitutes an elastic member) is further attached to the recess 18. Each of the plurality of coil springs 24 extends in a direction from the first member 6 toward the second member 8. A power transmission unit 26 is attached to the tip of each of the plurality of coil springs 24.

  The power transmission unit 26 is configured in a disc shape, and a power transmission coil 28 is provided therein. The power transmission coil 28 is configured by, for example, a so-called spiral coil in which a metal wire such as a copper wire is wound in a planar shape. The power transmission unit 26 is biased toward the second member 8 by a plurality of coil springs 24.

  The first member 6 is further provided with a power transmission circuit (not shown). The power transmission circuit includes an inverter circuit and the like, and supplies predetermined AC power to the power transmission coil 28. The power transmission circuit is electrically connected to a commercial power source via an AC adapter (not shown).

  In addition, as shown in FIGS. 6-8 mentioned later, the 1st member 6 is attached to the wall surface 40 extended perpendicularly | vertically with respect to the ground, for example. For the attachment of the first member 6, for example, an adhesive tape, a screw, a magnet, or the like can be used.

[Configuration of Second Member]
Next, the structure of the 2nd member 8 is demonstrated, referring FIG.1, FIG.2, FIG.4 and FIG. FIG. 4 is a perspective view showing the back side of the second member. FIG. 5 is a main part perspective view showing a state in which the support part of the second member is viewed from below.

  As shown in FIGS. 1, 2, and 4, the second member 8 is configured in a rectangular frame shape. That is, the second member 8 is provided with a rectangular opening 8a penetrating in the thickness direction. Note that the size of the opening 8 a is configured to be smaller than the size of the electronic device 4.

  A receiving portion 30 is provided on the upper end surface of the second member 8. The shape of the receiving portion 30 is configured to be a concave shape corresponding to the shape of the tip portion of the hook portion 20 of the first member 6. Thereby, the front-end | tip part of the hook part 20 can be attached to the receiving part 30 so that attachment or detachment is possible. The first member 6 and the second member 8 are locked to each other when the distal end portion of the hook portion 20 is hooked on the receiving portion 30.

  As shown in FIGS. 2 and 4, the second member 8 is provided with a plurality of guide portions 32. Each of the plurality of guide portions 32 extends in the thickness direction of the second member 8 (that is, the direction from the second member 8 toward the first member 6). Each of the plurality of guide portions 32 is disposed corresponding to the plurality of rail portions 22 described above. That is, for example, the guide portion 32 is disposed at one location on one side 8 b of the second member 8 and at two locations on the other side 8 c of the second member 8. Each of the plurality of guide portions 32 is slidably attached to the corresponding rail portion 22. Thereby, the moving direction of the second member 8 relative to the first member 6 is restricted, and the second member 8 is slid in the direction approaching or separating from the first member 6.

  As shown in FIGS. 4 and 5, a support portion 34 for supporting the electronic device 4 in a vertical posture (that is, a posture perpendicular to the ground) from below is provided at the lower end portion of the second member 8. It has been. The support portion 34 is configured to have an L-shaped cross section. That is, the support portion 34 extends from the lower end portion of the second member 8 in the thickness direction of the second member 8 and the first portion 34a extends from the tip portion of the first portion 34a to the first portion 34a. A second portion 34b extending vertically.

  The first portion 34 a is provided with a plurality of slit portions 36 extending linearly. The plurality of slit portions 36 are arranged in parallel to each other. In addition, each magnitude | size of the some slit part 36 is set to the magnitude | size which a coin (not shown) can pass, for example.

  The second portion 34b is provided with an arc-shaped notch 38. This notch part 38 is for letting the power transmission part 26 escape so that the power transmission part 26 does not hit the second part 34b when the second member 8 is attached to the first member 6 as described later. It is.

[Electronic device charging procedure]
Next, a procedure for charging the electronic device 4 using the contactless charging device 2 described above will be described with reference to FIGS. FIG. 6 is a perspective view illustrating a state before the electronic device is charged using the non-contact charging apparatus according to the first embodiment. FIG. 7 is a perspective view showing a state where an electronic device is charged using the non-contact charging apparatus according to Embodiment 1. FIG. FIG. 8 is a cross-sectional view of the non-contact charging apparatus and the electronic device cut along the line AA in FIG.

  This Embodiment demonstrates the case where the 1st member 6 is attached to the wall surface 40 extended perpendicularly | vertically with respect to the ground. First, as illustrated in FIG. 6, the user places the electronic device 4 in a vertical posture and supports the support portion 34 of the second member 8 such that the front surface of the electronic device 4 faces the opening 8 a side of the second member 8. To support. At this time, the first portion 34a supports the electronic device 4 from below so that the electronic device 4 does not fall, and the second portion 34b prevents the electronic device 4 from falling to the first member 6 side. The back surface of the device 4 (that is, the surface opposite to the surface on which the touch panel 10 is provided) is supported.

  Thereafter, the user attaches the second member 8 to the first member 6 so that the plurality of guide portions 32 are respectively attached to the corresponding rail portions 22. Thereafter, when the user pushes the second member 8 toward the first member 6, the second member 8 is slid in a direction approaching the first member 6. At this time, as shown in FIGS. 7 and 8, the first member 6 and the second member 8 are locked to each other when the tip of the hook portion 20 is hooked on the receiving portion 30. In a state where the first member 6 and the second member 8 are locked to each other, the second member 8 is restricted from sliding with respect to the first member 6.

  As shown in FIG. 8, in a state where the second member 8 is attached to the first member 6, the power receiving coil 14 and the power transmitting coil 28 are opposed to each other, and a part of the electronic device 4 is in the recess 18. Get into. At this time, the back surface of the electronic device 4 pushes the power transmission unit 26 against the elastic restoring force of the plurality of coil springs 24. Thereby, the power transmission unit 26 is pressed against the back surface of the electronic device 4 by the elastic restoring force of the plurality of coil springs 24. As a result, the electronic device 4 is sandwiched between the second member 8 and the power transmission unit 26.

  In this state, when predetermined AC power is supplied to the power transmission coil 28 from a power transmission circuit (not shown) provided in the first member 6, electromagnetic induction occurs between the power reception coil 14 and the power transmission coil 28. As a result, the power from the power transmission coil 28 is transmitted to the power reception coil 14. The AC power generated by the power receiving coil 14 is rectified to DC power by a rectifier (not shown) provided inside the electronic device 4 and then charged to the secondary battery 16. The charging of the electronic device 4 is realized by, for example, a non-contact charging module that conforms to the non-contact charging standard Qi (Chi).

  As shown in FIG. 7, when the second member 8 is attached to the first member 6, at least a part of the touch panel 10 of the electronic device 4 is exposed to the outside through the opening 8 a of the second member 8. Exposed. Thereby, as shown in FIG. 8, the user operates the icon 12 or the like displayed on the touch panel 10 with the finger 42 through the opening 8 a of the second member 8 while charging the electronic device 4. Can do.

  Alternatively, by displaying a digital clock on the touch panel 10 of the electronic device 4, the user can see the digital clock displayed on the touch panel 10 through the opening 8 a of the second member 8. It can also be used as a wall clock.

  For example, even when a foreign matter (not shown) such as a coin enters the support portion 34, the foreign matter is discharged to the outside of the non-contact charging device 2 through the plurality of slit portions 36.

  When the charging of the electronic device 4 is completed, the user slides the second member 8 in a direction away from the first member 6 while pulling the hook portion 20 away from the receiving portion 30. Thereby, since the 2nd member 8 is removed from the 1st member 6, the electronic device 4 can be taken out outside.

  In the present embodiment, the first member 6 is attached to the wall surface 40, but the second member 8 can also be attached to the wall surface 40.

[effect]
Next, the effect obtained by the non-contact charging device 2 of the present embodiment will be described. As described above, when charging the electronic device 4, the electronic device 4 is sandwiched between the second member 8 and the power transmission unit 26. Thus, for example, by attaching the first member 6 to the wall surface 40 as in the present embodiment, the electronic device 4 can be charged while maintaining the electronic device 4 in a vertical posture, and the electronic device at the time of charging The degree of freedom of the 4 postures can be increased. As a result, since it is difficult for foreign matter to be sandwiched between the electronic device 4 and the power transmission unit 26, the power transmission efficiency from the power transmission coil 28 to the power reception coil 14 can be increased.

(Embodiment 2)
Next, the configuration of the non-contact charging apparatus according to Embodiment 2 will be described with reference to FIG. FIG. 9 is a perspective view showing a state before the non-contact charging apparatus according to Embodiment 2 is installed. In the following embodiments, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 9, in the non-contact charging device 2 of the present embodiment, the first member 6 is embedded in an attachment recess 46 provided on a top plate 44 of a desk extending horizontally with respect to the ground. The shape of the mounting recess 46 is configured to correspond to the shape of the first member 6. In a state where the first member 6 is embedded in the mounting recess 46, the second member 8 protrudes above the top plate 44.

  Therefore, in the non-contact charging device 2 of the present embodiment, the electronic device 4 can be charged while keeping the electronic device 4 in a horizontal posture. Furthermore, since the first member 6 is embedded in the mounting recess 46, the amount of protrusion from the top plate 44 of the non-contact charging device 2 can be suppressed to a small value. Thereby, when the user performs work on the top board 44, the contactless charging device 2 can be prevented from interfering with the work.

  Needless to say, it is possible to simply install the non-contact charging device 2 on the top plate 44 without providing the mounting recess 46 in the top plate 44.

(Embodiment 3)
Next, the configuration of the non-contact charging apparatus according to Embodiment 3 will be described with reference to FIG. FIG. 10 is a diagram illustrating a state in which the non-contact charging apparatus according to Embodiment 3 is installed.

  As shown in FIG. 10, in the non-contact charging device 2A of the present embodiment, a stand 48 is attached to and detached from the back surface of the first member 6A (that is, the surface opposite to the surface provided with the recess 18). Can be attached freely. The stand 48 is configured in a plate shape, for example, and is attached so as to be inclined with respect to the back surface of the first member 6A. Thereby, when the non-contact charging device 2A is installed on the top plate 50 of the desk extending horizontally with respect to the ground, the non-contact charging device 2A is supported in a state inclined with respect to the top plate 50 by the stand 48. The

  Therefore, in the non-contact charging device 2A of the present embodiment, the electronic device 4 can be charged while the electronic device 4 is maintained in an inclined posture (that is, a posture inclined with respect to the ground).

  In the present embodiment, the electronic device 4 is configured to be held in an inclined posture by using the stand 48. However, instead of such a configuration, for example, the following configuration may be used. That is, the above-described stand 48 is omitted, and the non-contact charging device 2A is inclined with respect to the ground by attaching rubber legs (not shown) to the four corners on the back surface of the first member 6A. It can be installed on an extended slope. Even with such a configuration, it is possible to charge the electronic device 4 while keeping the electronic device 4 in an inclined posture.

  The contactless charging apparatus according to the embodiments of the present invention has been described above, but the present invention is not limited to these embodiments. For example, the above embodiments may be combined.

  In each said embodiment, although the electronic device was comprised with the smart phone, it is not limited to this, For example, it can also comprise with various electronic devices, such as a mobile telephone, a tablet terminal, a digital camera, or an electric shaver.

  In each of the above embodiments, the first member is provided with the hook portion, and the second member is provided with the receiving portion. On the contrary, the first member is provided with the receiving portion, and the second member is provided with the receiving portion. A hook part can also be provided.

  In each of the above embodiments, the elastic member is configured by a coil spring, but is not limited thereto, and may be configured by, for example, various springs other than the coil spring or a rubber member that can be elastically deformed.

  The present invention can be applied as a non-contact charging device for charging an electronic device having a power receiving coil in a non-contact manner.

2, 2A Non-contact charging device 4 Electronic device 6, 6A First member 8 Second member 8a Opening portion 8b, 8c, 18a, 18b Side portion 10 Touch panel 12 Icon 14 Power receiving coil 16 Secondary battery 18 Recessed portion 20 Hook portion 22 rail portion 24 coil spring 26 power transmission portion 28 power transmission coil 30 receiving portion 32 guide portion 34 support portion 34a first portion 34b second portion 36 slit portion 38 notch portion 40 wall surface 42 finger 44, 50 top plate 46 mounting recess 48 stand

Claims (7)

A non-contact charging device for charging an electronic device having a power receiving coil in a non-contact manner,
A first member;
A power transmission unit provided on the first member and having a power transmission coil for supplying power in a non-contact manner to the power reception coil of the electronic device;
A second member that is attachable to the first member and that sandwiches the electronic device with the power transmission unit so that the power receiving coil and the power transmission coil face each other. Contact charging device. The contactless charging apparatus according to claim 1, further comprising an elastic member that is provided between the first member and the power transmission unit and that presses the power transmission unit against the electronic device. Furthermore, a hook portion provided on one of the first member and the second member;
A receiving portion provided on the other of the first member and the second member and capable of being hooked by the hook portion,
The non-contact charging device according to claim 1, wherein the first member and the second member are locked to each other when the hook portion is hooked on the receiving portion. The second member is provided with an opening,
The at least one part of the said electronic device is exposed outside through the said opening part when the said electronic device is inserted | pinched between the said power transmission part and the said 2nd member. The non-contact charging device described in 1. Further, a guide portion provided on the second member and extending toward the first member,
The non-contact charging device according to claim 1, further comprising: a rail portion that is provided on the first member and on which the guide portion is slidably mounted. The support part for supporting the said electronic device pinched | interposed between the said power transmission part and the said 2nd member is provided in the said 2nd member. The non-contact charging device described. The non-contact charging device according to claim 6, wherein the support portion is provided with a slit portion for discharging foreign matter to the outside.

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