| 摘要 |
PROBLEM TO BE SOLVED: To form the front surface wall of a case as a projecting part and to prevent the short shot in a sensor hole part by forming ruggedness at the center of the front surface sidewall connecting to the case sidewall provided with a guide groove for guiding a tape to be drawn outside the case. SOLUTION: When a moving metal mold parts from a stationary metal mold after product molding, a first slide core 41 moves in an arrow direction parting from the product and a second slide core 42 forming the guide groove in this space parts from the product. At the time of this movement, the central slide part 44 slides on the central wall of the product and, therefore, the projecting part 45 is formed at the front end of the first slide core 41 for the purpose of preventing scratching. The front end of the first slide core 41 outside the sliding region of the second slide core 42 is provided with recessed part 43 for the purpose of preventing the reduction in the thickness of the central wall of the lower case by the projecting part 45. Further, the occurrence of the short shot at the time of molding of the lower case is thereby obviated. Since the recessed part 43 of the first slide core 41 is disposed outside the sliding range of the second slide core 42, the flawing of the product does not occur.
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