JP7172907B2 - wireless power supply - Google Patents

Description

The present invention relates to a wireless power supply device for wirelessly powering a mobile terminal.

Techniques for wirelessly supplying power to mobile terminals such as smartphones, tablet terminals, and mobile phones at short distances have been proposed. Also, a wireless power supply device has been proposed in which a holder for holding a mobile terminal is provided with a wireless power supply function (see Patent Document 1, for example). In this type of wireless power supply device, a holder for holding a mobile terminal is provided with a power transmission coil that generates a magnetic field, and a power reception coil built into the mobile terminal receives the magnetic field generated by the power transmission coil to generate electricity.

JP 2014-88092 A

By the way, the wireless power supply device introduced in Patent Document 1 has a mounting surface on which a mobile terminal is mounted. FIG. 1 of Patent Literature 1 shows a state in which the mounting surface of the wireless power supply device is arranged in a substantially horizontal direction, and the mobile terminal is laid flat on the mounting surface.

Such a flat-type wireless power supply device has an advantage that it is easy to control the positional relationship between the power transmission coil provided on the back side of the mounting surface and the mobile terminal. On the other hand, however, there is also the problem of laying the mobile device flat.

In general mobile terminals, the receiving coil is provided behind the screen. Therefore, the screen of the mobile terminal faces upward on the mounting surface of the flat-type wireless power supply device. By turning the screen upward, the entire screen of the mobile terminal is exposed, and the information displayed on the screen is also exposed. There is a risk that the driver's line of sight will be stolen by the information displayed on the screen.

Also, when the mobile terminal is laid flat as described above, the information displayed on the screen can be seen by others, making it difficult to protect the privacy of individual users.

To protect the privacy of individual users by hiding the screen of a mobile terminal by making the mounting table of a flat-type wireless power supply device a box with a lid and storing the mobile terminal itself inside the box. is also considered possible.
In this case, however, the mobile terminal is placed out of sight of the user, which may cause problems such as the user leaving the mobile terminal behind in the vehicle.
As described above, it is difficult to say that the conventional flat-type wireless power supply device is user-friendly.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a wireless power supply device for mobile terminals that is easy to use.

The wireless power supply device of the present invention is
a fixed holding portion having a holding wall surface extending in the vertical direction;
a cover with an end surface facing the holding wall surface;
a housing space formed below the cover and communicating with the outside through a gap between the holding wall surface and the end surface of the cover;
It is arranged in the housing space and is positionally changeable between a first position and a second position farther from the holding wall surface than the first position in the width direction connecting the holding wall surface and the end surface of the cover. a movable retainer;
a power transmission coil attached to the fixed holding portion or the movable holding portion;
In the wireless power supply device, the upper portion of the mobile terminal is accommodated in the gap between the holding wall surface and the end surface of the cover, and the bottom portion of the mobile terminal is supported by the movable holding portion.

The wireless power supply device of the present invention is a convenient wireless power supply device for mobile terminals.

1 is an explanatory diagram schematically showing the wireless power supply device of Example 1. FIG. 1 is an explanatory diagram schematically showing the wireless power supply device of Example 1. FIG. FIG. 11 is an explanatory diagram schematically showing a wireless power supply device of Example 2; FIG. 11 is an explanatory diagram schematically showing a wireless power supply device of Example 2; FIG. 11 is an explanatory diagram schematically showing the wireless power supply device of Example 3; FIG. 11 is an explanatory diagram schematically showing the wireless power supply device of Example 3; FIG. 11 is an explanatory diagram schematically showing a wireless power supply device of Example 4; FIG. 11 is an explanatory diagram schematically showing a wireless power supply device of Example 4;

The wireless power supply device of the present invention will be specifically described below.

A wireless power supply device of the present invention is a wireless power supply device for supplying power to a mobile terminal. As described above, the wireless power supply device of the present invention includes a fixed holding portion, a cover, an accommodation space, a movable holding portion, and a power transmission coil.

Of these, the fixed holding portion has a holding wall surface extending in the vertical direction, and the cover faces the holding wall surface at its end surface. Further, the accommodation space is formed below the cover and communicates with the outside through a gap between the holding wall surface and the end face of the cover. The movable holding portion is arranged in the accommodation space and is positionally changeable between a first position and a second position in a width direction connecting the holding wall surface and the end surface of the cover. Since the second position is farther from the holding wall surface than the first position, it can be said that the movable holding part approaches the holding wall surface at the first position and moves away from the holding wall surface at the second position. The power transmission coil is a coil for supplying power to the mobile terminal as described above, and is attached to the fixed holding portion or the movable holding portion.

In the wireless power supply device of the present invention, the accommodation space is formed below the cover. Therefore, it can be said that the accommodation space is below the gap between the holding wall surface and the end surface of the cover. Furthermore, it can be said that the accommodation space communicates with the outside of the wireless power supply device of the present invention above the gap through the gap between the holding wall surface above the accommodation space and the end face of the cover.

In the wireless power supply device of the present invention, the upper portion of the mobile terminal is accommodated in the gap between the holding wall surface and the end surface of the cover, and the movable holding portion supports the bottom portion of the mobile terminal. Since the movable holding part is located below the gap between the holding wall surface and the end face of the cover, the mobile terminal is held by the wireless power supply device of the present invention in an upright state with the upper part facing upward and the bottom part facing downward. be done.

Since the accommodation space in which the movable holding part is arranged is below the cover, the lower part of the mobile terminal including the bottom part is arranged below the cover and is hidden by the cover.
Therefore, according to the wireless power supply device of the present invention, the information displayed on the screen is not completely exposed unlike the above-described flat-type wireless power supply device.

Further, the movable holding portion changes position between a first position close to the holding wall surface and a second position far from the holding wall surface. When the position of the movable holding portion changes from the first position toward the second position, the distance between the gap between the holding wall surface and the end surface of the cover and the movable holding portion increases, and the wireless power supply device of the present invention is greatly separated. Hold the mobile terminal at two points. Therefore, in this case, the wireless power supply device of the present invention can stably hold a large mobile terminal.
On the contrary, when the position of the movable holding part is changed from the second position to the first position, the distance between the gap between the holding wall surface and the end face of the cover and the movable holding part becomes smaller, and the wireless device of the present invention becomes smaller. The power supply device holds the mobile terminal at two points relatively close to each other. Therefore, in this case, the wireless power supply device of the present invention can stably hold a small mobile terminal.
As described above, according to the wireless power supply device of the present invention having a movable holding portion, it can be said that it can support mobile terminals of various shapes and sizes, and can stably hold the mobile terminals of various shapes.

Further, when the position of the movable holding portion changes from the first position toward the second position, the clearance between the holding wall surface and the end surface of the cover and the movable holding portion move in the direction connecting the holding wall surface and the end surface of the cover, that is, in the width direction. leaves. Therefore, the mobile terminal held by them tilts obliquely, and the area of the screen of the mobile terminal hidden by the cover increases. This will ensure that the privacy of individual users is better protected.

In addition, in the wireless power supply device of the present invention, the upper portion of the mobile terminal is arranged in the gap between the holding wall surface and the end surface of the cover. Therefore, the user can visually recognize the mobile terminal through the gap. Therefore, the user can easily confirm the presence of the mobile terminal, and problems such as the mobile terminal being left behind in the vehicle interior are less likely to occur.

Thus, unlike the conventional flat-type wireless power supply device, the wireless power supply device of the present invention can protect the user's privacy without completely hiding the mobile terminal. It can be said that it is a wireless power supply device for terminals.

Hereinafter, the gap between the holding wall surface and the end surface of the cover may be referred to as a holding opening as required.

Hereinafter, the wireless power supply device of the present invention will be described for each component.

The fixed holding portion in the wireless power supply device of the present invention may have a holding wall surface extending in the vertical direction, and its shape is not particularly limited.
The vertical direction here means a direction crossing the horizontal direction, and is not limited to the vertical direction. The holding wall surface of the fixed holding part is sufficient as long as it defines, together with the end surface of the cover, a holding opening that communicates the accommodation space with the outside above the accommodation space.
The fixed holding part may have a portion other than the holding wall surface. For example, the fixed holding part may be box-shaped with an upward opening, the accommodation space may be defined inside the fixed holding part, and the movable holding part may also be arranged inside the fixed holding part.

The cover is arranged above the accommodation space, and a gap, that is, a holding opening is formed between the end surface of the cover and the holding wall surface of the fixed holding portion.
The shape of the cover is not particularly limited, but in order to hide the screen of the mobile terminal, the cover must have a certain length at least in the width direction, that is, in the direction connecting the holding wall surface and the end surface of the cover. Specifically, the length of the cover in the width direction is longer than the length of the movable holding portion in the width direction, and it is preferable to cover the movable holding portion at the second position from above.

The upper part of the mobile terminal is arranged in the gap, ie, the holding opening, formed between the end surface of the cover and the holding wall surface. At this time, the end face and holding wall surface of the cover may be in contact with the mobile terminal, or may be separated from the mobile terminal. In order to hold the mobile terminal more stably, it is preferable that the holding wall surface contacts the back surface of the mobile terminal. is more preferred.

In order to hold the mobile terminal more stably, the end face of the cover is preferably a curved surface protruding toward the holding wall surface. The retaining wall surface may also be a curved surface protruding toward the end surface of the cover.

In order to hold the mobile terminal more stably, the end face of the cover preferably presses against the surface of the mobile terminal. In this case, the cover may have a portion whose position can be changed in the width direction and which is biased toward the holding wall surface. This portion is called a movable cover portion. The movable cover portion may have an end surface of the cover, that is, a surface of the cover that partitions the holding opening together with the holding wall surface. A part of the cover may be the movable cover portion, or the entire cover may be the movable cover portion.
As the cover biasing element that biases the movable cover toward the holding wall surface, a known structure such as a helical spring or a torsion coil spring may be used.

Note that the cover may be positionally changeable with respect to the fixed holding portion in a manner other than the above. For example, the cover may rotate upward to expose the storage space. Alternatively, the cover may change its position in the width direction in a direction away from the holding wall surface to expose the accommodation space. In these cases, by exposing the storage space, it is possible to collect small packages, garbage, etc. that have fallen into the storage space.

The movable holding part is arranged in the accommodation space and is positionally changeable between a first position and a second position in the width direction. As described above, the distance between the movable holding portion and the holding wall surface is closer when the movable holding portion is at the first position, and farther apart when the movable holding portion is at the second position. Therefore, the movable holding portion, the holding wall surface, and the end face of the cover hold the mobile terminal in an upright or slightly inclined state when the movable holding portion is at the first position, and when the movable holding portion is at the second position. Tilt the mobile terminal, sometimes at a relatively large tilt.

The position of the movable holding part can be changed between the first position and the second position, and the driving mechanism for changing the position of the movable holding part is not particularly limited. For example, the position of the movable holding portion may be changed manually by the user, automatically by an urging force such as a spring, or automatically by an electric motor or the like. The drive mechanism may also have a guide section for guiding the direction in which the position of the movable holding section changes.

Furthermore, the wireless power supply device of the present invention preferably has a locking mechanism that fixes or semi-fixes the movable holding portion at the first position and the second position. More preferably, the locking mechanism is capable of fixing or semi-fixing the movable holding part at a plurality of positions between the first position and the second position. As the lock mechanism, a push-lock mechanism such as a heart cam that can fix the position of the movable holding portion may be adopted, or a damper mechanism such as an air damper or an oil damper that can semi-fix the position of the movable holding portion may be adopted. may be used, or other formats may be adopted. Furthermore, a friction material that frictionally engages with the movable holding portion or the fixed holding portion may be used as the lock mechanism. In this case, the friction material may be placed in the housing space, and the movable holding section may be semi-fixed at the first position or the second position by the frictional force between the friction material and the movable holding section. Alternatively, the movable holding portion may be semi-fixed at the first position or the second position by the frictional force between the friction material attached to the movable holding portion and the mating member arranged in the accommodation space. The mating member may be, for example, part of the fixed holding portion.
In this specification, a fixed state with a relatively small fixing force due to a frictional force, a damper, or the like is referred to as a semi-fixed state.

The movable holding part may be at the first position or at the second position when the wireless power supply device of the present invention does not hold the mobile terminal and is not in use. Preferably in the first position.

When the wireless power supply device of the present invention is used to hold a mobile terminal, the upper portion of the mobile terminal is placed in the holding opening and the bottom portion of the mobile terminal is supported by the movable holding portion. Therefore, when holding the mobile terminal in the wireless power supply device of the present invention, the user inserts the mobile terminal into the housing space through the holding opening and places the bottom portion of the mobile terminal on the movable holding portion. In order to facilitate this operation, it is preferable that the movable holding portion is at the first position close to the holding opening when the mobile terminal is not held and not in use.

The wireless power supply device of the present invention further includes a return mechanism that returns the movable holding portion, which has been moved from the first position to the second position, to the first position so that the movable holding portion is placed at the first position when not in use. is preferably provided.

Although the return mechanism is not particularly limited, for example, the drive mechanism for changing the position of the movable holding portion may be used as the return mechanism, or another return mechanism may be provided. Taking a rack and pinion mechanism as an example of the return mechanism, a rack extending in the width direction may be provided in the movable holding portion, and a pinion meshing with the rack may be pivotally supported by a mating member arranged in the housing space. The mating member arranged in the accommodation space may be, for example, part of the fixed holding portion.
When a part of the pinion is exposed to the outside of the wireless power supply device of the present invention and the user manually rotates the pinion, the position of the movable holding part provided with the rack changes in the width direction.

The drive mechanism, guide portion, lock mechanism, and return mechanism described above may be independent of each other, or one mechanism may serve a plurality of these functions.

The movable holding part may support the back surface of the mobile terminal in addition to the bottom part of the mobile terminal. In this case, the movable holding part preferably has an inclined wall as a part that supports the back surface of the mobile terminal. The inclined wall may be inclined in the same direction as the mobile terminal held by the wireless power supply device of the present invention. Specifically, the inclined wall may be inclined such that its lower end faces the end surface side of the cover in the width direction and its upper end faces the holding wall surface side in the width direction.
In this case, it is possible to hold the mobile terminal more stably by supporting the mobile terminal on the plane with the inclined wall.

The inclined wall may have a constant inclination angle, but preferably has a variable inclination angle. When the positional relationship between the holding opening and the movable holding section changes as the position of the movable holding section changes, the tilt angle of the mobile terminal held between the holding opening and the movable holding section also changes. If the inclination angle of the inclined wall changes as the positional relationship between the holding opening and the movable holding portion changes, the mobile terminal can be held more stably.

In this case, the wireless power supply device of the present invention preferably further has an angle maintaining element for maintaining the tilt angle of the tilt wall. As the angle maintaining element, a damper mechanism or a frictional engagement element may be used in the same manner as the locking mechanism of the movable holding portion described above. Also good.
In other words, even if the back surface of the mobile terminal is supported by the inclined wall, since the end surface of the cover is arranged on the front side of the mobile terminal, if the inclined wall is urged in the upward direction, the mobile terminal will move to the end surface of the cover. and the inclined wall, and the inclination angle of the inclined wall is maintained at the position where the surface of the mobile terminal abuts the end face of the cover. Therefore, in this case, not only can the inclination angle of the inclined wall be maintained, but also the mobile terminal can be held more stably by the inclined wall and the end surface of the cover.

The power transmission coil in the wireless power supply device of the present invention is a coil for supplying power to the mobile terminal, and is attached to the fixed holding portion or the movable holding portion. The power transmission coil may be attached to only one of the fixed holding portion and the movable holding portion, or may be attached to each of the fixed holding portion and the movable holding portion. When the power transmission coil is attached to each of the fixed holding part and the movable holding part, power can be supplied using the power transmission coil located near the power receiving coil of the mobile terminal, and power can be supplied efficiently. A plurality of power transmission coils may be attached to each of the fixed holding portion and the movable holding portion.

When the movable holding part has the above-described inclined wall and the back surface of the mobile terminal is supported by the inclined wall, the power transmission coil is preferably attached to the inclined wall. Since the power receiving coil is generally installed on the back side of the mobile device, by attaching the power transmitting coil to the slanted wall that is closest to the power receiving coil in the fixed holding part and the movable holding part, the power receiving coil This is because power can be supplied more efficiently.

In the wireless power supply device of the present invention, each of the drive mechanism, return mechanism, lock mechanism, power transmission coil, and the like may be turned on/off by the user himself or may be turned on/off electrically. The wireless power supply device of the present invention may have a control element for electrically controlling on/off of these various mechanisms. A control element may be provided exclusively for the wireless power supply device of the present invention, or may be used in combination with other control elements. For example, when the wireless power supply device of the present invention is mounted on a vehicle, an ECU (Engine Control Unit, Electronic Control Unit) of the vehicle may be used as a control element for the wireless power supply device of the present invention.

By the way, as described above, the upper part of the mobile terminal is placed in the holding opening in the held state. Therefore, even when most of the screen of the mobile terminal is hidden by the cover, part of the mobile terminal is visible to the user.
However, in some cases, the user may forget that the mobile terminal is in the holding state and leave it in the wireless power supply device of the present invention.
For example, if the wireless power supply device of the present invention is an in-vehicle wireless power supply device, it is not desirable for the mobile terminal to be left behind in terms of crime prevention.

Therefore, when the wireless power supply device of the present invention is a vehicle-mounted wireless power supply device, it is preferable to provide a warning device for alerting the user, that is, the passenger, that the mobile terminal has been left behind.

Specifically, the warning device preferably alerts the occupant when the mobile terminal is in the movable holding portion when parking. The warning device includes a parking detection element for detecting that the vehicle is in a parked state, a mobile terminal detection element for detecting whether or not the mobile terminal is on the movable holding part, a warning element for issuing a warning, and a parking detection element and the mobile terminal. It is preferable to have a warning control element or the like for driving and controlling the warning element based on the detection signal of the terminal detection element.

As the parking detection element, for example, an ECU for controlling operation of the vehicle, a GPS (Global Positioning System) of a mobile terminal, or the like can be used.

As the mobile terminal detection element, a receiver capable of receiving a signal transmitted from the mobile terminal itself by NFC (Near Field Communication), Bluetooth (registered trademark), or the like can be used. As the receiver, for example, a receiver for NFC or Bluetooth (registered trademark) mounted on a vehicle may be used. Alternatively, an ECU, to which signals are transmitted from the receiver, may be used as the mobile terminal sensing element. A dedicated receiver may be provided. Furthermore, a load sensor, an image sensor, or the like as a mobile terminal detection element may be provided in the vicinity of the movable holding portion.

As the warning element, it is possible to use something that gives the user some kind of stimulus by means of sound, light, vibration, or the like. As the warning elements, lights, horns, audio equipment, etc. installed in the vehicle may be used, or screens, lights, ringtones, vibration mechanisms, etc. installed in the mobile terminal may be used. . Of course, a dedicated signal generating element may be provided.

The warning control element drives and controls the warning element based on detection signals from the parking detection element and the mobile terminal detection element. Such a warning control element may also be used as a control element for electrically controlling the above-described drive mechanism and the like, and for example, it is possible to use an ECU of the vehicle. Also, a computer or the like may be provided separately as a dedicated warning control element.

Hereinafter, the wireless power supply device of the present invention will be described with specific examples.

(Example 1)
The wireless power supply device of Example 1 is a vehicle-mounted wireless power supply device.
1 and 2 are explanatory diagrams schematically showing the wireless power supply device of Example 1. FIG. 1 shows the state where the movable holding portion is at the first position, and FIG. 2 shows the state where the movable holding portion is at the second position.
Hereinafter, top, bottom, front, and rear refer to top, bottom, front, and rear in FIG. The front-rear direction corresponds to the width direction in the present invention, the front side corresponds to the front side in the traveling direction of the vehicle equipped with the wireless power supply device of Embodiment 1, and the rear side corresponds to the rear side in the traveling direction of the vehicle. do. Furthermore, the vertical direction corresponds to the vertical direction, and the front-rear direction corresponds to the horizontal direction. The vertical direction and the longitudinal direction are orthogonal to the width direction of the vehicle.

As shown in FIG. 1, the wireless power supply device of Example 1 has a fixed holding portion 1, a cover 2, a housing space 80, a movable holding portion 3, a drive mechanism 4, a power transmission coil 5, a control element 90, and a warning device 91. .

The fixed holding portion 1 has a substantially box-like shape having a bottom wall portion 10 and a standing wall portion 11 and opening upward. A storage space 80 is defined inside the box.
The bottom wall portion 10 has a substantially plate shape extending in the front-rear direction. The standing wall portion 11 has a substantially plate shape extending vertically above the bottom wall portion 10, and the lower end of the standing wall portion 11 and the front end of the bottom wall portion 10 are integrated. The standing wall portion 11 has a holding wall surface 12 extending in the vertical direction, and the holding wall surface 12 is directed rearward.

The cover 2 extends in the front-rear direction with the end face 20 directed forward, and has a substantially plate shape that covers the accommodation space 80 formed inside the fixed holding portion 1 from above. It can also be said that the accommodation space 80 is formed inside the fixed holding portion 1 below the cover 2 .
An end surface 20 of the cover 2 has a curved shape protruding forward and faces the upper portion of the holding wall surface 12 of the fixed holding portion 1 . A gap is formed between the end face 20 of the cover 2 and the holding wall surface 12 of the fixed holding part 1 . The gap is called a holding opening 85 .

The movable retainer 3 has a movable body 30 , a bottom retainer rib 31 , a movable bottom retainer 32 , and a bottom retainer biasing element 33 .
The movable main body 30 has a substantially plate shape extending in the front-rear direction and is arranged on the bottom wall portion 10 . Therefore, it can be said that the movable body 30 is arranged in the lower region of the accommodation space 80 . The movable main body 30 is slidable in the front-rear direction.
The bottom holding rib 31 is provided on the upper surface of the movable body 30 and extends upward from the upper surface of the movable body 30 .

The movable bottom holding portion 32 has a bottom holding portion main body 32M arranged on the upper surface of the movable main body 30 and on the front side of the bottom holding rib 31, and a pair of legs 32L extending from the bottom holding portion main body 32M. The movable bottom holding portion 32 is slidable in the front-rear direction, and is also slidable relative to the movable main body 30 .
The leg portions 32L extend rearward from both ends of the bottom holding portion main body 32M in the vehicle width direction (the end on the near side of the paper surface and the end on the far side of the paper surface in FIG. 1).

A bottom support biasing element 33 is attached to each rear end of the pair of legs 32L. Specifically, one end of each bottom retainer biasing element 33 is attached to the rear end of the corresponding leg 32L, and the other end of each bottom retainer biasing element 33 is attached to the rear of the leg 32L. , is attached to the fixed holding part 1 .
The bottom retainer biasing element 33 is a helical spring that expands to accumulate a biasing force and bias the movable bottom retainer 32 rearward. A bottom holding portion main body 32</b>M of the movable bottom holding portion 32 is arranged on the front side of the bottom holding rib 31 of the movable main body 30 . Therefore, when the movable bottom holding portion 32 is urged rearward by the bottom holding portion urging element 33 , the bottom holding portion main body 32</b>M approaches the bottom holding rib 31 .

The drive mechanism 4 has a guide portion 40 , an electric motor 41 and an operation portion 42 .
The guide portion 40 is a rack and pinion mechanism having a rack 42R and a pinion 42P. Of these, the rack 42R extends in the front-rear direction and is attached to the end surface of the movable holding portion 3 in the vehicle width direction (the end surface on the front side of the paper surface in FIG. 1). An electric motor 41 is attached to a pinion 42P that meshes with the rack 42R.

The electric motor 41 is rotatable in a first direction or in a second direction opposite to the first direction, and is controlled so as not to idle when turned off. The electric motor 41 is attached to the rotating shaft of the pinion 42P, fixed to the fixed holding portion 1, and rotationally drives the pinion 42P. The operation unit 42 is a switch exposed on the upper surface of the cover 2 , connected to a control element 90 to be described later by a lead wire (not shown), and electrically connected to the electric motor 41 via the control element 90 .

When the pinion 42P rotates, the rack 42R meshing with the pinion 42P slides forward or backward depending on the direction of rotation of the pinion 42P. The movable holding portion 3 to which the rack 42R is attached also slides forward or backward together with the rack 42R. As a result, the movable holding part 3 changes its position between the first position shown in FIG. 1 and the second position shown in FIG.
More specifically, when the pinion 42P rotates in the second direction when the movable holding portion 3 is in the first position shown in FIG. Position change towards the second position shown.
When the pinion 42P rotates in the first direction when the movable holding portion is at the second position shown in FIG. 2, the rack 42R slides forward and the movable holding portion 3 moves toward the first position.

The drive mechanism 4 in the wireless power supply device of the first embodiment not only functions as a mechanism for changing the position of the movable holding portion 3, but also moves the movable holding portion 3 between the first position and the second position as described later. It also functions as a lock mechanism that fixes them, and also functions as a return mechanism that returns the movable holding portion 3, which has changed its position from the first position toward the second position, to the first position.

The wireless power supply device of Example 1 has two sets of power transmission coils 5 . One of the two sets of power transmission coils 5 is called a first power transmission coil 51 and the other is called a second power transmission coil 52 .
The first power transmission coil 51 is attached to the front surface of the standing wall portion 11 of the fixed holding portion 1 with its central axis directed in the front-rear direction.
The second power transmission coil 52 is attached to the lower surface of the bottom wall portion 10 of the fixed holding portion 1 with its central axis directed in the vertical direction.

Here, when a coil-shaped metal member is arranged in the vicinity of the first power transmission coil 51 and the second power transmission coil 52, the magnetic field generated by the first power transmission coil 51 and the second power transmission coil 52 causes the metal member Electricity and heat can also be generated in
However, in the wireless power supply device according to the first embodiment, the leg portion 32L to which the coil-shaped bottom holding portion biasing element 33 is fixed has a central axis directed in the vertical direction with respect to the second power transmission coil 52. , that is, in the direction from the front side to the back side of the paper surface of FIGS. Therefore, it can be said that the bottom holding portion biasing element 33 is at a position out of the influence of the second power transmission coil 52 .

In addition, the bottom holding portion biasing element 33 is positioned behind the first power transmission coil 51 whose central axis is oriented in the front-rear direction, which is the front side of the central axis. However, as shown in FIGS. 1 and 2, the mobile terminal 95 is interposed between the first power transmission coil 51 and the bottom holding portion biasing element 33, and the magnetic field of the first power transmission coil 51 is cut off by the mobile terminal 95. be done. Therefore, it can be said that the bottom holding portion urging element 33 is at a position outside the influence of the first power transmission coil 51 as well.
For this reason, in the wireless power supply device of Example 1, although a metal helical spring is used as the bottom holding portion biasing element 33, the first power transmission coil 51 and the second power transmission coil 52 are configured to bias the bottom holding portion. It does not adversely affect element 33.

Control element 90 is connected to electric motor 41 , first power transmission coil 51 and second power transmission coil 52 . In the wireless power supply device of the first embodiment, the vehicle ECU is used as the control element 90 . The control element 90 also serves as a warning control element for the warning device 91 .

The warning device 91 has a parking detection element, a mobile terminal detection element and a warning element. Among these, the ECU of the vehicle is used as the parking detection element and the mobile terminal detection element. In addition, the vehicle's interior lights and horn are used as warning elements. In the wireless power supply device of Example 1, it can be said that the control element 90 also serves as a part of the warning device 91 .

The operation of the wireless power supply device of Example 1 will be described below.

In the first position shown in FIG. 1 , the movable holding part 3 is arranged below the gap formed between the end surface 20 of the cover 2 and the holding wall surface 12 of the fixed holding part 1 , that is, below the holding opening 85 .
At this time, the bottom portion 95B of the mobile terminal 95 can be supported by the movable holding portion 3 by inserting the mobile terminal 95 into the housing space 80 through the holding opening 85 . At this time, the upper part 95T of the mobile terminal 95 is supported by the holding wall surface 12 of the standing wall part 11 from the back surface 95BK side, and the bottom part 95B is supported by the movable main body 30 of the movable holding part 3, so that the mobile terminal 95 is in a slightly inclined state. It is held in the wireless power supply device.

Since the movable bottom holding portion 32 of the movable holding portion 3 is biased toward the bottom holding rib 31, it is inserted between the bottom holding rib 31 and the bottom holding portion main body 32M of the movable bottom holding portion 32. The bottom portion 95B of the mobile terminal 95 is sandwiched between the bottom holding rib 31 and the bottom holding portion main body 32M and is stably held therebetween.

As shown in FIG. 1 , most of the screen 95D of the mobile terminal 95 is arranged below the cover 2 and hidden by the cover 2 . Therefore, at this time, the screen 95D of the mobile terminal 95 is difficult to see, and the user's privacy is protected.

At this time, the first power transmission coil 51 is closer to the back surface 95BK side of the mobile terminal 95 than the second power transmission coil 52, that is, closer to the power receiving coil (not shown) of the mobile terminal 95. Therefore, the control element 90 supplies power to the mobile terminal 95 through the first power transmission coil 51 at this time.

When the user operates the operation part 42 to change the position of the movable holding part 3 toward the second position, the control element 90 drives the electric motor 41 to rotate the pinion 42P in the second direction. Then, the rack 42R slides rearward, and the position of the movable holding portion 3 changes toward the second position shown in FIG. The mobile terminal 95 supported by the movable holding portion 3 changes its state as the position of the movable holding portion 3 changes.

Specifically, when the movable holding part 3 is rearwardly displaced toward the second position, the bottom portion 95B of the mobile terminal 95 is also rearwardly displaced. Therefore, the mobile terminal 95 is retracted rearward in the accommodation space 80, and greatly tilts with the bottom portion 95B directed downward and rearward and the upper portion 95T directed upward and forward. At this time, the end surface 20 of the cover 2 contacts the screen 95D on the surface of the mobile terminal 95, and the amount of exposure of the mobile terminal 95 above the holding opening 85 is greatly reduced. Therefore, the area of the screen 95D of the mobile terminal 95 that is hidden by the cover 2 increases, and the screen 95D of the mobile terminal 95 becomes even more difficult to see.
It should be noted that the bottom holding portion urging element 33 urges the movable bottom holding portion 32 rearward even when the movable holding portion 3 is at the second position. Therefore, the bottom portion 95B of the mobile terminal 95 is sandwiched between the bottom holding rib 31 and the bottom holding portion main body 32M and stably held therebetween even when the movable holding portion 3 is at the second position. be.

When the user stops operating the operation unit 42, the electric motor 41 stops. Then, the rotation of the pinion 42P stops, and accordingly the positions of the rack 42R and the movable holding portion 3 also stop changing. Therefore, the movable holding part 3 is fixed at that position. That is, it can be said that the drive mechanism 4 in the wireless power supply device of the first embodiment also functions as a lock mechanism for fixing the movable holding portion 3 .
By fixing the movable holding part 3 , the wireless power supply device of the first embodiment can stably hold the bottom portion 95</b>B of the mobile terminal 95 .
In addition, the drive mechanism 4 in the wireless power supply device of the first embodiment can fix the movable holding portion 3 at any position steplessly between the first position and the second position.

When the user operates the operation part 42 to change the position of the movable holding part 3 toward the first position, the control element 90 drives the electric motor 41 to rotate the pinion 42P in the first direction. Then, the rack 42R slides forward, and the position of the movable holding portion 3 changes forward toward the first position shown in FIG. As a result, the bottom portion 95B of the mobile terminal 95 also changes its position forward, and the mobile terminal 95 stands up. Then, the amount of exposure of the mobile terminal 95 above the holding opening 85 is increased. Therefore, at this time, the user can easily grasp the upper portion 95T of the mobile terminal 95 and easily take out the mobile terminal 95 from the wireless power supply device of the first embodiment.

Thus, it can be said that the drive mechanism 4 in the wireless power supply device of the first embodiment also functions as a return mechanism that returns the movable holding portion 3, which has changed its position from the first position toward the second position, to the first position.

For example, when the user takes out the mobile terminal 95 from the movable holding part 3 that is not in the first position, the control element 90 , that is, the mobile terminal detection element of the ECU detects that the mobile terminal 95 is not on the movable holding part 3 . . Then, the control element 90 drives the electric motor 41 so that the pinion 42P rotates in the first direction and the rack 42R slides forward. For this reason, the movable holding part 3 is arranged at the first position with its position changed toward the front.

As described above, in the wireless power supply device of the first embodiment, the movable holding portion 3 is returned to the first position shown in FIG. 1 when the mobile terminal 95 is not held and is not in use.
At the first position, since the movable holding part 3 is below the holding opening 85, the next operation of supporting the bottom part 95B of the mobile terminal 95 on the movable holding part 3 is easy.

Furthermore, the drive mechanism 4 as a return mechanism functions as a return mechanism even when the mobile terminal 95 is left behind in the wireless power supply device of the first embodiment while the movable holding portion 3 has not reached the first position.

Specifically, when the vehicle is parked while holding the mobile terminal 95 in the wireless power supply device of the first embodiment, the control element 90, that is, the ECU functions as a parking detection element and a mobile terminal detection element, and the vehicle is parked. And it detects that the mobile terminal 95 is on the movable holding part 3 . Then, the control element 90 controls the rotation of the electric motor 41, the pinion 42P rotates in the first direction, the rack 42R slides forward, and the position of the movable holding portion 3 changes forward to move to the first position. placed in position. As a result, the amount of exposure of the mobile terminal 95 above the holding opening 85 is increased, making it easier for the user to notice that the mobile terminal 95 has been left behind.

Furthermore, in the wireless power supply device of Example 1, if the mobile terminal 95 remains on the movable holding portion 3 during parking, the warning element of the warning device 91 issues a warning to the user. Specifically, first, the room light flashes for a predetermined period of time, and if the mobile terminal 95 is not removed from the wireless power supply device even then, a horn sounds at a low volume. This makes it possible to call attention to the user who left the mobile terminal 95 behind. The warning stops when the mobile terminal 95 is removed from the wireless power supply device.

(Example 2)
The wireless power supply device of Example 2 is substantially the same as the wireless power supply device of Example 1 except for the shape of the cover and the shape of the movable holding portion. Therefore, the wireless power supply device of the second embodiment will be described below, focusing on the differences from the wireless power supply device of the first embodiment.
3 and 4 are explanatory diagrams schematically showing the wireless power supply device of the second embodiment. 3 shows the state where the movable holding portion is at the first position, and FIG. 4 shows the state where the movable holding portion is at the second position.

As shown in FIG. 3 , the cover 2 in the wireless power supply device of Example 1 has a general cover portion 21 , a movable cover portion 22 and a cover biasing element 23 . The general cover portion 21 extends in the front-rear direction and has a substantially plate shape that covers the accommodation space 80 from above. The movable cover portion 22 has a small piece shape with the end surface 20 directed forward, and is attached to the lower and front side of the general cover portion 21 . A helical spring-like cover biasing element 23 is interposed between the movable cover portion 22 and the general cover portion 21 . The cover biasing element 23 is compressed to accumulate biasing force, and biases the movable cover portion 22 forward, that is, in a direction approaching the holding wall surface 12 .

The movable holding portion 3 has a movable main body 30 extending in the front-rear direction and having a substantially plate shape, and two bottom holding ribs 31 provided on the upper surface of the movable main body 30 . The two bottom holding ribs 31 are arranged with an interval in the front-rear direction. Of the two bottom holding ribs 31, the front rib 31F on the front side has an inclined surface 31S. The inclined surface 31S is a rear side surface of the front rib 31F, and is inclined from downward and rearward to upward and forward.

According to the wireless power supply device of Example 2, as shown in FIGS. It is sandwiched with the holding wall surface 12 provided in the portion 11 . Since the portion of the movable cover portion 22 on the side of the end surface 20 is made of a relatively soft material, damage to the screen 95D of the mobile terminal 95 is suppressed.

The bottom portion 95B of the mobile terminal 95 is supported on the upper surface of the movable main body 30 in the movable holding portion 3 between the two bottom holding ribs 31 when the movable holding portion 3 is in the first position, as shown in FIG. be. As shown in FIG. 4, when the movable holding part 3 is at the second position, the bottom part 95B of the mobile terminal 95 is supported on the upper surface of the movable main body 30 between the two bottom holding ribs 31 and It is also supported by the inclined surfaces 31S of the ribs 31F.
Therefore, the wireless power supply device of Example 2 can also stably hold the mobile terminal 95, and in particular, can stably hold the upper portion 95T of the mobile terminal 95 regardless of its posture.

(Example 3)
The wireless power supply device of Example 3 does not have a drive mechanism, but has a helical spring as a return mechanism, the movable holding part has an inclined wall, the power transmission coil is attached to the inclined wall, and the movable It differs greatly from the wireless power supply device of Example 2 in that a rubber friction material is attached to the lower surface of the holding portion and that the vertical wall portion of the fixed holding portion has a top wall portion. It is roughly the same as the wireless power supply device. The wireless power supply device according to the third embodiment will be described below, focusing on the differences from the wireless power supply device according to the second embodiment.
5 and 6 are explanatory diagrams schematically showing the wireless power supply device of Example 3. FIG. 5 shows the state where the movable holding portion is at the first position, and FIG. 6 shows the state where the movable holding portion is at the second position.

As shown in FIGS. 5 and 6, the return mechanism 45 in the wireless power supply device of Example 3 is a helical spring that compresses and accumulates biasing force. One end of the helical spring is attached to the rear end portion of the movable holding portion 3, and the other end of the helical spring is attached to the fixed holding portion 1 behind the rear end of the movable holding portion 3. .

The movable holding part 3 includes a substantially plate-shaped movable body 30 , bottom holding ribs 31 extending upward from the upper surface of the movable body 30 , and integrated with the movable body 30 on the front side of the bottom holding ribs 31 . an inclined wall 35; The bottom holding rib 31 and the inclined wall 35 are separated in the front-rear direction. The slanted wall 35 has a substantially plate shape and is slanted from downward and rearward to upward and forward. That is, the inclined wall 35 has a lower end directed toward the end face 20 in the front-rear direction and a top end directed toward the holding wall surface 12 in the front-rear direction.

The wireless power supply device of Example 3 has only one set of power transmission coils 5 . The power transmission coil 5 is attached to the inclined wall 35 of the movable holding portion 3 and has its central axis directed in a direction orthogonal to the inclination direction of the inclined wall 35 .

A friction member 48 made of rubber is attached to the lower surface of the movable body 30 in the movable holding portion 3 . The friction material 48 is interposed between the lower surface of the movable main body 30 and the upper surface of the bottom wall portion 10 of the fixed holding portion 1 and is frictionally engaged with the upper surface of the bottom wall portion 10 .

The standing wall portion 11 of the fixed holding portion 1 has a general portion 15 and a top wall portion 17 . The general portion 15 is continuous with the bottom wall portion 10 and extends vertically. The top wall portion 17 is continuous with the upper end portion of the general portion 15 and extends rearward. The holding wall surface 12 formed by the end surface of the top wall portion 17 faces the end surface 20 of the movable cover portion 22 and forms a curved surface protruding rearward.

In the wireless power supply device of Example 3, the biasing force of the return mechanism 45, that is, the helical spring, is smaller than the frictional force between the friction material 48 and the upper surface of the bottom wall portion 10 when the mobile terminal 95 is on the movable holding portion 3. . Therefore, as shown in FIGS. 5 and 6, when the mobile terminal 95 is held by the movable holding portion 3, the frictional force between the friction material 48 and the upper surface of the bottom wall portion 10 causes the movable holding portion 3 to move freely. semi-fixed to the position of

When the user pushes backward the mobile terminal 95 whose bottom portion 95B is supported by the movable holding portion 3 against the frictional force, the movable holding portion 3 moves from the first position shown in FIG. 5 to the second position shown in FIG. The position changes toward the position, and the mobile terminal 95 tilts greatly. In the second position, the back surface 95BK of the mobile terminal 95 is supported by the inclined wall 35. As shown in FIG. Therefore, according to the wireless power supply device of the third embodiment, it is possible to stably hold the mobile terminal 95 especially at the second position.

In addition, in the wireless power supply device of Example 3, the power transmission coil 5 is attached to the inclined wall 35 . As shown in FIGS. 5 and 6, since the inclined wall 35 is near the back surface 95BK of the mobile terminal 95, power is efficiently supplied from the power transmitting coil 5 to the power receiving coil of the mobile terminal 95. FIG. Further, in the wireless power supply device of Example 3, by attaching the power transmission coil 5 to the inclined wall 35 arranged near the rear surface 95BK of the mobile terminal 95, it is not necessary to attach the power transmission coil 5 to other places. Therefore, according to the wireless power supply device of the third embodiment, it is possible to reduce the number of power transmission coils 5 compared to the wireless power supply device of the first embodiment and the wireless power supply device of the second embodiment.

When the mobile terminal 95 whose bottom portion 95B is supported by the movable holding portion 3 is pushed forward while the movable holding portion 3 is at the second position, the movable holding portion 3 moves from the second position shown in FIG. 5, and the mobile terminal 95 stands up. As described above, in the wireless power supply device of the third embodiment, the user can manually change the position of the movable holding portion 3 between the first position and the second position. Further, the position of the movable holding portion 3 can be semi-fixed by the friction material 48 .

In the natural state where no load is applied to the mobile terminal 95, the frictional force between the friction material 48 and the upper surface of the bottom wall portion 10 is smaller than the biasing force of the return mechanism 45, that is, the helical spring. Therefore, when the mobile terminal 95 is not held, the movable holding part 3 is returned toward the first position by the biasing force of the return mechanism 45 .

In the wireless power supply device of Example 3, the upper portion 95T of the mobile terminal 95 is sandwiched between the end surface 20 of the movable cover portion 22 and the holding wall surface 12 provided on the top wall portion 17 . Since the end face 20 of the movable cover part 22 and the holding wall surface 12 are both curved, the upper part 95T of the mobile terminal 95 is stably held.

(Example 4)
The wireless power supply device of Example 4 is substantially the same as the wireless power supply device of Example 2 except for the movable holding portion. The wireless power supply device according to the fourth embodiment will be described below, focusing on the differences from the wireless power supply device according to the second embodiment.
7 and 8 are explanatory diagrams schematically showing the wireless power supply device of Example 4. FIG. 7 shows the state where the movable holding portion is at the first position, and FIG. 8 shows the state where the movable holding portion is at the second position.

The movable holding portion 3 in the wireless power feeder of the fourth embodiment includes a substantially plate-shaped movable main body 30, bottom holding ribs 31 extending further upward from the upper surface of the movable main body 30, and substantially plate-shaped bottom holding ribs 31. It has an inclined wall 35 pivotally supported by the movable body 30 on the front side of 31, and an inclined wall urging element 38 that urges the inclined wall 35 in the rising direction.

As shown in FIG. 7 , the inclined wall 35 has a substantially plate-like inclined portion 36 and a shaft portion 37 provided below the inclined portion 36 . The shaft portion 37 is pivotally supported by the movable body 30 , and the inclined wall 35 is rotatable around the shaft portion 37 . A tilted wall biasing element 38 is attached to the shaft portion 37 of the tilted wall 35 . The inclined wall urging element 38 has the shape of a torsion coil spring and urges the inclined wall 35 in the rising direction. Here, "the inclined wall 35 rises" means that the inclined wall 35 approaches the vertical direction. You can also paraphrase it. The "direction in which the inclined wall 35 rises" is the counterclockwise direction in FIGS.

The inclined wall 35 inclines upward and forward from downward and rearward in both the first position shown in FIG. 7 and the second position shown in FIG. Therefore, also in the wireless power supply device of the fourth embodiment, the inclined wall 35 has its lower end directed toward the end surface 20 in the front-rear direction and its upper end directed toward the holding wall surface 12 in the front-rear direction.
A power transmission coil 5 is attached to the inclined wall 35 .

In the wireless power supply device of the fourth embodiment, the inclined wall 35 supports the back surface 95BK of the mobile terminal 95, and the upper portion 95T of the mobile terminal 95 is sandwiched between the inclined wall 35 and the end face 20 of the movable cover portion 22. Therefore, according to the wireless power supply device of the fourth embodiment, it is possible to hold the mobile terminal 95 more stably.

The present invention is not limited to the embodiments described above and shown in the drawings, and can be modified as appropriate without departing from the scope of the invention. Also, each component shown in this specification including the embodiments can be arbitrarily extracted and combined for implementation.

1: Fixed holding part 12: Holding wall surface 2: Cover 20: End surface of cover 22: Movable cover part 3: Movable holding part 35: Inclined wall 4: Return mechanism (driving mechanism) 45: Return mechanism 5: Power transmission coil 80: Accommodating Space 85: holding opening (gap between the holding wall surface and the end surface of the cover)
91: Alert device 95: Mobile terminal 95T: Top part of mobile terminal 95B: Bottom part of mobile terminal

Claims (6)

a fixed holding portion having a holding wall surface extending in the vertical direction;
a cover with an end surface facing the holding wall surface;
a housing space formed below the cover and communicating with the outside through a gap between the holding wall surface and the end surface of the cover;
It is arranged in the housing space and is positionally changeable between a first position and a second position farther from the holding wall surface than the first position in the width direction connecting the holding wall surface and the end surface of the cover. a movable retainer;
a power transmission coil attached to the fixed holding portion or the movable holding portion;
An upper portion of the mobile terminal is accommodated in a gap between the holding wall surface and the end surface of the cover, and a bottom portion of the mobile terminal is supported by the movable holding portion;
The wireless power supply device , wherein the cover includes a movable cover portion that has the end face, is positionally changeable in the width direction, and is biased toward the holding wall surface . The movable holding part has an inclined wall,
The wireless power feeder according to claim 1, wherein the widthwise distance between the lower end portion of the inclined wall and the holding wall surface is greater than the widthwise distance between the upper end portion of the inclined wall and the holding wall surface. a fixed holding portion having a holding wall surface extending in the vertical direction;
a cover with an end surface facing the holding wall surface;
a housing space formed below the cover and communicating with the outside through a gap between the holding wall surface and the end surface of the cover;
It is arranged in the housing space and is positionally changeable between a first position and a second position farther from the holding wall surface than the first position in the width direction connecting the holding wall surface and the end surface of the cover. a movable retainer;
a power transmission coil attached to the fixed holding portion or the movable holding portion;
An upper portion of the mobile terminal is accommodated in a gap between the holding wall surface and the end surface of the cover, and a bottom portion of the mobile terminal is supported by the movable holding portion;
The movable holding part has an inclined wall,
The wireless power supply device , wherein a distance in the width direction between the lower end portion of the inclined wall and the holding wall surface is greater than a distance in the width direction between the upper end portion of the inclined wall and the holding wall surface . The inclination angle of the inclined wall is variable,
4. The wireless power supply device according to claim 2 , wherein said inclined wall is biased in a rising direction. 5. The apparatus according to any one of claims 1 to 4, further comprising a return mechanism for returning the movable holding portion, which has changed its position from the first position toward the second position, to the first position. Wireless power supply device. mounted on the vehicle
a wireless power supply device according to any one of claims 1 to 5;
and a warning device for alerting an occupant when the mobile terminal is on the movable holding portion when the vehicle is parked.

Images