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    • 6. 发明授权
    • Reduction gear of electronic wristwatch with stepping motor and sweep
second hand
    • 带步进电机和秒针的电子手表减速机
    • US4378957A
    • 1983-04-05
    • US195200
    • 1980-04-11
    • Daniel D. MalkinAlexei V. SimbirtsevBoris A. PeredkovGennady A. Kruglov
    • Daniel D. MalkinAlexei V. SimbirtsevBoris A. PeredkovGennady A. Kruglov
    • G04C3/14G04B13/00G04B19/02G04B29/00G04B31/00G04B33/10G04C3/00G04B37/00
    • G04C3/008G04B13/00G04B19/02G04B29/00G04B31/00
    • The reduction gear of an electronic wristwatch comprises three concentric output shafts adapted to be rotated at different speeds and operatively connected with each other and with the shaft of a stepping motor through gear wheels. A shaft making one revolution per hour has mounted thereon a friction wheel and a bearing means made in the form of a supporting bush press fitted in a bore of the plate of the wristwatch. The bush is mounted so that a portion thereof projects from the plate toward the bridge of the wristwatch, coordinated with respect to the plate and attached thereto by threaded means. The shaft passes freely through a bore in the supporting bush and is restricted from an unlimited axial displacement in one direction by an end face of the supporting bush, and in the other direction by the end face of that pinion which is mounted on the shaft with interference fit. The reduction gear of an electronic wristwatch can be used by the watch-making industry in the production of quartz wristwatches having a stepping motor, and of like timepieces.
    • PCT No.PCT / SU79 / 00028 Sec。 371日期:1980年4月11日 102(e)1980年4月10日PCT申请日1979年4月27日PCT公布。 出版物WO80 / 00380 日期1980年3月6日。电子手表的减速装置包括三个同心的输出轴,其适于以不同的速度旋转并且彼此可操作地连接,并且与步进马达的轴通过齿轮。 每小时进行一转的轴上安装有摩擦轮和轴承装置,该摩擦轮和支承衬套压配合在手表的板的孔中。 衬套被安装成使得其一部分从板朝着手表的桥突出,相对于板协调并通过螺纹装置附接到其上。 轴自由地穿过支撑衬套中的孔,并且通过支撑衬套的端面限制在一个方向上的无限轴向位移,并且在另一方向上被安装在轴上的小齿轮的端面限制, 过盈配合 电子手表的减速装置可以由手表制造业用于生产具有步进电机的石英手表和类似​​的钟表。