JPH0612984U - Watch movement device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a movement device of a timepiece that can be decorated by emphasizing the movement of the timepiece. [Structure] An oscillating body 4 and a sleeve 5 are inserted into a shaft 2 of a timepiece unit. Further, a short hand, a long hand and a second hand of a clock are attached to the shaft 2. Further, a permanent magnet 21 is attached to the lower end of the arm 17 of the rocking body 4. The electromagnetic induction unit 3 periodically reverses the polarity of the coil 22. As a result, the coil 22 and the arm 17
The permanent magnet 21 at the lower end of the arm attracts or repels, and as a result, the lower end of the arm 17 swings left and right, and the swinging body 4 swings.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a movement device for decorating a timepiece.

[0002]

[Prior art]

 In recent years, inexpensive electric timepieces have been on the market with the progress of manufacturing technology. The reason why this electronic watch is cheap is that the main parts for stepping the hands of the watch are unitized and shared, and various features are given only to the appearance.

The unit of this timepiece uses a battery as a power source, generates a clock signal, periodically rotates a motor by the clock signal, and advances the hands of the timepiece by the motor. . However, this unit has minimal functions due to cost reduction due to mass production.

[0004]

[Problems to be solved by the device]

 By the way, when using the above-mentioned unit to manufacture a watch, it is possible to realize a reduction in cost, but in order to have the characteristics of the product, the appearance must be elaborated. It was However, no matter how the appearance was modified, it was not possible to emphasize the movement of the clock that ticks the time, and only products with a strong static impression could be made.

Therefore, an object of the present invention is to obtain a timepiece movement device that can be decorated by emphasizing the movement of the timepiece.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the present invention, a oscillating body mounted so as to be capable of oscillating around an axis that rotatably supports a hand of a timepiece, and a oscillating body fixed to a portion distant from the axis of the hand. The permanent magnet and the timepiece unit that advances the hands are separate bodies, and have an electromagnet disposed near the permanent magnet, and the polarity of this electromagnet is reversed periodically. And an electromagnetic induction means.

[0007]

[Action]

 According to this invention, the electromagnet is arranged in the vicinity of the permanent magnet fixed to the oscillator, and the electromagnetic induction means periodically reverses the polarity of the electromagnet. With the reversal of the polarity of the electromagnet, the electromagnet and the permanent magnet attract each other or repel each other, which causes the oscillator to oscillate.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an exploded assembly view of a timepiece to which an embodiment of the movement device according to the present invention is applied, and FIG. 2 shows an appearance of the timepiece.

As shown in FIG. 1, a shaft 2 projects from the center of the front surface of the timepiece body 1. The shaft 2 is composed of a plurality of concentric shafts, as will be described later, and is derived from a timepiece unit mounted on the back side of the timepiece main body 1. An electromagnetic induction unit 3 is attached to the lower front side of the watch body 1.

The rocking body 4 and the sleeve 5 are inserted into the shaft 2 of the timepiece body 1. Furthermore, a base 7 is screwed into the shaft 2 with a disc 6 interposed, and after this, a minute hand 8, a long hand 9 and a second hand 10 of a clock are attached. Finally, the watch cover 11 is attached, resulting in the appearance shown in FIG.

3 and 4 show a sectional structure around the axis 2 of this timepiece. FIG. 3 shows a cross section when viewed from the side, and FIG. 4 shows a cross section when viewed from the front.

As is apparent from these figures, a timepiece unit 12 is arranged on the back side of the timepiece main body 1, and a shaft 2 led out from the timepiece unit 12 penetrates through the timepiece main body 1 to the front side. It is protruding.

The base 7 is screwed into the shaft 2, and the sleeve 5 and the disk 6 are sandwiched between the base 7 and the watch body 1, whereby the sleeve 5 and the disk 6 are fixed. The shaft 2 has a concentric quadruple structure. The outermost side is a cylindrical shaft, the inner side of which is penetrated by a cylindrical time axis, and the inner side of the time axis is a cylindrical shunt axis. Penetrates, and the second axis penetrates inside this minute axis. A short hand 8 is attached to the time axis, a long hand 9 is attached to the minute axis, and a second hand 10 is attached to the second axis. The clock unit 12 rotates the time axis, the minute axis, and the second axis at appropriate speeds, respectively, whereby the minute hand 8, the minute hand 9, and the second axis 10 rotate respectively, and the hour, minute, and Every second and second.

A hole 13 is formed in the center of the oscillating body 4, and the sleeve 5 penetrates the hole 13. A pair of claws 14 are formed on the peripheral edge of the hole 13 of the rocking body 4, and one claw 15 is formed on the peripheral wall of the sleeve 5. The claws 15 of the sleeve 5 are fitted between the claws 14 of the rocking body 4, and here the rocking body 4 is rockably supported. Further, since the claws 15 of the sleeve 5 are sandwiched between the claws 14 of the rocking body 4, the rocking range of the rocking body 4 is limited. Further, a ring-shaped weight 16 is fixed around the hole 13 of the oscillating body 4, and the weight 16 gives an appropriate inertia in the rotational direction to the oscillating body 4. Further, the rocking body 4 has four arms 17, 18, 19, 20 extending vertically and horizontally. The permanent magnet 21 is attached to the back side of the lower end of the arm 17 extending below these arms.

On the other hand, the electromagnetic induction section 3 has a coil 22 built therein. The coil 22 is located on the lower side of the timepiece body 1 and faces the permanent magnet 21 at the lower end of the arm 17 when the arm 17 of the rocking body 3 hangs down.

FIG. 5 shows a circuit configuration of the electromagnetic induction section 3. As shown in this figure, the electromagnetic induction unit 3 is a low-frequency oscillation circuit that operates using the battery 23 as a DC power source, and the coil 22 is one of the constituent elements. When this oscillation circuit oscillates at a predetermined low frequency, an alternating current flows through the coil 22 accordingly. At this time, since the polarity of the coil 22 is repeatedly reversed, the coil 22 and the permanent magnet 21 at the lower end of the arm 17 attract each other or repel each other. As a result, the lower end of the arm 17 swings to the left and right, and the swinging body 4 swings.

Needless to say, the oscillating body is not limited to the oscillating body shown in the above-mentioned embodiment, and various shapes can be applied.

[0019]

【effect】

 As described above, according to the present invention, the permanent magnet is fixed to the oscillator, and the polarity of the electromagnet is periodically inverted in the vicinity of the permanent magnet to cause the oscillator to oscillate. By incorporating such an oscillating body into a timepiece, it is possible to make a decoration that emphasizes the movement of the timepiece, and it is possible to provide an impression that is different from conventional products.

[Brief description of drawings]

FIG. 1 is an exploded view showing a timepiece to which an embodiment of a movement device according to the present invention is applied.

FIG. 2 is a plan view showing a timepiece of this embodiment.

FIG. 3 is a sectional view showing the timepiece of this embodiment as viewed from the side.

FIG. 4 is a sectional view showing the timepiece of this embodiment as seen from the front.

FIG. 5 is a circuit diagram showing an electromagnetic induction unit in the timepiece of this embodiment.

[Explanation of symbols]

 1 watch body 2 axis 3 electromagnetic induction part 4 rocker 5 sleeve 6 disc 7 base 8 short hand 9 long hand 10 second hand 12 watch unit 16 weight 17, 18, 19, 20 arm 21 permanent magnet

Claims (1)

[Scope of utility model registration request] 1. A timepiece provided with a timepiece unit which pivotally supports a hand and ticks the time by rotating the hand, and a swinging body attached so as to be swingable about an axis around which the hand is pivotally supported, The permanent magnet fixed to the portion of the oscillator that is separated from the axis of the hand, and an electromagnet that is separate from the timepiece unit and is disposed near the permanent magnet, and the polarity of the electromagnet A timepiece movement device comprising an electromagnetic induction means for periodically reversing the time.