| 摘要 |
PROBLEM TO BE SOLVED: To provide electrical equipment provided with a rotatable knob attached to the front face of the electrical equipment with no weld line on the front face and with good appearance. SOLUTION: The configuration of the rotatable knob is roughly truncated-cone with a front face part 4 and a outside part 5, a roughly truncated-pyramid, a cylinder or a column. Two recessed grooves 7, 7 are formed in the outside part and extended to the front face part side and a protruded part is formed and extended between the recessed grooves 7, 7. Therefore, a resin injected from a gate flows to the front face part along the recessed grooves 7, 7 and does not generate the weld line. COPYRIGHT: (C)2005,JPO&NCIPI |
