Portable wireless communications device

• US 6,546,265 B1
• Filed: 03/16/2001
• Issued: 04/08/2003
• Est. Priority Date: 03/18/1999
• Status: Expired due to Term

• Current Assignee: Kyocera Corporation
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Okuda, Tatsumi
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): RAMPURIA, SHARAD K
• Application Number:
  US09/805,774
• Time in Patent Office: 753 Days
• Field of Search: 455/550, 455/90, 455/575
• US Class Current: 455/575.1
• CPC Class Codes: H04B 1/3833 Hand-held transceivers
• CPC Class Codes: H04B 1/3883 Arrangements for mounting batteries or battery chargers
• CPC Class Codes: H04M 1/0262 for a battery compartment
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A portable wireless communications device including a casing having a circuit board accommodated therein for wireless communication and a cell chamber formed therein for accommodating a cell serving as a power source for the circuit board, the casing being formed with a peripheral wall defining the cell chamber and having an opening at each of an inlet side of the cell chamber and a bottom side thereof. The opening at the inlet side of the cell chamber is removably provided with a lid for closing the opening, and the opening at the bottom side of the cell chamber is fixedly provided with a sheet for closing the opening. This construction makes the device more compact and reduced in thickness.

Claims

1. A portable wireless communications device including a casing (1) having a circuit board (7) accommodated therein for wireless communication and a cell chamber formed therein for accommodating a cell (2) serving as a power source for the circuit board (7),

wherein the casing (1) is formed with a peripheral wall (5) defining the cell chamber, the peripheral wall (5) having an opening at each of an inlet side of the cell chamber and a bottom side thereof, the opening at the inlet side of the cell chamber being provided with a lid (13) removably attached to the casing (1) for closing the opening, the opening at the bottom side of the cell chamber being fixedly provided with a sheet separate from said peripheral wall for closing the opening.

2. A portable wireless communications device according to claim 1 wherein the sheet is in the form of a flat plate, the sheet (33) having a contour extending outwardly of the opening of the peripheral wall (5) at the cell chamber bottom side, the outward extension being in intimate contact with an end face of the peripheral wall (5).

3. A portable wireless communications device according to claim 1 wherein the sheet is in the form of a tray, the sheet (3) having a bottom (31) closing the opening of the peripheral wall (5) at the cell chamber bottom side, and a side wall (32) extending from an outer periphery of the bottom wall (31) and in intimate contact with the peripheral wall (5).

4. A portable wireless communications device according to any one of claims 1 to 3 wherein the sheet is made of a synthetic resin or metal.

5. A portable wireless communications device according to claim 2 or 3 wherein the sheet has a rear surface in contact with a surface of the circuit board (7).

6. A portable wireless communications device according to claim 2 or 3 wherein the casing (1) is molded from a resin with use of a pair of molds, and the peripheral wall (5) is molded from the resin with a parting line of the pair of molds positioned at an intermediate portion of thickness of the casing.

7. A portable wireless communications device according to claim 6 wherein the peripheral wall (5) comprises a first peripheral wall portion (51) at the cell chamber inlet side and a second peripheral wall portion (52) at the cell chamber bottom side, with the parting line serving as a boundary between the wall portions (51), (52), the peripheral wall portions (51), (52) defining respective spaces expanding in a direction away from the parting line, the first peripheral wall portion (51) projecting at the position of the parting line toward a center of the cell chamber beyond the second peripheral wall portion (52) to form a stepped portion (53) between the peripheral wall portions (51), (52).

8. A portable wireless communications device according to claim 7 wherein an outer end of the side wall (32) of the sheet (3) is in engagement with the stepped portion (53) of the peripheral wall (5).

9. A portable wireless communications device according to claim 7 wherein the side wall (32) of the sheet (3) is affixed to a surface of the second peripheral wall portion (52) of the peripheral wall (5).

10. A portable wireless communications device according to claim 7 wherein the cell (2) is formed on a side face thereof with a projection (21) engageable with the stepped portion (54) of the peripheral wall (5) when the cell (2) is accommodated in the cell chamber, and the stepped portion (54) prevents the cell (2) from slipping out of the cell chamber.

11. A portable wireless communications device according to claim 7 wherein a male connector (73) is connected to the cell (2) by a cord (74), and a female connector (72) for the male connector (73) to be inserted in is mounted on the circuit board (7), the stepped portion (53) of the peripheral wall (5) being in engagement with an upper end of the female connector (72) on the circuit board (7) to hold the female connector (72) on the circuit board (7).

12. A portable wireless communications device including a flat casing (1) having a circuit board (7) accommodated therein for wireless communication and a cell chamber formed therein for accommodating a cell (2) serving as a power source for the circuit board (7),

wherein the casing (1) is molded from a resin with use of a pair of molds and formed with a peripheral wall (5) defining the cell chamber, the peripheral wall (5) being molded from the resin with a parting line of the pair of molds positioned at an intermediate portion of thickness of the casing, the peripheral wall (5) having an opening at each of an inlet side of the cell chamber being removably provided with a lid (13) for closing the opening, and

wherein the opening of the peripheral wall (5) at the bottom of the cell chamber is fixedly provided with a sheet separate from said peripheral wall (5) for closing the opening.

13. A portable wireless communications device according to claim 12, wherein the sheet is in the form of a flat plate, the sheet (33) having a contour extending outwardly of the opening of the peripheral wall (5) at the cell chamber bottom side, the outward extension being in intimate contact with an end face of the peripheral wall (5).

14. A portable wireless communications device according to claim 12, wherein the sheet is in the form of a tray, the sheet (3) having a bottom (31) closing the opening of the peripheral wall (5) at the cell chamber bottom side, and a side wall (32) extending from an outer periphery of the bottom wall (31) and in intimate contact with the peripheral wall (5).

15. A portable wireless communications device according to claim 12 wherein the peripheral wall (5) comprises a first peripheral wall portion (51) at the cell chamber inlet side and a second peripheral wall portion (52) at the cell chamber bottom side, with the parting line serving as a boundary between the wall portions (51), (52), the peripheral wall portions (51), (52) defining respective spaces expanding in a direction away from the parting line, the first peripheral wall portion (51) projecting at the position of the parting line toward a center of the cell chamber beyond the second peripheral wall portion (52) to form a stepped portion (53) between the peripheral wall portions (51), (52).

16. A portable wireless communications device according to claim 15 wherein an outer end of the side wall (32) of the sheet (3) is in engagement with the stepped portion (53) of the peripheral wall (5).