JPS6239344Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a cuckoo clock in which the opening/closing operation of the decorative door and the decoration operation of the cuckoo body can be performed by a single drive mechanism, and furthermore, it is possible to cause the cuckoo body to perform new movements. It has been made possible.

In conventional cuckoo clocks, a drive mechanism for opening and closing the decorative door and a drive mechanism for decorating the cuckoo body are separately provided.

FIG. 1 is a perspective view of the conventional cuckoo clock.

The decorative door 1 is fixed to an outer box (not shown) so as to be openable and closable, and is connected by a connecting rod 2 to a pigeon support rod 3 that fixes a pigeon body 6. This pigeon support rod 3 is driven by a drive lever 5 via a drive shaft 4.

When the hour reaches the hour or another designated time, the drive lever 5 rotates the drive shaft 4 in the direction of arrow A, and the rotation of the drive shaft 4 pushes out the pigeon support rod 3 in the direction of arrow B. For this purpose, the decorative door 1 is opened by means of the connecting rod 2. In this state, the whistles 9 and 10 perform a bellows operation the number of times specified by the clock train, and an audio notification is made.

A pigeon body drive lever 8 for causing the pigeon body 6 to perform a decorative operation is fixed to the whistle 9, and the pigeon body 6 is moved up and down as shown by arrow C in accordance with the bellows movement of the whistle 9. The pigeon body 6 is swingably fixed to the pigeon support rod 3, and has a structure in which the wings 6a are opened and closed by vertical movement as shown by arrow C. Therefore, it appears as if the pigeon body 6 is reporting the time.

A conventional cuckoo clock has the structure described above.

However, according to this method, the decoration operation of the pigeon body 6 is performed by a mechanism different from the opening/closing mechanism of the decorative door, that is, a pigeon body drive lever 8 solidly attached to the whistle 9, which reduces the number of parts and assembly man-hours. There was a problem with this point.

Furthermore, while the pigeon body 6 is performing the decoration operation, it is necessary to keep the decorative door 1 open, and for this reason, the drive lever 5 is held in the open position of the decorative door 1 by a lock lever (not shown). Was. However, the self-returning force of the pigeon support rod 3 in the direction of arrow D by the spring is required to hold the drive lever 5.
To release this holding, a force greater than the self-returning force of the pigeon support rod 3 was required. This has led to unstable holding and inability to release.

This invention was created in view of the conventional problems mentioned above, and its purpose is to improve the opening and closing operation of decorative doors,
To provide a cuckoo clock which can perform the decoration operation of a cuckoo body by one driving mechanism and can also cause the cuckoo body to perform a new operation.

In order to achieve the above object, the present invention includes an outer box in which a clock mechanism is housed, a decorative door provided on the outer box so as to be openable and closable, and a pigeon-like body at the upper end. A pigeon support rod installed with a pigeon support rod, a drive shaft that drives the pigeon support rod, a drive lever that is driven by a drive cam that rotates in conjunction with the clock train, and that drives the drive shaft, and a drive lever that drives the drive shaft and rotates in conjunction with the clock train. and a lock mechanism that controls the movement of the drive lever, and the drive cam has a shape with three stages of diameter, and at the first diameter, the pigeon support rod is in the position where the decorative door is closed, and the drive cam has a shape with three stages of diameter. Rotation to the diameter of the second stage drives the pigeon support rod to the open door position, further rotation to the diameter of the third stage moves the pigeon support rod further forward, and the diameter of the third stage drives the pigeon support rod to the open position. The pigeon support rod is prevented from retreating below the opening position of the decorative door by controlling the drive lever by a lock mechanism while the rod repeats back and forth movement a preset number of times.

Embodiments of the present invention will be described below based on the drawings.

Fig. 2 is a perspective view of a cuckoo clock according to an embodiment of the present invention, Fig. 3 is a front view of the drive cam, Figs. 4 a to d are explanatory views of the operation of the drive cam mechanism, and Figs. 5 a to c are decorative doors. FIGS. 6 a to 6 c are explanatory diagrams of the operation of the pigeon body.

In FIG. 2, a decorative door 21 is fixed to an outer box 20 so as to be freely opened and closed. The decorative door 21 is connected to a connecting rod 2
2 is connected to the elastic body 23.
3 is fixed to a pigeon support bar 25, and a pigeon body 24 is swingably fixed to the upper end of the pigeon support bar 25. The pigeon body 24 is structured so that the wings open when it is swung up and down relative to the pigeon support bar 25. The pigeon support bar 25 is pushed in the direction of arrow E by a drive shaft 26, and is returned in the direction of arrow F by the restoring force of a return spring 25a. The drive shaft 26 drives the movement of the drive lever 28 toward the pigeon support bar 25.
The drive lever 28 is provided with a Z-shaped through hole 31 which engages with the lock shaft 29a of the lock lever 29.
The clock 8 is driven in the direction of the arrow G by a driving cam 27 having a three-stage diameter which rotates in the direction of the arrow H by a clock wheel train 30.

As shown in FIG. 3, the drive cam 27 has a three-step diameter shape.

In the figure, the pigeon support rod 25 is at a position where the decorative door 21 is in a closed state at a diameter R ₁ , and at a diameter R ₂ -
R ₁ is the length to give the pigeon support rod 25 the stroke necessary to fully open the decorative door 21, and the diameter R ₃ - _{R 2} is the stroke necessary to make the pigeon body 24 perform the decorative operation. This shows the length for giving the pigeon support rod 25 a. Further, the angle Q ₁ indicates a range having a diameter of R ₂ in the drive cam 27, and Q ₂ indicates a range having a diameter of R ₂ or more.

Next, the operation of this drive cam 27 will be explained.

In FIG. 4a, the protrusion 28b of the drive lever 28
is in contact with the smallest diameter range _R1 of the drive cam 27, and the lock shaft 29a of the lock lever 29 (not shown) is engaged with the lower stage 31a of the Z-shaped through hole 31 of the drive lever 28. In this state, the pigeon support rod 25 is attached to the decorative door 21 as shown in FIG.
is in the closed position.

Next, in FIG. 4b, the protrusion 28b of the drive lever 28 is in contact with the range of the angle Q ₁ of the drive cam 27 in FIG. 3 because the drive cam 27 has rotated in the H direction. For this reason, the drive lever 28 is
8c in the direction of arrow G, the diameter of the drive cam 27
It rotates by a rejection T ₁ corresponding to R ₂ −R ₁ , and this rotation pushes the pigeon support rod 25 by a stroke S ₁ in the direction of arrow E through the drive shaft 26, as shown in FIG. 5b. Therefore, the decorative door 21 opens until it contacts the stopper 20a of the outer box 20, that is, to the fully open position. In this fully open position of the decorative door 21, it is necessary to hold the decorative door 21 so as not to close it. Therefore, the lock lever 29 moves in the direction of arrow i in conjunction with the clock train (not shown), and as a result, the lock shaft 29a comes into contact with the right wall 31c of the upper stage 31b of the Z-shaped through hole 31, and the drive lever 28 Prevent backtracking.

Next, in FIG. 4c, the protrusion 28b of the drive lever 28 comes into contact with a portion of the diameter R ₃ of the drive cam 27 in FIG. are doing. Therefore, the drive lever 28 has been further rotated by a distance _T2 corresponding to the diameter _R3 - _R2 of the drive cam 27 from the position shown in FIG. 4b. This rotation, via the drive shaft 26, pushes the pigeon support rod 25 in the direction of arrow E by a stroke _S2 from the position shown in FIG. 5b, as shown in FIG. 5c. This stroke _S2 is a necessary separation in order to cause the pigeon body 24 installed at the upper end of the pigeon support rod 25 to perform a decorative operation. In FIG. 5c, the decorative door 21 is held in the fully open position by the stopper 20a. Therefore, the stroke S ₂ is absorbed by the elastic body 23.

Next, in FIG. 4d, the protrusion 28b of the drive lever 28 is in contact with a portion of the diameter R ₂ of the drive cam 27 due to the rotation of the drive cam 27 in the direction of the arrow H, and therefore the drive shaft 28 is 4. From the position shown in Fig. 4c, move backward in the direction of arrow J by a distance _T2 corresponding to the radius _R3 - _R2 .

As a result, the pigeon support rod 25 returns from the position shown in FIG. 5c to the position shown in FIG. 5b.

The drive cam 27 in the present invention is rotated in the direction of arrow H by the clock wheel train 30 shown in FIG.
This rotation is performed a preset number of times on the hour and at other specified times. The first and last rotations of these rotations are used to open and close the decorative door 21, and the other rotations are used to cause the pigeon body 24 to perform decorative operations. That is, the drive cam 27 is driven within the range of angle _Q2 having a diameter greater than or equal to _R2 of the drive cam shown in FIG. 3, and the operations shown in FIGS. 5b to 5c are repeated. Therefore, during this time, it is necessary to hold the pigeon support rod 25 so that it does not retreat below the position shown in FIG. 5b. Therefore, at the stage shown in FIG. 4d, the drive lever 28 is moved back below the position shown in the figure, that is, in the direction of arrow J, since the lock shaft 29a of the lock lever 29 is in contact with the right wall 31c of the Z-shaped through hole 31. do not.

Also, in the last rotation of the drive cam 27, the fourth
At the stage shown in FIG. d, the drive lever 28 is released from being held by moving the lock shaft 29a to the chain line position. At this time, the drive shaft 26 causes the drive lever 2 to
The restoring force of the pigeon support rod 25 applied to the drive cam 2
7 and the protrusion 28b of the drive lever 28 at the contact point K. Therefore, the driving force needed to move the lock shaft 29a to the chain line position is minimal.

In Fig. 4d, the lock shaft 29a moves to the chain line position and the holding of the drive lever 28 is released, and the drive cam 27 further rotates in the direction of arrow H and returns to the state shown in Fig. 4a, and the rotation of the drive cam 27 stops. do. In this state, the drive cam 28 moves in the direction of arrow J from the position shown in FIG _.
−Retreat by a rejection T ₁ corresponding to R ₁ . As a result, the pigeon support rod 25 returns to the position shown in FIG. 5a, and the decorative door 21 is closed.

Next, the decoration operation of the pigeon body 24 installed at the upper end of the pigeon support rod 25 will be explained.

In FIG. 6a, the decorative door 21 is in a closed state, and at this time the drive cam mechanism is in the state shown in FIG. 4a.

In FIG. 6b, the pigeon support rod 25 is pushed out by a stroke _S1 by the drive shaft 26 from the state shown in FIG. At this time, the pigeon body 24 installed on the pigeon support rod 25 is
A protrusion 24a projecting downward is in a position where it comes into contact with the outer box 20. The drive cam mechanism in this state is in the state shown in FIG. 4b.

In FIG. 6c, _{the pigeon support rod 25 is pushed out by the drive shaft 26 by a stroke S 2 from} the state shown in FIG. It remains fully open as well. On the other hand, in the pigeon body 24, the protrusion 24a is connected to the outer box 20.
The pigeon support rod 25 rotates by an angle L from the position shown in FIG. 6b. The pigeon body 24 has a structure in which its wings are spread out due to the inclination of this angle L, but since this structure is extremely common, a description thereof will be omitted. In the state shown in FIG. 6c, the drive cam mechanism is in the state shown in FIG. 4c.

Next, when the drive cam mechanism is in the state shown in FIG. 4d, the pigeon body 24 is again in the state shown in FIG. 6b.

The drive cam 27 of the present invention rotates a set number of times on the hour and at other specified times. Therefore, the pigeon support rod 25 repeats the operations shown in FIGS. 6b to 6c a set number of times. In other words, the pigeon body 24 moves forward by a stroke _S2 , swings at an angle L, and spreads its wings, which are repeated a set number of times.

Next, when the drive cam 27 finishes rotating the set number of times and returns to the state shown in FIG. 4 d to FIG. closes.

The operation of the pigeon body 24 described above is performed in synchronization with the time signal sound, and if the time signal mechanism is based on a whistle as shown in the conventional example shown in FIG. By setting the position of the pigeon body 24, it is easy to synchronize the time signal and the operation of the pigeon body 24.

Also, in recent years, time notifications using electronic sounds have become widely used. In a watch equipped with such a time notification function using an electronic sound, in addition to setting the position of the drive cam 27 and the clock train, the position of the drive cam 27 or the movement of the drive lever 28 is detected electrically. By doing this, the pigeon body 24 when the electronic alarm is sent.
It is also easy to match the decoration behavior.

As explained above, according to the embodiment of the present invention,
A single cam mechanism can be used to open and close the decorative door, as well as to perform decorative operations on the pigeon body, that is, an operation that adds back and forth oscillations to the conventional operation of simply oscillating up and down and opening the wings. Furthermore, the decorative door can be released from being held in the fully open position with the minimum driving force.

As described above, according to the present invention, since the drive cam has a three-step diameter shape, the opening/closing operation of the decorative door and the decoration operation of the pigeon body are performed by one drive mechanism, and the pigeon body A new decorative motion can be performed, and therefore the drive mechanism that was conventionally necessary for the decorative motion of the pigeon body is no longer necessary, and the number of parts and assembly man-hours can be reduced.

In addition, according to the present invention, the decorative movement of the pigeon body is performed without using a mechanical transmission mechanism from the bellows movement of the flute, which is the time signal mechanism, as in the past, so the time signal is mechanically transmitted. It is possible to synchronize both clocks with the current time and clocks with electronic sounds to the time signal.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional cuckoo clock, Fig. 2 is a perspective view of an embodiment of the present invention, Fig. 3 is a front view of the drive cam, and Figs. 4 a to d are explanatory diagrams of the operation of the drive cam mechanism. 5A to 5C are explanatory diagrams of the operation of the decorative door, and FIGS. 6A to 6C are explanatory diagrams of the operation of the pigeon body. 20... Outer box, 21... Decorative door, 22... Connecting rod, 23... Elastic body, 24... Pigeon body, 25... Pigeon support rod, 26... Drive shaft, 27... Drive cam, 2
8... Drive lever, 31... Drive lever through hole,
29...Lock lever, 29a...Lock shaft, 3
0...Clock wheel train.

Claims (1)

[Scope of utility model registration request] An outer box in which a clock mechanism is housed, a decorative door provided on the outer box so as to be openable and closable, a pigeon support rod that opens and closes the decorative door via a connecting rod and has a pigeon body installed at its upper end; A drive shaft that drives the support rod, a drive lever that is driven by a drive cam that rotates in conjunction with a clock train and drives the drive shaft, and a lock mechanism that works in conjunction with the clock train to control the movement of the drive lever. The drive cam has a shape with three diameter stages, and at the first stage diameter, the pigeon support rod is in the position where the decorative door is closed, and when it rotates to the second stage diameter, the pigeon support rod is in the position where the decorative door is closed. The support rod is driven to the open position of the decorative door, and the pigeon support rod is further advanced by rotation to the diameter of the third stage, and the diameter of the third stage causes the pigeon support rod to move back and forth a preset number of times. The cuckoo clock is characterized in that the drive lever is controlled by a lock mechanism while repeating the cuckoo clock so that the cuckoo support rod does not retreat below the opening position of the decorative door.