Mobile terminal including wireless charging coil and magnetic sheet having inwardly receding portion

• US 10,574,090 B2
• Filed: 03/20/2019
• Issued: 02/25/2020
• Est. Priority Date: 06/28/2012
• Status: Expired due to Fees

• Current Assignee: Sovereign Peak Ventures, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Sovereign Peak Ventures, LLC (Dominion Harbor Enterprises, LLC)
• Inventors: Koyanagi, Yoshio, Yamamoto, Koichi, Hirobe, Takanori, Uejima, Hiroyuki, Tabata, Kenichiro, Yamaguchi, Shuichiro, Fujimura, Munenori, Hidaka, Akio, Naruse, Takumi
• Primary Examiner(s): Dunn, Drew A
• Assistant Examiner(s): Thapa, Sailesh
• Application Number:
  US16/359,590
• Publication Number:
  US 20190222061A1
• Time in Patent Office: 342 Days
• CPC Class Codes: H01F 27/245 made from sheets, e.g. grain-oriented H01F27/26 takes precedence
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 50/202 Casings or frames around the primary casing of a single cell or a single battery
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04M 1/0262 for a battery compartment
• CPC Class Codes: H04M 2250/04 including near field communication means, e.g. RFID
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A mobile terminal is provided with a housing having a rectangular shape in a plan view of the housing defined by two short sides along a lateral direction and two long sides along a longitudinal direction. A camera, a battery, and a circuit board are included in the housing. A wireless charging coil is arranged in the housing and includes a winding portion and two leg portions. A sheet is arranged in the housing. The sheet has a rectangular shape including four edges and four corner portions, wherein each pair of adjacent edges forms a virtual corner, each corner portion is receded inwardly from its corresponding virtual corner by a receding distance, and one of four receding distances is greater than other three of the four receding distances.

Claims

1. A mobile terminal comprising:

a housing having a rectangular shape in a plan view of the housing defined by two short sides along a lateral direction and two long sides along a longitudinal direction,

a camera, a battery, and a circuit board included in the housing;

a wireless charging coil arranged in the housing and including a winding portion and two leg portions; and

a sheet arranged in the housing,

wherein the sheet has a rectangular shape including four edges and four corner portions, each pair of adjacent edges forms a virtual corner, each corner portion is receded inwardly from its corresponding virtual corner by a receding distance, and one of four receding distances is greater than other three of the four receding distances.

2. The mobile terminal according to claim 1, wherein the wireless charging coil is formed in a shape selected from a circular shape, an oval shape, and a rectangular shape.

3. The mobile terminal according to claim 1, wherein the wireless charging coil is formed to define a hollow portion surrounded by the winding portion of the wireless charging coil, and the largest span of the hollow portion is greater than 15.5 mm.

4. The mobile terminal according to claim 3, wherein the hollow portion has a circular shape and a diameter of the circular-shape hollow portion is greater than 15.5 mm.

5. A mobile terminal comprising:

a housing having a rectangular shape in a plan view of the housing defined by two short sides along a lateral direction and two long sides along a longitudinal direction,

a camera, a battery, and a circuit board included in the housing;

a wireless charging coil arranged in the housing and including a winding portion and two leg portions; and

a sheet arranged in the housing,

wherein the sheet has a rectangular shape including four edges and four corner portions each formed by a pair of adjacent edges, and three of the four corner portions are convex and one of the four corner portions is an inwardly receding portion.

6. The mobile terminal according to claim 5, wherein the wireless charging coil is formed in a shape selected from a circular shape, an oval shape, and a rectangular shape.

7. The mobile terminal according to claim 5, wherein the wireless charging coil is formed to define a hollow portion surrounded by the winding portion of the wireless charging coil, and the largest span of the hollow portion is greater than 15.5 mm.

8. The mobile terminal according to claim 7, wherein the hollow portion has a circular shape and a diameter of the circular-shape hollow portion is greater than 15.5 mm.

9. A mobile terminal comprising:

a housing having a rectangular shape in a plan view of the housing defined by two short sides along a lateral direction and two long sides along a longitudinal direction,

a camera, a battery, and a circuit board included in the housing;

a wireless charging coil arranged in the housing and including a winding portion and two leg portions; and

a sheet arranged in the housing,

wherein the sheet has a rectangular shape including four edges and four corner portions each formed by a pair of adjacent edges, and a first shape of one of the four corner portions is different from a second shape of three of the four corner portions.

10. The mobile terminal according to claim 9, wherein the wireless charging coil is formed in a shape selected from a circular shape, an oval shape, and a rectangular shape.

11. The mobile terminal according to claim 9, wherein the wireless charging coil is formed to define a hollow portion surrounded by the winding portion of the wireless charging coil, and the largest span of the hollow portion is greater than 15.5 mm.

12. The mobile terminal according to claim 11, wherein the hollow portion has a circular shape and a diameter of the circular-shape hollow portion is greater than 15.5 mm.