JPH08246U - Electronic clock - Google Patents

Abstract

(57) [Summary] [Structure] At least a rechargeable power source and external operation member
, A coil of a coil wire wound in a rod shape, a stator,
Stepping motor for driving a time display member including a motor
And a wheel for transmitting the movement of the rotor to the time display member.
Rows, coils and stays in which a coil wire is wound in a rod shape
And an AC power generation means consisting of a rotor,
In an electronic timepiece comprising electric means, the step mode
Direction of the coil of the motor and the axis of the coil of the AC generator
The directions are arranged substantially at right angles to the plane. [Effect] Internal magnetic flux generated from AC power generation means and external exchange
Mode of electro-mechanical conversion means for timepieces
It is possible to minimize the adverse effect on the performance of the computer.
Providing electronic timepieces that do not have problems such as stoppage of hand movements and delays
It is possible.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a correlation structure of an electronic timepiece having an AC power generation means and an electro-mechanical conversion means.

[0002]

[Outline of the device]

 The present invention relates to an electronic timepiece having a rechargeable power source, an AC power generation means, and an electro-mechanical conversion means, wherein at least one coil of the AC power generation means has the axial direction of the electro-mechanical conversion means. By arranging at least one coil in a plane substantially at right angles to the axial direction, the adverse effect of the magnetism generated by the AC power generating means on the timepiece function is minimized.

[0003]

[Prior art]

 At present, there has been devised an electronic timepiece that performs external charging or internal charging by using an AC power generation means characterized by no battery replacement, and displays time with energy obtained from this. As a schematic structure of this embodiment, a magnetic circuit composed of a coil is formed in the alternating current power generation means, and an induction voltage generated by this magnetic circuit is used as electric energy to drive a well-known step motor to display the time.

[0004]

[Problems to be solved by the device]

 However, when the mechanism using the AC power generation means as described above is actually incorporated in an electronic timepiece, the following problems occur. Originally, a timepiece using a well-known step motor is easily affected by a magnetic field from the outside, such as stoppage or advance / retardation of hand movement, and therefore some measures have been taken to withstand it to some extent. . One of the typical methods is to arrange a magnetic shield member around the step motor so as to prevent the external magnetic field from passing through the motor.

In this case, various shapes of the magnetic shield member have been devised. Further, in recent years, the performance of motors has been remarkably improved so that it can withstand without a magnetic shield member, and this type is increasing. However, at least two coils are present in the same movement in the platform of the mechanism using the AC power generating means, but in the AC power generating means, at least energy more than that required by the clock motor is required. Since it has to be supplied, it tends to require a larger number of magnetic fluxes than a timepiece motor, and a large magnetic field fills the movement especially during power generation. In the past, the purpose was to be effective against a magnetic field from the outside, so in the conventional anti-magnetic structure, the internal magnetic field caused the watch motor to stop or lead, and to generate electric power from the external magnetic field. In this case, the effect may be reduced or lost depending on the magnetic resistance structure. Further, in the electronic timepieces, which tend to be smaller and thinner, the magnetic resistance structure is obliged to be abolished, and it may be impossible to achieve the purpose of magnetic resistance.

Therefore, the present invention solves such a problem, and its purpose is to provide a timepiece motor for electric power generation which is considered to be indispensable for a timepiece having an AC power generating means in the movement as described above. The present invention is to provide an electronic timepiece that adopts a magnetic resistance structure that eliminates the adverse effects of, does not require battery replacement, and is compatible with downsizing and thinning.

[0007]

[Means for Solving the Problems]

 The electronic timepiece of the present invention has a rechargeable power source, an AC power generation means, an electronic circuit, and an electromechanical conversion means for driving a time display member by an electric signal from the electronic circuit. In an electronic timepiece capable of power generation and power generation by an external magnetic field, the AC power generation means and the electromechanical conversion means each include at least one coil, and the axial direction of the coil included in the AC power generation means and the electricity -The axial direction of the coil of the mechanical conversion means is arranged substantially at right angles to the plane, and the AC power generation means, the electro-mechanical conversion means and the power source are arranged so as not to overlap in the plane. It is characterized by

[0008]

According to the above configuration of the present invention, the axial direction of at least one coil included in the AC power generation unit and the axial direction of at least one coil included in the electromechanical conversion unit are substantially planar. Since it is arranged at a right angle position, the magnetic flux generated from the AC power generation means hardly flows into the electromechanical conversion mechanism due to the known principle of electromagnetic induction action, and even if it flows, only a small magnetic flux flows.

[0009]

[Embodiment of device]

 FIG. 1 is a diagram showing a planar layout of an embodiment of an electronic timepiece according to the present invention. An example will be described below.

Reference numeral 1 is a rechargeable power source such as a secondary battery or a large-capacity capacitor, 2 is a stator which constitutes electro-mechanical conversion means for a timepiece, 3 is also a coil block, 4 is the same rotor, 5 Is a power generation stator which constitutes an AC power generation means, 6 is a power generation coil block, and 7 is a power generation rotor which is also composed of a magnet. 8 is a train wheel portion composed of various gear members, 9 is a machine frame which is the base of the watch body, and 10 is a normal carrying state, a calendar correction state or a time correction state by the operation of the external operation member 11. Indicates the switching unit to be switched. The electro-mechanical conversion means for the timepiece has a well-known motor structure and is linked to the instruction display member. The power generation rotor 7 of the AC power generation means has a pinion similar to, for example, the timepiece rotor 4, is engaged with the transmission train wheel group of the train wheel portion 8, and is a well-known rotation that is rotated by movement of the arm and heavy weight. It is transmitted to the horn (not shown) or to the external operating member 11.

The switching unit 10 is located on the external operation member 11 side, and the power source 1, the AC power generation unit, and the electric-mechanical conversion unit are arranged so as to surround the train wheel unit 8 from three directions, and each of them is arranged. It does not intersect in a plane.

Next, the AC power generation means will be described. When the external operating member 11 or a rotary weight (not shown) is rotated, the power is transmitted by the transmission train wheel of the train wheel unit 8 or the speed is transmitted to rotate the rotor 7 for power generation, and the relative movement of the magnet and the coil. Induces an induced voltage. In addition to this, it is a well-known principle that an induced voltage is induced in the same manner as described above by applying an alternating magnetic field from outside the timepiece in a direction substantially parallel to the axial direction of the coil block 6 for power generation. The induced voltage induced here is introduced into an electronic circuit, rectified by rectifying means, and the power source 1 is charged.

The path of the magnetic flux particularly generated during the AC power generation will be described. Ideally, all the magnetic flux generated by the power generation rotor 7 originally passes through the magnetic circuit composed of the power generation coil block 6 and the power generation stator 5, but in reality, a considerable leakage magnetic flux occurs. Since this leakage magnetic flux tries to pass through a substance having a high magnetic permeability, it becomes easy to flow not only to the motor parts but also to the switching unit 10 having many steel members and the power source 1 using a stainless steel material. In this case, although the influence on the switching unit 10 and the power source 1 is extremely small, the leakage magnetic flux passes through the electromechanical conversion means for the timepiece, so that it affects the motor performance and causes a time error. To prevent this, it is effective to arrange the generator and motor as far apart as possible, but it is practically difficult because there is not enough space.

However, in the case of FIG. 1, since the coils are at right angles, only one part is required to be in close proximity, and the influence of the magnetic field generated from the power generation rotor 7 can be reduced. This is because one end of the timepiece coil is close to the generator rotor 7, but the other end is far away, and it is difficult to form a magnetic path that passes through the axis of the coil that most affects the motor.

Further, it can be said that power generation by an external alternating magnetic field generally produces a larger magnetic field than internal power generation. This is because the magnetic field from the outside is guided to the power generation coil via the air, so it is less efficient than internal power generation that forms a magnetic path with high permeability, and a magnetic field corresponding to that is required. Because it does.

Therefore, the power generation by the external alternating magnetic field has a higher influence on the motor, but since the coils are perpendicular to each other, the magnetic field passing through the watch coil is the strongest against the magnetic field by the motor. Since it is perpendicular to the so-called coil axis, it is possible to prevent adverse effects such as stop and lead.

Further, in order to apply an external alternating magnetic field to the timepiece body, a standard for determining the direction of the timepiece body is required. There is an external operating member as an easy-to-understand guide, but since the power generation coil is parallel or perpendicular to the axis of the external operating member in this proposal, it suffices to apply a magnetic field parallel or perpendicular to the external operating member, and the work is easy to understand. It should be noted that the same effect can be obtained if the magneto coils are not perfectly parallel or rectangular and the general direction is determined.

[0018]

[Effect of device]

 As described above, according to the present invention, the axial direction of the coil provided with at least one of the AC power generation means and the axial direction of the coil provided with at least one of the electromechanical conversion means are substantially perpendicular to each other. By arranging them, the magnetic fluxes generated by the internal magnetic flux and the external alternating magnetic field generated by the AC power generation means affect the driving of the motor of the electro-mechanical conversion means for timepieces, stop and advance of the step movement, and adversely affect the motor performance. This minimizes the number of parts, reduces the number of parts, and makes the entire watch body thinner than when a magnetically shielded structure such as a magnetic shield member is adopted, which is effective for product development and cost reduction. It is possible to provide an electronic timepiece that is expected to be effective, has good workability when charged by an external magnetic field, does not require reliable battery replacement, and can be made thinner.

[Submission date] August 24, 1995

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007]

[Means for Solving the Problems]

Electronic timepiece of the present invention includes at least a rechargeable power supply, and an external operating member, and the step motor you drive coil, a stator, a time display member made of a rotor by winding the coil wire to the rod-like, movement of the rotor a wheel train portion for transmitting to said time display member, a coil wound around the coil wire into a rod, a stator, a rotor by Li Cheng alternator means, in a more becomes the electronic timepiece to the alternator means, said step The axial direction of the coil of the motor and the axial direction of the coil of the AC power generation means are arranged substantially at right angles in a plane. It is characterized by the following.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

[0018]

[Effect of device]

As described above, according to the present invention, the axial direction of the coil provided with at least one of the AC power generation means and the axial direction of the coil provided with at least one of the electromechanical conversion means are substantially perpendicular to each other. by arranging, it is possible to prevent adverse effects on the motor performance of the internal flux and external alternating magnetic field due to the magnetic flux watch electro chromatography transducer means for generating from an AC power generating means to a minimum, blind and proceeds in step hand movement not the name of the lag problems such as those that can provide an electronic watch.

[Brief description of drawings]

FIG. 1 is a plan layout view of a coil according to the present invention.

[Explanation of symbols]

 ··· Power source 2 ··· Stator 3 · · · Coil block 4 · · · Rotor 5 · · · Power generation stator 6 · · · Power generation coil block 7 8 ··· Train wheel 9 ··· Machine frame 10 ··· Switching unit 11 ··· External operation member

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[Procedure amendment]

[Submission date] August 24, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

Claims (1)

[Scope of utility model registration request] 1. A time display member comprising at least a chargeable power source, an external operating member, a switching unit for controlling the operation of the external operating member, and a coil-stator rotor having a coil wire wound in a rod shape. A step motor, a train wheel portion that transmits the movement of the rotor to the time display member, and an AC power generation unit including a coil-stator rotor in which a coil wire is wound in a rod shape. In an electronic timepiece capable of internal power generation and power generation by an external magnetic field from the outside of the timepiece, the train wheel unit is arranged substantially at the center of the timepiece body, and the power source, the switching unit, so as to surround the train wheel unit in a plane. Arrange the coil of the step motor, the coil of the AC generator,
One of the coils is arranged such that an extension line of the axis of the external operation member intersects the axis of the coil, and the other coil is arranged so as to be substantially perpendicular to the axis of the one coil, and the power source is the external power source. An electronic timepiece characterized in that the electronic timepiece is arranged on the opposite side of a coil which is arranged substantially at a right angle to a coil traversing an extension line of the axis of the external operation member with respect to the axis of the operation member.