JPH0577998B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a mechanical clock in which a decoration such as a doll appears on the front when the clock strikes the hour, for example.

[Prior art] Traditionally, typical mechanical clocks include cuckoo clocks in which the front door opens on the hour and a pigeon housed in a frame appears and makes a chirping sound, and music boxes. There are known dolls that appear in front of the doll in time with the melody played by the doll. As the drive device for the decorations in these series of mechanical clocks, rotating gears and fixed gears are used, and large ones using air cylinders and other limit switches are known.

[Problems to be solved] In these conventional examples, the ratio of the size of the drive device to the part that actually moves is large, and it is necessary to have a configuration that hides the drive means provided outside the movable part. It had to be made larger. In addition, if you try to give unique movements to decorations, you will need a drive source and control means separate from the above-mentioned drive device, which will increase the number of parts, complicate the structure, and increase the cost of the karakuri clock. It's becoming the cause.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mechanical clock at a low cost by making it possible to give different movements to decorations, etc. using the same driving source for the rotating body and with a simple configuration.

[Means for Solving the Problems] In order to achieve the above object, the mechanical clock of the present invention includes a rotating body provided with decorations and a fixed member installed concentrically with the central axis of rotation of the rotating body. A decoration comprising a gear, a drive motor mounted on a rotating body, a gear that meshes with the drive gear of the drive motor, and a pinion that meshes with a fixed gear and is formed integrally with the gear. Equipped with a rotation drive. This rotary drive device further includes a small gear that meshes with the fixed gear, a cam provided on the rotating disk that is driven via the small gear, and a driven drive provided on the decoration and that engages with the cam. It is equipped with a decorative drive mechanism consisting of parts.

Furthermore, as a drive mechanism for the decoration, a mainspring is provided, one end of which is supported by the support plate of the drive motor, and the other end of which is latched to a locking pawl that rotates concentrically with the rotating disk. When the decoration moves toward the front, the winding is tightened, and when the decoration is positioned toward the front, the small gear and the fixed gear are disengaged, causing the rotating disk to reverse.

[Operation] When the rotating body equipped with the drive motor rotates, the rotating disk rotates accordingly, and the decoration is moved by the engagement between the cam and the driven part. If the device is equipped with a mainspring, when the decoration is positioned in front, the fixed gear and small gear will disengage, the rotating disk will reverse due to the restoring force of the mainspring, and the cam will release the decoration with each rotation of the rotating disk. Lift up the driven part of and move the decoration even when it is located in front of you.

[Example] An example of the present invention will be described below with reference to the drawings.

As shown in FIG. 7, on the front of the mechanical clock of the present invention, numbers for displaying 1 o'clock to 12 o'clock are formed on each of 12 rotating blocks 1, which will be described later. Each of these rotating blocks 1 has an exterior frame 2
The clock is set at a position where the numbers on the time display surface 71, which will be described later, match the time display of the clock. An hour hand 4 and a minute hand 5 are provided in front of the dial 3 at the center, and are rotationally driven by a clock mechanical body (not shown) provided on the back of the dial 3. At this time, display screen 7
The surface adjacent to block 1 is a decorative surface 72 on which decorations such as dolls are attached as described later, and when the clock strikes the hour as shown in FIG. 8, rotating block 1 rotates and these decorative surfaces 72 are It is set to face the front.

As shown in the first to fifth figures, the rotating block 1 has a rotating body 7 rotatably supported on a mounting body 6.
The exterior frame 2 is attached by the mounting piece 6a of the rotating block.
(See Figure 8). The rotating body 7 has a substantially triangular planar shape, and one surface thereof is a flat surface and is a time display surface 71 on which numbers indicating the hours are formed. The surface next to it is a decorative surface 72 having an arcuate surface. This decorative surface 72 is provided with a decoration 8 consisting of a doll such as a clown. The remaining surfaces are open. The rotating body 7 is rotatably supported by the mounting body 6 by a rotation center shaft 9 that vertically passes through the center.

A drive motor 10 serving as a drive source for the rotating body is housed inside the rotating body 7 with a support plate 11 interposed therebetween. The drive motor 10 is a clock mechanical body (not shown).
A drive current is supplied in response to an hourly signal from the rotor, and the supply of drive current is continued for the time necessary to rotate the rotating body 7 by a predetermined rotation angle, and then the supply of the current is stopped.

As clearly shown in FIG.
A drive gear 12 is provided on the shaft 10a, and the lower end of the drive gear 12 is loosely engaged with an opening 7c formed in the bottom surface of the rotating body 7.

A shaft 11a is integrally provided on the support plate 11, and this shaft passes through an opening 7d formed in the bottom surface of the rotating body 7 and projects downward. A gear 13 is rotatably fitted onto the shaft 11a. Gear 13
is meshed with the drive gear 12, and a pinion 13a provided integrally with this gear 13 projects below the rotating body 7.

A fixed gear 14 is fixedly provided on the mounting body 6 at its bottom surface concentrically with the rotation center axis 9. The fixed gear 14 is provided with a center hole 14a through which the rotation center shaft 9 passes, and a tooth portion 14b is formed on an arcuate surface having a center angle of about 180 degrees around the center hole 14a.
A mounting portion (not shown) for a stopper 15, which will be described later, is integrally provided in the direction opposite to the tooth portion 14b, and other unnecessary portions are cut out. A pinion 13a meshes with the tooth portion 14b.

A stopper 15 made of a ring-shaped elastic body is fixed to the mounting portion of the fixed gear 14 via a fitting 15a. Further, on the lower surface of the rotary body 7, engaging protrusions 7a and 7b are formed at positions having an opening angle of 120° with respect to the rotation center axis 9 to engage with the stopper 15 and prevent the rotation of the rotary body 7. . Engagement projections 7a, 7
The positions of the two engaging protrusions are set so that when each of the two engaging projections b engages with the stopper 15, the hour display surface 71 or the decorative surface 72 faces the front.

Furthermore, a rotating disk 16 for swinging the decoration 8 is provided inside the rotating body 7. A support shaft 16a integrally formed with the rotating disk 16 penetrates the rotating body 7 and projects downward, and a small gear 16b is provided at its lower end. The small gear 16b meshes with the teeth 14b of the fixed gear 14.

A cam 16c is formed on the upper surface of the rotary disk 16 and is a protrusion projecting in the shape of a gentle mountain. A driven portion 8a formed by extending the lower end of the decoration 8 is located on the rotation locus of the cam 16c, and rotation of the rotating disk 16 causes the driven portion 8a of the decoration and the cam 1 to
6c can be engaged.

As shown in FIG. 6, a locking pawl 16d that rotates together with the rotating disk 16 is located near the center of the rotating disk 16.
is provided. The inner end portion of the mainspring 17, whose outer end portion is supported by the grip portion 11b formed on the lower surface of the support plate 11, can be locked onto the locking pawl 16d. Therefore, when the rotating disk 16 rotates clockwise,
The mainspring is wound tightly by the locking pawl 16d, and when the small gear 16b and the fixed gear 14 are disengaged, the rotating disk 16 is reversed by the wound mainspring 17. When the rotating disk 16 rotates counterclockwise with the mainspring 17 not wound tightly, the inner end of the mainspring 17 and the locking pawl 16
d is released, and the rotation of the rotating disk 16 has no effect on the mainspring 17.

Next, the operation of the present invention will be explained.

As shown in FIG. 7, when the hands 4 and 5 are displaying a time other than the hour, the time display surface 71 of all rotating blocks 1 is located in front. At this time, the state of the rotating body 7 is as shown in Fig. 1, with the straight part where the hour display surface 71 is provided facing forward (lower part of the drawing).
One of the engaging protrusions 7a is engaged with the stopper 15. At this time, the decoration 8 is hidden inside the mounting body 6, and the mainspring 17 is in a relaxed state.

When time passes and the time indicates the hour, such as 3 o'clock as shown in Figure 8, the drive motor 10 rotates in response to a signal output from a clock mechanism (not shown), and this rotation is caused by the drive gear. Gear 13 through 12
and rotates the pinion 13a. This pinion 13a rotates while moving as a planetary gear around the rotation center axis 9, and the tooth portion 14 of the fixed gear
move along b. Along with this, the rotating body 7 that serves as the arm of the planetary gear on which the gear 13 is mounted is
The engaging protrusion 7a moves away from the stopper 15 by an angular displacement corresponding to this movement.

As the supply of current to the drive motor 10 continues and the rotating body 7 rotates clockwise as shown in the second figure, the decorative surface 72 gradually appears in front. At this time, the rotating disc 16 rotates clockwise as shown by the arrow as the integrally formed small gear 16b meshes with the teeth 14b of the fixed gear, so that the inner end of the mainspring 17 is locked. It is locked onto the claw 16d and wound tightly. At the same time, the cam 16 on the rotating disk 16
c comes into contact with the driven part 8a every rotation of the rotating disk,
Since the decoration 8 is lifted up via this driven part, the decoration 8 swings around the other end 8b, which is its supporting part, as a fulcrum, as shown in the fifth figure, and moves as if a doll is shaking its body. do.

The rotating block 1 further rotates, and the decorative surface 72
When it is located in the front, the other engaging protrusion 7b comes into contact with the stopper 15, as shown in the third figure, and prevents the rotating body 7 from rotating. At the same time, the supply of current to the drive motor 10 is stopped after a predetermined period of time has elapsed, so that the ornament 8 remains in a stationary state facing forward as shown in the fourth figure. In this case, rotating disk 1
The small gear 16b of No. 6 is disengaged from the teeth 14b of the fixed gear, and the rotating disk 16 is reversed as shown by the arrow by the restoring force of the mainspring 17, and the cam 16c rotates the driven portion 8a with each rotation. Lift it up and activate the movement of decoration 8.

After a predetermined period of time has elapsed with the decoration 8 facing forward, a drive current in the reverse rotation direction is supplied to the drive motor 10 again. As a result, the driving gear 12 is reversely rotated, and the pinion 13a is moved to the toothed portion 14b of the fixed gear 14.
From right to left on the top, return from the position shown in the third figure to the position shown in the first figure. During this return movement, the pinion 16b
However, since the inner end of the mainspring 17 is disengaged from the locking pawl 16d, only the rotating disk 16 rotates idly and returns to the position shown in the first figure, and is engaged. When the protrusion 7a comes into contact with the stopper 15, the rotation of the rotating body 7 is stopped, and almost at the same time, the supply of drive current is stopped and the drive motor 10 is stopped.

In addition to the above-mentioned embodiments, the present invention also provides a rotary disk 16
The mainspring 17 may not be provided, and the teeth of the fixed gear may be long so that the small gear 16b of the rotating disk does not come off the teeth 14b of the fixed gear even if the decorative surface 72 is located in front. . In this case, the rotating disk 16 rotates throughout the rotation of the rotating body 7, and the rotating disk 16 always rotates during the process in which the decorative surface 72 appears and in the process in which it is hidden. The armrest 8 is moved by a cam 16c.
By changing the shape of the cam, the decoration 8 can be given a movement different from that of the previous embodiment.

Furthermore, in the embodiment, when it is on the hour, all of the rotating blocks other than the hour display surface corresponding to the number corresponding to that time rotate, and decorations appear on the surface.
The present invention is not limited to this, and an appropriately selected rotating block may be used. Note that the decorations are not limited to dolls as in the embodiments, but may also adopt animals or other objects.

[Effects] As explained above, the present invention can rotationally drive decorations etc. with a simple configuration, and furthermore, in conjunction with this rotation drive device, rotates a rotating disk equipped with a cam that moves the decoration itself. Therefore, it is possible to give movement to the decoration itself without requiring a separate driving source. Furthermore, since a mainspring is provided in the driving mechanism of the decoration, the movement of the decoration can be made more complex and interesting, and it is possible to provide a mechanical clock at a low cost.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention.
Figures 1 to 3 are plan views of the rotating block showing a state in which the rotating body is in a specific position, Figure 4 is a front view of the rotating block showing a state in which the decorative surface is located in front, and Figure 5 is a plan view of the rotating block showing the state in which the decorative surface is located in the front. FIG. 6 is an enlarged plan view showing the locking state between the locking pawl and the mainspring. FIG. 7 is a front view showing the pointer indicating a time other than the hour. FIG. 8 is a front view showing a state in which the hands indicate the hour. 7... Rotating body, 8... Decoration, 8a... Follower part, 9... Rotation center shaft, 10... Drive motor, 11... Support plate, 1
2... Drive gear, 13... Gear, 13a... Pinion,
14... Fixed gear, 16... Rotating disc, 16b... Small gear, 16c... Cam, 16d... Locking pawl, 17... Mainspring.

Claims (1)

[Scope of Claims] 1. A rotating body provided with decorations, a fixed gear installed concentrically with the rotation center axis of the rotating body,
A decorative rotary drive device comprising a drive motor mounted on the rotating body, a gear that meshes with the drive gear of the drive motor, and a pinion that meshes with the fixed gear and is formed integrally with the gear. The rotary drive device further includes a small gear meshing with the fixed gear, a cam provided on a rotating disk driven via the small gear, and a cam provided on the decoration and connected to the cam. A mechanical clock characterized by having a decorative drive mechanism consisting of an engaging driven part. 2. In claim 1, the drive mechanism for the decoration includes a spring whose one end is supported by the support plate of the drive motor and whose other end is latched to a latching pawl that rotates concentrically with the rotating disk. Preparation: The mainspring is wound tightly when the decoration moves toward the front, and the small gear and the fixed gear are disengaged when the decoration is positioned toward the front, causing the rotating disk to reverse. A mechanical clock featuring