JP2572725Y2 - Clock rotating ornament - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary decoration incorporated in a clock body such as a table clock.
The present invention relates to a double rotating decoration in which two decorative bodies having the same rotation axis are provided.

[0002]

2. Description of the Related Art In today's clock, there is a case where a decorative body showing movement is used in place of a pendulum. For example, the decorative body is reciprocatedly rotated by a vertical rotation axis to show movement and enhance the decoration effect. Sometimes, the atmosphere as a watch is emphasized. Further, in order to enhance the decoration effect, two rotation shafts are used, and the decorations are attached to the respective rotation shafts while keeping the rotation shafts coaxial so that the two decorations are reciprocated in opposite directions to each other. (For example, Japanese Utility Model Publication No. 60-33427).

[0003]

The rotating decoration used for the timepiece body is required to be formed in a small size because the driving part is incorporated into the timepiece body, and the rotation transmitting mechanism is incorporated in the small driving part. Although the movement of the decorative body is relatively simple, the mechanism of the driving unit may be complicated.

In addition, when making a change to the movement of the decorative body,
In some cases, it is necessary to reconfigure the transmission mechanism, and it is difficult to change the operation according to the product.

[0005]

SUMMARY OF THE INVENTION The present invention provides a rotary ornament having two rotating shafts arranged coaxially, two stepping motors which can be rotated forward and backward, and each motor rotates separately on each rotating shaft. A drive control circuit for driving both stepping motors, a pulse counter for counting the number of pulses output to each motor by the drive control circuit, and a rotation speed of the motor; and setting switch circuit having a plurality of switches for switching to set switching control of the rotational direction is provided, before
The drive control circuit receives a signal from the setting switch circuit and the
A first motor and a
A drive control circuit for controlling the forward / reverse rotation of the second motor .

[0006]

[Operation] The present invention uses a rotary drive unit composed of two rotary shafts arranged coaxially, several gear trains for transmitting rotation to both rotary shafts, and two stepping motors. The driving mechanism can be made smaller. Further, since the two rotating shafts are rotated by separate motors, it is easy to cause the two decorative bodies to move differently.

The drive control circuit drives and controls each stepping motor, and a pulse counter for counting the number of pulse signals output from the drive control circuit is provided. The amount of rotation can be detected, and control can be switched by the control circuit every time the motor rotates a fixed amount.

In addition, since there is a setting switch circuit provided with a changeover switch for switching between the rotation speed and the rotation direction control, the setting of the rotation speed and the rotation direction of the rotary decoration can be switched.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an embodiment of a clock decoration according to the present invention has two decorations 11, 2 having coaxial rotation axes.
The first decorative body 11 and the second decorative body 11 are rotated.
As shown in FIG. 2, the rotation drive unit that drives the decorative body 21 includes:
Using two stepping motors 17, 27, each motor 17, 27
, The rotating shafts 13, 23 coaxially arranged are rotated by separate reduction gear trains 15, 25, respectively.

This stepping motor uses a small single-pole motor and has a first coaxially arranged first motor as shown in FIG.
They are arranged symmetrically about the rotation axis 13 and the second rotation axis 23. Then, rotation is transmitted from a rotor 18 sandwiched by a stator 19 of a first motor 17 to a gear 14 attached to a first rotating shaft 13 by a first reduction gear train 15 using a plurality of gears. A two-system rotary drive system is formed so that rotation is transmitted from a rotor 28 sandwiched by a stator 29 of a second motor 27 to a gear 24 attached to a second rotating shaft 23 by a second reduction gear train 25.

The first motor 17 and the second motor 17
The drive control of 27 is performed by setting switch circuit as shown in FIG.
45, a drive control circuit 31, and two pulse counters 41 and 43. The drive control circuit 31 is a control circuit using an integrated circuit.
33, a first drive circuit 35 for outputting a drive pulse signal to the first motor 17 based on a control signal output from the control circuit 33, and a second drive circuit 36 for outputting a drive pulse signal to the second motor 27.
And the two pulse counters have a drive control circuit 31
Causes the first motor 17 and the second motor 27 to count the number of pulses of the pulse signals respectively output thereto. The setting switch circuit 45 is provided with a plurality of changeover switches for changing the settings of the drive control circuit 31.

In this control unit, a drive control circuit 31
The number of pulses of the signal A output to the first line among the pulse signals output from the first motor 17 to the first motor 17 is counted by the first pulse counter 41, and when the pulse counter outputs a predetermined count value n, the first motor One of the pulse signals output to the second line out of the pulse signals output to the first motor 17 is omitted.
The rotation direction of the second motor 27 is also reversed.
, The number of pulses of the D signal output to the first line is changed to the second
When the pulse counter 43 counts and outputs a predetermined number of pulses n, one pulse of the C signal to be output to the second line is omitted and the rotation direction of the second motor 27 is reversed.

Further, the control section is provided with a setting switch circuit 45, and by operating a plurality of changeover switches provided in the setting switch circuit 45, a drive control circuit 31 is provided.
Can set and change the frequency of the pulse signal output to the first motor 17 and the second motor 27, and can also set the rotation direction at the start of rotation of the first motor 17 and the second motor 27, and
The number of pulse counts when interrupting the count value signal input from the first pulse counter 41 or the second pulse counter 43 or omitting one pulse of the second line to the first motor 17 or the second motor 27 n can be changed.

The pulse count number n by which the drive control circuit 31 omits pulses output to the second lines of both motors is:
Basically, the number of pulses of the first motor 17 and the second motor 27, which are reduced by the reduction gear train and the first rotating shaft 13 and the second rotating shaft 23 rotate about one time, are set. The rotation directions of the 17 and the second motor 27 at the start of rotation are basically set so that the first decorative body 11 and the second decorative body 21 are rotated in opposite directions.

As described above, in the present embodiment, the first motor 11 and the second decorative body 21 are driven by the first motor with the number of pulses that make substantially one rotation.
A pulse signal for rotating the motor 17 and the second motor 27 in the reverse direction is output from the drive control circuit 31, and the rotation direction of the first decorative body 11 and the second decorative body 21 is set to be reverse at the start of rotation. The first decorative body 11 and the second decorative body 21
Each time the decorative body 11 and the second decorative body 21 make one rotation, the rotation direction can be operated in a reverse manner.

The frequency of the pulse signal output from the drive control circuit 31 is changed by operating the changeover switch, so that the first
Change the rotation speed of the decorative body 11 and the second decorative body 21, and further,
The section in which one pulse of the second line is omitted by the count value n of the pulse counter is changed, and the first decorative body 11 and the second decorative body are changed.
The rotation range of 21 can be changed to, for example, three-quarter rotation or one-half rotation.

Further, the first decorative body 11 and the second decorative body 21 can be rotated only in one direction so that the two decorative bodies can always be rotated in opposite directions, or by rotating both decorative bodies in the same direction. Various kinds of movements can be set, such as making them look like individual decorations, and one decoration pair rotating in one direction and the other decoration pair rotating forward and reverse within a certain rotation range. .

The present invention has a structure in which the rotating shaft is rotated by a small single-pole stepping motor and a reduction gear train composed of a plurality of gears, and the first rotating shaft 13 and the second rotating shaft 23 are coaxial. And two transmission systems using two stepping motors so as to rotate the motor separately, so that the structure is simple and the drive unit is downsized because it is composed of a small motor and several gears. It is easy.

Further, since the control section is also composed of an integrated circuit, a pulse counter and a plurality of changeover switches, it can be assembled very small. In this embodiment, the first rotation shaft 13 and the second rotation shaft 23 are separately driven by using two stepping motors, that is, the first motor 17 and the second motor 27. It is easy to make the two decorations move differently by making the movement of the body 11 and the second decoration 21 independent, and the setting for changing the operation of the decorations 11, 21 is also easy.
It can be done very easily by the changeover switch provided in the setting switch circuit 45, and it is possible to attach the decorative body corresponding to various clock bodies to the rotating shafts 13 and 23 and set the movement of the decorative body according to the clock body. You can do it.

It is needless to say that the shapes of the first decorative body 11 and the second decorative body 21 are not limited to the shapes using a plurality of spherical weights shown in FIG.

[0021]

[Effect of the Invention] The rotary ornament for a timepiece according to the present invention is obtained by rotating two decorative bodies by two coaxial rotating shafts.
Since the two rotation shafts are rotated by using the two stepping motors and the two reduction gear trains, the size of the rotation drive unit for separately rotating the two rotation shafts with a simple structure is reduced. It is easy to control the rotation of the two decorations by providing the changeover switch in the control unit and operating the two decorations by the two drive systems.
Direction, rotation speed, and rotation amount.
And combine various actions of two decorations
This is a rotating decoration for a timepiece that can perform a rotating decoration operation and can easily enhance a decoration effect.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing a structure of a timepiece according to the present invention.

FIG. 2 is a plan view showing a control section of the timepiece according to the present invention.

FIG. 3 is a block diagram showing a control unit of the clock decoration according to the present invention;

FIG. 4 is a diagram showing an example of a drive pulse waveform of the clock decoration according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 1st decoration body 13 1st rotation shaft 15 1st reduction gear train 17 1st motor 21 2nd decoration body 23 2nd rotation shaft 25 2nd reduction gear train 27 2nd motor 31 Drive control circuit 33 Control circuit 35 1st Driving circuit 36 Second driving circuit 41 First pulse counter 43 Second pulse counter 45 Setting switch circuit

Claims (1)

(57) [Scope of request for utility model registration] The present invention further comprises: a rotating shaft of two decorative bodies arranged coaxially; a stepping motor capable of rotating forward and backward; and transmitting a rotation from the first motor to the first rotating shaft independently. comprising first reduction gear train and a second reduction gear train that transmits its own rotary from the second motor to the second rotary shaft, each Suteppi
Each counting the number of pulses to be output to the ring motor
Two and pulse counter for outputting a signal to, the pulse
A setting switch circuit with enabling interruption of the signal from the counter switches the setting of the forward and reverse rotation of the stearyl <br/> Tsu ping motors, the signal from the setting switch circuit path
A first motor and a
A drive control circuit for controlling forward and reverse rotation of the second motor.
This is a rotating decoration for watches.