JPH023594Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a complete storage device, specifically, a complete storage device suitable for use in a music box.

As a full storage device, a synthetic resin cover and
There is one that is combined with a metal frame to form a full storage room. In this case, the whole body is rolled into the whole body storage chamber through the whole body winding window hole formed by a notch provided in one or both of the opposing parts of the cover and the frame. Then, the end of the full length is locked to one side of the window hole. Making part of the Zenmai storage room made of synthetic resin has the advantage of reducing the number of parts in the music box, but on the other hand,
The problem is that it is inferior in strength compared to metal.

If the gear for transmitting torque to the governor breaks while the Zenmai is fully wound, the Zenmai suddenly unwinds and expands, colliding violently with the inner circumferential wall of the Zenmai storage chamber. At this time, the side wall of the Zenmai storage room may be damaged, and there is a risk of injury from the Zenmai that fly out. This damage to the side wall is likely to occur in the portion that locks the end of the full swing, that is, in the vicinity of the full swing winding window hole, and particularly in the portion facing the full swing locking portion. The area near the window hole cannot be reinforced due to the design, so it is the weakest area in terms of strength.

The object of this invention is to provide a complete storage device that prevents damage to the storage chamber when the storage chamber is formed of a synthetic resin cover and a metal frame.

In this invention, the inner periphery of the frame is fixed on the inner circumferential surface of the cover and the frame, which are located on the other side of the window hole for full winding that locks the full end on one side. It is characterized by having the mask completely deviated towards the dance side. According to the present invention, even if the full movement suddenly expands, this full movement will collide with the inner circumferential surface of the frame that is deflected towards the full movement.
This has the effect of preventing damage to the synthetic resin cover and preventing accidents caused by so-called Zenmai bursting.

Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

FIG. 1 is an exploded perspective view showing the frame and cover of a music box to which the present invention is applied. The frame 1 is made of metal, for example a zinc alloy. The cover 2 is made of synthetic resin. The frame 1 includes a fixing part 3 for fixing the diaphragm, a bearing 4 for supporting the drum, jetties 7, 8, 9, and 10 for supporting the gear train of the governor mechanism, and supporting one shaft end of the brake member. The jetty 11, which engages with the engaging parts 12, 13, 14 formed on the cover 2, and the caulking parts 15, 16, 17 which fix the same, constitute a part of the full storage chamber. a partially cylindrical peripheral wall 18;
A hole 19 into which a full winding shaft is inserted is formed respectively. The cover 2 is provided with a peripheral wall 20 that faces the peripheral wall 18 . Cover 2 has
An annular friction portion 21 with which the brake member of the governor mechanism contacts, and a shaft hole 2 that supports the other shaft end of the brake member.
2 are formed respectively. In Figure 1,
Components of the music box, such as a diaphragm, drum, governor mechanism, and full-length dancer, are omitted for convenience of illustration. The above-mentioned music box components are attached to the frame 1 by automatic assembly, attachment of the cover 2, and caulking.

The peripheral wall 18 of the frame 1 has a partially cylindrical shape extending from the caulked portion 15 to the caulked portion 17, and a cutout portion 23 is formed near the caulked portion 15. This peripheral wall 18 forms the lower part of the entire storage chamber, but as shown in FIG. It indirectly constitutes A. The shaft hole 19 is located at the bottom 25 of the storage chamber A.
The bottom portion 25 is formed with guide portions 25a, 25b, and 25c for reducing friction between the first gear 26 (see FIG. 4) and the bottom portion 25.

On the other hand, a notch 27 is formed in the peripheral wall 20 of the cover 2 . This peripheral wall 20 is a flat wall 28
and the ceiling part 29 form the upper part of the full storage room A. In the ceiling part 29, there is a shaft hole 31 that supports the shaft of the first gear 26, that is, one end of the Zenmai winding shaft 30.
is formed. A first gear 26 is attached to the shaft 30 via a ratchet mechanism. hole 1
9 and the shaft hole 31 are formed so as to be offset from the center of the whole roll storage chamber A, as shown in FIG.

Frame 1 and cover 2 have caulked parts 15 to 17
and the engaging portions 12 to 14 are engaged with each other to be fixed. At this time, the peripheral wall 18 and the peripheral wall 20
The mutually facing portions 18a, 20a of the two abut against each other as shown in FIG. At this time, the notch 23 and the notch 27 form a window hole B for full winding. A step part is formed on one side of the window hole B, and a locking part 33 locks the end part 32a of the rolled-up part 32.
It is becoming. In the illustrated embodiment, the window hole B is
Since it is formed by the opposing parts of the frame 1 and the cover 2, the locking part 33 consists of a step part 23a and a step part 27a of each notch part.

When the frame 1 and the cover 2 are integrated, the inner peripheral surfaces 18A and 20A of the peripheral wall 18 and the peripheral wall 20 facing the locking part 33 of the full winding window hole B are 4 are positioned relative to each other as shown in FIG. That is, the outer circumferential surfaces of both circumferential walls are positioned flush with each other, but the inner circumferential surfaces 18A, 20A of each are offset by the gap g. In this case, it is important that the inner circumferential surface 18A is deviated toward the full length 32. In other words, the inner circumferential surface 20A of the synthetic resin cover 2 is placed at a position farther away from the full length 32 by the gap g than the inner circumferential surface 18A.

Therefore, as shown in FIG. 4, when the Zenmai 32 is expanded in the Zenmai storage room A, the outermost portion 32A comes into contact with the Zenmai winding window hole B. This is the inner peripheral surface 18A of the peripheral wall 18 of the opposing metal frame. Even if the whole dance expands rapidly,
Since the peripheral wall 18 having sufficient strength receives this, the peripheral wall 20 of the cover will not be damaged.
The higher the height h (see FIG. 4) of the peripheral wall 18,
Further, the thicker the frame, the more effective it is against full impact force, but increasing the height of the frame peripheral wall increases the occurrence of troubles during frame casting.
Therefore, the peripheral wall 18 takes into account the amount of twist in the length direction of the full length 32, and even if the full length is twisted by the maximum amount during expansion,
The height h and the amount of contact with the full length 32 (in FIG. 4, approximately 1/3 of the width of the full length 32) are selected so as not to contact the inner circumferential wall 20A.

Further, as shown in FIG. 2, when the frame 1 and the cover 2 are integrated, the cover 2 is reinforced by the frame 1.

That is, the planar wall 28 of the cover 2 in the illustrated embodiment is located further inward of the entire storage chamber A than the reinforcements 8a and 24 and faces the frame, as shown in FIG. Therefore, even if the full range expands and pushes against the flat wall 28, the wall 28 is backed up by the reinforcements 8a, 24 and a part of the jetty 8, so problems such as deformation and damage are prevented. Ru.

Further, when the cover 2 and the frame 1 are integrated, a portion 20b of one end edge of the cover is located inside the stepped portion 18b of the frame peripheral wall, thereby backing up the strength of the cover peripheral wall. in this way,
Due to the presence of the step portion 18b and the reinforcements 8a and 24, there is no need to worry about the strength of the synthetic resin cover, and the occurrence of creep deformation is prevented. Of course,
In the present invention, the inner peripheral surface 18A of the peripheral wall receives the entire outermost peripheral portion 32A, so it does not have the structure of the stepped portion 18b and the part 20b, and the frame peripheral wall and the end surface of the cover are simply brought into contact. There is no problem.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a full storage device showing an embodiment of the present invention, Fig. 2 is a front view of the full storage device,
FIG. 3 is a plan view of the main part of the frame, and FIG. 4 is a longitudinal sectional view of the entire storage chamber. 1...Frame, 2...Cover, 18, 20...
...Peripheral wall, 18a, 20a...Opposing part, 18A, 2
0A...Inner peripheral surface, 30... Zenmai winding upper shaft, 32...
Full dance, 33...locking part.

Claims (1)

[Scope of utility model registration request] A cover made of synthetic resin and a frame made of metal form a full storage chamber, and a window hole for full storage is formed by a notch provided in one or both of the facing parts of the cover and the frame, In a full-length storage device that has a locking part on one side of the window hole that locks the end of the full-length frame, the inner circumferential surface of the frame located on the other side of the window hole is inside the cover. A full-length storage device characterized by being deviated toward the full-length side from the circumferential surface and receiving the expanded full-length on the inner circumferential surface of the frame.