MOBILE TERMINAL

• US 20090291709A1
• Filed: 01/24/2006
• Published: 11/26/2009
• Est. Priority Date: 01/31/2005
• Status: Active Grant

• Current Assignee: Bluebird Soft Incorporated (Bluebird,Inc.)
• Original Assignee: Bluebird Soft Incorporated (Bluebird,Inc.)
• Inventors: Lee, Jang-Won, Kim, Young-Bum
• Granted Patent: US 9,176,527 B2
• Time in Patent Office: Days
• US Class Current: 455/556.2
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1656 Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203
• CPC Class Codes: H04M 1/18 Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment H04M1/19 takes precedence
• CPC Class Codes: H04M 1/236 including keys on side or rear faces

Abstract

A mobile terminal includes an upper casing having at least one exposure opening formed by penetrating a predetermined area thereof, a lower casing coupled to the upper casing to face each other and having an accommodation space formed therein and capable of accommodating an internal part assembly including a printed circuit board, and a middle frame arranged between the upper casing and the lower casing and coupled to the upper casing and the lower casing, and supporting installation parts electrically connected to the internal part assembly and installed such that at least part thereof is exposed to the outside through the exposure opening. A resin mold waterproof ring which is injection molded of synthetic resin having elasticity to have a predetermined width along at least part of an edge portion of the middle frame is integrally coupled to the middle frame and, when the upper casing, the lower casing, and the middle frame are coupled one another, the resin mold waterproof ring is pressed by the upper casing and the lower casing to seal a gap between the upper casing and the lower casing.

Claims

1. A mobile terminal comprising:

an upper casing having at least one exposure opening formed by penetrating a predetermined area thereof;

a lower casing coupled to the upper casing to face each other and having an accommodation space formed therein and capable of accommodating an internal part assembly including a printed circuit board; and

a middle frame arranged between the upper casing and the lower casing and coupled to the upper casing and the lower casing, and supporting installation parts electrically connected to the internal part assembly and installed such that at least part thereof is exposed to the outside through the exposure opening,

wherein a resin mold waterproof ring which is injection molded of synthetic resin having elasticity to have a predetermined width along at least part of an edge portion of the middle frame is integrally coupled to the middle frame and, when the upper casing, the lower casing, and the middle frame are coupled one another, the resin mold waterproof ring is pressed by the upper casing and the lower casing to seal a gap between the upper casing and the lower casing.

2. The mobile terminal of claim 1, wherein the exposure opening of the upper casing includes a screen opening which is open so that a screen is viewed from the outside, the installation part includes a liquid crystal display, and the middle frame contacts and supports the liquid crystal display that is installed such that the screen is exposed to the outside through the screen opening at a front wall portion and contacts and supports the internal part assembly at a rear wall portion.

3. The mobile terminal of claim 2, wherein the middle frame and the resin mold waterproof ring are provided in a double injection molding method.

4. The mobile terminal of claim 3, wherein the middle frame is made of a plastic frame (polycarbonate and glass fiber 20%) and the resin mold waterproof ring is made of urethane.

5. The mobile terminal of claim 2, wherein the resin mold waterproof ring further includes a button ring having a ring shape to encompass an edge of a side button electrically connected to the internal part assembly and installed at side portions of the upper casing and the lower casing.

6. The mobile terminal of claim 2, wherein a plurality of coupling holes are formed to penetrate the middle frame, a coupling member coupling the upper casing and the lower casing passes through at least one of the coupling holes, and, when the upper casing, the lower casing, and the middle frame are coupled one another, the resin mold waterproof ring is pressed by the upper casing and the lower casing in opposite directions and maintains a compressed and deformed state compared to the original state.

7. The mobile terminal of claim 2, wherein the resin mold waterproof ring has a closed loop shape along the entire edge of the middle frame and an outer portion of the resin mold waterproof ring is exposed to the outside between the upper and lower casings when the upper casing, the lower casing, and the middle frame are coupled to one another.

8. The mobile terminal of claim 1, wherein the mobile terminal is an industrial PDA.

9. The mobile terminal of any of claim 2, wherein the mobile terminal is an industrial PDA.

10. The mobile terminal of any of claim 3, wherein the mobile terminal is an industrial PDA.

11. The mobile terminal of any of claim 4, wherein the mobile terminal is an industrial PDA.

12. The mobile terminal of any of claim 5, wherein the mobile terminal is an industrial PDA.

13. The mobile terminal of any of claim 6, wherein the mobile terminal is an industrial PDA.

14. The mobile terminal of any of claim 7, wherein the mobile terminal is an industrial PDA.