JP3506625B2 - Auxiliary antenna device for radio-controlled clock - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary antenna device for a radio-controlled timepiece that receives a time signal such as an hour signal and adjusts the time, and more particularly to a bar antenna structure in which a coil is wound around a core. The present invention relates to an auxiliary antenna device of a radio-controlled timepiece.

[0002]

2. Description of the Related Art A radio-controlled timepiece that uses radio waves among automatic time-corrected clocks receives a standard frequency radio wave (JG2AS) of a predetermined frequency, for example, a long wave (40 kHz) that accurately conveys Japan Standard Time, The so-called zeroing or the like is performed on the basis of this received signal, and an internal antenna for receiving this standard time radio wave is provided. Then, generally, it is set so that the standard time radio wave is received and the time is automatically corrected at night when the frequency of use by the user is low.

As a conventional radio-controlled timepiece having this built-in antenna, for example, Japanese Utility Model Laid-Open No. 5-81787, Japanese Patent Laid-Open No. 8-271659, and International Publication W095 / 279.
No. 28 and the like are known. A built-in antenna incorporated in a wristwatch disclosed in these publications is a core made of a rod-shaped ferrite or the like arranged in a substantially central portion of a dial or a side area of a watch case, and a coil wound around the outer periphery of the core. And the like.

[0004]

By the way, in the above-mentioned conventional wristwatch, due to the size limitation of the timepiece body and the weight limitation of the timepiece body, the core forming the built-in antenna is not so much compared with the timepiece body. Since a large one cannot be used, it cannot be said that the receiving sensitivity is always sufficiently secured. Therefore, during the automatic correction operation at night or the like, there is a problem that the desired time correction may not be performed accurately and reliably depending on the storage location of the wristwatch or the radio wave condition.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to avoid nighttime increase in size of a wristwatch or increase in weight of a wristwatch. It is to provide a separately formed auxiliary antenna device that surely corrects the time automatically when not in use, and the auxiliary antenna device of a radio-controlled timepiece having a simple structure and requiring no power source or the like. To provide.

[0006]

As a result of intensive studies to achieve the above object, the present inventor has found an invention having the following structure. That is, the auxiliary antenna device for a radio-controlled timepiece according to the present invention is an auxiliary antenna device for a radio-controlled timepiece that assists a built-in antenna incorporated in the radio-controlled timepiece that receives a predetermined radio wave and automatically adjusts the time. A rod-shaped core, a coil wound around the outer periphery of the core.
And a capacitor connected to the coil
An antenna body and an antenna for arranging and housing the antenna body.
A tena housing and a watch housing that can house the watch are formed.
And a holding body, and the timepiece accommodating portion holds the timepiece in a predetermined
Includes a first direction control part to orient in the direction
However, the antenna accommodating portion has the built-in
The axial direction of the core forming the antenna and the antenna body
Selective in multiple directions from the axial direction of the core to be formed
Orient and hold the antenna body so that
A plurality of second direction restricting portions for allowing the holding body to move.
The feature is that it is provided in the place .

[0007]

[0008]

[0009]

[0010]

Further , the auxiliary antenna device for a radio-controlled timepiece according to the present invention is an auxiliary antenna for a radio-controlled timepiece that assists a built-in antenna built in the radio-controlled timepiece that receives a predetermined radio wave and automatically adjusts the time. An antenna body comprising a rod-shaped core, a coil wound around the outer periphery of the core, and a capacitor connected to the coil.
Given a case that houses the antenna body, consists of a case holding portion and a clock receiving unit capable of housing the watch are formed holder for holding the case housing the antenna body, the timepiece housing unit, the clock Has a first direction restricting portion for orienting in the direction of
A case for orienting and attaching the case so that the axial direction of the core forming the built-in antenna and the axial direction of the core forming the antenna body can be selectively performed in a plurality of directions. The attachment parts are provided at a plurality of positions with respect to the holding body.

[0012]

[0013]

[0014] The auxiliary antenna device of the present invention, rod-shaped core, a coil wound around the outer periphery of the core, and since it has a capacitor connected to the coil, is arranged watch near vicinity of the auxiliary antenna device With the magnetic coupling between the auxiliary antenna device and the built-in antenna of the timepiece, a larger electromotive force can be obtained, and the reception sensitivity is improved as compared with the case where the timepiece is left alone.

Further, the auxiliary antenna device of the present invention is
Since the antenna body has a rod-shaped core, a coil wound around the outer periphery of the core, and a capacitor connected to the coil, and a holding body for disposing and holding the antenna body and the clock, the antenna body holds in advance. when the watch is housed in a state of being, by magnetic coupling between the antenna and the watch built-in antenna, a greater electromotive force can be obtained, the receiving sensitivity is improved as compared with the case of the watch itself.

Furthermore, the auxiliary antenna device of the present invention includes an antenna body including a rod-shaped core, a coil wound around the outer periphery of the core, and a capacitor connected to the coil,
A case for housing the antenna body, since it has a holding member for holding by placing the case and watch housing the antenna body, the watch is housed in a state in which the case accommodating the antenna body is held in advance in the holder Then, a larger electromotive force is obtained by the magnetic coupling between the antenna body housed in the case and the built-in antenna of the timepiece, and the reception sensitivity is improved as compared with the case where the timepiece alone is left alone.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is an exploded perspective view showing an embodiment of an auxiliary antenna device according to the present invention, FIG. 2 is a diagram showing an equivalent electric circuit of the auxiliary antenna device, and FIG.
FIG. 4 is a plan view showing a schematic configuration of a wrist watch to which the auxiliary antenna device is applied, FIG. 4 is a perspective view showing a state in which the wrist watch is arranged in the vicinity of the auxiliary antenna device, and FIG. FIG.

Auxiliary antenna device 10 according to this embodiment
As shown in FIG. 1, one of the antenna body 20 as a resonance circuit body that exerts a resonance action on the built-in antenna 52 (see FIG. 3) built in the wristwatch 50, and one of the housings surrounding the antenna body 20. The core 2 of the antenna body 20 that forms a part
It is configured by a holding member 30 that holds 1 and a cover case 40 that is coupled to the holding member 30 and forms a part of a housing that surrounds the antenna body 20.

As shown in FIG. 1, the antenna body 20 includes a rod-shaped core 21 and a coil 2 wound around the outer periphery of the core 21.
2 and a capacitor 23 connected to the coil 22. The core 21 is formed of a ferrite material as a rod-shaped body having a pair of flat surfaces 21a, and has a length of about 100 mm and a diameter of about 10 mm. The larger the cross-sectional area and length, the larger the induced electromotive force to the coil 22. Therefore, it is set to be sufficiently large for the built-in antenna 52 of the wristwatch 50. In addition, core 2
The cross-sectional shape of 1 is merely an example, and may be an elliptical shape, a circular shape, a square shape, or the like.

A coil 22 is wound around the outer peripheral surface of the core 21, and a capacitor 23 having a predetermined capacity is electrically connected to the coil 22. Further, the coil 22 has a core 2 so that a resonance point can be obtained at a predetermined frequency (for example, 40 kHz) of the standard time radio wave.
1 is fixed to the outer peripheral surface of the core 21 at a predetermined position in the axial direction. In addition, the antenna body 20 having the above configuration
Is equivalent to an electric circuit as shown in FIG.

The holding member 30 is made of, for example, a non-metal material such as plastic so as not to reduce the magnetic coupling with the built-in antenna 52 built in the wristwatch 50, and has a substantially rectangular flat plate-shaped base 31. The base 31 includes a pair of support portions 32 formed integrally with the base portion 31, and locking ribs 33 used when the cover case 40 is attached. Each of the pair of support portions 32 is formed with a U-shaped cutout portion 32 a having a width substantially equal to the width defined by the flat surface 21 a of the core 21. That is, the core 21 is held by the holding member 30 by fitting both ends of the core 21 into the pair of support portions 32 (cutout portions 32 a).

Like the holding member 30, the cover case 40 has a substantially rectangular parallelepiped shape using, for example, a plastic of a nonmetallic material so as not to reduce the magnetic coupling with the built-in antenna 52 built in the wristwatch 50. None Opening 4 below
1 is formed. Further, a projecting piece 42 as a supporting portion for supporting the wristwatch is integrally formed on the outer surface, that is, one side surface. The cover case 40 is integrally connected to the holding member 30 by fitting the opening 41 of the cover case 40 onto the locking rib 33 of the holding member 30 while the antenna body 20 is held by the holding member 30. It will be.

Next, the operation of the auxiliary antenna device 10 according to this embodiment will be described. As shown in FIG. 4, the wristwatch 50 is attached to the protruding piece 42 formed on the cover case 40 of the auxiliary antenna device 10 configured as described above.
The wristwatch 50 is placed near the auxiliary antenna device 10 with the band 51 attached.

With this arrangement, the axis of the core 52a forming the built-in antenna 52 of the wristwatch 50 and the axis of the core 21 forming the antenna body 20 are substantially parallel to each other. In this state, the antenna body 20 of the auxiliary antenna device 10 and the built-in antenna 52 of the wristwatch 50 are most efficiently magnetically coupled, as shown in FIG. Therefore, due to this magnetic coupling, a larger induced electromotive force is generated in the built-in antenna 52, and the reception sensitivity thereof is improved as compared with the case where the wristwatch 50 is left alone.

As a result, when not in use, such as at night, the wristwatch 50 can be arranged in the vicinity of the auxiliary antenna device 10 or can be attached to the protruding piece 42 so that the time is automatically corrected by the standard time radio wave more reliably. it can.

In the above embodiment, the cover case 4 for covering the antenna body 20 is used as the auxiliary antenna device 10.
However, the present invention is not limited to this, and it is formed only by the holding member 30 and the antenna body 20, and a protruding piece (not shown) as a supporting portion for supporting the wristwatch 50 is provided with respect to the holding member 30. ) May be adopted. Further, instead of forming the holding member 30 and the cover case 40 as separate bodies as described above, it is also possible to integrally form the antenna body 20 so as to be embedded therein. Further, as the auxiliary antenna device, at least the antenna body 20 as the resonance circuit body is enough,
The antenna body 20 may be housed in an appropriate cover case so that the wristwatch 50 can be placed near the antenna body 20.

6 and 7 show a second embodiment of the auxiliary antenna device according to the present invention, FIG. 6 is a plan view thereof, and FIG. 7 is a cross section taken along the line AA in FIG. It is a figure. As shown in FIG. 6, the auxiliary antenna device 60 according to this embodiment includes an antenna body 70 as a resonance circuit body that exerts a resonance action on a built-in antenna 52 (see FIG. 3) built in the wristwatch 50, and an antenna. The body 70 is configured to include a storage case 80 as a holding body that stores and holds the body 70 and defines a space for storing the wristwatch 50.

As shown in FIG. 6, the antenna body 70 includes a rod-shaped core 71 and a coil 7 wound around the outer periphery of the core 71.
2 and a capacitor 73 connected to the coil 72. Here, the core 71,
The dimensions, the capacitance, the structure, etc. of the coil 72 and the capacitor 73 are the same as those in the above-described embodiment, and thus the description thereof is omitted here.

The storage case 80 is formed of, for example, a non-metal material such as plastic so as not to reduce the magnetic coupling with the built-in antenna 52 built in the wristwatch 50. An antenna housing portion 81 for housing the antenna body 70 and a timepiece housing portion 82 for housing the wristwatch 50 are integrally formed in the housing case 80.

Then, the wristwatch 50 is provided in the timepiece housing portion 82.
A side wall portion 82a formed to follow the outer contour of the wristwatch 50, that is, a first direction regulating portion for orienting and storing the watch in a predetermined direction is provided. On the other hand, the antenna accommodating portion 81 has its contour defined by an inner wall 81a that defines a substantially rectangular parallelepiped space that is larger than the antenna body 70. The inner wall 81a holds the antenna body 70 in an oriented manner. The second direction restricting portion, that is, a protruding rib 81b that contacts the flat surface 71a of the core 71 and holds the core 71 from both sides, and a receiving portion 81c that supports the outer peripheral surface of the core 71 from below are formed.

Here, the protruding rib 81b and the receiving portion 8
1c, etc., when the wristwatch is stored in the clock storage unit 82,
The axial direction of the core 71 forming the antenna body 70 is formed to be substantially parallel to the axial direction of the core 52a forming the built-in antenna 52 built in the wristwatch 50. The upper opening of the antenna housing 81 is closed by the lid 83 after the antenna body 70 is housed.

Next, the operation of the auxiliary antenna device 60 according to this embodiment will be described. As shown in FIG. 6, the wristwatch 5 is attached to the timepiece housing portion 82 formed in the housing case 80 of the auxiliary antenna device 60 configured as described above.
Store 0.

When the wristwatch 50 is housed in this way, the axis of the core 52a forming the built-in antenna 52 of the wristwatch 50 and the axis of the core 71 forming the antenna body 70 are substantially parallel to each other. In this state, the antenna body 70 of the auxiliary antenna device 60 and the built-in antenna 52 of the wristwatch 50 are most efficiently magnetically coupled, as shown in FIG. Therefore, due to this magnetic coupling, a larger induced electromotive force is generated in the built-in antenna 52, and the reception sensitivity thereof is improved as compared with the case where the wristwatch 50 is left alone.

As a result, when the wristwatch 50 is not used, such as at night, by simply storing the wristwatch 50 in the storage case of the auxiliary antenna device 70, the time can be automatically corrected more reliably by the standard time radio wave.

In the above embodiment, the storage case 8
0, the antenna accommodating portion 81 that accommodates the antenna body 70 is provided only at one place, but the present invention is not limited to this, and for example, the second antenna extending in a direction substantially orthogonal to the existing antenna accommodating portion 81. It is also possible to form an antenna accommodating portion and attach and detach the antenna body 70 to and from the second antenna accommodating portion.

That is, the built-in antenna 52 of the wristwatch 50
When housing a wristwatch with a built-in antenna arranged in a direction substantially orthogonal to the axis of the core 52a forming the
By attaching the antenna body 70 to the second antenna accommodating portion, it is possible to more reliably perform the automatic time correction by the standard time radio wave. In this way, it is possible to provide a plurality of second direction restricting portions, that is, antenna accommodating portions in the accommodating case 80 so that the antenna body 70 can be selectively oriented in a plurality of directions.

8 and 9 show a third embodiment of the auxiliary antenna device according to the present invention, FIG. 8 is a plan view thereof, and FIG. 9 is a sectional view taken along line BB in FIG. It is a figure. As shown in FIG. 8, the auxiliary antenna device 90 according to this embodiment includes an antenna body 100 as a resonance circuit body that exerts a resonance action on a built-in antenna 52 (see FIG. 3) built in the wristwatch 50, and an antenna. A storage case 1 as a holding body that defines a tubular case 110 that stores the body 100, case holding portions 121 and 122 that hold the case 110, and a watch holding portion 123 that holds the wristwatch 50.
It is composed of 20 or the like.

As shown in FIGS. 8 and 9, the antenna body 100 includes a rod-shaped core 101, a coil 102 wound around the outer periphery of the core 101, and a capacitor 103 connected to the coil 102. Has been formed.
Here, the core 101, the coil 102, and the capacitor 1
The size, capacity, structure, and the like of 03 are the same as those in the above-described embodiment, and thus description thereof will be omitted here.

The case 110 is formed of, for example, a non-metal material such as plastic in a substantially cylindrical shape so as not to reduce the magnetic coupling with the built-in antenna 52 built in the wristwatch 50, and the antenna body 100 is housed in the case 110. It is designed to be housed and covered entirely. Further, as shown in FIGS. 8 and 9, the storage case 120 is provided on a part of the outer peripheral surface thereof.
Two attachment pieces 111 that are formed so as to be detachable with respect to are formed.

The storage case 120 is formed of, for example, a non-metal material such as plastic so as not to reduce the magnetic coupling with the built-in antenna 52 built in the wristwatch 50. The storage case 120 is provided with case holding portions 121 and 122 for holding the case 110 accommodating the antenna body 100 on the side surface thereof, and in the area of the case holding portions 121 and 122,
As shown in FIG. 9, a fitting hole 12 as a case mounting portion into which the mounting piece 111 of the case 110 can be detachably fitted.
Two 4 are formed respectively. Therefore, when the mounting piece 111 is fitted in the fitting hole 124, the case 111, that is, the antenna body 100 is oriented and fixed in the vertical direction or the horizontal direction in FIG.

As shown in FIG. 8, the storage case 120 is provided with a timepiece housing portion 123 capable of housing the wristwatch 50 on the upper surface thereof.
23, a side wall portion 123a formed so as to follow the outer contour of the first direction restricting portion, that is, the wristwatch 50, is provided for orienting the wristwatch 50 in a predetermined direction.

Therefore, as shown in FIG. 8, for example, when the wristwatch 50 is housed in the timepiece housing portion 123 with the case 110 housing the antenna body 100 attached to the left side surface, the wristwatch 50 is built in the wristwatch 50. The axial direction of the core 52a forming the built-in antenna 52 and the axial direction of the core 101 forming the antenna body 100 are arranged substantially parallel to each other.

Next, the operation of the auxiliary antenna device 90 according to this embodiment will be described. As shown in FIG. 8, the wristwatch 50 is housed in the timepiece housing portion 123 formed in the housing case 120 of the auxiliary antenna device 90 configured as described above.

When the wristwatch 50 is housed in this manner, the axis of the core 52a forming the built-in antenna 52 of the wristwatch 50 and the axis of the core 101 forming the antenna body 100 are substantially parallel to each other. In this state, the antenna body 100 of the auxiliary antenna device 90 and the built-in antenna 52 of the wristwatch 50 are
As shown in FIG. 5, magnetic coupling is most efficiently generated. Therefore, due to this magnetic coupling, a larger induced electromotive force is generated in the built-in antenna 52, and the reception sensitivity thereof is improved as compared with the case where the wristwatch 50 is left alone.

As a result, when the wristwatch 50 is not used at night or the like, only by storing the wristwatch 50 in the storage case 120 of the auxiliary antenna device 90, it is possible to more reliably perform the automatic time correction by the standard time radio wave.

On the other hand, if the wristwatch has a built-in antenna extending horizontally in FIG.
By attaching the case 110 accommodating 00 as shown by the chain double-dashed line in FIG. 8, it is possible to more reliably perform the automatic time correction by the standard time radio wave.

As described above, by making the case 110 detachable so that the antenna 100 can be selectively oriented in a plurality of directions, the storage case 120 can be unified into one type. Further, the storage case 120 itself can be made smaller than that in which the space for housing the antenna body is integrally formed. In the above embodiments, the case where the wristwatch is applied as the timepiece has been shown, but the present invention is not limited to this, and it goes without saying that the present invention can be applied to a pocket watch or other timepieces. .

[0048]

As described above, according to the auxiliary antenna device for a radio-controlled timepiece according to the present invention, since it has the resonant circuit body that exerts a resonance action on the built-in antenna incorporated in the radio-controlled timepiece, When the timepiece is arranged in the vicinity of this auxiliary antenna device, the built-in antenna resonates and its receiving sensitivity is enhanced. Therefore, at the time of the automatic correction operation at night or the like, the desired time correction can be automatically and accurately performed regardless of the storage location of the wristwatch or the radio wave condition.

Further, according to the auxiliary antenna device of the radio-controlled timepiece according to the present invention, the resonance circuit body is composed of the rod-shaped core, the coil wound around the outer periphery of the core, and the capacitor connected to the coil. Therefore, a power source or the like is unnecessary and a simple structure can be obtained.

Further, by providing a holding member for holding the core, the axial direction of the core can be stably positioned in a predetermined direction, and by providing a supporting portion for supporting the wristwatch on the holding member, The core of the auxiliary antenna device and the core of the built-in antenna built in the wristwatch can be positioned relative to each other, and magnetic coupling can be efficiently obtained between this auxiliary antenna device and the built-in antenna of the timepiece. A large electromotive force is obtained, and the receiving sensitivity is improved compared to the case of a watch alone. Further, by providing the housing that at least supports the core and surrounds the core, the coil, and the capacitor, it is possible to prevent the user from accidentally touching the coil, the capacitor, and the like that have been adjusted in advance.

According to the auxiliary antenna device of the radio-controlled timepiece according to the present invention, the antenna body, the antenna housing section for arranging and housing the antenna body, and the holding body having the timepiece housing section for housing the timepiece are formed. Since it has, the timepiece can be easily arranged at a predetermined position near the antenna body. Further, since the watch housing portion is provided with the first direction restricting portion and the antenna housing portion is provided with the second direction restricting portion, the built-in antenna incorporated in the watch is formed only by housing the watch in the watch housing portion. It can be positioned so that the axial direction of the core and the axial direction of the core forming the antenna body are substantially parallel to each other.

Further, according to the auxiliary antenna device of the radio-controlled timepiece according to the present invention, the antenna body, the case for accommodating the antenna body, the case holding portion for disposing and holding the case, and the timepiece can be accommodated. Since the timepiece housing portion has the holding body formed therein, the antenna body and the holding body can be handled separately, and the manufacturability is improved. The body itself can be miniaturized.

By allowing the case to be detachably attached to the holder at a plurality of locations, the direction of attaching the case can be selected according to the direction of the built-in antenna built in the timepiece. Therefore, the holder can be commonly used for various timepieces.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of an auxiliary antenna device according to the present invention.

FIG. 2 is a diagram showing an equivalent electric circuit of an auxiliary antenna device according to the present invention.

FIG. 3 is a plan view showing a radio wave correction type wrist watch to which the auxiliary antenna device according to the present invention is applied.

FIG. 4 is a perspective view showing a state in which a wristwatch is attached and arranged on the auxiliary antenna device according to the present invention.

FIG. 5 is a diagram showing a magnetic coupling relationship between an auxiliary antenna device according to the present invention and a built-in antenna built in a wristwatch.

FIG. 6 is a plan view showing a second embodiment of the auxiliary antenna device according to the present invention.

FIG. 7 is a vertical cross-sectional view taken along the line AA in FIG.

FIG. 8 is a plan view showing a third embodiment of the auxiliary antenna device according to the present invention.

9 is a vertical cross-sectional view taken along the line BB in FIG.

[Explanation of symbols]

10 ... Auxiliary antenna device 20 ... Antenna body (resonance circuit body) 21 ... Core 22 ... coil 23 ... Capacitor 30 ... Holding member 32 ... Supporting part 40 ... Cover case 42 ... Projecting piece (supporting part) 50 ... Watch 51 ... Band 52 ... Built-in antenna 52a ... core 60 ... Auxiliary antenna device 70 ... Antenna body (resonance circuit body) 71 ... Core 72 ... Coil 73 ... Capacitor 80 ... Storage case (holding body) 81: Antenna housing 81b ... protruding rib (second direction restricting portion) 81c ... Receiving part (second direction restricting part) 82 ... Clock storage unit 82a ... Side wall portion (first direction regulating portion) 90 ... Auxiliary antenna device 100 ... Antenna body (resonance circuit body) 101 ... Core 102 ... coil 103 ... Capacitor 110 ... Case 111 ... Mounting piece 120 ... Storage case (holding body) 121, 122 ... Case holder 123 ... Clock storage unit 123a ... Side wall part (first direction restricting part) 124: Fitting hole (case mounting part)

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Tanoguchi, Shinjuku Nitta, Shinjuku, Showa-cho, Kita-Katsushika-gun, Saitama 321 Rhythm Clock Industry Co., Ltd. Saitama Plant Field 321 Rhythm Watch Industry Co., Ltd. Saitama Works (72) Inventor Kensei Takada 6-12 Hommachi, Tanashi City, Tokyo Citizen Watch Co., Ltd. Tanashi Factory (72) Inventor Kenji Fujita Honmachi, Tanashi City, Tokyo 6-1-12 Citizen Watch Co., Ltd. Tanashi Factory (72) Inventor Masahiro Sase 6-1-12 Honmachi, Tanashi City, Tokyo Citizen Watch Co., Ltd. Tanashi Factory (56) References JP 62- 269403 (JP, A) Actual development Sho 62-139112 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G04G 1 / 00,5 / 00 G04C 9/02 H01Q 1/00

Claims (2)

(57) [Claims] 1. An auxiliary antenna device for a radio-controlled timepiece that assists a built-in antenna built in a radio-controlled timepiece that receives a predetermined radio wave and automatically adjusts the time , comprising a rod-shaped core, A coil wound around the outer periphery, and
Antenna body consisting of a capacitor connected to the coil
And an antenna housing part for arranging and housing the antenna body,
From a holding body formed with a timepiece accommodating portion capable of accommodating a timepiece
The timepiece accommodating section orients the timepiece in a predetermined direction to accommodate the timepiece.
A first direction restricting portion for allowing the antenna accommodating portion to be installed in the watch.
Form the antenna body with the axial direction of the core forming the tenor
Axis direction of the core
Hold and orient the antenna body
A plurality of second direction restricting portions for the holding body
An auxiliary antenna device for a radio-controlled timepiece , which is provided in . 2. An auxiliary antenna device of a radio-controlled timepiece for assisting a built-in antenna built in a radio-controlled timepiece which receives a predetermined radio wave and automatically adjusts the time , which comprises a rod-shaped core and the core. A coil wound around the outer periphery, and
Antenna body consisting of a capacitor connected to the coil
When, a case that houses the antenna body, the case holding for holding the case housing the antenna body
And a holder formed with a timepiece accommodating portion capable of accommodating a timepiece
The timepiece accommodating portion accommodates the timepiece by orienting the timepiece in a predetermined direction.
And a case holding section, the case holding section includes a first direction restricting section for enabling
Forming the antenna body with the axial direction of the core forming the antenna
Axis direction of the core
To orient and attach the case so that
Case attachment parts are provided at multiple locations with respect to the holder.
Its dependent, auxiliary antenna device of the radio-controlled timepiece, characterized in that.