发明名称 FOCAL DISTANCE SWITCHING CAMERA
摘要 PURPOSE:To absorb force applied to a member for holding a front-element, and to prevent an immoderate force from being applied to a focal distance switching mechanism, by constituting the titled camera so that when a shock or weight is applied to the member for holding the front-element, an operated side member of an operating mechanism moves to a withdrawn position side against an energizing force of a spring. CONSTITUTION:Between an operating cam 14 being an operating side member of this operating mechanism and an operating lever 18 being an operated side member, a pair of pins 18b, 18c of the operating lever 18 corresponding to a pair of cam faces 14b, 14c of the operating cam 14 abut on as one-side hit, and the operating lever 18 is oscillated to a withdrawn position side thereby. Accordingly, in a telephoto photographing state, in case an external force is applied to a shutter block 4 for holding a main lens 4a, even in case this camera is placed by putting the shutter block 4 to the lower side, the oscillating lever 18 is oscillated in a state separated from the operating cam 14, therefore, an external force is absorbed by a spring, and it can be prevented that an immoderate force is applied to the operating mechanism. In such a way, a damage of a focal distance switching mechanism can be prevented.
申请公布号 JPS63163440(A) 申请公布日期 1988.07.06
申请号 JP19860309365 申请日期 1986.12.26
申请人 MINOLTA CAMERA CO LTD 发明人 IWATA MICHIHIRO;KOBAYASHI HARUO;HATAMORI OSAMU
分类号 G03B17/12;G02B7/08;G02B7/09;G03B3/00;G03B13/36 主分类号 G03B17/12
代理机构 代理人
主权项
地址