JPH0442879Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an instant rotation device with a music box that instantly opens the lid of a box.

[Prior art]

The present applicant proposed a music box with an instantaneous rotation mechanism that instantly opens the lid of a box, etc. in Utility Model Application Publication No. 59-15096, but this proposal uses a coil spring that stores energy inside the music box. Since it is built-in, it has the disadvantage that mass-produced music boxes cannot be used, and the locking of the lid requires a claw that is rotatably supported on the circumference of the rotary plate and is biased by a spring. The system is such that the spring force is regulated at the stopper, and when sufficient spring force has been accumulated, the spring force is regulated by the stopper and the lock lever is released at that time, so the spring can be fixed to the drum of the music box, The music box itself had a ratchet etc. attached to it, which had the disadvantage of making the structure complicated. Furthermore, the timing of the operation of the binding box coincides with the drum position, and the lid always opens at the same time, which has the disadvantage that the interest in opening the lid is halved.

[Purpose of invention]

In view of the above-mentioned drawbacks, the present invention proposes an instant rotation device with a music box in which a mass-produced music box can be used and the instantaneous rotation means is provided outside the music box.

[Structure of the idea]

The present invention consists of a gear driven by the rotation of a music box, a cam facing the gear and rotationally connected to the gear via a coil spring, and a cam that is biased to move into the rotation range of the cam, and a force that exceeds the biasing force is stored. and a member that is instantaneously displaced by the rotation of the cam due to the stored force of the coil spring that can be biased.

〔Example〕

Hereinafter, the present invention will be explained with reference to an illustrated embodiment. In the instant rotation device with a music box, as shown in FIGS. 1 to 4, a side plate 2 is fixed to the outside of one side wall 1a of a box 1 with a support 10, and a frame 11 of a music box 3 is fixed to the inside thereof. A shaft portion 4a of a handle 4 is fitted into a hole in an extension of the outer wall on the music box 3 side of one side wall 1a of the box 1, and a handle shaft 12 press-fitted and fixed to the shaft portion 4a is formed on the one side wall 1a. It is rotatably supported on the shaft support 1b and is prevented from coming off by an E-ring 13. A knob 14 is rotatably provided on the handle 4. A worm 5, a spring 15, and a lever-like instantaneously displaceable member 6 are fitted into the handle shaft 12. A handle claw portion 4b is formed at one end of the shaft portion 4a, and is engaged with a worm claw portion 5a formed at one end of the worm 5, and the worm 5 is biased by a spring 15 to constitute a one-way rotation clutch. There is. The instantaneously displacing member 6 has a handle shaft 12, a fitting part 6a, and a boss part 6b formed in the center, and has a claw part 6c, a spring hook part 6d, and a projection part 6e on both sides as shown in FIGS. 2 and 5. is formed. A spring 16 is fitted around the outer periphery of the boss portion 6b, one end of which is latched onto a spring hook portion 6d, and the other end of which is placed against one side wall 1a.

On the frame 11 of the music box 3, a drum 17 is rotatably supported and a diaphragm 18 is fixed. On one side of the drum 17 is a gear 19.
is fixed, and the gear 19 is meshed with the worm 5. The gear 19 is further meshed with a gear 7 that is driven by the rotation of the gear 19. The gear 19 and the gear 7 are composed of gears having different numbers of teeth. The driven gear 7 is rotatably fitted onto the shaft 20. axis 2
0 is the shaft support 2 of the side plate 2 as shown in Figures 2 and 3.
a, 2a, and is prevented from coming off with an E ring 21. A cam 8 is further rotatably fitted onto the shaft 20. A coil spring 22 is fitted around the outer periphery of the shaft portion 7a of the gear 7 and the shaft portion 8a of the cam 8. The coil spring 22 is a spring with stronger elasticity than the spring 16, and one end is connected to the spring hook 7 of the gear 7.
b, the other ends are respectively locked to spring hooks 8b of the cam 8, and the gear 7 and the cam 8 are coupled by a coil spring 22. A cam portion 8c is formed on the cam 8, and as shown in FIG. 5, the projection 6e of the member 6, which is instantaneously displaced in the rotation range of the cam portion 8c, is urged forward by the spring 16.

On the other side of the box 1, one side shaft support 9a of the lid 9 is attached to a shaft 23.
It is rotatably provided. A hook portion 9b is formed on the other side of the lid 9, and the hook portion 6 of the member 6 is momentarily displaced.
c. The lid 9 is biased in the opening direction by a spring (not shown) or a spring such as a pop-up doll housed in the box.

The operation of the instant rotation device with music box is by knob 14.
When the handle 4 is rotated by grasping the handle 4, the worm 5 is rotated via the one-way rotation clutch, the gear 19 of the music box 3 is rotated, and the drum 17 is rotated. With this rotation, the valve of the diaphragm 18 is played by a pin provided on the drum 17, and the music box 3 is played. The driven gear 7 is further rotated, and the coil spring 22 is wound tightly, so that a torsional force is stored in the coil spring 22. When the stored force of the coil spring 22 overcomes the elasticity of the spring 16, the cam 8 is instantaneously rotated.

This instantaneous rotation of the cam 8 pushes the protrusion 6e of the member 6 into the rotation range of the cam portion 8c, causing instantaneous displacement.
is instantly pushed up. The member 6, which is instantaneously displaced by this push-up, is rotated clockwise in FIG. 2, the hook portion 9b of the lid 9 is removed from the claw portion 6c, and the lid 9 is pushed up by a spring (not shown), resulting in the operation of a tautsukuri box.

When the handle 4 is rotated in the opposite direction, the rotation is not transmitted to the worm 5 because the handle claw 4b and the worm claw 5a are not engaged.

When the instant rotation device with a music box is configured as described above, there is no need for a means for a box to attach to the music box, and mass-produced music boxes can be used, thereby reducing costs. Furthermore, the gear 7 and cam 8 that follow the rotation of the music box are connected to the coil spring 22.
Since the member 6 is coupled coaxially and is instantaneously displaced by the instantaneous rotation of the cam 8 due to the stored force of the coil spring 22, the component 6 is directly actuated, resulting in an inexpensive and simple component configuration. Furthermore, since the number of teeth of the gear 7 that follows the rotation of the gear 19 of the music box 3 is different from the number of teeth of the gear 19, the member 6 that is instantaneously displaced with the music box 3 tunes.
The timing at which the lid 9 opens when it operates does not match, and the part of the song that the lid opens differs each time.
It can attract interest as a box made from scratch.

In the above description, a music box rotated by a handle is used, but a full-length music box or a motorized music box may be used as the drive source of the instant rotation device.

Further, although the above description is made using a twitching box, it may be used as an instantaneous rotation device for other operations.

[Effect of idea]

Since the present invention is configured as described above, the music box does not require any means for an instant rotation device, and a mass-produced music box can be used, thereby reducing costs. Furthermore, the gear that follows the rotation of the music box and the cam are coaxially connected by a coil spring, and the instantaneous rotation of the cam due to the stored force of the coil spring directly operates the member that is instantly displaced, resulting in a cheap and simple component configuration. It is possible to provide an instantaneous rotating device with a music box that exhibits excellent practical effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a cross-sectional plan view of the main part of an instant rotation device with a music box, and FIG.
3 is a cross-sectional side view of the main part, FIG. 3 is a cross-sectional side view of the main part seen through the side plate, FIG. 4 is an exploded perspective view, and FIG. 5 is a side view of the cam and a member that is instantaneously displaced. 3...music box, 6...instantaneous displacement member,
7... Gears that follow the rotation of the music box, 8...
Cam, 22...Coil spring.

Claims (1)

[Scope of utility model registration request] A gear 7 that follows the rotation of the music box 3, a cam 8 facing the gear 7 and rotationally connected to the gear 7 via a coil spring 22, and a cam 8 that is urged to advance into the rotation range of the cam 8, and this advancing urging force An instantaneous rotating device with a music box comprising a member 6 that is instantaneously displaced by the rotation of the cam 8 due to the stored force of the coil spring 22 which can store the above energy.