JP3626855B2 - Decorative hook - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a decorative escape gear device for directly driving an escape wheel with an ankle.
[0002]
[Prior art]
As a conventional timepiece for driving the hands by the rotation of the escape wheel, there is a timepiece disclosed in Japanese Utility Model Publication No. 53-159373. In this watch, the vibration lever is moved by swinging the pendulum, and the escape wheel is rotated by the movement of the vibration lever to rotate the escape wheel.
[0003]
Further, as a conventional ornamental escape device, there is one disclosed in JP-A-9-96685. In this apparatus, the swing mechanism and the pendulum are connected by a connecting rod, and the escape wheel is rotated by the pendulum swinging through the connecting rod.
[0004]
[Problems to be solved by the invention]
In the above prior art, it is necessary to arrange a vibration lever for swinging the ankle body side by side with the ankle body, and to arrange a swing mechanism for swinging the pendulum side by side behind the pendulum. For this reason, the space and thickness which accommodates mechanisms, such as a vibration lever which drives an escape wheel, and a connecting rod, increased, and there was a subject that size reduction and thickness reduction were difficult.
[0005]
Further, in the above prior art, it is necessary to connect the ankle body and the pendulum with a vibration lever, or connect the pendulum and the swing mechanism with a connecting rod. For this reason, the positional relationship between the ankle body or the pendulum and the pendulum or the swinging mechanism that drives the ankle body or the pendulum cannot be easily changed, which makes it more difficult to reduce the size and thickness.
[0006]
Furthermore, when the pendulum and the swing mechanism in the prior art are connected by a connecting rod, it is necessary to provide a through hole for passing the connecting rod in the substrate or the like, which deteriorates the appearance and is not easy to assemble. was there.
[0007]
Furthermore, in the prior art, the pendulum and the swinging mechanism are swung by exciting the coil. However, as described above, the circuit for driving the coil is low because of the low degree of freedom in arranging the swinging mechanism and the like. Had to be placed in a vacant space, and then the cord had to be routed and connected from there to the coil.
[0008]
In addition, the ankle body and pendulum in the prior art have an initial position and a stop position that are not determined, have poor accuracy at the start, and need to be provided with a stopper or the like in order to prevent rattling during transport.
[0009]
The present invention has been made in view of the above-described problems of the prior art, and can be easily reduced in size and thickness, has good appearance, is easy to assemble, has no fear of disconnection, and the ankle is placed at an appropriate stop position. It is an object of the present invention to provide an ornamental escape device that can be stopped.
[0010]
[Means for Solving the Problems]
The decorative escape gear device of the present invention includes an escape wheel that is pivotally supported and a pivot wheel that is pivotably supported , engages with the escape wheel at one end, and rotates the escape wheel by swinging. An ankle having an engaging portion and having a driving magnet fixed to the other end , and a driving device that swings the ankle by applying a magnetic force to the driving magnet of the ankle. .
[0011]
Further, the drive device in the ornamental escapement device includes a stator disposed with a pair of magnetic pole portions facing the drive magnet of the ankle, a coil wound around the stator, and a current supplied to the coil. And a drive circuit.
[0012]
Furthermore, the driving magnet of the ankle and the driving device in this ornamental escape device are arranged to face each other with a shielding plate interposed therebetween.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
In the decorative escape gear device of the present invention, the train wheel for driving the pointer is rotationally driven by the escape wheel, the escape wheel is rotated by the swing of the ankle, and the ankle is swinged by the magnetic action of the drive device.
[0014]
That is, the escape wheel has a large number of notches on its outer periphery. This notch is engaged with an engaging part consisting of an engaging pin provided at one end of the ankle. When the ankle swings, the engaging part presses the slope of the edge of the notch. Then rotate the escape wheel. A drive magnet is attached to the other end of the ankle. The stator of the drive unit is arranged at a position opposite to the drive magnet of this ankle, and when stopped, the drive magnet attracts the unmagnetized stator and stops at the proper stop position. When the stator is magnetized, it is driven by its magnetic action. The ankle is swung by applying force by attracting and repelling the magnet at regular intervals.
[0015]
As described above, in the present invention, the ankle is directly driven by the driving device, and the driving device for swinging the ankle can be arranged away from the swinging member as long as the magnetic action is within the range. Therefore, it is easy to reduce the size and thickness.
[0016]
【Example】
FIG. 1 is a front view showing a decorative escape device according to one embodiment of the present invention, and FIG. 2 is a sectional view thereof. 1 and 2, reference numeral 2 denotes an escape wheel, which is pivotally supported by a lower plate 4 and a receiving plate 6 opposed thereto. A large number of notches 2a are formed on the outer periphery of the escape wheel 2 so that the escape wheel rotates in a certain direction by engaging with an ankle described later. The detailed shape of the notch 2a will be described later. Further, the escape wheel 2 is provided with a pinion gear 2 d coaxially and integrally, and the pinion gear 2 d meshes with the third wheel 12 of the wheel train 10 that drives the pointer 8.
[0017]
An ankle 14 is pivotally supported by the lower plate 4 and the receiving plate 6 so as to be swingable. The ankle 14 in the present embodiment has a substantially Y shape, and engaging portions 14a and 14b made up of engaging pins erected in the axial direction are formed at one end divided into two forks. A driving magnet 14c is fixed to the other end. The ankle in this embodiment has a center of gravity below the center of rotation and is in a swingable state.
[0018]
Reference numeral 16 denotes a drive device for swinging the ankle 14. This drive device 16 is inverted to the coil 20 every second like the time circuit of the stator 18 having a U-shape, the coil 20 wound around one magnetic pole part side of the stator 18 and the time circuit of the step hand movement. And a drive circuit 22 for supplying a pulsed current. The driving device 16 in this embodiment is fixed together with a case 24 to a boss 4a that protrudes on the back side of the lower plate 4 so that the magnetic pole portions 18a and 18b of the stator 18 face the driving magnet 14c of the ankle 14. In this embodiment, a part of the lower plate 4 is used as a shielding plate, and the driving device 16 is hidden behind the lower plate 4 so that it cannot be seen from the front.
[0019]
Moreover, the engagement state of the escape wheel 2 and the ankle 14 in the decorative escape gear having the above-described configuration will be described with reference to FIG. The notch portion 2a of the escape wheel 2 is formed with an inclined surface 2b that is inclined so as to be counter to the rotational direction, and a bottom portion 2c is formed in a U shape so as to fit the engaging portions 14a and 14b of the ankle 14. Is formed. The engaging portions 14a and 14b of the ankle 14 are engaged with the slope 2b of the notch 2a when the ankle 14 is swung, and the escape wheel 2 is rotated by pressing the slope 2b along the surface. It is comprised so that it may fit in the bottom part 2c of the notch part 2a. The notch 2a of the escape wheel & pinion 2 in this embodiment is formed so as to divide the outer circumference into 30 equal parts, and is set to rotate once per minute driven by the ankle 14.
[0020]
Next, the operation of the decorative escape device having the above configuration will be described. First, since the stator 18 is made of a soft magnetic material, the ankle 14 attracts one side of the magnetic pole portions 18a and 18b of the stator 18 in a stopped state where the coil 20 is not energized. For example, as shown in FIG. 3, it is stopped in a tilted state. At this time, one of the engaging portions 14a, 14b of the ankle 14 is locked to the bottom 2c of the notch 2a of the escape wheel 2 and the other is located away from the notch 2a.
[0021]
When a current flows from the drive circuit 22 to the coil 20 in the stopped state as described above, the magnetic pole portions 18a and 18b of the stator 18 are magnetized. At this time, if the magnetic pole portions 18a and 18b are respectively magnetized to the S pole and the N pole, and the side facing the magnetic pole portions 18a and 18b of the drive magnet 14c of the ankle 14 is set to the N pole, FIG. The ankle 14 in the state shown in FIG. 3 rotates in the clockwise direction in FIG. 3 when the drive magnet 14c repels the magnetic pole portion 18b and is attracted to the magnetic pole portion 18a. At this time, the engaging portion 14a of the ankle 14 comes into contact with the inclined surface 2b of the notch portion 2a of the escape wheel 2 and is pressed along the inclined surface 2b to rotate the escape wheel 2 clockwise in FIG. When the escape wheel & pinion 2 is rotated by one pitch, the engaging portion 14a is locked to the bottom portion 2c of the notch portion 2a and stopped. Even if the current supply to the coil 20 is stopped while the ankle 14 is rotating, the ankle 14 continues to rotate due to inertia, and the operation is continued until the drive magnet 14c is attracted to the magnetic pole portion 18a and stopped. . At this time, the engaging portion 14b of the ankle 14 is disengaged from the notch 2a of the escape wheel 2.
[0022]
Thereafter, the direction of the current supplied to the coil 20 changes, and when the magnetic pole portions 18a and 18b of the stator 18 are magnetized to the N pole and the S pole, respectively, the driving magnet 14c of the ankle 14 repels the magnetic pole portion 18a and the magnetic pole portion 18b. Sucked into. For this reason, the ankle 14 rotates counterclockwise in FIG. 3, and this time the engaging portion 14b presses the slope 2b of the notch 2a of the escape wheel 2 along its surface to rotate the escape wheel 2 clockwise. Let The rotation of the pallet fork 14 is continued with inertia in the same manner as described above, and stops when the drive magnet 14c is attracted to the magnetic pole portion 18b and the engaging portion 14b is locked to the bottom portion 2c of the notch portion 2a.
[0023]
As described above, the escape wheel 2 is intermittently swung, whereby the escape wheel & pinion 2 is rotated, and the wheel train 10 meshing with the wheel is rotated to move the pointer 8.
[0024]
【The invention's effect】
According to the present invention, since the escape wheel is driven by driving the magnet provided on the ankle by the magnetic action of the driving device, a mechanism for mechanically coupling to the ankle for driving the ankle is not required, It can be easily reduced in size and thickness.
[0025]
Further, since the ankle is oscillated by the magnetic action of the driving device, the position of the driving device can be freely changed within the range in which the magnetic action is applied. Therefore, not only can the size and thickness be reduced, but also design changes can be easily accommodated.
[0026]
Furthermore, since there is no need to mechanically connect the ankle and the driving device, it is not necessary to provide a through hole in the lower plate, and the appearance quality can be improved. In particular, by completely hiding the drive device, it is possible to attract attention by the wonder of how the ankle and the ganki car are driven, and it is also possible to increase the fun.
[0027]
Furthermore, as described above, the degree of freedom of the arrangement of the driving device is high, and since it can be handled and arranged as a driving device in which the stator, the coil and the circuit are combined into one, the occurrence of defects such as disconnection can be prevented. it can.
[0028]
Even when the ankle is stopped, the ankle can be stopped at an appropriate position by attracting one of the magnetic pole portions of the stator that is not magnetized, so that the position of the ankle can always be regulated at the appropriate position. In particular, since the stator drives the ankle by its magnetic action, the position of the ankle can be regulated without increasing the number of parts by providing a stopper or the like.
[Brief description of the drawings]
FIG. 1 is a front view showing a decorative escape device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the decorative gangue shown in FIG.
3 is an enlarged view showing an engagement state between an escape wheel and ankle shown in FIG. 1. FIG.
[Explanation of symbols]
2 escape wheel 2a notch 2b slope 2c bottom 14 ankles 14a, 14b engaging portion 14c driving magnet 16 driving device 18 stator 20 coil 22 driving circuit

Claims (3)

An escape wheel that is pivotally supported,
An ankle that is pivotally supported and has an engaging portion that engages the escape wheel at one end and rotates the escape wheel by swinging, and a drive magnet is fixed to the other end. When,
A drive device that swings the ankle by applying a force of magnetic action to the drive magnet of the ankle;
An ornamental escape device characterized by comprising. An escape wheel that is pivotally supported,
An ankle that is pivotally supported, has a drive magnet attached thereto, and has an engaging portion that engages with the escape wheel and rotates the escape wheel by swinging;
A drive device that swings the ankle by applying a magnetic force to the drive magnet of the ankle,
Said drive device includes a stator in which a pair of magnetic pole portions are disposed so as to face the driving magnet of the ankle, a coil wound on the stator, to consist of a driving circuit for supplying a current to the coil decorated on the escape apparatus shall be the features a. An escape wheel that is pivotally supported,
An ankle that is pivotally supported, has a drive magnet attached thereto, and has an engaging portion that engages with the escape wheel and rotates the escape wheel by swinging;
A drive device that swings the ankle by applying a magnetic force to the drive magnet of the ankle,
Decorated on escapement device the drive device and the drive magnet of the ankle is you, characterized in that disposed opposite across the shielding plate.

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