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| Category | Subcategory | Representative cases |
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| Form/structure | Simplification | Idea stimulus question:
Can a part of the form or structure be simplified? |
| Complex gasket (to flat one) |
| Friction holder rear_comb pattern ribs (to simple pattern ribs) |
| Belt carrier_whole sawtooth (to partial sawtooth) |
| Speech circuit design_primary, speech IC and two relay (to secondary, OP Amp and one relay) |
| Elimination | Idea stimulus question:
Can a part of the form/structure be eliminated? |
| Cover duct_PE foam sheet |
| Fan motor transistor_Heat sink |
| Paper feeder_Center area |
| Wire harness of speaker assembly_EMI core |
| Back up battery for power failure_lithium battery |
| Main-NCU_cable tie |
| Operating and Main PBA_shrink tube |
| Combination | Idea stimulus question:
Can a part of the form or structure be combined? |
| Fan and box (to one piece) |
| Cover_side part and top part (to one piece) |
| Guide and auto document feeder (to one piece) |
| Facsimile machine_rear and top cover (to one piece) |
| Operating voltage_5.0 and 3.3 volts (to 3.3 volts) |
| Rearrangement | Idea stimulus question:
Can a part of the form or structure be rearranged? |
| The main PBA_primary component (to optional PBA) |
| PCB bottom_wire harness (to the side of the frame using pattern) |
| TRIAC_bottom heat sink (to the path of the air ventilation) |
| Handset Curl cord_Modular jack (to handset PBA) |
| Unused Elimination | Idea stimulus question:
Can an unused part of the form or structure be eliminated? |
| Relay_unused contacts |
| Hinge low guide_unused pin |
| Variable resistor_unused range |
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