JP2004028972A - Driving-gear and clock equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving-gear which is used for decoration of a clock etc. and is excellent. <P>SOLUTION: The driving-gear is provided with a motor 200, and two or more plates 300a, 300b, 300c arranged being lapped mutually, and rotates the plates in the forward and reverse directions respectively by the drive of the motor. Each plate is provided with a shaft 310 which supports the plate itself rotatably, and inserting portions 330 for inserting shafts which support the other plates rotatably. Moreover, the driving-gear is provided with guide portions 320 formed on each plate and on one side of its outside, and pulleys 410 which are fitted on the plate and on the other side of its outside and engage with the guide portions. Besides, the center of gravity G<SB>1+2</SB>of the plate is set so as not to pass a vertical line L which crosses the shaft center (i.e. rotating shaft) of the plate with the rotation of the plate. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a driving device that rotates a plate body in the forward and reverse directions by driving a motor, and is used for decoration of a watch.
[0002]
[Prior art]
Wall clocks and table clocks tend to be favorably decorated, and this type of clock has a drive device that drives a decorative plate body at regular or predetermined timing. is there. For example, a timepiece equipped with a driving device is configured to generate a notification sound at a scheduled time and to drive the driving device.
[0003]
[Problems to be solved by the invention]
Now, in order to obtain a more interesting decorative timepiece, the inventor of the present application has invented a drive device in which a plurality of plate bodies protrude from the back side of the dial. That is, the plurality of plate bodies are arranged on the back side of the dial plate so as to overlap each other, and are rotatably supported by a plurality of shafts eccentric with respect to the center of the dial plate, and rotate forward and backward by driving the motor. . The point to be considered here is to rationally avoid interference between each plate body and each shaft. In addition, since the center of gravity of the plate body moves with rotation, a configuration that sufficiently secures the stability of the movement of the plate body is important.
[0004]
This invention is made | formed in view of this situation, The objective is to provide the more excellent drive device.
[0005]
[Means for Solving the Problems]
The invention described in claim 1 of the present application is a drive device that includes a motor and a plurality of plate bodies arranged to overlap each other, and each of the plurality of plate bodies rotates forward and backward by driving the motor, The plate body is provided with a shaft that rotatably supports the plate body and an insertion portion through which the shaft that rotatably supports the other plate body is inserted, and a guide is provided on one of the plate body and the outside thereof. And a pulley that engages with the guide portion on the other of the plate body and the outside thereof. According to such a configuration, an excellent drive device can be obtained.
[0006]
In other words, the drive device of the present invention can provide an interesting movement in which a plurality of plate bodies that are arranged on top of each other rotate forward and backward. Interference between each plate body and each shaft is avoided by inserting a shaft that supports another plate body through the insertion portion of the plate body. Further, by engaging the guide portion provided on one of the plate body and the outside thereof and the pulley provided on the other of them, the rotational motion of the plate body is reliably stabilized, and more elegant and beautiful movement. Can be obtained.
[0007]
The invention described in claim 2 of the present application is the drive device according to claim 1, wherein the guide member is provided on the plate body, and the guide member is an edge of the insertion portion. According to such a configuration, a more excellent drive device can be obtained.
[0008]
That is, the guide portion can be provided by forming the edge of the insertion portion. If the insertion portion and the guide portion are integrated in this way, the plate body can be simplified and the plate body can be easily manufactured. There is an advantage that can be done.
[0009]
According to a third aspect of the present invention, in the first or second aspect, the second guide portion is provided on the other of the plate body and the outside thereof, and the second guide is provided on one of the plate body and the outside thereof. It is the drive device of the structure which provided the 2nd pulley engaged with a part. According to such a configuration, a more excellent drive device can be obtained.
[0010]
That is, by engaging the guide body and the second pulley provided on one side of the plate body and the outside thereof, and the pulley and the second guide section provided on the other side of the plate body, the rotation operation of the plate body is further improved. Certainly stabilized.
[0011]
The invention described in claim 4 of the present application is the structure according to any one of claims 1 to 3, wherein stop position restricting means is provided outside the plate body to abut against the plate body and restrict its stop position. Drive device. According to such a configuration, a more excellent drive device can be obtained.
[0012]
That is, when the plate body is brought into contact with the stop position restricting means and stopped, there are advantages that the stop position is accurately set and the support of the plate body at the stop position is reliably stabilized.
[0013]
The invention described in claim 5 of the present application is the drive device according to claim 4, wherein the stop position regulating means is another pulley for holding the plate body. According to such a configuration, a more excellent drive device can be obtained.
[0014]
That is, according to the other pulley as the stop position restricting means holding the plate body, the movement of the plate body in the radial direction and the thrust direction is efficiently suppressed, and the support of the plate body at the stop position is further stabilized.
[0015]
The invention described in claim 6 of the present application is the structure according to claim 4 or 5, further comprising an urging means for urging the plate body, which has stopped in contact with the stop position restricting means, toward the stop position restricting means. Drive device. According to such a configuration, a more excellent drive device can be obtained.
[0016]
In other words, the plate body that is in contact with the stop position restricting means may rotate unnecessarily under the influence of its own weight or the like and be separated from the stop position restricting means when the motor stops. In this respect, according to the present invention, since the urging means urges the plate body toward the stop position restricting means, the support of the plate body at the stop position is further stabilized, and such inconvenience is avoided.
[0017]
According to a seventh aspect of the present invention, in the sixth aspect of the present invention, a groove provided in the plate body, a drive pin that engages with the groove and rotates as the motor is driven, and a shaft of the plate body are provided. A coil spring mounted thereon, and the biasing means sandwiches the coil spring between the plate body and the drive pin, and the plate body abuts on the stop position restricting means and the drive The drive device is configured to be biased toward the stop position restricting means by elastically deforming the elastic body while the pin moves in the groove portion. According to such a configuration, a more excellent drive device can be obtained.
[0018]
In other words, in the present invention, the plate body rotates while being pushed by the drive pin via the coil spring as an elastic body, and the motor stops when it is overrun to some extent immediately after the plate body comes into contact with the stop position restricting means. Is done. When the motor overruns, the drive pin moves inside the groove and an elastic force is accumulated in the coil spring. The elastic force accumulated in the coil spring becomes a biasing force that biases the plate body toward the stop position restricting means. By using the coil spring in this way, the biasing means is rationally configured.
[0019]
According to an eighth aspect of the present invention, in any one of the first to seventh aspects of the present invention, there is provided drive means for switching according to the position of the plate body, and controlling the motor according to the switch means. Device. According to such a configuration, a more excellent drive device can be obtained.
[0020]
That is, according to such switch means, it becomes possible to efficiently control the motor in accordance with the position of the plate body.
[0021]
The ninth aspect of the present invention is the driving device according to any one of the first to eighth aspects, wherein the driving device is provided with locking means for fixing the plurality of plate bodies at predetermined positions during transportation of the driving device. It is. According to such a configuration, a more excellent drive device can be obtained.
[0022]
That is, according to the locking means, it is possible to reliably reduce the adverse effects on the device due to the inclination and vibration when carrying the drive device, and to prevent troubles such as failure and damage of the device. It becomes possible.
[0023]
In the invention described in claim 10 of the present application, in any one of claims 1 to 9, the center of gravity of the plate body may pass a vertical line intersecting the shaft center of the plate body as the plate body rotates. It is the drive device of the structure formed so that it may not exist. According to such a configuration, a more excellent drive device can be obtained.
[0024]
That is, when the center of gravity of the plate body passes through the vertical line intersecting the shaft center, the center of gravity of the plate body changes from rising to lowering or from lowering to rising at that moment. There is a risk of subtle unevenness. In this respect, according to the present invention, the plate body rotates forward and backward within a range in which the center of gravity does not pass through the vertical line, and such inconvenience is surely avoided. It should be noted that the center of gravity of the plate body can be arbitrarily set by providing a weight with an appropriate weight at the main point of the plate body as required.
[0025]
The invention described in claim 11 of the present application is a drive device that includes a motor and a plate body, and rotates the plate body forward and backward by driving the motor, and the center of gravity of the plate body is the rotation of the plate body. Accordingly, the drive device is configured so as not to pass a vertical line intersecting the rotation axis of the plate body.
[0026]
That is, when the center of gravity of the plate body passes through a vertical line intersecting with the rotation axis of the plate body, the center of gravity of the plate body changes from rising to lowering or from lowering to rising at that moment. There is a possibility that subtle unevenness may occur due to the influence of. In this respect, according to the present invention, the plate body rotates forward and backward within a range in which the center of gravity does not pass through the vertical line, and such inconvenience is surely avoided. It should be noted that the center of gravity of the plate body can be arbitrarily set by providing a weight with an appropriate weight at the main point of the plate body as required.
[0027]
The invention described in claim 12 of the present application is a timepiece including the driving device according to any one of claims 1 to 11.
[0028]
That is, such a drive device can be used very suitably as a decoration for a timepiece.
[0029]
The invention described in claim 13 of the present application is the drive device according to claim 12, wherein the plurality of plate bodies protrude from the back side of the dial.
[0030]
That is, according to such a driving device, it is possible to obtain an interesting movement in which a plurality of plate bodies protrude from the back side of the dial.
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific examples of the present invention will be described in detail with reference to the drawings. The wall clock 1 of this example shown in FIG. 1 to FIG. 3 generates a notification sound such as a melody at a preset scheduled time and is driven by the driving device 100 to be almost hidden behind the dial 30. The first plate body 300a, the second plate body 300b, and the third plate body 300c (see FIG. 1) in a state of being in a state of being in a predetermined direction (see FIG. 2). The dial 30 and the driving device 100 are disposed inside the watch case 20, and the dial 30 and the plate bodies 300 a, 300 b, 300 c are made of glass or acrylic resin mounted on the front face of the watch case 20. It is visually observed through the transparent plate 21. A movement 40 for driving the pointer 41 is disposed at a predetermined part on the back side of the dial 30.
[0031]
The driving apparatus 100 of this example includes a motor 200 and a first plate body 300a, a second plate body 300b, and a third plate body 300c that are arranged to overlap each other. The plate bodies 300a, 300b, and 300c are configured to rotate forward and backward, respectively. The plate bodies 300a, 300b, and 300c are arranged in order from the dial plate 30 side, the first plate body 300a, the second plate body 300b, and the third plate body 300c. Each plate body 300a, 300b, 300c is configured to follow the motor 200 via a predetermined train wheel 210, and the rotation direction of each plate body 300a, 300b, 300c reverses the rotation of the motor 200. It is reversed by doing. The layout of the motor 200 and the train wheel 210 can be changed as appropriate. For example, as shown in FIG. 4, by devising the position of the motor 200, the watch case 20 can be thinned to some extent.
[0032]
Further, assuming that an excessive load is applied to such a drive mechanism due to some influence such as clogging due to dust or a slight misalignment of gears, there is an excess between the motor 200 and each plate body 300a, 300b, 300c. It is preferable to provide a slip mechanism for releasing a large load, and in this case, the motor 200 may be idled. The slip mechanism is provided on the output shaft of the motor 200, for example.
[0033]
Furthermore, a plurality of support plates 400a, 400b, and 400c are provided outside the plate bodies 300a, 300b, and 300c. Specifically, a first support plate 400a is provided on the front surface of the first plate body 300a, a second support plate 400b is provided on the front surface of the second plate body 300b, and a third surface is provided on the back surface of the third plate body 300c. A support plate 400c is provided. The first support plate 400a, the second support plate 400b, and the third support plate 400c are assembled at predetermined intervals by screwing the bosses 401 to appropriate portions thereof, and the first support plate 400a and the third support plate 400c. The plate 400c is fixed to the watch case 20 with screws.
[0034]
In the drawing, reference numeral 500 denotes a rod inserted through the first plate body 300a, the second plate body 300b, the third plate body 300c, the first support plate 400a, the second support plate 400b, and the third support plate 400c. is there. Holes through which the rod 500 is inserted are provided at the main points of the plate bodies 300a, 300b, 300c and the support plates 400a, 400b, 400c. However, the rod 500 is a locking means for fixing the plurality of plate bodies 300a, 300b, and 300c at predetermined positions when the wall clock 1 including the driving device 100 is transported. According to such a locking means, it is possible to reliably reduce the adverse effects on the apparatus due to the inclination and vibration during transportation. The driving device 100 is driven after the rod 500 is pulled out.
[0035]
In the case of this example, the plate bodies 300a, 300b, and 300c are made of the same type of members, and are arranged at intervals of 120 degrees around the rotation axis of the pointer 41. The configurations of the second plate body 300b and the second support plate 400b and the configurations of the third plate body 300c and the third support plate 400c are the configurations of the first plate body 300a and the first support plate 400a described below. Since they are common to those, their explanation is omitted.
[0036]
As shown in FIGS. 5 and 6, the first plate body 300 a includes a shaft 310 that rotatably supports the first plate body 300 a, and a first guide portion 320 that exhibits an arc centered on the shaft 310. In addition, an insertion portion 330 is provided for inserting shafts (not shown) that rotatably support the second plate body 300b and the third plate body 300c. The insertion portion 330 is a hole having a predetermined shape, and the first guide portion 320 is provided by forming an edge of the insertion portion 330 in an arc shape.
[0037]
The plurality of shafts that rotatably support the plate bodies 300a, 300b, and 300c are arranged at intervals of 120 degrees around the center of the dial plate 30, that is, the rotation axis of the pointer 41, and both ends thereof are Are supported by the first support plate 400a and the third support plate 400c, respectively. The insertion portion 330 is also inserted with a boss 401 provided at an appropriate portion of each support plate 400a, 400b, 400c.
[0038]
On the other hand, the first support plate 400a, which is outside the first plate body 300a, has a first pulley 410 that engages with the first guide part 320 and a pair that abuts the first plate body 300a and regulates its stop position. Stop position restricting means 420 is provided. The stop position restricting means 420 of this example is a pulley with a hook made of the same type of member as the first pulley 410, and by holding the first plate body 300a, the radial direction and thrust of the first plate body 300a. Directional movement is efficiently suppressed.
[0039]
In addition, as shown in FIG. 7, the 1st pulley 410 engaged with the 1st guide part 320 of the 1st plate body 300a is common with the stop position control means 420 of the 2nd plate body 300b and the 3rd plate body 300c. It has the structure which has a rotating shaft. That is, the rotation axes of the first pulleys 410 and the stop position restricting means 420 provided for the first plate body 300a, the second plate body 300b, and the third plate body 300c are centered on the rotation axis of the pointer 41. Are provided at intervals of 120 degrees.
[0040]
The first plate body 300a is normally in contact with one stop position restricting means 420 and hidden behind the dial 30 (see FIG. 5). When the scheduled time is reached, the motor 200 is driven to rotate around the shaft 310 and once stops when it comes into contact with the other stop position restricting means 420 (see FIG. 6). The rotation direction of the first plate body 300a is reversed when the first plate body 300a contacts the other stop position restricting means 420, and the first plate body 300a again contacts the one stop position restricting means 420. It is hidden behind the dial 30. The rotation operation of the first plate body 300a is very stable because the first guide part 320 and the first pulley 410 are always engaged.
[0041]
Further, in this example, the first support plate 400a is provided with a second guide portion 430 having an arc centered on the shaft 310, and the first plate body 300a is engaged with the second guide portion 430. A pulley 340 is provided. According to such a configuration, the rotation operation of the first plate body 300a can be further stabilized.
[0042]
In addition, about the movement of the 1st plate body 300a, when the stability can fully be ensured, one set of the 1st guide part 320 and the 1st pulley 410, the 2nd guide part 430, and the 2nd pulley 340 Can be omitted.
[0043]
Further, in the case of this example, the first plate body 300a stopped in contact with the stop position restricting means 420 is configured to be urged toward the stop position restricting means 420 by the urging means.
[0044]
That is, as shown in FIGS. 8 to 10, the driving device 100 of this example includes a groove 302 provided in the first plate body 300 a and a driving pin 211 that engages with the groove 302 and rotates as the motor 200 is driven. And a coil spring 600 which is an elastic body mounted on the shaft 310 of the first plate body 300a. The biasing means described above includes the coil spring 600 sandwiched between the first plate body 300a and the drive pin 211. The first plate body 300a contacts the stop position restricting means 420, and the drive pin 211 is The coil spring 600 is elastically deformed while moving along the groove 302, and is biased toward the stop position restricting means 420 side. The drive pin 211 is provided on the rearmost gear of the train wheel 210, and a fixed pin 301 that supports the coil spring 600 is provided at a main point of the first plate body 300a. The both ends of the coil spring 600 are in contact with the drive pin 211 and the fixed pin 301, respectively, and are sandwiched between them.
[0045]
According to such a configuration, when the first plate body 300a approaches the dial plate 30, the end of the groove 302 is directly pressed by the drive pin 211 and rotates. On the other hand, when hidden behind the dial 30, the motor 200 rotates while being pushed by the drive pin 211 via the coil spring 600, and the motor 200 to some extent immediately after the first plate body 300 a contacts the stop position restricting means 420. Stopped after overrun. When the motor 200 overruns, the drive pin 211 moves inside the groove 302 and elastic force is accumulated in the coil spring 600 (see FIG. 10). The elastic force accumulated in the coil spring 600 becomes a biasing force that biases the first plate body 300a toward the stop position restricting means 420. Accordingly, the movement of the first plate body 300a to leave the stop position restricting means 420 due to its own weight or the like is suppressed by the elastic force of the coil spring 600.
[0046]
Further, as shown in FIGS. 11 and 12, the third plate body 300c and the third support plate 400c are provided with switch means 700 that switches according to the position of the third plate body 300c. Control is performed according to the switch means 700. In the illustrated switch means 700, a lever of a micro switch provided on one of the third plate 300c and the third support plate 400c is operated in accordance with a rib provided on the other of them. Also, a plurality of microswitches and levers are provided, and the position of the third plate body 300c can be detected by the ON / OFF pattern of the plurality of microswitches. The motor 200 of this example is controlled by a microcomputer using the switch means 700, and when the scheduled time arrives, the third plate body 300c is controlled to reciprocate a plurality of times and stop. The first plate body 300a and the second plate body 300b operate at the same timing as the third plate body 300c. According to such a configuration, the motor 200 can be controlled efficiently.
[0047]
In the initial state when the power of the timepiece 1 is turned on, if the plate bodies 300a, 300b, and 300c are already in the positions where they are pushed out from the back side of the dial plate 30, the switch means 700 detects this and detects the motor. By driving 200, each plate body 300a, 300b, 300c is moved to a stop position on the back side of the dial plate 30.
[0048]
Further, as shown in FIGS. 11 and 12, a weight 800 is provided at a main point of the third plate body 300c. The center of gravity G _{1 + 2} of the third plate body 300c including the weight 800 does not pass through the vertical line L that intersects the center of the shaft 310 (that is, the rotation axis) as the third plate body 300c rotates. Is set.
[0049]
Especially in the case of the third plate member 300c, but the center of gravity G ₁ of the component is to get through the straight line L, according to the present embodiment, addition of the center of gravity G ₂ of the weight center of gravity G ₁ components Thus, the total center of gravity G _{1 + 2 of the two} is set so as not to pass the vertical line L. According to such a configuration, it is possible to avoid a situation in which subtle unevenness occurs in the movement of the third plate body 300c due to the influence of backlash or the like.
[0050]
As described above, this example is a drive device that can obtain a novel and very interesting movement, and can be used very suitably as a decoration for a watch. Of course, the configuration of the driving device of this example can also be applied to devices other than a watch (for example, a signboard or a display of a show window).
[0051]
In the drive device of this example, a plurality of plate bodies are hidden from the back side of the dial plate after coming out from the back side of the dial plate at a predetermined time. It is also possible to configure the body so that it comes out after it is hidden behind the dial. In this case, it is preferable that a decorative object is arranged in the back of the plate body as viewed from the front of the dial, and the decorative object is exposed at a predetermined time.
[0052]
【The invention's effect】
As described above, according to the configuration of the present invention, it is possible to obtain an excellent drive device used for decoration of a watch or the like.
[Brief description of the drawings]
FIG. 1 is a front view showing a timepiece according to a specific example of the present invention.
FIG. 2 is a front view showing a timepiece according to a specific example of the present invention.
FIG. 3 is a perspective sectional view showing a side surface of a timepiece according to a specific example of the present invention.
FIG. 4 is a perspective sectional view showing a side surface of a timepiece according to a specific example of the present invention.
FIG. 5 is an explanatory diagram of a first plate body according to a specific example of the present invention.
FIG. 6 is an explanatory diagram of a first plate body according to a specific example of the present invention.
FIG. 7 is an explanatory diagram of a first pulley and stop position restricting means according to a specific example of the present invention.
FIG. 8 is an explanatory diagram showing a side surface of a main part of a drive device according to a specific example of the present invention.
FIG. 9 is an explanatory diagram showing a front view of a main part of a drive device according to a specific example of the present invention.
FIG. 10 is an explanatory diagram showing a front view of a main part of a drive device according to a specific example of the present invention.
FIG. 11 is an explanatory diagram of a third plate body according to a specific example of the present invention.
FIG. 12 is an explanatory diagram of a third plate body according to a specific example of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wall clock 20 Clock case 21 Transparent plate 30 Dial 40 Movement 41 Pointer 100 Driving device 200 Motor 210 Wheel train 211 Driving pin 300a First plate body 300b Second plate body 300c Third plate body 301 Fixing pin 302 Groove portion 310 Shaft 320 First guide portion 330 Insertion portion 340 Second pulley 400a First support plate 400b Second support plate 400c Third support plate 401 Boss 410 First pulley 420 Stop position restricting means 430 Second guide portion 500 Rod 600 Coil spring 700 Switch means 800 spindles

Claims (13)

A driving device that includes a motor and a plurality of plate bodies arranged to overlap each other, and each of the plurality of plate bodies is rotated forward and backward by driving of the motor;
The plate body is provided with a shaft that rotatably supports the plate body, and an insertion portion through which a shaft that rotatably supports the other plate body is inserted,
Furthermore, a guide unit is provided on one of the plate body and the outside thereof, and a pulley engaging with the guide unit is provided on the other side of the plate body and the outside thereof. The drive device according to claim 1, wherein the plate body is provided with the guide portion, and the guide portion is an edge of the insertion portion. The second guide portion is provided on the other of the plate body and the outside thereof, and a second pulley is provided on one of the plate body and the outside thereof to engage with the second guide portion. 3. The drive device according to 1 or 2. 4. The driving apparatus according to claim 1, wherein stop position restricting means is provided outside the plate body so as to abut against the plate body and restrict the stop position thereof. The drive device according to claim 4, wherein the stop position regulating means is another pulley that holds the plate body. 6. The driving device according to claim 4, further comprising an urging unit that urges the plate body that has stopped in contact with the stop position regulating unit toward the stop position regulating unit. A groove portion provided in the plate body, a drive pin that engages with the groove portion and rotates as the motor is driven, and a coil spring attached to the shaft of the plate body,
The biasing means comprises the coil spring sandwiched between the plate body and the drive pin,
The plate body abuts on the stop position restricting means, and the drive pin is biased toward the stop position restricting means by elastically deforming the elastic body while moving in the groove. The drive device according to claim 6. 8. The driving apparatus according to claim 1, further comprising switch means for switching according to the position of the plate body, and controlling the motor according to the switch means. 9. The driving apparatus according to claim 1, further comprising a lock unit that fixes the plurality of plate bodies at predetermined positions when the driving apparatus is transported. The center of gravity of the plate body is set so as not to pass a vertical line intersecting the shaft center of the plate body as the plate body rotates. Drive device. A driving device that includes a motor and a plate body, and that rotates the plate body forward and backward by driving the motor;
A driving apparatus, wherein the center of gravity of the plate body is set so as not to pass a vertical line intersecting with the rotation axis of the plate body as the plate body rotates. A timepiece comprising the driving device according to claim 1. The timepiece according to claim 12, wherein the plurality of plate bodies protrude from a back side of the dial.

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