Rugged modular portable computer including modules hinged along an edge

• US 5,430,607 A
• Filed: 12/31/1992
• Issued: 07/04/1995
• Est. Priority Date: 12/31/1992
• Status: Expired due to Fees

• Current Assignee: North Atlantic Industries, Inc. (Leonardo S.p.A.)
• Original Assignee: North Atlantic Industries, Inc. (Leonardo S.p.A.)
• Inventors: Smith, Stephen W.
• Primary Examiner(s): Phillips, Michael W.
• Application Number:
  US07/999,213
• Time in Patent Office: 915 Days
• Field of Search: 248/632-634, 248/917-923, 312/223.2, 312/223.3, D14/100, D14/106, 364/708.1, 360/137, 174/52.3, 174/35 R, 174/35 GC, 361/680-687, 361/694, 361/695, 361/697, 361/707, 361/709-711, 361/715, 361/724, 361/816-818
• US Class Current: 361/679.34
• CPC Class Codes: G06F 1/1615 with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function constructional details of portable telephones comprising a plurality of mechanically joined movable body parts H04M1/0206
• 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: H05K 7/1429 for circuits carrying a CPU and adapted to receive expansion cards

Abstract

A portable computer includes a processor, processor associated memory and control circuitry, and a memory disk drive assembly for storing software programs to form an integral computer unit. The integral computer unit has a CPU module, a display module, a user control module with a user control interface, module connectors, environmental protective barriers for blocking entry of EMI and moisture into the computer unit and a vibration isolator for energy absorbingly mounting the unit to the drive assembly. The display module includes a display device that is separately housed and removably interconnected with the CPU module. The modules are connected by hinges along at least one interconnecting edge of each module. The module connectors are disposed along at least one interconnecting edge of each of the modules to permit separation of the modules at non-hinged edges and pivotal movement about the hinged edges for improved accessibility. The connecting hardware may include a protrusion and groove in each module. Preferably, a gasket is included between the protrusion and groove. The computer preferably includes a fan assembly with an air sensor for sensing airflow through the fan assembly.

Claims

1. A portable computer having a processor, processor associated memory and control circuitry, and a memory disk drive assembly for storing software programs, forming an integral computer unit, comprising:

a CPU module including;

a) a plurality of circuit boards, said boards having said processor, said processor associated memory and control circuitry mounted thereon;

b) a chassis, said chassis including means for receiving and transmitting electrical communication signals between said plurality of circuit boards; and

c) means for interfacing said CPU module with external devices;

a display module including a display device, said display module separately housed and removably interconnected with said CPU module;

a user control module having a user control interface, said interface including a keyboard and said control module being separately housed and removably interconnected with said display module;

means for connecting each of said modules to form said integral computer unit, said connecting means including hinges disposed along at least one interconnecting edge of each of said modules to permit separation of said modules at non-hinged edges and pivotal movement about said hinged edge for improved accessibility therebetween;

environment barrier means, including gaskets, for blocking the entry of EMI and moisture into said computer unit, said gaskets disposed around areas exposed to said environment including between said connected modules; and

a vibration isolator for energy absorbingly mounting said integral computer unit, including said disk drive assembly, to said chassis.

2. The portable computer according to claim 1, further including an expansion module having computer apparatus for one of connection to and exchange with an existing module of the computer.

3. The portable computer according to claim 1 wherein said means for connecting includes a protrusion and a groove in each module for cooperatively joining one module to another.

4. The portable computer according to claim 3 wherein said gasket is disposed between said groove and said protrusion that cooperatively join adjacent modules.

5. The portable computer according to claim 4 wherein said gasket is a hollow, silicone formed and electrically conductive.

6. The portable computer according to claim 1 wherein said display module includes a display glass window disposed in front of said display device, wherein said glass window is coated with an electrically conductive coating, said coating being terminated around the periphery of said glass window with electrically conductive means to ground electromagnetic energy which impinges upon said window.

7. The portable computer according to claim 1 wherein, said display module includes an air intake assembly, said assembly having a dust filter and means for substantially preventing entry of rain and electromagnetic interference (EMI).

8. The portable computer according to claim 1 wherein said user control module includes a trackball.

9. The portable computer according to claim 1 wherein said user control module includes a hinge for attaching said control module to said display module to allow said modules to be pivotally folded together about said hinge.

10. The portable computer according to claim 1, wherein said user control module includes means for attaching to said display module and tilting said display at an angle relative to said user control module.

11. The portable computer according to claim 1, wherein said CPU module includes an input/output interfacing area through which external devices are connectable, said area includes a plurality of openings for facilitating a plurality of expansion cards, each of said openings having a surrounding slot housing a gasket, and

a metallic plate closing each of said openings, said plate includes means for compressing against said gasket thereby shielding said openings from EMI and moisture intrusion.

12. The portable computer according to claim 1 wherein said disk drive assembly includes:

an enclosure having an indent formed between extended edges to form a channel along at least one of two sides;

a housing having a protruding portion to slidingly mate with said channel of said enclosure;

a lock and a clamp disposed in a cavity formed by the mating of said protruding portion of said housing and said channel of said enclosure, said lock having a first and second selectable position whereby when said lock is in said first position, said clamp is contacted against said enclosure, thereby retaining said enclosure in said housing.

13. The portable computer according to claim 1 wherein said vibration isolator further comprises:

energy absorbing material adapted to absorb vibration energy; and

a rigid plate mounted upon said energy absorbing material and removably supporting a computer unit, said rigid plate further being adapted to cooperate with said energy absorbing material to substantially prevent said energy from damaging said computer apparatus.

14. The portable computer according to claim 13, wherein said energy absorbing material includes a plurality of holes.

15. The portable computer according to claim 1, further including a fan assembly having means for sensing airflow through said fan and means for adjusting fan speed in accordance with preselected temperature settings.

16. The portable computer according to claim 1, further including an air plenum heatsink having an opening center area surrounded by an outer heat conductive medium, said medium for passing heat to said open center area and allowing airflow through said open center area whereby heat transferred thereto is removed via said airflow.

17. The portable computer according to claim 16, further including heat conductive material disposed on said outer heat conductive medium of said air plenum heatsink for improving heat transfer to said open center area.

18. A light weight and compact computer comprising:

a CPU module for housing processor components including a processor, processor associated memory and control circuitry;

a display module separately housed and interconnected with said CPU module, said display module for housing a display device and a display window, said window including shielding means for preventing entry and exit of EMI through said window;

an expansion module separately housed and interconnected with said display module, said expansion module for housing additional computer apparatus for connection to said CPU module; and

means for forming each said module into an integral computer unit, said means for forming including shielding means for shielding EMI and moisture from entering between said modules; and

hinging means disposed along at least one interconnecting edge of each of said modules to facilitate pivotal movement of said modules about said edge for improved accessibility.

19. The computer defined by claim 18, wherein said interconnected modules form an integral housing including precipitation entry inhibiting means for facilitating sustained operation of the computer while said computer is exposed to a precipitation event.

20. The portable computer according to claim 19, wherein said precipitation entry inhibiting means includes an air intake assembly having a dust filter and means for substantially preventing entry of rain and electromagnetic interference (EMI).

21. The portable computer according to claim 18, further including an expansion module having computer apparatus for one of connection to and exchange with an existing module of the computer.

22. The portable computer according to claim 18, wherein said means for connecting includes a protrusion and a groove in each module for cooperatively joining one module to another.

23. The portable computer according to claim 22, wherein said gasket is disposed between said groove and said protrusion that cooperatively join adjacent modules.

24. The portable computer according to claim 23, wherein said gasket is hollow, silicone formed and electrically conductive.

25. The portable computer according to claim 18, wherein said display module includes a display glass window disposed in front of said display device, wherein said glass window is coated with an electrically conductive coating, said coating being terminated around the periphery of said glass window with electrically conductive means to ground electromagnetic energy which impinges upon said window.

26. The portable computer according to claim 18, wherein said user control module includes means for attaching to said display module and tilting said display at an angle relative said user control module.

27. The portable computer according to claim 18, wherein said CPU module includes an input/output interfacing area through which external devices are connectable, said area includes a plurality of openings for facilitating a plurality of expansion cards, each of said openings having a surrounding slot housing a gasket, and a metallic plate closing each of said openings, said plate including means for compressing against said gasket thereby shielding said openings from EMI and moisture intrusion.

28. The portable computer according to claim 18 wherein said disk drive assembly includes:

an enclosure having an indent formed between extended edges to form a channel along at least one of two sides;

a housing having a protruding portion to slidingly mate with said channel of said enclosure;

a lock and a clamp disposed in a cavity formed by the mating of said protruding portion of said housing and said channel of said enclosure, said lock having a first and second selectable position whereby when said lock is in said first position, said clamp is contacted against said enclosure, thereby retaining said enclosure in said housing.

29. The portable computer according to claim 18, further including a vibration isolator, said isolator comprising:

energy absorbing material adapted to absorb vibration energy; and

a rigid plate mounted upon said energy absorbing material and removably supporting a computer unit, said rigid plate further being adapted to cooperate with said energy absorbing material to substantially prevent said energy from damaging said computer unit.

30. The portable computer according to claim 29, wherein said energy absorbing material includes a plurality of holes.

31. A portable computer according to claim 18, further including a fan assembly having means for sensing airflow through said fan and means for adjusting fan speed in accordance with preselected temperature settings.

32. The portable computer according to claim 18, further including an air plenum heatsink having an opening center area surrounded by an outer heat conductive medium, said medium for passing heat to said open center area and allowing airflow through said open center area whereby heat transferred thereto is removed via said airflow.

33. The portable computer according to claim 32, further including heat conductive material disposed on said outer heat conductive medium of said air plenum heatsink for improving heat transfer to said open center area.