JPH0453592Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a drive device for a rotating ornament used in a decorative clock or the like.

(Prior Art) The present applicant has previously proposed a system in which two rotating ornaments arranged in parallel are rotated by a single balance device, as described in Japanese Utility Model Application No. 60-152984.

(Problems to be Solved by the Invention) However, the device described in the above publication requires the use of a plurality of magnets, which results in a large number of parts and poor assembly workability. Furthermore, since the secondary rotating decoration is driven to rotate by the magnetic action of the magnet provided on the main rotating decoration, there is a problem in that the secondary rotating decoration must be placed near the main rotating decoration. .

The present invention was made in order to solve the above-mentioned conventional problems, and its purpose is to provide a double rotating decoration device that has a simple configuration and is capable of reciprocating rotational movement of rotating decorations arranged in parallel. That's true.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, a first drive shaft to which the upper balance wheel is fixed and a second drive shaft to which the lower balance wheel is fixed are connected to one end of the upper balance wheel and the second drive shaft to which the lower balance wheel is fixed. The lower balance wheel is rotatably supported so that one end thereof is arranged in an overlapping manner, and a first drive magnet and a second drive magnet are respectively fixed to the overlapping position of the upper balance wheel and the lower balance wheel so that different poles thereof face each other. A detection drive coil is installed between the first drive magnet and the second drive magnet, and a first gear is provided on the first drive shaft, and a first gear is provided on the second drive shaft and meshes with the first gear. a first rotating shaft to which two gears are respectively fixed and a third gear that meshes with the first gear; a second rotating shaft to which a fourth gear that meshes with the second gear is fixed;
is rotatably supported, and the first rotating shaft and the second
It is characterized by a rotating decoration attached to each rotating shaft.

(Example) An example of the present invention will be described below with reference to FIGS. 1 to 5.

As shown in FIG. 1, a first drive shaft 2, a second drive shaft 4, a first rotation shaft 6, and a second rotation shaft 8 made of a magnetic material such as iron have a frame body that functions as a receiving plate member. 10 and 12, respectively, and upper end portions 6a and 8a of the first rotating shaft 6 and the second rotating shaft 8 project upward through the frame 10, respectively. An upper balance wheel 14 is fixed to the upper part of the first drive shaft 2, and a lower balance wheel 16 is fixed to the second drive shaft 4 at a position below the upper balance wheel 14 at a predetermined distance. The right end of the upper balance wheel 14 and the left end of the lower balance wheel 16 are arranged so as to overlap. The upper balance wheel 14 and the lower balance wheel 16 are made of a magnetic material such as a thin steel plate, and have a first driving magnet 18 at the right end of the upper balance wheel 14 and a second driving magnet 20 at the left end of the lower balance wheel 16, each having different polarities. They are stuck facing each other. Note that 22 and 24 are balancers for the drive magnets 18 and 20. A well-known detection drive coil 26 that magnetically cooperates with the drive magnets 18 and 20 is fixed to a substrate 28, and this coil 26 is fixedly fixed to the frames 10 and 12. Retained. Further, a first gear 30 is provided at the bottom of the first drive shaft 2, and a second gear 32 meshing with the first gear 30 is provided at the bottom of the second drive shaft 4.
are fixed, respectively. The same gear is used for the first gear 30 and the second gear 32, and the first gear 30 and the second gear 32 are the same gear.
The drive shaft 2 and the second drive shaft 4 rotate together at the same speed. On the other hand, a third gear 34 that meshes with the first gear 30 is attached to the first rotating shaft 6, and a second gear 32 is attached to the second rotating shaft 8.
Since the fourth gear 36 that meshes with the 4th gear 36 is fixed, the driving force is transmitted to the first rotating shaft 6 and the second rotating shaft 8 from the first driving shaft 2 and the second driving shaft 4,
Upper ends 6a, 8 of the first rotating shaft 6 and the second rotating shaft 8
The rotary decorations 38 and 40 attached to a are rotated, respectively. Note that in this embodiment, the third gear 3
Since the same gear is used for the fourth gear 4 and the fourth gear 36, the rotating ornaments 38 and 40 rotate at the same period and at the same vibration angle.

The present embodiment has the above configuration, and its operation will be explained next. Figures 2 to 5 are A-A in Figure 1.
FIG. 3 is an operation explanatory diagram based on a line cross-sectional plan view.

FIG. 2 shows a stationary state, in which the first drive magnet 18 and the second drive magnet 20 are opposed to each other with a coil 26 interposed therebetween. In this state, when current flows through the coil 26, the driving magnet 1
8 and 20 are given a driving force in the direction of arrow B, the first drive shaft 2 is given a driving force in the direction of arrow C, and the second drive shaft 4 is given a driving force in the direction of arrow D.
A first rotating shaft 6 to which a third gear 34 that meshes with the first gear 30 is fixed, and a second rotating shaft 8 to which a fourth gear 36 that meshes with the second gear 32 is fixed are rotated in the directions indicated by the arrows. It is rotated in the E direction and the arrow F direction, respectively.

As shown in FIG. 3, the first drive shaft 2, the second drive shaft 4, the first rotation shaft 6, and the second rotation shaft 8 are arranged in the direction of the arrow C, the direction of the arrow D, the direction of the arrow E, and the direction of the arrow F, respectively. Continue rotating. However, the first drive shaft 2 and the second
As the drive shaft 4 continues to rotate, the first drive magnet 18 and the second drive magnet 20 move in the direction of the arrow G and the direction of the arrow H.
Since the suction force acting in each direction acts as a reaction force of the rotational force of the first drive shaft 2 and the second drive shaft 4, the first
The drive shaft 2, the second drive shaft 4, the first rotation shaft 6, and the second rotation shaft 8 gradually reduce their rotational speeds,
It will stop temporarily.

FIG. 4 shows the temporary stop state. In this state, an attractive force is applied to the first drive magnet 18 and the second drive magnet 20 in the direction of arrow G and the direction of arrow H, respectively, and this attraction force causes the first drive shaft 2 and the second drive shaft 4 to , the first rotating shaft 6 and the second rotating shaft 8 start rotating in the direction of the arrow I, the direction of the arrow J, the direction of the arrow K, and the direction of the arrow L, respectively.

As the first drive shaft 2 and the second drive shaft 4 rotate in the direction of arrow I and the direction of arrow J, the first
As the distance between the drive magnet 18 and the second drive magnet 20 becomes closer, the attractive force acting on the drive magnets 18 and 20 gradually increases, causing the first drive shaft 2, the second drive shaft 4, the first rotation shaft 6, and the second rotation The rotational speed of the shaft 8 increases. As shown in FIG. 5, when the first drive magnet 18 and the second drive magnet 20 cross the coil 26, due to the cooperative action of the coil 26 and the drive magnets 18, 20, the first drive magnet 18 and the second drive magnet 20 A driving force is applied to the drive magnet 20 in the direction of the arrow M, and the first drive shaft 2, second drive shaft 4, first rotation shaft 6, and second rotation shaft 8 are moved in the direction of the arrow I, the direction of the arrow J, and the direction of the arrow K, respectively. Continue rotating further in the direction of arrow L.

Similar actions are performed thereafter, and the first drive shaft 2, second drive shaft 4, first rotation shaft 6, and second rotation shaft 8 perform reciprocating rotational motion. Therefore, the first rotating shaft 6 and the second
The rotating decorations 38 and 40 attached to the rotating shaft 8 perform reciprocating rotational movements in mutually opposite directions.

In implementing the present invention, the maximum swing angle of the first drive shaft 2 and the second drive shaft 4 is within the range in which the attractive force of the drive magnets 18 and 20 becomes a reaction force of the drive force given by the coil 26. , the swing angle is not one rotation, but the first gear 3 of the third gear 34
Gear ratio to 0 and the second gear 3 of the fourth gear 36
By setting the gear ratio to 2 to 1 or less, the rotating decorations 38 and 40 can obtain a swing angle of 1 rotation or more.

Furthermore, in this embodiment, the rotating ornaments 38, 40
rotates at the same period and at the same vibration angle, but the gear ratio of the third gear 34 to the first gear 30 and the gear ratio of the fourth gear 36 to the second gear 32 can be set to be different. Accordingly, the rotating decorations 38 and 40 can be rotated at the same period and at different vibration angles.

(Effects of the invention) According to the invention, two rotating decorations arranged in parallel can be reciprocated and rotated in opposite directions with a much simpler configuration than the conventional one. In addition, since the two rotating decorations are each driven by two rotating shafts, there is no need to place the rotating decorations close together as in the past, and other effects of implementing the present invention are achieved. There are many things.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention. Second
5 through 5 are operation explanatory diagrams based on cross-sectional plan views taken along the line A-A in FIG. 1. 2...First drive shaft, 4...Second drive shaft, 6...
First rotating shaft, 8... Second rotating shaft, 14... Upper balance wheel, 16... Lower balance wheel, 18... First drive magnet,
20...Second drive magnet, 26...Coil, 30...
...First gear, 32... Second gear, 34... Third gear, 36... Fourth gear, 38, 40... Rotating decoration.

Claims (1)

[Scope of utility model registration request] A first drive shaft to which an upper balance wheel is fixed and a second drive shaft to which a lower balance wheel is fixed are rotatably supported such that one end of the upper balance wheel and one end of the lower balance wheel are overlapped. A first drive magnet and a second drive magnet are fixed to the overlapping position of the lower balance wheel and the lower balance wheel so that their different poles face each other, and
A detection drive coil is installed between the drive magnet and the second drive magnet, and a first gear is further mounted on the first drive shaft.
A second gear that meshes with the first gear is fixed to the second drive shaft, a first rotating shaft that has a third gear that meshes with the first gear, and a fourth gear that meshes with the second gear. A double rotating decoration device, characterized in that it rotatably supports a second rotating shaft to which a gear is fixed, and rotating decorations are attached to each of the first rotating shaft and the second rotating shaft.