Wireless charger installed with a two-dimensional moving mechanism

• US 8,907,619 B2
• Filed: 12/21/2011
• Issued: 12/09/2014
• Est. Priority Date: 06/25/2009
• Status: Expired due to Fees

• Current Assignee: Tanashin Denki Company Limited
• Original Assignee: Tanashin Denki Company Limited
• Inventors: Yamanaka, Takashi, Shukuya, Rei
• Primary Examiner(s): Berhanu, Samuel
• Assistant Examiner(s): Robbins, Jerry D
• Application Number:
  US13/333,428
• Publication Number:
  US 20120146579A1
• Time in Patent Office: 1,084 Days
• Field of Search: 320/108, 414/331, 74/29
• US Class Current: 320/108
• CPC Class Codes: G12B 5/00 Adjusting position or attitude, e.g. level, of instruments or other apparatus, or of parts thereof levels per se G01C9/00; Compensating for the effects of tilting or acceleration, e.g. for optical apparatus
• CPC Class Codes: Y10T 74/20354 Planar surface with orthogonal movement only

Abstract

A wireless charger installed with a two-dimensional moving mechanism which is simply configured, inexpensive and can be easily miniaturized is provided wherein a table is freely moved in the X-axis direction and the Y-axis direction. In the two dimensional moving mechanism, each pair of X axis pinions are arranged to simultaneously mesh with teeth near both ends of each rack arranged on an X axis slider and Y axis slider respectively. Each pair of pinions are driven by each motor and rotated in synchronization.

Claims

1. A wireless charger installed with a moving part comprising:

a lower case, where a first coil is positioned; and

an upper case which covers the lower case, the upper case comprising a top surface; and

the moving part, wherein

the first coil is moved near to a charge battery by the moving part and the charge battery is charged by supplying power from the first coil towards the charge battery when the charge battery attached with a second coil is set on the top surface of the upper case;

the moving part comprises;

a first drive part comprising an X axis motor which moves an X axis slider in an X axis direction along an X axis guide;

a second drive part comprising a Y axis motor which moves a Y axis slider in a Y axis direction along a Y axis guide; and

a table which moves in the X axis direction and the Y axis direction by a movement of the X axis slider and the Y axis slider;

wherein

the X axis slider includes a rack parallel to the X axis guide and an extension part parallel to Y axis;

the Y axis slider includes a rack parallel to the Y axis guide and an extension part parallel to X axis;

the table comprises;

a slider base attached to the X axis slider and the Y axis slider, and which moves in the X axis direction along the extension part of the Y axis slider when the X axis slider moves in the X axis direction, and moves in the Y axis direction along the extension part of the X axis slider when the Y axis slider moves in the Y axis direction; and

a table body fixed to the slider base, and the first coil attached to a top surface of the table body;

the first drive part further comprises a pair of X axis pinions arranged at a location to simultaneously mesh with teeth near both ends of a rack of the X axis slider, and the pair of X axis pinions are driven by the X axis motor and rotated in synchronization when the X axis slider is located at the center of a moving range;

the second drive part further comprises a pair of Y axis pinions arranged at a location to simultaneously mesh with teeth near both ends of a rack of the Y axis slider, and the pair of Y axis pinions are driven by the Y axis motor and rotated in synchronization when the Y axis slider is located at the center of a moving range;

the slider base includes a hole passing through the slider base in an X axis direction and a plurality of L shaped leg parts arranged on a bottom of the slider base and projecting downward from the bottom of the slider base;

the hole is slidably attached to the extension part of the Y axis slider;

at least one of the plurality of L shaped leg parts is arranged to be opposed to the other L shaped leg parts; and

the plurality of L shaped leg parts are slidably attached to the extension part of the X axis slider.

2. The wireless charger installed with the moving part according to claim 1, wherein each of the X axis pinions and the Y axis pinions is formed by a two stage gear, each pair of first stage gears of the X axis pinions and the Y axis pinions are meshed with the rack of the X axis slider or the Y axis slider, and the power of each of the X axis motor and the Y axis motor is transferred to each of the X axis pinions and the Y axis pinions via first worm gears including first worm and second worm which mesh with each pair of second stage gears of the X axis pinions and second worm gears including third worm and fourth worm which mesh with each pair of second stage gears of the Y axis pinions.

3. The wireless charger installed with the moving part according to claim 1,

wherein

the first drive part is formed as one integral unit in which the X axis motor which drives the X axis slider, first worm gears which are directly connected to an axis of the X axis motor and the pair of the X axis pinions which lies between the first worm gears and the rack of the X axis slider are each connected to a bracket.

4. The wireless charger installed with the moving part according to claim 3, wherein the worm gear is manufactured from metal.

5. The wireless charger installed with the moving part according to claim 1,

Wherein each of the first drive part and the second drive part is formed as one integral unit in which the Y axis motor which drives the Y axis slider, second worm gears which are directly connected to an axis of the Y axis motor and the pair of the Y axis pinions which lies between the second worm gears and the rack of the Y axis slider are each connected to a bracket.