JPS5921433Y2 - bell striking device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bell striking device used for watches and the like.

Conventionally, in this type of bell striking device, a ring-shaped hitting ball is press-fitted into both ends of the shumoku, but since the shumoku and the hitting ball are separate members, there are many parts, and it is difficult to manufacture these parts.・There was a drawback that assembly was time consuming.

In addition, the applicant of the present application previously proposed a rotary shamoku consisting of an arcuate arm and a ball integrally formed at the tip of this arm.

However, the axis of rotation of this arm rotates at a high speed above a certain level, and only the centrifugal force caused by this causes the arm to expand outward and allow the ball to hit Rin. The blows were strong and hard, the sound quality was poor, and it was difficult to improve this.

An object of the present invention is to provide a bell striking device which has a simple structure by integrally molding a schmoku and a striking ball, and which can be manufactured and assembled easily by reducing the number of parts.

The feature of the present invention is that a schmoku with a hitting ball at both ends is integrally molded from a metal or hard plastic member, and this shimoku is provided with an elongated shaft hole in the direction of the hitting ball, and this shaft hole is provided with a shaft hole for the shamoku. A small-diameter shaft portion with a non-circular cross section is inserted into the shaft for rotating the shaft, and the shaft can be moved linearly by rotation of the shaft.

The present invention will be described in detail below based on embodiments shown in the drawings.

In FIGS. 1 and 2, numeral 1 denotes a shimoku, which is made of a wire made of, for example, brass, iron or other metal, or a hard plastic material.

As shown in FIG. 2, balls 2 and 3 made of wire rods are integrally formed on the outside of both constricted ends of the shimoku 1.

As a result, the shaft hole 4 in the shape of an elongated hole is provided in the schmook 1 in the direction of the balls 2 and 3.

The shmoku 1 configured as described above has the rotating shaft 6 of the motor 5.
is supported by.

The rotating shaft 6 has cutting surfaces 7a, 7a as shown in Fig. 2.3.
A small diameter shaft portion 7 having a non-circular cross section is provided.

The small diameter shaft portion 7 having a non-circular cross section is formed such that the width of the shaft hole portion 4 is larger than the minimum width of the small diameter shaft portion 7, that is, the width of the cutting surfaces 7a, 7a.

The shaft hole 4 of the schmook 1 is inserted into the small diameter shaft 7.

Therefore, the shaft 1 is rotationally driven by the rotation of the rotating shaft 6, and the shaft 1 moves linearly in the elongated shaft hole 4 with respect to the rotating shaft 6 by centrifugal force.

In this embodiment, the tip 8 of the rotary shaft 6 is formed into a conical shape, and the tip 8 is press-fitted into the shaft hole 4 of the shank to attach the schmoku 1 to the small diameter shaft 7. However, in this case, the material of the shamoku 1 must be made of an elastic member.

Other methods for attaching the shmoku 1 include screwing the tip 8 of the rotating shaft 6 into the shaft 7, or attaching an E-ring to the tip of the rotating shaft to support the shmoku irremovably. Good too.

A mounting plate 9 is attached to the motor 5, and a bowl-shaped ring 10 is attached to the tip of the mounting plate.

The balls 2 and 3 of the Schmoku 1 can hit the outer surface of the phosphorus 10.

Next, the operation will be explained. When the motor 5 is started, the schmook 1 rotates together with the rotary shaft 6, and due to this rotation, the balls 2 and 3 at both ends of the schmook alternately hit the ring 10.

That is, at the moment when one of the balls 2 hits the ring 10, the shaft hole 4 of the ball 2 receives a reaction force from the impact and moves along the small diameter shaft 7, so that the hammer 1 moves backward.

At this time, the other hit ball 3 protrudes conversely. When the ball 3 next hits the phosphorus 10, it retreats together with the shmoku 1 in the same manner as above, and this process is repeated thereafter.

Therefore, since the hitting balls 2 and 3 retreat the moment they hit the ring 10, they can be struck with a clear hitting sound.

Note that the shmoku is not limited to the above configuration; for example, as shown in FIG.
The outer shape of the balls 2a and 3a may be cut out from both ends of the ball a, and the shaft hole 4a of the shimoku may be punched out.

As described above, according to the present invention, since the long hole-shaped shaft hole is provided in the schmoku, the shimoku has good mobility in the direction of the ball when striking the bell, that is, the ball returns easily, and the sound of the shimoku is clear. Not only is it useful, but the shmoku's mobility is good, so even the centrifugal force caused by the low-speed rotation of the rotating shaft allows the shmoku to move sufficiently and hit the ring with light force and softly, resulting in extremely high sound quality. good.

Further, by integrally molding the shmoku and the hitting ball, the construction is extremely simple, the number of parts is small, manufacturing and assembly are easy, and costs can be reduced, which has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a front view of one embodiment of the present invention, Fig. 2 is a plan view of the main part, Fig. 3 is an enlarged perspective view of the rotating shaft, and Fig. 4 is a plan view showing another embodiment of the shmoku. . 1.1a...Shmoku, 2,2 a, 3,3
a... Hitting ball, 4, 4a... Shaft hole, 6
... Rotating shaft, 7 ... Small diameter shaft part, 10.
·····Rin.

Claims (1)

[Scope of utility model registration request] The shamoku and the hitting balls located at both ends thereof are integrally molded from metal or hard plastic members, and the shimoku is provided with an elongated shaft hole in the direction of the hitting ball, and the shimoku is rotated in this shaft hole. A small-diameter shaft with a non-circular cross section is inserted into the rotating shaft, and the width of the shaft hole is set slightly larger than the minimum width of the small-diameter shaft, and the shaft moves linearly by rotation of the rotating shaft. A bell striking device characterized by being able to strike a bell.