JPS58181089A - Governor mechanism for music box - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a speed regulating mechanism for a music box.

The speed-governing mechanism of a music box consists of a speed-governing gear train that rotates as a barrel-like drive source, and a worm shaft located at the end of this gear train. The worm shaft, which rotates at high speed, is provided with a rotating body such as a flight blade, which contributes to constant speed rotation of the drum.

By the way, in order to stop the sound of a music box, it is common to engage a stopper member with the flight blade of a worm shaft rotating at high speed to stop the rotation. Furthermore, in this case, the stopper member enters into the rotation locus of the flight blade from the axial direction or radial direction of the worm shaft.
Is it as rigid as the rigid wind jino feather? When the parts of the funeral structure are engaged, the stones interfere with each other and damage the parts, which can cause problems. In other words, if the tip of the stopper member or the wind blade Q] ends up colliding with each other, and if you do not push the stopper part further in that state, the stopper member or the wind blade (my father used a 1m worm) This causes the problem that the sheet is bent.

The present invention has been made in view of the above-mentioned drawbacks, and includes:
:An object of the present invention is to provide a speed regulating mechanism that prevents damage to a stopper member and a rotating body when a music box stops playing.

The object of the present invention is to provide a worm shaft that is rotatably driven;
a braking member fixedly arranged on one end side of the worm shaft;
It is fixed to the worm shaft, and when the shaft rotates, the seaweed part is bent in the axial direction from the inflexible region to the flexible region,
This is achieved by Ergault's speed regulating mechanism, which is characterized by comprising a rotating body that comes into sliding contact with the braking member, and a stopper member that is movable forward and backward with respect to at least the deflection region of the weight portion.

According to the invention, the weight part of the rotating body can be read between the reading area and the non-flexible area, and the strike member 275 can be moved to the flexible area and fixed to the weight part. Even if I try.

Because the old 1st incarnation reads and escapes, problems such as breakage of introspection do not occur. Furthermore, if the rotation body is made of an elastic body made of a com or a com-like product, it is possible to reduce the so-called noise level, which is the impact sound made by the stopper member when the music box stops playing.

Hereinafter, the present invention will be explained in detail using Example 1 shown in the drawings.

In Fig. A'1, reference numeral 1 indicates a box for a toy or jewelry box, etc., and a lid 2 is attached to the box 1 so that it can be opened and closed. In the box body 1, there is a music box with a fixed tongue.
For convenience of illustration, only a part of the speed regulating mechanism is shown. A bearing portion 3a is formed in the frame 3 of the movement to receive one end of the arm shaft 4 located at the terminal of the speed-governing gear train σ). The other end of the worm shaft 4 is supported on a member 5 that is substantially integral with the frame 3.

The braking member 5 has a one-circular braking portion 5a.

A rotating body 6 made of an elastic material such as a product similar to Combata&l rubber is press-fitted into the worm $1t14. Rotating body 6
consists of a boss part 6a that is press-fitted into the worm @4, and a weight part 6c that is connected to this boss part by a connecting part 6b. The worm [lI[lI4] is rotationally driven by a governor gear train that is rotated by all the weights of a barrel (not shown). In addition, in 1g1, the code|symbol 7 has shown the winding key which winds up all the weights which are not shown.

On the other hand, a stopper member 8 bent into an L shape is attached to the side wall of the box 1 so as to be movable up and down. The stopper member 8 is provided with an upward force of + in Fig. 1 by a barb 9.
811 habits are given. One end 8a &'J of the stopper member 8σ) is positioned so as to be able to come into contact with a part of the lid body 2. The other end 8b of the stopper member 8 is connected to the rotating body 6
It is positioned so that it can be engaged with.

Details of this position will be described later.

Then, as shown by the chain line, when the lid body 2 is open, the stopper member 8, as shown by the chain line,
It protrudes upward due to the elasticity of the spring 9. At this time,
The other end 8b of the stopper member 8 is retracted to a position where it does not engage with the rotating body 6.

When all the weights (not shown) are being charged and the stopper member 8 is displaced to the position b shown by the chain line, the worm qII4
starts rotating. When the worm shaft begins to rotate at high speed, the connecting portion 6b of the rotating body 6 is bent, and the weight portion 6c is displaced in the axial direction by the action of centrifugal force. As shown by the chain line, the rotating body 6, which is deflected in the axial direction by rotating at high speed, has a weight part 6.
c The upper surface of the braking member 50 is the annular braking portion 5a f
Due to the rubbing, the rotational speed cannot be kept within a certain range due to the braking action. By kneading, a drum body (not shown) is rotated at a predetermined speed to maintain a predetermined playing speed.

Now, as shown by the solid line in Figure 1, the rotating body 6 is σ)
IL! When one rotation is stopped, it is positioned without bending at a position where it is not subjected to centrifugal force. The virtual rotation trajectory of the rotating body 6 in this state? It is called the Castle of Absurdity. And as shown by the chain line in Figure 1, when the (b) rolling body 6 rotates again, what is the centrifugal force? In response to this, it is bent toward the braking member 5. The rotation locus of the rotating body 6 in this state is referred to as a deflection region.

The retracted position of the stopper member 8 is a position where one end 8b of the stopper member 8 is retracted not only from the above-mentioned non-flexible region but also from the flexible region. and,
When the lid body 2 fails to close, the stopper member 8, which had been moved to the retracted position shown by the chain line, cannot be moved to the stop position shown by the solid line.
In the case of example M, the overlapping portion A1 of the non-flexible region and the flexible region cannot be moved at the turn indicated by the arrow a in J□21z1.

Therefore, in FIGS. 3 and 2, the rotating body 6, which was rotating due to the bending injury indicated by the chain line, enters its rotation locus and is stopped by engaging with the flange stopper member.

When the stopper member 8 is moved to the stop position in the direction of arrow a, one end 8b thereof may abut against the upper surface of the weight portion 6c. The so-called stopper member and the rotating body may interfere with each other. Traditionally, when such a tax phenomenon arises,
This resulted in damage to the Stonopa member and/or the unit.

However, in the present invention, since the rotor 6 is made of an elastic body, even if there is interference as described above, the rotation rod can be bent by the connection m6b and escape downward, so that the interference can be avoided. The weight part and the stopper member do not engage with each other, but the next rotated weight part and the stopper member engage with each other to stop the worm shaft. In the illustrated embodiment, two weight portions 6c are provided, so if one of the two weight portions interferes, the two-arm axis will move 180°l! -+11 times later, the other weight portion is engaged with the stopper member.

The stopper member σ) can enter the deflection area only in the direction of the arrow a shown in Figure 2, and of course it cannot be considered in any other direction including the direction of the arrow. and.

For example, if the stopper member enters the deflection area as indicated by the arrow, even if the stiffness interferes with the weight part 6c,
As the connecting portion 6b bends, this weight portion escapes, so that mismatching due to interference as in the conventional case does not occur.

In addition, according to the speed control and structure of the present invention, the one rotating body 6 is the bullet I body.
Due to this formation, impact noise due to engagement between the stopper member and the rotating body is reduced as much as possible not only during the above-mentioned interference but also when there is no interference.

In the above description, when the lid body 2 is closed, the stopper member 8σ] is positioned at one end sb7, at a portion where the non-flexible region and the deflectable region of the rotating body 6 overlap (see symbol A), and rotates the worm shaft. #i: 'ir' was stopped, but in the present invention, when the lid body is closed, it is not necessary to place the one end 8b on the above-mentioned superimposed part A, but it is necessary to place the end 8b on the flexed position. Enough.

Figure 3 shows the stopper member 80 when it enters the deflection area.
This shows the positional relationship between the weight portion 60c and the weight portion 60c.

The stopper member 80 is at the retracted position indicated by the chain, and when the lid is closed, for example, it moves to the solid line position shown in Figure 3, and also moves to the weight portion 60c. The stopper member 80 is given a movement direction 1 toward the retracted position. The magnitude of this behavior is set to be smaller than the magnitude of the return force when the rotating body 60 is no longer affected by centrifugal force and elastically returns to the inflexible region.

In addition, as shown in Fig. 5, the weight part 60c has
A collar portion 60d is formed. Therefore, as shown in Fig. 3, the stopper member 80 engaged with the weight portion 60cK in the deflection region remains locked to the collar m60d due to the elasticity of the rotating body 60 which elastically returns to the non-deflection region.

It is moved as shown in 3.4.1. In Figure 4, the @ line 80A indicates the position of the stopper member 80 that has entered the deflection area for reference.

As described above, the stopper member 80 may be forcibly entered only into the deflection area of the rotary body, and thereafter may be moved to follow the movement of the rotary body.

Figures 1 and 4 show the worm shaft 2 in a stopped state.To release the stiffness, for example, the mass () 1
When the lid body is opened, the stopper member 80 moves the rotating body to the retracted position (see the chain line position tilr in Figure 3).
Make sure that rice is brought to you. Then, when the blood is closed, it moves from the chain line position in Figure 3 to the solid line position.

This implementation? In this case, it is of course possible to expect the effects of the example described in HJ and colleagues regarding the above-mentioned interference and valence monotone at the time of stopping.

In addition, in the above explanation σ), the lid body 2 was mentioned as a means for moving the stopper member 2 to JI, but it is obvious to those skilled in the art that something other than the lid body can be used as the means.

[Brief explanation of drawings]

Figure 1 shows a comparative example of an embodiment of the present invention.
Figure 2 is an enlarged front view of the thigh part of the same as above, Figure 3 is a main front view showing another embodiment of the present invention, Figures A and 4 are the same as above.
The figure is a perspective view showing an example of a weight section. 4... Worm shaft, 5... Braking member, 6.60...
・Rotating body, 6c, 60c... Weight part, 8
．． 80...Stopper member.

Claims (1)

[Claims] (1) A worm shaft that is rotationally driven, a braking member that is fixedly disposed on one end of the worm shaft, and a braking member that is fixed to the worm shaft and whose weight portion is deflected from an unflexible region by rotation of the shaft. a rotating body that deflects in the axial direction toward the area and slides into contact with the braking member; A speed regulating mechanism for a tossable music box, comprising a stopper member that can move forward and backward with respect to at least a deflection region of the weight portion. (2+ The procurement mechanism of the music box according to claim 1, characterized in that the stopper member is movably housed in the weight section from the reading area to the non-flexible area. (3) A speed regulating mechanism for a music box according to claim 11 or claim 2, wherein the rotating body is formed of an elastic body made of rubber or a rubber-like material.