JP2006253881A - Substrate mounting type antenna, radio wave clock module, and its use method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a substrate mounting type antenna for improving the receiving sensitivity in a packaged substrate product being built in an electronic apparatus, and to provide a radio wave clock module and its using method. <P>SOLUTION: A connection counterbore 14 has a connection terminal 15 and connection terminals 151 and 152 are connected, respectively, with the connection lines 102a and 102b of the coil 102 of a bar antenna 100. The connection counterbore 14 is mounting the circuit portion 16 of a tuning capacitor being connected with the coil 102. A protection case 18 contains a part of the connection counterbore 14 including the bar antenna 100 and the circuit portion 16. A slit 181 is opened in the case 18 so that the connection counterbore 14 is inserted. The case 18 is arranged such that the bar antenna 100 can be rotated or slid by the slit 181 about the connection counterbore 14 as a fixed point. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a board-mounted antenna, a radio clock module, and a method of using the same for receiving a radio wave correction clock function that receives a standard radio wave including time information and corrects the time.

  The radio clock has a function of receiving a standard radio wave (long wave) transmitted from a predetermined transmission base station and automatically correcting the date and time. By incorporating such a radio wave correction clock function into an electronic device, the accuracy of the clock function can be improved. The standard radio wave is a long wave of 40 kHz, for example, and has directivity. For this reason, the receiving sensitivity of an antenna that receives a standard radio wave is greatly affected by its orientation.

  Electronic devices that receive long waves are portable, such as AM radios, wristwatches, and desk clock type radio clocks, and are often configured with an external antenna. Therefore, it was possible to adjust the reception sensitivity of the antenna simply by changing the orientation of the device itself or the orientation of the external antenna. However, electronic devices may be used for, for example, watches installed in the field or infrastructure equipment that cannot be moved freely. The electronic device in this case cannot change the angle or position of the antenna that receives the standard radio wave even if the radio wave correction clock function is added.

As a prior art, a configuration in which an antenna portion in which ferrite core antennas are arranged at right angles is provided apart from a watch portion is disclosed (for example, see Patent Document 1). The antenna portion is integrally fixed at the connecting portion so that the mutual angular relationship between the ferrite core antennas does not change, and is easily attached to a place with good reception. The time data which is better received by the antenna unit is output from the decoder. Based on this decoder output, the clock circuit is corrected to the correct time.
JP 2001-272482 A (pages 3 to 4, FIGS. 1 to 4)

  Usually, when a clock function is added to an electronic device, a real-time clock (RTC) board module, an IC package, or the like is used. In RTC, the error from the accurate time increases as time passes. Therefore, the RTC is required to add a radio-controlled clock function. In this case, the board module is manufactured based on the concept of a radio clock module incorporating even an antenna, a receiving IC, and a microcomputer. When the radio timepiece module is incorporated in an electronic device, the place is limited, and the position and orientation are likely to be limited. Therefore, the antenna can be set only in a fixed direction and position, and freedom is not good. As a result, the radio clock module may not be able to obtain good reception sensitivity.

  The present invention has been made in consideration of the above-described circumstances, and provides a substrate-mounted antenna, a radio clock module, and a method of using the same, which is a mounted substrate product to be incorporated in an electronic device, and has better reception sensitivity. It is something to try.

  A board mounted antenna according to the present invention is a connection base portion having a bar antenna having a coil containing a magnetic core, a connection terminal, and a tuning capacitor circuit portion connected to the connection line of the coil on the upper portion. And a part of the connection pedestal portion including the bar antenna and the circuit portion, and a slit for combining with the connection pedestal portion is provided, and the bar antenna is used with the connection pedestal portion as a fixed point. And a protective case which can be rotated or slid.

  According to the board mounted antenna according to the present invention, the bar antenna can be rotated or slid by the combination of the connection base and the case provided with the slit. Thereby, the antenna position and orientation can be changed and adjusted even after mounting on the board. A tuning capacitor circuit section is mounted on the connection base section. As a result, the connection line extending from the coil can be optimized (minimized). That is, even if the bar antenna slides in any direction along the slit, a connection line having the same length is required, and the balance is good.

  A board-mounted antenna according to the present invention includes a bar antenna having a coil containing a magnetic core, a connection pedestal having a connection terminal and connected to a connection line of the coil, and one of the bar antenna and the connection pedestal. A protective case provided with a slit to be combined with the connection pedestal portion, and capable of rotating or sliding the bar antenna with the connection pedestal portion as a fixed point. is doing.

  According to the board-mounted antenna according to the present invention, the bar antenna can be rotated or slid by a combination of the connection base and the case with the slit. Thereby, the antenna position can be changed and the orientation can be adjusted even after mounting on the board. Further, the connection line extending from the coil on the connection base portion can be optimized (minimized). That is, even if the bar antenna slides in any direction along the slit, a connection line having the same length is required, and the balance is good.

In each of the above-described board-mounted antennas according to the present invention, high reliability can be obtained with respect to a detailed configuration in which the bar antenna can be rotated or slid by having any of the following features.
The connection pedestal has a cylindrical composite having different diameters sandwiched between the slits so as to make frictional contact with the slit edge.
The connection pedestal has a cylindrical composite with different diameters sandwiched between the slits so as to make frictional contact with the slit edge, and the case has a slit width between both ends and both ends of the slit. It has a slide stopper with a slightly wide area.
The connection pedestal is provided with a stopper for limiting the range of the rotation angle of the case.
The case is characterized in that a part divided into two along the slit is bonded to be combined with the connection base.
The case is characterized in that a shape for supporting both ends of the magnetic core is added to both inner side surfaces in the longitudinal direction.
The case is characterized in that a structure for passing a erection member for supporting the magnetic core from both inner side surfaces in the longitudinal direction is added.

  A radio clock module according to the present invention includes a radio clock circuit configuration modularized on a wiring board, and a receiving antenna mechanism whose arrangement can be changed within a predetermined range for obtaining time data in the radio clock circuit configuration. .

  According to the radio timepiece module of the present invention, the receiving antenna mechanism can change the antenna position and adjust the orientation even after the module itself is attached.

The radio timepiece module according to the present invention has any one of the following features, which contributes to improving the reliability of the detailed configuration so that the bar antenna can be rotated or slid, or can be arranged with a higher degree of freedom.
The receiving antenna mechanism has an LC circuit including a bar antenna having a coil containing a magnetic core and a tuning capacitor connected to the coil, and a protective case for housing the LC circuit, and The bar antenna can be rotated or slid together with the case with a mounting portion as a fixed point.
The receiving antenna mechanism includes an LC circuit including a bar antenna having a coil containing a magnetic core, a tuning capacitor connected to the coil and mounted on the wiring board side, and a protective case for housing the bar antenna. The bar antenna can be rotated or slid along with the case with a mounting portion with the wiring board as a fixed point.
The reception antenna mechanism includes an LC circuit including a bar antenna having a coil containing a magnetic core and a tuning capacitor connected to the coil, and a protective coating member of the LC circuit to which a pasting region is added, The bar antenna has an arbitrary arrangement form with the sticking area as a fixed point.
The reception antenna mechanism includes an LC circuit including a bar antenna having a coil containing a magnetic core, a tuning capacitor connected to the coil and mounted on the wiring board side, and a protective coating for the bar antenna to which a pasting region is added The bar antenna has an arbitrary arrangement form with the attachment area as a fixed point.

  A radio timepiece module according to the present invention is a radio timepiece module that receives a standard radio wave including time information and corrects a time, and includes a wiring board, and a clock circuit unit that is mounted on the wiring board and has at least a time integration circuit. A reception antenna mechanism that receives the standard radio wave, a reception circuit unit that is mounted on the wiring board and obtains reception data from the reception antenna mechanism, and that is mounted on the wiring board according to the reception data from the reception circuit unit A control circuit for correcting the time of the time integration circuit, and the receiving antenna mechanism includes a bar antenna having a coil containing a magnetic core and a circuit unit of a tuning capacitor connected to the coil, and at least the bar The antenna installation position is variable within a predetermined range.

  According to the radio timepiece module according to the present invention, at least the bar antenna installation position is variable within a predetermined range in the reception antenna mechanism. Thereby, the antenna position can be changed and the orientation can be adjusted even after the module itself is attached.

The radio timepiece module according to the present invention has any one of the following features, which contributes to improving the reliability of the detailed configuration in which the bar antenna can be rotated or slid.
A connection base provided on the wiring board; a circuit board on which the circuit portion of the tuning capacitor provided on the connection base is mounted; and a protective case in which the circuit board and the bar antenna are accommodated. The circuit board is electrically connected to the wiring board side via a connection base, and the bar antenna can be rotated or slid together with the case with the connection base as a fixed point. It is characterized by becoming.
A connection pedestal provided on the wiring board; and a protective case in which the upper part of the connection pedestal and the bar antenna are housed, and the circuit portion of the tuning capacitor is mounted on the board. The bar antenna terminals are electrically connected to the wiring board side via the connection pedestal portion, and the bar antenna can be rotated or slid together with the case with the connection pedestal portion as a fixed point. It is characterized by becoming.
The circuit board further includes an inspection unit capable of monitoring a value corresponding to the standard radio wave received and amplified by the reception circuit unit on the wiring board.
The wiring board is a printed wiring board or a flexible wiring board.

  A method of using a radio clock module according to the present invention is a method of using a radio clock module that receives a standard radio wave including time information and corrects the time. The radio clock module is a radio clock that is modularized on a wiring board. Including a circuit configuration and a receiving antenna mechanism whose arrangement can be changed within a predetermined range for obtaining time data in the radio clock circuit configuration, the radio clock module is incorporated in an electronic device, and an installation position of the electronic device is determined Then, the direction and position of the antenna of the receiving antenna mechanism are adjusted and determined while examining the receiving sensitivity of the receiving antenna mechanism.

  According to the method of using the radio timepiece module according to the present invention, after the installation position of the electronic device incorporating the radio timepiece module is determined, the direction and position of the antenna with good reception sensitivity of the reception antenna mechanism are adjusted and determined. To. Thus, the radio timepiece module can be used effectively without being influenced by the installation conditions of the electronic device.

  In the method for using the radio timepiece module according to the present invention, the radio timepiece module includes an inspection unit capable of monitoring a value according to the reception sensitivity of the reception antenna mechanism on the wiring board. It is characterized by use. Contributes to easier inspection of reception sensitivity.

BEST MODE FOR CARRYING OUT THE INVENTION

  FIG. 1 is a configuration diagram showing the main configuration of a board mounted antenna according to the first embodiment of the present invention. The protective case is shown in cross section. 2A and 2B are assembly projection views of the configuration of FIG. FIG. 3 is an equivalent circuit diagram of the LC circuit constituting the antenna unit. This will be described below with reference to these drawings.

  The bar antenna 100 has a coil 102 containing a magnetic core 101. The connection base part 14 has connection terminals 15 (151 to 153) penetrating from the upper part to the lower part. The connection terminals 151 and 152 on the connection pedestal 14 are connected to the connection wires 102a and 102b of the coil 102, respectively. Each of the connection lines 102a and 102b may be insulated. The connection pedestal portion 14 is mounted with a circuit portion 16 of tuning capacitors 161 and 162 connected to the coil 102 on the upper portion thereof. Here, the tuning capacitors 161 and 162 are capacitors for 40 kHz (Fukushima transmitting station) and 60 kHz (Kyushu transmitting station), respectively, so as to correspond to the frequency of the base station transmitting the standard radio wave. The circuit unit 16 may be a circuit board. The circuit section 16 is connected to a predetermined section of the connection terminal 15 and constitutes the LC circuit shown in FIG. The circuit part 16 may be protected by a resin member. The connection terminals 15 (151 to 153) on the lower side of the connection pedestal portion 14 are used as external terminals and serve as mounting fixing portions.

  The protective case 18 accommodates a part of the connection base part 14 including the bar antenna 100 and the circuit part 16. The case 18 is provided with a slit 181 so as to sandwich the connection base 14. The case 18 is configured such that the bar antenna 100 can be rotated (arrow R) or slid (arrow S) by the slit 181 with the connection base portion 14 as a fixed point. Therefore, it is important that the connection lines 102 a and 102 b to the connection terminal 15 of the coil 102 have a length with a margin added to the maximum slide amount of the bar antenna 100.

  The connection pedestal 14 and the protective case 18 are made of, for example, insulating resin members made of the same material. The connecting pedestal 14 needs to be combined with the case 18 so as not to easily come off and be brought into frictional contact with the edge of the slit 181. For this reason, the connection pedestal portion 14 is a composite of columnar shapes 141 to 143 having different diameters. That is, the edge portion of the slit 181 is in frictional contact with the small-diameter columnar shape 142 having a groove shape between the columnar shapes 141 and 143.

  With respect to the case 18, the slide stopper 182 having a region slightly wider than the width of the slit 181 is provided between both ends of the slit 181. Thereby, the slide of the case 18 can be easily fixed at a predetermined position of the ride stopper 182 and can be easily rotated there. The case 18 is configured by adhering components 18 a and 18 b that are divided into two along the slit 181 in order to be combined with the connection base 14. In addition, the case 18 has a recess 183 in which both ends of the magnetic core 101 are fitted on the inner side surface in the longitudinal direction in order to support both ends of the magnetic core 101.

  According to the above embodiment, the bar antenna 100 can be rotated or slid by the combination of the case 18 provided with the connection base 14 and the slit 181. Thereby, the position and orientation of the bar antenna 100 can be changed and adjusted even after installation. Further, the circuit portion 16 of the tuning capacitors 161 and 162 is mounted on the connection base portion 14. Thus, the connection lines 102a and 102b extending from the coil 102 to the connection terminal 15 can be optimized (minimized). That is, even if the bar antenna 100 slides in any direction along the slit 181, the connection wires 102 a and 102 b having the same length are required, and the balance is good.

  In addition, although the connection base part 14 showed the structure formed with the composite_body | complex of cylindrical shape 141-143 from which a diameter differs, it does not restrict to this. The small-diameter columnar shape 142 is necessary, but the portions of the columnar shapes 141 and 143 are not problematic even if they are not cylindrical. Moreover, regarding the case 18, although the structure which has the slide stopper 182 between the both ends and both ends of the slit 181 was shown, the slide stopper 182 may not be provided but the structure of the linear slit 181 may be taken. In addition, the mechanism for supporting both ends of the magnetic core 101 is not limited to the recess 183, and various other methods such as providing a protrusion may be considered.

  FIG. 4 is a block diagram showing a main configuration of a board mounted antenna according to the second embodiment of the present invention. The protective case is shown in cross section. 5A and 5B are assembly projection views of the configuration of FIG. The same parts as those in the first embodiment will be described with the same reference numerals.

  The bar antenna 100 has a coil 102 containing a magnetic core 101. The connection pedestal 24 has connection terminals 25 (251 to 253) penetrating from the upper part to the lower part. The connection terminals 251 and 252 at the upper part of the connection base 24 are connected to the connection wires 102a and 102b of the coil 102, respectively. Each of the connection lines 102a and 102b may be insulated. The connection terminals 25 (251 to 253) on the lower side of the connection pedestal 24 are used as external terminals and serve as mounting and fixing parts. The connection terminal 253 is a dummy in this case, but contributes to fixing.

  The protective case 28 accommodates part of the bar antenna 100 and the connection base 24. The case 28 is provided with a slit 281 so as to sandwich the connection base 24. The case 28 is configured so that the bar antenna 100 can be rotated (arrow R) or slid (arrow S) with the connection base 24 as a fixed point by the slit 281. Therefore, it is important that the connection lines 102 a and 102 b to the connection terminal 15 of the coil 102 have a length with a margin added to the maximum slide amount of the bar antenna 100.

  The connection base 24 and the protective case 28 are made of, for example, insulating resin members made of the same material. The connecting pedestal 24 needs to be combined with the case 28 so as not to easily come off and be brought into frictional contact with the edge of the slit 281. For this reason, the connection pedestal portion 24 is a composite of columnar shapes 241 to 243 having different diameters. In other words, the edge of the slit 281 is in frictional contact with the small-diameter columnar shape 242 in the form of a groove between the columnar shapes 241 and 243.

  There is a possibility that the diameter of the columnar shape of the connection pedestal 24 can be made smaller than the connection pedestal 14 in the first embodiment because the circuit unit 16 is not mounted. Accordingly, the width of the slit 281 is also reduced, and it is easy to prevent intrusion of dust and the like.

  Regarding the case 28, the slit 281 is linear, and both end portions thereof are rounded in accordance with the diameter of the columnar shape 242 of the connection base 24. As a result, the case 28 can be freely slid and the same hardness can be obtained no matter where it is rotated. The case 28 is configured by adhering components 28 a and 28 b that are divided into two along the slit 281 for combination with the connection base 24. Further, the case 28 is provided with a structure for passing the erection member 282 from the inner side surface in the longitudinal direction, and the magnetic core 101 is supported. The erection member 282 may be made of the same material as the case 28. The end of the erection member 282 is inserted and fixed in a guide groove 283 provided on the inner side surface of the case 28 in the longitudinal direction. The erection member 282 is narrower than the case 28, and gaps G1 and G2 with the case 28 are formed. The connection lines 102a and 102b of the coil 102 are passed through the gaps G1 and G2, respectively. Such a configuration contributes to prevention of entanglement of the connection lines 102a and 102b.

  According to the above embodiment, the bar antenna 100 can be rotated or slid by the combination of the connection base 24 and the case 28 with the slit 281. Thereby, the position and orientation of the bar antenna 100 can be changed and adjusted even after installation. Further, the connection wires 102a and 102b extending from the coil 102 are connected to the connection terminal 15 of the connection base portion 24, and can be optimized (minimized). That is, even if the bar antenna 100 slides in any direction along the slit 281, the connection wires 102 a and 102 b having the same length are necessary, and the balance is good.

  In addition, although the connection base part 24 showed the structure formed with the composite_body | complex of the column-shaped 241-243 from which a diameter differs, it does not restrict to this. The small-diameter columnar shape 242 is necessary, but the portions of the columnar shapes 241 and 243 are not problematic even if they are not cylindrical. Further, the configuration of the linear slit 281 has been shown with respect to the case 28. However, the present invention is not limited to this, and as in the first embodiment, a slightly wide area is provided between both ends and both ends of the slit 281 as a slide stopper. It may be configured to function. Also, various mechanisms for supporting the magnetic core 101 are conceivable, such as providing a recess (183), a protrusion, and the like as in the first embodiment.

FIG. 6 is a plan view showing a main part configuration of a board mounted antenna according to the third embodiment of the present invention, and FIG. 7 is a configuration diagram showing main parts of FIG. The same code | symbol is attached | subjected to the location similar to the said 1st Embodiment or 2nd Embodiment.
The rotation stopper 30 is a mechanism that prevents unnecessary rotation of the case 18 or 28 in the configuration of the first embodiment or the second embodiment. The rotation stopper 30 is mounted on the connection base 14 (24), for example, and the outer pin 31 limits the rotation angle of the case 18 (28). This prevents the connecting wires 102a and 102b of the internal bar antenna 100 from being twisted unnecessarily. That is, it is a part for preventing the case 18 (28) from rotating once. FIG. 6 shows counterclockwise rotation control, but the same applies to clockwise rotation.

  With reference to FIG. 7, an example in which the rotation stopper 30 is incorporated in the connection base 14 will be described. The rotation stopper 30 has a form in which an outer pin 31 facing the support member 32 is provided. An inner pin 33 is provided in the support member 32. For example, the inner diameter of the support member 32 is the same as the diameter of the columnar shape 142 of the connection base portion 14. The support member 32 is mounted on the columnar shape 143 of the connection base 14. An idle groove 143t is provided on the cylindrical shape 143, and the inner pin 33 is disposed in the idle groove 143t. Thereby, the rotation stopper 30 itself can be rotated by the amount of the play groove 143t. The rotation stopper 30 is pressed on the slit side of the case 18 to be combined. In the rotation stopper 30, the outer pins 31 are arranged in a direction orthogonal to the longitudinal direction of the case 18 in a state where the connection lines 102 a and 102 b of the bar antenna 100 are most relaxed (FIG. 6).

  With the above configuration, until the case 18 contacts the outer pin 31, the left and right rotatable ranges θ1 and θ2 corresponding to the rotation by the play groove 143t after the contact with the outer pin 31 are obtained. Accordingly, unnecessary twisting and entanglement of the connection lines 102a and 102b of the bar antenna 100 can be prevented. Even if such a rotation stopper 30 is used for a board-mounted antenna having the case 28 in the configuration of the second embodiment, the same effect can be obtained.

FIG. 8 is a plan view showing the main configuration of a radio timepiece module according to the fourth embodiment of the present invention. The radio clock module 40 is configured on the wiring board 41 and has a function of receiving a standard radio wave including time information and correcting the time. The wiring board 41 may be a printed wiring board or a flexible wiring board.
The clock circuit unit 42 includes a control circuit 421 and a time integration circuit 422, and is mounted on the wiring board 41 by IC. As the receiving antenna mechanism 43, for example, the configuration of the board mounted antenna of the first embodiment is used. The receiving circuit unit 44 is mounted on the wiring board 41 by IC and acquires received data from the receiving antenna mechanism 43. The control circuit 421 corrects the time of the time integration circuit 422 according to the reception data from the reception circuit unit 44.

  The receiving antenna mechanism 43 has the bar antenna 100 as shown in the first embodiment. The circuit portion 16 of the tuning capacitor (161, 162) connected to the coil (102) (not shown) is mounted on the connection base portion. The connection base 14 has the connection terminal 15 mounted on the wiring board 41. The LC circuit including the bar antenna 100 and the circuit unit 16 is housed in a protective case 18. The case 18 is combined with the connection pedestal 14 at the slit 181 and is in a frictional contact state. With this slit 181, the bar antenna 100 can be rotated or slid as indicated by a broken line with the connection base 14 as a fixed point.

  The receiving circuit unit 44 is provided with a terminal 441 for confirming a current value (or voltage value) corresponding to the demodulated radio wave or amplified radio wave from the receiving antenna mechanism 43. For example, the current value is monitored from the terminal 441 when the standard radio wave is received. The orientation and position of the bar antenna 100 are determined by the connection pedestal 14 and the case 18 so that the current value obtained at the terminal 441 becomes large while rotating or sliding the bar antenna 100.

  FIGS. 9A to 9F are plan views showing examples of changing the arrangement of the receiving antenna mechanism 43. FIGS. 9A and 9B are examples in which the position of the case 18, that is, the bar antenna 100 is slid, (C), (d) shows an example in which the direction of the bar antenna 100 is rotated, and (e), (f) shows an example in which the position of the bar antenna 100 is slid and rotated to change the direction. ing. Thus, the receiving antenna mechanism 43 has a configuration in which the arrangement can be changed within a predetermined range in order to acquire time data in the radio timepiece circuit configuration. As shown in the third embodiment, the receiving antenna mechanism 43 may be restricted in rotation by adding a rotation stopper having the configuration shown in FIGS. The bar antenna 100 is easily affected by noise from electronic components mounted on the wiring board 41. It is useful to move the bar antenna 100 to a place where it is hardly affected by noise as much as possible, or to a place where reception sensitivity is good.

  FIG. 10 is a plan view showing the main configuration of the radio timepiece module according to the fifth embodiment of the present invention. The same parts as those in the fourth embodiment are denoted by the same reference numerals. The radio clock module 50 differs from the configuration of FIG. 8 in the following part. As the receiving antenna mechanism 53, the configuration of the board mounted antenna of the second embodiment is used. Therefore, the circuit section 16 including the tuning capacitors (161, 162) is not mounted on the connection base section 24. The circuit 16 is mounted on the wiring board 41. Other configurations are the same as those of the fourth embodiment. Similarly to the configuration shown in FIG. 9, the receiving antenna mechanism 53 has a configuration in which the arrangement can be changed within a predetermined range in order to acquire time data in the radio clock circuit configuration. As shown in the third embodiment, the receiving antenna mechanism 53 may be restricted in rotation by adding a rotation stopper having the configuration shown in FIGS. It is useful to move the bar antenna 100 to a place where it is hardly affected by noise as much as possible, or to a place where reception sensitivity is good.

  FIG. 11 is a plan view showing a main configuration of a radio timepiece module according to the sixth embodiment of the present invention. The same code | symbol is attached | subjected to the location similar to the said 4th Embodiment. The radio clock module 60 differs from the configuration of FIG. As the receiving antenna mechanism 63, a connection pedestal or case as shown in the fourth embodiment is not used. The bar antenna 100 and the circuit unit 16 constitute an LC circuit unit 631 as shown in FIG. The LC circuit unit 631 is covered with a protective coating member 64. The adhesive tape 65 can fix the bar antenna 100 at an arbitrary location. The bar antenna 100 can realize an arbitrary arrangement form within the allowable range of the lengths of the connection lines 632a and 632b of the LC circuit 631. The connection lines 632a and 632b are preferably insulated and protected. For example, the bar antenna 100 can be arranged at a place other than the mounting board, for example, an arbitrary place in the electronic device in which the radio clock module 60 is incorporated.

  FIG. 12 is a plan view showing the main configuration of a radio timepiece module according to the seventh embodiment of the present invention. The same parts as those in the fifth embodiment are denoted by the same reference numerals. The radio clock module 70 differs from the configuration of FIG. 10 in the following part. As the receiving antenna mechanism 73, a connection pedestal or case as shown in the fifth embodiment is not used. The circuit unit 16 including the tuning capacitors (161, 162) is mounted on the wiring board 41. Therefore, the bar antenna 100 and the circuit unit 16 are connected via the connection lines 102a and 102b of the coil (102). The bar antenna 100 is covered with a protective coating member 74. The connection lines 102a and 102b are preferably insulated and protected. The adhesive tape 75 can fix the bar antenna 100 at an arbitrary location. The bar antenna 100 can realize an arbitrary arrangement form within the allowable range of the lengths of the connection lines 102a and 102b. For example, the bar antenna 100 can be disposed at a place other than the mounting substrate, for example, an arbitrary place in the electronic device in which the radio clock module 70 is incorporated.

  According to the configuration of each of the fourth to seventh embodiments, the radio timepiece module incorporated in the electronic device can obtain better reception capability that is hardly affected by the installation location of the electronic device. Each of the receiving antenna mechanisms 43, 53, 63, 73 has at least the installation position of the bar antenna 100 variable within a predetermined range. That is, the bar antenna 100 can change the antenna position and adjust the orientation even after the module itself is mounted in the electronic device. As a result, a compact radio timepiece module with good reception sensitivity can be realized with only one bar antenna 100.

  FIG. 13 is a flowchart showing how to use the radio timepiece module according to the eighth embodiment of the present invention. For example, the radio timepiece module shown in any of the fourth to seventh embodiments is incorporated into an electronic device (S1). An electronic device is installed at a predetermined location (S2). In the case of infrastructure equipment, the installation location is often predetermined. Thereafter, the arrangement adjustment of the receiving antenna mechanism (adjustment and determination of the direction and position of the bar antenna (100)) is performed while checking the receiving sensitivity (S3). The reception sensitivity is checked by, for example, monitoring a terminal (441) that can confirm a current value (or voltage value) corresponding to a demodulated radio wave or an amplified radio wave in the reception circuit unit (44) on the wiring board of the radio clock module. When receiving the standard radio wave, the terminal (441) is monitored, and the current value increases while the direction and position of the antenna are moved.

  According to the method of using the radio timepiece module according to the present invention, after the installation position of the electronic device incorporating the radio timepiece module is determined, the direction and position of the antenna with good reception sensitivity of the reception antenna mechanism are adjusted, The arrangement of the receiving antenna mechanism is determined. Thus, the radio timepiece module can be used effectively without being influenced by the installation conditions of the electronic device.

  As described above, according to the present invention, it is convenient when a device that cannot move freely, for example, a watch, an electronic device, an infrastructure facility, etc. installed outdoors has a radio clock function. It is a compact radio clock module mounted on a wiring board, and the arrangement of the antenna mechanism can be changed. That is, a board-mounted antenna that can change the angle and position of only the antenna component is used. As a result, it is possible to adjust the antenna position and orientation that maximize the reception capability even after the radio timepiece module is mounted. As a result, it is possible to provide a board-mounted antenna, a radio clock module, and a method of using the same, which can improve reception sensitivity with a mounting board product to be incorporated into an electronic device.

The block diagram which shows the principal part structure of the board | substrate mounted antenna which concerns on 1st Embodiment. FIG. 2 is an assembly projection view of the configuration of FIG. The equivalent circuit diagram of LC circuit which comprises an antenna part. The block diagram which shows the principal part structure of the board | substrate mounted antenna which concerns on 2nd Embodiment. FIG. 5 is an assembly projection view of the configuration of FIG. 4. The top view which shows the principal part structure of the board | substrate mounted antenna which concerns on 3rd Embodiment. The block diagram which shows the principal part components of FIG. The top view which shows the principal part structure of the radio timepiece module which concerns on 4th Embodiment. Each top view which shows the example of arrangement | positioning change of a receiving antenna mechanism. The top view which shows the principal part structure of the radio timepiece module which concerns on 5th Embodiment. The top view which shows the principal part structure of the radio timepiece module which concerns on 6th Embodiment. The top view which shows the principal part structure of the radio timepiece module which concerns on 7th Embodiment. The flowchart which shows the usage method of the radio timepiece module which concerns on 8th Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Bar antenna, 101 ... Magnetic core, 102 ... Coil, 102a, 102b ... Connection line, 14, 24 ... Connection base part, 141-143, 241-243 ... Cylindrical shape, 143t ... Play groove, 15 (151-153) , 25 (251 to 253) ... connection terminal, 16 ... circuit portion of tuning capacitor, 161, 162 ... tuning capacitor, 18, 28 ... case, 181, 281 ... slit, 182 ... slide stopper, 183 ... depression, 282 ... Installation member, 283 ... Guide groove, G1, G2 ... Gap, 30 ... Rotation stopper, 31 ... Outer pin, 32 ... Support member, 33 ... Inner pin, 40, 50, 60, 70 ... Radio clock module, 41 ... Wiring board 42, clock circuit section, 421, control circuit, 422, time integration circuit, 43, 53, 63, 73, receiving antenna mechanism, 44,. Shin circuit portion, 631 ... LC circuit unit, 632a, 632b ... connection lines, 64, 74 ... protective coating member, 65, 75 ... adhesive tape, S1 to S3 ... processing steps.

Claims (20)

A bar antenna having a coil with a magnetic core;
A connection pedestal having a connection terminal and a circuit portion of a tuning capacitor connected to the connection line of the coil on the top;
The bar antenna and a part of the connection pedestal portion including the circuit portion are accommodated, and a slit for combining with the connection pedestal portion is provided, and the bar antenna rotates with the connection pedestal portion as a fixed point. Or a protective case that can be slid,
A board-mounted antenna comprising: A bar antenna having a coil with a magnetic core;
A connection pedestal having a connection terminal and connected to the connection line of the coil;
The bar antenna and a part of the connection pedestal portion are accommodated, and a slit for combining with the connection pedestal portion is provided so that the bar antenna can be rotated or slid with the connection pedestal portion as a fixed point. A protective case,
A board-mounted antenna comprising: The board-mounted antenna according to claim 1, wherein the connection pedestal includes a cylindrical composite having different diameters sandwiched between the slits so as to be in frictional contact with the slit edge. The connection pedestal has a cylindrical composite with different diameters sandwiched between the slits so as to make frictional contact with the slit edge, and the case has a slit width between both ends and both ends of the slit. 3. The board mounted antenna according to claim 1, further comprising a slide stopper having a slightly wider area. The board mounting antenna according to any one of claims 1 to 4, wherein the connection base portion is provided with a stopper that limits a range of a rotation angle of the case. The board-mounted antenna according to any one of claims 1 to 5, wherein the case is configured by adhering components divided into two along the slit to be combined with the connection base portion. The substrate mounting antenna according to any one of claims 1 to 6, wherein the case has a shape for supporting both ends of the magnetic core on both inner side surfaces in the longitudinal direction. The board-mounted antenna according to any one of claims 1 to 7, wherein the case is provided with a structure for passing a construction member for supporting the magnetic core from both inner side surfaces in a longitudinal direction. Radio clock circuit configuration modularized on the wiring board,
A receiving antenna mechanism whose arrangement can be changed within a predetermined range for time data acquisition in the radio clock circuit configuration;
Radio clock module equipped with. The receiving antenna mechanism has an LC circuit including a bar antenna having a coil containing a magnetic core and a tuning capacitor connected to the coil, and a protective case for housing the LC circuit, and The radio clock module according to claim 9, wherein the bar antenna can be rotated or slid together with the case with a mounting portion as a fixed point. The receiving antenna mechanism includes an LC circuit including a bar antenna having a coil containing a magnetic core, a tuning capacitor connected to the coil and mounted on the wiring board side, and a protective case for housing the bar antenna. The radio timepiece module according to claim 9, wherein the bar antenna can be rotated or slid along with the case with a mounting portion with the wiring board as a fixed point. The reception antenna mechanism includes an LC circuit including a bar antenna having a coil containing a magnetic core and a tuning capacitor connected to the coil, and a protective coating member of the LC circuit to which a pasting region is added, The radio clock module according to claim 9, wherein the bar antenna has an arbitrary arrangement form with the pasting area as a fixed point. The reception antenna mechanism includes an LC circuit including a bar antenna having a coil containing a magnetic core, a tuning capacitor connected to the coil and mounted on the wiring board side, and a protective coating for the bar antenna to which a pasting region is added The radio clock module according to claim 9, wherein the bar antenna has an arbitrary arrangement form with the pasting area as a fixed point. A radio clock module that receives standard radio waves including time information and corrects the time,
A wiring board;
A clock circuit portion mounted on the wiring board and having at least a time integration circuit;
A receiving antenna mechanism for receiving the standard radio wave;
A receiving circuit unit that is mounted on the wiring board and acquires received data from the receiving antenna mechanism;
A control circuit that is mounted on the wiring board and corrects the time of the time integration circuit in accordance with received data from the receiving circuit unit, and
The receiving antenna mechanism includes a bar antenna having a coil containing a magnetic core and a circuit unit of a tuning capacitor connected to the coil, and at least a position where the bar antenna is installed is variable within a predetermined range. A connecting pedestal provided on the wiring board;
A circuit board provided on the connection pedestal portion and mounted with a circuit portion of the tuning capacitor;
A protective case for accommodating the circuit board and the bar antenna;
15. The circuit board is electrically connected to the wiring board side through a connection pedestal portion, and the bar antenna can be rotated or slid together with the case with the connection pedestal portion as a fixed point. The radio clock module described. A connecting pedestal provided on the wiring board;
A protective case in which the upper part of the connection base and the bar antenna are housed, and
The circuit part of the tuning capacitor is mounted on the board side, and the terminals of the bar antenna are electrically connected to the wiring board side via the connection base part, and the connection base part is used as a fixed point. The radio timepiece module according to claim 14, wherein the bar antenna is rotatable or slidable together with the case. The radio timepiece module according to any one of claims 14 to 16, further comprising an inspection unit capable of monitoring a value according to a standard radio wave received and amplified by the reception circuit unit on the wiring board. The radio timepiece module according to claim 9, wherein the wiring board is a printed wiring board or a flexible wiring board. A method of using a radio clock module that receives a standard radio wave including time information and corrects the time,
The radio clock module includes a radio clock circuit configuration modularized on a wiring board, and a receiving antenna mechanism whose arrangement can be changed in a predetermined range for obtaining time data in the radio clock circuit configuration,
The radio clock module is incorporated in an electronic device, and after the installation position of the electronic device is determined, the direction and position of the antenna of the receiving antenna mechanism are adjusted and determined while examining the receiving sensitivity of the receiving antenna mechanism. How to use the featured radio clock module. 20. The radio timepiece module according to claim 19, wherein the radio timepiece module includes an inspection unit capable of monitoring a value according to reception sensitivity of the reception antenna mechanism on the wiring board, and uses the inspection unit. How to use.

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