Motion toy transmission mechanism

Amusement devices: toys – Rotating or having visible rotating portion

Reexamination Certificate

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Details

C446S265000, C084S095200, C040S411000

Reexamination Certificate

active

06386940

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates a motion toy transmission mechanism, and more particularly to such a motion toy transmission mechanism, which uses a musical box to rotate a rotary disk and ornamental items on the rotary disk.
A variety of musical box incorporated motion toys have been disclosed, and have appeared on the market. These motion toys commonly use a clockwork-driven musical box to move ornamental items. Different transmission means may be used and coupled between the output shaft of the musical box and the ornamental items, enabling the ornamental items to make a linear or circular motion. FIGS. from
1
through
4
show a motion toy of this kind. This structure of motion toy
10
comprises a transmission mechanism
11
. The transmission mechanism
11
comprises a bottom plate
13
, an annular rotary disk
12
supported on the bottom plate
13
and holding a variety of ornamental items
24
, the rotary disk
12
having a center opening
14
and an internal gear
15
around the center opening
14
, three driven gears
16
mounted on the bottom plate
13
and spaced from one another at 120° and meshed with the internal gear
15
, and a musical box holder
17
fixedly fastened to the bottom plate
13
by screws
18
to hold an ornament
19
and a musical box
20
. The musical box
20
is fixedly fastened to a chamber
26
in the musical box holder
17
by screws
25
, having a clockwork shaft
21
extended downwards. The clockwork shaft
21
is fixedly mounted with a drive gear
22
. Further, three idle gears
23
are respectively meshed between the drive gear
22
and the driven gears
16
. When the user rotates the rotary disk
12
, the driven gears
16
are turned to rotate the drive gear
22
through the idle gears
23
, thereby causing the clockwork shaft
21
to fasten up the clockwork of the musical box
20
and to preserve energy. When releasing the hand from the rotary disk
12
, the clockwork gradually releases preserved energy to the clockwork shaft
21
, thereby causing the clockwork shaft
21
to rotate. During rotary motion of the clockwork shaft
21
, the drive gear
22
is moved to rotate the rotary disk
12
through the idle gears
23
and the driven gear
16
. Because many gears
16
,
22
and
23
are used to transmit rotary driving force from the clockwork shaft
21
to the rotary disk
12
, much friction resistance is produced during the transmission of rotary driving force, thereby causing a significant loss of rotary driving force. Furthermore, it inconvenient to fasten up the clockwork of the musical box
20
. When turning the clockwork shaft
21
to fasten up the clockwork of the musical box
20
much effort should be employed to the rotary disk
12
. Because no handle means is provided for turning the clockwork shaft to fasten up the clockwork of the musical box, the consumer may not know the way to fasten up the clockwork of the musical box.
SUMMARY OF THE INVENTION
The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a motion toy transmission mechanism, which eliminates the aforesaid drawbacks. According to the present invention, the motion toy transmission mechanism comprises a bottom plate, a clockwork-driven musical box fixedly mounted on the bottom plate, the clockwork-driven musical box having a clockwork shaft downwardly extended through a hole on the bottom plate and a handle fixedly fastened to the clockwork shaft for turning by hand to fasten up the clockwork of the clockwork-driven musical box, a drive gear fixedly mounted on the output shaft of the musical box, a driven gear mounted on the bottom plate and meshed with the drive gear; a rotary disk supported on the bottom plate to hold ornamental means and rotated by the driven gear upon releasing of the clockwork of the musical box, the rotary disk having an internal gear meshed with the driven gear, and a pressure member mounted on the bottom plate and spaced around the musical box to guide rotary motion of the rotary disk.


REFERENCES:
patent: 5313727 (1994-05-01), Murray, Jr.
patent: 5986189 (1999-11-01), Yang
patent: 6038798 (2000-03-01), Liu

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