JP2726842B2 - Movable decorative drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device for a movable ornament such as a clock.

[0002]

2. Description of the Related Art A timepiece having a movable ornament has, for example, two movable dials movable in opposite directions to each other. The movable dial is opened at every hour, and the movable ornament appears in an opening. (Doll) performs a series of operations (Japanese Patent Publication No. 5-75997, JP-A-6-222161)
No.) or a fixed dial, a rotating dial is provided on the back side, and the rotating dial is provided with a rotating dial having a movable ornament (doll). (Puppet) showing movement (5-23
183) and the like are known. There is also known a driving device for a rotary decoration (for example, Japanese Patent Application Laid-Open No. 4-213095), which always rotates using a step motor without using a balance spring.

[0003]

The above-mentioned prior art is provided with two movable dials, and at every hour, the movable dial is opened, and a movable ornament (doll) appearing at the opening is a series of ones. In operation, it is necessary to provide a drive source (motor) for driving the movable dial and another drive source (motor) for driving the movable decoration (doll) separately from this. The structure is complicated and expensive. In the case where the rotary dial rotates and the movable ornament (doll) moves, there is only one drive source (motor). However, the movable ornament (doll) has a cam and a cam follower that follows the cam. Only swings the arm to the left and right, the movement is extremely simple and lacks interest. Furthermore, in a driving device for a rotary decoration that constantly rotates using a step motor, the decoration simply rotates in the circumferential direction at all times, and the decoration itself does not move in a special manner, and also lacks in taste. . SUMMARY OF THE INVENTION It is an object of the present invention to provide a driving device for a movable decoration having a simple configuration and having a dream at a low cost.

[0004]

In order to achieve the above object, a driving apparatus for a movable ornament according to the present invention comprises a rotating member driven by a driving means and having first and second cam surfaces formed thereon. A decoration mounting body is provided behind the rotating body so as to be freely displaceable. The decoration mounting body has a first cam follower that follows the first cam surface, and the decoration mounting body swings. The swing lever provided movably is provided with a second cam follower that follows the second cam surface, and a decoration is provided on each of the rotating body and the swing lever.
The rotation center axis of the above-mentioned rotator may be eccentric with respect to the geometric center of the rotator.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a movable ornament driving device according to the present invention is applied to a table clock will be described.
As shown in FIG.
And a time display section comprising hands 3 and 4. Below the time display section, there is provided a movable ornament 10 which moves for a certain period of time at every hour. This movable ornament 10
It comprises a rotating ornament 11 that rotates eccentrically, and a swing ornament 12 that swings above the rotating ornament 11. A monitor button 5 for experimentally moving the movable ornament 10 is provided at the lower right of the front of the clock frame 1.

Referring to FIG. 2, the structure of the swing ornament 12 will be described. As shown in FIG. 2, a vertically long rectangular ornament mounting body 20 has a convex portion 20a protruding below the front center. The projection 20a has the first
A cylindrical roller 21, which is a cam follower, is provided rotatably. The convex part 2 is located near the center of the front of the decorative mounting body 20.
0b is formed in a protruding manner.
The upper end portion of an L-shaped swing lever 9 is swingably attached through the shaft. A cylindrical roller 2 serving as a second cam follower is provided on the lower end of the swing lever 9 via a pin 7.
2 is provided rotatably. On the front surface of the upper end of the swing lever 9, a swing decoration 12 imitating the shape of an automobile is fixed. On the back of the decorative mounting body 20, a support panel 3 described later is provided.
A pair of protrusions 20c, 20 fitted in the slit 30a
c is protrudingly formed, and the projections 20c, 20c have
Screws 23, 23 are screwed respectively.

Next, the structure of the rotary ornament 11 that rotates eccentrically will be described with reference to FIG. 3. As shown in FIG. 3, an ornament driving movement 32 as a driving means is provided on the back surface of the support panel 30. It is mounted via mounting screws 31. Output shaft 32 protruding from this movement 32
a protrudes forward through the support panel 30, and a rotator 34 is attached to a protruding end portion thereof via a mounting nut 33. The rotating body 34 has a front circular shape, and its geometric center 34P is deviated by a predetermined length from the output shaft 32a projecting from the movement 32, that is, the rotating center axis. 34 rotates eccentrically about the output shaft 32a. The support panel 30 has a vertically long slit 3
The protrusions 20c, 20c on the back surface of the decorative attachment body 20 are fitted into the slits 30a. Here, the decorative mounting body 20 is slit 3 by screws 23,23.
It is impossible to drop from 0a. Therefore, the decorative attachment body 20 can slide (displace) vertically with respect to the support panel 30. As shown in FIG.
A first cam surface 34a formed of a wavy surface composed of twelve peaks and valleys is formed on the inner peripheral portion of the rotating body 34, and a cylindrical cam that is a first cam follower is formed on the first cam surface 34a. Rollers 21 are engaged. A flange 34c protrudes outside the cam surface 34a, and the roller 21 is located between the inner peripheral surface 34d of the collar 34c and the cam surface 34a. It follows without coming off the cam surface 34a. Collar 34
The outer peripheral surface 34b of c is a second cam surface, and the cylindrical roller 22 as a second cam follower is engaged with this cam surface 34b. Three mounting holes 34e are formed in the front surface of the rotating body 34, and three mounting arms 11a projecting from the rear surface of the rotary ornament 11 are snap-connected to the mounting holes 34e. The rotating ornament 11 is concentrically attached to the front surface of the rotating body 34, and the rotating ornament 11 rotates eccentrically with the rotating body 34. The front surface of the rotating ornament 11 has a spherical shape, and an illustration (not shown) depicting the earth is drawn on the spherical surface. A flange 11b protrudes from the outer peripheral portion of the back of the rotary ornament 11, and the roller 22
The roller 22 is located between the inner peripheral surface of the cam surface 34b and the cam surface 34b, so that the roller 22 follows the cam surface 34b without detaching from the cam surface 34b.

[0008] Upon receiving an hour signal from a not-shown timepiece mechanical body, the decoration driving movement 32 is activated, and the output shaft 32 is driven.
The rotating body 34 and the rotating decoration 11 are integrally driven to rotate clockwise via the line a. As described above, since the geometric center 34P of the rotating body 34 is deviated by a predetermined length from the output shaft 32a, that is, the rotation center axis, the rotating body 34 rotates eccentrically clockwise. With the rotation of the rotating body 34, the roller 21 follows the first cam surface 34a, so that the decorative mounting body 20 moves up and down. When the rotating body 34 rotates clockwise by 90 degrees from the initial position in FIG. 4A to the state shown in FIG. 4B, the geometric center 34P of the rotating body 34 is
a, the decoration mounting body 20 moves up from the initial position together with the roller 21, the roller 22 moves down from the initial position, and the rear part of the swinging decoration 12 is lowered rearward (rightward in FIG. 4). Present. When the rotating body 34 further rotates clockwise by 90 degrees from the position of FIG. 4B to the state of FIG. 4C, the geometric center 34P of the rotating body 34 is shifted to the rotation center axis 32a.
, The decoration mounting body 20 further rises together with the roller 21, and the roller 22 rises again, and the swing decoration 1
2 has the same horizontal state as the initial position. The rotating body 34 further rotates clockwise by 90 degrees from the position shown in FIG.
In the state (d), the geometric center 34P of the rotating body 34
Is located to the right of the rotation center axis 32a, the decoration mounting body 20 is lowered together with the rollers 21, the rollers 22 are further raised, and the front part of the swinging decoration 12 is lowered forward (left side in FIG. 4). Present. As the roller 21 follows the first cam surface 34a with the eccentric rotation of the rotating body 34, the decorative mounting body 20 moves up and down little by little, and the roller 22 moves to the second cam surface. Since the swing lever 9 swings right and left around the pin 8 by following the movement of the car 34b, the car (the swing decoration 12) moves over the field on the rotating earth (the rotation decoration 11). You can get a movement as if you are moving over a mountain. As described above, after the rotator 34 and the rotating ornament 11 rotate clockwise integrally and a predetermined time has elapsed, a stop signal is sent to the ornament driving movement 32, and the movement of the movable ornament 10 stops.

In this embodiment, the first cam surface 34a is
Although the second cam surface 34b is a flat circumferential surface, the present invention is not limited to this, and may be constituted by various shapes. In addition, an illustration depicting the earth is provided on the front of the rotating ornament 11, and a swing ornament 12 imitating the shape of an automobile is employed. However, the present invention is not limited to this, and is constituted by various shapes. You may.

[0010]

According to the movable ornament driving device of the present invention,
Different movements can be given to each of the two decorations by one driving means, and a driving device for a movable decoration having a fun and dream can be provided at a low cost with a simple configuration (claim 1). If the rotation center axis of the rotator is decentered with respect to the geometric center of the rotator, a more varied movement can be given to the decoration (claim 2).

[Brief description of the drawings]

FIG. 1 is a front view of a table clock to which a driving device for a movable ornament according to the present invention is applied.

FIGS. 2A and 2B are enlarged views of a main part of the swing decoration, wherein FIG. 2A is a front view, FIG. 2B is a cross-sectional view, and FIG.

FIG. 3 is an enlarged view of a main part of the movable ornament, (a) is a front view, and (b) is a cross-sectional view.

FIG. 4 is a front view illustrating the operation of the movable ornament.
(A) is an initial state, (b) is a state in which the rotating ornament is rotated clockwise 90 degrees, (c) is a state in which the rotating ornament is rotated clockwise 180 degrees, and (d) is a state in which the rotating ornament is clockwise 270 degrees. Shows the rotated state.

[Explanation of symbols]

 Reference Signs List 9 swing lever 11 decoration (rotating decoration) 12 decoration (rotating decoration) 20 decoration mounting body 21 first cam follower (roller) 22 second cam follower (roller) 32 driving means (decorative drive movement) 32a Rotation center axis (output shaft) 34 Rotating body 34a First cam surface 34b Second cam surface 34P Geometric center of rotating body

Claims (2)

(57) [Claims] A rotating body driven to rotate by driving means; first and second cam surfaces formed on the rotating body; and a decorative mounting body provided displaceably behind the rotating body. A first cam follower provided on the decorative mounting body and following the first cam surface; a swing lever provided on the decorative mounting body so as to swing freely; and a swing lever provided on the swing lever. And a second cam follower that follows the second cam surface; and a decoration provided on each of the rotating body and the swing lever. 2. The movable ornament driving device according to claim 1, wherein a rotation center axis of the rotating body is eccentric with respect to a geometric center.