JPH1048353A - Rotary decoration - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a rotary decoration for decoration clock which can be driven with low power by reducing the frictional load while reducing the size. SOLUTION: A tubular rotary base 3 is secured to the rotary shaft 1a of a body 1 to be driven synchronously with a clock while covering a sun gear 2 arranged about the rotary shaft 1a. A rotary shaft 7 projecting from the upper plate 3a of the rotary base 3 and fixed, to one end thereof, with a decoration 6 is fixed rotatably to the upper plate 3a and a planetary gear 8 meshing the sun gear 1 is secured to the rotary shaft 7. The rotary shaft 7 is born with light friction, at the other end thereof, by a lower plate 3b through the magnetic repellence between a magnet 12 secured to the planetary gear 8 and a magnet 13 secured to the lower plate 3b. The planetary gear 8 spins while revolving about the sun gear 2 when the sun gear 2 turns. The rotary shaft 7 fixed with the decoration 6 turns smoothly under a state of low frictional load spins the decoration 6 smoothly while revolving with low power consumption on the upper plate 3a of the rotary base 3 so that a decoration clock exhibits a unique decoration effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decoration device for a decorative timepiece that rotates a decorative body to give a visual decorative feeling.

[0002]

2. Description of the Related Art Rotating a decorative body to obtain a decorative effect is applied to a figurine or a toy. The decorative body is rotated in synchronization with the driving of a clock, and a visual decorative feeling is provided to the timekeeping operation of the clock. Decorative clocks that give ”are also in practical use.

[0003] With regard to this type of decorative watch, see Japanese Utility Model Application Laid-open No.
JP-A-46496 discloses a rotating shaft that is provided with a radial projection on a peripheral side of a rotating body that is rotated by a driving device, and a movable shaft to which a decorative body is attached is rotatably disposed. There is disclosed a rotary decoration device of a decorative timepiece in which a plate pin is erected along a movement trajectory, a rotating body is rotated, and a radial projection is moved by the plate pin, thereby rotating a moving shaft to rotate a decorative body. I have.

In Japanese Utility Model Application Laid-Open No. 53-94799, a shaft rod having a toy member attached to one end is rotatably mounted on a rotating plate, and a rotor is attached to the other end of the shaft rod.
The outer track rod and the inner track rod alternately move the shaft rod along a track slope that forms a slope in the opposite direction, and the rotor is engaged with the outer track rod and the inner track rod and rotated to rotate. A rotating toy that revolves while rotating around a rotating plate is disclosed.

[0005]

Problems to be Solved by the Invention
In the decorative timepiece disclosed in Japanese Patent No. 6496, the decorative body is rotated by rotation of the rotation transmitting wheel by friction transmission between the rotation transmitting wheel and the plate pin, and the rotating toy disclosed in Japanese Utility Model Laid-Open No. 53-94799 is disclosed. In the above, the toy body is rotated by rotation of the rotor by friction transmission between the rotor and the outer or inner track rod. However, Japanese Utility Model Showa 61-46496
No. 53-53, a rotary decoration device for a decorative timepiece disclosed in Japanese Patent Publication No.
In any of the rotating toys disclosed in Japanese Patent No. 94799,
The friction load of the rotation transmission wheel or the rotor is large, the friction transmission efficiency is low, the power consumption for driving is increased, and the space for accommodating the battery needs to be wide, which is disadvantageous in terms of miniaturization of the device.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a rotary decoration device which can reduce a friction load, can be driven with low power, and can be reduced in size.

[0007]

In order to achieve the above object, the present invention provides a rotary decoration device comprising: a sun gear; a turntable attached to a rotary shaft so as to cover the sun gear; At least one decoration which is rotatably and axially movably attached to the plate, a decorative body is attached to one end protruding from the upper plate, and the other end is rotatably held by the lower plate of the turntable. A rotating shaft, a planetary gear fixed to the decorative rotating shaft located between the upper plate and the lower plate, and the rotating force of the rotary table is transmitted via a sun gear, and the other end of the decorative rotating shaft. And a friction alleviating means for alleviating a frictional force with the lower plate of the turntable.

Further, in the present invention, the above-mentioned friction reducing means includes:
Magnets are provided on the decorative rotary shaft and the lower plate of the rotary table, respectively, and generate a magnetic repulsive force to float the other end of the decorative rotary shaft from the lower plate.

Further, in the present invention, the above-mentioned friction reducing means includes:
It is composed of a pointed end at the other end of the ornamental rotary shaft and a recess formed in the lower plate of the turntable that holds the pointed end.

In the present invention, the planetary gear is meshed with the sun gear directly or via an intermediate gear.

Further, in the present invention, the above-mentioned friction reducing means includes:
The planetary gear is housed in a cavity formed on the surface of the planet gear facing the lower plate.

According to the present invention, the rotation of the turntable by the rotation shaft causes the planetary gear meshing with the sun gear to revolve around the sun gear while revolving around the sun gear, and has a decorative body attached to one end. The rotating shaft rotates smoothly under a low frictional load state by means of friction reducing means provided between the other end of the decorative rotating shaft and the lower plate of the rotating base. Thereby, the decorative body rotates on the upper plate of the turntable while smoothly revolving with low power consumption.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment of a rotary decoration device for a decorative timepiece according to the present invention will be described with reference to FIGS. FIG. 1 shows the first
FIG. 2 is a cross-sectional explanatory view showing the configuration of the present embodiment, and FIG. 2 is a plan view showing the configuration of the present embodiment.

In the first embodiment, as shown in FIG. 1, for example, a sun gear 2 is disposed around a rotation shaft 1a of a driving body 1 driven in synchronization with a timepiece, and the rotation shaft 1a A cylindrical turntable 3 is fixed so as to cover the sun gear 2. In the upper plate 3a of the cylindrical turntable 3, through-holes 5 are formed at three locations on the same circumference, and the decorative body 6 is fixed to these through-holes 5 at the protruding ends from the upper plate 3a. A decorative rotating shaft 7 is provided so as to be rotatable around an axis and movable in the axial direction. A planetary gear 8 meshing with the sun gear 2 is fixed to the decoration rotation shaft 7 in the cylindrical rotation table 3, and the lower end of the decoration rotation shaft 7 is formed on the lower plate 3 b of the cylindrical rotation table 3. It is arranged facing the formed through hole 10.

In this embodiment, a recess 14 is formed on the surface of the planetary gear 8 facing the lower plate 3b.
On the bottom surface of the concave portion 14, the magnet 12
Is fixed, and a magnet 13 is fixed around the through hole 10 of the lower plate 3b of the cylindrical turntable 3. The magnet 12 and the magnet 13 are selected so as to have the same polarity and generate a magnetic repulsive force mutually. I have.

Next, the operation of the above configuration will be described. When the clock section is driven, for example, the driving body 1 is driven in synchronization with the clock section, and the rotating shaft 1a is rotated at a speed obtained by multiplying the revolution speed in the θ direction (clockwise direction) in FIGS. Then, the cylindrical turntable 3 starts rotating clockwise.
With the rotation of the cylindrical turntable 3, the decorative rotary shaft 7 rotatably attached to the upper plate 3 a of the cylindrical turntable 3.
Are revolved around a predetermined circumference together with the cylindrical turntable 3, and the planetary gear 8 fixed to the decorative rotary shaft 7 by the revolving motion.
Meshes with the sun gear 1 and rotates in the ψ direction (counterclockwise) in FIGS. 1 and 2. Thereby, the decoration rotation shaft 7
The decorative body 6 fixed to the protruding end of the watch rotates counterclockwise, giving a visual decorative feeling to the timekeeping operation of the watch.

In this case, in the first embodiment, the magnet 1
Since the magnetic repulsive force acts between 2 and 13, the decorative rotating shaft 7 to which the planetary gear 8 is fixed receives a force in a direction away from the lower plate 3b of the cylindrical turntable 3, and the planetary gear 8 is fixed. The frictional load at the bearing portion of the decorative rotary shaft 7 with respect to the lower plate 3b of the cylindrical turntable 3 is reduced. For this reason, the planetary gear 8 rotates smoothly with a small frictional load, and the rotational force required for the rotating shaft 1a of the driving body 1 decreases.

As described above, according to the first embodiment, the magnetic repulsive force of the magnets 12 and 13 causes the bearing portion of the decorative rotary shaft 7 to be in contact with the lower plate 3b of the cylindrical rotary table 3. The frictional load is greatly reduced, the decorative rotating shaft 7 to which the decorative body 6 is attached can be rotated with low rotational force, the power consumption of the driving motor of the driving body 1 is reduced, and the space for accommodating the battery is reduced. Thus, the entire device can be reduced in size.
In addition, since the recess 14 formed in the planetary gear 8 accommodates a magnet as friction reducing means, the thickness can be reduced.

Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is an explanatory cross-sectional view showing a configuration of a main part of a rotary decoration device of a decorative timepiece according to the second embodiment, and FIG.
It is explanatory drawing which shows the structure of the bearing part of the decoration rotation shaft.

In the second embodiment, as shown in FIG. 3, a cylindrical rotary table 3 is used instead of the bearings of the magnets 12 and 13 in the first embodiment already described with reference to FIG. A receiving stone 20 is inserted and fixed in the through hole 10 formed in the lower plate 3b, and a concave portion 20a is formed in the receiving stone 20 as shown in an enlarged manner in FIG. A point 7a is formed at the end of the ornamental rotary shaft 7, and the point 7a is pivotally supported by the recess 20a of the receiving stone 20 in a light friction state. The configuration of the other parts of the second embodiment is the same as that of the first embodiment already described with reference to FIGS.

In the second embodiment, the planetary gear 8 meshing with the sun gear 2 is rotated by the rotation of the cylindrical turntable 3, and the decorative rotation shaft 7 fixed to the planetary gear 8 is turned into a cylindrical shape. The rotating body 3 rotates in a bearing state in a light friction state between the concave portion 20a of the lower plate 3b and the pointed end 7a, and the decorative body 6 fixed to the protruding end of the decorative rotating shaft 7 rotates counterclockwise. In addition, the timekeeping operation of the watch has a visual decorative feeling.

As described above, according to the second embodiment, the pointed end 7a of the decorative rotating shaft 7 and the cylindrical turntable 3
The frictional load of the bearing of the decorative rotary shaft 7 with the lower plate 3b of the cylindrical rotary table 3 is greatly reduced by the bearing in the low friction load state with the concave portion 20a of the lower plate 3b, and the decorative body 6 is attached. The decorated rotation shaft 7 can be rotated with a low rotational force, the power consumption of the driving motor of the driving body 1 can be reduced, the space for accommodating the battery can be reduced, and the entire device can be downsized.

Third Embodiment A third embodiment of the present invention will be described with reference to FIG.
FIG. 5 is an explanatory diagram showing a configuration of a main part of a rotary decoration device for a decorative timepiece according to the third embodiment.

As shown in FIG. 5, this embodiment is different from the first embodiment already described with reference to FIGS. 1 and 2 in that the planetary gear 8 has a sun gear through an intermediate gear 22. 2 is engaged. The configuration of the other parts of the third embodiment is the same as that of the first embodiment already described, and thus the description will not be repeated.

In the present embodiment, since the planetary gear 8 is meshed with the sun gear 2 via the intermediate gear 22, the decorative body 6 attached to the ornamental rotary shaft 7 to which the planetary gear 8 is fixed is It rotates in the opposite direction (counterclockwise direction) from the turntable 3, giving a different visual decoration to the timekeeping operation of the timepiece than in the first embodiment, and using the center of the intermediate gear 22 as a fulcrum, The position of the decorative body 6 on the upper plate 3a of the cylindrical turntable 3 can be adjusted. Other operations and effects of the third embodiment are the same as the operations and effects of the first embodiment already described.

Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIG. FIG. 6 is an explanatory diagram showing a configuration of a main part of a rotary decoration device of a decorative timepiece according to the fourth embodiment.

In the present embodiment, as shown in FIG. 6, the sun gear 2 is formed in a cylindrical shape and the inner periphery thereof is different from the first embodiment already described with reference to FIGS. A tooth is engraved on the surface, and a planetary gear 8 located inside the sun gear 2 meshes with the sun gear 2. The configuration of other parts of the present embodiment is the same as that of the first embodiment already described with reference to FIGS. 1 and 2, and therefore, will not be described repeatedly.

In the fourth embodiment, the decorative body 6 fixed to the protruding end of the decorative rotating shaft 7 fixed to the planetary gear 8 by the rotation of the planetary gear 8 disposed inside the sun gear 2. Rotates counterclockwise, giving a visual sense of decoration to the timekeeping operation of the watch. According to the present embodiment, by positioning the planetary gear 8 inside the sun gear 2, it is possible to greatly reduce the size of the whole. Other operations and effects of the present embodiment are the same as the operations and effects of the first embodiment already described.

[0029]

As described above, according to the present invention,
It can be rotated smoothly with low friction load, and the decorative body can be rotated on the upper plate of the turntable while smoothly revolving with low power consumption, giving the decorative watch its unique decoration effect. Will be possible. Further, by changing the size and the ratio of the number of teeth of the planetary gear and the sun gear, the rotational speed and the position on the upper plate of the decorative body can be changed, and various designs can be developed. Further, since the friction reducing means is accommodated in the cavity formed in the planetary gear, there is an advantage that the thickness can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view showing a configuration of a first embodiment of a rotary decoration device for a decorative timepiece according to the present invention.

FIG. 2 is a plan view showing a configuration of the first embodiment.

FIG. 3 is an explanatory sectional view showing a configuration of a waist according to a second embodiment of the rotary decoration device of the decorative timepiece according to the present invention.

FIG. 4 is an explanatory view showing a configuration of a bearing portion of the decorative rotary shaft of FIG. 3;

FIG. 5 is an explanatory diagram showing a configuration of a main part of a third embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a configuration of a main part of a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drive body 2 ... Sun gear 3 ... Rotating table 3a ... Upper plate 3b ... Lower plate 6 ... Decorative body 7 ... Decorative rotating shaft 7a ... Pointed end 8 ... Planetary gear 12, 13 ... Magnet 14 ... Recess 20 ... Receiving stone 20a ... recess 22 ... intermediate gear

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeru Fukuoka Osuma496, Oaza, Showa-cho, Kita-Katsushika-gun, Saitama

Claims (6)

[Claims] 1. A sun gear, a turntable attached to a rotation shaft so as to cover the sun gear, and a rotatable and axially movably attached to an upper plate of the turntable. A decorative body is attached to the protruding one end, and the other end is rotatably held by the lower plate of the rotary table at least one decorative rotary shaft, and the decorative rotary shaft located between the upper plate and the lower plate. A planetary gear that is fixed and the rotational force of the rotary table is transmitted via a sun gear; and a friction reducing unit that reduces a frictional force between the other end of the decorative rotary shaft and the lower plate of the rotary table. A rotary decoration device having a. 2. The friction reducing means is provided on each of the decorative rotary shaft and the lower plate of the turntable, and generates a magnetic repulsive force to float the other end of the decorative rotary shaft from the lower plate. 2. The rotary decoration device according to claim 1, wherein the rotation decoration device is a magnet that causes the rotation. 3. The friction reducing means according to claim 1, wherein the ornamental rotating shaft comprises a pointed end at the other end of the ornamental rotating shaft, and a recess formed in a lower plate of the turntable holding the pointed end. Rotating decoration device. 4. The rotary decoration device according to claim 1, wherein the planetary gear is directly meshed with the sun gear. 5. The rotary decoration device according to claim 1, wherein the planetary gear is meshed with the sun gear via an intermediate gear. 6. The rotary decoration device according to claim 1, wherein said friction reducing means is accommodated in a cavity formed on a surface of said planet gear facing said lower plate.