| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of an insufficient stroke even when any site of a door-pull lever is pushed, and to smoothly operate an unlocking drive mechanism by uniformly receiving the force of a sliding driving plate moved together with the door-pull lever by each member. SOLUTION: The unlocking drive mechanism is composed of the sliding driving plate 47, which is installed along the rear of a door pull 30 and in which a fitting projecting wall 51 is movably fitted into a notched section 36 formed to the front bottom wall 35 of the door pull, the door-pull lever 40 integrally mounted on the fitting projecting wall 51 so as to be horizontally displaced against the resilient force of return springs 44 in the recessed section 31 of the door pull, upper-lower rocking cam plates 65 and 65A, which are interposed between a supporting plate 60 for the door pull and the door pull 30 under the state, in which the cam plates are supported axially to central-sections shafts 37, and secured so as to synchronously cooperate with a fitting section 48 formed to the sliding driving plate 47 and in which free end sections 67 and 67 are abutted against the fitting section 48 under a uniform state, and tensile means 75 set up to the sliding driving plate 47 so as to be vertically moved through power conversion mechanisms with gear members 70 converting power from the rocking cam plates 65.
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