JP2782172B2 - Mechanism clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a mechanical timepiece.

[0002]

2. Description of the Related Art Conventionally, when a swinging ornament and a rotating ornament are provided on a mechanical timepiece, the swinging ornament and the rotating ornament have been driven through separate transmission paths from a drive source. Specifically, rotation of the motor which is a drive source is transmitted to the rotating ornament via the deceleration gear train driving rotating it, while swinging decorations,
The rotary motion by the motor is converted into a rocking motion via a cam mechanism, a link mechanism, or the like, and transmitted to a rocking decoration, which is rockingly driven. Also, when rotating the rotating decoration at the position after the swinging of the swinging decoration, the gear train is meshed at the position after the swinging to form a wheel train to rotationally drive the rotating decoration. I have. In the case where the swinging motion is a pendulum motion, a separate driving source is provided, one of which drives a rotary decoration by rotation of a motor, and the other of which drives a pendulum using a magnet and an atto circuit. Was.

[0003]

In the above conventional example,
Separate transmission paths must be provided from the drive sources, or each drive must be provided by a separate drive source, which complicates the construction and therefore requires a long time and costly assembly work. Will be. Further, if the gears are meshed at the position after the swing, the tooth profile may be damaged at the time of meshing of the gears, an impact sound may be generated at the time of meshing, or the transmission of the rotational force may be inconvenient. An object of the present invention is to smoothly drive swinging and rotating motions by one transmission path from one drive source so as not to cause tooth damage, and to perform complicated motions with a simple configuration. To achieve cost reduction.

[0004]

In order to achieve the above object, a mechanical timepiece according to the present invention is provided with a drive gear rotatably driven by a forward / reverse rotation motor and a drive shaft of the drive gear rotatably supported. And a clutch wheel frictionally engaged with the drive gear via a friction clutch, and a swing arm connected to the clutch wheel. A regulating means for regulating the rotation angle of either the clutch wheel or the swing arm is provided. A rotary drive gear that rotates integrally with the drive shaft of the drive gear and functions as a sun gear, a planetary gear rotatably supported by the swing arm and meshes with the rotary drive gear, and a rotatable arm that can rotate And a rotary ornament having a gear that is rotatably supported and meshes directly or indirectly with the planetary gear. When the clutch wheel is rotating integrally with the drive gear, the swing arm is rocked and displaced without rotation of the rotary ornament, and when the rotation of the clutch wheel is restricted by the restricting means, the frictional clutch is used. The swing decoration is rotated by restricting the swing of the swing arm. Preferably, the friction clutch is a conical clutch. It is desirable that a lock means for locking the swing arm be provided.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a time display section 2 is provided at the center of the front of a timepiece frame 1 and is rotatably provided on the front of a dial 2a provided with an hour scale. Hour hand 2b
The time is displayed by the minute hand 2c.
A swing decoration 3 is provided above the time display unit 2, and is driven to swing left and right within a predetermined angle range by receiving a driving force from a timepiece mechanical body (not shown).

[0006] Below the time display section 2, a mechanism 4 is provided.
Is arranged. In the mechanism 4, there are four sets of pairs each consisting of a doll- shaped decoration 5 and a rotating decoration 6 that appears to be rotated by the doll- shaped decoration . The decoration 5 in the shape of a doll and the rotating decoration 6
The doll's hand is rotatably connected to the eccentric position of the rotary decoration 6,
The connection between the arm and the body is also connected rotatably. Further, the mechanism 4 includes one of the rotary decorations 6.
A swing arm 7 that is driven to swing about the center of rotation of the swing arm 7 and a rotary ornament 8 rotatably attached to the tip of the swing arm 7 are provided. The rotating ornament 8 is a simulated record, and at the normal time, as shown in FIG.
Are rotated by the swinging motion of the ornaments 5 in the shape of the circle, the swing arm 7 is swung, the rotating ornament 8 is moved to the center position, and the rotating ornament 8 is rotated at this center position. The melody is played, so that the mechanism is performed.

[0007] The drive mechanism of the mechanism 4 will be described with reference to FIGS. A case main body 9 including a front case 9a and a rear case 9b for accommodating the driving mechanism is disposed on the back of the watch frame 1. The protruding portion 9c protruding forward from the front case 9a is provided on the watch frame 1. In the opening 1a. A forward / reverse rotation motor 10 serving as a drive source is fixed in the case body 9, and the rotational force of the motor 10 is transmitted from the motor pinion 10 a to the gears 11, 12, 13, 14, 15.
Is transmitted to Further, the power is transmitted from the gear 13 to the gears 17 and 18 via the drive gear 16.

The front end of a drive shaft 19 provided at the center of the gears 13, 15, 18 so as to rotate integrally therewith penetrates the front case 9a and the watch frame 1 and protrudes to the front. The rotating decoration 6 shown in FIG. Drive gear 1
The drive shaft 20 penetrates the center of 6 so as to be non-rotatable with each other and movable in the axial direction. The drive shaft 20 has a protrusion 9c
, And protrudes to the front surface, and the rotary ornament 6 shown in FIGS. A washer 21 is fixed to the drive shaft 20, and the washer 21 and the drive gear 16 are fixed.
The drive gear 16 is biased forward by interposing the coil spring 22 between the drive gear 16 and the drive gear 16. Drive gear 16
A clutch wheel 23 is provided on the front side and inside the protruding portion 9c so as to face the drive gear 16. The clutch wheel 23 is provided on the drive shaft 20 so as to be rotatable and movable in the axial direction. A bush 24 that restricts the axial movement of the clutch wheel 23 is fixed to the drive shaft 20 at a position in front of the clutch wheel 23. . The drive gear 16 and the clutch wheel 23 are frictionally engaged via a friction clutch. As an example of the friction clutch, conical clutches 16 provided opposite to each other are provided.
a and 23a are resiliently contacted and frictionally engaged by the spring force of the coil spring 22, and the frictional force connects the two, that is, the drive gear 16 and the clutch wheel 23 so as to be able to be connected and disconnected. When the friction clutch is engaged, the clutch vehicle 2
3 rotates integrally with the drive gear 16, but the clutch wheel 23
When the rotation of the drive gear 16 is restricted, the clutch is disconnected and the conical clutches 16a and 23a slip and the drive gear 16
Only rotate. A projection 23 for connecting the swing arm 7 from the clutch wheel 23 toward the front.
b and 23c protrude.

As a regulating means for regulating the rotation angle of the clutch wheel 23, in other words, the swing angle of the swing arm 7,
The protrusions 23b and 23c penetrate through regulating holes 9d and 9e formed on the front surface of the protrusion 9c and protrude forward, and the swing arm 7 is connected to the protruding end. The restricting holes 9d and 9e are arc-shaped long holes, and the projections 23b and 23c can move from one end to the other end of the restricting holes 9d and 9e. Regulating.

A drive shaft 20 is rotatably penetrated through the base of the swing arm 7, and the rotary ornament 6 described above is fixed to a projecting end of the drive shaft 20 projecting from the swing arm 7. . A support member 25 is fixed to the back side of the swing arm 7 at a predetermined interval by a screw 40, and the drive shaft 20 rotatably penetrates a base of the support member 25. Protrusion 23
The tip of b is fitted and fixed in the hole formed in the base of the support member 25, and at the same time, the tip of the projection 23c passes through the hole formed in the swing arm 7 and the base of the support member 25. A screw 26 is screwed and fixed. As a result, the clutch wheel 23 and the swing arm 7 rotate (swing) integrally about the drive shaft 20.

The rotary ornament 8 has a decorative plate 8a attached to the front side thereof, and is rotatably supported in the gap between the swing arm 7 and the support member 25. On the back of the rotating decoration 8,
Is provided with a integrally roller wheel 27, the central axis 2 protruding teeth 27a of the roller wheel, the support member 25 to the front
A planetary gear 28 rotatably supported by 5a meshes. A rotary decoration drive gear 29 functioning as a sun gear is fixed to the drive shaft 20, and the planetary gear 28 meshes with the rotary decoration drive gear 29. Therefore, the rotary decorative drive gear 29 is connected to the drive shaft 20 that rotates integrally with the drive gear 16.
Is transmitted to the drum wheel 27, and the rotary decoration 8 is rotationally driven.

The motor 10 is driven to rotate forward by inputting an hour signal from a timepiece body (not shown) to a motor drive circuit. At the end of the performance, a reverse signal is supplied and the motor 10 is driven to rotate reversely. Pressing the operating piece 30a of the switch 30 shown in FIG. 4 is performed by supplying a signal output from the switch 30 to the motor drive circuit. That is, the cam portion 23d is provided on the outer peripheral portion of the clutch wheel 23.
And the motor 10 is driven in the reverse direction so that the clutch wheel 23
Is reversed, the cam portion 23d presses the operating piece 30a, causing the switch 30 to generate a stop signal for the motor 10 . When the motor 10 is stopped, the protrusions 23b, 23c
Are set at one end sides (see FIG. 4) of the restriction holes 9d and 9e. As shown in FIG. 5, a back cover 31 is provided behind the front cases 9a and 9b.

FIGS. 6 and 7 show the lock mechanism. As explained above, the swinging arm 7 has the clutch wheel 2 at its base.
3 is connected via projections 23b and 23c, and is a cantilevered state in which a rotating ornament 8 is connected to the tip thereof. Therefore, when a watch is carried, its swinging direction (horizontal direction in FIG. 1).
Also, it is likely to be displaced in the thickness direction (the front-back direction in FIG. 1), resulting in an unstable state. Therefore, this is locked during transport to prevent accidental damage.

The lock lever 32 is bent in a Z-shape, and is pivotally supported by a pin 33 at the center of the outer surface of the corner of the front case 9a. A locking claw 3 is attached to one end of the lock lever 32 that bends forward.
2a is formed. A locking recess 25b is formed on the back surface of the support member 25, and the locking claw 32a is
5b. The other end of the lock lever 32 extends rearward and protrudes outward from the hole 31a of the back cover 31 to form an operation portion 32b. A click protrusion 32c is formed at a position of the lock lever 32 facing the front case 9a, and a click protrusion 32c is formed on the front case 9a side.
Is provided with a concave portion 9f. The swing angle of the lock lever 32 is determined by the positioning pins 3 formed on the front case 9a.
4a and 34b.

With such a structure, at the hour,
The normal signal is supplied, the motor 10 is driven to rotate forward, and the gears 13, 15, 18 and the drive gear 16 rotate via the transmission wheel train. By this rotation, the rotating ornaments 6 are rotated, and the doll- shaped ornaments 5 are connected through the arms connected to the eccentric positions.
… Swings slightly back and forth. In the initial stage of starting, the drive gear 16 and the clutch wheel 23 are connected to each other by the conical clutch 16a.
And 23a are frictionally engaged by receiving the spring force of the coil spring 22, and the clutch is in a connected state, so that the clutch wheel 23 rotates with the rotation of the drive gear 16 and swings accordingly. The moving arm 7 swings. Drive gear 1
The drive shaft 20 and the rotary decoration drive gear 29 also rotate integrally with the rotation arm 6, but the swing speed of the swing arm 7 and the rotation decoration drive gear 29
Are the same as the rotation speed of the drive gear 16, no rotation is transmitted between the rotary decoration drive gear 29 and the planetary gear 28, and therefore, the swing arm 7 The phase with the rotary ornament 8 remains the same. As a result, the rotary ornament 8 does not rotate during the swing displacement. As a result of this rotation of the clutch wheel 23, the projections 23b and 23c move through the restriction holes 9d and 9e in FIG.
Is moved from one end to the other end, the rotation of the clutch wheel 23 is restricted, so that the conical clutches 16a and 23a slip against the frictional force between them due to the spring force of the coil spring 22. That is, the clutch is disconnected, the rotational force of the drive gear 16 is not transmitted to the clutch wheel 23, and the swing of the swing arm 7 integrated with the clutch wheel 23 is restricted.

For this reason, the rotation of the rotary decoration drive gear 29 due to the rotation of the drive gear 16 is transmitted to the drum wheel 27 via the planetary gear 28, and the rotary decoration 8 starts rotating for the first time. When the melody is played at this time, a karaoke operation is performed as if music were played by the rotation of the record board (rotary decoration 8).

When the performance of the melody is completed and the motor 10 is driven in the reverse direction, the drive gear 16 starts to rotate in the reverse direction and the regulation is released, so that the disconnected clutch is connected again and the clutch wheel 23 is also driven. Reversely rotate at high speed, and the projections 23b, 2
3c returns from the other ends of the restriction holes 9d and 9e to one end, and at this time, the operating portion 30a of the switch 30 is pressed by the cam portion 23d to generate a stop signal of the motor 10. Thus, a series of karakuri operations are completed. At the next hour, the same mechanism is repeated again.

At the time of transporting the timepiece, when the operating portion 32b of the lock lever 32 is operated to swing the lock lever 32 , the locking claw 32a is locked by the locking recess 25b of the support member 25.
, The swing arm 7, the support member 25, and the rotary decoration 8
Is locked immovably in all directions.

As regulating means, projections 23b and 23c are formed on the clutch wheel 23, and these projections are used to regulate the regulating holes 9d and 9c.
e, the rotation angle of the clutch wheel 23 is restricted by moving the inside of the clutch wheel 23. However, the invention is not limited to this.
A projection is formed on the swing arm 7, and the projection is formed in the restriction holes 9d and 9d.
e may be configured to move in the
May be provided with a member that abuts against the member and regulates its swing, and various other regulating means can be constructed. Also, the configuration of the friction clutch is not limited to the cone clutch,
Other various clutches can be applied.

[0020]

According to the timepiece according to the present invention, the forward / reverse rotation motor is used as one drive source by one transmission path.
The swing arm is displaced by swinging to rotate the rotating ornament.Because the gears do not re-mesh on the way, the tooth profile is not damaged and the torque is always smoothly transmitted.
Complex movements can be realized with a simple configuration, and cost reduction can be achieved. Further, by using a conical clutch as the friction clutch, even when wear occurs on the friction surface or when there is a variation in the force of elastically contacting the friction surface, a change in slip torque can be extremely reduced.
Further, by providing the locking means, it is possible to prevent damage during transportation.

[Brief description of the drawings]

FIG. 1 is a front view of a normal state.

FIG. 2 is a front view of a mechanism operating state.

FIG. 3 is an enlarged front view showing a swing arm and a rotary ornament.

FIG. 4 is an enlarged front view showing a driving mechanism of the mechanism.

FIG. 5 is an enlarged sectional view of a main part of a drive mechanism of the mechanism.

FIG. 6 is an enlarged front view showing a lock mechanism.

FIG. 7 is a sectional view of a main part of the above.

[Explanation of symbols]

Reference Signs List 7 swing arm 8 rotating decoration 9d, 9e regulating means (regulating hole) 10 forward / reverse rotation motor 16 drive gear 16a friction clutch (conical clutch) 20 drive shaft 23 clutch wheel 23a friction clutch (conical clutch) 27 gear (drum wheel) 28 Planetary gear 29 Rotating decoration drive gear (sun gear)

Claims (3)

(57) [Claims] A drive gear rotatably driven by a forward / reverse rotation motor, rotatably supported on a drive shaft of the drive gear, and frictionally engaged with the drive gear via a friction clutch. A clutch wheel, a swing arm connected to the clutch wheel, a regulating means for regulating a rotation angle of either the clutch wheel or the swing arm, and a sun gear which rotates integrally with a drive shaft of the drive gear. A rotatable decorative drive gear, a planetary gear rotatably supported by the oscillating arm and meshing with the rotary decorative drive gear, a rotatably supported by the oscillating arm and directly connected to the planetary gear. Or a rotary ornament having a gear that meshes indirectly, and when the clutch wheel is rotating integrally with the drive gear, the swing arm swings without rotating the rotary ornament. When the rotation of the clutch wheel is restricted by the restricting means, the rotation of the oscillating arm is restricted via the friction clutch, whereby the rotary decoration rotates. . 2. The timepiece according to claim 1, wherein the friction clutch is a conical clutch. 3. An apparatus according to claim 1 or 2, automaton clock, wherein a locking means for locking the swing arm is provided.