JPH0233277Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a bell-ringing mechanism used in alarm clocks and the like.

(Prior art) In the conventional clock striking mechanism, a striking ball that can be displaced by centrifugal force is loosely fitted into a bell ring fixed to a rotating shaft, and as the ring rotates, the striking ball is struck by a ring of phosphorus or the like. The sounding body was struck continuously.

(Problems to be Solved by the Invention) However, the conventional bell striking mechanism described above has a drawback in that the mechanism can only produce a certain continuous sound.

The present invention has been made to solve the above-mentioned conventional drawbacks, and its purpose is to provide a bell-strike mechanism that can easily change the bell-strike sound.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, a ball that can be displaced by centrifugal force is loosely fitted into a shaft provided on a rotating shaft, and the shaft is rotated. In a bell striking device that continuously strikes a sounding body such as a ring, a shaft mounting plate such as an elliptical plate is fixed to the rotating shaft,
A shaft having a movable hitting ball support portion for loosely fitting a hitting ball is rotatably fitted to the rotating shaft, and one end is rotatably fitted to the shaft mounting plate,
A support rod is provided, the other end of which is engaged with the ball support part, and by rotating the rotating shaft either to the right or to the left, the sound of the striking bell can be varied.

(Example) An example of the present invention will be described below based on the drawings.
FIG. 1 is a sectional view of an embodiment of the present invention, and FIGS. 2 and 3 are explanatory diagrams of the operation of the bell-striking mechanism shown in FIG. 1 when viewed from above.

As shown in FIG. 1, the elliptical plate 2 is fixed to a rotating shaft 6, and the shimoku 4 is rotatably supported by the rotating shaft 6. The support portion 10a of the support rod 10 is rotatably supported by a hole 2a provided in the elliptical plate 2, and the hitting ball 8 is supported by the hitting ball support portion 12 integrally formed with the support rod 10. The ring 16 is mounted with some play in a position where it can be struck. In addition, the lock 4 has an engaging portion 10b provided on the support rod 10.
A through hole 14 is provided which has engaging surfaces 14a and 14b that can be inserted and moved and that engages with the engaging portion 10b.

The embodiment of the present invention has the above configuration,
Next, its operation will be explained.

As shown in FIG. 2, as the rotating shaft 6 rotates in the direction of arrow A, the elliptical plate 2 rotates in the direction of arrow A, and the support rod 10 is pulled in the direction of arrow B. Then, the engaging portion 10b provided on the support rod 10 engages with the inner engaging surface 14a of the through hole 14, and the shaft 4, the ball support portion 12, and the ball 8 rotate in the direction of arrow A.

As shown in FIG. 3, as the rotating shaft 6 rotates in the direction of arrow C, the elliptical plate 2 rotates in the direction of arrow C, and the support rod 10 is pushed in the direction of arrow D. Then, the engaging portion 10b engages with the outer engaging surface 14b of the through hole 14, and the shaft 4, the ball support portion 12, and the ball 8 are engaged with each other.
rotates in the direction of arrow C.

As shown in FIG. 2, when the rotating shaft 6 rotates in the direction of the arrow A, the impact between the striking ball 8 and the ring 16 is small, so a small striking sound is generated, whereas the third
As shown in the figure, when the rotating shaft 6 rotates in the direction of the arrow C, the impact between the hitting ball 8 and the ring 16 is large, so a loud hitting sound can be generated.

(Effects of the invention) According to the invention, it is possible to provide a bell-striking mechanism that can produce bell-striking sounds with different tones by switching the rotation of the rotating shaft between rightward and leftward directions.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention. Second
3 to 3 are explanatory diagrams of the operation of the bell-striking mechanism shown in FIG. 1. 2...Elliptical plate, 4...Shaft, 6... Rotating shaft, 8... Hitting ball, 10... Support rod, 12... Hitting ball support portion.

Claims (1)

[Scope of utility model registration request] In a bell-striking device that continuously strikes a sounding body such as a ring by rotating a rotating shaft, there is a pivot plate such as an elliptical plate fixed to the rotating shaft, and a support part whose one end is rotatably supported by the pivot plate. and a support rod having a ball support portion on the other end into which a ball is loosely fitted, and an engaging portion provided on the support rod that is rotatably supported by the rotating shaft and movably fitted into the support rod. The inner diameter of the through hole is set to be shorter than the distance from the rotating shaft to the support part of the support rod, and the engaging part is formed in the through hole depending on the rotational direction of the rotating shaft. A striking mechanism for a watch, characterized in that the striking ball is moved within the ring to change the position of the striking ball support with respect to the bell.