WO2006022433A1 - 電子機器 - Google Patents
電子機器 Download PDFInfo
- Publication number
- WO2006022433A1 WO2006022433A1 PCT/JP2005/015961 JP2005015961W WO2006022433A1 WO 2006022433 A1 WO2006022433 A1 WO 2006022433A1 JP 2005015961 W JP2005015961 W JP 2005015961W WO 2006022433 A1 WO2006022433 A1 WO 2006022433A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- metal
- electronic device
- back cover
- joint
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R60/00—Constructional details
- G04R60/06—Antennas attached to or integrated in clock or watch bodies
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G21/00—Input or output devices integrated in time-pieces
- G04G21/04—Input or output devices integrated in time-pieces using radio waves
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R60/00—Constructional details
- G04R60/06—Antennas attached to or integrated in clock or watch bodies
- G04R60/10—Antennas attached to or integrated in clock or watch bodies inside cases
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R60/00—Constructional details
- G04R60/06—Antennas attached to or integrated in clock or watch bodies
- G04R60/10—Antennas attached to or integrated in clock or watch bodies inside cases
- G04R60/12—Antennas attached to or integrated in clock or watch bodies inside cases inside metal cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
- H01Q7/08—Ferrite rod or like elongated core
Definitions
- the present invention receives a radio wave that transmits predetermined information including time information, displays or notifies the predetermined information, displays the time information at the same time, and corrects the time information to accurate time information.
- the present invention relates to an electronic device having a function, and particularly to an electronic device aimed at improving radio wave reception performance when a metal exterior such as a metal case is used.
- the present invention relates to an electronic device configured so as not to degrade the radio wave reception performance of the antenna unit even when the resonant antenna unit is disposed inside the metal exterior.
- the display format of the time is typically represented by an analog method that displays the time using two or three hands, and a liquid crystal LED. It is well known that it can be broadly divided into a digital system that displays time using an electro-optical display device, or a combination system that combines the two.
- analog-type watches for example, the presence or absence of a second hand or calendar, as well as the subordinate timing functions represented by the timer function, chronograph function, alarm function, moon age display function, etc. It is also well known that users can choose whether or not to suit their preferences.
- radio-controlled clocks have become widespread.
- the radio-controlled timepiece can automatically correct the time lag of the clock counter's internal counter by receiving standard time radio waves, so if you are in an environment that can receive radio waves, It is possible to bring the indication error of the limit as close to zero as possible.
- Standard time radio waves are determined in frequency and data format depending on the transmission equipment, and are currently being transmitted in Germany and the United States in addition to Japan. Radio correction watches are widely commercialized in these countries. .
- radio waves currently used by radio-controlled watches use long waves because they can cover a wide area with few transmission facilities. Note that two stations with different frequencies, 40 kHz and 60 kHz, are currently in operation in order to avoid Japanese interference in the border zone.
- a radio-controlled timepiece that receives a standard radio wave, that is, a standard radio wave (carrier wave) that includes time information, and obtains an accurate time by extracting the time information from this radio wave.
- a radio-controlled clock that can do this is already known.
- the frequency of radio waves including this time information varies from country to country.For example, in Japan, the standard radio waves of 40 kHz and 60 kHz are under the jurisdiction of the Ministry of Internal Affairs and Communications and the Postal Service. Is being sent.
- Fig. 2 is a block diagram showing an outline of functions in one specific example of such a radio-controlled timepiece.
- This radio-controlled timepiece is composed of an antenna 1, a radio-controlled timepiece receiver 2, CPU 3, a display drive unit 4, an input device 5 and the like.
- hour, minute and second pointers or a liquid crystal display unit is included.
- antenna 1 receives radio waves including time information.
- the radio-controlled timepiece receiver 2 amplifies and detects the radio wave received by the antenna 1, extracts time information from the radio wave, and outputs it.
- CPU 3 outputs current time data based on the time information output from radio wave correction clock receiver 2.
- Display drive unit 4 is C Based on the current time data output from PU 3, the current time is displayed on the display unit.
- the input device 5 is used, for example, when inputting operation information such as reset to the CPU 3.
- the time information (time code) contained in the radio wave is a pulse signal with a period of 60 seconds, which varies from country to country, but in Japan, it is 2 0 0, 5 0 0, 8
- One pulse with a width of 0 msec is on board. By combining these pulses, time information can be obtained in 60 seconds.
- CP U 3 obtains time information (current time) by reading the pulse width of the pulse per second from the received pulse signal.
- the CPU corrects the display time on the display unit via the display drive unit 4 based on the acquired time information. Therefore, the radio-controlled timepiece can always display an accurate time by correcting the display time at predetermined intervals based on the received time information.
- a radio wave correction watch an antenna, a radio wave correction clock receiver, a CPU, a display drive unit, and a display unit are already provided with a wristwatch power housed in a case that is an antenna housing.
- non-conductive materials such as synthetic resin and ceramic have been mainly used for the antenna to receive radio waves. That is, if the antenna is housed inside a case made of a conductive material such as metal, the magnetic flux generated in the vicinity of the antenna is absorbed by the conductive material and the resonance phenomenon is hindered, so the reception function of the antenna is significantly reduced. It is.
- Fig. 3 shows an outline of the configuration of another specific example of a conventional analog radio-controlled timepiece.
- 1 0 0 is an antenna unit that receives radio waves
- 1 0 2 is a watch movement that drives a pointer
- 1 0 3 is a watch movement 1 0 2 and antenna unit 1 0 0.
- 1 0 4 is a back cover
- 1 0 5 is a dial with a scale for displaying time
- 1 0 6 is glass.
- the antenna section 100 is surrounded by an antenna core section 1 0 1 a having a high magnetic permeability represented by a ferrite alloy and an antenna core section 1 0 1 a. It is composed of a wound antenna coil part 1 0 1 b, and a watch movement 1 is placed inside a closed space 1 0 7 formed by an exterior case 1 0 3, a back cover 1 0 4, and a dial 1 0 5. 0 2 Stored together.
- the clock movement 100 has a time counter in addition to the time information in its circuit system.
- the watch movement 1 0 2 compares the time measured by the time counter with the filtered time information. If the results are different from each other, the watch movement instruction (not shown) is used to correct the pointer. Then, the pointer is corrected to the time information from the standard time signal by driving the motor. As a result, when the standard time radio wave is received, the indicated time of the clock is automatically corrected to the correct time.
- the antenna unit 100 and the watch movement 10 2 are shown in the closed space 1 0 7 surrounded by the exterior case 1 0 3, the back cover 1 0 4, and the dial 1 0 5.
- the antenna unit 10 0 0 is housed in the closed space 1 0 7.
- the outer case 103 and the back cover 104 are made of a material free from eddy current loss represented by a polymer resin.
- the radio wave 10 9 reaches the antenna unit 100 0 stored in the cage of the closed space 10 7 without being attenuated by the external case 10 3 and the back cover 10 4. Is possible.
- the outer case 10 3 is molded with a polymer resin, it is much inferior in rigidity compared to metals generally used in ordinary watches such as stainless steel. For this reason, in order to prevent damage to the watch due to impacts such as dropping during normal use, the thickness of the outer case 10 3 and the back cover 10 4 is thicker than when molded with metal. There is a problem that the clock itself becomes large as a result.
- the exterior case 10 3 and the back cover 10 4 are molded from a polymer resin, there is a disadvantage that the texture is greatly inferior compared to that made of metal. Although it is possible to give a metallic luster by applying surface treatment to a polymer resin, it cannot be denied that it is inferior in terms of gloss and texture compared to metal.
- the dial plate 105 that directly touches the user's eyes that is, the bezel 1 1 1 1 is formed of metal, and the side case 1 0 3 and the back cover are formed.
- the dial plate 105 that directly touches the user's eyes that is, the bezel 1 1 1 1 is formed of metal, and the side case 1 0 3 and the back cover are formed.
- the total thickness of the finished watch will be larger than that of a watch with a normal metal exterior.
- the texture of the product is inferior.
- the back cover 10 4 is tightened to cause plastic deformation, and the body part as the back cover 10 4 and the outer case 10 3 is joined.
- the lineup of highly waterproof diver watches cannot be arranged as a product group.
- non-metallic materials other than polymer resin such as ceramics with a case and back cover formed in practical use
- ceramics are used to maintain rigidity. Since it is necessary to sinter, processing accuracy after sintering cannot be obtained, or if it is processed in a complicated shape, it cannot be polished, so there will be a great restriction on the exterior design There is a problem. In addition, since ceramics is a brittle material, cracking and chipping against impacts become a problem.
- Figure 4 shows a conventional example of a radio-controlled watch using a metal case.
- Fig. 4 shows a plan view of the conventional example.
- the same components as those in Fig. 3 are given the same numbers, and explanations thereof are omitted.
- the outer case 10 3 and the back cover 10 4 are made of metal and overlapped with the metal outer case 1 0 3 and the back cover 1 0 4 in a plane.
- Antenna part 1 1 0 made of high molecular resin is fixed to the part that does not become the antenna part 1 sealed inside Products with a structure in which 0 0 is joined to the watch movement 1 0 2 are also in practical use.
- the antenna unit 100 is arranged outside the closed space 10 07 formed by the outer case 10 0 3, the back cover 10 4, and the dial plate 10 5.
- the incidence of the radio wave 10 9 on 0 is not affected by the metal member represented by the exterior case 103, and the radio wave 10 9 can be received.
- the shape of the finished watch becomes a very special shape, and there is a problem that it becomes a great constraint on the design of the finished watch.
- the exterior case 10 3 and the polymer case 11 10 made of polymer resin with the antenna enclosed are very different in texture, making it difficult to process on the design and not accepting general users. There is also the problem of having to be a design.
- Fig. 5 is a cross-sectional view showing an example of the structure of a radio-controlled timepiece using metal as part of the case.
- the wristwatch case 10 is generally composed of a case 1 1, a back cover 1 2, and a windshield 1 3.
- a watch movement 14 is arranged by a known means inside a case to which a band (not shown) is connected.
- a dial 15 and a hand 16, which are time display parts are arranged by known means.
- a bar antenna 17 that is a magnetic long-wave antenna is arranged below the watch movement 14 and above the back cover 12.
- the bar antenna 17 is composed of a magnetic core member 18 and a coinole 20 wound around the magnetic core member 18, and is fixed to the upper surface of a synthetic resin holding member.
- the watch movement 14 includes the above-described radio wave correction watch receiver, C PU, and a display drive unit, and is electrically connected to the bar antenna 17 by the conductor 2 1. Therefore, based on the standard radio wave received by the bar antenna 17, the CPU of the watch movement 14 operates the gear mechanism (not shown) in the display drive unit to Drive to always correct the position of.
- the vertical direction indicates the vertical direction in Fig. 5.
- Monthly 11 is a conductive material that is not hollow, that is, solid metal, for example, solid stainless steel. It is fixed to the uppermost part of the cylinder 1 1 by a known means such as a windshield made of glass which is a non-conductive material.
- the dial plate 15 is made of a nonconductive material such as synthetic resin or ceramic.
- the back cover 1 2 is made of stainless steel fixed to the body 1 1
- An annular edge frame 2 2 made of glass and glass 2 3 fixed in the edge frame.
- the lower limit of the input signal of the receiver circuit or the receiver IC is currently about a signal amplitude of 1 / z V, which is received in order to obtain practical reception performance.
- a signal antenna an output with a signal amplitude of about 1 ⁇ V must be obtained at an electric field strength (intensity of radio waves) of 40 to 50 dB / iV / m.
- a bar antenna in which a conducting wire is wound around a magnetic core is generally used because the wavelength of radio waves is long.
- the output of the receiving antenna is roughly proportional to the size of the receiving antenna, so it cannot be so small to obtain practical receiving performance, and it is as small as a wristwatch. In this case, reception performance and location become a problem.
- the output of the receiving antenna will drop drastically when stored in a metal outer case.
- a wristwatch in order to use radio waves, a wristwatch requires a component configuration or design that is completely different from the conventional watch component configuration and design, as well as considerations for not hindering the reception performance. .
- small size, thinness, portability, freedom of design, and texture (high quality) are important issues, and antenna built-in type and metal exterior cases are desired.
- the method of mounting or mounting the antenna is mainly used.
- the receiving antenna When the case is made of metal, the receiving antenna is generally installed on the exterior.
- the case of the receiving antenna is made of a non-metal such as plastic so as not to deteriorate the receiving performance. Therefore, the receiving antenna case has a large projecting shape, which is small and thin, impairing portability and freeing the design. The degree is severely impaired.
- the strength of the watch is low because the strength of the material is small and the strength of the material used is ceramic or plastic as the material of the watch exterior (back cover 'case). As the thickness increases, storage capacity and portability are impaired, and design constraints also increase.
- a metal antenna is arranged in a leather band of a watch.
- an antenna with a coiled core is placed between the dial and the windshield to prevent radio waves from being disturbed.
- a watch that has a unique design at the same time as it is separated from the case body, or a wristwatch that has an antenna attached to the side of the watch case is disclosed in International Publication WO 9 5/2 7 9 2 8 Has been.
- the antenna since the antenna is built in the band, it must be connected to the main body of the electronic device, so that the junction between the two has sufficient flexibility. I can't do this. .
- the thickness or size of the watch increases as the antenna is separated from the metal part of the watch body. There is a problem that it is closed or is subject to design constraints.
- the coil is disposed in the recessed portion provided in the peripheral portion of the circuit board, and at the same time, the core is disposed in a curved shape along the circumferential direction of the circuit board.
- the manufacturing process becomes complicated and the assembly process of the manufacturing process becomes complicated.
- Japanese Patent Application Laid-Open No. 2 0 0 1-3 3 5 71 or Japanese Patent Application Laid-Open No. 2 0 0 1-3 0 5 2 4 or the like discloses that the windshield and back cover of the wristwatch are made of glass or A wristwatch made of a non-metallic material such as ceramic is shown in the middle, using a conventional metal material so that enough radio waves can reach the antenna. .
- Japanese Patent Application Laid-Open No. 2 0 0 1 1 2 0 8 8 75 discloses a technique relating to an identification tag for a wristwatch, and its basic technical configuration is applied to a ski resort or the like.
- an identification tag is provided in the user's wristwatch, and information is exchanged with the identification means provided at the lift boarding gate for correct access.
- a system for identifying whether or not a passenger is a rule is disclosed.
- the basic technical idea of the technical configuration of the publication is that a strong high-frequency radio wave is transmitted from the identification means and the wristwatch having the identification tag is brought close to the IC circuit in the wristwatch. When activated, the identification tag information is read by the identification means.
- this publication suggests that even if the watch has a metal exterior, the antenna provided inside it operates to exchange the information described above, but the technical idea that is clearly different from the present application is that Providing identification means to transmit strong frequency radio waves, It is necessary to place a watch with an identification tag close to the identification means, and the antenna provided on the watchcase is basically a bar antenna so that high-frequency radio waves transmitted from the identification device can be received sufficiently. However, since it is necessary to make it as thin and large as possible in the watch, it is necessary to use a thin and flat rectangular antenna. This is clearly different from what defines a specific relationship with the exterior.
- Japanese Utility Model Publication No. 57-13-14102 describes a wristwatch provided with an antenna using a ring-shaped magnetic bar made of a C-shaped ferromagnetic material sandwiching a conductor portion.
- this known example relates to the antenna of a wristwatch with a radio, and the antenna is merely disposed outside the wristwatch, and is not provided inside the metal exterior as in the present invention. Is clear.
- Japanese Patent Laid-Open No. 6-2 15 9 4 2 describes that the core of the inductor is composed of another member, but the subject is related to the chip inductor.
- the antenna of the wristwatch as in the invention is obviously different in the technical field, and the power purpose and technical configuration are also substantially different from those of the present application.
- Japanese Patent Application Laid-Open No. 11 1 7 4 1 3 8 discloses a transformer in which a dust core is combined with a U-shaped member and an I-shaped member, and a secondary coil is wound around the U-shaped member.
- the object is to obtain a high-voltage transformer, which is clearly different from the technical field of a watch antenna like the present invention.
- the technical configuration is also substantially different from the present application.
- Japanese Utility Model Publication No. 6 1-2 0 3 5 1 6 discloses a structure in which the butt surface of the core is inclined from the direction perpendicular to the magnetic path, but the object is an inductance element. This is clearly different from the technical field of a wristwatch antenna such as the present invention, and the power purpose and technical configuration are substantially different from those of the present application.
- Japanese Patent Laid-Open No. 2 0 0 2 — 1 8 4 6 3 7 there is a description of a content such as changing the area of the coil core gap to a taper shape.
- the publicly known example relates to a high-voltage transformer, and the power, purpose and technical configuration of a wristwatch antenna are substantially different from those of the present application.
- the content that the core of the inductor is constituted by a separate member is described. Although it is related to high-voltage transformers and chip inductors, it is clearly different from the antenna of a wristwatch, and its power, purpose, and technical configuration are substantially different from those of this application. It is.
- the output of the receiving antenna is based on the fact that it is extremely lowered when it is housed in a metal exterior.
- the purpose is to reduce the decline and use the high-quality metal side.
- the conventional example described above has a problem that the thickness of the watch increases because of the use of glass or ceramics.
- the use of a large and highly sensitive antenna structure or the use of the antenna structure only in areas where the electric field strength of the radio wave is strong may impair the convenience of the radio wave correction clock and reduce the design.
- the manufacturing cost of the antenna structure including the design of the antenna is inevitably high.
- the receiving antenna is built in the metal side, the output of the antenna is reduced and the receiving performance is reduced. .
- Japanese Patent Application No. 2 0 0 2-2 9 7 0 9 5 Japanese Patent Laid-Open No. 2 0 0 4 — 1 4 4 4 8 . If an antenna is placed inside a watch case with a metal case or metal lid, the Q value will decrease. As a result, it has been found that there is a problem that the output from the antenna structure is lowered and reception performance is remarkably deteriorated, and the antenna for solving the problem is made a special structure.
- the present invention has been made in view of the above-described problems of the prior art, and even if a normal metal case is used, there is no problem on the portable, and there is no problem.
- To provide electronic equipment that can receive high-quality sound improve the appearance quality with a stable waterproof quality and a high-class feeling, and can expand the same design as a general watch. It is in.
- the present invention solves the above-described conventional problems, and provides an electronic device having a metal exterior part with a built-in antenna part that has good radio wave reception performance and is not subject to material restrictions or design restrictions. It is intended to provide.
- the present invention when the present invention is applied to a radio-controlled timepiece which is one of the specific examples of the electronic device, in addition to the above-mentioned purpose, the thickness of the wristwatch is prevented from becoming bulky and the feeling of wearing on the arm
- the purpose is to provide a radio-controlled watch that is also good.
- the present invention like a conventional watch, uses a polymer resin or ceramic watch case, such as titanium or stainless steel, while using a relatively highly permeable metal exterior and metal back cover. This is to provide a small and thin radio-controlled watch that maintains the same reception performance as the case and back cover.
- the present invention employs a basic technical configuration as shown below.
- the basic aspects of the present invention include at least the antenna unit, the information processing apparatus for processing information captured by the antenna unit, and the antenna.
- An electronic device comprising a metal part and a metal exterior part capable of accommodating the information processing device therein, wherein the antenna part is connected to the metal exterior part.
- An electronic device configured to receive and resonate with magnetic flux from the outside through the metal exterior part, and the metal exterior part includes at least a metal body member and a metal back cover And a joining portion between the metal barrel member and the metal back cover member, at least a portion facing the substantially central portion of the antenna portion or the portion thereof.
- the electronic device is characterized in that a joint fixing portion for joining and fixing the body member and the back cover member is not provided in the vicinity.
- the present inventors in an electronic apparatus including a radio-controlled timepiece in which an antenna portion is built in a metal exterior case, include a back cover member and a body member that constitute the metal exterior portion.
- the abutting portion where the and abut each other is spot-bonded and fixed using a plurality of joining members, the gain of the antenna portion changes depending on the position of the joining and fixing portion. This is what I learned.
- the electronic device according to the present invention employs the above-described technical configuration, by specifying the position of the joint fixing portion, the gain of the antenna portion disposed in the conventional metal exterior portion is determined. As a result, the gain can be further improved, and it has become possible to manufacture electronic devices that can be made lighter, smaller, and thinner.
- FIG. 1 is a diagram showing a configuration of a specific example of an electronic apparatus according to the present invention.
- FIG. 2 is a diagram for explaining the outline of the configuration of the radio-controlled timepiece as a specific example of the electronic apparatus according to the invention.
- FIG. 3 is a cross-sectional view schematically showing the configuration of a specific example of a conventional radio-controlled timepiece.
- FIG. 4 is a plan view schematically showing the configuration of another specific example of a conventional radio-controlled timepiece.
- FIG. 5 is a cross-sectional view illustrating details of the configuration of a conventional radio-controlled timepiece.
- FIG. 6 is a cross-sectional view showing an example of the configuration of the joint portion between the body member and the back cover member of the metal exterior portion in the radio-controlled timepiece according to the invention.
- FIG. 7 is a cross-sectional view illustrating a specific example of the joint fixing portion in the metal exterior portion according to the present invention.
- FIG. 8 illustrates an example of the arrangement of the joint fixing portion in the metal exterior according to the present invention. It is a top view.
- FIG. 9 is a graph illustrating the effect of the gain of the antenna unit in the electronic device according to the present invention.
- FIG. 10 is a view showing an example of the structure of the body member and the back cover member in the electronic apparatus according to the present invention.
- FIG. 11 is a view showing another example of the structure of the body member and the back cover member in the electronic apparatus according to the present invention.
- FIG. 12 is a view showing still another example of the structure of the body member and the back cover member in the electronic apparatus according to the present invention.
- FIG. 13 is a view showing still another example of the structure of the body member and the back cover member in the electronic apparatus according to the present invention.
- FIG. 14 is a view showing still another example of the structure of the body member and the back cover member in the electronic apparatus according to the present invention.
- FIG. 1 is a diagram illustrating the configuration of a radio-controlled timepiece that is a specific example of the electronic device according to the present invention.
- FIGS. 1 and 6 at least the antenna unit 3 2
- the metal exterior part 3 1 is composed of a part 3 1 and the metal exterior part 3 1 is connected to the metal exterior part 3 1 from the outside of the metal exterior part 3 1.
- a radio-controlled timepiece 30 configured to receive and resonate with a magnetic flux
- the metal exterior part 31 includes at least a metal body member 45 and a metal back cover. 4 and the metal body member 4 5 and the metal back cover member 4 1. And at least a portion W 1 facing the substantially central portion P of the antenna portion 3 2, or a portion near the portion W 1, and the back cover member 4.
- a radio frequency correction clock 30 is shown that is not provided with a joint fixing part 40 0 for joining and fixing 1 and. In the present invention, it is desirable that the antenna portion 3 2 is disposed in the vicinity of the outer peripheral edge portion of the metal exterior portion 3 1.
- Fig. 6 shows a cross-sectional view taken along line YY in Fig. 1 (B).
- the metal exterior part 31 is composed of a body member 45 and a back cover member 41, and the body member 45 has a substantially cylindrical shape.
- a windshield glass 4 3 is attached to the step 3 7 a on the inner peripheral edge of the upper opening through a packing 4 6, and the back cover member 4 1 is attached to the lower opening in FIG.
- a joint fixing portion 400 is formed at a predetermined joint portion 39 that is joined to the peripheral portion.
- 5 1 is a space part
- 3 3 is an information processing device such as CPU.
- Reference numeral 4 2 denotes a watch movement
- reference numeral 3 5 denotes time information display means for supporting the hands 3 6.
- the antenna section 3 2 has a configuration in which an antenna coil section 40 is wound around a magnetic core material 3 8.
- the radio-controlled timepiece 30 in order to join and fix the metal body member 45 to the joint part 39 of the metal back cover member 41.
- two to six joint fixing parts 400 are usually arranged in a discrete manner at substantially equal intervals, as shown in FIG. is there.
- the joint fixing part 4 0 0 is arranged at two positions of 12:00 and 6 o'clock in the joint part 39 of the body member 4 5 and the back cover member 4 1.
- a graph as shown in the graph (A) in Fig. 9 was obtained.
- the present inventors connect the joint fixing part 400 with the flange of the joint part 39 between the body member 4 5 and the back cover member 41, and When the gain of the antenna section 32 was measured at four positions including the position facing the section 32, the graph shown in graph (B) of Fig. 9 was obtained.
- the gain of the antenna unit 3 2 has no problem in use as a product, but it has been found that the gain is significantly reduced compared to the configuration described above.
- the present inventors have assumed that the provision of the joint fixing part 400 in the vicinity of the antenna part 3 2 will adversely affect the gain of the antenna part 3 2.
- the present invention has been reached.
- the joint fixing portion 40 0 is connected to the body member 4 5 and the back cover member 4 1.
- Fig. 9 shows the graph of Fig. 9 when the gain of the antenna part 3 2 is measured when the antenna part 3 9 is arranged at four positions in the joint part 39 except for the joint part facing the antenna part 3 2 in the joint part 39.
- a graph as shown in (C) was obtained.
- the joint fixing portion 40 0 is opposed to the antenna portion 3 2 in the joint portion 39 between the trunk member 4 5 and the back cover member 4 1.
- Fig. 9 (A) shows the measurement results at 4 OKH z
- Fig. 9 (B) shows the measurement results at 60 KHz, both of which show the same results. Can understand what is shown.
- the present inventors a joint portion between the metal back cover member and the metal barrel member, and the electronic device 30
- the joint part 39 formed between the line X 1 and X 2 connecting the center point O and both ends 3 2 — 1 and 3 2 — 2 of the antenna part 3 2. It turned out that it would be desirable to configure the joint fixing part 400 so that it is not provided in W 2.
- the present inventors are a joint portion 39 between the metal back cover member and the metal barrel member, and the center of the electronic device 30. This point is formed between Y 1 and Y 2 connecting point O and both ends 4 0 — 1 and 4 0 — 2 of the antenna coil part 4 0 constituting the antenna part 3 2. It is also desirable to configure so that the joint fixing part 400 is not provided in the joint part 39, that is, W3.
- the antenna part 3 2 is composed of a substantially linear or curved rod-like body having a maximum longitudinal length shorter than the maximum diameter part length of the metal exterior part 3 1.
- the structure shown in FIG. in the electronic apparatus, the metal barrel member 45 and the metal back cover member 41 are joined portions 39, and at least the center of the antenna portion 3 2 is used.
- the antenna portion formed between the intersection Z 1 and Z 2 of the axis R and the joint portion 39 3 9 in the part close to 2 2, that is, W 4, is not provided with a joint fixing part 400 for joining and fixing the body member and the back cover member. It is also desirable to configure it.
- the electronic device 30 according to the present invention is desirably one selected from a radio wave correction watch, a mobile phone, and a wireless communication device.
- the joint fixing portion 400 used in the present invention does not have a continuous planar shape, but is discrete when viewed from the joint portion ⁇ and viewed in a plan view. It is desirable that the spot shape has a small area and has an independent shape such as a circle, a rectangle, a polygon, and an ellipse.
- a plurality of the joint fixing portions 40 0 in the present invention are arranged in the joint portion 39 that circulates around the electronic device 30, specifically, the joint
- the number of fixed parts is preferably one selected from 2 to 6.
- the structure of the joint fixing portion 400 used in the present invention is not particularly limited, and a conventionally known joint fixing method can be adopted.
- screw method for example, screw method, internal screw method, fixing method using multiple screwed bolts, caulking method, packing fixing method (including GN-4 and GN-7), dowel-eating fixing method
- the back cover member and the body member are joined by one or more types of fixing means selected from a snap method, a welding method, a rowing method, a bayonet method, a solid phase diffusion bonding method, etc. It is what has been done.
- the fixation cannot be released.
- at least one of the body member 45 or the back cover member 4 1 is constituted by a plurality of constituent elements, and the constituent elements are detachable.
- screw method internal screw method, fixing method using multiple screwed bolts, caulking method, packing fixing method (including GN-4 and GN-7), doweled
- packing fixing method including GN-4 and GN-7
- doweled One or more types of fixing means selected from a fixing method, a snap method, a bayonet method, etc. may be used.
- Fig. 10 (A) shows that the monthly member 4 5 is divided into two members 4 5 — 1 and 4 5 — 2 and the two are connected by appropriate screw means 4 8 via packing 4 9 — 1.
- a fixed example is shown
- 4 9 1 2 is also a sticker.
- the kin used in the present invention may be a rubber packing or a plastic packing.
- FIG. 10 (B) is similar to FIG. 10 (A) in that, for example, a silver paste 4 20 is disposed at a part of the joint between the body member 45 and the back cover member 41.
- the electrical conduction is taken and static electricity measures are taken.
- the silver paste 4 20 is desirably provided at a position opposite to the position where the antenna section 3 2 is disposed.
- Fig. 10 (C) is the same as Fig. 10 (A), in which the body member 4 5-2 and windshield glass 4 3 are fixed by packing through packing 4 9-2 and opened and closed. This is an example in which the claw portions 4 2 1 for use are arranged in at least two places.
- the claw portion 4 2 1 is necessary when opening the interior from the body member 4 5 1 2 side by repair or the like when the body member 4 5 and the back cover member 4 1 are fixed by welding or the like.
- At least one of the body member 45 and the back cover member 41 is composed of a plurality of components, and the components are welded, Clamping method, solid phase diffusion bonding method or other bonding method, the body member 4 5 and the back cover member 4 1 are screw method, internal screw method, fixing method using multiple screwed bolts, force
- fixing methods selected from the shim method, packing fixing method (including GN-4 and GN_7), dowel bite fixing method, snap method, bayonet method, etc. There is no.
- Fig. 11 (A) shows that the back cover member 4 1 is composed of two components 4 1 — 1 and 4 1 — 2, and they are packed using a packing 4 9 1 2 (GN— 4 and GN-7), and the body member 4 5 and the back cover member 4 1 are fixed with appropriate screw means 4 8 via packing 4 9-1 Show.
- the X portion indicates an appropriate support member (the cylinder This is an example of welding 4 3 — 1 and it is desirable not to provide the welded part around the antenna part 3 2.
- FIG. 11 (C) when the back cover member 4 1 and the body member 4 5 are detachably fixed in FIG. 11 (A), the opening / closing claw portions 4 2 1 This is an example in which is placed in at least two locations.
- FIG. 11 (B) shows a part of the junction between the back cover member 4 1 1 1 and 4 1-2 in FIG. 1 1 (A).
- measures are taken against static electricity by placing the, and establishing continuity between each other.
- the silver paste 4 20 be provided at a position opposite to the position where the antenna section 3 2 is disposed.
- the body member 4 5 is composed of two components 4 5 — 1 and 4 5 — 2, which are appropriately fixed via packing 4 9 _ 2
- the constituent elements 4 1-1 and 4 1-2 are fixed by an appropriate screw means 4 8 via a back cover member 4 1 connected by solid phase diffusion bonding and a packing 4 9-1.
- the portion X in Fig. 12 (A) shows an example of welding an appropriate support member (another component of the cylinder) 4 3-1 to the cylinder member 45. It is desirable not to provide the welded part around the antenna part 3 2. Also, when joining by means other than welding, row attachment, solid phase diffusion joining, or other methods that cannot be released, place the packing 4 9 1 4 shown in the X part.
- FIG. 12 (C) shows an example in which the opening / closing claw portions 4 2 1 are arranged in at least two places, as in FIG. 11 (C).
- Fig. 1 2 (B) shows the silver paste in Fig. 1 2 (A) with a part of the junction between the components 4 1-1 and 4 1-2 of the back cover member.
- An example is shown in which 4 2 0 is placed to establish electrical continuity between each other and take measures against static electricity.
- the silver paste 4 20 be provided at a position opposite to the position where the antenna section 32 is disposed.
- Fig. 1 2 (A) the components 4 5 — 1 and 4 5 — 2
- An example is shown in which silver paste 4 2 0 — 1 is placed at the junction to prevent continuity between them and to take measures against static electricity.
- the joining means of the components 4 5-1 and 4 5 _ 2 of the body member 4 5 must be unreleasable at the joining portion. If the packing 4 9 _ 2 as shown in FIG. 2 is arranged, it is desirable that the joining portion be bonded and fixed using, for example, an appropriate adhesive, while the packing 4 9 1 In the case where 2 is not arranged, the joint can be fixed using, for example, welding means.
- a concave portion for example, a claw portion in FIGS. 10 to 12
- a mark that cannot be attached / detached for example, the corresponding member is not provided with a recess to which a tool can be attached, but only one recess is provided and a tool is attached. It is even better if there is no such thing.
- the packing material is preferably rubber (eg, fluorine-based), “Teflon” (registered trademark), or metal (eg, stainless steel).
- FIG. 7 (A) is a cross-sectional view showing an example in which the dowel bite fixing method is adopted as a configuration of one specific example of the joint fixing portion 400 according to the present invention.
- A) A plurality of joint fixing parts 400 having the same configuration as that of A) are formed between the body member 45 and the back cover member 41 of the metal exterior part of the electronic device 30. It is provided at a predetermined position of the part 39.
- a plurality of dowel portions 4 1 0 are provided on the back cover portion 4 1, and the projections 4 1 5 of the dowel portions 4 1 0 are fitted into the groove portions 4 1 4 provided on the body portion 4 5.
- the body part 4 5 and the back cover part 4 1 are fixed via an appropriate packing 4 1 1 if necessary.
- 4.1 5 indicates the fixing method with the inner dowel bite, but it is also possible to use the outer dowel biting fixing method with the opposite structure to the inner dowel biting fixing method. Is possible.
- FIG. 7 (B) is a cross-sectional view showing an example in which a screw-attached bolt member 40 2 is used as the joint fixing portion 4 0 0 at the joint portion 3 9.
- a plurality of members 40 2 are provided at predetermined positions of joint portions 39 formed between the body member 45 of the metal exterior portion and the back cover member 41 in the radio-controlled timepiece 30. It is what can be done.
- FIG. 7 (C) shows an example in which an internal screw system is used as the joining means 4 7 of the joint fixing part 400.
- the metal material constituting the metal exterior part 31 used in the present invention is not particularly limited, but is stainless steel, titanium, titanium alloy, gold, gold alloy, silver, silver. Alloys, Copper, Copper alloys, Brass, Aluminum, Aluminum alloys, Zinc, Zinc alloys, Magnesium, Magnesium alloys and cemented carbides (alloys containing tungsten and tantalum) Metals composed of one or more materials selected from (1) can be used.
- FIG. 13 shows a structure using an inner dowel bite and attached fixing means as the joining means 4 7 of the fixing part 400 as shown in FIG. 7 (A). It was found that changing the length L of the upper edge 4 16 of 4 10 also changes the reception characteristics.
- FIG. 13 (A) when the length L 1 of the upper edge portion 4 16 of the dowel portion 4 10 is set to be longer than that shown in FIG. 13 (B)
- Figure 13 (B) shows a comparison between the case where the length 2 of the upper edge portion 4 16 of the dowel portion 4 10 is set shorter than the length of L 1 described above.
- the one with the dowel structure is shown in Fig. 13 (A). It was found that the reception characteristics were improved compared to those having the dowel structure shown. The reason for this is that the dowel portion structure shown in Fig. 13 (B) is higher in the upper portion of the dowel portion 4 10 than the dowel portion structure shown in Fig. 13 (A).
- the inner dowel is used as the joining means 4 7 of the fixing portion 400 as shown in FIG. It was found that the receiving sensitivity of the antenna changes by changing the angle of the protrusion 4 15 of the dowel 4 10 in the configuration using the biting fixing means.
- the present invention adopts the configuration as described above, it solves the above-described problems of the prior art and drastically changes the structure, exterior materials, or design of electronic devices including conventional radio-controlled timepieces. Without using an antenna unit with a simple configuration, the receiving efficiency is good, the size and thickness of the electronic device itself is not different from the conventional one, and the degree of freedom of the design surface is increased. In addition, electronic devices that can keep manufacturing costs low can be easily obtained.
- the electronic device according to the present invention employs the technical configuration as described above, By specifying the position of the joint fixing part, it becomes possible to further improve the gain of the antenna part arranged in the conventional metal exterior part, making it lighter, smaller, It has become possible to manufacture electronic devices that can be made thinner.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/578,080 US7813712B2 (en) | 2004-08-25 | 2005-08-25 | Electronic device having metal outer case and antenna therein |
CN2005800174074A CN1961457B (zh) | 2004-08-25 | 2005-08-25 | 电子装置 |
JP2006532771A JP4695088B2 (ja) | 2004-08-25 | 2005-08-25 | 電子機器 |
EP05776715A EP1793450B1 (en) | 2004-08-25 | 2005-08-25 | Electronic device |
HK07111623.5A HK1103173A1 (en) | 2004-08-25 | 2007-10-26 | Electronic device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004244800 | 2004-08-25 | ||
JP2004-244800 | 2004-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006022433A1 true WO2006022433A1 (ja) | 2006-03-02 |
Family
ID=35967627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/015961 WO2006022433A1 (ja) | 2004-08-25 | 2005-08-25 | 電子機器 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7813712B2 (ja) |
EP (1) | EP1793450B1 (ja) |
JP (1) | JP4695088B2 (ja) |
KR (1) | KR100978519B1 (ja) |
CN (1) | CN1961457B (ja) |
HK (1) | HK1103173A1 (ja) |
WO (1) | WO2006022433A1 (ja) |
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JP2007263572A (ja) * | 2006-03-27 | 2007-10-11 | Casio Comput Co Ltd | 機器ケースおよび電波時計 |
JP2021186288A (ja) * | 2020-05-29 | 2021-12-13 | 株式会社エンジョイトイズ | ***促進器 |
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US8073131B2 (en) * | 2005-01-03 | 2011-12-06 | Fellowes, Inc. | Portable device case with corner protector |
CN101132715B (zh) | 2005-01-03 | 2012-10-10 | 斐乐公司 | 用于携带式套壳的可移除的安装柱件组件 |
KR101529921B1 (ko) * | 2008-11-04 | 2015-06-18 | 엘지전자 주식회사 | 와치형 단말기 |
JP4692608B2 (ja) | 2008-11-12 | 2011-06-01 | カシオ計算機株式会社 | 電波時計 |
JP5413318B2 (ja) * | 2010-07-05 | 2014-02-12 | セイコーエプソン株式会社 | 電子時計 |
CN105676628B (zh) * | 2012-09-24 | 2018-03-23 | 精工爱普生株式会社 | 天线内置式电子表 |
TWI557984B (zh) * | 2014-03-05 | 2016-11-11 | 緯創資通股份有限公司 | 穿戴式裝置 |
US10333200B2 (en) * | 2015-02-17 | 2019-06-25 | Samsung Electronics Co., Ltd. | Portable device and near field communication chip |
JP6724315B2 (ja) * | 2015-09-07 | 2020-07-15 | カシオ計算機株式会社 | 電子時計 |
JP6902982B2 (ja) * | 2017-10-31 | 2021-07-14 | シチズン時計株式会社 | 電波時計 |
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- 2005-08-25 WO PCT/JP2005/015961 patent/WO2006022433A1/ja active Application Filing
- 2005-08-25 KR KR1020067024696A patent/KR100978519B1/ko active IP Right Grant
- 2005-08-25 US US11/578,080 patent/US7813712B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
EP1793450A1 (en) | 2007-06-06 |
CN1961457A (zh) | 2007-05-09 |
JPWO2006022433A1 (ja) | 2008-05-08 |
HK1103173A1 (en) | 2007-12-14 |
JP4695088B2 (ja) | 2011-06-08 |
EP1793450B1 (en) | 2012-09-12 |
KR100978519B1 (ko) | 2010-08-31 |
US7813712B2 (en) | 2010-10-12 |
EP1793450A4 (en) | 2010-12-22 |
CN1961457B (zh) | 2012-10-17 |
US20080293373A1 (en) | 2008-11-27 |
KR20070045148A (ko) | 2007-05-02 |
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