JP4412366B2 - Electronic wristwatch with wireless function - Google Patents

Description

  The present invention relates to an electronic wristwatch with a wireless function, for example, a radio-controlled timepiece.

2. Description of the Related Art Conventionally, an electronic timepiece with a wireless function that receives a radio wave and performs a predetermined operation based on radio information included in the radio wave is known. A radio-controlled timepiece that corrects time based on received time information is known (for example, Patent Documents 1, 2, and 3).
Patent Document 1 discloses a configuration in which an antenna incorporated in a leather band of a wristwatch is connected to a watch body via a connection terminal formed in the band. In this configuration, since the antenna is not disposed on the watch body, the watch body can be downsized, and the reception performance of the antenna can be prevented from being affected by the metal portion of the watch body.
Patent Document 2 discloses a configuration in which an antenna is disposed in a groove formed on the inner periphery of an exterior case made of a nonmetallic member. In this configuration, since the outer case is non-metallic, standard radio waves are not shielded by the outer case, and radio waves are received well by the antenna.
Patent Document 3 discloses a configuration in which a spacer ring made of a non-conductive member is disposed inside a metal exterior case, and an antenna is disposed at a predetermined distance from the exterior case inside the spacer ring. Yes. In this configuration, since the antenna is separated from the exterior case by a predetermined distance, radio waves are received by the antenna without being affected by radio wave shielding by the exterior case, and the exterior case is made of metal. A sense of quality is produced.

However, in the radio-controlled timepiece disclosed in Patent Document 1, it is difficult to electrically connect the band and the timepiece main body, and the band with the built-in antenna is expensive. There is a problem that becomes larger. Further, when the band is bent, there is a problem that there is a high risk of damaging the incorporated antenna.
In the radio-controlled timepiece disclosed in Patent Document 2, since the radio wave is not shielded by the exterior case, the material of the exterior case is limited to non-metallicity. Then, since a metal exterior case cannot be adopted, there is a problem that a great restriction is added to the design.
In the radio-controlled timepiece disclosed in Patent Document 3, if the exterior case and the antenna are separated to such an extent that radio wave reception is not affected, there arises a problem that the timepiece becomes very large as a whole. On the other hand, when the outer case and the antenna are disposed close to each other, the standard radio wave is shielded by the outer case, so that there is a problem that the standard radio wave is not received well by the antenna.

  Further, conventionally, in a radio-controlled timepiece that includes an antenna that receives a standard radio wave including time information and corrects the time based on the time information received by the antenna, the radio wave is provided with a photovoltaic power generation means that generates power from the received light A modified timepiece is known (for example, Patent Documents 4 and 5).

The photovoltaic device includes a photoelectric conversion element having a photovoltaic function and a support substrate that supports the photoelectric conversion element. The photoelectric conversion element has a transparent conductive film serving as an electrode layer, and the support substrate is a metal substrate such as stainless steel.
At this time, since there is a possibility that the standard radio wave is shielded by the conductive film or the support substrate, it is necessary to arrange so that the standard radio wave is not shielded before the antenna by the photovoltaic power generation means. For example, as shown in FIG. 3 or FIG. 5 of Patent Document 4, when the photovoltaic power generation means is provided so as to overlap the dial, the antenna is mounted on the exterior case so that the photovoltaic power generation means and the antenna do not overlap. Must be placed outside.

However, as proposed in Patent Documents 4 and 5, if the photovoltaic power generation means and the antenna are not overlapped, the timepiece becomes very large. Then, there arises a problem that it is inconvenient for a small portable timepiece represented by a wristwatch.
On the other hand, if the antenna is disposed in the outer case, the outer case must be formed of a non-conductive and non-magnetic member so that radio waves are not shielded by the outer case. That is, a metal exterior case cannot be adopted, and it is difficult to produce a high-class feeling.
If the photovoltaic power generation means and the antenna are small, they can be arranged at positions where they do not interfere with each other. However, if the photovoltaic power generation means is small, the light receiving area becomes small, so that the power generation performance is degraded. Furthermore, if the antenna is small, there arises a problem that the reception performance is lowered.

JP-A-8-285960 JP 2000-105285 A JP 2001-33571 A WO97 / 21153 Japanese Patent Laid-Open No. 11-223684

Watches are required to have a high design, and especially for watches, an appearance suitable for luxury ornaments is an essential requirement. Therefore, there is a problem that it must have a metallic appearance and be designed to be compact. In addition, an electronic timepiece with a wireless function typified by a radio-controlled timepiece has a problem that it must receive radio waves satisfactorily with an antenna.
However, if a metallic exterior case is used to create a high-class feeling or a compact and compact design, there is a problem that radio waves cannot be received satisfactorily by the antenna.
The above prior art does not simultaneously deal with the problems of receiving radio waves with an antenna and improving aesthetics, and there is a demand for an electronic timepiece with a wireless function that can receive radio waves well and has aesthetics.

The purpose of the present invention is to solve the conventional problems, high reception performance in a small, and Ru near to provide an electronic wrist watch with a radio function to increase the degree of freedom of design.

An electronic wristwatch with a wireless function according to the present invention is arranged on a short cylinder-shaped exterior case having at least a metal part on an outer peripheral surface and having at least one of both ends opened in the cylinder axis direction, and the one opening side of the exterior case a time display means having a character plate to be a windshield that is disposed on the opening side of one, and movement having at least a control unit and the ground plane, is constituted by wound coil around the axis of the rod-like, the Wireless function including an antenna that is disposed at a position away from the inner peripheral surface of the outer case and receives radio waves, and a metal back cover that is disposed on the other opening side of the outer case and closes the opening In the electronic wristwatch, the dial and the windshield are made of non-conductive and non-magnetic members, and the base plate is made of non-conductive and non-magnetic members, and the dial side and the back cover side Penetrated into Through holes are formed, the coil of the antenna is disposed in the insertion hole of the main plate, and wherein the.
At this time, it is preferable that the antenna is also disposed in a recess provided on the back cover side of the ground plate around the insertion hole. The antenna is preferably fixedly attached to the recess.
Further, the time display means includes a metal minute hand that rotates on the dial, and the antenna is a position that may overlap with the minute hand provided in the time display means during normal hand movement. Further, it is preferable that the radio wave is disposed at a position that does not overlap the minute hand when receiving the radio wave at a predetermined reception time controlled by the control unit.
In addition, the electronic wristwatch with a wireless function receives a radio wave and an outer case having a short cylindrical shape having at least one metal portion on the outer peripheral surface and having at least one of both ends opened in the cylindrical axis direction, and an extension line of the axis line An antenna disposed in the exterior case in a state of passing through at least one opening of the exterior case, and a magnetic field component of the radio wave passing through at least an extension of the antenna axis in the exterior case opening It may be provided with a magnetic field passable part that is possible, a control part that executes a control operation based on information of the radio wave received by the antenna, and a time display means for displaying the time.

Here, the extension line of the antenna axis passes through the opening of the exterior case. The state where the extension line of the antenna axis extends from the region (opening) surrounded by the opening edge of the exterior case to the outside of the exterior case. That is, it means a state in which an extension line of the antenna axis passes through the opening. In other words, in the direction in which the axial direction of the antenna passes through the opening of the outer case, it means that the axial direction of the antenna and the outer case do not intersect.
In other words, the extension of the antenna axis line passes through the opening of the outer case. The antenna is attached to a member disposed on the opening side of the outer case, such as a dial, a windshield, and a back cover. When the dial, windshield, back cover, etc. have a magnetic field passable part, the extension of the antenna axis crosses the magnetic field passable part. It means being.

  The cylinder axis of the exterior case refers to an axis substantially perpendicular to the display surface of the time display means (mostly the dial surface) at the center point of the opening of the exterior case, and most of the axis is in the direction of the axis of the pointer mounting wheel. For example, when the exterior case is rotationally symmetric, it is an axis corresponding to the rotational symmetry axis.

In such a configuration, the radio wave has a magnetic field fluctuation that vibrates perpendicularly to the traveling direction.For example, when the cylinder axis direction of the outer case is directed perpendicular to the radio wave traveling direction, A magnetic field of radio waves enters the exterior case through the magnetic field passable portion. And the magnetic field which approachs from opening of an exterior case links with an antenna, and induces an induced voltage. Then, radio waves are received by the antenna.
That is, the magnetic field component of the radio wave enters the exterior case from the opening of the exterior case via the magnetic field passable portion. And the magnetic field component which entered from the opening of the exterior case is received by the antenna. Then, the radio wave information received by the antenna is signal-processed by the control unit, and the information included in the radio wave is decoded. Based on this information, a control operation is executed by the control unit. As control operations, if the radio wave is a standard radio wave including time information, the time is displayed on the time display means. If the radio wave information is weather forecast, stocking information, etc., the information is displayed on a predetermined display means. As an example.

  According to such a configuration, since the magnetic field component of the radio wave enters the exterior case from the opening of the exterior case, the amount of magnetic flux interlinked with the antenna is not affected by the material of the exterior case itself. Therefore, using a metal outer case, it is possible to improve the aesthetics such as giving a high-class feel to the design. In addition, the metal exterior case is superior in durability to, for example, a synthetic resin case, so that the surface is not easily scratched, and the internal timepiece machine body (movement) is protected.

  The magnetic field component of the radio wave enters from the opening of the outer case through the magnetic field passageable portion, and the extension line of the antenna axial line is directed to pass through the opening of the outer case. That is, since the antenna axis is in the direction of the magnetic field component entering from the opening of the outer case, radio waves entering from the opening of the outer case are efficiently received by the antenna. As a result, the reception performance of the antenna is improved. Further, since the reception performance of the antenna is improved, sufficient reception strength is ensured even if the antenna is small. If the antenna is miniaturized, the electronic wristwatch with a wireless function is miniaturized, and the electronic wristwatch with a wireless function thus miniaturized is excellent in aesthetics and is particularly suitable for a female wristwatch.

Here, the fact that the magnetic field component of the radio wave can pass through the magnetic field passable part means that the magnetic field component of the radio wave transmitted from the outside passes through the antenna so as to be linked to the antenna. It does not mean that the magnetic field component from the passage is passed through to the outer case.
And the magnetic field passage possible part of the present invention is when viewed from the plane direction (when viewed from the time viewing direction) in addition to the dial plate, the back cover, the parting plate, the windshield, the support substrate of the photovoltaic power generation means facing the antenna. Are all disposed in a region overlapping with the antenna in a plan view, and pass the magnetic field component of the radio wave so that the magnetic field component of the radio wave is linked to the antenna. For example, when the main plate and the train wheel bridge are made of plastic and are located on the extension of the axis of the antenna, the ground plate and the wheel train bridge constitute a part of the magnetic field passing portion.
Such a magnetic field passable part is constituted by, for example, a non-conductive and non-magnetic member or a high permeability member insulated from the metal outer case.

Here, in this invention, it is preferable that the said magnetic field passage possible part has an area comparable as the area of the end surface of the said antenna at least. As described above, if a magnetic field passable portion corresponding to at least the area of the end face of the antenna is secured, the antenna has more radio wave magnetic fields and can be linked more efficiently. Furthermore, it is preferable that the magnetic field passable portion has an area that is approximately twice the area of the end face of the antenna. If the magnetic field passable part is secured in an area about twice the end surface area of the antenna, the reception performance of the antenna is sufficiently secured.
The magnetic field passing portion may be a member that is formed of a non-conductive and non-magnetic member and does not shield the magnetic field component of the radio wave, or is a high-permeability member that transmits the magnetic field component of the radio wave to the antenna. The member which guides may be sufficient.

  In the present invention, the radio wave is a standard radio wave including time information, and the control unit measures the current time and corrects the current time based on the time information received by the antenna. The time display unit is display means for displaying the current time measured by the time control unit, and the electronic wristwatch with a wireless function is preferably a radio wave correction timepiece.

According to such a configuration, the standard radio wave is received by the antenna. Then, the time information of the standard radio wave is signal-processed by the clock control unit, and the time information included in the standard radio wave is decoded. Based on this time information, the current time is corrected, and the corrected current time is displayed on the time display means. Since the time is automatically corrected based on the time information of the standard radio wave, the radio wave correction clock that always displays the correct current time can be obtained.
The current time is a time measured by the time control unit. For example, when a time is counted by a current time counter (current time information storage unit) provided in the time control unit, a time error is detected. It is a time that has an error due to, or an accurate current time that has been corrected based on the time information by the timekeeping control unit. There are also. The time display means displays the time measured by the time control unit (current time counter). At this time, the time displayed on the time display means may be a time including a timing error, a corrected accurate time, or an undesirably corrected time. In addition, since the reception performance of the antenna is improved by the configuration of the present invention, the possibility that a reception error will occur is extremely low, and a situation where an erroneous time correction is made due to a reception error is almost avoided.

  In this invention, it is preferable that the said antenna is spaced apart from the internal peripheral surface of the said exterior case, and is arrange | positioned in the center side of the said exterior case.

According to such a configuration, the magnetic field component of the radio wave interlinked with the antenna is less affected by the outer case because the antenna is separated from the outer case. If the outer case is made of metal, the magnetic field of the radio wave is also attracted to the metal of the outer case. The reception performance of the antenna improves as it is less affected.
Here, when the antenna axis is arranged orthogonal to the cylinder axis of the outer case, the radio wave entering from the opening of the outer case must bend in a direction along the axis of the antenna. A gap that can be bent must be secured between the antenna and the outer case. Then, the problem that the enlargement of a timepiece cannot be avoided arises. However, in the present invention, since the extension line of the antenna axis passes through the opening of the outer case, the radio wave that has entered from the opening of the outer case is directly linked to the antenna.
Therefore, there is no need for a gap for turning radio waves in the direction along the axis of the antenna, and the distance between the outer case and the antenna may be narrower than in the past. As a result, the watch is reduced in size.

  In the present invention, it is preferable that the extension line of the antenna axis intersects the extension line of the cylindrical axis of the exterior case at 0 ° to 45 °.

  In such a configuration, if the extension of the antenna axis is at an angle of 45 degrees or less with respect to the extension of the cylinder axis of the exterior case, the antenna axis is connected to the component parallel to the cylinder axis of the exterior case and the cylinder axis. When the component is divided into orthogonal components, the component parallel to the cylinder axis of the exterior case becomes larger. Therefore, the reception performance of the antenna is improved with respect to a magnetic field that enters from one opening of the outer case and exits from the other opening, in particular, a magnetic field component that enters substantially parallel to the cylindrical axis of the outer case. Therefore, the radio wave entering from the opening of the outer case is efficiently received by the antenna. As a result, the degree of freedom in design such that the exterior case can be made of metal is increased, and further, the reception sensitivity of the antenna is improved, so that the antenna may be miniaturized. Miniaturized.

  Here, the axial direction of the antenna is selected from 0 degrees to 45 degrees with respect to the cylindrical axis direction of the exterior case. For example, a metal member that shields the magnetic field of radio waves is arranged at the opening of the exterior case. In such a case, it is desirable to incline the antenna axis at an angle at which the axial direction of the antenna and the metal member do not intersect. If the antenna axis is tilted so that the metal member is not positioned on the antenna axis as described above, and if the extension of the antenna axis intersects the extension of the tube axis of the exterior case within 45 degrees The reception performance of the antenna can be enhanced with respect to the magnetic field of radio waves entering the outer case.

  In addition, it is preferable that the extension line of the antenna axial line intersects the extension line of the cylindrical axis of the exterior case at 0 degrees or more and 30 degrees or less. Further, it is more preferable that the extension line of the antenna axis intersects the extension line of the cylinder axis of the exterior case at 0 degree or more and 15 degrees or less. The closer the antenna axis and the cylinder axis of the exterior case are to be approximately parallel, the greater the linkage flux between the magnetic field parallel to the cylinder axis of the exterior case and the antenna coil. As a result, the reception performance of the antenna is improved accordingly.

In this invention, it is preferable that the axis line of the said antenna is substantially parallel to the cylinder axis of the said exterior case.
Here, that the axis of the antenna and the cylinder axis of the exterior case are substantially parallel means, for example, that the extension line of both forms an angle of about 0 degree to 15 degrees, preferably 10 degrees or less, and more Preferably, the angle is not more than 5 degrees, or the axis of the antenna is parallel to the cylindrical axis of the outer case so that at least a part of both end faces of the outer case can be seen when viewed from the cylindrical axis direction of the outer case. Say.

  In such a configuration, the amount of magnetic flux entering the exterior case from the opening of the exterior case is maximized when the magnetic field direction of the radio wave is substantially parallel to the cylindrical axis of the exterior case. Since the axis of the antenna and the cylindrical axis of the outer case are substantially parallel, the interlinkage magnetic flux of the antenna is maximized at the same time when the amount of magnetic flux entering from the opening of the outer case is maximum. Therefore, the reception performance of the antenna is maximized. In addition, since the reception strength is sufficiently ensured, the antenna can be further downsized.

Further, if the antenna axis is arranged substantially parallel to the cylinder axis of the outer case, the ratio of the antenna on the cross section perpendicular to the cylinder axis of the outer case can be reduced. As a result, it is possible to reduce the size of the timepiece when viewed from the cylinder axis direction of the exterior case.
Alternatively, when the antenna axis is in a direction substantially parallel to the cylinder axis of the exterior case, the cross-sectional area of the antenna does not affect the thickness of the watch, so that the cross-sectional area of the antenna can be increased. Then, since the flux linkage increases, the reception sensitivity of the antenna is improved. For example, even when an electronic timepiece with a wireless function is used as a wristwatch, the thickness of the timepiece can be reduced, for example, 10 mm or less.

  In the present invention, the magnetic field passable part is preferably formed of a nonconductive and nonmagnetic member.

According to such a configuration, the magnetic field component of the radio wave is not shielded, passes through the magnetic field passable portion, is linked to the antenna, and is received by the antenna.
Since the extension of the antenna axial line passes through the opening of the outer case, even if a magnetic field passable part is arranged on the antenna axial direction (on the extension line), there are no restrictions on the material of the outer case. Is also not given. And what is positioned in the axial direction of the antenna is generally some of a ground plate, a train wheel bridge, a dial plate and a lid, which are non-conductive and non-magnetic members such as plastic and ceramic, Even if it is formed of inorganic glass or the like, there is no significant effect on the beauty.
Note that the magnetic field passing portion does not have to shield the magnetic field component of the radio wave, so that nothing may be disposed in the axial direction of the antenna, and the end face of the antenna may be exposed facing the outside of the watch.

  In the present invention, the outer case is opened at both ends in the cylinder axis direction, and holds a train wheel that transmits a driving force based on drive control by the control unit to the time display means from the cylinder axis direction of the outer case. It is preferable that a ground plate and a train wheel bridge are provided, and at least one of the ground plate and the train wheel bridge is formed of a non-conductive and non-magnetic member.

  According to such a configuration, the opening of the exterior case is at least partially covered by the base plate that sandwiches the train wheel in the cylinder axis direction of the exterior case and the train wheel support. However, since at least one of them is formed of a non-conductive and non-magnetic member, a radio wave magnetic field can enter the exterior case from any opening of the exterior case. This magnetic field is linked to the antenna, and radio waves are received by the antenna.

Here, it is preferable that both the main plate and the train wheel bridge are formed of non-conductive and non-magnetic members. According to such a configuration, the magnetic field of radio waves enters the exterior case without being shielded from both openings of the exterior case. Then, the amount of magnetic flux that enters the outer case increases, so that the flux linkage of the antenna is increased. As a result, the reception performance of the antenna is improved.
Furthermore, when a driving means for generating a magnetic field at the time of driving, such as a stepping motor, is used, it is necessary to prevent the magnetic field generated from the driving means from reaching the antenna. Therefore, the base plate and the train wheel bridge are formed of non-conductive and non-magnetic members, so that the magnetic field from the driving means is prevented from being transmitted through the ground plane and the train wheel bridge and affecting the antenna. Then, only the magnetic field of radio waves is linked to the antenna, and the reception performance of the antenna is improved.

  In the present invention, the outer case is provided with a lid portion that is open at both ends in the cylinder axis direction and closes one opening of the outer case, and the time display means is opposite to the lid portion with the antenna in between. It is preferable that a dial disposed on the opening side of the exterior case is provided on the side, and at least one of the dial and the lid is formed of a non-conductive and non-magnetic member.

According to such a configuration, at least one of the dial covering the opening of the outer case and the lid portion is formed of a non-conductive and non-magnetic member. A magnetic field of radio waves enters the exterior case through the non-magnetic member. And since this magnetic field is linked to the antenna, radio waves are received by the antenna.
Here, it is preferable that both the dial and the lid are non-conductive and non-magnetic members. According to such a configuration, the radio wave magnetic field can enter the exterior case without being shielded from the opening of the exterior case, so that the reception performance of the antenna is improved.

  In addition, when only one of the main plate and the train wheel bridge is a non-conductive and non-magnetic member and only one of the dial and the lid is a non-conductive and non-magnetic member, the non-conductive And the non-magnetic member must be on the same side with respect to the antenna. That is, a configuration in which the base plate and the dial are formed of a non-conductive and non-magnetic member, or a configuration in which the train wheel bridge and the back cover are formed of a non-conductive and non-magnetic member can be given as examples. . In addition, the time display surface is disposed on the opening side of the exterior case means that the time display surface is not only disposed in the opening of the exterior case but also an opening surrounded by the opening edge of the exterior case. It includes the case where it is arranged outside beyond.

  The present invention includes a calendar wheel that displays at least one of year, day, and week information and rotates across an extension line of the antenna axis, and the calendar wheel is a non-conductive and non-magnetic member. Preferably it is formed.

According to such a configuration, information such as year and date is displayed on the calendar car. Further, since the calendar wheel is a non-conductive and non-magnetic member, the magnetic field of radio waves is not shielded on the antenna axial direction. Generally, since the calendar wheel is disposed in the opening of the exterior case and rotates on the lower surface of the dial, there is a possibility that the calendar wheel is positioned on the antenna axial direction. Therefore, if the calendar wheel is formed of a non-conductive and non-magnetic member, the amount of flux linkage of the antenna is not affected even when the calendar wheel is arranged in the antenna axial direction.
In general, the calendar wheel is only partially viewed from a date window formed in the dial. Therefore, even if the calendar wheel is limited to a non-conductive and non-magnetic member, the aesthetic appearance is not affected.

  In the present invention, a high permeability member that is positioned at least on an extension of the axis of the antenna and that guides the magnetic field of the radio wave to the antenna is disposed in a state of being electrically insulated from the exterior case. Is preferred.

According to such a configuration, since the magnetic field of the radio wave is attracted by the high permeability member, in addition to the magnetic field of the radio wave existing in the axial direction of the antenna, the magnetic field of the radio wave existing in the vicinity is attracted. And the magnetic field of many radio waves induced | guided | derived to the high magnetic permeability member is linked with an antenna. Therefore, the flux linkage of the antenna is increased, and the reception performance of the antenna is improved.
Since the magnetic flux magnetic field is attracted by the high permeability member to increase the linkage flux of the antenna, the reception performance is maintained even if the antenna is miniaturized.
Note that the high magnetic permeability member is preferably made of the same material as the antenna shaft core in order to reduce magnetic resistance. Examples of the high magnetic permeability member include pure iron, permalloy, iron, or a cobalt-based amorphous alloy.

  In the present invention, the outer case is provided with a lid portion that is open at both ends in the cylindrical axis direction and closes one opening of the outer case, and the time display means defines the lid portion with the antenna in between. A dial disposed on the opposite side to the opening side of the exterior case, wherein at least one of the dial and the lid is formed of a non-conductive and non-magnetic member, and the dial It is preferable that a high magnetic permeability member is disposed at a position corresponding to the antenna of at least one of the lid portions, that is, a position corresponding to an extension line of the axis of the antenna.

According to such a configuration, the magnetic flux of many radio waves induced by the high permeability member is linked to the antenna, whereby the linkage flux of the antenna is increased and the reception performance of the antenna is improved. Since the magnetic field of the radio wave is attracted by the high permeability member, the interlinkage magnetic flux is sufficiently ensured and the reception performance is maintained even if the antenna is miniaturized.
A driving means (stepping motor) that generates a magnetic field in the outer case may be used. However, since the high magnetic permeability member is disposed only at a position corresponding to the antenna, if such a driving means is disposed at a certain distance from the high magnetic permeability member and the antenna, the magnetic field from the driving means is disposed. Is sufficiently prevented from being guided to the antenna by the high magnetic permeability member.

  Here, in the present invention, the outer case includes a lid portion that is open at both ends in the cylinder axis direction and closes one opening of the outer case, and the time display means includes the lid between the lid and the lid. A dial disposed on the opening side of the outer case on the side opposite to the portion, the dial and the lid are formed of a high permeability member, and the outer case is formed of the dial And it is preferable that it is insulated from the said cover part.

  According to such a configuration, since the magnetic field is attracted by the high permeability member, in addition to the electromagnetic field existing in the axial direction of the antenna, the electromagnetic field existing in the vicinity of the opening of the outer case is also attracted. Further, since the exterior case and the high permeability member are insulated, the magnetic field attracted to the high permeability member does not flow to the exterior case. Therefore, many magnetic fields induced by the high permeability member are linked to the antenna. As a result, the flux linkage of the antenna is increased and the reception performance of the antenna is improved.

Since the dial and the lid itself are formed of a high permeability member, the magnetic field of radio waves can be collected over a wide area. As a result, more magnetic field is guided to the antenna, and reception performance is further improved.
Since the magnetic field of the radio wave is attracted by the high permeability member and the interlinkage magnetic flux of the antenna is increased, the interlinkage magnetic flux is sufficiently ensured and the reception performance is maintained even if the antenna is miniaturized.

  Here, when a driving means is used, a piezoelectric actuator is preferably used. Since the dial and the lid are high permeability members, all the magnetic fields existing in the vicinity of the dial and the lid are guided to the antenna. However, since a magnetic field is not generated in the case of a piezoelectric actuator, only a radio wave magnetic field is linked to the antenna, and the radio wave is accurately received by the antenna.

In the present invention, the time display means includes a metal pointer that rotates on the opening side of the exterior case to indicate the time, and the antenna overlaps the position of the pointer when receiving the radio wave in a plane. It is preferable that they are arranged at positions that do not become necessary.
Here, the antenna does not overlap with the pointer position at the time of radio wave reception. This means that the pointer position at the time of reception is different from the extension of the antenna axis, and the extension of the antenna axis does not intersect the pointer. That is, it means that the pointer and the antenna do not overlap in plan view when the outer case is viewed from the cylinder axis direction.

According to such a configuration, when the radio wave is received by the antenna, the pointer is not positioned on the antenna axial direction (on the extension line). Therefore, even if the pointer is formed of a metallic member, the reception performance of the antenna is not affected. If the pointer is made of metal, a high-quality feeling is produced and aesthetics are improved.
For example, in a radio-controlled timepiece, the reception time is generally set once or twice a day. Therefore, for example, when the standard radio wave is set to be received from 2:00 am to 2: 6 am, avoid the needle position range from 2:00 to 2: 6 which is the reception time. An antenna is arranged. Then, at the time of reception, the magnetic field of the standard radio wave is not shielded by the pointer in the antenna axial direction, and the standard radio wave is received by the antenna.
In the case of receiving a radio wave by inputting a forced reception operation, an avoiding operation for avoiding the pointer from the antenna axial direction may be automatically performed.

In the present invention, it is preferable that the time display means includes a pointer that rotates to indicate the time, and includes a piezoelectric actuator that rotates the pointer using vibration of a piezoelectric element excited by application of a voltage.
According to such a configuration, since the piezoelectric actuator does not generate a magnetic field even when driven, it does not affect the reception of the antenna. Therefore, since only the magnetic field of radio waves is linked to the antenna, the reception performance of the antenna is improved.

  In the present invention, there is provided a movement having a train wheel composed of gears, a crystal unit including a crystal unit and a circuit block including the control unit, and a battery for supplying power to the movement, and in a planar arrangement. It is preferable that at least one of the train wheel, the crystal unit, and the circuit block is disposed between the antenna and the battery.

According to such a configuration, a distance can be maintained between the battery and the antenna. Then, the antenna can receive radio waves without being affected by the battery.
In general, since a battery has a metal outer can, a magnetic field is attracted to the metal outer can in the vicinity of the battery. However, when the battery and the antenna are separated from each other by a predetermined distance, the interlinkage magnetic flux of the antenna is sufficiently ensured, and the reception performance of the antenna is improved.
In addition, the train wheel, crystal unit, and circuit block must be placed somewhere inside the outer case. If a circuit block or the like is provided, dead space is eliminated and space utilization efficiency is improved.

  In the present invention, a photoelectric conversion unit that is disposed on the opening side of at least one of the exterior cases and that receives external light and generates power from the received light can be electrically connected to the magnetic field component of the radio wave, and the exterior A support substrate that supports the photoelectric conversion unit in a state of being electrically insulated from a case, and the antenna is disposed with an end face in an axial direction facing the support substrate within a predetermined interval. It is preferable.

Here, it is exemplified that the support substrate capable of conducting the magnetic field component of the radio wave is formed of a high permeability member. Examples of the high magnetic permeability member include pure iron, permalloy, iron, or a cobalt-based amorphous alloy.
In addition, the end face of the antenna is arranged to face the support substrate within a predetermined interval means that the end face of the antenna and the support substrate are close to each other in addition to the state where the end face of the antenna is placed in contact with the support substrate And a state of being opposed to each other is included.
The predetermined interval is exemplified as being smaller than the distance between the support substrate and the outer case, and is a distance at which the magnetic field of the radio wave guided to the support substrate flows into the antenna rather than flowing into the outer case.

In such a configuration, since the photoelectric conversion unit faces outward from the opening of the outer case, the magnetic field of the radio wave is attracted to the support substrate that supports the photoelectric conversion unit. Since the antenna shaft core is disposed to face the support substrate, the magnetic field of the radio wave guided to the support substrate flows to the antenna shaft core and links to the antenna. The radio wave received by the antenna is subjected to signal processing in the control unit, information included in the radio wave is decoded, and a control operation by the control unit is executed based on the received information.
When light is irradiated to the photoelectric conversion unit, power is generated by photoelectric conversion. Radio waves are received and control operations of the control unit are performed by the generated power.

  The magnetic field guided to the support substrate enters the exterior case from the opening of the exterior case and interlinks with the antenna. Therefore, the amount of magnetic flux linked to the antenna is not affected by the material of the outer case itself. Therefore, a metal exterior case can be used, and a high-class feeling is given to the design.

When the radio wave is attracted by the support substrate, the magnetic flux linked to the antenna is increased. For example, the area of the support substrate may be set to a size that covers the entire opening of the outer case. Then, the magnetic field of radio waves is attracted by a large area. If the support substrate is simply placed in the opening of the exterior case, radio waves are shielded in front of the antenna. However, if the end surface of the antenna is disposed opposite to the support substrate within a predetermined interval, it is guided to the support substrate. A magnetic field is directed to the antenna. Therefore, there is an epoch-making effect that the reception performance of the antenna is improved while having a photovoltaic power generation function. In addition, since the magnetic field of the radio wave is induced by the support substrate, sufficient reception performance is ensured even if the antenna is downsized. And the electronic wristwatch with a wireless function is miniaturized by downsizing the antenna.
Further, since the antenna may overlap the photoelectric conversion unit, the antenna can be enlarged. If the antenna can be enlarged, the reception performance can be further improved.

  Note that although a conductive film is provided in the photoelectric conversion portion, this conductive film is thin enough to transmit light (electromagnetic waves) and hardly shields radio waves.

In the present invention, the outer case is opened at both ends in the cylinder axis direction, and is provided on the opening side opposite to the opening where the photoelectric conversion unit is provided, with the antenna interposed therebetween. It is preferable that a high permeability member for guiding the antenna to the antenna is provided, and an end surface of the antenna opposite to the support substrate is disposed to face the high permeability member within a predetermined interval.
Here, examples of the high permeability member that guides the magnetic field component of the radio wave to the antenna include pure iron, permalloy, iron, and a cobalt-based amorphous alloy.

According to such a configuration, the magnetic field of the radio wave is attracted by the high permeability member. Then, since the end face of the antenna is disposed opposite to the high permeability member, the magnetic field induced in the high permeability member is linked to the antenna. Therefore, the magnetic flux linked to the antenna is increased, and the reception performance of the antenna is improved.
Further, if the area of the high magnetic permeability member is increased, the amount of magnetic flux to be induced is increased, so that the linkage flux of the antenna is further increased. Furthermore, since both end surfaces of the antenna are disposed opposite to the support substrate and the high magnetic permeability member, a very large amount of magnetic field is guided to the antenna from both end surfaces, and the reception performance of the antenna is dramatically improved.

Note that the high permeability member that guides the magnetic field component of the radio wave to the antenna may be provided separately from the parts that constitute the watch movement, but the parts that constitute the movement may be shared as the high permeability member. Good.
For example, a regulating lever that stops the movement of the train wheel during needle alignment, a component cover that covers the lever component of the switching unit, and the like may be shared as the high permeability member. Then, the reception performance of the antenna is improved without increasing the number of parts.

  In addition, it is preferable to provide the cover part which block | closes the said opening of the said exterior case, and the said cover part is formed with the member which is nonelectroconductive and nonmagnetic. According to such a configuration, since the magnetic field is not shielded by the lid, the magnetic field of the radio wave induced by the high permeability member is linked to the antenna, and the reception performance of the antenna is improved.

In the present invention, the outer case is opened at both ends in the cylindrical axis direction, closes the opening opposite to the opening where the photoelectric conversion unit is provided, and the magnetic field component of the radio wave It is preferable that a lid portion formed so as to be able to pass therethrough is provided, and an end surface of the antenna opposite to the support substrate is disposed to face the lid portion within a predetermined interval.
Here, it is exemplified that the lid portion is formed of a high permeability member such as pure iron, permalloy, iron, or a cobalt-based amorphous alloy.

  According to such a configuration, the magnetic field of the radio wave is attracted by the lid. Then, since the end surface of the antenna is disposed opposite to the lid portion, the magnetic field induced in the lid portion is linked to the antenna. Therefore, the magnetic flux linked to the antenna is increased, and the reception performance of the antenna is improved. Furthermore, since both end surfaces of the antenna are disposed opposite to the support substrate and the lid, a magnetic path is formed in which a magnetic field flowing from one of both end surfaces of the antenna flows out to the other. Therefore, it becomes a structure which the magnetic field of an electromagnetic wave tends to interlink with an antenna. By the support substrate and the lid, a very large number of magnetic fields are guided from both end faces of the antenna to the antenna, and the reception performance of the antenna is dramatically improved.

  In the present invention, it is preferable that two or more of the antennas are provided and two or more of the support substrates are provided, and at least two or more of the antennas are provided corresponding to the different support substrates.

  According to such a configuration, since two or more antennas are provided, it is possible to provide antennas having different reception performances by changing the cross-sectional diameter of each antenna, the number of coil turns, and the like. Furthermore, when each antenna is disposed opposite to a different support substrate, different amounts of magnetic flux can be induced to each antenna by the support substrate having a different area, material, or the like. And if the support board | substrate optimal for the receiving performance of an antenna is matched, the receiving performance of each antenna will be adjusted optimally. For example, if the area of the support substrate is large, a large amount of noise is attracted in addition to radio waves, but by appropriately selecting the size of the support substrate according to the reception performance of the antenna, radio waves are appropriately transmitted at each antenna. Received.

  In this invention, it is preferable that the said time display means is equipped with the light-transmitting dial plate arrange | positioned on the opposite side to the said antenna between the said photovoltaic power generation means.

  According to such a configuration, the time is displayed by rotating the hands on the time display surface provided on the dial. In addition, since the dial is light transmissive, light passes through the dial and enters the photoelectric conversion unit. Then, electric power is generated by the photoelectric conversion unit. Since the dial is light transmissive, the amount of light incident on the photoelectric conversion unit is not affected, and the power generation performance in the photoelectric conversion unit is not impaired.

  Here, in the present invention, it is preferable that two or more antennas are provided, and at least two of the antennas are connected in series.

  According to such a configuration, since the signal strength received by each antenna is added in series, the reception performance of the entire antenna is improved. In addition, when a plurality of antennas (coils thereof) arranged at different positions are connected in series, the signal intensities received by the respective antennas are added together, so that the individual antennas themselves may be small. And if a small antenna is arrange | positioned in the clearance gap in an exterior case, since space utilization efficiency will be improved by elimination of a dead space, it will be reduced in size as the whole electronic wristwatch with a wireless function.

  In the present invention, it is preferable that two or more antennas are provided and at least two of the antennas are connected in parallel.

According to such a configuration, since the signals received by the respective antennas are processed in parallel, the control operation is accurately performed by the radio waves correctly received by any one of the antennas. Therefore, the probability that the control operation can be accurately performed by the correctly received radio wave is improved.
Even within the outer case, radio waves may not be received correctly with antennas placed near a metal outer case or near a stepping motor, but multiple antennas placed at different locations within the outer case If it is received at either of these, an accurate control operation is performed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
A first embodiment of a radio-controlled timepiece as an electronic wristwatch with a wireless function according to the present invention will be described with reference to FIGS.
FIG. 1 is a plan view of the first embodiment viewed from the dial side, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a sectional view taken along line III-III in FIG. The figure is shown.
This radio-controlled timepiece 100 is a wristwatch type, and includes an outer case 1 having a ring shape (a short cylindrical shape having both ends open) as shown in FIGS. 1, 2, and 3.
Case 1 is a metal member of rings at both ends of the cylindrical axis L ₁ is a axial gear that drives the hands (e.g. the axial direction of the second wheel 444) is opened, for example, brass, It is made of stainless steel or titanium alloy. The thickness of the outer case 1 is smaller than the diameter and is formed to be 10 mm or less or 5 mm or less.
Attachment portions 11 and 12 to which a wristwatch band is attached are formed at portions opposite to each other on the outer periphery of the outer case 1. Here, when viewed from the center point of the exterior case 1, the direction in which one of the attachment portions 11, 12 is provided is the 12 o'clock direction, and the direction in which the other of the attachment portions 11, 12 is provided is the 6 o'clock direction. . In FIG. 1, the upper direction (the mounting portion 11) is the 12 o'clock direction, and the lower direction (the mounting portion 12) is the 6 o'clock direction.

A winding stem 131 as an external operation means 13 is provided so as to penetrate the body portion of the outer case 1 from approximately 4 o'clock. One end of the winding stem 131 is located outside the outer case 1, and a crown 132 is provided at this one end. The other end of the winding stem 131 is located inside the outer case 1, and a kanuki 133 and a mandarin duck 134 are provided on the other end side.
The cannula 133 is engaged with the thumb wheel 135 and the winding stem 131 is pulled out, so that the thumb wheel 135 is moved in the axial direction of the winding stem 131 via the mandarin duck 134 and the cannula 133. Then, the hand position is corrected, or the date indicator 45 is corrected. A switching unit is configured by the winding stem 131, the cannula 133, the mandarin duck 134, the thumb wheel 135, and the like.

As shown in FIGS. 2 and 3, a time display means 2 is provided on one opening side of the outer case 1, and a back cover 3 as a lid portion for closing the opening is provided on the other opening of the outer case 1. Is provided.
The time display means 2 rotates on the dial 21 having a time display surface 211 having a time display surface 211 substantially orthogonal to the cylinder axis direction L ₁ (the vertical direction in FIG. 1) of the outer case 1. The pointers 221 and 222 are provided.
The dial 21 has a substantially disc shape and has an area for closing the opening of the outer case 1. The dial plate 21 is formed of a non-conductive and non-magnetic member, and is formed of, for example, inorganic glass, plastic, or ceramic. The time display surface 211 is provided outward so as to be visible from the outside, and numerals (not shown) representing the time are printed in an annular shape near the outer edge on the time display surface 211.

The pointer includes a minute hand 221 that indicates the minute and an hour hand 222 that indicates the hour. The pointers 221 and 222 are both formed of a metal member such as brass, aluminum, or stainless steel.
A windshield 23 is provided so as to face the dial 21 with the hands 221 and 222 therebetween. The windshield 23 has an area for closing the opening of the outer case 1. The windshield 23 is formed of a non-conductive and non-magnetic light transmissive member, and is formed of, for example, inorganic glass or organic glass.

  The back cover 3 is provided opposite to the dial 21 with a predetermined interval and has an area for closing the opening of the outer case 1. The back cover 3 is formed of a non-conductive and non-magnetic member, and is formed of, for example, inorganic glass or ceramic.

  Between the dial 21 and the back cover 3 inside the outer case 1, there are a movement 4 having a timekeeping function, an inner frame 14 for fixing the movement 4 to the outer case 1, and a battery for supplying power to the movement 4. 49 and antennas 5A and 5B for receiving standard radio waves including time information are provided.

The movement 4 includes a crystal unit 41 including a crystal unit 411, a circuit block 42 as a control unit (time control unit) having a control function, and a stepping motor 43A as a driving unit for rotating the hands 221 and 222. and 43B, a stepping motor 43A, a gear train 44 for transmitting the power of 43B guidelines 221, 222, and date wheel (calendar wheel) 45 indicating the day, the gear train 44 from the cylinder axis L ₁ of the case 1 A ground plate 46 and a train wheel bridge 47 are provided.

The crystal unit 41 includes a crystal unit 411 for a reference clock, a crystal unit 412 for 60 kHz as a crystal unit for generating a tuning signal that tunes to the frequency (60 kHz, 40 kHz) of a standard radio wave, and a crystal unit for 40 kHz. And a vibrator 413. The crystal oscillators 412 and 413 for generating the tuning signal are arranged in the direction of about 9 o'clock.
The crystal unit 41 and the circuit block 42 are arranged in the direction of about 7 o'clock. FIG. 4 shows a functional block diagram of the crystal unit 41 and the circuit block 42.
The circuit block 42 processes a standard radio wave received by the antennas 5A and 5B and outputs it as time information, a storage circuit 422 that stores time information output from the reception circuit 421, and a crystal oscillator 411. The central control circuit 423 that counts the current time with the clock pulses and corrects the current time with the received time information, the motor drive circuit 425 that drives the stepping motors 43A and 43B, and the hand position detection circuit 426 that detects the pointer position. And.

The reception circuit 421 includes an amplification circuit that amplifies standard radio waves received by the antennas 5A and 5B, a filter that extracts a desired frequency component, a demodulation circuit that demodulates a signal, a decoding circuit that decodes the signal, and the like. Yes.
The storage circuit 422 temporarily stores the time information decoded by the reception circuit 421 and compares the plurality of stored time information with each other to determine success or failure of reception.
The central control circuit 423 includes an oscillation circuit, a frequency dividing circuit, a current time counter that counts the current time, and a time correction circuit that corrects the count value of the current time counter according to the received time information. The central control circuit 423 includes a reception control circuit 424 that stores the reception schedule of the reception circuit 421 and controls the reception operation. The reception schedule is set to perform the reception operation from 2:00 am to 2: 6 am. Is called. When the reception control circuit 424 is instructed to receive time information by an input operation using the external operation means 13, the reception circuit 421 performs a reception operation based on an output signal from the reception control circuit 424.
The motor drive circuit 425 applies drive pulses to the stepping motors 43A and 43B at a timing commanded from the central control circuit 423.
The hand position detection circuit 426 detects the hand positions of the hands (the minute hand 221 and the hour hand 222) and outputs the detection result to the central control circuit 423. In the central control circuit 423, the detection result from the hand position detection circuit 426 is compared with the counter value of the time counter. Based on the comparison result, the motor drive circuit 425 is instructed to output a motor pulse that matches the pointer position with the counter value.

The driving means includes a minute hand stepping motor 43A for rotating the minute hand 221 and an hour hand stepping motor 43B for rotating the hour hand 222.
The stepping motors 43A and 43B are driven by driving coils 431A and 431B that generate magnetic force by driving pulses supplied from the motor driving circuit 425, stators 432A and 432B excited by the driving coils 431A and 431B, and stators 432A and 432B. And rotors 433A and 433B that are rotated by an excited magnetic field.
In the planar arrangement, as shown in FIG. 1, the drive coil 431A of the minute hand stepping motor 43A and the drive coil 431B of the hour hand stepping motor 43B have a positional relationship in which the extension lines of the central axes thereof are substantially orthogonal (each central axis Are arranged at an angle α of approximately 90 degrees). The angle α may be in the range of 45 degrees to 135 degrees. The minute hand stepping motor 43A is disposed on the outer periphery of the movement 4 in the approximately 11 o'clock direction, and the hour hand stepping motor 43B is disposed on the outer periphery of the movement 4 in the approximately 8 o'clock direction.

The train wheel 44 transmits the rotation of the rotors 433A and 433B toward the hands 221 and 222, and the minute hand wheel connected to the second wheel 444 that rotates integrally with the minute hand shaft 442 to which the minute hand 221 is connected from the minute hand stepping motor 43A. A row 44A and an hour hand wheel train 44B connected to the hour wheel 441 to which the hour hand 222 is connected from the hour hand stepping motor 43B are provided.
The date wheel 45 is a gear that is held inside the outer case 1 by a main plate 46, a train wheel bridge 47, and a date wheel presser 451, and has an open center portion. The date wheel 45 is formed of a non-conductive and non-magnetic member, and is formed of, for example, plastic, inorganic glass, paper material, or the like. The date wheel 45 meshes with a train wheel (not shown) connected to the hour wheel 441 and is rotated at a predetermined speed by the rotation of the hour wheel 441. The date wheel 45 is marked with letters representing the date facing the dial 21 (not shown). In addition, as indicated by the alternate long and short dash line in FIG. 1, the dial 21 is formed with a date window 212 that allows the character of the date indicator 45 to be visually recognized from the outside in an approximately 3 o'clock direction.

The main plate 46 supports the wheel train 44 on the dial plate 21 side, and the wheel train receiver 47 supports the wheel train 44 on the back cover 3 side. The main plate 46 and the train wheel bridge 47 are formed of non-conductive and non-magnetic members, and are formed of, for example, plastic or ceramic.
The wheel train 44, the stepping motors 43 </ b> A and 43 </ b> B, and the circuit block 42 are sandwiched and integrated between the main plate 46 and the wheel train receiver 47, thereby configuring the movement 4.
The middle frame 14 is a ring-shaped member along the inner periphery of the outer case 1 and surrounds the peripheral end surface of the movement 4. The middle frame 14 is formed of a non-conductive and non-magnetic member, and is formed of, for example, plastic or ceramic.

  The battery 49 is a primary battery or a secondary battery, and its outer can case is made of metal. The battery 49 is arranged in the direction of approximately 2 o'clock and occupies a place from approximately 1 o'clock to approximately 3 o'clock.

Two antennas, a first antenna 5A and a second antenna 5B, are provided, and both are arranged in the movement 4 in the direction of about 5 o'clock. The first antenna 5A is disposed close to the inner periphery of the outer case 1, and the second antenna 5B is disposed closer to the center of the movement 4 than the first antenna 5A. However, at least the middle frame 14 is interposed between the first antenna 5A and the outer case 1, and the first antenna 5A and the outer case 1 are separated by a predetermined distance.
The first antenna 5A and the second antenna 5B are formed by winding coils 52A and 52B around a high-permeability member such as rod-shaped ferrite, pure iron, or amorphous metal that forms the shaft cores 51A and 51B, as shown in FIG. As shown, the coil 52A of the first antenna 5A and the coil 52B of the second antenna 5B are connected in series.

The first antenna 5A and second antenna 5B is their axial L _5A, L _5B are substantially parallel to the cylindrical axis L ₁ of the case 1. The axial directions L _5A and L _5B of the first antenna 5A and the second antenna 5B intersect the dial 21 and the back cover 3 provided in the opening of the exterior case 1, and the intersection angle is approximately 90 degrees. It is. The date wheel 45 intersects the dial 21 side on the axis of the first antenna 5A. The lengths of the first antenna 5 </ b> A and the second antenna 5 </ b> B in the axial direction are substantially the same as the distance between the main plate 46 and the train wheel bridge 47.
In the planar arrangement in FIG. 1, the crystal unit 41 and the circuit block 42 are located between the first and second antennas 5A and 5B and the hour hand stepping motor 43B. The external operation means 13 is located between the first and second antennas 5A, 5B and the battery 49.

The operation of the first embodiment having such a configuration will be described.
The current time of the time counter provided in the central control circuit 423 is updated by the reference clock generated by dividing the oscillation of the crystal oscillator 411. Further, the position of the hands (minute hand 221 and hour hand 222) is detected by the hand position detection circuit 426, and the detection result is output to the central control circuit 423. The central control circuit 423 compares the hand position and the counter value of the time counter, and the stepping motors 43A and 43B are driven via the motor driving circuit 425 based on the comparison result. The rotation of the rotors 433A and 433B by the driving of the stepping motors 43A and 43B is transmitted to the hands 221 and 222 by the wheel train 44, and the numbers on the time display surface 211 are instructed by the hands 221 and 222, so that the current time is Is displayed.

Next, a standard radio wave reception operation and a time correction operation based on standard radio time information will be described.
At 2:00 am, which is the reception start time set in the reception control circuit 424, a reception operation start command is output from the reception control circuit 424 to the reception circuit 421. Alternatively, when a forced reception operation signal is input by the external operation means 13, a reception start command is output from the reception control circuit 424 to the reception circuit 421.
Here, since the outer case 1 is open in the cylinder axis direction L ₁ , the magnetic field component of the standard radio wave enters the outer case 1 from this opening. The magnetic field of the standard radio wave is linked to the coils 52A and 52B through the train wheel bridge 47, the dial 21, the date wheel 45, the base plate 46, and the back cover 3 disposed in the opening of the outer case 1. . Then, the standard radio waves are received by the antennas 5A and 5B. When receiving a reception start command, the receiving circuit 421 receives power supply from the battery 49 and starts decoding signals (time information) received by the antennas 5A and 5B.
The decoded time information is temporarily stored in the storage circuit 422, and the time information obtained by receiving a plurality of times (for example, six times) is compared before and after to determine the accuracy of reception. The current time of the time counter is corrected by a time correction circuit provided in the central control circuit 423 in accordance with the correctly received time information. Then, the hand position is corrected according to the time of the time counter, and the time according to the reception time is indicated.

According to such 1st Embodiment, there can exist the following effects.
(1) Since the exterior case 1 is made of metal, a high-class feeling is produced. Since the standard radio wave entering from the opening of the cylindrical axis L ₁ of the case 1 in the outer case 1 is received by the antenna 5A, 5B, antenna 5A be the case 1 is formed of metal, receiving the 5B Does not affect performance.

(2) Since both ends of the outer casing 1 in the cylindrical axis direction L ₁ are opened, the magnetic field of the standard radio wave can pass through the opening of the outer casing 1 and enter the outer casing 1 along the cylindrical axis direction L ₁ . The axial directions L _5A and L _{5B of} the antennas 5A and 5B are substantially parallel to the cylinder axial direction L ₁ of the outer case 1. Then, since the magnetic field that has entered the outer case 1 passes through the shaft cores 51A and 51B arranged at the centers of the coils 52A and 52B, the standard radio waves are received by the antennas 5A and 5B. Further, since the direction of the magnetic field entering the outer case 1 and the axial directions L _5A and L _5B of the antennas 5A and 5B are substantially parallel, the flux linkage to the antennas 5A and 5B is maximized, and the antenna 5A, The reception performance of 5B is dramatically improved.

(3) Since the two ends of the cylindrical axis L ₁ of the case 1 is opened, the magnetic field of the standard radio without being any shielded from the opening of the outer case 1 are possible enters the case 1, further, The axial directions L _5A and L _{5B of the} antennas 5A and 5B are along the magnetic field fluctuation direction entering the outer case 1. Therefore, the magnetic field of the standard radio wave entering the outer case 1 is directly linked to the antennas 5A and 5B, so that the reception performance of the antennas 5A and 5B is improved.
Since the reception performance of the antennas 5A and 5B is improved, sufficient reception performance is ensured even if the antennas 5A and 5B themselves are downsized. Since the antennas 5A and 5B are downsized, the radio-controlled timepiece 100 is downsized.

(4) The dial 21, the windshield 23, the back cover 3, the base plate 46, the train wheel bridge 47 and the date wheel 45 are formed of non-conductive and non-magnetic members. Accordingly, the standard radio wave in the tube axis direction L ₁ of the case 1 is not shielded. As a result, the magnetic field fluctuation of the standard radio wave can enter the exterior case 1 from the cylinder axis direction L ₁ of the exterior case 1.

(5) In the planar arrangement, the winding stem 131 is arranged between the antennas 5A and 5B and the battery 49, and the circuit block 42 is arranged between the antennas 5A and 5B and the hour hand stepping motor 43B. The battery 49 having an outer can made of metal and the stepping motor 43B that generates a magnetic field may affect the radio wave reception of the antennas 5A and 5B, but the winding stem 131 and the circuit block 42 are interposed, The distance from the antennas 5A and 5B is maintained. Therefore, the standard radio waves are received by the antennas 5A and 5B without being affected by the battery 49 and the stepping motor 43B.

(6) The middle frame 14 is formed of a non-conductive and non-magnetic member, and is interposed between the antennas 5A and 5B and the exterior case 1. If the antennas 5A and 5B are arranged close to the outer case 1, the magnetic field of the standard radio wave flows to the metal of the outer case 1 rather than the antennas 5A and 5B, and the reception performance of the antennas 5A and 5B may be reduced. There is. However, in the present embodiment, the distance between the outer case 1 and the antennas 5A and 5B is secured by the non-conductive and non-magnetic inner frame 14, so that the reception performance of the antennas 5A and 5B is maintained.

(7) Since the antennas 5A and 5B are arranged in the 5 o'clock direction and the reception time is set to 2:00 am, the hands 221 and 222 are not positioned on the axes of the antennas 5A and 5B at the reception time. Therefore, even the metallic pointers 221 and 222 do not affect the reception of the standard radio waves by the antennas 5A and 5B, and the aesthetics are improved by making the metallic pointers 221 and 222 have a high-class design.

(8) Since the first antenna 5A and the second antenna 5B are connected in series, the reception performance is enhanced by adding the signals received by the first antenna 5A and the second antenna 5B.

(9) The minute hand stepping motor 43A and the hour hand stepping motor 43B are provided, and the minute hand 221 and the hour hand 222 are independently rotated by separate stepping motors 43A and 43B. Therefore, even when the time is corrected with the received time information, the minute hand 221 and the hour hand 222 can be rotated independently, and the position of the pointer can be instantaneously corrected. For example, as compared with the configuration in which the hour hand 222 advances by one scale in conjunction with one rotation of the minute hand 221, the hour hand 222 is directly rotated, so that the correction with respect to time is quick and the power consumption is reduced accordingly.

(10) The drive coils 431A and 431B of the stepping motors 43A and 43B are arranged at an angle of 90 degrees. Therefore, the magnetic fluxes do not easily interfere with each other, and do not interfere with the rotation control of the rotors 433A and 433B. As a result, the hands 221 and 222 are accurately moved.

(Second Embodiment)
A second embodiment of a radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIGS.
FIG. 6 shows a plan view of the second embodiment viewed from the dial side, FIG. 7 shows a cross-sectional view taken along line VII-VII in FIG. 6, and FIG. 8 shows connections of the antennas 5A and 5B.
The basic configuration (basic structure and material of each member) of the second embodiment is the same as that of the first embodiment, but the second embodiment is different from the first embodiment in that the dial 21 and the back cover 3, the configuration of the movement 4, and the arrangement of the antennas 5 </ b> A, 5 </ b> B, and the like.

As in the first embodiment, a dial plate 21 and a back cover 3 are provided. The dial plate 21 and the back cover 3 are made of a high magnetic permeability member such as pure iron, permalloy, amorphous metal (Fe-based, Co-based). Etc.).
The dial 21 and the back cover 3 are insulated from the outer case 1 made of metal in the same manner as in the first embodiment by the middle frame 14 made of a non-conductive member such as plastic.

The movement 4 includes a crystal resonator unit 41 including a crystal resonator 411, a circuit block 42 having a control function, a piezoelectric actuator 48 as a driving means for rotating the hands 221 and 222, and the power of the piezoelectric actuator 48 as a pointer. A train wheel 44 that transmits to the wheels 221 and 222, and a base plate 46 and a train wheel receiver 47 that sandwich the train wheel 44 from the cylinder axis direction L ₁ of the outer case 1 are provided.

The crystal unit 41 and the circuit block 42 are arranged in the direction of about 9 o'clock. The configurations of the crystal unit 41 and the circuit block 42 are the same as those in the first embodiment.
The driving means includes a piezoelectric actuator 48. The piezoelectric actuator 48 includes a reinforcing plate 481 formed in a substantially rectangular flat shape, a piezoelectric element 483 attached to both front and back surfaces of the reinforcing plate 481, and electrodes (not shown) provided on the surface of the piezoelectric element 483. It is prepared for. Then, the piezoelectric element 483 is excited by the application of an alternating voltage to the electrode, and the convex portion 482 provided at the diagonal position of the reinforcing plate 481 moves in a substantially circular orbit.

The train wheel 44 includes a first gear 443 that is rotated by the circumferential orbital motion of the convex portion 482 when the convex portion 482 of the piezoelectric actuator 48 is pressed, and a minute hand shaft that meshes with the first gear 443 and has the minute hand 221 attached thereto. A second gear 444 that rotates integrally with 442, a minute wheel 445 that decelerates the rotation of the second gear 444 in a predetermined cycle, and a hour wheel 441 that meshes with the minute wheel 445 and to which the hour hand 222 is attached. It is prepared for.
The small wheel 446 is meshed with the minute wheel 445, and when the winding stem 131 is pulled out, the thumb wheel 135 provided at one end of the winding stem 131 is pushed by the cannula 133 to mesh with the small iron wheel 446. Is done.

As in the first embodiment, two antennas, the first antenna 5A and the second antenna 5B, are provided. The first antenna 5A is arranged in the direction of about 4 o'clock, and the second antenna 5B is about 7 o'clock. Arranged in the direction.
The first antenna 5A and the second antenna 5B are the same as those in the first embodiment. The first antenna 5A and the second antenna 5B have coils 52A and 52B and rod-shaped shafts 51A and 51B made of high permeability members such as ferrite, pure iron, and amorphous metal. Is wound and configured.
As for the 2nd antenna 5B, the axial core 51B which has a ferrite is formed in the cross-sectional rectangular shape. Further, the coil 52A of the first antenna 5A and the coil 52B of the second antenna 5B are connected in parallel as shown in FIG.
The coil 52A of the first antenna 5A and the coil 52B of the second antenna 5B may be connected in series as shown in FIG.

The first antenna 5A and the second antenna 5B are provided so that the axial directions L _5A and L _5B are substantially parallel to the cylindrical axis direction L ₁ of the exterior case 1, and the end surfaces of the first antenna 5A and the second antenna 5B are characters. It is in contact with the plate 21 and the back cover 3.
An insertion hole 471 through which the first antenna 5A and the second antenna 5B are inserted is formed through the train wheel bridge 47.
If the end surfaces of the first antenna 5A and the second antenna 5B are sufficiently close to the dial plate 21 and the back cover 3, the end surfaces of the antennas 5A and 5B are not in contact with the dial plate 21 or the back cover 3. May be.
Further, the dial plate 21 and the back cover 3 are formed of the same material as the antenna shaft cores 51A and 51B in order to reduce the magnetic resistance with the antenna shaft cores 51A and 51B.

The operation of the second embodiment having such a configuration will be described.
The piezoelectric actuator 48 is driven via the motor drive circuit 425 based on the comparison result between the pointer position and the counter value of the time counter. The driving of the piezoelectric actuator 48 is transmitted to the hands 221 and 222 via the wheel train 44, and the numbers on the time display surface 211 are indicated by the hands 221 and 222, so that the current time is displayed.
Further, the magnetic field of the standard radio wave is attracted to the dial plate 21 and the back cover 3 by the high permeability of the dial plate 21 and the back cover 3. Then, the magnetic field attracted to the dial plate 21 and the back cover 3 passes through the antenna shafts 51A and 51B of the antennas 5A and 5B and is linked to the coils 52A and 52B, and the standard radio waves are received by the antennas 5A and 5B. . Then, time correction is performed according to the time information received by the antennas 5A and 5B.

According to such 2nd Embodiment, in addition to the effect similar to the effect (1)-(4) (6) (7) of the said embodiment, there can exist the following effect.
(11) Since the dial plate 21 and the back cover 3 are formed of a high permeability member, the magnetic field of the standard radio wave is guided to the antennas 5A and 5B over the wide surfaces of the dial plate 21 and the back cover 3. As a result, the reception performance of the antennas 5A and 5B is improved.

(12) Since the dial 21 and the back cover 3 formed of a high magnetic permeability member are insulated from the exterior case 1, the magnetic field components of the standard radio wave induced in the dial 21 and the back cover 3 are applied to the exterior case 1. There is no escape. Accordingly, the magnetic field components of the standard radio wave guided by the dial 21 and the back cover 3 are all guided to the antennas 5A and 5B, and the reception performance of the antennas 5A and 5B is improved.

(13) Since the piezoelectric actuator 48 does not generate a magnetic field even during driving, the reception performance of the antennas 5A and 5B is not affected even if the piezoelectric actuator 48 is disposed in the vicinity of the antennas 5A and 5B.
Here, when a stepping motor or the like that generates a magnetic field is used, if the dial 21 and the back cover 3 are high permeability members, the magnetic field generated from the stepping motor flows through the dial 21 and the back cover 3 and the antenna 5A. 5B. However, since the piezoelectric actuator 48 that does not generate a magnetic field is used in the present embodiment, it is possible to improve the reception performance of the antennas 5A and 5B by attracting standard radio waves by the dial 21 and the back cover 3 that are high permeability members. .

(14) Between the first antenna 5A and the battery 49, a switching unit (pointer correction unit) composed of the winding stem 131, the cannula 133, the mandarin duck 134, and the thumb wheel 135 is disposed. A crystal resonator unit 41 and a circuit block 42 are disposed between them. Since the outer can of the battery 49 is formed of metal, the magnetic flux induced by the dial 21 and the back cover 3 is likely to be guided to the outer can of the battery 49 in the vicinity of the battery 49. However, the winding stem 131, the circuit block 42, and the like are disposed between the battery 49 and the antennas 5A and 5B, thereby separating the antennas 5A and 5B from the battery 49. As a result, a sufficient flux linkage to the antennas 5A and 5B is ensured, and the reception performance of the antennas 5A and 5B is improved.

(15) Since the antennas 5A and 5B are connected in parallel, the time is corrected with the time information received by one of the antennas 5A and 5B. Therefore, the probability of successful reception can be improved.

(Third embodiment)
A third embodiment of a radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIGS.
FIG. 9 shows a plan view of the main part of the third embodiment viewed from the dial side, and FIG. 10 shows a partial cross-sectional view of the vicinity of the antenna.
The basic configuration (basic structure and material of each member) of the third embodiment is the same as that of the first embodiment, but is characterized by the number and arrangement of antennas, the dial, and the back cover.
The outer case 1 is made of metal as in the first embodiment.
As antennas, three antennas, a first antenna 5A, a second antenna 5B, and a third antenna 5C, are provided. The first antenna 5A is disposed in the approximately 2 o'clock direction, the second antenna 5B is disposed in the approximately 4 o'clock direction, and the third antenna 5C is disposed in the approximately 9 o'clock direction. The first, second, and third antennas 5A, 5B, and 5C may be all connected in series, or may be connected in parallel. Alternatively, for example, the first antenna 5A and the second antenna 5B are connected in series by using the series connection and the parallel connection in combination, while the third antenna is connected to the first antenna 5A and the second antenna 5B. 5C may be connected in parallel.
The axial direction L _5A ( _{5B, 5C} ) of the antennas _{5A to 5C} is substantially parallel to the cylindrical axis direction L ₁ of the outer case 1.

The number of the stepping motor 43 is one, and the train wheel 44 is rotated by the first gear 443 rotated by the stepping motor 43, the second gear 444 that rotates integrally with the minute hand shaft 442 by the first gear 443, and the rotation of the minute hand shaft 442. A minute wheel 445 that decelerates at a predetermined cycle, and a hour wheel 441 that meshes with the minute wheel 445 and to which an hour hand is attached.
The stepping motor 43 is arranged in the direction of about 6 o'clock.
A crystal resonator unit 41 and a circuit block 42 are provided. The crystal resonator unit 41 is disposed in the approximately 10 o'clock direction, and the circuit block 42 is disposed in the approximately 8 o'clock direction. The third antenna 5C is located between the crystal unit 41 and the circuit block 42.

  The dial plate 21 and the back cover 3 are provided, and are formed of a non-conductive and non-magnetic member such as inorganic glass or ceramic. As shown in FIG. 10, the dial 21 and the back cover 3 are provided with through holes 213 and 31 at portions facing the shaft cores 51A to 51C of the antennas 5A to 5C, respectively. The through holes 213 and 31 are increased in diameter with steps 214 and 32 toward the inside of the outer case 1. High permeability members 215 and 33 (for example, pure iron, permalloy, amorphous metal, etc.) are fitted into the through holes 213 and 31. The high magnetic permeability members 215 and 33 have flange portions 216 and 34 that are engaged with the steps 214 and 32 of the through holes 213 and 31, and are fitted into the through holes 213 and 31 from the inside of the exterior case 1 and the antenna 5A. It is fixed by being pressurized from the shaft cores 51A to 51C of ˜5C. That is, the high magnetic permeability members 215 and 33 are in contact with the shaft cores 51A to 51C of the antennas 5A to 5C. The high magnetic permeability members 215 and 33 are made of the same material as the antenna shafts 51A to 51C in order to reduce the magnetic resistance with the antenna shafts 51A to 51C.

According to such 3rd Embodiment, in addition to the effect (1)-(3) (6) of the said embodiment, there can exist the following effect.
(16) The magnetic field of the standard radio wave is guided to the antennas 5A to 5C by the high permeability members 215 and 33 provided on the axes of the antennas 5A to 5C. As a result, the flux linkages of the antennas 5A to 5C are increased, and the reception performance of the antennas 5A to 5C is improved.

(17) Since the high permeability members 215 and 33 are located only on the axes of the antennas 5A to 5C, the magnetic field generated from the stepping motor 43 that drives the hands 221 and 222 via the wheel train 44 is generated by the antennas 5A to 5A. The possibility of being guided to 5C can be reduced. When the dial 21 and the entire back cover 3 are high permeability members, there is a high possibility that most of the magnetic field of the stepping motor 43 is guided to the antennas 5A to 5C, but only on the axes of the antennas 5A to 5C. Since the high magnetic permeability members 215 and 33 are arranged on the upper surface of the stepping motor 43 so that the high magnetic permeability members 215 and 33 do not overlap the stepping motor 43 in a plan view, the magnetic field from the stepping motor 43 is generated by the high magnetic permeability members 215 and 33. The possibility of affecting the antennas 5A to 5C through the transmission can be reduced.

(18) The crystal unit 41 is positioned between the third antenna 5C and the battery 49, and the circuit block 42 is positioned between the third antenna 5C and the stepping motor 43. Therefore, the third antenna 5C is less affected by the battery 49 and the stepping motor 43, and the reception performance is maintained high.
(19) Even when it is difficult to support the antennas 5A, 5B, and 5C with only the dial 21 and the back cover 3 formed of inorganic glass or ceramic, the rigidity is set at a position where the antennas 5A and 5B come into contact with the end faces. Since the high magnetic permeability members 215 and 33 having the above are disposed, the shaft cores 51A to 51C of the antennas 5A to 5C are supported by the high magnetic permeability members 215 and 33.

(Fourth embodiment)
A fourth embodiment of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIG. FIG. 11 is a plan view showing the arrangement of main components when the fourth embodiment is viewed from the dial side.
The basic configuration (basic structure and material of each member) of the fourth embodiment is the same as that of the first embodiment, but the fourth embodiment is characterized by the configuration of the movement, the antenna, etc. It is a point regarding arrangement.
Similar to the first embodiment, the time display means 2 is provided on one side of the opening of the outer case 1 formed of a metal member. The time display means 2 includes a dial 21 having a time display surface 211 that is substantially orthogonal to the cylinder axis direction of the outer case 1 (the direction orthogonal to the plane of FIG. 11), and a pointer that rotates on the dial 21. It is prepared for.

  Here, three time display surfaces 211 are provided on the dial 21. One is a time display surface 211A that is provided near the outer edge in the direction of about 12 o'clock and displays the alarm time, and one is a time display surface 211B that is provided near the outer edge in the direction of about 6 o'clock and displays the current time. The remaining one is a time display surface 211C provided near the outer edge in the direction of approximately 9 o'clock and displaying the second time.

  The hands are provided as hands that rotate on the respective time display surfaces 211A to 211C. An alarm hour hand 222A and a minute hand 221A are provided on the time display surface 211A in the approximately 12 o'clock direction, and an hour hand 222B and a minute hand 221B for displaying the current time are provided on the time display surface 211B in the approximately 6 o'clock direction. A second hand 223C indicating the second is provided on the time display surface 211C in the approximately 9 o'clock direction.

  The movement 4 includes a crystal resonator unit (not shown) including a crystal resonator, a circuit block (not shown) having a control function, stepping motors 43A to 43C as driving means for rotating a pointer, and a stepping motor 43A. Comprising wheel trains 44A to 44C for transmitting the drive of .about.43C to the pointer, and a base plate (not shown) and a train wheel bridge (not shown) for sandwiching the wheel trains 44A to 44C from the cylinder axis direction of the exterior case 1. Has been.

Three stepping motors 43A to 43C are provided as driving means, and the alarm stepping motor 43A for rotating the alarm hour / minute hands 221A and 222A and the current time for rotating the hour / minute hands 221B and 222B indicating the current time are provided. A stepping motor 43B and a second hand stepping motor 43C for rotating the second hand 223 are provided.
The alarm stepping motor 43A is arranged in the approximately 10 o'clock direction, the current time stepping motor 43B is arranged in the approximately 4 o'clock direction, and the second hand stepping motor 43C is disposed in the approximately 8 o'clock direction. The stepping motors 43 </ b> A to 43 </ b> C are disposed on the outer peripheral side of the movement 4 accommodated in the outer case 1.

The train wheel includes a train wheel 44A that transmits rotation from the alarm stepping motor 43A to the alarm pointer, a train wheel 44B that transmits rotation from the current time stepping motor 43B to the current time indicator, and a second hand stepping. A wheel train 44C for transmitting rotation from the motor 43C toward the second hand.
The battery 49 is arranged in the direction of approximately 2 o'clock.
The antenna 5 is formed by winding a coil 52 around an axial core 51 having a rectangular cross section, and is disposed at a substantially central portion of the exterior case. The axial direction of the antenna 5 (the direction perpendicular to the paper surface in FIG. 11) is substantially parallel to the cylindrical axis direction of the outer case 1.

According to such 4th Embodiment, in addition to the effect similar to the effect (1)-(5) of the said embodiment, there can exist the following effect.
(20) Since the stepping motors 43A to 43C and the wheel trains 44A to 44C are arranged near the outer periphery of the movement 4, a large space is secured in the center. Then, by arranging the antenna 5 at the center of the movement 4, the cross-sectional area of the antenna 5 can be increased. Then, the flux linkage linked to the antenna 5 can be increased and the reception performance of the antenna 5 can be improved.

(Fifth embodiment)
A fifth embodiment of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIG. FIG. 12 shows a partial cross-sectional view near the antenna in the fifth embodiment.
The basic configuration of the fifth embodiment (basic structure and material of each member) is the same as that of the first embodiment, but is characterized by the axial direction of the antenna.
In FIG. 12, an exterior case 1 made of a metal member is provided as in the first embodiment, and a metallic dial ring 15 is provided between the exterior case 1 and the windshield 23. The dial ring 15 has a protrusion 151 that slightly protrudes from the opening edge of the outer case 1 toward the center of the opening. The dial ring 15 defines the outer peripheral shape of the dial 21 when viewed from the time viewing direction, and the design is improved by the decorativeness of the dial ring 15 surface and the decorative surface of the dial surface.

The antenna 5 is sandwiched between the dial plate 21 and the back cover 3 and is provided close to the outer case 1 with an inner frame 14 formed of plastic interposed therebetween. Axial L ₅ of the antenna 5 has a slight inclination with respect to the cylinder axis L ₁ of the case 1. That is, the end face on the dial 21 side of the antenna 5 is slightly shifted toward the center of the outer case 1 to the extent that the axial direction L ₅ of the antenna 5 is displaced from the protrusion 151 of the dial ring 15. The inclination angle of the antenna 5 is not particularly limited, and the axial direction L ₅ of the antenna 5 is deviated from the dial ring 15 such as 45 degrees, 30 degrees, 15 degrees, 10 degrees, and 5 degrees. It suffices if the axial direction L ₅ is within a range that passes through the opening of the outer case 1.
The dial plate 21 and the back cover 3 are formed of non-conductive and non-magnetic members.

According to such 5th Embodiment, in addition to the effect similar to the effect (1)-(6) of the said embodiment, there exist the following effects.
(21) By tilting the axis of the antenna 5, it is possible to avoid the metal member (dial ring 15) disposed in the opening of the exterior case 1 from intersecting the axis direction L _{5 of the} antenna 5. Therefore, the magnetic field of the standard radio wave is not shielded by the metal member (dial ring 15) on the axial direction L ₅ of the antenna 5, and the magnetic field component of the standard radio wave entering from the opening of the outer case 1 can be linked to the antenna 5. As a result, the reception performance of the antenna 5 is improved.

(Sixth embodiment)
A sixth embodiment of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIG. FIG. 13 is a plan view of the main part showing the planar arrangement of the antenna 5 in the sixth embodiment.
The basic configuration (basic structure, material of each member, etc.) of the sixth embodiment is the same as that of the first embodiment, but is characterized by the shape and position of the antenna.
The antenna 5 is disposed on the movement 4 along the outer peripheral shape of the movement 4, and is formed by winding a coil 52 around an axial core 51 having a circular arc shape along the inner periphery of the outer case 1. The antenna 5 is disposed on the outer edge of the movement 4.
An inner frame 14 for fixing the movement 4 to the outer case 1 is provided inside the outer case 1. The middle frame 14 is formed of a nonconductive and nonmagnetic member such as plastic. Since the middle frame 14 is interposed between the antenna 5 and the outer case 1, the antenna 5 is separated from the outer case 1, and the antenna 5 and the outer case 1 are electrically insulated by the middle frame 14. The
The axis of the antenna 5 (in the direction perpendicular to the paper surface in FIG. 13) is substantially parallel to the cylinder axis direction of the exterior case 1 (in the direction perpendicular to the paper surface in FIG. 13).

According to such 6th Embodiment, in addition to the effect (1)-(6) of the said embodiment, there exist the following effects.
(22) Since the antenna 5 is disposed between the outer edge of the movement 4 and the exterior case 1, the movement 4 can be disposed in a wide open space on the center side of the exterior case 1. Moreover, since the antenna 5 has a shape along the inner periphery of the exterior case 1, it is possible to eliminate dead space and improve space utilization efficiency.

(Seventh embodiment)
A seventh embodiment of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIGS.
14 shows a plan view of the seventh embodiment viewed from the dial side, FIG. 15 shows a cross-sectional view taken along line XV-XV in FIG. 14, and FIG. 16 shows a cross-sectional view taken along line XVI-XVI in FIG. The figure is shown.
The radio-controlled timepiece 100 is a wristwatch type, and includes an outer case 1 having a ring shape (a short cylindrical shape with both ends open) as shown in FIGS. 14, 15, and 16.
Case 1 is a ring-shaped metal member having both end surfaces of the cylindrical axis L ₁ is a is open (the axial direction, for example the second wheel 444) axially of the gear that drives the hands, for example, brass , Stainless steel, titanium alloy and so on. The thickness of the outer case 1 is smaller than the diameter of the ring, and is formed to be 10 mm or less or 5 mm or less. Mounting portions 11 and 12 for attaching a wristwatch band are formed at positions opposite to each other on the outer periphery of the outer case 1. Here, when viewed from the center point of the exterior case 1, the direction in which one of the attachment portions 11, 12 is provided is the 12 o'clock direction, and the direction in which the other of the attachment portions 11, 12 is provided is the 6 o'clock direction. . In FIG. 14, the upper direction (the attachment portion 11) is the 12 o'clock direction, and the lower direction (the attachment portion 12) is the 6 o'clock direction.

  A winding stem 131 as an external operation means 13 is provided so as to penetrate the body portion of the outer case 1 from approximately 3 o'clock. One end of the winding stem 131 is located outside the outer case 1, and a crown 132 is provided at this one end. The other end of the winding stem 131 is located inside the outer case 1, and a kanuki 133 and a mandarin duck 134 are provided on the other end side. The cannula 133 is engaged with the thumb wheel 135 and the winding stem is pulled out, whereby the thumb wheel 135 is moved in the axial direction of the winding stem 131 via the mandarin duck 134 and the cannula 133. Then, the hand position is corrected and the date wheel (not shown) is corrected. A switching unit is configured by the winding stem 131, the cannula 133, the mandarin duck 134, the thumb wheel 135, and the like.

As shown in FIGS. 15 and 16, the time display means 2 and the photovoltaic power generation means are provided on one opening side of the outer case 1, and the other opening of the outer case 1 serves as a lid portion that closes the opening. A back cover 3 is provided.
The time display means 2 rotates on the dial 21 having a time display surface 211 having a time display surface 211 substantially orthogonal to the cylinder axis direction L ₁ (the vertical direction in FIG. 14) of the outer case 1. The pointers 221 and 222 are provided.
The dial 21 has a substantially disc shape and has an area for closing the opening of the outer case 1. The dial plate 21 is formed of a member having optical transparency, non-conductivity, and non-magnetism, and is formed of, for example, inorganic glass, plastic, paper, ceramics, or the like. The time display surface 211 is provided outward so as to be visible from the outside, and numerals (not shown) representing the time are printed in an annular shape near the outer edge on the time display surface 211. On the time display surface 211, a surface finish pattern or painting may be applied.

The pointer includes a minute hand 221 that indicates the minute and an hour hand 222 that indicates the hour. The pointers 221 and 222 are both formed of a metal member such as brass, aluminum, or stainless steel.
A windshield 23 is provided so as to face the dial 21 with the hands 221 and 222 therebetween. The windshield 23 has an area for closing the opening of the outer case 1. The windshield 23 is formed of a non-conductive and non-magnetic light transmissive member, and is formed of, for example, inorganic glass or organic glass.

Photovoltaic generating means 6 is disposed on the opposite side of the dial 21 from the time display surface 211. The photovoltaic power generation means 6 includes a photoelectric conversion element 61 as a photoelectric conversion unit that generates power by photoelectric conversion, and a support substrate 62 that mounts and supports the photoelectric conversion element 61.
The photoelectric conversion element 61 has a panel shape having substantially the same area as the dial plate 21 and is configured by laminating a transparent electrode layer (TOC), a semiconductor layer, and a transparent electrode layer in this order from the dial plate 21 side. (Not shown). The transparent electrode layer is a transparent electrode film, and examples of the transparent conductive film include SnO ₂ , ZnO, ITO (Indium Tin Oxide), and the like. The semiconductor layer is a PIN photodiode having a pn junction structure made of microcrystalline or amorphous silicon. The photoelectric conversion element 61 faces the outside through the light-transmitting dial 21.

The support substrate 62 is made of a high permeability member such as a magnetic material such as stainless steel, an amorphous alloy mainly containing pure iron, permalloy, or cobalt, or an amorphous alloy mainly containing iron. The support substrate 62 has a plate shape having substantially the same area as the photoelectric conversion element 61 and is bonded to the photoelectric conversion element 61 on the side opposite to the dial plate 21.
In addition, the shape and area of the photoelectric conversion element 61 and the support substrate 62 can be variously selected depending on the case. In addition to a circular shape, a square shape, a triangular shape, for example, various character shapes can be freely used.

  The back cover 3 is provided opposite to the dial 21 with a predetermined interval and has an area for closing the opening of the outer case 1. The back cover 3 is formed of a high permeability member such as ferrite, pure iron, or amorphous metal.

  Between the photovoltaic power generation means 6 and the back cover 3 inside the outer case 1, a movement 4 having a timekeeping function, an inner frame 14 for holding the movement 4 in the outer case 1, and a battery for supplying electric power to the movement 4 49 and antennas 5A and 5B for receiving standard radio waves including time information are provided.

The movement 4 includes a crystal unit 41 including a crystal unit 411, a circuit block 42 as a control unit (time control unit) having a control function, and a piezoelectric actuator 48 as a driving unit that rotates the hands 221 and 222. And a train wheel 44 that transmits the power of the piezoelectric actuator 48 to the hands 221 and 222, and a base plate 46 and a train wheel receiver 47 that sandwich the train wheel 44 from the cylinder axis direction L ₁ of the outer case 1.

The crystal unit 41 includes a crystal unit 411 for a reference clock, a crystal unit 412 for 60 kHz as a crystal unit for generating a tuning signal that tunes to the frequency (60 kHz, 40 kHz) of a standard radio wave, and a crystal unit for 40 kHz. And a vibrator 413. The crystal oscillators 412 and 413 for generating the tuning signal are arranged in the direction of about 9 o'clock.
The crystal unit 41 and the circuit block 42 are arranged in the direction of about 9 o'clock. FIG. 17 shows a functional block diagram of the crystal unit 41 and the circuit block 42.
The circuit block 42 processes a standard radio wave received by the antennas 5A and 5B and outputs it as time information, a storage circuit 422 that stores time information output from the reception circuit 421, and a crystal oscillator 411. A central control circuit 423 that counts the current time with the clock pulses of the current and corrects the current time with the received time information, a drive circuit 425 that drives the piezoelectric actuator 48, and a needle position detection circuit 426 that detects the pointer position Prepare.

The reception circuit 421 includes an amplification circuit that amplifies standard radio waves received by the antennas 5A and 5B, a filter that extracts a desired frequency component, a demodulation circuit that demodulates a signal, a decoding circuit that decodes the signal, and the like.
The storage circuit 422 temporarily stores the time information decoded by the reception circuit 421 and compares the plurality of stored time information with each other to determine success or failure of reception.
The central control circuit 423 includes an oscillation circuit, a frequency dividing circuit, a current time counter that counts the current time, and a time correction circuit that corrects the count value of the current time counter according to the received time information. The central control circuit 423 includes a reception control circuit 424 that stores the reception schedule of the reception circuit 421 and controls the reception operation. The reception schedule is set to perform the reception operation from 2:00 am to 2: 6 am. Is called. When the reception control circuit 424 is instructed to receive time information by an input operation using the external operation means 13, the reception circuit 421 performs a reception operation based on an output signal from the reception control circuit 424.
The drive circuit 425 applies a drive pulse to the piezoelectric actuator at a timing commanded from the central control circuit 423.
The hand position detection circuit 426 detects the hand positions of the hands (the minute hand 221 and the hour hand 222) and outputs the detection result to the central control circuit 423. In the central control circuit 423, the detection result from the hand position detection circuit 426 is compared with the counter value of the time counter. Based on the comparison result, the drive circuit 425 is instructed to output a pulse that matches the pointer position with the counter value.

  The driving means includes a piezoelectric actuator 48. The piezoelectric actuator 48 includes a reinforcing plate 481 formed in a substantially rectangular flat shape, a piezoelectric element 483 attached to both front and back surfaces of the reinforcing plate 481, and an electrode (not shown) provided on the surface of the piezoelectric element 483. It is prepared for. Then, the piezoelectric element 483 is excited by the application of an alternating voltage to the electrode, and the convex portion 482 provided at the diagonal position of the reinforcing plate 481 moves along a substantially circular orbit.

The train wheel 44 includes a first gear 443 that is rotated by the circumferential orbital motion of the convex portion 482 when the convex portion 482 of the piezoelectric actuator 48 is pressed, and a minute hand shaft that meshes with the first gear 443 and to which the minute hand 221 is attached. A second gear (second wheel) 444 that rotates integrally with 442, a minute wheel 445 that decelerates the rotation of the second gear 444 in a predetermined cycle, and meshes with the minute wheel 445 and the hour hand 222 is attached. And hour wheel 441.
The small wheel 446 meshes with the minute wheel 445, and when the winding stem 131 is pulled out, the wheel 135 provided at one end of the winding stem 131 is pushed by the cannula 133 and meshed with the small wheel 446. The

The main plate 46 supports the wheel train 44 on the dial plate 21 side, and the wheel train receiver 47 supports the wheel train 44 on the back cover 3 side. The main plate 46 and the train wheel bridge 47 are formed of non-conductive and non-magnetic members, and are formed of, for example, plastic or ceramic. The photovoltaic means 6 is sandwiched between the main plate 46 and the dial plate 21, and the supporting substrate 62 is urged from the main plate to the dial plate side to fix the position of the photovoltaic means. The photovoltaic power generation means 6 may be fixed in position by screwing the support substrate 62 to the ground plate 46.
A movement 4 is configured by sandwiching a train wheel 44, a piezoelectric actuator 48, and a circuit block 42 between a main plate 46 and a train wheel bridge 47.
The middle frame 14 is a ring-shaped member along the inner periphery of the outer case 1 and surrounds the peripheral end surface of the movement 4. The middle frame 14 is formed of a non-conductive and non-magnetic member, and is formed of, for example, plastic or ceramic. The middle frame 14 is located between the photovoltaic device 6 and the outer case 1 and between the back cover 3 and the outer case 1 to insulate the support substrate 62 and the outer case 1, The back cover 3 and the outer case 1 are insulated. Insulation between the support substrate 62 and the outer case 1 or between the back cover 3 and the outer case 1 may be performed by an insulator such as rubber packing.

  The battery 49 is a secondary battery that stores the electric power generated by the photovoltaic power generation means 6, and its outer can case is made of metal. The battery 49 is arranged in the direction of about 11:00, and occupies a place from about 10 o'clock to about 12:00. As shown in FIG. 16, the photovoltaic power generation means 6 is disposed between the battery 49 and the dial 21.

Two antennas, a first antenna 5A and a second antenna 5B, are provided as antennas. The first antenna 5A is arranged in the direction of about 4 o'clock, and the second antenna 5B is arranged in the direction of about 7 o'clock.
The first antenna 5 </ b> A and the second antenna 5 </ b> B are arranged in the movement 4 and close to the inner periphery of the outer case.
However, the middle frame 14 is located between the first antenna 5A and the second antenna 5B and the exterior case 1, and the first antenna 5A and the second antenna 5B and the exterior case 1 are separated by a predetermined distance. Yes.
The first antenna 5A and the second antenna 5B are formed by winding coils 52A and 52B around a high magnetic permeability member such as a rod-shaped ferrite, pure iron, or amorphous metal that forms the shaft cores 51A and 51B, as shown in FIG. As shown, the coil 52A of the first antenna 5A and the coil 52B of the second antenna 5B are connected in series.

As an example of the configuration in which the coils 52A and 52B are connected in series, a configuration in which the coils 4A and 52B are connected via the circuit board (not shown) held between the ground plate 46 and the train wheel bridge 47 in the movement 4, for example. It is done. For example, the coils 52A and 52B of the antennas 5A and 5B may be connected to the conductive pattern formed on the circuit board surface.
Note that the terminals of the crystal resonators 411, 412, and 413 and the terminals of the circuit block 42 may be connected to the conductive pattern of the circuit board to be electrically connected. Further, electrical components such as the circuit block 42 are mounted on the circuit board as an IC (integrated circuit), and other electrical components (antennas 5A, 5B, crystals 411, 412, 413, and a battery 49) are passed through the conductive pattern. And may be conducted.

  The axis 51A of the first antenna 5A has a circular cross section, and the axis of the second antenna 5B has a rectangular cross section. Further, the shaft core 51A of the first antenna 5A and the shaft core 51B of the second antenna 5B are laminated bodies in which a large number of thin plates of a high magnetic permeability member having a length in the axial direction are laminated. The thin plates are bonded to each other with an insulating adhesive such as epoxy.

The first antenna 5A and the second antenna 5B are provided such that the axial directions L _5A and L _5B are substantially parallel to the cylinder axis direction L ₁ of the outer case 1, and the end surfaces of the first antenna 5A and the second antenna 5B are The support substrate 62 and the back cover 3 are opposed to each other.
Here, the support substrate 62 is bent and formed so as to bulge slightly toward the back cover 3, and the back cover 3 bulges convexly toward the support substrate 62. The antenna shaft cores 51A and 51B are strongly sandwiched between the support substrate 62 and the back cover 3 when the first antenna 5A and the second antenna 5B are assembled. Then, the antenna shafts 51 </ b> A and 51 </ b> B are strongly pressed against the support substrate 62 and the back cover 3 by the restoring force of the support substrate 62 and the back cover 3.
Note that the end surfaces of the first antenna 5A and the second antenna 5B are not necessarily in contact with each other as long as they are sufficiently close to the support substrate 62 and the back cover 3.
In addition, the support substrate 62 and the back cover 3 are exemplified by being formed of the same material as the antenna shaft cores 51A and 51B in order to reduce the magnetic resistance with the antenna shaft cores 51A and 51B.

  An insertion hole 471 through which the first antenna 5A and the second antenna 5B are inserted is formed through the train wheel bridge 47.

The operation of the seventh embodiment having such a configuration will be described.
The current time of the time counter is updated by a reference clock generated by dividing the oscillation of the crystal oscillator 411. Further, the position of the hands (minute hand 221 and hour hand 222) is detected by the hand position detection circuit 426, and the detection result is output to the central control circuit 423. The pointer position is compared with the counter value of the time counter, and the piezoelectric actuator 48 is driven via the drive circuit 425 based on the comparison result. The driving of the piezoelectric actuator 48 is transmitted to the hands 221 and 222 via the wheel train 44, and the numbers on the time display surface 211 are indicated by the hands 221 and 222, so that the current time is displayed.

Next, a standard radio wave reception operation and a time correction operation based on standard radio time information will be described.
At 2:00 am, which is the reception start time set in the reception control circuit 424, a reception operation start command is output from the reception control circuit 424 to the reception circuit 421. Alternatively, when a forced reception operation is input by the external operation means 13, a reception start command is output from the reception control circuit 424 to the reception circuit 421.
Here, since the outer case 1 is open in the cylinder axis direction L ₁ , the magnetic field component of the standard radio wave enters the outer case 1 from this opening. At this time, the magnetic field of the standard radio wave is attracted to the support substrate 62 and the back cover 3 due to the high magnetic permeability of the support substrate 62 and the back cover 3. Then, the magnetic field attracted to the dial plate 21 and the back cover 3 passes through the shaft cores 51A and 51B of the antennas 5A and 5B and is linked to the coils 52A and 52B. The standard radio waves are received by the antennas 5A and 5B.
When receiving a reception start command, the receiving circuit 421 receives power supply from the battery 49 and starts decoding signals (time information) received by the antennas 5A and 5B.
The decoded time information is temporarily stored in the storage circuit 422, and the time information obtained by receiving a plurality of times (for example, six times) is compared before and after to determine the accuracy of reception. According to the correctly received time information, the current time of the time counter is corrected by the time correction circuit. Then, the hand position is corrected according to the time of the time counter, and the time according to the reception time is indicated.

  When light is irradiated toward the dial 21, the light passes through the windshield 23 and the dial 21 and enters the photoelectric conversion element 61. Then, photoelectric conversion is performed by the photoelectric conversion element 61 and electric power is generated. The generated electric power (current) is fed from the transparent electrode to the battery 49 and stored.

According to such 7th Embodiment, there can exist the following effects.
(23) Since the exterior case 1 is made of metal, a high-class feeling is produced. Further, since the standard radio wave from the tube axis direction L ₁ of the case 1 is received by the antenna 5A, 5B, does not affect the reception performance of the antenna 5A, 5B be the case 1 is formed of metal.

(24) Since both ends of the outer casing 1 in the cylindrical axis direction L ₁ are opened, the magnetic field of the standard radio wave can enter the metallic outer casing 1 from the opening of the outer casing 1 along the cylindrical axis L _1. . The axial directions L _5A and L _{5B of} the antennas 5A and 5B are substantially parallel to the cylinder axial direction L ₁ of the outer case 1. Then, since the magnetic field that has entered the outer case 1 passes through the shaft cores 51A and 51B arranged at the centers of the coils 52A and 52B, the standard radio waves are received by the antennas 5A and 5B. Furthermore, since the direction of the magnetic field entering the outer case 1 and the axial directions L _5A and L _5B of the antennas 5A and 5B are substantially parallel, the linkage flux to the antennas 5A and 5B is maximized, and the antenna The reception performance of 5A and 5B is dramatically improved.

(25) Since the two ends of the cylindrical axis L ₁ of the case 1 is opened, the magnetic field of the standard radio from the opening of the case 1 are possible ingress further antenna 5A, 5B in the axial direction L _5A, L _5B is along the magnetic field fluctuation direction entering the outer case 1. Therefore, the magnetic field of the standard radio wave entering the outer case 1 is directly linked to the antennas 5A and 5B, so that the reception performance of the antennas 5A and 5B is improved.
Since the reception performance of the antennas 5A and 5B is improved, sufficient reception strength is ensured even if the antennas 5A and 5B themselves are downsized. The radio-controlled timepiece 100 is downsized by downsizing the antennas 5A and 5B.
Further, since the axial directions L _5A and L _5B of the antennas 5A and 5B are substantially parallel to the cylindrical axis L ₁ of the exterior case, the size of the cross-sectional area of the antennas 5A and 5B affects the thickness of the exterior case 1. There is no. Therefore, for example, even when the interlinkage magnetic flux is increased by increasing the cross-sectional areas of the antennas 5A and 5B, the outer case 1 is formed sufficiently thin.

(26) The magnetic field of the standard radio wave is guided to the axes of the antennas 5A and 5B on the wide surface of the support substrate 62 and the back cover 3 formed of a high permeability member. As a result, the flux linkage of the antennas 5A and 5B is increased, and the reception performance of the antennas 5A and 5B is improved.

(27) Since the photoelectric conversion element 61 of the photovoltaic power generation means 6 is formed to be approximately the same size as the dial 21, the light receiving area is maximized in terms of the timepiece configuration, and the amount of power generation is increased. Even when the photovoltaic power generation means 6 is large, the standard radio waves are guided to the antennas 5A and 5B by the support substrate 62, so that the reception performance of the antennas 5A and 5B is further improved. Therefore, there is an epoch-making effect that the power generation amount is maximized and the reception performance of the antennas 5A and 5B is raised to the highest level in terms of the configuration of the watch.

(28) Since the antennas 5A and 5B are arranged in the direction of about 4 o'clock and about 7 o'clock and the reception time is set to 2:00 am, the hands 221 and 222 are placed on the axes of the antennas 5A and 5B at the reception time. Not located. Therefore, the pointers 221 and 222 do not affect the reception of the standard radio wave. As a result, the pointers 221 and 222 may be formed of metal, and the aesthetics are improved such as a high-quality design.

(29) Since the first antenna 5A and the second antenna 5B are connected in series, the reception performance is enhanced by adding the signals received by the first antenna 5A and the second antenna 5B.

(30) Since the piezoelectric actuator 48 does not generate a magnetic field even during driving, the reception performance of the antennas 5A and 5B is not affected even if the piezoelectric actuator 48 is disposed in the vicinity of the antennas 5A and 5B.
For example, when a stepping motor or the like that generates a magnetic field is used, if the support substrate 62 and the back cover 3 are formed of a high permeability member, the magnetic field generated from the stepping motor conducts the support substrate 62 and the back cover 3. As a result, it flows into the antennas 5A and 5B. However, since the piezoelectric actuator 48 that does not generate a magnetic field is used in this embodiment, no other noise (such as a magnetic field of a stepping motor) flows through the support substrate 62 and the back cover 3, and the support substrate 62 of a high permeability member. In addition, only the magnetic field of the standard radio wave is collected by the back cover 3. As a result, the magnetic field component of the standard radio wave is induced to the antennas 5A and 5B by the support substrate 62 and the back cover 3, and the reception performance of the antennas 5A and 5B is improved.

(31) Between the first antenna 5A and the battery 49, a switching unit (pointer correction unit) composed of the winding stem 131, the cannula 133, the mandarin duck 134, and the thumb wheel 135 is disposed, and between the second antenna 5B and the battery 49, A crystal resonator unit 41 and a circuit block 42 are disposed between them.
Here, since the outer can of the battery 49 is formed of metal, there is a possibility that the magnetic flux induced by the support substrate 62 and the back cover 3 is guided to the outer can of the battery 49 in the vicinity of the battery 49. Since the winding stem 131, the circuit block 42, and the like are arranged between the battery 49 and the antennas 5A and 5B, the battery 49 is separated from each other, and the interlinkage magnetic flux to the antennas 5A and 5B is sufficiently ensured. Is improved.

(32) The antenna shaft 51 is formed by laminating a number of thin plates insulated from each other by an epoxy resin. Therefore, the eddy current generated in each thin plate is reduced. When the magnetic field of the standard radio wave is induced by the support substrate 62 and the back cover 3, a very large amount of magnetic flux is linked to the antennas 5A and 5B, so that the iron loss may increase. However, since the generation of eddy currents is suppressed, iron loss is suppressed, and as a result, the reception performance of the antennas 5A and 5B is improved.

(Eighth embodiment)
Next, an eighth embodiment of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIGS. 18, 19, and 20. FIG.
FIG. 18 shows a plan view of the second embodiment viewed from the dial side, FIG. 19 shows a cross-sectional view taken along a straight line connecting the antennas, and FIG. 20 shows connection of the antennas.
The basic configuration of the eighth embodiment (basic structure, material of each member, etc.) is the same as that of the seventh embodiment, but the feature of the eighth embodiment is that the photovoltaic power generation means 6 is divided into a plurality of sheets. There is in point.

Although the photovoltaic power generation means 6 is provided similarly to 7th Embodiment, the photovoltaic power generation means 6 is comprised by three power generation blocks 6A-6C. One power generation block has a fan shape with a central angle of approximately 120 degrees, and includes a photoelectric conversion element 61 and a support substrate 62 as in the seventh embodiment. The photovoltaic power generation means is independent for each power generation block, that is, the photoelectric conversion element 61 and the support substrate 62 are separated for each power generation block. The three power generation blocks have substantially the same shape, and the three power generation blocks are arranged with their central angle portions close to each other, and are arranged in a circular shape as a whole.
Here, in FIG. 18, the first power generation block 6A is the power generation block arranged in the range from about 11:00 to about 3 o'clock, and the power generation block arranged in the range from about 3 o'clock to about 7 o'clock is the second power generation block 6B. The power generation block arranged in a range from approximately 7 o'clock to approximately 11 is defined as a third power generation block 6C.
The first power generation block 6A, the second power generation block 6B, and the third power generation block 6C are electrically connected in series, and the electric power (current) generated in each power generation block is combined in series and stored in the battery 49.

In the approximately 3 o'clock direction sandwiched between the first power generation block 6A and the second power generation block 6B, a date wheel (not shown) disposed on the opposite side of the dial 21 with the photovoltaic power generation means 6 in between is a character. A date window 212 that is visible from the plate 21 side is formed on the dial 21. The support substrate 62 of the first power generation block 6A and the second power generation block 6B is formed with a notch from the outer peripheral side so that the date number of the date wheel can be visually recognized through the date window 212.
The power generation blocks 6A to 6C are notched at the central angle portion, and the substantially central portion as a whole is a hole through which the pointer shaft is inserted.

The antenna, first antenna 5A, three is provided a second antenna 5B and the third antenna 5C, the axial direction L _{5A (5B, 5C)} of the antenna 5A~5C are in the cylinder axis direction L ₁ of the case 1 It is almost parallel.
The first antenna 5A is disposed in the approximately 1 o'clock direction, the second antenna 5B is disposed in the approximately 5 o'clock direction, and the third antenna 5C is disposed in the approximately 9 o'clock direction.
As shown in FIGS. 18 and 19, the antennas 5 </ b> A to 5 </ b> C are arranged such that one ends of the shaft cores 51 </ b> A to 51 </ b> C are brought into contact with the substantially central portions of the power generation blocks 6 </ b> A to 6 </ b> C.
The other ends of the antenna shafts 51A to 51C are in contact with a magnetic plate 7 formed of a high magnetic permeability member. The magnetic plate 7 is formed of a magnetic material such as stainless steel or a high magnetic permeability member such as pure iron, permalloy, cobalt, or an amorphous alloy of iron, like the support substrate 62. It is exemplified that the regulating lever to be stopped and the component cover that covers the lever component of the switching unit are shared. The magnetic plate 7 is provided for each of the antennas 5A to 5C and is separated from each other. Then, the magnetic wave of the standard radio wave is attracted by the magnetic plate 7.
The base frame elements of the back cover 3 and the movement 4 (for example, the base plate 46, the train wheel bridge 47, etc.) are made of a non-conductive and non-magnetic material. Further, the back cover 3 is provided with a recess 35 into which the magnetic plate 7 is fitted.

  The coils 52A, 52B, and 52C of the first, second, and third antennas 5A, 5B, and 5C may be connected in series as shown in FIG. 20 (A), or FIG. 20 (B). All may be connected in parallel as shown in FIG. Alternatively, the series connection and the parallel connection are used together, for example, the coil 52A of the first antenna 5A and the coil 52B of the second antenna 5B are connected in series, while the coil 52A and the coil 52B are connected to each other. The coils 52C of the three antennas 5C may be connected in parallel. Each coil may be connected in series or in parallel through a conduction pattern provided on the circuit board as in the seventh embodiment.

According to such 8th Embodiment, in addition to the effect (23)-(32) of 7th Embodiment, there can exist the following effect.
(33) Three antennas are provided, and the photovoltaic power generation means 6 is divided into three power generation blocks 6A to 6C according to the antennas 5A to 5C. Furthermore, the magnetic plates 7 are also separated from each other. Then, since the antennas 5A to 5C are independent from each other, the standard radio waves are received independently by the antennas 5A to 5C. Then, since it is sufficient that reception is successful by any of the antennas 5A to 5C, the probability of successful reception of the standard radio wave is improved.

(34) Since the magnetic field of the standard radio wave is induced by the support substrate 62 and the magnetic plate 7, the reception performance can be improved by receiving one antenna. Then, the time adjustment can be sufficiently performed based on the signal intensity received by one antenna, and it is only necessary to successfully receive the standard radio wave by any one of the antennas, so that the probability of successful reception is improved.

(35) Since the magnetic plate 7 is provided and a magnetic field of the standard radio wave is induced by the magnetic plate 7, the material of the back cover 3 may be freely selected. For example, as long as the back cover 3 is insulated from the metal outer case 1, it may be a high magnetic permeability member, a non-conductive and non-magnetic member such as inorganic glass or ceramic, or brass or a titanium alloy. A metal such as

(Modification 1)
A modification 1 according to the radio-controlled timepiece as an electronic timepiece with a wireless function of the present invention will be described.
The basic configuration of the first modification (the basic structure and the material of each member) is the same as that of the second embodiment, but is characterized in that the antenna shafts 51A and 51B and the dial 21 are integrally formed. Have

For example, in the example shown in FIG. 21, the dial 21 has a dial upper plate 217 with a decoration of the time display surface 211 on one side and a dial lower plate integrally joined to the lower surface of the dial upper plate 217. A plate 218. The dial upper plate 217 and the dial lower plate 218 are formed of a high permeability member. The antenna shaft 51 </ b> A is integrally formed so as to protrude continuously from the dial lower plate 218. Examples of the method for integrally forming the dial lower plate 218 and the antenna shaft 51 </ b> A include die casting and forging.
The dial upper plate 217 may be formed of a non-conductive and non-magnetic member, and may be, for example, inorganic glass, ceramic, or plastic.

  According to such a configuration, the dial lower plate 218 and the antenna shaft core 51A are integrated, thereby reducing the number of parts and improving the assemblability. Further, since there is no connection from the dial lower plate 218 to the antenna core 51A, the magnetic field of the standard radio wave guided by the dial lower plate 218 is linked to the antenna 5A as it is without resistance. As a result, the flux linkage of the antenna 5A is increased and the reception performance of the antenna 5A is improved.

When there are two antennas, the antenna shaft core may be formed integrally with the dial lower plate 218, or only one of the antenna shaft cores may be formed integrally with the dial lower plate 218. Good.
Further, since the antenna shaft core 51A, the dial plate 21, and the back cover 3 may be formed of a high magnetic permeability member, for example, the antenna shaft core 51A and the back cover 3 may be integrally formed. All of the dial plate 21 and the back cover 3 may be integrally formed. However, in order to efficiently perform the process of winding the antenna coil 52A around the antenna shaft 51A, it is desirable that only one of the dial 21 and the back cover 3 is integrally formed with the antenna shaft 51A.

(Modification 2)
Modification 2 of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIG.
The basic configuration of the modified example 2 is the same as that of the second embodiment, but the dial 21 and the back cover 3 are provided with a recess for fitting the end face of the antenna 5 at a position corresponding to the end face of the antenna 5. Characterized by points.
FIG. 22 is a diagram illustrating an antenna portion in a cross-sectional view of a main part of the second modification. Modification 2 includes an outer case 1 having both ends opened in the direction of the cylinder axis L ₁ , a cover glass (windshield) 23 made of inorganic glass or organic glass, a movement 4, an intermediate frame 14 made of plastic, and an outer case 1, a dial 21 disposed in one opening, a back cover 3 serving as a lid disposed in the other opening of the exterior case 1, and a dial 21 disposed on the exterior case 1. The dial 5 has a first fitting recess 219 into which one end of the antenna 5 is fitted. The antenna 5 has a second fitting recess 35 into which the other end of the antenna 5 is fitted.

The outer case 1 is made of a conductive metal such as brass, titanium alloy, stainless steel, or aluminum, and a movement 4 other than the antenna 5 is disposed in the outer case 1.
The dial 21 and the back cover 3 are formed of a high permeability member, and a magnetic field of standard radio waves can pass through the dial 21 and the back cover 3. The dial 21 and the back cover 3 are insulated from the outer case 1 by an intermediate frame 14 disposed therebetween.

  The dial 21 is provided with a first fitting recess 219 that opens toward the inside of the outer case 1. That is, the 1st fitting recessed part 219 is opened and provided toward the back cover 3 side. The depth of the first fitting recess 219 is formed to be deeper than half the thickness (T1) of the dial 21, and for example, the thickness of the thin portion extending from the bottom surface of the first fitting recess 219 to the other surface (time display surface). The length (t1) preferably satisfies the following formula.

  t1 ≦ T1 ÷ 2

  Furthermore, it is more preferable to satisfy the following formula.

  t1 ≦ T1 ÷ 3

The depth of the first fitting recess 219 is not particularly limited, and the thickness (t1) of the thin portion may be, for example, half or more of the thickness (T1) of the dial, and conversely the thickness of the thin portion. The lower limit of the length (t1) is not particularly limited, and the first fitting recess 219 may be formed deeply as long as the strength of the dial 21 can be maintained.
The opening area of the first fitting recess 219 is slightly larger than the cross-sectional area of the shaft core of the antenna 5. For example, the opening area of the antenna 5 can be inserted with the coil 52 wound around the shaft 51. It is. Further, the edge of the first fitting recess 219 is formed in a tapered shape whose diameter is increased outward.

  The back cover 3 is provided with a second fitting recess 35 that opens toward the inside of the outer case 1, that is, toward the dial 21. The depth of the second fitting recess 35 preferably satisfies the following expression with respect to the thickness (T2) of the back cover 3.

  t2 ≦ T2 ÷ 2

However, t2 is the thickness of the thin part from the bottom surface of the second fitting recess 35 to the other surface of the back cover 3.
Furthermore, it is more preferable to satisfy the following formula.

  t2 ≦ T2 ÷ 3

Note that the depth of the second fitting recess 35 is not particularly limited as in the description of the first fitting recess 219.
The opening area of the second fitting recess 35 is wide enough to insert the end of the antenna 5, and the edge of the second fitting recess 35 is formed in a taper shape whose diameter is increased outward.

The antenna 5 is disposed with the axial direction L ₅ substantially parallel to the cylinder axial direction L ₁ of the exterior case 1. In the antenna 5, one end surface of the shaft 51 is inserted into the first fitting recess 219 of the dial 21, and the end surface is in strong contact with the bottom surface of the first fitting recess 219. In the antenna 5, the other end surface of the shaft core 51 is inserted into the second fitting recess 35 of the back cover 3, and is strongly in contact with the bottom surface of the second fitting recess 35. At this time, the dial plate 21 and the back cover 3 are bent so as to slightly swell inward of the outer case 1, and the antenna 5 is sandwiched between the dial plate 21 and the back cover 3. As described in the seventh embodiment, the end surfaces of the first and second plates strongly abut against the dial plate 21 and the back cover 3.

According to such a configuration, the magnetic field of the standard radio wave is attracted by the dial plate 21 and the back cover 3 that are high permeability members, and the magnetic field of the standard radio wave is transmitted from the dial plate 21 and the back cover 3 to the antenna 5 to be linked. To do. Therefore, the reception performance of the antenna 5 can be improved by increasing the magnetic flux linked to the antenna 5.
Since the antenna 5 is sandwiched between the dial plate 21 and the back cover 3 with both ends of the antenna 5 being fitted into the first fitting recess 219 and the second fitting recess 35, the position of the antenna 5 is fixed. Is done.
Since the length of the antenna 5 can be increased by the depth of the first fitting recess 219 and the second fitting recess 35, the number of turns of the coil 52 can be increased by the amount that the antenna 5 can be lengthened. Then, since the ampere turn becomes large, the reception sensitivity of the antenna 5 is improved.

(Modification 3)
A third modification of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIGS.
The basic configuration of the third modification (basic structure and material of each member) is the same as that of the third embodiment, but the shape of the through holes 213 and 31 formed in the dial 21 and the back cover 3, and the penetration It is characterized by the shape of the high magnetic permeability members 215 and 33 fitted in the holes 213 and 31.
In FIG. 23, the through holes 213 and 31 formed in the dial 21 and the back cover 3 have a taper that increases the diameter of the through holes 213 and 31 outward. High permeability members 215 and 33 each having a taper corresponding to the shape of each of the through holes 213 and 31 are fitted into the through holes 213 and 31. The high magnetic permeability members 215 and 33 are strongly pressed against the end face of the antenna shaft core 51A (51B and 51C). For example, it is exemplified that the dial plate 21 is formed to be convexly curved toward the antenna shaft cores 51A to 51C, and the high magnetic permeability member 215 is pressed against the end surfaces of the antenna shaft cores 51A to 51C by the elastic force of this curve. The

  In FIG. 24, the dial 21 includes a dial upper plate 217 and a dial lower plate 218. Similarly to FIG. 23, the dial lower plate 218 and the back cover 3 are provided with through holes 213 and 31 whose diameter is increased outward. The high-permeability member 215 on the dial 21 side is integrally formed with the antenna shaft 51A (51B, 51C), that is, a high-permeability member 215 having a continuously increasing diameter is provided at one end of the antenna shaft 51A. It has been. The antenna shaft cores 51 </ b> A to 51 </ b> C are inserted from the larger diameter side of the through hole 213 of the dial lower plate 218. Further, a high permeability member 33 having a taper corresponding to the shape of the through hole 31 is fitted into the through hole 31 on the back cover 3 side.

  In such a configuration, the high magnetic permeability members 215 and 33 are increased in diameter toward the outside. That is, the high magnetic permeability members 215 and 33 are smoothly reduced in diameter toward the antenna shaft cores 51A to 51C. Then, the magnetic path connected from the high magnetic permeability members 215 and 33 to the antenna shaft cores 51A to 51C becomes continuous and smooth. Therefore, the magnetic field of the electromagnetic wave induced by the high magnetic permeability members 215 and 33 is continuously guided to the antenna shafts 51A to 51C without receiving much magnetic resistance. As a result, the flux linkages of the antennas 5A to 5C are increased, and the reception performance of the antennas 5A to 5C is improved.

(Modification 4)
Next, a fourth modification of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described.
In the third embodiment (FIG. 10), a case where through holes 213 and 31 are formed in the dial plate 21 and the back cover 3 and high permeability members 215 and 33 are fitted in the through holes 213 and 31 will be described. However, as a fourth modification, the dial 21 and the back cover formed of a non-conductive and non-magnetic member on the axis of the antenna 5 without forming the through holes 213 and 31 in the dial 21 and the back cover 3. 3, a high permeability member may be attached to the base plate 46 and the train wheel bridge 47.

Alternatively, the dial 21 and the back cover 3 may be provided with a concave portion that opens toward the inside of the watch body, and a high permeability member may be provided in the concave portion.
Further, in this case, the high magnetic permeability member and the antenna shaft 51 may be integrally formed.
For example, in FIG. 25 (A), the dial 21 and the back cover 3 are formed with recesses 219 and 35 that open inward. The dial 21 is made of inorganic glass or plastic, and the back cover 3 is made of inorganic glass or plastic. The antenna core 51 </ b> A has upper and lower end flanges 53 projecting in a flange shape from both ends in a direction substantially perpendicular to the axis, and the flange 53 is a recess 219, 35 of the dial 21 and the back cover 3. It is fitted in. Further, the base plate 46 and the train wheel bridge 47 are formed with a notch 461 cut out at a part of the outer periphery, and the antenna 5 is inserted through the notch 461. FIG. 25B shows a state in which the flange portion 53 is inserted into the cutout portion 461 of the main plate 46 and the train wheel bridge 47 from the outer peripheral side.
Even in such a configuration, the magnetic field of the standard radio wave is induced by the collar portion 53, the linkage flux of the antenna 5 is increased, and the reception performance of the antenna is improved.

(Modification 5)
Modification 5 of the radio-controlled timepiece as a wireless function-equipped electronic timepiece of the invention will be described with reference to FIGS. 26, 27, and 28. FIG.
Modification 5 has an antenna 5 as in the above embodiment, and is characterized in that a coil bobbin is used to attach the antenna 5.
In FIG. 26 (A), the radio-controlled timepiece 100 includes a main plate 46 on which movement components such as a driving means (motor) and a train wheel are mounted, a dial plate 21 disposed on both front and back sides of the main plate 46, and A back cover 3, an antenna 5 that receives a standard radio wave, and a magnetic plate 7 that induces a magnetic field of the standard radio wave are provided.

  The main plate 46, the dial plate 21, and the back cover 3 are formed of non-conductive and non-magnetic members such as inorganic glass or plastic. The base plate 46 has an insertion hole 464 into which the antenna 5 is inserted, a mounting recess 462 in which the antenna 5 is mounted and fixed on the surface on the back cover 3 side, and a magnetic plate 7 on the surface on the dial plate 21 side. Mounting recess 463.

The antenna 5 includes a coil bobbin 54, a core (axial core) 51, and a coil 52. As shown in FIG. 26 (B), the coil bobbin 54 is a non-conductive and non-magnetic member, for example, a cylindrical member having a cylindrical hole 543 formed of plastic and having a cylindrical shape around which the coil 52 is wound. A body portion 542 and a flange portion 541 projecting from the body portion 542 in a flange shape are provided. Then, the core 51 is inserted into the cylindrical hole 543 of the coil bobbin 54, and the coil 52 is wound around the body portion 542.
The magnetic plate 7 is a plate-like body formed of the same high permeability member as described above.

  The antenna 5 is inserted into the insertion hole 464 of the ground plate 46, and is fixedly attached to the ground plate 46 by the set screw 8 in a state where the flange portion 541 is fitted in the mounting recess 462. The magnetic plate 7 is mounted on the mounting recess 463 from the dial plate 21 side, and the ground plate 46 and the magnetic plate 7 are bonded and fixed in a state where the magnetic plate 7 and the core 51 are in close contact with each other. The magnetic plate 7 may be bonded to the core 51 or the bobbin 54 instead of the ground plate 46.

  According to such a configuration, the antenna 5 can be easily attached and fixed to the ground plane 46 by the coil bobbin 54. Further, the magnetic wave of the standard radio wave is induced by the magnetic plate 7 and a large amount of magnetic flux is linked to the core 51 of the antenna 5, so that the reception performance of the antenna 5 is improved.

  In FIG. 26, the core 51 and the magnetic plate 7 are separate from each other. However, as shown in FIG. 27, the core 51 and the magnetic plate 7 may be integrally formed by injection molding or the like. If the core 51 and the magnetic plate 7 are integrated as described above, the number of parts can be reduced and the assembly can be simplified.

  Alternatively, as shown in FIG. 28A, the magnetic plates 7 may be integrally provided on both end surfaces of the core 51. In such a case, as shown in FIG. 28B, a slit 544 is formed in the coil bobbin 54, and the slit 554 of the coil bobbin 54 is expanded using the elasticity of plastic, and the core is formed from the slit 544 whose gap is widened. 51 may be fitted into the coil bobbin 54. After the core 51 is fitted in the coil bobbin 54 as described above, the coil 52 is wound around the coil bobbin 54 and the coil bobbin 54 is attached to the main plate 46 as shown in FIG.

(Modification 6)
A modification 6 according to the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described.
The basic configuration (basic structure, material of each member, etc.) of Modification 6 is the same as that of the first embodiment, but is characterized in that the outer case includes a metal thin plate cover.
In FIG. 29, the radio-controlled timepiece 100 includes an exterior case 1, a back cover 3, a dial 21, a windshield 23, a movement 4, and an antenna 5.
The exterior case 1 has a configuration in which a metal thin plate cover 162 is externally fitted to a base 161 formed of a non-conductive and non-magnetic member such as plastic.
The back cover 3 is formed of a non-conductive and non-magnetic member such as plastic, and the engagement hook 36 erected on the outer edge engages with the engagement recess 163 of the exterior case 1 to engage with the exterior case 1. It has been stopped.
In such a configuration, even if the outer case 1 has the metal thin plate cover 162 on the outer surface, the antenna 5 can receive the standard radio wave entering the outer case 1 from the opening of the outer case 1. Therefore, high-quality decorativeness is obtained by the metal thin plate cover 162 and good reception performance is ensured.

(Modification 7)
A modification 7 according to the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described.
The basic configuration of the modified example 7 (basic structure and material of each member) is the same as that of the first embodiment, but is characterized in that the time display means displays the time by digital display.
30, the radio-controlled timepiece 100 includes an exterior case 1, a time display means 2, a windshield 23, a back cover 3, a parting ring 18, a timepiece module 9 having a timepiece circuit, an antenna 5, and the like. It has.
The outer case 1 is a metal case similar to that described above, and has a stepped portion 17 that is formed to protrude from the inner peripheral surface. The windshield 23 and the back cover 3 are made of non-conductive and non-magnetic inorganic glass or plastic.
The time display means 2 displays the time by digital display on a liquid crystal display (LCD). The time display means 2 is surrounded and fixed by the stepped portion 17.
The parting ring 18 is provided between the stepped portion 17 and the windshield 23 so that the outer edge of the time display means 2 cannot be seen through the windshield 23. The parting ring 18 may be formed of a non-conductive and non-magnetic member such as plastic, or may be formed of a metal member.
The back cover 3 is screwed to the outer case 1.

Here, when the parting ring 18 is made of metal, as an extension of the axis L ₅ of the antenna 5 does not intersect the parting ring 18, the antenna 5 is disposed further inside the inner edge of the parting ring 18 It is preferable. Then, the standard radio wave is received by the antenna 5 without being blocked by the parting ring 18.

(Modification 8)
Modification 8 of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described with reference to FIG.
The basic configuration of the modified example 8 (basic structure and material of each member) is the same as that of the first embodiment, but the back cover includes a glass plate portion, and a metal ring is provided on the back surface of the dial. ing.
31A is a main cross-sectional view of Modification 8, FIG. 31B is a plan view seen from the dial side, and FIG. 31C is a plan view seen from the back cover side.
In FIG. 31, the radio-controlled timepiece 100 includes an exterior case 1, a dial 21, a movement 4, a back cover 3, and an antenna 5.
The dial 21 is made of a non-conductive and non-magnetic member and has a semi-translucency. As shown in FIGS. 31A and 31B, a metal ring 19 is attached to the outer peripheral portion of the dial 21 on the side opposite to the time display surface 211. The metal ring 19 has an effect of improving the decorativeness by increasing the light reflectance of the dial 21. The metal ring 19 may be provided on the time display surface 211 side.

The back cover 3 includes a ring-shaped ring edge portion 37 formed of a metal member, and a glass plate portion 38 as a magnetic field passable portion fitted inside the ring edge portion 37.
As shown in FIGS. 31A to 31C, the antenna 5 is disposed so as to overlap with the plane of the glass plate portion 38 of inorganic glass. That is, when the antenna 5 and the glass plate portion 38 are projected from the time viewing direction, the projection image of the antenna 5 is included in the projection image of the glass plate portion 38.
The glass plate portion 38 is preferably a circle centered on the center of the watch (for example, the pointer shaft) from the viewpoint of aesthetics, but only the portion corresponding to the antenna 5 is configured by the glass plate portion 38. Also good.
And this glass plate part 38 functions as a magnetic field passage part.
Further, the area of the glass plate portion 38 is preferably at least larger than the area of the end face of the antenna 5 and more than twice the area of the end face of the antenna 5.
Further, it is preferable that the extension line of the axis of the antenna 5 does not intersect the metal ring 19.

  According to such a configuration, the standard radio wave is received by the antenna 5 through the glass plate part 38 which is a magnetic field passable part. Further, since the extension line of the axis of the antenna 5 does not intersect the metal ring 19 but intersects the dial plate 21 as the magnetic field passing portion, the antenna 5 does not shield the standard radio wave from the metal ring 19. A standard radio wave is received.

(Modification 9)
Modification 9 according to the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described.
Modification 9 is characterized by the aspect ratio of the antenna (or antenna core) when the antenna is provided as in the above embodiment.
In FIG. 32, the antenna 5 is shown, and the inner diameter D of the antenna core 51 is longer than the height H of the antenna core 51.
Here, the inner diameter D of the antenna core 51 is defined in the time viewing direction, that is, in a cross section orthogonal to the cylinder axis of the outer case 1. Further, the height H of the antenna core 51 is defined in the length in the time viewing direction, that is, in the direction parallel to the cylinder axis L ₁ of the outer case 1. The same applies when the axial direction of the antenna 5 is inclined with respect to the cylinder axis of the outer case 1.
In such a configuration, in a wristwatch in which the thickness of the watch cannot be increased so much, the linkage flux can be increased by making the inner diameter D of the coil core 51 larger than the height H. As a result, the reception performance of the antenna 5 can be improved. Moreover, if the height H of the antenna core 51 is reduced, the thickness of the radio-controlled timepiece 100 can be reduced.
Of course, as shown in the above embodiment, the length (vertical length) of the antenna 5 in the axial direction may be longer than the diameter (horizontal width) in a cross section orthogonal to the axial direction. .

(Modification 10)
A modification 10 of the radio-controlled timepiece as an electronic timepiece with a wireless function according to the present invention will be described.
Modification 10 is a modification of the seventh and eighth embodiments in which the support substrate 62 of the photovoltaic power generation means 6 is formed of a high magnetic permeability member. As a modification, the support substrate 62 of the photovoltaic power generation means 6 may be formed of a nonconductive and nonmagnetic member such as plastic such as polyimide resin, inorganic glass, ceramic, paper, etc. A conversion element 62 may be provided. And such a support substrate 62 becomes a magnetic field passage part.

Of course, the radio-controlled timepiece of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
In the above embodiment, the number of antennas 5 is not particularly limited, and may be one or more. When a plurality of antennas 5 are used, antenna coils may be connected in series or connected in parallel. Alternatively, series connection and parallel connection may be used in combination.
When using a plurality of antennas 5, some of the antennas 5 are arranged so that their axes are substantially parallel to the cylinder axis of the outer case 1 as described in the above embodiment, and the axes of the other antennas 5 are arranged as cylinders of the outer case. You may arrange | position substantially orthogonally to an axis | shaft.

  Of course, the shape of the outer case 1 is not limited to a short cylindrical ring, and may be, for example, a short cylindrical shape such as a substantially rectangular shape, an octagonal shape, or a rectangular shape. Further, the outer case 1 may be integrated after the outer peripheral side and the inner peripheral side are formed by separate parts, or may be integrated after the glass edge part and the body part are formed by separate parts. It may be a thing to become.

The outer case 1 is not limited to the one having both ends opened in the axial direction, and may be, for example, a ring-shaped body portion integrally provided with a bottom plate (bottomed tubular shape). That is, the outer case 1 and the back cover 3 may be integrally formed (one-piece type).
In this case, it is preferable that the portion of the back cover 3 facing the core of the antenna 5 is made of inorganic glass or plastic. This inorganic glass or plastic becomes a magnetic field passable part.

  In the second embodiment, when the outer case 1 is insulated from the dial 21 and the back cover 3, only the inner surface of the outer case 1 is formed of a non-conductive member without the intermediate frame 14. Also good.

  The case has been described in which the scheduled reception time is set to 2:00 am and the antenna 5 is arranged at a position where the pointer and the antenna 5 do not overlap at the scheduled reception time. However, when the reception is started by the forced reception operation, When the antenna 5 overlaps, an avoidance motion for shifting the pointer from the axis of the antenna 5 may be automatically performed.

  Of course, in the second embodiment, a stepping motor may be used instead of the piezoelectric actuator. In this case, the driving of the stepping motor may be stopped while the standard radio wave is received by the antenna.

In the seventh embodiment, the driving means is not limited to the piezoelectric actuator 48, and may be, for example, a stepping motor.
The main plate 46 and the train wheel bridge 47 have been described as non-conductive and nonmagnetic plastics or ceramics. May be a metal such as brass.

  Since both the support substrate 62 and the antenna shaft 51 are formed of a high magnetic permeability member, they may be integrally formed. In other words, the antenna core 51 may be continuously formed so as to protrude from the support substrate 62.

Not limited to the case axis L ₅ of the antenna 5 is substantially parallel to the cylindrical axis L ₁ of the case, for example, an extension of the axis L ₅ of the antenna 5 it is sufficient to pass through the opening of the case 1. Then, the standard radio wave is attracted to the support substrate 62 without being shielded by the body portion of the outer case 1 and can be linked to the antenna 5 as it is. Further, since the end surface of the antenna 5 only needs to face the support substrate 62 disposed in the opening of the exterior case 1, the support substrate 62 is bent or curved toward the inside of the exterior case 1. When the antenna 5 has a shape, the direction of the axis L ₅ of the antenna 5 is not particularly limited as long as the antenna 5 is disposed to face the support substrate 62. For example, the axis L ₅ of the antenna may be perpendicular to the cylindrical axis L ₁ of the case 1.
Further, since it is only necessary to be able to conduct magnetically between the support substrate 62 and the antenna 5, even when the support substrate 62 and the end surface of the antenna 5 are separated from each other, between the support substrate 62 and the end surface of the antenna 5. It suffices if magnetic conduction means is provided in the. The magnetic conduction means may be a magnetic conduction member formed of a high permeability member or the like, one end of which contacts the support substrate 62 and the other end contacts the end surface of the antenna shaft 51.

In the eighth embodiment, the antennas 5A, 5B, 5C, the support substrate 62, and the magnetic plate 7 are formed as separate bodies. However, the antenna shaft cores 51A, 51B, 51C, the support substrate 62, and the magnetic plate 7 are both highly transparent. For example, the antenna shafts 51A and 51B and the support substrate 62 may be formed integrally, or the antenna shaft 51 and the magnetic plate 7 may be formed integrally. Good.
Moreover, although the photovoltaic power generation means 6 and the antenna 5 were each provided 3 each and demonstrated the case where it respond | corresponds one to one, for example, even if the photovoltaic power generation means 6 is isolate | separated into 4 or 5 blocks, In addition, two or three antennas 5 may be provided corresponding to the block of one photovoltaic power generation means 6.
Although the case where the photovoltaic power generation means 6 is separated into three has been described, for example, the photoelectric conversion element 61 may be a single piece and the support substrate 62 may be separated into three.
Furthermore, the photovoltaic power generation means 6 is not limited to the configuration described in the above embodiment, and may have a mechanism for receiving light and generating power.

In each embodiment, the shaft core (core) 51 of the antenna 5 may be formed of a thin plate amorphous metal (for example, cobalt-based or iron-based amorphous metal) wound in a spiral shape. At this time, it is preferable that the center line of the spiral coincides with the axis of the antenna 5. According to such a configuration, since the magnetic flux easily passes through the axis (core), the reception performance of the antenna is improved.
Although the case where the antenna 5 includes the shaft core (magnetic core) 51 has been described, the antenna 5 may be a coreless antenna without the shaft core.
The photovoltaic device 6 may be provided in place of the back cover 3, and the photovoltaic device 6 may be disposed at both ends of the outer case 1.

In the second modification, in addition to the case where the dial 21 and the back cover 3 are formed of a high magnetic permeability member as described above, both the dial 21 and the back cover 3 are made of brass, titanium (or titanium alloy), stainless steel. It is good also as electroconductive metals, such as steel and aluminum. In this case, it is preferable that the dial 21 and the back cover 3 are insulated from the outer case 1. When the dial 21 and the back cover 3 are made of conductive metal, the standard radio wave reaches the antenna 5 through the thin portion of the first fitting recess 219 and the thin portion of the second fitting recess 35.
In the said embodiment, although the exterior case 1 was formed with the metallic member, the material of the exterior case 1 is not necessarily limited. For example, it may be formed of a nonmagnetic and nonconductive member such as plastic or ceramic.
The exterior case 1 is not limited to the case where both end surfaces in the axial direction are open, and may be, for example, a case in which a bottom plate is integrally provided on a ring-shaped body (bottomed tubular shape). Moreover, the exterior case 1 is not limited to metallicity, and may be formed of, for example, a synthetic resin.
In the above embodiment, the dial 21, the back cover 3, the base plate 46, the train wheel bridge 47 and the like are preferably formed of non-conductive and non-magnetic members so as not to shield radio waves. Need only have non-conductivity.
Alternatively, in some cases, the dial 21 and the back cover 3 may be formed of a non-magnetic but conductive member such as brass or aluminum. In this case, it is preferable that the dial 21 and the back cover 3 are insulated from the exterior case 1. This is because, depending on the nature of the electric field of the radio wave, the reception performance of the antenna 5 may be improved by drawing the electric field component of the radio wave with brass or aluminum. In such a case, it is preferable to make the position corresponding to the antenna thin on the dial or back cover so that the standard radio wave is easily conducted.

As an example of a radio wave received by an antenna of an electronic timepiece with a wireless function, a standard radio wave including time information (time code) at a frequency of 40 kHz to 77.5 kHz is given as an example. In addition, radio information at a frequency of 125 kHz to 135 kHz is used. It may be radio waves including radio waves in other frequency bands. Further, a radio wave transmitted from a wireless IC tag (RFID) may be received by an antenna of an electronic timepiece with a wireless function.
Examples of wireless information received by an antenna include weather forecast, stock information, event information, sales information, and the like. These pieces of information may be received by an antenna of an electronic timepiece with a wireless function when passing through a ticket gate of a station or an event park gate connected to an external network. And a control part decodes these information, for example, performs operation control so that to-be-controlled parts, such as a time display means, perform predetermined operation | movement. For example, the control unit displays the time on the time display means if the radio wave is a standard radio wave, or displays the information on a predetermined display means if the radio wave information is weather forecast or stocking information, etc. Perform control action.
The present invention may be any watch such as a wristwatch, a table clock, a wall clock, a clock installed outdoors in a street or a park, or an electronic device having a clock part, particularly a portable electronic device such as a mobile phone or A PDA (Personal Digital Assistant portable information terminal), a pager (portable wireless call receiver), or the like may be used.

  The present invention can be used for an electronic timepiece with a wireless function, for example, a radio-controlled timepiece.

The top view of 1st Embodiment which concerns on the electronic timepiece with a wireless function of this invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1 in the first embodiment. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1 in the first embodiment. The figure which shows the structure of a circuit block in the said 1st Embodiment. The figure which shows the connection of an antenna in the said 1st Embodiment. The top view of 2nd Embodiment which concerns on the electronic timepiece with a wireless function of this invention. Sectional drawing in the said 2nd Embodiment in the VII-VII line in FIG. The figure which shows the connection of an antenna in the said 2nd Embodiment. The top view of 3rd Embodiment which concerns on the electronic timepiece with a radio | wireless function of this invention. The fragmentary sectional view in the said 3rd Embodiment. The top view of 4th Embodiment which concerns on the electronic timepiece with a wireless function of this invention. The fragmentary sectional view of 5th Embodiment which concerns on the electronic timepiece with a wireless function of this invention. The top view of 6th Embodiment which concerns on the electronic timepiece with a wireless function of this invention. The top view of 7th Embodiment which concerns on the electronic timepiece with a wireless function of this invention. FIG. 15 is a cross-sectional view taken along line XV-XV in FIG. 14 in the seventh embodiment. FIG. 15 is a cross-sectional view taken along line XVI-XVI in FIG. 14 in the seventh embodiment. The figure which shows the structure of a circuit block in the said 7th Embodiment. The top view of 8th Embodiment which concerns on the electronic timepiece with a wireless function of this invention. Sectional drawing of the principal part in the said 8th Embodiment. The figure which shows the connection of an antenna in the said 8th Embodiment. The figure which shows the example which integrated the dial plate and the antenna shaft core as the modification 1 which concerns on the electronic timepiece with a wireless function of this invention. Sectional drawing of the principal part of the modification 2 which concerns on the electronic timepiece with a wireless function of this invention. The figure which shows the example regarding the shape of the through-hole formed in a dial plate and a back cover, and the shape of a high magnetic permeability member in the modification 3 which concerns on the electronic timepiece with a wireless function of this invention. The figure which shows the example which integrally forms a high-permeability member in the antenna axial core in the said modification 3. FIG. The figure which shows the structure regarding the shape of an antenna axial center, and the recessed part of a dial and a back cover in the modification 4 which concerns on the electronic timepiece with a wireless function of this invention. The figure which shows the modification 5 which concerns on the electronic timepiece with a wireless function of this invention. The figure which shows the structure which integrates a core and a magnetic board in the said modification 5. FIG. The figure which shows the structure which integrates a magnetic board in the both ends of a core in the said modification 5. FIG. FIG. 16 is a diagram showing a configuration in which a metal cover is provided on the surface of an exterior case in Modification 6 according to the electronic timepiece with a wireless function of the invention. The figure which shows the structure which makes a time display means a liquid crystal display panel in the modification 7 which concerns on the electronic timepiece with a wireless function of this invention. The figure which shows the structure which has a glass plate part as a magnetic field passage possible part in the modification 8 which concerns on the electronic timepiece with a wireless function of this invention. In Modification 9 according to the electronic timepiece with a wireless function of the invention, it is a diagram showing the relationship between the inner diameter and the height of the antenna.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Exterior case 11, 12 ... Mounting part, 13 ... External operation means, 131 ... Winding stem, 132 ... Crown, 133 ... Kannuki, 134 ... Ganoderma, 135 ... Tsumami wheel, 14 ... Middle frame, 15 ... Dial ring, 151 ... Projection, 161 ... Base, 162 ... Metal cover, 163 ... Engagement recess, 17 ... Step, 18 ... Parting ring, 19 ... Metal ring, 2 ... Time display means, 21 ... Support substrate, 21 ... Dial, 211A to C ... Time display surface, 212 ... Sunlight, 213 ... Through hole, 214 ... Step, 215 ... High permeability member, 216 ... Flange, 217 ... Dial plate upper plate, 218 ... Dial plate lower plate 219: Recess, 221, 221A ... Minute hand, 222, 222A ... Hour hand, 223, 223C ... Second hand, 23 ... Windshield, 3 ... Back cover, 31 ... Through hole, 32 ... Step, 33 ... High permeability member, 34 ... Flange , 35 ... recess, 36 ... engagement hook, 37 ... ring edge, 38 ... glass plate part, 4 ... movement, 41 ... crystal oscillator unit, 411, 412, 413 ... crystal oscillator, 42 ... circuit block, 421 ... Reception circuit, 422 ... Storage circuit, 423 ... Central control circuit, 424 ... Reception control circuit, 425 ... Motor drive circuit, 426 ... Needle position detection circuit, 43, 43A, 43B, 43C ... Stepping motor, 431A, 431B ... Drive Coil, 432A, 432B ... stator, 433A, 433B ... rotor, 44, 44A, 44B, 44C ... train wheel, 441 ... hour wheel, 442 ... minute hand shaft, 444 ... second wheel, 445 ... back wheel, 446 ... small iron wheel , 45 ... Date wheel, 451 ... Date wheel holder, 46 ... Ground plate, 461 ... Notch, 462 ... Mounting recess, 463 ... Mounting recess, 464 ... Insertion hole, 47 Train wheel bridge, 471 ... insertion hole, 48 ... piezoelectric actuator, 481 ... reinforcing plate, 482 ... convex portion, 483 ... piezoelectric element, 49 ... battery, 5, 5A, 5B, 5C ... antenna, 51, 51A, 51B, 51C ... Antenna core (core), 52, 52A, 52B, 52C ... Coil, 53 ... Saddle, 54 ... Coil bobbin, 541 ... Flange, 542 ... Body, 543 ... Tube hole, 544 ... Slit, 6 ... Photovoltaic power generation It means, 6A-6C ... power block, 61 ... photoelectric conversion element, 62 ... supporting substrate, 7 ... magnetic plate, 8 ... setscrew, 100 ... radio-controlled timepiece, the cylinder axis direction of L ₁ ... outer case, L _5A, L _5B : Antenna axial direction.

Claims (4)

A short cylindrical exterior case having a metal part at least on the outer peripheral surface and having at least one of both ends opened in the cylindrical axis direction;
A time display means having a dial disposed on the one opening side of the outer case;
A windshield disposed on the one opening side;
A movement with at least a control unit and a main plate,
Coil is constructed by winding the axis of the rod-shaped, an antenna for receiving a radio wave is disposed at a position spaced from the inner peripheral surface of the outer case,
A metal back cover that is disposed on the other opening side of the outer case and closes the opening;
An electronic wristwatch with a wireless function,
The dial and the windshield are made of non-conductive and non-magnetic members,
The base plate is made of a non-conductive and non-magnetic member, and an insertion hole penetrating the dial side and the back cover side is formed.
The coil of the antenna is disposed in the insertion hole of the ground plane ,
An electronic wristwatch with a wireless function. An electronic wristwatch with a wireless function according to claim 1,
The antenna is also disposed in a recess provided in the back cover side of the ground plate around the insertion hole.
An electronic wristwatch with a wireless function. An electronic wristwatch with a wireless function according to claim 2,
The antenna is fixedly attached to the recess,
An electronic wristwatch with a wireless function. An electronic wristwatch with a wireless function according to any one of claims 1 to 3 ,
The time display means includes a metal minute hand that rotates on the dial,
The antenna is in a position that may overlap with the minute hand provided in the time display means during normal hand movement, and further planar with the minute hand during reception of the radio wave at a predetermined reception time controlled by the control unit. Placed in a position that does not overlap
An electronic wristwatch with a wireless function.

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