Analog electronic timepiece

Abstract

An analog electronic timepiece capable of decelerating the rotation of a rotor (1a) of a step motor (1) through a train wheels before it is transmitted to an hour hand (17) and a minute hand (15), wherein the gravity center of a second shaft rotating body comprising a center wheel gear (9), a center wheel pinion (10), and a second shaft (11) to which the minute hand (15) is installed is displaced by an angle range of less than + / -90 DEG , from the axis of the second shaft (11), in the direction opposite to the direction in which a time indicating part (15a) of the minute hand (15) is extended so as to reduce a moment on the second shaft (11) caused by the minute hand (15) and the second shaft rotating body, whereby a breakage of the hand due to disturbance can be prevented even if the value of the holding energy of the step motor (1) is reduced.

Description

technical field [0001] The present invention relates to an analog electronic clock that displays time by hands, and particularly relates to a technique for reducing power consumption. Background technique [0002] The clock is not only used to know the correct time, but also has the function of so-called decoration. In almost all clocks, the design plays an important role. [0003] Most of the current clocks such as watches are generally electronic clocks using crystal oscillators, including digital clocks that use numbers to represent the time, and analog clocks that use dials and hands to represent the time. This analog electronic clock must satisfy the following two functions at the same time. [0004] One is the function of driving the pointer to rotate at a certain angle within a set time; the other is the function of maintaining the pointer without causing the pointer to jump under external impact. [0005] Figure 19 It is an expanded view showing the configuration...

AI Technical Summary

Problems solved by technology

When the pointer is used as the object, since the shape is roughly set, the external disturbance energy is greatly affected by the size of the inertia. Since the appearance design is given priority, the larger the needle shape, the more different the shape will be, resulting in imbalance. Increased, easily exceeds retention energy

As a result, the clock jump phenomenon occurs, and the two functions of the aforementioned analog clock cannot be realized.

[0013] Based on the above reasons, it is necessary to give priority to the design of the appearance and to increase the holding energy for setting, so the power consumption of the stepping motor will inevitably increase.

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