JP2012189481A - Antenna built-in electronic timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna built-in electronic timepiece capable of arranging an auxiliary magnetic member at a position having fewer restrictions in arrangement and size.SOLUTION: A radio controlled timepiece 1 includes: an exterior case 20; a dial plate 14 arranged in the exterior case 20; a dial ring 25 arranged at a front face side of the dial plate 14; an antenna 100 arranged at a rear face side of the dial plate 14; and an auxiliary magnetic member 61. The antenna 100 comprises an antenna core 110 formed longitudinally by a magnetic material and a coil 120 wound around the antenna core 110. The auxiliary magnetic member 61 is magnetically coupled to the antenna core 110, and is arranged in the dial ring 25.

Description

  The present invention relates to an antenna built-in electronic timepiece having a built-in antenna for receiving radio waves transmitted from the outside.

2. Description of the Related Art Conventionally, an electronic timepiece with a built-in antenna that receives a radio wave including time information from the outside with an antenna and performs processing such as time correction is known.
In such an electronic timepiece with a built-in antenna, in addition to the antenna, various parts such as a motor and a train wheel for realizing the clock function are arranged, so the antenna is arranged so as not to interfere with these parts. There is a need to. Therefore, along with the recent downsizing and higher functionality of radio timepieces, the magnetic field strength of standard radio waves entering the antenna has decreased due to the reduction in the core shape of the antenna or the proximity of other movement parts and exterior parts to the antenna. There is a risk.
Furthermore, a part of the magnetic field that is received by the standard radio wave and resonated by the antenna enters a nearby movement part or exterior part, and an eddy current is generated, and the reception sensitivity may be significantly lower than the sensitivity of the antenna alone. For this reason, a method for improving the strength of the magnetic field entering the antenna and a method for reducing the influence of adjacent components on the antenna are known (for example, see Patent Document 1).
The timepiece described in Patent Document 1 uses a sub-magnetic member that collects and passes a magnetic field resonated by an antenna as a method of reducing the influence of adjacent components on the antenna. The sub-magnetic member is fixed to the inner peripheral surface of the main body case with an insulating double-sided adhesive tape, and an antenna is disposed on the inner peripheral surface with the double-sided adhesive tape. As a result, eddy current loss due to the magnetic field contained in the exterior component can be reduced to ensure reception sensitivity.
Here, the radio wave includes, for example, a long wave standard wave transmitted from a standard wave base station.

JP 2010-85109 A

  However, in the configuration using the secondary magnetic member as described in Patent Document 1, the size of the secondary magnetic member can be restricted as the radio timepiece is downsized, and the effect is reduced. In addition, since the effect of the secondary magnetic member depends on the positional relationship between the secondary magnetic member and the antenna core, a fixing method with little relative positional fluctuation is required.

  Further, the internal space of the watch is generally limited, and if the sub-magnetic member is fixed and arranged near the antenna, it may interfere with other components. For this reason, the sub-magnetic member must be arranged so as not to interfere with other constituent members, and there is a problem that the arrangement position and size of the sub-magnetic member increase.

  An object of the present invention is to provide an electronic timepiece with a built-in antenna in which a sub-magnetic member can be arranged at a position where there are few restrictions on the arrangement position and size.

  An electronic timepiece with built-in antenna according to the present invention includes an exterior case, a dial disposed in the exterior case, a dial ring disposed on the front side of the dial, and an antenna disposed on the back side of the dial. And an auxiliary magnetic member, and the antenna includes an antenna core formed in a longitudinal shape with a magnetic material, and a coil wound around the antenna core, and the auxiliary magnetic member is magnetically applied to the antenna core. It is combined, It is arrange | positioned in the said dial ring, It is characterized by the above-mentioned.

Here, examples of the configuration in which the secondary magnetic member is magnetically coupled to the antenna core include a configuration in which the secondary magnetic member is magnetically coupled to both ends of the antenna core.
When the secondary magnetic member is affixed to the antenna core surface as in Patent Document 1, interference with other parts must be taken into consideration, and the arrangement position and size of the secondary magnetic member increase.
On the other hand, according to the present invention, since the magnetic member is arranged in the dial ring, there is no interference with other parts, the arrangement position and the size are reduced, and the internal space of the dial ring is effectively used. Available. In addition, since the secondary magnetic member can be incorporated in or attached to the dial ring, the assembly of the timepiece can be improved compared to the case where the secondary magnetic member is attached to the antenna.

  In the present invention, it is preferable that a recess is formed on the back surface of the dial ring, and the sub-magnetic member is housed in the recess.

  If the concave portion is formed on the dial ring on the side of the secondary magnetic member, the position of the secondary magnetic member can be set accurately. For this reason, a submagnetic member can also be arrange | positioned in a predetermined position with respect to the antenna coil of the antenna or the said antenna core, and a submagnetic member and an antenna core can be magnetically coupled reliably.

  In the present invention, it is preferable that the end portion of the sub-magnetic member is disposed at a position overlapping the antenna coil of the antenna in a plan view when the timepiece is viewed from the surface side.

Here, the overlapping position in a plan view of the timepiece when viewed from the front side means a position where the end of the secondary magnetic member and the antenna core or antenna coil appear to overlap when the timepiece is viewed from the cover glass side. To do. That is, the end portion of the secondary magnetic member and the end portion of the antenna core or the antenna coil are arranged at positions that overlap in the thickness direction of the timepiece.
According to such a configuration, the distance between the sub-magnetic member and the antenna core can be minimized, and the magnetic coupling can be enhanced.

  In the present invention, the dial is composed of a translucent member, and a solar panel is disposed on the back surface of the dial. The solar panel includes a substrate and a light receiving portion formed on the substrate. Preferably, the substrate has a substrate outer peripheral portion outside the light receiving portion of the substrate, and the dial ring covers the substrate outer peripheral portion of the solar panel.

  According to such a configuration, even if the dial is translucent, the outer peripheral portion of the solar panel disposed on the back side of the dial can be covered with the dial ring. Therefore, the outer peripheral portion of the substrate that is not supposed to be visually recognized from the outside is not visually recognized, so that the appearance can be improved.

  In the present invention, the sub-magnetic member is preferably formed of an amorphous foil.

  As the amorphous foil, various amorphous metal foils such as cobalt-based amorphous metal and iron-based amorphous metal magnetic material can be used. If the submagnetic member is formed of an amorphous foil, for example, impact resistance and workability can be improved as compared with the case of forming the submagnetic member with ferrite or the like. This is because when ferrite is thin, it has a characteristic of being easily broken, whereas amorphous foil is difficult to break and has a characteristic of being easily bent.

  In the present invention, the sub-magnetic member includes a sub-magnetic member main body housed in the recess of the dial ring, and a protruding portion that protrudes from the sub-magnetic member main body toward the antenna core. It is preferable that an insertion portion into which the protruding portion is inserted is formed.

  According to such a configuration, since the sub magnetic member is provided with the protruding portion that protrudes toward the antenna core, the distance between the sub magnetic member and the antenna core can be made closer, and the sub magnetic effect is also adjusted by the distance. it can.

In the present invention, it is preferable that at least a part of the sub-magnetic member is inserted in the dial ring.
In such an invention, since the secondary magnetic member is inserted in the dial ring that covers the outer peripheral appearance of the solar panel that can be seen through the dial, the distance between the antenna held by the movement and the secondary magnetic member can be reduced. It is possible to prevent inconveniences in which the inductance value fluctuates due to fluctuations and the tuning frequency shifts and the reception performance deteriorates, and inconvenience that the magnetic field resonated by the antenna is dispersed and the effect of reducing eddy current loss is diminished. Therefore, the tuning frequency of the antenna can be maintained at the set value, and reception performance can be improved in this respect. Furthermore, since the secondary magnetic member is inserted into the dial ring, impact from the outside can be reduced when the watch is dropped, damage to the secondary magnetic member can be prevented, and impact resistance is improved. In particular, when the secondary magnetic member is formed of an amorphous thin film that is vulnerable to impact, even if the impact is applied due to, for example, dropping of an electronic timepiece, the secondary magnetic member is protected by the dial ring, so that the secondary magnetic member can be prevented from being damaged.
In addition, since the sub-magnetic member is inserted into the dial ring, there is no need to assemble the sub-magnetic member to other movement parts when assembling the watch, and parts and assembly costs for fixing the sub-magnetic member to the movement are eliminated. Can be reduced.

1 is a plan view showing a radio wave correction timepiece according to an embodiment of the present invention. Sectional drawing which shows the antenna and submagnetic member of the radio wave correction timepiece of the embodiment. The disassembled perspective view which shows the movement, dial plate, and dial ring of the said embodiment. The top view which shows the solar panel of the said embodiment. Sectional drawing which shows the submagnetic member of the modification of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a radio-controlled timepiece 1 that is an electronic timepiece with a built-in antenna is a pointer-type wristwatch (analog timepiece) that includes an hour hand 11, a minute hand 12, a second hand 13, and a dial 14 as shown in FIG. The radio-controlled timepiece 1 receives a long-wave standard radio wave as a radio wave including time information, and corrects the indicated positions of the hour hand 11, the minute hand 12, and the second hand 13 based on the received time information.

The radio-controlled timepiece 1 further includes an antenna 100 that receives a standard radio wave and a module (movement) 10 in which various configurations for controlling driving of the hands 11 to 13 are incorporated, and an exterior housing the module 10 and the like inside. The case 20 includes a crown 2 for performing time adjustment and the like, and buttons 3 and 4 for performing a reception operation and the like.
Here, the dial plate 14 is preferably formed of a non-conductive material such as synthetic resin or glass, for example, so that the standard radio wave entering from the cover glass 24 side (watch face side) described later is inhibited. However, the antenna 100 can receive well.

  As shown in FIG. 2, the exterior case 20 is attached to the substantially cylindrical case body 21, a back cover 22 that closes the opening on the lower surface side of the case body 21, and a fitting structure on the upper surface side of the case body 21. A ring-shaped bezel 23 and a cover glass 24 attached to the inner peripheral surface of the bezel 23.

In the outer case 20, as shown in FIG. 3, the module 10, the holding ring member 30 holding the module 10, the solar panel 40 held by the holding ring member 30, and the front side of the solar panel 40 are arranged. A translucent dial 14 is disposed.
In addition, since the module 10 employs a general configuration in which a ground plane, a circuit board, a stepping motor, a driving wheel train and the like are incorporated in addition to the antenna 100, description thereof is omitted below.

As shown in FIGS. 3 and 4, the solar panel 40 includes a substrate 41 having a substantially circular shape in plan view and a light receiving unit 42 of a solar panel formed on the surface side of the substrate 41, and the outside of the light receiving unit 42. Has a substrate outer peripheral portion 43. In addition, the light receiving unit 42 is divided into a plurality of regions (in this embodiment, five), and the power generation voltage is improved by connecting the outputs of the regions in series.
The outer periphery of each light receiving portion 42 is formed in a substantially circumferential shape along the holding ring member 30. A part of the two light receiving portions 42 is recessed toward the inner peripheral side, and the area of the substrate outer peripheral portion 43 in this portion is widened. A through hole is provided in a wide portion of the substrate outer peripheral portion 43, plus and minus terminals 44 are provided on the back side of the substrate 41, and a conducting member (not shown) is connected to the terminals 44. It is electrically connected to a circuit board (not shown) of the module 10 via a member. As a result, the solar panel 40 generates power when the sunlight transmitted through the dial 14 hits the light receiving unit 42, and the power generated by the light receiving unit 42 is a secondary provided on the circuit board via the conductive member. A battery (not shown) is charged, and a circuit board or the like is driven by the output of the secondary battery.

As shown in FIGS. 1 and 4, the antenna 100 is formed in a longitudinal shape, and is disposed in the exterior case 20 at the 9 o'clock position of the timepiece.
The antenna 100 includes an antenna core 110 and a coil 120 wound around the antenna core 110.
The antenna core 110 includes a coil winding portion 111 around which the coil 120 is wound, and lead portions 112 extending from both ends of the coil winding portion 111, and is formed in a longitudinal shape. Here, the coil winding portion 111 is formed in a linear shape, and the lead portion 112 is formed in an arc shape. The antenna core 110 is formed by, for example, punching a cobalt-based amorphous foil (eg, an amorphous foil of Co 50 wt% or more) as a magnetic foil material with a mold or bonding about 10 to 30 pieces formed by etching. The magnetic properties are stabilized by heat treatment such as annealing.
As shown in FIG. 2, the antenna core 110 is configured by laminating a planar amorphous foil in the thickness direction of the radio-controlled timepiece 1 (direction connecting the cover glass 24 and the back cover 22). The antenna core 110 is not limited to the laminated amorphous foil, and ferrite may be used. In this case, the antenna core 110 may be formed by a mold and heat-treated.

  The coil 120 needs an inductance value of about 10 mH when receiving a long-wave standard radio wave (40 to 77.5 kHz). For this reason, in this embodiment, the coil 120 is configured by winding a uremet wire having a diameter of about 0.1 μm for several hundred turns.

As shown in FIG. 2, a dial ring 25 is disposed on the inner peripheral side of the bezel 23, and an inner peripheral portion of the dial ring 25 is an inclined surface facing the dial 14.
As shown in FIGS. 3 and 4, the dial ring 25 covers the substrate outer peripheral portion 43 of the solar panel 40. That is, the inner peripheral edge 251 of the dial ring 25 is disposed on the inner side of the substrate outer peripheral portion 43 of the solar panel 40. Thereby, even when the solar panel 40 can be seen through the translucent dial plate 14, the substrate outer peripheral portion 43 of the solar panel 40, the outer periphery of the light receiving portion of the solar panel 40 whose shape is not uniform, and the like are controlled by the dial ring 25. Since it is covered, it is made not to be visually recognized without a sense of incongruity.

As shown in FIG. 2, a recess 252 is formed on the back surface of the dial ring 25. A sub-magnetic member 61 is disposed in each recess 252. The sub magnetic member 61 is joined to the recess 252 with an adhesive or the like.
As shown in FIGS. 1 and 4, a part and the whole of the sub magnetic member 61 are arranged at a position overlapping the coil 120 in plan view. That is, the coil 120 and the sub magnetic member 61 of the antenna 100 are disposed so as to be separated and overlapped in the thickness direction of the radio-controlled timepiece 1 with the dial 14 and the solar panel 40 interposed therebetween.

  The sub magnetic member 61 is formed in a substantially arc shape in accordance with the planar shape of the dial ring 25, and is disposed so as not to overlap the lead portion 112 in plan view.

  The submagnetic member 61 is formed by laminating an amorphous foil in a plurality of layers. Examples of the amorphous foil include cobalt-based amorphous (Co—Fe—Ni—B—Si). The secondary magnetic member 61 is, for example, cobalt-based amorphous (Co—Fe—Ni—B—Si), has a relative magnetic permeability of 20000, and is much higher than the dial ring 25, dial 14, and solar panel 40. It has magnetic permeability. Therefore, magnetic flux lines that are part of the magnetic field resonated by the antenna are collected on the secondary magnetic member 61 and the magnetic field becomes stronger, and passes from the one lead portion 112 to the other lead portion 112 via the secondary magnetic member 61. The magnetic flux density of the magnetic flux lines to be increased also increases. As a result, it is possible to prevent magnetic flux lines, which are part of the magnetic field resonated by the antenna, from flowing from the antenna core 110 to the case body 21 and the bezel 23 and being absorbed. Therefore, eddy current loss generated in the case main body 21 and the bezel 23 can be reduced, and a decrease in reception sensitivity of the antenna can be prevented. Further, part of the magnetic field that has entered the movement metal parts (such as the train wheel) from the antenna core 110 can also be prevented from passing through the sub-magnetic member 61 and being absorbed by the movement parts. For this reason, the eddy current loss which generate | occur | produced in the movement components can be reduced.

  Here, as described above, the sub magnetic member 61 and the antenna core 110 are disposed apart from each other in the watch thickness direction. The sub-magnetic member 61 and the antenna core 110 need only be magnetically coupled, and therefore do not need to be in close contact with each other, and are sufficiently magnetically coupled even if the dial 14 and the solar panel 40 are interposed therebetween.

According to this embodiment mentioned above, there exist the following effects.
(1) According to the present embodiment, since the secondary magnetic member 61 that is magnetically coupled to the antenna core 110 is provided, the receiving sensitivity can be improved as compared with the case where such a secondary magnetic member 61 is not provided.
In addition, since the secondary magnetic member 61 is disposed in the dial ring 25, it does not interfere with other components as in the case where the secondary magnetic member 61 is disposed in the module 10. For this reason, since there is no restriction on the arrangement position and size within the dial ring 25, an arrangement position, size and shape suitable for improving the reception characteristics can be freely set. Furthermore, since the secondary magnetic member 61 can be disposed in the internal space of the dial ring 25, the internal space of the dial ring 25 can be effectively used without increasing the thickness of the timepiece.

(2) Since the secondary magnetic member 61 is disposed in the recess 252 of the dial ring 25, the secondary magnetic member 61 can be easily and accurately positioned with respect to the dial ring 25. For this reason, the position of the sub magnetic member 61 with respect to the antenna 100 can also be set accurately, and the prevention effect of the eddy current loss which generate | occur | produces in another metal component can also be optimized.
In addition, since all and a part of the secondary magnetic member 61 are arranged at positions overlapping the coil 120 of the antenna 100 in the clockwise thickness direction, the distance between the secondary magnetic member 61 and the antenna core 110 can be minimized. . Therefore, even if the dial 14 and the solar panel 40 are interposed, the magnetic coupling can be enhanced, and the effect of preventing eddy current loss can be optimized in this respect.

(3) Further, since the secondary magnetic member 61 is assembled and attached to the dial ring 25, the assembling property of the watch is improved as compared with the case where the secondary magnetic member 61 is attached to the coil 120 of the antenna, the case main body 21 or the like. it can. Even when an impact or the like is applied, such as when the radio-controlled timepiece 1 is dropped, the sub-magnetic member 61 can be protected by the dial ring 25, the strength can be increased, and the impact resistance can be improved.

(4) Since the submagnetic member 61 is formed by laminating a plurality of amorphous foils, the magnetic flux collecting effect of magnetic flux lines that are part of the magnetic field resonated by the antenna can be enhanced.

(5) Since the substrate outer peripheral portion 43 of the solar panel 40 is covered with the dial ring 25, the outer peripheral edge of the substrate outer peripheral portion 43 and the light receiving portion 42 that are not supposed to be visually recognized from the outside are transmitted from the dial 14. As a result, it is possible to improve the appearance of the radio-controlled timepiece 1 because it is not visually recognized from the outside and becomes a dial surface without a sense of incongruity.

[Modification of Embodiment]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In the above-described embodiment, all and part of the sub-magnetic member 61 is configured to be provided with one sub-magnetic member 61 for the coil 120 of the antenna 100. However, the configuration is provided with a plurality of sub-magnetic members 61. And so on.

In the embodiment, the secondary magnetic member 61 is made of an amorphous metal that is a ferromagnetic member. However, the secondary magnetic member 61 is more than the magnetic permeability of the dial 14, the solar panel 40, the case body 21, and the bezel 23. What is necessary is just to comprise by the material which has a large magnetic permeability, and the material should just select suitably by the material of said each component, the presence or absence of the solar panel 40 (including the radio timepiece which does not depend on solar power generation), etc.
In the embodiment, the secondary magnetic member 61 is made of an amorphous foil material. For example, the secondary magnetic member 61 is made of a ferrite material or the like, or is formed by plating by ferrite plating or the like. It is good also as a structure of affixing the obtained resin sheet.

In the above embodiment, the secondary magnetic member 61 is disposed in the recess 252 formed in the dial ring 25. However, the dial ring 25 may be manufactured by insert molding in which the secondary magnetic member 61 is disposed.
Further, the planar position of the sub-magnetic member 61 is not limited to the position overlapping the coil 120 of the antenna 100 but may be disposed at a position shifted in a plane with respect to the lead part 112 and is magnetically coupled to the lead part 112. What is necessary is just to provide in the position which can.

Further, as shown in FIG. 5, the secondary magnetic member 61 includes a secondary magnetic member main body 611 housed in the concave portion 252 of the dial ring 25, and a protruding portion 612 that protrudes from the secondary magnetic member main body 611 toward the antenna core 110. May be provided. The projecting portion 612 is formed by laminating an amorphous foil material formed separately from the submagnetic member main body 611 into a columnar shape, and is bonded to the submagnetic member main body 611.
Further, the dial 14 is formed with a hole serving as an insertion portion 141 into which the protruding portion 612 is inserted.
According to such a configuration, the protrusion 612 of the sub-magnetic member 61 is disposed in the insertion portion 141, so that the distance between the sub-magnetic member 61 and the lead portion 112 can be made closer than in the above embodiment. Therefore, the strength of the magnetic coupling between the sub magnetic member 61 and the lead portion 112 can be increased, and the effect of preventing the eddy current loss generated in other metal parts by the sub magnetic member 61 can be optimized and the effect can be adjusted. it can.

Note that the protruding portion 612 may be made of another magnetic member such as a ferrite material. Further, when the secondary magnetic member 61 is made of a ferrite material, the secondary magnetic member main body 611 and the protruding portion 612 may be integrally formed.
Furthermore, the solar panel 40 may be provided with a hole continuous to the insertion portion 141, and the projecting portion 612 may be projected through the solar panel 40.

In the above embodiment, the antenna core 110 includes the coil winding portion 111 formed in a linear shape and the lead portions 112 formed in an arc shape at both ends of the coil winding portion 111. Further, the lead 112 may be arranged on a straight line.
That is, since the dial ring 25 is designed in accordance with the shape of the outer case 20 or the dial 14, the coil winding portion 111 and the lead are used in the case of a rectangular outer case or a bucket-type outer case. The part 112 may be an antenna arranged on a straight line.
In the said embodiment, although the solar panel 40 was fixed to the back surface of the dial plate 14 was shown, it is not limited to this, It is good also as a structure with which the solar panel 40 is not provided.

In the embodiment, the time information is exemplified as the wireless information communicated using the antenna, but the present invention is not limited to this. For example, an IC card function may be built in the radio-controlled timepiece 1 and used for transmitting and receiving information such as train commuter passes and various prepaid IC cards. For example, an IC chip and an antenna may be incorporated in the exterior case 20 so that information can be exchanged by placing a wristwatch close to a ticket gate using a smart card, an entrance / exit management machine, various billing machines, or the like. In this case, it is not necessary to insert and remove the IC card separately, and it is only necessary to bring the hand holding the timepiece 1 closer, so that the operability can be greatly improved.
Therefore, the antenna built in the outer case 20 of the present invention may be used exclusively for reception as in the case of receiving a standard radio wave, or for transmitting and receiving information like a tag using a non-contact IC. Or may be used exclusively for transmission, and these may be appropriately selected according to the type of electronic timepiece with a built-in antenna to which the present invention is applied.

  DESCRIPTION OF SYMBOLS 1 ... Radio wave correction clock, 10 ... Module (movement), 14 ... Dial, 20 ... Exterior case, 25 ... Dial ring, 30 ... Holding ring member, 40 ... Solar panel, 61 ... Submagnetic member, 100 ... Antenna, 110 DESCRIPTION OF SYMBOLS ... Antenna core, 111 ... Coil winding part, 112 ... Lead part, 120 ... Coil, 141 ... Insertion part, 252 ... Recessed part, 611 ... Secondary magnetic member main body, 612 ... Projection part.

Claims (7)

An exterior case,
A dial arranged in the exterior case;
A dial ring arranged on the surface side of the dial,
An antenna disposed on the back side of the dial;
A sub-magnetic member,
The antenna includes an antenna core formed in a longitudinal shape with a magnetic material, and a coil wound around the antenna core,
The sub-magnetic member is magnetically coupled to the antenna core and disposed in the dial ring. The electronic watch with a built-in antenna according to claim 1,
A recess is formed on the back surface of the dial ring,
The sub-magnetic member is housed in the recess. An antenna built-in type electronic timepiece characterized by the above-mentioned. In the electronic timepiece with a built-in antenna according to claim 1 or 2,
The antenna built-in type electronic timepiece is characterized in that the end of the sub-magnetic member is disposed at a position overlapping the antenna coil or the antenna core in a plan view when the timepiece is viewed from the front side. In the electronic timepiece with a built-in antenna according to any one of claims 1 to 3,
The dial is composed of a translucent member,
A solar panel is arranged on the back of the dial,
The solar panel includes a substrate and a light receiving portion formed on the substrate, and has a substrate outer peripheral portion outside the light receiving portion in the substrate,
The dial ring covers the outer periphery of the substrate of the solar panel. In the electronic timepiece with a built-in antenna according to any one of claims 1 to 4,
The sub-magnetic member is formed of an amorphous foil. In the antenna built-in type electronic timepiece according to any one of claims 1 to 5,
The sub-magnetic member includes a sub-magnetic member main body housed in the recess of the dial ring, and a protruding portion that protrudes from the sub-magnetic member main body toward the antenna core side,
An electronic timepiece with a built-in antenna, wherein the dial is formed with an insertion portion into which the protruding portion is inserted. In the electronic timepiece with a built-in antenna according to any one of claims 1 to 6,
The sub-magnetic member is an electronic timepiece with a built-in antenna, wherein at least a part of the sub-magnetic member is inserted in the dial ring.

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