JP2010096346A - Device for moving transmission-coil of noncontact charger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for moving a transmission-coil of a noncontact charger that can be made thin, small, and compact in size, ensuring inhibition of its width from becoming larger. <P>SOLUTION: The device 1 for moving a transmission-coil of a noncontact charger includes: a planet spindle wheel placed rotatably in a case body; a pulse motor 16 for rotating the planet spindle wheel placed in the case body so as to rotate the planet spindle wheel 10; a planetary gear 18 placed rotatably to the planet spindle wheel; an annular external gear 21 meshed with the planetary gear so as to rotate coaxially with the planet spindle wheel; a pulse motor attached to the case body for the rotation of the external ring-gear so as to rotate the external ring-gear; a power-transmission coil placed in part other than the axis of the planet spindle wheel; a control board provided in the case body; and a pulse motor drive-control circuit for driving the pulse motor for rotation of the planet spindle wheel and the pulse motor for the rotation of the external ring-gear which are placed on the control board, and moving the power-transmission coil connected with a cable to a predetermined position detected with a detection sensor. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a power transmission coil of a non-contact charger that moves a power transmission coil to a position detected by a detection sensor and charges an electronic device incorporating a power reception coil such as a mobile phone, a camera, a PDA, or a portable electronic terminal in a non-contact manner. It relates to a mobile device.

  Conventionally, a non-contact charger that charges an electronic device in a non-contact manner cannot be efficiently charged unless the power receiving coil of the electronic device is positioned accurately in the power transmission coil portion of the non-contact charger.

For this reason, the power transmission coil portion of the non-contact charger is fixedly installed, and the power reception coil of the electronic device is accurately positioned on the power transmission coil portion to perform charging.
In addition, it is considered that the position of the power receiving coil of the electronic device is detected by a detection sensor, and the power transmitting coil is moved using a screw, a rack, and a pinion. It is difficult to accurately place the power receiving coil of the electronic device in the power transmitting coil part, and there is a disadvantage that the charging effect is reduced if the position is slightly shifted. The latter is complicated in structure and is likely to increase the cost, and further thin. There was a problem that it was difficult to respond to the transformation.

JP 2009-89464 A JP2008-301553 JP-A-9-190938

  In view of the above-described conventional drawbacks, the present invention can move the power transmission coil to a position where the power reception coil can be efficiently charged even if the electronic device having the power reception coil built in the non-contact charger is easily positioned. An object of the present invention is to provide a moving device for a power transmission coil of a small and compact non-contact charger that can be reduced in thickness and reliably prevented from increasing in the width direction.

  Another object of the present invention is to provide a device for moving a power transmission coil of a non-contact charger that can be reliably performed without interfering with the wiring of the power transmission coil.

  The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.

  However, the drawings are for explanation only and do not limit the technical scope of the present invention.

  In order to achieve the above object, the present invention provides a case body, a planetary axle wheel rotatably mounted in the case body, and a planetary axle wheel rotation pulse attached to the case body for rotating the planetary axle wheel. A motor, a planetary gear rotatably attached to the planetary shaft wheel, a ring-shaped outer ring gear that meshes with the planetary gear and rotates on the same axis as the planetary shaft wheel, and the case that rotates the outer ring gear A pulse motor for rotating the outer ring gear attached to the body, a power transmission coil attached to a portion other than the axis of the planetary axle, a control board provided in the case body, and the control board provided in the control board A pulse motor for driving a planetary axle wheel rotation pulse motor and the outer ring gear rotation pulse motor to move the power transmission coil connected by a cable to a predetermined position detected by a detection sensor Constitute a moving device of the power transmission coils of a contactless charger in the dynamic control circuit.

As is clear from the above description, the present invention has the following effects.
(1) A case body, a planetary axle wheel rotatably mounted in the case body, a planetary axle wheel rotation pulse motor attached to the case body for rotating the planet axle axle, and the planetary axle wheel A planetary gear mounted rotatably, a ring-shaped outer ring gear meshing with the planetary gear and rotating on the same axis as the planetary wheel, and an outer ring gear rotation mounted on the case body for rotating the outer ring gear Pulse motor, a power transmission coil attached to a portion other than the axis of the planetary axle, a control board provided in the case body, and the planetary axle rotation pulse motor provided on the control board, A pulse motor drive control circuit that drives the pulse motor for rotating the outer ring gear and moves the power transmission coil connected by a cable to a predetermined position detected by a detection sensor. Since, the planetary shaft wheel, the planetary gear, the driving of the ring-shaped ring gear can be rotated moving the moving body to a predetermined coordinates (X, Y).
Therefore, compared with the conventional one using screws, racks and pinions, the thickness dimension can be reduced, the width dimension can be reduced, and the size can be reduced.
(2) According to the above (1), since all the movements are circular movements, they can be moved smoothly.
(3) According to the above (1), the moving body can be controlled by the control of the planetary axle wheel rotation pulse motor and the outer ring gear rotation pulse motor, so that the control can be facilitated.
(4) In the second aspect, the same effects as in the above (1) to (3) can be obtained, and the ring-shaped outer ring gear can be driven smoothly.
(5) According to the third aspect, the same effects as the above (1) to (3) can be obtained, and the cable connected to the power transmission coil can be reliably wired without interfering with other parts.

The perspective view which removed the cover body of the 1st form for implementing this invention. The disassembled perspective view of the 1st form for implementing this invention. Explanatory drawing of the state where a power transmission coil is located in the center of an outer ring | wheel gearwheel and a planetary axle wheel. Explanatory drawing which shows the rotation state only of the pulse motor for planetary shaft wheel rotation. Explanatory drawing which shows the rotation state only of the pulse motor for outer ring | wheel gear rotation. Explanatory drawing which shows the state which each pulse motor rotates synchronously. Explanatory drawing of the state which detects the position of a power transmission coil. Explanatory drawing which rotates the planetary shaft wheel rotation pulse motor, and moves it to the origin. Explanatory drawing of each quadrant shown in FIG. 8 and its rotation direction. Explanatory drawing of a conversion type | formula. Explanatory drawing of the state which rotates each pulse motor synchronizing. Explanatory drawing of each quadrant shown in FIG. 11 and its rotation direction. Explanatory drawing of the state which detects the position of a power transmission coil. Explanatory drawing of the state which rotates the planetary axle wheel rotation pulse motor. Explanatory drawing of each quadrant shown in FIG. 14 and its rotation direction. The 1st explanatory view of a conversion type. The 2nd explanatory view of a conversion type. The 3rd explanatory view of a conversion type. Explanatory drawing which shows the moving range of the power transmission coil of the upper part of a detection frame. Explanatory drawing which shows the movement range of the power transmission coil of the lower part of a detection frame. FIG. 4 is a detailed view of part A in FIG. 3. The A section fragmentary sectional view of FIG. The perspective view which removed the cover body of the 2nd form for implementing this invention. The B section fragmentary sectional view of FIG. The perspective view which removed the cover body of the 3rd form for carrying out the present invention. The C section partial sectional view of FIG. The perspective view which removed the cover body of the 4th form for carrying out the present invention. The D section fragmentary sectional view of FIG. The top view of the 4th form for carrying out the present invention.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

  In the first embodiment for carrying out the present invention shown in FIG. 1 to FIG. 22, reference numeral 1 denotes a mobile phone in which a receiving coil is incorporated at any position in a detection frame 4 provided on the cover body 3 of the case body 2; Power transmission of the non-contact charger of the present invention that automatically moves the power transmission coil 7 to the position detected by the detection sensor 6 that detects whether the power reception coil of the electronic device 5 such as a camera, PDA, or portable electronic terminal is located. In the coil moving device, the power transmitting coil moving device 1 of the non-contact charger can be rotated on a thin box-shaped case body 2 and a shaft 9 attached so as to protrude into the case body 8 of the case body 2. And a pinion 15 attached to the drive shaft 14 via reduction gears 12 and 13 rotatably attached to the shaft 11 attached to the case body 8. Rotation drive with The planetary gear wheel rotation pulse motor 16 attached to the case body 8 and the planetary gear 18 rotatably attached to the shaft 17 attached between the shaft center and the outer periphery of the planetary axle wheel 10. And a guide rotatably meshed with the planetary gear 18 and rotatably attached to the shafts 19, 19, and 19 attached to the case body 8 and arranged at equal intervals rotating on the same axis as the planetary axle wheel 10. The ring-shaped outer ring gear 21 supported by the gears 20, 20, 20 and the outer ring gear 21 are fixed to the drive shaft 23 via a reduction gear 22 attached so as to rotate integrally with the guide gear 20. The outer ring gear rotation pulse motor 25 attached to the case body 8 and driven by the pinion 24 and the shaft 26 attached to the outer peripheral portion other than the axis of the planetary gear 18 are attached. The electric coil 7, the control board 30 provided in the case body 2 outside the planetary axle wheel rotation pulse motor 16 and the outer ring gear rotation pulse motor 25, and the part where the control board 30 is provided A sensor provided with an outer ring gear sensor 27 for detecting the position of the outer ring gear 21 and a planetary axle wheel sensor 28 for detecting the position of the planetary axle wheel 10 provided in the case body 2 on the opposite side to the case body 2. Provided on the control board 30, a board 29, a relay board 34 having terminals 33, 33 connected to power transmission coil connection cables 32, 32 connected to the power transmission coil 7 fixed to the upper surface of the planetary gear 18. The detected planetary wheel rotation pulse motor 16 and the outer ring gear rotation pulse motor 25 are driven and detected by the detection sensor 6 connected by a cable 41. And a pulse motor drive control circuit 31 for moving the power transmission coil 7 to the set position.

  The cable 41 connected to the power transmission coil 7 is engaged with engagement holes 35, 35, 35 formed closer to the outer periphery of the planetary axle 10 than the control board 30 and engaging claws 36, 36, 36, a planetary shaft formed by the rotation of the planetary axle wheel 10 on the control board 30 side around the axis 9 of the planetary axle wheel 10 in the planetary axle wheel cover 37 attached to the back surface of the planetary axle wheel 10. An arc-shaped play 38 for a vehicle is disposed in an S shape so as to have an arc-shaped play 39 for the planetary gear 18 by the rotation of the planetary gear 18 on the planetary gear 18 side, and the shaft portion of the planetary gear 18. In the embodiment of the present invention, it is connected to the terminals 33a and 33a of the relay board 34 through a cable insertion hole 40 formed between the bearing portion 18a and the D-shaped shaft 17 inserted into the bearing portion 18a. Has been.

  The cable 41 to be inserted into the cable insertion hole 40 is installed in a fixed state at one end of the cable insertion hole 40 so that the cable 41 can be more reliably wired without interfering with other components. it can.

  As shown in FIG. 3, the moving device 1 of the power transmission coil of the non-contact charger having the above-described configuration has the power transmission coil 7 at the center position between the outer ring gear 21 and the planetary gear 18, and as shown in FIG. When only the vehicle rotation pulse motor 16 is rotated and the outer ring gear rotation pulse motor 25 is stopped, the planetary shaft wheel 10 connected to the planetary shaft wheel rotation pulse motor 16, the pinion 15, and the reduction gears 13, 12 is connected. Rotates in the CCW direction, the planetary gear 18 itself on the planetary axle 10 also rotates in the CCW direction at the center of the planetary axle 10.

  Moreover, since the planetary gear 18 is meshed with the fixed outer ring gear 21, it rotates in the CW direction.

  As shown in FIG. 5, when only the outer ring gear rotation pulse motor 25 rotates and the planetary shaft rotation pulse motor 16 stops, the outer ring gear rotation pulse motor 25 and pinion 24, the reduction gear 22, and the guide gear 20 When the outer ring gear 21 connected to the outer ring gear 21 rotates in the CW direction, the planetary gear 18 meshing with the outer ring gear 21 rotates in the CW direction at the center of the planetary gear.

  As shown in FIG. 6, the planetary axle wheel rotation pulse motor 16 and the outer ring gear rotation pulse motor 25 rotate in synchronization, and the planetary axle wheel rotation pulse motor 16 and the outer ring gear rotation pulse motor 25 synchronize. When rotating in the CW direction, the planetary gear 18 rotates at the center of the planetary wheel 10 and the outer ring gear 21 (the rotation of the planetary gear at the planetary gear center does not occur).

When used, the detection sensor 6 detects which quadrant the power transmission coil 7 is in.
For example, as shown in FIG. 7, when it is detected that the power transmission coil 7 is in the fourth quadrant, the planetary wheel rotation pulse motor 16 is rotated by θ ′ as shown in FIG. 8, and the position of the origin (0, 0) Move to. The rotation direction at this time is performed as shown in FIG. 9, and θ ′ is calculated by the conversion equation shown in FIG.

  Next, as shown in FIG. 11, the planetary wheel rotation pulse motor 16 and the outer ring gear rotation pulse motor 25 are rotated in synchronization with each other (the outer ring gear sensor 27 of the outer ring gear 21 is turned ON) + (reference excitation Rotate phase to ON). The rotation direction at that time is performed as shown in FIG.

  Next, as shown in FIG. 13, the position of the power transmission coil 7 is detected. This is because the power transmission coil 7 does not always return to the origin when the operation shown in FIG. 8 is performed due to backlash or the like.

  Next, as shown in FIG. 14, the planetary axle wheel rotation pulse motor 16 is rotated to (the planetary axle sensor 28 of the planetary axle 10 is turned on) + (the reference excitation phase is turned on). The rotation direction at that time is performed as shown in FIG.

  The details of the conversion formula shown in FIG. 10 are as follows with respect to the position coordinates (X, Y) of the electronic device 5 positioned within the detection frame 4 of the cover body 3 of the case body 2 detected by the detection sensor 6. Using the planetary gear mechanism, the power transmission coil 7 as a moving body is moved to (x, y).

  For example, as shown in FIG. 16, the position coordinate B (x, y) of the electronic device 5 is detected by the detection sensor 6.

O (o, o): Origin of the power transmission coil 7 at the center of the outer ring gear 21 and the planetary axle 10 A (o, r): Center coordinates of the planetary gear 18 r is from the center of the planetary gear 18 to the center of the power transmission coil 7 Length (rotating radius of moving body)
B (x, y): position coordinates of electronic device 5 Next, as shown in FIG. 17, the planetary axle wheel 10 and the outer ring gear 21 are rotated in synchronization from the state shown in FIG. The angle θ is rotated to an angle θ at which the angle formed by the line segment OA and the line segment is a right angle.

At this time, the rotation angle θ is an angle formed by the X axis and the line segment OB, and is as follows from the coordinates B (x, y):
θ = tan ⁻¹ (y / x) (Expression 1)
Further, the rotation direction of the planetary axle 10 and the outer ring gear 21 is determined depending on which quadrant the position of the electronic device 5 is located, and the angle formed by the line segment OA and the line segment OB is the shortest. The angle θ is rotated.

  The direction of rotation by each quadrant is as follows.

Quadrant 1: CCW
Quadrant 2: CW
3rd quadrant: CCW
Quadrant 4: CW
Next, as shown in FIG. 18 from the state shown in FIG. 17, the planetary axle wheel 10 is rotated with the outer ring gear 21 fixed, and the power transmission coil 7 is moved to the position B of the electronic device 5.
When the θ-rotated point is A ′ and the rotation angle of the planetary axle wheel 10 from the line segment OA ′ is θ ′, the reduction ratio of the planetary gear 18 and the outer ring gear 21 is ½. The rotation angle of 18 is 2θ ′.
Also, since line segments OA ″ and A ″ B have the same length r, ΔOBA ″ is an isosceles triangle.

  Therefore, the power transmission coil moves on the right angle line of OA ′.

B (x, y) is a conversion equation as shown in FIG. 10 according to the cosine theorem.
The rotation direction of the planetary axle 10 is determined by the X coordinate, and the relationship between the X coordinate and the rotation direction is X> O: CW
X <O: CCW
It is.
Therefore, from the equation 1 and the equation shown in FIG. 10, the rotation angle of the pulse motor from the origin is as follows.

The rotation angle of the pulse motor 16 for rotating the planetary axle wheel: θ + θ ′ (deg)
Number of pulses of the pulse motor 16 for rotating the planetary axle wheel: (θ + θ ′) / α (plus)
Rotation angle of pulse motor 25 for rotating outer ring gear: θ (deg)
Number of pulses of pulse motor 25 for rotating outer ring gear: θ / α (plus)
Rotational speed of the outer ring gear 21 and the planetary axle wheel 10 per pulse of the pulse motor 16 for rotating the planetary axle wheel = α (deg)
It is.

  In addition, the power transmission coil 7 can be moved in the frame indicated by the phantom line in FIG. 19 by the above-described operation, and the power transmission coil 7 can be moved to a position corresponding to the electronic device 5 in the upper half of the detection frame 4. The power transmission coil 7 moves within the frame indicated by the phantom line at 20, and the power transmission coil 7 can be moved to a position corresponding to the electronic device 5 in the lower half of the detection frame 4.

  The cable 41 connected to the control board 30 and the power transmission coil 7 is generated by the rotation of the planetary shaft wheel 10 and the planetary gear 18 by the rotation of the planetary shaft wheel 10 at the shaft 9 portion of the planetary shaft wheel 10. Due to the arc-shaped play 39 for the planetary gear, it is wired without interfering with other parts.

[Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 23 to 29 will be described. In the description of the different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention are denoted by the same reference numerals, and redundant description is omitted.

  The second embodiment for carrying out the present invention shown in FIGS. 23 and 24 is mainly different from the first embodiment for carrying out the present invention in that a cable insertion hole 40 in the shaft portion of the planetary gear 18 is used. The present invention is also applied to the moving device 1A of the power transmission coil of the non-contact charger in which the power transmission coil 7 and the cable 41 are thus connected in that the cable 41 that has passed through the power transmission coil 7 is directly connected. Therefore, the same effect as the first embodiment can be obtained.

  Note that the cable 41 on the power transmission coil 7 side of the cable insertion hole 40 is fixed so as not to sag.

  The third embodiment for carrying out the present invention shown in FIG. 25 and FIG. 26 differs from the first embodiment for carrying out the present invention mainly in the bearing portion 18a of the shaft portion of the planetary gear 18. A channel-shaped cable insertion hole 40A is used for the shaft 17 to be inserted, and the cable 41 is routed through the cable insertion hole 40A. Thus, the power transmission coil moving device 1B of the non-contact charger configured as described above is obtained. However, the same effect as the first embodiment for carrying out the present invention can be obtained.

  The fourth embodiment for carrying out the present invention shown in FIGS. 27 to 29 is mainly different from the first embodiment for carrying out the present invention in that the upper side has a semicircular arc shape and is made of a transparent material. The case body 2A using the formed cover body 3A is used, a channel-shaped cable insertion hole 40B is formed in the bearing portion 18a of the shaft portion of the planetary gear 18, the cable 41 is wired, and the outer periphery of the power transmission coil 7 The position of the power transmission coil 7 can be confirmed using a plurality of LEDs 42, 42, 42, 42, 42, 42 in the section, and thus the power transmission coil moving device 1 C of the non-contact charger configured in this way is used. However, the same effect as the first embodiment for carrying out the present invention can be obtained.

  The present invention is used in an industry for manufacturing a moving device for a power transmission coil of a non-contact charger.

1, 1A, 1B, 1C: a moving device for a power transmission coil of a non-contact charger,
2, 2A: case body, 3, 3A: cover body,
4: Detection frame, 5: Electronic device,
6: detection sensor, 7: power transmission coil,
8: Case body, 9: Shaft,
10: Planetary axle wheel, 11: Axle,
12: Reduction gear, 13: Reduction gear,
14: Drive shaft, 15: Pinion,
16: Pulse motor for planetary axle wheel rotation,
17: shaft, 18: planetary gear,
19: shaft, 20: guide gear,
21: Outer ring gear, 22: Reduction gear,
23: Drive shaft, 24: Pinion,
25: Pulse motor for rotating outer ring gear,
26: shaft, 27: outer ring gear sensor,
28: Planetary axle sensor, 29: Sensor board,
30: Control board, 31: Pulse motor drive control circuit,
32: Power transmission coil connection cable 33, 33a: Terminal,
34: Relay board, 35: Engagement hole,
36: locking claw, 37: planetary axle cover,
38: Arc-shaped play for planetary axles, 39: Arc-shaped play for planetary gears,
40, 40A, 40B: cable insertion hole,
41: Cable, 42: LED.

Claims (3)

A case body, a planetary axle wheel rotatably attached to the case body, a planetary axle wheel rotation pulse motor attached to the case body for rotating the planet axle axle, and a rotatable to the planet axle axle An attached planetary gear, a ring-shaped outer ring gear that meshes with the planetary gear and rotates on the same axis as the planetary wheel, and a pulse motor for rotating the outer ring gear attached to the case body that rotates the outer ring gear A power transmission coil attached to a portion other than the axis of the planetary axle, a control board provided in the case body, the planetary axle rotation pulse motor provided on the control board, and the outer ring gear And a pulse motor drive control circuit that drives a rotation pulse motor and moves the power transmission coil connected by a cable to a predetermined position detected by a detection sensor. Moving device of the power transmission coils of a contactless charger that. The ring-shaped outer ring gear is supported by two guide gears attached to the case body and a driving gear connected to the outer ring gear rotation pulse motor, which is driven by the outer ring gear rotation pulse motor. The moving device of the power transmission coil of the non-contact charger according to claim 1. The cable connected to the power transmission coil has a reverse play in the shaft part of the planetary axle wheel in the planetary axle wheel cover attached to the back surface of the planetary axle wheel from the control board, and via the shaft part of the planetary gear wheel. The apparatus for moving a power transmission coil of a non-contact charger according to claim 1, wherein the device is connected to the power transmission coil.

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