JPS6231901Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a rotating decoration device for a watch, and more specifically, the rotating decoration member is characterized in that the rotating decoration member moves back and forth in a direction perpendicular to the center of rotation while rotating.

FIG. 1 shows a conventional rotating decoration device, in which a rotating decoration member 2 is fixed to a drive shaft 4 of a support device 3. As shown in FIG. The electromagnetic drive device includes a drive shaft 4, a hairspring 5 whose one end is fixed to the drive shaft 4 and the other end is fixed to the front board 18, permanent magnets 8, 8, and balance weights 10, 10 centered on the drive shaft 4. The permanent magnets 8, 8 and the counterweights 10, 1 are fixed symmetrically.
Two swing wheels 12 and 1 each having a number 0 arranged opposite to each other.
4, and a detection drive coil 24 fixed to a substrate 22 at an intermediate position between the swing rings 12 and 14. The drive shaft 4 of the heaven mechanism 15 is connected to the front board 18 and the rear board 20 of the support device 3.
It is rotatably supported on the shaft.

In this conventional rotating decoration device, the permanent magnets 8, 8 of the swing rings 12, 14 and the detection drive coil 24 are repelled by the same polar magnetic force generated from the detection drive coil 24, and the permanent magnets 8, 8 and the detection drive coil 24 are repelled and shaken. The wheels 12, 14 and the rotating decorative member 2 are rotationally driven in one direction. The driving force is stored in the hairspring 5, and after the rotational driving force due to the electromagnetic force of the detection drive coil 24 disappears, the rotating decorative member 2 freely vibrates with the spring force stored in the hairspring 5. This free vibration is the first
This is continued by the short-term driving force of the detection drive coil 24 in the drive position shown. Therefore, the rotating decorative member 2 fixed to the drive shaft 4 of the electromagnetic drive device continues its rotational movement.

In this conventional rotary decoration device, the drive shaft 4 is rotatably supported at the same position on the support device 3,
The rotating decorative member 2 continues to rotate only at the same position. As a result, the decorative effect was unsatisfactory.

The purpose of the present invention is to provide a rotary decoration device that allows the rotary decoration member 2 in the conventional device to continue its rotational motion and also to move in a direction perpendicular to the center of rotation, with a simple structure and at a low manufacturing cost. shall be.

In order to achieve this object, the present invention includes a rotating ornamental member, a drive device that electromagnetically drives the rotating ornamental member, a support device that supports a drive shaft of the drive device,
In the rotating decoration device, the supporting device includes a mounting portion having an arcuate curved surface that is rotatable in a direction perpendicular to the center of rotation while the drive shaft of the drive device rotates, and is characterized in that it rotates integrally with the drive shaft and reciprocates in a direction perpendicular to the center of rotation.

The present invention will be described below based on an embodiment of the present invention shown in the drawings.

FIG. 2 is an external view of a table clock equipped with a rotating decoration device of the present invention, and a case 30 is equipped with a clock mechanism (not shown) and a rotating decoration device. The clock mechanism displays the current time using the hands 34 and 36 of the time display section 32. A rotating decoration device 40 is housed in the lower part of the case 30, and the rotating decoration member 42 can be seen from the outside of the case 30.

FIG. 3 is a sectional view of the rotary decoration device, and in the figure, inside the case 30 are a front board 44 and a rear board 4.
A support station 45 with 6 is fixed. As shown in FIG. 4, the front substrate 44 and the rear substrate 46 have drive shaft guide elongated holes 48, 50 with arcuate curved surfaces.
is drilled. In the illustrated embodiment, the elongated hole 4
8 and 50 are arranged in parallel so that the drive shaft 52 can be inserted therethrough;
Similarly to the arc-shaped curved surface of No. 50, bent plates or rods may be arranged side by side.

The drive device is composed of a drive body 51 and a detection drive coil 54, which constitute a conventionally known sky mechanism. The drive body 51 is fixed to a drive shaft 52 with swing wheels 56 and 58 arranged in an overlapping manner. Furiwa 56,5
8, permanent magnets 60, 62 and counterbalance weights 64, 66 are arranged opposite to each other, and the permanent magnets 60, 62 are arranged opposite to each other.
62 and counterweights 64 and 66 are arranged symmetrically with respect to the drive shaft 52. The detection drive coil 54 is attached to a stator 47a protruding from the base 47 of the support device 45, and a part of the detection drive coil 54 is attached to the permanent magnets 60, 6.
It is fixed so as to be located approximately in the center of 2.

The drive body 51 is placed with the drive shaft 52 of the drive body 51 inserted through the elongated holes 48 and 50 of the support device 45, and the rotary decorative member 42 is mounted on one end of the drive shaft 52.
However, a member 53 for preventing the drive shaft 52 from coming off is fixed to the other end so that it can rotate integrally. Since the slip-off prevention member 53 and the protrusion 59 of the swing ring 58 are arranged with an appropriate distance between them, movement of the drive body 51 in the directions of the third arrows A and B shown in the figure is restricted. As a result, the detection drive coil 54 and the permanent magnets 60, 62 are prevented from coming into contact within the space between the opposing permanent magnets 60, 62 of the swing rings 56, 58. As a result, when an electromagnetic drive action occurs between the permanent magnets 60, 62 and the detection drive coil 54, the drive body 51 and the rotating decorative member 42 can be driven to rotate. Further, the positions of the permanent magnets 60 and 62 are set so that they are in the state shown in FIG. 3 when the rotating decorative member 42 is stationary.

FIG. 5 shows a drive circuit for driving the detection drive coil 54, and the detection coil 54 is connected to the base of a transistor 70 via a capacitor 72.
4a is connected, and the detection coil 54a is connected to the positive terminal of the power source. Further, the resistor 74 is connected in parallel to the capacitor 72 and the detection coil 54a to the base of the transistor 70 and the positive terminal of the power supply. A capacitor 76 is connected between the collector and base of the transistor 70. The collector of the transistor 70 is connected to the positive terminal of the power source via the drive coil 54b. Therefore, when the permanent magnets 60, 62 of the swing rings 56, 58 rotate while holding the detection coil 54a, the detection coil 54a
A detection voltage that turns on the transistor 70 is generated, and as a result, a large drive current flows through the drive coil 54b connected to the collector of the transistor 70, and the electromagnetic force between the drive coil 54b and the permanent magnets 60 and 62 causes the drive body 51 to be turned on. is driven to rotate.

The illustrated embodiment of the present invention is constructed as described above, and its operation will now be described with reference to FIGS. 2 and 3.

Power switch of rotating decoration device 40 (not shown)
When is in the off state, the rotating decorative member 42 is stationary in the state shown in FIG. When the power switch is set to the on state and electromagnetic force is generated in the detection drive coil 54, the detection drive coil 54 and the swing ring 5
Magnetic repulsion is generated in the permanent magnets 60 and 62 of 6 and 58. As a result, the swing wheels 56 and 58 are
By being rotated in the direction of the arrow C or D in the figure, the drive shaft 52 of the drive body 51 and the rotating decoration member 42 are rotated in the direction of the arrow C or D. Therefore, the driver 5
1 drive shaft 52 is connected to the elongated holes 48, 50 of the support device 45.
It moves while rotating in the direction of arrow C or D on the mounting surfaces 48a and 50a of. As a result, the rotating decorative member 4
2 appears to be rotating and moving in the direction of arrow C or D. When the drive shaft 52 is rotated, for example, in the direction of arrow C, the drive shaft 52 is rotated through the elongated holes 48, 5.
The driving body 5 is returned after hitting the first wall surfaces 48b and 50b of
1 and the weight of the rotating decorative member 42, it is returned to the position shown in FIG. 2 while being inverted. And the driving body 51
The permanent magnets 60 and 62 are connected to the detection drive coil 54.
When it rotates while holding it in place, as described above, the detection drive coil 54 is driven again to generate an electromagnetic force, and the swing wheels 56 and 58 are further rotated by receiving a repulsive force in the direction of arrow D. continue. Then, the rotating ornamental member 42 is returned against the second wall surfaces 48c, 50c of the elongated holes 48, 50, or is returned by the weight of the drive body 51 and the rotating ornamental member 42 in the middle of the mounting surfaces 48a, 50a. It is then returned to the position shown in FIG. 2 while being inverted. By repeating this operation thereafter, the rotating decoration member 42 appears to be moving in the directions of arrows C and D while rotating.

In the illustrated embodiment, the rotating decorative member 42 has a gear shape, but it can also be used, for example, with a sticker on which a doll or the like is printed, so that the shape of the printed doll changes when viewed from a different angle. By pasting the sticker, it is possible to provide a rotating ornament device for children in which the rotational changes of the rotating ornament member 42 are emphasized.

Note that the mounting surfaces 48a and 50a of the elongated holes 48 and 50 on which the drive shaft 52 of the support device 45 is mounted have a triangular or circular cross section in the thickness direction in order to reduce the coefficient of friction with the drive shaft 52. It can be molded into By placing the drive shaft 52 on the apex, the rotating decoration member 42 can be rotated even with a small electromagnetic repulsive force and can be moved in a direction perpendicular to the center of rotation. Therefore, current consumption can be reduced.

As described in detail above, according to the present invention, the drive shaft of the conventionally known drive body for rotating the rotary decorative member has at least two arcuate curved surfaces arranged in parallel on the front and rear substrates of the support device. The driving body is rotatably mounted on the top of the body, and the driving body uses the electromagnetic force generated by a well-known detection drive coil and the magnetic repulsion force of a pair of permanent magnets fixed to two swing rings that make up the driving body. This allows the rotating decorative member to move in a direction perpendicular to the center of rotation while rotating. Therefore, the operation of the rotating decorative member is emphasized to the user, and the decorative effect of the rotating decorative device can be improved. Furthermore, since the rotating decorative member of the present invention can be sufficiently rotated without a hairspring, the structure is simple and the number of parts can be reduced.

Therefore, since the number of assembly steps is small, it is possible to provide a rotary decoration device that is inexpensive to manufacture.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional rotating decoration device. FIG. 2 is an external view of a timepiece equipped with the rotating decoration device of the present invention.
FIG. 3 is an enlarged cross-sectional view taken along the line - in FIG. 2. FIG. 4 is a front view of the support device. Figure 5 shows the drive circuit. 30... Case, 42... Rotating decoration member, 45... Support device, 48, 50... Elongated hole, 48a, 50a... Placement surface, 51... Drive body, 54... Detection drive coil, 5
6,58...Swing ring, 60,62...Permanent magnet.

Claims (1)

[Scope of utility model registration request] A rotating decorative device including a rotating decorative member, a drive device that electromagnetically drives the rotating decorative member, and a support device that supports a drive shaft of the drive device, wherein the support device includes a drive shaft of the drive device. The mounting portion has an arcuate curved surface that is movable in a direction perpendicular to the drive shaft while rotating, and the rotating decoration member is movable in a direction perpendicular to the center of rotation while rotating integrally with the drive shaft. A rotating clock decoration device that moves back and forth.