Electronic device with automatic positioning function

• US 9,225,193 B2
• Filed: 02/25/2013
• Issued: 12/29/2015
• Est. Priority Date: 03/23/2012
• Status: Expired due to Fees

• Current Assignee: Ming-Hsiang Yeh
• Original Assignee: Ming-Hsiang Yeh
• Inventors: Yeh, Ming-Hsiang
• Primary Examiner(s): Dinh, Paul
• Application Number:
  US13/775,329
• Publication Number:
  US 20130249308A1
• Time in Patent Office: 1,037 Days
• Field of Search: 307/104, 320107-108
• US Class Current: 1/1
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

The present invention provides an electronic device with automatic positioning function, which includes a device body and a magnetic unit. The device body contains therein a wireless transmission module. The wireless transmission module includes a transmission coil. The device body has one side in which a receiving section is formed. The transmission coil is received in the receiving section. The transmission coil has an outer circumference that is spaced from an inner circumference of the receiving section by a movement distance. The magnetic unit is set at the center of the transmission coil.

Claims

1. An electronic device with automatic positioning function, comprising:

a device body, which comprises a wireless transmission module for transmitting wirelessly electrical power, the wireless transmission module comprising a transmission coil, the device body having one side that comprises a receiving section;

a magnetic unit, which is set in center of the transmission coil; and

a disk, which is movably received in the receiving section of the device body and an outer circumference of which is spaced from an inner circumference of the receiving section by a spacing distance, the disk having a surface forming a central receiving chamber and a circumferential receiving chamber that circumferentially surrounds the central receiving chamber, the central receiving chamber receiving the magnetic unit, the circumferential receiving chamber receiving the transmission coil;

wherein when a device body of the other one electronic device is positioned on the device body of the electronic device, the magnetic unit received in the receiving section of the device body of the electronic device induces magnetic attraction with respect to a magnetic unit of the other one electronic device to cause the magnetic unit of the electronic device to automatically carry the transmission coil and the disk of the electronic device to move in unison from a first position where the disk locates in the receiving section to a second position in the receiving section so as to have the transmission coil of the wireless transmission modules of the two electronic devices precisely aligned with respect to each other;

wherein the second position aligns with respect to the position where the magnetic unit of the other one electronic device locates.

2. The electronic device with automatic positioning function as claimed in claim 1, wherein the wireless transmission module and the transmission coil are connected to each other by at least two first conductive wires, each of the first conductive wires being formed by twisting multiple strands of threads.

3. The electronic device with automatic positioning function as claimed in claim 1, wherein the disk has an opposite surface on which a plurality of spot bumps is formed, the spot bumps providing slidable engagement with a surface of the receiving section.

4. The electronic device with automatic positioning function as claimed in claim 1, wherein the magnetic unit comprises a first magnetic attraction element having positive polarity facing outward and a second magnetic attraction element having negative polarity facing outward, the first and second magnetic attraction elements being laid flat and jointed to each other to form a shape of disk, the magnetic unit being rotatably received in the central receiving chamber of the disk.

5. The electronic device with automatic positioning function as claimed in claim 4, wherein the central receiving chamber of the disk comprises an annulus of projecting flange along a circumference thereof, the projecting flange constraining the magnetic unit within the central receiving chamber.

6. The electronic device with automatic positioning function as claimed in claim 4, wherein a rotatable rotation shaft is arranged in the central receiving chamber of the disk and fixedly fit into a center of the magnetic unit.

7. The electronic device with automatic positioning function as claimed in claim 6, wherein a bearing fits in the central receiving chamber of the disk therein, an end of the rotation shaft being fixedly fit into the bearing for free rotation, an opposite end of the rotation shaft being fixedly fit into the center of the magnetic unit.

8. The electronic device with automatic positioning function as claimed in claim 4, wherein the central receiving chamber of the disk comprises a vertically extending raised post, the center of the magnetic unit being provided with a bearing, the bearing being fit over the raised post.

9. The electronic device with automatic positioning function as claimed in claim 1, wherein the magnetic unit comprises a magnetism conduction member and an electromagnetic coil, the electromagnetic coil being wound around the magnetism conduction member and being fixed together in the central receiving chamber of the disk.

10. The electronic device with automatic positioning function as claimed in claim 9, wherein the electromagnetic coil is connected to two second conductive wires, each of the second conductive wires being formed by twisting multiple strands of threads.