| 摘要 |
PROBLEM TO BE SOLVED: To provide a sliding commodity outlet door unit equipped at a commodity outlet of an automatic vending machine for cup drinks, with high security at a low cost. SOLUTION: A door unit 20 includes a front door 21 closed by being engaged with a commodity outlet frame 11; a rear door 22 having a rack gear 22b disposed in parallel inside the front door 21 and interlocked with a pinion gear 31 engaged to a drive motor 30, which is followed by the front door 21; a protrusion 23 having a slope 23a on a plane 21a facing the front door 21 and the rear door 22, and a protrusion 24 having a slope 24a on a plane 22a. A linking pin 25 is fixed to the front door 21, and a long hole 26 is disposed on the rear door 22 so as to insert the linking pin 25 therethrough. Between a plate 25a attached on the linking pin 25 and the rear door 22, a compression spring 27 is disposed to surround the linking pin 25, so that the compression spring 27 acts to make the front door 21 close to the rear door 22. The linking pin 25, the long hole 26, the compression spring 27 and the protrusions 23, 24 constitute a door lock mechanism. COPYRIGHT: (C)2007,JPO&INPIT
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