JP2015175673A - Timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a timepiece capable of precisely positioning an antenna, without increasing a number of components.SOLUTION: A bottom plate receiving ring 126 is fitted with a bottom plate 125. The bottom plate receiving ring 126 is formed with a projecting portion 126a for positioning an antenna, an antenna hook portion 126c, and an energizing portion 126d. A ring-shaped antenna 110 is formed with a notch portion 110a, a flange portion 110b, and a notch portion 110c. By engaging the projecting portion 126a for positioning the antenna and the notch portion 110c, the antenna is positioned in a plane surface direction. While the antenna hook portion 126c and the flange portion 110b are engaged, the antennal 110 is energized upward by the energizing portion 126d, thereby positioning the antenna in a vertical direction.

Description

  The present invention relates to a timepiece having a ring-shaped antenna body.

  In a GPS timepiece that acquires radio wave information from a GPS satellite and displays an accurate time, a clock using a ring-shaped antenna for receiving radio waves has been proposed. In such a GPS timepiece, in order to ensure good reception sensitivity of the ring-shaped antenna, it is necessary to accurately determine the position of the antenna with respect to the exterior case and the ground plane.

For example, it has been proposed to position the antenna in the vertical direction by attaching a ring-shaped biasing member formed of metal to the ground plane and engaging the biasing member with the antenna (Patent Document 1). .
Also, by attaching a ring-shaped urging member made of metal to the ground plate, engaging the urging member and the antenna, and providing a predetermined gap between the dial ring and the antenna located above the antenna It has been proposed to prevent damage to the antenna (Patent Document 2).

JP2013-181920A JP2013-181918A

  However, when the urging member as described above is provided, a plurality of screws are necessary for fixing the urging member, and it is necessary to provide a screw hole corresponding to the base plate. Therefore, the structure becomes complicated, and the cost increases due to the increase in the number of parts and the assembly process increases.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a timepiece capable of accurately positioning an antenna without increasing the number of parts.

  In order to solve the above problems, a timepiece according to the present invention includes a ring-shaped antenna and an antenna fixing member that fixes the antenna, and the antenna fixing member positions the antenna in a circumferential direction. Both a first positioning portion, a positioning portion including a second positioning portion that positions the antenna in the height direction, and a biasing portion that biases the antenna in the height direction are formed. Features.

  According to the present invention, the antenna fixing member includes not only the positioning portion including the first positioning portion for positioning the antenna in the circumferential direction and the second positioning portion for positioning the antenna in the height direction, but also the antenna in the height direction. Since the urging portion for urging is formed, the antenna can be accurately positioned without increasing the number of parts. In the present invention, the “ring shape” includes at least an O-type that is all connected and a C-type that is partially missing. In addition to the circular shape described in the specification, a square shape and a polygonal shape are included.

  In the timepiece described above, the antenna includes a bottom surface recess formed at a plurality of locations on the bottom surface and a stepped portion formed on an outer peripheral surface, and the first positioning portion engages with the bottom surface recess to engage the antenna. The second positioning portion includes a positioning hook portion that engages with the stepped portion to position the antenna in the height direction, and the biasing portion includes the positioning projection portion that positions the antenna in the circumferential direction. You may make it provide the spring part which contacts the bottom face of an antenna and urges | biases the said antenna to the said height direction. In this case, the antenna is positioned in the circumferential direction by engaging the concave portion of the bottom surface of the antenna and the positioning convex portion of the antenna fixing member. Further, the antenna is positioned in the height direction by engaging the step portion of the antenna and the positioning hook portion of the antenna fixing member. As described above, the antenna fixing member is not only provided with the first positioning portion for positioning the antenna in the circumferential direction and the second positioning portion for positioning the antenna in the height direction, but also with the antenna in the height direction. Since the urging portion for urging is formed, the antenna can be accurately positioned without increasing the number of parts.

  In the timepiece described above, the second positioning portion and the urging portion are formed at a plurality of locations in the circumferential direction, and the urging portion is located at a location between the two second positioning portions in the circumferential direction. It may be formed. In this case, since the second positioning portion for positioning the antenna in the height direction and the biasing portion for biasing the antenna in the height direction are alternately arranged, the force applied to the antenna is dispersed, and the antenna Can be positioned stably.

  In the timepiece described above, the urging unit may include a power supply member that is urged by a urging member to contact the antenna and to supply power to the antenna. In this case, since the power feeding member is urged by the urging member and contacts the antenna, power feeding is performed reliably. Moreover, since the power supply member functions as an urging portion that urges the antenna in the height direction, the number of locations where the urging portion is formed in the antenna fixing member can be reduced.

  In the timepiece described above, the antenna fixing member may be a member integrated with the main plate or a separate member. When the antenna fixing member is formed integrally with the ground plane, the assembly process of the antenna fixing member and the ground plane can be reduced. Further, when the antenna fixing member is formed separately from the ground plane, for example, the antenna fixing member is formed of a member having elasticity higher than that of the ground plane, so that the antenna is not biased more than necessary. And the second positioning portion can be formed.

  In the timepiece described above, the antenna fixing member may be a member separate from the ground plane, and may be formed of a member having higher elasticity than the ground plane. In this case, it is possible to form the urging portion and the second positioning portion that do not apply an excessive pressing force to the antenna.

  In the timepiece described above, the antenna fixing member may include a third positioning portion that positions the base plate in the circumferential direction and a fourth positioning portion that positions the base plate in the height direction. In this case, the ground plane can be accurately positioned by the antenna fixing member.

  In the timepiece described above, the antenna fixing member includes a fifth positioning portion that positions the antenna fixing member and the ground plane in a circumferential direction with respect to the exterior case, and the antenna fixing member and the ground plane with respect to the exterior case. You may make it provide the 6th positioning part positioned in a height direction. In this case, the antenna fixing member and the ground plane can be accurately positioned with respect to the exterior case, and as a result, the antenna can be accurately positioned with respect to the exterior case.

1 is an overall view of a GPS including an electronic timepiece according to an embodiment of the present invention. It is a perspective view which shows the whole electronic timepiece. FIG. 6 is a six-side view showing the entire electronic timepiece. It is a fragmentary sectional view showing the outline of an electronic timepiece. It is a schematic plan view which shows the external appearance of an electronic timepiece. It is an electric control block diagram of an electronic timepiece. It is a top view which shows the external appearance of an antenna. It is a bottom view which shows the external appearance of an antenna. It is an expansion | deployment perspective view which shows the external appearance of an antenna, a ground plane, and a ground plane receiving ring. It is a top view which shows the external appearance of a main-plate receiving ring. It is an expansion | deployment perspective view which shows the state which fitted the base plate receiving ring to the base plate. It is a top view which shows the state which fitted the base plate receiving ring to the base plate. It is a partially expanded plan view of the periphery of the contact portion between the main plate and the main plate receiving ring. It is a partially expanded perspective view of the contact part periphery of a main plate and a main plate receiving ring. It is a partially expanded perspective view of the contact part periphery of a main plate and a main plate receiving ring. It is a development perspective view showing the state where the case where the antenna connection pin was included was accommodated in the ground plate which fitted the ground plate receiving ring. It is a top view which shows the state which accommodated the case in which the antenna connection pin was included in the ground plane which fitted the ground plane receiving ring. It is an expansion | deployment perspective view which shows the state which installed the antenna in the installation part of the antenna in a ground plane receiving ring from the state shown in FIG. It is a top view which shows the state which installed the antenna in the installation part of the antenna in a ground-plate receiving ring from the state shown in FIG. It is a partially expanded perspective view of the periphery of the engaging portion between the main plate receiving ring and the antenna. It is a partially expanded perspective view of the periphery of the engaging portion between the main plate receiving ring and the antenna. (A) is sectional drawing which shows the state which urges | biases an antenna with the urging | biasing part of a ground-plate receiving ring, (B) is sectional drawing which shows the urging | biasing part of a ground-plate receiving ring. It is sectional drawing around the installation position of an antenna connection pin. It is the schematic which shows the external appearance of the electronic timepiece which concerns on a modification.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. However, in each figure, the size and scale of each part are appropriately changed from the actual ones. Further, since the embodiments described below are preferable specific examples of the present invention, various technically preferable limitations are attached thereto. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these forms.

<A: Outline of electronic watch>
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall view of a GPS including an electronic timepiece according to an embodiment of the present invention. First, an outline of GPS in which an electronic timepiece obtains current location information and time information using radio waves as external signals will be described.

  The electronic timepiece 10 is a wristwatch that receives radio waves (satellite signals) from the GPS satellite 8 and corrects the internal time. The electronic timepiece 10 is a surface opposite to the surface that contacts the arm (hereinafter referred to as the back surface) (hereinafter referred to as the surface). ) Is displayed. The GPS satellite 8 is a navigation satellite orbiting in a predetermined orbit in the earth's nourishing sky, and transmits a navigation message superimposed on a 1.57542 GHz radio wave (L1 wave) to the ground. In the following description, the 1.57542 GHz radio wave on which the navigation message is superimposed is referred to as a satellite signal. The satellite signal is a right-handed circularly polarized wave.

  Currently, there are about 31 GPS satellites 8 (only four are shown in FIG. 1), and in order to identify which GPS satellite 8 the satellite signal is transmitted from, each GPS satellite 8 has C A peculiar pattern of 1023 chips (1 ms cycle) called a / A code (Coarse / Acquisition Code) is superimposed on the satellite signal. In the C / A code, each chip is either +1 or -1, and looks like a random pattern. Therefore, by correlating the satellite signal and the pattern of each C / A code, the C / A code superimposed on the satellite signal can be detected.

  The GPS satellite 8 is equipped with an atomic clock, and the satellite signal includes extremely accurate GPS time information measured by the atomic clock. Further, a slight time error of the atomic clock mounted on each GPS satellite 8 is measured by the control segment on the ground, and the time correction parameter for correcting the time error is included in the satellite signal. The electronic timepiece 10 receives a satellite signal transmitted from one GPS satellite 8, and uses an accurate time (time information) obtained by using GPS time information and time correction parameters included therein as an internal time. And

  The satellite signal includes orbit information indicating the position of the GPS satellite 8 on the orbit. The electronic timepiece 10 can perform positioning calculation using GPS time information and orbit information. The positioning calculation is performed on the assumption that a certain amount of error is included in the internal time of the electronic timepiece 10. That is, in addition to the x, y, and z parameters for specifying the three-dimensional position of the electronic timepiece 10, the time error is also an unknown number. For this reason, the electronic timepiece 10 generally receives satellite signals transmitted from four or more GPS satellites 8 and performs positioning calculation using GPS time information and orbit information included therein to determine the current location. Find location information.

Next, a schematic configuration of the electronic timepiece 10 will be described. FIG. 2 is a perspective view showing the external appearance of the electronic timepiece, and FIG. 3 is a six-side view showing the external appearance of the electronic timepiece. FIG. 4 is a partial cross-sectional view showing an outline of the electronic timepiece.
FIG. 3A is a plan view of the electronic timepiece as viewed from the front side. FIG.3 (b) is the side view which looked at 9 o'clock direction from 3 o'clock direction. FIG.3 (c) is the side view which looked at 6 o'clock direction from 12 o'clock direction. FIG. 3D is a side view of the 3 o'clock direction viewed from 9 o'clock direction, and FIG. 3E is a side view of the 12 o'clock direction viewed from 6 o'clock direction. FIG. 3F is a plan view seen from the back side. In addition, the electronic timepiece of this embodiment has a world time function and a chronograph function.

  As shown in FIGS. 2 and 3, the electronic timepiece 10 includes an exterior case 30, a cover glass 33, and a back cover 34. The exterior case 30 is configured by fitting a bezel 32 made of ceramic to a cylindrical case 31 made of metal. On the inner peripheral side of the bezel 32, a disk-shaped dial plate 11 is disposed as a time display portion via a ring-shaped dial ring 40 made of plastic.

  The dial 11 is provided with pointers 21.22 and 23. Further, the dial 11 has a first small window 70 and a pointer 71 that are circular in the 2 o'clock direction from a center, and a second small window 80 and a pointer 81 that is circular in the 10 o'clock direction are circular in the 6 o'clock direction. The third small window 90 and the pointer 91 are provided, and the calendar small window 15 that is rectangular in the 4 o'clock direction is provided. The dial 11, the hands 21, 22, 23, the first small window 70, the second small window 80, the third small window 90, the calendar small window 15, and the like are visible through the cover glass 33.

  On the side surface of the exterior case 30, the A button 61 is positioned at the 8 o'clock position, the B button 62 is positioned at the 10 o'clock position, the C button 63 is positioned at the 2 o'clock position, and the 4 o'clock position. A D button 64 is provided at a position in the direction, and a crown 50 is provided at a position in the 3 o'clock direction. When these A button 61, B button 62, C button 63, D button 64, and crown 50 are operated, an operation signal corresponding to the operation is output.

As shown in FIG. 4, in the electronic timepiece 10, among the two openings of the metal outer case 30, the opening on the front surface side is closed with the cover glass 33 via the bezel 32, and the opening on the back surface side Is closed by a back cover 34 made of metal.
Inside the outer case 30, the dial ring 40 attached to the inner periphery of the bezel 32, the light-transmitting dial plate 11, the pointer shaft 25 penetrating the dial plate 11, and the needle shaft 25 circulates around the needle shaft 25. Needles 21, 22, and 23, and a driving mechanism 140 that drives the hands 21, 22, and 23 are provided.
The pointer shaft 25 is provided along a central axis that passes through the center of the exterior case 30 in plan view and extends in the front-back direction.

  The dial ring 40 has an outer peripheral end in contact with the inner peripheral surface of the bezel 32, a flat plate portion parallel to the cover glass 33, and an inner peripheral end in contact with the dial plate 11. An inclined part inclined to the side is provided. The dial ring 40 has a ring shape in plan view and a mortar shape in sectional view. A donut-shaped storage space is formed by the flat plate portion of the dial ring 40, the inclined portion, and the inner peripheral surface of the bezel 32, and the ring-shaped antenna 110 is stored in the storage space.

  The antenna 110 is formed by using a ring-shaped dielectric as a base material and forming a metal antenna pattern on the base material by plating or silver paste printing. The antenna 110 is disposed on the outer periphery of the dial plate 11, disposed on the inner peripheral surface side of the bezel 32, and further covered with a dial ring 40 formed of plastic and a cover glass 33, so that excellent reception is achieved. It is possible to ensure. As the dielectric, a dielectric material that can be used at high frequencies, such as titanium oxide, can be mixed with the resin and molded, and this makes it possible to further reduce the size of the antenna in combination with the shortening of the wavelength of the dielectric.

  The dial 11 is a circular plate that displays the time inside the outer case 30, is formed of a light-transmitting material such as plastic, and includes hands 21, 22, and 23 between the cover glass 33, It is arranged inside the dial ring 40.

  Between the dial plate 11 and the ground plate 125 to which the drive mechanism 140 is attached, a solar panel 135 that performs photovoltaic power generation is provided. The solar panel 135 is a circular flat plate in which a plurality of solar cells (photovoltaic elements) that convert light energy into electric energy (electric power) are connected in series. The solar panel 135 also has a sunlight detection function. On the dial plate 11, the solar panel 135, and the ground plate 125, the pointer shaft 25, the pointer 71 of the first small window 70, the pointer 81 of the second small window 80, and the pointer shaft of the pointer 91 of the third small window 90 (not shown). And the opening of the calendar small window 15 is formed.

  The drive mechanism 140 is attached to the ground plane 125 and is covered with the circuit board 120 from the back side. The drive mechanism 140 has a step motor and a wheel train such as a gear, and the hands 21, 22 and 23 are driven by the step motor rotating the needle shaft 25 via the wheel train. 2 and 3, the pointer 71 of the first small window 70, the pointer 81 of the second small window 80, and the pointer 91 of the third small window 90 also have a similar drive mechanism (not shown). The hands 71, 81, 91 are driven.

  The circuit board 120 includes a receiving unit (GPS module) 122, a control unit 150, and a secondary battery 130 such as a lithium ion battery. The secondary battery 130 is charged with the power generated by the solar panel 135. Further, the circuit board 120 and the antenna 110 are connected using the antenna connection pins 115. A circuit retainer 123 is provided below the circuit board 120.

  The antenna 110 is fed through a feeding point, and an antenna connection pin 115 disposed on the back side of the antenna 110 is connected to the feeding point. The antenna connection pin 115 is a pin-shaped connector made of metal, protrudes from the circuit board 120, passes through an insertion hole opened in the ground plate 125, and is inserted into the storage space. As a result, the circuit board 120 and the antenna 110 inside the storage space are connected by the antenna connection pins 115.

  The ground plate 125 is made of plastic parts, has a mounting portion for the drive mechanism 140 and the secondary battery 130 inside, and a solar panel 135 and a fixing portion for the dial 11 are provided on the upper surface.

The ground plane receiving ring 126 is provided between the outer periphery of the ground plane 125 and the inner periphery of the case 31 constituting the exterior case 30, and performs positioning and fixing of the antenna 110. In this embodiment, by using a material softer than the base plate 125 material as the material of the base plate receiving ring 126, an antenna hook portion and a biasing portion are formed on the base plate receiving ring 126, and the antenna 110 is positioned.
The main plate receiving ring 126 is disposed on the outer peripheral portion of the main plate 125, and the projection shape provided on the inner periphery of the main plate receiving ring 126 is applied to the outer periphery of the main plate 125, thereby positioning in the planar direction. Further, the base plate receiving ring 126 is positioned in the height direction by engaging with a hook provided on the outer periphery of the base plate 125.
Furthermore, the projection shape provided on the outer periphery of the base plate receiving ring 126 hits the inner diameter of the case 31 constituting the exterior case 30, and the planar position of the entire movement is determined. By engaging with the flange 31a of the case 31, the base plate 125 and the base plate receiver Positioning of the entire movement including the ring 126 in the planar direction is performed. Details will be described later.
Since the main plate receiving ring 126 and the outer case 30 are in direct contact with each other and positioning in the plane direction and the height direction is performed, the position of the antenna 110 positioned in the main plate receiving ring 126 is also accurately determined with respect to the outer case 30. Therefore, it is possible to achieve good reception sensitivity without variation of individual differences.
Details of the main plate receiving ring 126 will be described later.

<B: Electronic watch display function>

Next, the display function of the electronic timepiece 10 will be described. FIG. 5 is a schematic plan view showing the appearance of the electronic timepiece.
As shown in FIG. 5, on the outermost periphery of the dial 11, a scale that divides the outer circumference into 6 to 60 divisions and a 1/5 scale that divides the scale into 5 divisions are written. Using this scale, the hand 21 displays “second” of the chronograph function, the hand 22 displays “minute” of the internal clock, and the hand 23 displays “hour” of the internal clock. The chronograph function can be used by operating the C button 63 and the D button 64.

  On the outer periphery of the circular first small window 70 provided on the dial 11, a scale that divides the outer periphery into 60 divisions and numbers in increments of 10 from “10” to “60” are written. The pointer 71 displays “minute” of the chronograph function using this scale.

On the outer periphery of the circular second small window 80 provided on the dial 11, a scale that divides the outer periphery into 60 divisions and numbers from “0” to “11” are written. The pointer 81 displays “second” of the internal clock using this scale.
The alphabet “Y” is written at the 52 second position of the second small window 80, and the alphabet “N” is written at the 38 second position. This alphabetic character represents the reception result of the satellite signal (Y: reception success, N: reception failure) and the setting of automatic reception of the satellite signal (Y: automatic reception ON, N: automatic reception OFF). When the user operates the B button 62, the pointer 81 indicates either “Y” or “N”, and displays the reception result of the satellite signal. The user can set ON / OFF of automatic reception of satellite signals by operating the A button 61 and the B button 62 and setting the pointer 81 to “Y” or “N”. When the user operates the B button 62 to cause the electronic timepiece 10 to manually receive a satellite signal, the hands 71 display the number of captured satellites.
In this embodiment, the notation “Y” is provided at the position of 52 seconds and the notation “N” is provided at the position of 38 seconds. However, the present invention is not limited to this. The notation “Y” and “N” is preferably provided at a position where the small window including the reception result display 83 is easily provided according to the position where the small window is provided.

The outer periphery of the circular third small window 90 provided on the dial 11 will be described. In the following description of the outer peripheral range, “n-hour direction” (n is an arbitrary natural number) is the direction when the circular outer periphery is viewed from the center of the third small window 90.
On the outer periphery of the range from the 12 o'clock direction to the 6 o'clock direction of the third small window 90, a scale that divides this range into 6 and numbers from “0” to “5” are written. The pointer 91 displays “hour” of the chronograph function using this scale. In the chronograph function, it is possible to measure time up to 5 hours 59 minutes 59 seconds using the hands 21, 71, 91.

  On the outer periphery of the third small window 90 in the range from 6 o'clock to 7 o'clock, the letter “DST” and the symbol “◯” are written. DST (daylight saving time) means daylight saving time. These letters and symbols represent the setting of daylight saving time (DST: daylight saving time ON, ○: daylight saving time OFF). By operating the crown 50 and the B button 62 by the user and setting the hands 91 to “DST” or “◯”, the electronic timepiece 10 can be set to ON / OFF for daylight saving time.

  On the outer periphery of the third small window 90 in the range from 7 o'clock to 9 o'clock, a crescent sickle-shaped symbol 92 is formed along the circumference, with the base end in the 9 o'clock direction being thick and the tip in the 7 o'clock direction being thin. It is written. The symbol 92 is a power indicator of the secondary battery 130 (see FIG. 4), and the pointer 91 indicates one of the base end, the tip end, and the middle depending on the remaining battery level.

  On the outer periphery of the third small window 90 in the range from 9 o'clock to 10 o'clock, an airplane-shaped symbol 93 is written. This symbol represents the airplane mode. When aircraft take off and landing, the reception of satellite signals is prohibited by the Aviation Law. The user can stop the reception of the satellite signal of the electronic timepiece 10 by operating the A button 61 and selecting the symbol 93 (in-flight mode) with the hands 91.

  On the outer periphery of the third small window 90 in the range from the 10 o'clock direction to the 12 o'clock direction, a number “1” and a symbol “4+” are written. These numbers and symbols represent satellite signal reception modes. “1” means that the GPS time information is received and the internal time is corrected, and “4+” means that the GPS time information and the orbit information are received, and the internal time and a time zone described later are corrected. . When the user operates the B button 62, the hands 91 indicate “1” or “4+”, and the reception mode of the satellite signal received immediately before by the electronic timepiece 10 is displayed.

  The calendar small window 15 is provided in an opening portion in which the dial 11 is opened in a rectangular shape, and numbers can be visually recognized from the opening portion. This number represents the “day” of the date.

Here, the relationship among Coordinated Universal Time (UTC), time difference, standard time, and time zone will be described.
A time zone is an area that uses a common standard time, and currently there are 40 types of time zones. Each time zone is distinguished by a time difference between standard time and UTC. For example, Japan belongs to a time zone of +9 hours using standard time which is 9 hours ahead of UTC. The standard time used in each time zone can be obtained from UTC and the time difference between UTC.

As described above, the dial 11 is engraved with a scale indicating 60 minutes and seconds, and the dial ring 40 surrounding the outer periphery of the dial 11 has a time difference from UTC along the scale. The time difference information 45 representing “” is represented by numerals and symbols other than numerals. The numeric time difference information 45 is an integer time difference, and the symbol time difference information 45 is displayed by hands 22, 23, 81 indicating that it is a non-integer time difference. The time difference between the internal time and UTC is The time difference information 45 indicated by the pointer 21 can be confirmed by 50 operations.
The electronic timepiece 10 can represent internal time corresponding to up to 60 different time differences by assigning a temporary difference to one scale of 60 scales provided on the dial 11. In the present embodiment, the time difference information 45 of the “UTC” symbol represents the world coordinated time, which is the standard of the time difference, and the time difference information 45 of the “•” symbol represents a time difference other than an integer. May be used to indicate.

  In the present embodiment, the time difference information 45 of the “·” symbol written between the numbers “8” and “9” on the dial ring 40 represents a time difference of +8.75 hours (+8 hours 45 minutes). , Means UTC + 8.75 hours as the standard time zone. Currently, there are 40 types of time zones in the world including this standard time, and the time difference representing the 40 types of time zones is written as time difference information 45 on the dial ring 40 of the electronic timepiece 10. The time zone display is preferably within 60 types. If it exceeds 60 types, the display becomes small and it may be difficult to determine.

  In the bezel 32 provided around the dial ring 40, city information 35 representing the representative city name of the time zone using the standard time corresponding to the time difference of the time difference information 45 written on the dial ring 40, The time difference information 45 is also written. In this embodiment, the city information 35 is described using a three-letter code in which the city name is abbreviated with a three-letter alphabet. “LON” is London, “PAR” is Paris, “CAI” is Cairo, “JED” is Jeddah, “DXB” is Dubai, “KHI” is Karachi, “DEL” is Delhi, “DAC” is Dhaka, “BKK” "Bangkok", "BJS" Beijing, "TYO" Tokyo, "ADL" is Adelaide, "SYD" is Sydney, "NOU" is Nemea, "WLG" is Wellington, "TBU" is Nukualofa, "CXI" is Kirisima Si Island, "MDY" is Midway Island, "HNL" is Honolulu, "ANC" is Anchorage, "LAX" is Los Angeles, "DEN" is Denver, "CHI" is Chicago, "NYC" is New York, "CCS" is Caracas, “SCL” for Santiago, “RIO” for Rio de Janeiro, “FEN” for Fernando de Noronha, “PD "I represent the Azores, respectively. For example, the code “TYO” represents Tokyo, and the number “9” in the time difference information 45 written on the dial ring 40 corresponding to this code makes it easy for Tokyo to use UTC + 9 hours standard time. Can be judged. In addition, the code “CXI” represents the island of Kirisimai, and from the number “14” of the time difference information 45 written along the dial ring 40 corresponding to this code, the island of Kirisimai uses UTC + 14 hours standard time. Can be easily determined. In the present embodiment, the representation of the representative city names corresponding to the time differences of some of the time difference information 45 is omitted in order to limit the display space and improve the visibility. Moreover, the representation method of a representative city name is an example, and may be represented by other methods. The notation of the time difference information 45 and the city information 35 is referred to as a time zone display 46. In this embodiment, a time zone display 46 equal to the number of time zones used all over the world is shown.

<C: Electrical configuration of electronic watch>
Next, the electrical configuration of the electronic timepiece 10 will be described.
FIG. 6 is an electric control block diagram of the electronic timepiece. As shown in FIG. 6, the electronic timepiece 10 includes a control unit 150 having a basic configuration of a CPU (Central Processing Unit) 153, a RAM (Random Access Memory) 154, and a ROM (Read Only Memory) 155, and a receiving unit (GPS module). ) 122, an input device 157, and peripheral devices for the drive mechanism 140. Each of these devices transmits and receives data via the data bus 159. The input device 157 is the crown 50, the A button 61, the B button 62, the C button 63, and the D button 64 shown in FIG. The electronic timepiece 10 includes a rechargeable secondary battery 130 (see FIG. 4) serving as a power source.

  The receiving unit 122 includes an antenna 110, processes satellite signals received via the antenna 110, and acquires GPS mode time information and position information. The antenna 110 transmits a radio wave of a satellite signal transmitted from a plurality of GPS satellites 8 (see FIG. 1) orbiting the earth over a predetermined orbit and passing through the cover glass 33 and the dial ring 40 shown in FIG. Receive.

  Although not shown, the receiving unit 122 is an RF (Radio Frequency) unit that receives a satellite signal transmitted from the GPS satellite 8 (see FIG. 1) and converts it into a digital signal, as in a normal GPS device. GPS time information and position information (positioning information) are acquired from the BB unit (base bump unit) that performs correlation determination of received signals and demodulates the navigation message, and the navigation message (satellite signal) demodulated by the BB unit. And an information acquisition unit for outputting. That is, the receiving unit 122 functions as a receiving unit that receives a satellite signal transmitted from the GPS satellite 8 and outputs GPS time information and position information based on the reception result.

  The RF unit includes a bandpass filter, a PLL circuit, an IF filter, a VCO (Voltage Controlled Oscillator), an ADC (A / D converter), a mixer, an LNA (Low Noise Amplifier), an IF amplifier, and the like. The satellite signal extracted by the bandpass filter is amplified by the LNA, mixed with the VCO signal by the mixer, and down-converted to IF (Intermediate Frequency). The IF mixed by the mixer passes through the IF amplifier and IF filter, and is converted to a digital signal by the ADC.

  The BB unit generates a local code generating unit that generates a local code composed of the same C / A code as that used at the time of transmission by the GPS satellite 8, and a correlation value between the local code and a reception signal output from the RF unit. And a correlation unit to calculate. If the correlation value calculated by the correlation unit is equal to or greater than a predetermined threshold, the C / A code used for the received satellite signal matches the generated local code, and the satellite signal is Can be captured (synchronized). Therefore, the navigation message can be demodulated by correlating the received satellite signal with the local code.

  The information acquisition unit acquires GPS time information and position information from the navigation message demodulated by the BB unit. The navigation message includes preamble data, HOW word TOW (Time of Week, also referred to as “Z count”), and subframe data. There are subframe data from subframe 1 to subframe 5, and each subframe includes, for example, satellite correction data including week number data and satellite health data, and ephemeris (detailed orbit information for each GPS satellite 8). ) And almanac (rough orbit information of all GPS satellites 8). Therefore, the information acquisition unit can acquire GPS time information and navigation information by extracting a predetermined data portion from the received navigation message.

The RAM 154 and the ROM 155 are storage units of the electronic timepiece 10.
The ROM 155 stores programs executed by the CPU 153, time zone information, and the like. The time zone information is data for managing position information (latitude / longitude) of a region (time zone) using a common standard time and a time difference with respect to UTC.
The CPU 153 uses the RAM 154 as a work area and executes various programs, controls, and timings by executing programs stored in the ROM 155. This timing is performed, for example, by counting the number of reference signal pulses from an oscillation circuit (not shown).

  The CPU 153 includes time information calculated from GPS time information and time correction parameters, current position information (latitude and longitude) calculated from GPS time information and orbit information, and a time zone stored in the ROM 155 (storage unit). Correct the internal clock based on the information. The CPU 153 performs control to drive the drive mechanism 140 so that the internal time is displayed. Thereby, the internal time is displayed on the electronic timepiece 10 by the hands 22, 23, 81 (see FIG. 5).

<D: Configuration of antenna fixing member in electronic timepiece>
Next, the configuration of the antenna fixing member that fixes the antenna 110 in the electronic timepiece 10 will be described. In the present embodiment, as an example, a ground plane receiving ring 126 that is a separate member from the ground plane 125 is used as an antenna fixing member.
FIG. 7 is a plan view of the antenna 110, and FIG. 8 is a bottom view of the antenna 110. As shown in FIGS. 7 and 8, the antenna 110 according to the present embodiment is formed in a ring shape, and a plurality of notches 111 are provided on the inner periphery of the antenna 110. A first antenna pattern 112 is formed on the upper surface of the antenna 110. The first antenna pattern 112 is formed by performing plating or paste printing using a metal or other conductive material. As shown in FIG. 7, the first antenna pattern 112 has a notch 112a and is formed in a C shape with a part of the ring cut out.
A second antenna pattern 113 is formed on the inner peripheral side surface of the antenna 110. Similar to the first antenna pattern 112, the second antenna pattern 113 is formed by performing plating, paste printing, or the like using a metal or other conductive material. The second antenna pattern 113 is an arc-shaped element as shown in FIG. 7, and is formed so as to maintain a certain distance from the first antenna pattern 112. A power feeding plate 114 is disposed at one end of the second antenna pattern 113 so as to be in contact with the end, and the power feeding plate 114 has a length reaching the bottom surface side of the antenna 110 as shown in FIG. It is formed. As will be described later, the power feeding plate 114 is in contact with the antenna connection pin on the bottom surface side of the antenna 110. Therefore, the end portion of the second antenna pattern 113 in contact with the power feeding plate 114 is a power feeding position where power feeding is performed via the antenna connection pin and the power feeding plate 114. From the feeding position, it is necessary to secure the second antenna pattern 113 by a predetermined length on the left rotation direction side shown in FIG. 7, and the notch 111 cannot be formed in a region corresponding to the predetermined length. . In the present embodiment, since the second antenna pattern 113 is secured by a predetermined length on the left rotation direction side from the power feeding position, radio waves can be received satisfactorily.

FIG. 9 is an exploded perspective view showing the antenna 110, the ground plane 125, and the ground plane receiving ring 126. As shown in FIGS. 7 to 9, notches 110a are formed at three locations on the outer periphery of the antenna 110, and flanges 110b are provided on the notches 110a. Positioning of the antenna 110 in the height direction with respect to the ground plane receiving ring 126 is performed by engaging the flange portion 110b with a hook portion 126b of the ground plane receiving ring 126 described later.
As shown in FIGS. 8 and 9, six notches 110 c are formed from the bottom surface of the antenna 110 to the side surface close to the bottom surface. The notch portion 110c and the convex portion 126a formed on the base plate receiving ring 126 as shown in FIG. 9 engage with each other, whereby the antenna 110 is positioned in the plane direction with respect to the base plate receiving ring 126.

  As shown in FIG. 9, six flanges 125 a are provided on the outer periphery of the base plate 125, and the base plate receiving part 126 f of the base plate receiving ring 126 is engaged with the base plate receiving ring 126. Positioning in the upward direction with respect to the main plate 125 is performed.

  FIG. 10 is a plan view showing the main plate receiving ring 126. As shown in FIGS. 9 and 10, the ground plane support ring 126 includes a convex portion 126 a for positioning the antenna 110 in the plane direction, an antenna hook portion 126 c for positioning the antenna 110 in the height direction, and the antenna 110. Urging portions 126d and 126e for urging the base plate 125 in the height direction, a base plate receiving portion 126f that engages with the flange 125a of the base plate 125, and an inner peripheral convex shape having a convex arc surface provided on the inner periphery of the base plate receiving ring 126 126 g of parts, the outer peripheral convex part 126h which has the convex circular arc surface provided in the outer periphery of the baseplate receiving ring 126, and the case hole 127 in which the case 116 of the antenna connection pin 115 is inserted.

11 is a developed perspective view showing a state in which the ground plate receiving ring 126 is fitted to the ground plate 125, FIG. 12 is a plan view showing a state in which the ground plate receiving ring 126 is fitted to the ground plate 125, and FIG. 13 is a plan view showing the ground plate 125 and the ground plate receiving ring. 126 and FIG. 15 are partially enlarged perspective views showing the periphery of the contact portion between the main plate 125 and the main plate receiving ring 126.
As shown in FIGS. 11 and 12, by engaging the flange 125 a of the ground plate 125 with the ground plate receiving portion 126 f of the ground plate receiving ring 126, the upward positioning (height direction) of the ground plate receiving ring 126 with respect to the ground plate 125 is performed. As a result, the upper surface of the flange 125a and the upper surface of the main plate receiving ring 126 are aligned, and the antenna 110 can be placed on these surfaces.
Further, as shown in FIGS. 13 to 15, when the ground plate receiving ring 126 is fitted to the ground plate 125, the inner peripheral convex portion 126 g of the state ground plate receiving ring 126 comes into contact with the outer periphery of the ground plate 125. Positioning of 126 in the plane direction (circumferential direction) with respect to the base plate 125 is performed.
Accordingly, the ground plane receiving portion 126f of the ground plane receiving ring 126 functions as a fourth positioning portion for positioning the ground plane in the height direction, and the inner peripheral convex portion 126g of the ground plane receiving ring 126 is a third positioning for positioning the ground plane in the circumferential direction. It functions as a part.

16 is a developed perspective view showing a state in which the case 116 in which the antenna connection pin 115 is contained is accommodated in the ground plate 125 in which the ground plate receiving ring 126 is fitted. FIG. 17 is a perspective view of the ground plate receiving ring 126 and the ground plate in the state shown in FIG. FIG.
As shown in FIGS. 16 and 17, the top of the antenna connection pin 115 is located on the installation surface of the antenna 110 in the ground plane receiving ring 126, and the antenna connection pin 115 is installed by installing the antenna 110 on the installation surface. And the power supply plate 114 come into contact with each other.

18 is an exploded perspective view showing a state in which the antenna 110 is installed on the installation surface of the antenna 110 in the ground plane receiving ring 126 from the state shown in FIG. 16, and FIG. 19 is a ground plane receiving ring 126 and ground plane 125 in the state shown in FIG. FIG. 20 and FIG. 21 are enlarged perspective views showing the periphery of the engaging portion between the antenna 110 and the ground plane receiving ring 126. FIG.
As shown in FIGS. 18, 20, and 21, the notch 110 c on the outer periphery of the antenna 110 engages with the convex 126 a of the ground plate receiving ring 126, so that the plane of the antenna 110 with respect to the ground plate receiving ring 126 is engaged. Positioning in the direction (circumferential direction) is performed.
Further, as shown in FIGS. 18 to 20, the flange 110b provided in the notch 110a on the outer periphery of the antenna 110 and the antenna hook 126c of the ground plate receiving ring 126 are engaged with each other. The downward positioning with respect to the main plate receiving ring 126 is performed.
Therefore, the convex portion 126a of the ground plane receiving ring 126 functions as a first positioning portion or positioning convex portion for positioning the antenna in the circumferential direction, and the antenna hook portion 126c of the ground plane receiving ring 126 positions the antenna in the height direction. It functions as a second positioning part or a positioning hook part. Further, the flange portion 110b functions as a stepped portion formed on the outer peripheral surface of the antenna, and the notch portion 110c functions as a bottom surface concave portion formed at a plurality of locations on the bottom surface of the antenna.

Further, as shown in FIG. 21, the antenna 110 is biased upward by the biasing portion 126 d of the antenna 110. The base plate receiving ring 126 is formed of a member softer than the base plate 125, for example, POM (polyoxymethylene), and the urging portion 126d is formed as a cantilever spring as shown in FIG. . The position of the upper end portion 126d-1 of the urging portion 126d is set so as to be positioned above the bottom surface of the antenna 110 when the antenna 110 is installed on the installation surface of the main plate receiving ring 126. Therefore, as shown in FIG. 22A, when the antenna 110 is installed on the installation surface of the ground plane support ring 126, the urging portion 126d is pressed downward by the antenna 110, and due to the elastic force of the urging portion 126d, The antenna 110 is biased upward.
Moreover, the urging | biasing part 126e shown by the upper part of the baseplate receiving ring 126 in FIG. 17 is formed as an urging | biasing part by which both ends were supported instead of a cantilever spring. Also in this case, the urging portion 126e urges the antenna 110 upward by the elastic force of the urging portion 126e.
Therefore, the urging portion 126e functions as a spring portion that contacts the bottom surface of the antenna and urges the antenna in the height direction.
As described above, the antenna 110 is restricted from moving in the upward direction by the antenna hook portion 126c of the ground plate receiving ring 126 and is urged upward by the urging portions 126d and 126e of the ground plate receiving ring 126. Positioning in the vertical direction with respect to the ring 126, that is, in the height direction of the antenna 110 is reliably performed.

FIG. 23 is a partially enlarged cross-sectional view of a portion where the antenna connection pin 115 is installed. As shown in FIG. 23, the antenna connection pin 115 and the case 116 are urged upward by a spring 115a. The upper end position of the antenna connection pin 115 is set so as to be positioned above the bottom surface of the antenna 110 when the antenna 110 is installed on the installation surface of the ground plane receiving ring 126. Therefore, as shown in FIG. 23, when the antenna 110 is installed on the installation surface of the ground plane support ring 126, the antenna connection pin 115 is pressed downward by the antenna 110, and the antenna 110 is moved upward by the elastic force of the spring 115a. Energize to. As a result, the antenna connection pin 115 reliably contacts the power feeding plate 114 and urges the antenna 110 upward in combination with the urging portions 126d and 126e described above. Therefore, the antenna 110 is reliably positioned in the vertical direction with respect to 126, that is, in the height direction of the antenna 110.
Therefore, the antenna connection pin 115 is urged by the urging member to contact the antenna and functions as a feeding member that feeds power to the antenna.

  In the present embodiment, as shown in FIG. 17, the antenna hook portions 126 c of the ground plane receiving ring 126 are arranged at substantially equal intervals at an angle of about 120 degrees in the circumferential direction of the ground plane receiving ring 126. In addition, the urging portion 126d and the urging portion 126e are disposed so as to be at a substantially intermediate position of the antenna hook portion 126c in the circumferential direction of the main plate receiving ring 126. Therefore, the location where the antenna 110 is pressed downward and the location where the antenna 110 is biased upward are arranged in a well-balanced manner, and the antenna 110 can be stably positioned in the height direction.

When the solar panel 135 and the dial plate 11 are attached to the main plate 125 and assembled as a movement from the state shown in FIG. 18, when the movement is inserted from the opening on the back side of the exterior case 30, for example, as shown in FIG. As shown in FIG. 4, the upper surface 126j of the base plate receiving ring 126 positioned further on the outer periphery of the base plate engages with the flange 31a of the case 31 of the outer case 30 so that the entire movement is positioned in the vertical direction.
Further, as shown in FIGS. 18 to 21, the outer periphery of the main plate receiving ring 126 is provided with a plurality of outer peripheral convex portions 126 h having convex arcuate surfaces. Therefore, when the movement is inserted from the opening on the back surface side of the outer case 30, the outer peripheral convex portion 126h provided on the outer periphery of the base plate receiving ring 126 hits the inner periphery of the case 31 of the outer case 30, and the planar direction of the entire movement ( Positioning in the circumferential direction is performed.
Therefore, the outer peripheral convex portion 126h of the ground plane receiving ring 126 functions as a fifth positioning portion for positioning the antenna fixing member and the ground plane in the circumferential direction with respect to the exterior case, and the upper surface 126j of the ground plane receiving ring 126 is the antenna fixing member. And it functions as a 6th positioning part which positions a ground plane with respect to an exterior case in a height direction.
As described above, the antenna 110 is reliably positioned in the vertical direction (height direction) and the planar direction with respect to the exterior case 30 as well.

The impact when the electronic timepiece 10 is dropped is also transmitted to the antenna 110, but the impact in the planar direction at this time is dispersed by the outer peripheral convex portions 126 h formed at a plurality of locations on the outer periphery of the main plate receiving ring 126. Further, by forming the outer peripheral convex portion 126h at a plurality of locations, it is possible to deal with an impact from any direction.
For impacts in the vertical direction (perpendicular to the plane direction), the biasing portions 126d and 126e of the ground plane receiving ring 126 and the antenna connection pin 115 for biasing the antenna 110, and the ground plane receiving ring 126 having elasticity are also used. Absorbed by the antenna hook 126c.

  As described above, in the present embodiment, the ground plane receiving ring 126 that is a single member is used as the antenna fixing member, and the antenna 110 is planarly and in the height direction (direction perpendicular to the planar direction) by the ground plane receiving ring 126. Therefore, the positioning can be performed with higher accuracy than when a plurality of members are used. Further, the number of assembling steps for the members can be reduced as compared with the case where a plurality of members are used.

<Modification>
The present invention is not limited to the above-described embodiments, and various modifications as described below are possible, for example. Moreover, the aspect of the deformation | transformation described below can also combine suitably arbitrarily selected 1 or several.

(Modification 1)
FIG. 24 is a schematic diagram illustrating an appearance of an electronic timepiece according to a modification.
Although the electronic timepiece 10 has been described as having a chronograph function as shown in FIG. 5 in the above embodiment, the present invention is not limited to this configuration.
Hereinafter, an electronic timepiece 200 according to a modification will be described. In addition, about the component same as embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

As shown in FIG. 24, on the outer periphery of the dial 12, a scale that divides the outer periphery into 60 divisions is written. Using this scale, the hands 22, 23 and 24 display the time of the internal clock.
The dial 12 is provided with a rectangular calendar window 16 having a good visibility and a direction of 3 o'clock from the center. The calendar small window 16 is provided by opening the dial 12 so that numbers can be visually recognized from the opening. This number represents the “day” of the date.

The dial 12 is engraved with a scale for displaying 60 divided minutes and seconds, and an outer peripheral portion provided around the dial 12 is used around the scale 40 worldwide. A type of time zone display 46 is shown. The time zone of the internal time displayed by the hands 22, 23, 24 can be confirmed by the time zone display 46 indicated by the hands 24 by operating the crown 50.

  As described above, also in the electronic timepiece 200 according to the present modification example, the antenna 110 is positioned in the plane direction and the height direction (direction perpendicular to the plane direction) by the ground plane support ring 126. Positioning can be performed with higher accuracy than in the case of using. Further, the number of assembling steps for the members can be reduced as compared with the case where a plurality of members are used.

(Modification 2)
In the embodiment described above, the main plate 125 and the main plate receiving ring 126 are configured as separate members. However, the present invention is not limited to this configuration, and the main plate 125 and the main plate receiving ring 126 are configured integrally. May be. In this case as well, positioning can be performed with higher accuracy than when a plurality of members are used. Further, the number of assembling steps for the members can be reduced as compared with the case where a plurality of members are used.

(Modification 3)
In the embodiment described above, the urging portion 126d of the cantilever spring and the urging portion 126e of both end support are mixed, but the present invention is not limited to this configuration. For example, all the urging parts may be cantilever urging parts 126d, or all the urging parts may be both end supporting urging parts 126e.
In addition to the urging portions 126d and 126e, the number and positions of the inner convex portion 126g, the outer convex portion 126h, the antenna hook portion 126c, and the cutout portions 110a and 110c of the antenna 110 are as follows. It can be changed as appropriate.

(Modification 4)
In the above-described embodiments and modifications, the present invention is applied to an analog electronic timepiece. However, the present invention can be applied to a digital electronic timepiece, a quartz watch, a table clock, a wall clock, or the like.

DESCRIPTION OF SYMBOLS 10 ... Electronic timepiece, 11 ... Dial, 12 ... Dial, 30 ... Exterior case, 31 ... Case, 31a ... Spear, 40 ... Dial ring, 110 ... Antenna, 111 ... Notch, 112 ... First antenna pattern, 113 ... Second antenna pattern, 114 ... Feeding plate, 115 ... Antenna connection pin, 116 ... Case, 125 ... Ground plate, 125a ... Bag, 126 ... Ground plate receiving ring, 126a ... Convex portion, 126c ... Antenna hook portion, 126d ... Urging part, 126e ... urging part, 126f ... ground plate receiving part, 126g ... inner peripheral convex part, 126h ... outer peripheral convex part, 126j ... flat part, 200 ... electronic timepiece.

Claims (8)

A ring antenna,
An antenna fixing member for fixing the antenna;
In the antenna fixing member,
A first positioning unit that positions the antenna in the circumferential direction; and a positioning unit that includes a second positioning unit that positions the antenna in the height direction;
Both a biasing portion that biases the antenna in the height direction is formed,
A watch characterized by that. The antenna includes a bottom recess formed at a plurality of locations on the bottom, and a step formed on the outer peripheral surface.
The first positioning part includes a positioning convex part that engages with the bottom concave part to position the antenna in the circumferential direction,
The second positioning portion includes a positioning hook portion that engages with the stepped portion to position the antenna in a height direction,
The biasing portion includes a spring portion that contacts the bottom surface of the antenna and biases the antenna in the height direction.
The timepiece according to claim 1. The second positioning portion and the biasing portion are formed at a plurality of locations in the circumferential direction,
The urging portion is formed at a location between the two second positioning portions in the circumferential direction.
The timepiece according to claim 1, wherein the timepiece is a timepiece. The urging unit includes a power supply member that is urged by a urging member to contact the antenna and to supply power to the antenna.
The timepiece according to any one of claims 1 to 3, wherein the timepiece is characterized in that The antenna fixing member is a member that is integral with or separate from the ground plane,
The timepiece according to any one of claims 1 to 4, wherein the timepiece is characterized in that The antenna fixing member is a separate member from the ground plane,
It is formed of a member having higher elasticity than the ground plate,
The timepiece according to claim 5. The antenna fixing member includes a third positioning portion that positions the base plate in the circumferential direction, and a fourth positioning portion that positions the base plate in the height direction.
The timepiece according to claim 5 or 6, characterized in that The antenna fixing member includes a fifth positioning portion for positioning the antenna fixing member and the ground plane in a circumferential direction with respect to the exterior case, and positioning the antenna fixing member and the ground plane in a height direction with respect to the exterior case. A sixth positioning part
The timepiece according to any one of claims 5 to 7, wherein the timepiece is characterized in that