Moon phase displaying mechanism of wrist watch

Abstract

The invention discloses a moon phase displaying mechanism of a wrist watch. The moon phase displaying mechanism is an independent modular mechanism, a tapped foot is sleeved with a moon phase wheel and is arranged on a roller fixing base in a press fitting mode, the roller fixing base is connected with a movement base plate, the moon phase wheel is perpendicularly meshed with a roller wheel piece, the roller wheel piece is arranged on a roller in a press fitting mode, the two shaft ends of the roller are arranged in big round holes in roller supports in a sleeved mode, the roller supports are fixed to the roller fixing base, the tapped foot is arranged on the roller fixing base through a lens part and a cushion block in a press fitting mode, and the lens part is fixed to the cushion block. The moon phase displaying mechanism has the advantages that due to the fact that the optical refraction principle of lenses is applied to the movement of the wrist watch, the change of a moon waxing and waning image is made identical with the change of a true moon waxing and waning image; in addition, due to the fact that the displaying mechanism is modular, the moon phase displaying mechanism can be suitable for any basic movements simply by changing transmission of the movement and the fixing form of the movement base plate; particularly, faults can be handled conveniently and rapidly, and the moon phase displaying mechanism is suitable for both wrist watches and clocks.

Description

technical field [0001] The invention relates to a display mechanism of a watch moon phase, in particular to a display mechanism of a watch real moon phase. Background technique [0002] figure 1 It is an aerial image map of the real moon phase profit and loss in the sky. In the existing mechanical watch with additional movement of moon phase, the structure of displaying the moon phase is driven by a 59-tooth moon phase wheel to drive a moon phase disc printed with two moon patterns separated by 180°, and a toggle head One tooth of the moon phase wheel is dialed in 24 hours, and the moon phase changes are displayed through the dial window for about two lunar months. This moon phase display structure is characterized by a simple structure, but the displayed moon phase effect is different from the real moon phase image in the sky, and only shows the change of the moon phase profit and loss more vividly. [0003] US Patent No. 508467 discloses a disc with two images of full m...

AI Technical Summary

Problems solved by technology

The image of the moon phase displayed by this structure is limited by the viewing angle. If the viewer does not view the dial vertically but at a certain angle from the side, the image of the moon phase displayed by the sphere will have a large error.

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