EP0359181A2 - Elektronische Uhr mit analoger Zeitanzeigeeinheit und elektrooptischer Datenanzeigeeinheit - Google Patents

Elektronische Uhr mit analoger Zeitanzeigeeinheit und elektrooptischer Datenanzeigeeinheit Download PDF

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Publication number
EP0359181A2
EP0359181A2 EP8989116793A EP89116793A EP0359181A2 EP 0359181 A2 EP0359181 A2 EP 0359181A2 EP 8989116793 A EP8989116793 A EP 8989116793A EP 89116793 A EP89116793 A EP 89116793A EP 0359181 A2 EP0359181 A2 EP 0359181A2
Authority
EP
European Patent Office
Prior art keywords
case
display unit
case member
timepiece according
terized
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP8989116793A
Other languages
English (en)
French (fr)
Other versions
EP0359181B1 (de
EP0359181A3 (de
Inventor
Wataru Pat. Dept. Dev. Div. Hamura R&D Ctr Yamada
Yukio Pat. Dept. Dev. Div. Hamura R&D Center Kido
Hiroyuki Pat. Dept. Dev. Div. Hamura R&D Ctr. Abe
Shunji Pat. Dept. Dev. Div. Hamura R&D Ctr Minami
Shigeru Pat. Dept. Dev. Div. Hamura R&D Ctr Katoh
Junro Pat. Dept. Dev. Div. Hamura R&D Ctr Yano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Casio Computer Co Ltd
Original Assignee
Casio Computer Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP63226576A external-priority patent/JPH0275992A/ja
Priority claimed from JP3079489U external-priority patent/JPH02122394U/ja
Application filed by Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Publication of EP0359181A2 publication Critical patent/EP0359181A2/de
Publication of EP0359181A3 publication Critical patent/EP0359181A3/de
Application granted granted Critical
Publication of EP0359181B1 publication Critical patent/EP0359181B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0082—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0064—Visual time or date indication means in which functions not related to time can be displayed

Definitions

  • the present invention relates to an electronic timepiece including an analog time display unit for indicating time with hands and an electrooptic data display unit for displaying data.
  • the combination wristwatch is a combination of a hand display type electronic wristwatch for displaying time with hands, to which a variety of functions, e.g., a function of displaying a date and a day of the week, an alarm function, and a stopwatch function, are added, and a liquid crystal data display unit for displaying these data.
  • two display por­tions of an analog time display unit and an electrooptic data display unit are mounted side by side on a single surface of a case.
  • at least one of the areas of the two display portions must be reduced.
  • a display on a small-area display portion becomes difficult to see.
  • the planar shape of the case of the wristwatch is increased in size.
  • the above wristwatch is equipped with more sophisticated functions such as a telephone number storing function and a calculator function. For this reason, a large number of switches must be newly mounted on the case. This further increases the planar shape of the wristwatch case in size.
  • the time display portion of the analog watch can be increased in size, since the display portion of an electrooptic data display unit of the calculator and an operation portion of a switch unit are mounted side by side on a single surface, the data display portion is reduced in size, or the number of switch units which can be arranged is undesirably limited.
  • a watch case is constituted by upper and lower half cases.
  • An analog time display unit is arranged in the upper half case, whereas an electrooptic data display unit and a switch unit are arranged in the lower half case.
  • the upper half case is coupled to the lower half case so as to be freely opened/closed.
  • the thickness of the watch case is increased.
  • the display portion of the analog time display unit can be increased in size, since the data display portion of the electrooptic data display unit and an operation portion of the switch unit are mounted on a signal surface of the lower half case, the data display portion must be reduced in size with an increase in number of switch units, or the number of switches which can be arranged is undesirably limited.
  • an electronic timepiece comprising: a plate member having a switch input portion for data input mounted on an upper surface thereof; a case member mounted on one end of the plate member so as to be freely opened and closed; an analog time display unit, housed at an upper position in the case member, for displaying time with hands; an electrooptic data display unit, housed in at a lower position in the case, for displaying data; and an electronic circuit, housed in the case member, for driving the analog time display unit, the electronic circuit being electrically connected to the switch input section so as to cause the electrooptic data display unit to display data input from the switch input section.
  • the overall timepiece case is reduced in profile and size, the areas of the display portions of the analog time display unit and the electrooptic data display unit can be increased, and moreover, a large number of switch units can be arranged, thereby pro­viding a multifunctional electronic timepiece in which display contents on the display portions are easy to see and operability of the switch portion is excellent.
  • Such an arrangement is especially suitable for small timepiece such as wristwatches.
  • the case member is closed, the timepiece looks like an analog timepiece and is excellent in design.
  • An electronic wristwatch of the first embodiment is a multifunctional timepiece.
  • a case 1 is attached to a plate 2 by using pins 3 so as to be freely opened and closed.
  • analog and digital display sections 4 and 5 are respectively formed on the upper and lower surfaces of the case 1.
  • a sheet switch 6 is arranged on the upper surface of the plate 2.
  • the sheet switch 6 and the digital display section 5 are electrically connected to each other through a flexible wiring board 7.
  • Watch bands 8 are respectively attached to the front and rear ends of the plate 2. The respective members will be sequentially described below with reference to Figs. 3 and 4.
  • the case 1 is made of a metal such as stainless steel, a synthetic resin, or the like and is constituted by upper and lower half cases 1a and 1b.
  • a watch glass 9 is fitted in the upper surface of the upper half case 1a through a packing 9a.
  • a housing 10 in which the analog and digital display sections 4 and 5 are housed is arranged in the case 1.
  • the upper and lower half cases 1a and 1b are coupled to each other through a waterproof ring 11a by using screws 11b.
  • a push button switch 12 is arranged on the periphery of the case 1. This push button switch 12 serves as not only an ON/OFF switch of a lamp for illuminating the analog display section 4 and but also as an alarm stop switch for stopping an alarm sound.
  • the analog display section 4 moves hands 13 to display time.
  • a hand shaft 14a of an analog movement 14 housed in the housing 10 protrudes upward through a center hole 15a formed in a dial plate 15 arranged on an upper portion of the housing 10.
  • the hands 13 such as hour and minute hands 13a and 13b are attached to the upper end of the hand shaft 14a, and the hands 13 are moved above the dial plate 15.
  • a piezoelectric element 16 for generating an alarm sound is fixed to the lower surface of the dial plate 15.
  • the digital display section 5 electrooptically displays data such as time and is constituted by a liquid crystal display panel (electrooptic data display element) 17, a circuit board 18, and the like which are housed in the housing 10. More specifically, the liquid crystal display panel 17 is electrically connected to the circuit board 18 through a film board 20 and an interconnector 21.
  • the display panel 17 electroopti­cally displays various data, e.g., time, a memo, and a schedule, and corresponds to a display glass 19 arranged at a predetermined position of the lower half case 1b.
  • the circuit board 18 includes a quartz oscillator and various electronic parts such as LSIs (not shown) required for a watch function, a calculation function, a storage function, and the like, and is placed at the center in the housing 10.
  • LSIs LSIs
  • a battery cover 22 is arranged on one side of the display glass 19 in the lower half case 1b, and a battery 23 is housed inside the cover 22.
  • the plate 2 is made of a metal such as stainless steel or a synthetic resin and is substantially flat.
  • a switch housing recess 2a is formed in the upper surface of the plate 2.
  • Band attaching portions 24 and 25 are respectively formed at both the ends of the plate 2. Of these band attaching portions 24 and 25, a pair of band attaching portions 24 are located at a lower position in Fig. 4 and project from the right and left ends of the lower edge of the plate 2. The proximal end of the lower watch band 8 is placed between the pair of por­tions 24, and the band 8 is attached to these portions 24 by using the pins 3 inserted from the outside of the pair of band attaching portions 24.
  • a pair of band attaching portions 25 are located at an upper position in Fig.
  • the proximal end of the upper watch band 8 is placed between the pair of portions 25, and at the same time a pair of attaching portions 27 of the upper half case 1a are placed outside these portions 25.
  • the case 1 is pivotally attached to the pair of portions 25, and at the same time the watch band 8 is attached thereto by using the pins 3 inserted from the outside of the pair of portions 25 in the same manner as described above.
  • the sheet switch 6 serves as a key input section and includes a large number of keys.
  • the sheet switch 6 is arranged in the switch housing recess 2a formed in the upper surface of the plate 2.
  • the sheet switch 6 comprises a flexible film having a lower surface on which movable contacts are mounted in the form of a matrix, a spacer arranged on the lower surface of the flexible film and having openings at positions corre­sponding to the movable contacts, and a hard board mounted on the lower surface of the spacer and having stationary contacts which can be connected/disconnected to/from the movable contacts through the openings of the spacer.
  • a plurality of letter keys are assigned to the respective keys of a ten-key pad and function keys.
  • a mode key (MODE) 6a is arranged at a predetermined position (lower right corner) of the sheet switch 6.
  • a time display mode, a memo mode, a schedule mode, a telephone mode, and a calculation mode are cyclically set in an electronic circuit 28 shown in Fig. 5 every time the mode key 6a is depressed.
  • the flexible wiring board 7 electrically connects the sheet switch 6 to the circuit board 18 of the digital display section 5.
  • the board 7 is designed such that a large number of wires are formed into a pattern on a surface of a flexible film and are coated with an insulating material.
  • One end of the flexible wiring board 7 is connected to the sheet switch 6.
  • An intermediate portion of the board 7 is located near the coupling portion of the case 1 and the plate 2.
  • the other end of the board 7 is inserted in the case 1 and connected to the circuit board 18 on a base 26 in the housing 10 through an interconnector 27. Therefore, the intermediate portion of the flexible wiring board 7 is elastically bent upon an opening/closing operation of the case 1.
  • Fig. 5 is a block diagram showing a schematic circuit arrangement of the electronic wristwatch of the first embodiment.
  • Reference numeral 28 denotes an electronic circuit for driving the analog and digital display sections 4 and 5.
  • the electronic circuit 28 outputs a drive pulse to a step motor of the analog movement 14. Upon recep­tion of the drive pulse, the step motor is rotated. This rotation is transmitted to the hands 13 through a wheel train mechanism of the analog movement 14 so as to rotate the hands 13.
  • the electronic circuit 28 receives a key input signal from the sheet switch 6.
  • the electronic circuit 28 converts data based on the key input signal into a display drive signal and outputs it to the liquid crystal display panel 17.
  • the electronic circuit 28 includes an oscillating circuit 28a for generating a reference signal, a fre­quency dividing circuit 28b for frequency-dividing an output from the circuit 28a to obtain one frequency-­divided 1P/M signal, and a motor driving circuit 28c for generating one frequency-divided drive pulse on the basis of the 1P/M signal from the circuit 28b and outputting it to the step motor of the analog movement 14.
  • the electronic circuit 28 further includes a control circuit 28d, electrically connected to the sheet switch 6, for obtaining data based on an input signal from the sheet switch 6, and a display driving circuit 28f for receiving the data obtained by the circuit 28d, converting the data into a display drive signal, and supplying it to the liquid crystal display panel 17, thereby displaying the data on the display panel 17.
  • a control circuit 28d electrically connected to the sheet switch 6, for obtaining data based on an input signal from the sheet switch 6, and a display driving circuit 28f for receiving the data obtained by the circuit 28d, converting the data into a display drive signal, and supplying it to the liquid crystal display panel 17, thereby displaying the data on the display panel 17.
  • the watch looks like a normal analog watch, as shown in Figs. 1A and 1B. In this case, time is indicated by the hands 13, and the elec­tronic wristwatch becomes compact in outer appearance and easy to carry.
  • the case 1 is pivoted to the opening position and is separated from the plate 2, the digital display section 5 mounted on the lower surface of the case 1 and the sheet switch 6 mounted on the plate 2 appear, as shown in Figs. 2A, 2B, and 4. In this case, when the respective keys of the sheet key 6 are operated, predetermined data can be displayed on the liquid crystal display panel 17 of the digital display section 5.
  • the mode key 6a of the sheet switch 6 is repeatedly operated, the time display mode, the memo mode, the schedule mode, the telephone mode, and the calculation mode are cyclically set in the electronic circuit 28. Data corresponding to a key operation in each mode is displayed on the display panel 17.
  • the analog and digital display sections 4 and 5 are respectively mounted on the upper and lower surfaces of the case 1.
  • the case 1 is pivotally attached to the plate 2 having the sheet switch 6 on its upper surface by using the pins 3 and can be stacked thereon.
  • the sheet switch 6 of the plate 2 and the digital display section 5 of the case 1 are connected to each other through the flexible wiring board 7.
  • the surface areas of the analog and digital display sections 4 and 5 and the key operation portion area of the sheet switch 6 do not limit each other, these areas can be set to substantially coincide with the upper and lower surfaces of the case 1 and the upper surface of the plate 2, respectively.
  • the display sections 4 and 5 become easy to see, and at the same time operability of the respective keys of the sheet switch 6 can be improved.
  • the case 1 and the plate 2 are pivotally attached to each other by using the pins 3 for attaching the watch band 8, a structure for pivotal coupling can be simplified, and the number of parts can be reduced.
  • coupling of the case 1 and the plate 2 can be completed by only inserting the pins 3 from the outside, assembly is facilitated.
  • a sheet switch 6 which is mounted on the upper surface of a plate 2 is pivotally attached to the plate 2.
  • An IC card 30 is housed at the upper surface of the plate 2 which is covered with the sheet switch 6.
  • a pair of coupling arms 31 are mounted on the sheet switch 6.
  • the coupling arms 31 respectively extend along the inner sides of a pair of band attaching portions 25 formed on the upper edge of the plate 2.
  • the proximal end of one watch band 8 is arranged between the pair of coupling arms 31 of the sheet switch 6.
  • the pair of coupling arms 31 of the sheet switch 6 and the proximal end of one watch band 8 are pivotally attached to a pair of band attaching portions 25 by using common pins 3. As shown in Fig.
  • a card housing recess 32 is formed in the upper surface of the plate 2.
  • the IC card 30 comprising an inte­grated circuit chip is detachably housed in the card housing recess 32, as shown in Fig. 7.
  • Connecting terminals 32a are formed on the upper edge of the bottom surface of the plate 2 at equal intervals.
  • the connecting terminals 32a are electrically connected to a circuit board 18 in the case 1 through a flexible lead 33 (Fig. 7) in the same manner as described in the first embodiment.
  • the electronic wrist­watch of the second embodiment is superior to that of the first embodiment in terms of performance and the number of functions.
  • a third embodiment of the present invention will be described below with reference to Fig. 9. Similarly, the same reference numerals in the third embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
  • a connector 34 can be detachably connected to an electronic wristwatch of the third embodiment so as to allow data exchange with an external device. More specifically, a connecting portion (not shown) to which the connector 34 is detachably connected is mounted in a side surface of a plate 2. The connecting portion is electrically connected to a digital display section 5 through a flexible wiring board 7 which connects a sheet switch 6 as described above to the digital display section 5 of a case 1. In addition, the connector 34 is connected to an external device through a cord 36.
  • the external device includes a wordprocessor, a personal computer, a printer, a radio pager, and the like.
  • the electronic wristwatch of the third embodiment is superior to that of the first embodiment in terms of performance and the number of functions.
  • a sheet switch 38 which is mounted on the upper surface of a plate 2 is designed to be laterally folded.
  • the sheet switch 38 is constituted by two keyboards 38a and 38b which are coupled to each other through coupling members 39 so as to be freely opened and closed.
  • Each of the keyboards 38a and 38b has an arrangement similar to that of the sheet switch 6 described above, and a large number of keys are arranged on each keyboard.
  • the keyboards 38a and 38b are housed in a switch housing recess 2a of the plate 2 while they are stacked on each other.
  • the keyboard 38a which is located at a lower position is fixed in a switch housing recess 2a and is electrically connected to a digital display section 5 of a case 1 through a flexible wiring board 7 in the same manner as in the first embodiment.
  • the area of the sheet switch 38 can be further increased, and hence a larger number of keys can be arranged on the sheet switch 38, thereby increasing the number of data which can be input to a circuit 28 (Fig. 5).
  • the sheet switch 38 is designed to be laterally folded in two.
  • the sheet switch 38 may be designed to be folded in three or more.
  • a fifth embodiment of the present invention will be described below with reference to Figs. 11 to 16.
  • the same reference numerals in the fifth embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
  • a frame-like seal member 51 having the same shape as that of a coupling portion of upper and lower half cases 55 and 56 constituting a case 1 is formed at one end of a flexible wiring board 50 which electrically connects a sheet switch 41 to a circuit board 18 in the case 1.
  • the seal member 51 is clamped between the upper and lower half cases 55 and 56 so as to waterproof the case 1.
  • the flexible wiring board 50 and the seal member 51 are integrally formed with each other, as shown in Figs. 13 to 16.
  • the sheet switch 41 is constructed by stacking a protective sheet 42, a double-sided adhesive tape 43 of a synthetic resin sheet on both side surfaces of which adhesive is applied, a stationary contact sheet 44, a spacer 45, a movable contact sheet 46, a double-sided adhesive tape 47 of a synthetic resin sheet on both side surfaces of which adhesive is applied, and a face sheet 48 upward in the order named.
  • Frame portions 42a, 43a, 44a, 45a, 46a, 47a, and 48a constituting the seal member, and connecting por­tions 42b, 43b, 44b, 45b, 46b, 47b, and 48b constituting the flexible wiring board 50 are integrally formed with the protective sheet 42, the double-sided adhesive tape 43, the stationary contact sheet 44, the spacer 45, the movable contact sheet 46, the double-sided adhesive tape 47, and the face sheet 48.
  • protrusions 42c, 43c, 44c, and 46c protruding in a space enclosed within the frame portions are respectively formed on the protective sheet 42, the double-sided adhesive tape 43, the stationary contact sheet 44, and the movable contact sheet 46.
  • the pro­trusion 46c of the movable contact sheet 46 is shorter than the other protrusions 42c, 43c, and 44c.
  • the protective sheet 42 and the face sheet 48 are made of a polyurethane resin. Key symbols such as a ten-key pad, function keys, and a mode key are printed on the upper surface of the face sheet 48.
  • the double-­sided adhesive tape 43 functions to adhere the protec­tive sheet 42 and the stationary contact sheet 44 to each other, and the double-sided adhesive tape 47 functions to adhere the face sheet 48 and the movable contact sheet 46 to each other.
  • the stationary and movable contact sheets 44 and 46 are made of a polyester resin.
  • the spacer 45 is constituted by a double-sided adhesive tape of a synthetic resin sheet on both side surfaces of which adhesive is applied.
  • the sheet switch 41 is waterproofed by the spacer 45 functioning to adhere the stationary contact sheet 44 and the movable contact sheet 46 to each other.
  • the above-described sheet switch 41 is bonded to the upper surface of the plate 2 through a double-sided adhesive tape 49 of a synthetic resin sheet on both side surfaces of which adhesive is applied bonded to the lower surface of the protective sheet 42.
  • a plurality of leads 44e are printed on the connecting portion 44b and the protrusion 44c of the stationary contact sheet 44 by using carbon, as shown in Fig. 16.
  • the stationary contacts 44d are electrically connected to the leads 44e, respectively.
  • a plurality of leads 46e formed on the connecting por­tion 46b and the protrusion 46c of the movable contact sheet 46 are respectively connected to the leads 44e by using a conductive adhesive agent. End portions of the leads 44e are respectively connected to terminals of a circuit board 18. With this arrangement, the station­ary and movable contacts 44d and 46d are electrically connected to an electronic circuit 28 (Fig. 11).
  • Waterproof double-sided adhesive tapes 53 and 54 each having the same shape as that of the seal member 51 are of synthetic resin sheets on each both side surfaces of which adhesive is applied, and are respectively bonded to the upper and lower surfaces of the seal member 51.
  • the seal member 51 is clamped between the upper and lower half cases 55 and 56 in a reversed state, while one waterproof double-­sided adhesive tape 54 is bonded to the lower surface of the upper half case 55, and the other waterproof double-sided adhesive tape 53 is bonded to the upper surface of the lower half case 56.
  • the upper and lower half cases 55 and 56 are bonded to each other, and a coupling portion thereof is water-tightly sealed.
  • the seal member 51 used for the coupling portion of the upper and lower half cases 55 and 56 of the case 1 is integrally formed with the flexible wiring board 50, an independent manufacturing step for the seal member 51 is not required, and attachment of the seal member 51 to the case 1 is facilitated.
  • a waterproof function of the seal member 51 may also be realized by bonding a waterproof elastic member such as silicone rubber to a surface or surfaces of one or both of the waterproof double-sided adhesive tapes 53 and 54, or by forming a waterproof elastic member such as silicone rubber by printing or the like in place of one or both of the tapes 53 and 54.
  • a waterproof elastic member such as silicone rubber
  • a sixth embodiment of the present invention will be described below with reference to Figs. 17 and 18.
  • the same reference numerals in the sixth embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
  • a case 1 is attached to a plate 2 through pins 3 so as to be freely opened and closed.
  • the case 1 can be locked to a closing position by using a lock/switch mechanism 61.
  • the lock/switch mechanism 61 comprises a movable member 64 which is slidably inserted in an insertion hole 63 formed in a wall portion 62 of the case 1 located at the left side in Fig. 17.
  • the distal end portion of the movable member 64 which extends outward from the wall portion 62 has a hemispherical shape.
  • An engaging portion 66 constituted by a hemispherical recess is formed in a wall portion 65 of the plate 2 located at the left side in Fig. 17 so as to correspond to the hemispherical end portion of the movable member 64.
  • a flange-like stopper 67 is mounted on the proximal end portion of the movable member 64 which extends inward from the wall portion 62 of the case 1.
  • a movable contact spring portion 69 which is constituted by part of a panel press plate 68 for fixing a liquid crystal display panel 17 is arranged at a position to oppose the proximal end face of the movable member 64 in the case 1.
  • a stationary contact 70 is mounted on an end face of a circuit board 18 which opposes the movable contact spring portion 69.
  • the lock/switch mechanism 61 is used to ON/OFF-control the liquid crystal display panel 17 of a digital display section 5. While the spring portion 69 is in contact with the stationary contact 70, the display panel 17 is turned off. While they are separated from each other, the display panel 17 is turned on.
  • the panel press plate 68 is constituted by a conductive metal plate, and is connected to a reference voltage.
  • the movable contact spring portion 69 constituted by a part of the panel press plate 68 for fixing the liquid crystal display panel 17 constitutes the ON/OFF switch of the display panel 17 together with the stationary contact 70 of the circuit board 18, and also serves as a spring for biasing the movable member 64 toward the lock direc­tion, a space required for forming lock and switch mechanisms can be saved. In addition, the cost of the electronic wristwatch can be decreased.
  • a seventh embodiment of the present invention will be described below with reference to Figs. 19 to 24.
  • the same reference numerals in the seventh embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
  • a piezoelectric element 72 is bonded to a lower half case 71 of a case 1 which is arranged on a side opposing a plate 2, and notches 74 for producing an alarm sound to the outside are formed in portions of a bonding surface between the case 1 and the plate 2.
  • the piezoelectric element 72 is bonded to the upper surface of the lower half case 71 (at a right end portion in Fig. 22).
  • the upper surface of the piezoelectric element 72 is electrically connected to a sound generating circuit of a circuit board 18 through a coil spring 73, and the lower surface of the element 72 is connected to a reference voltage through the lower half case 71 constituted by a conductive metal plate.
  • the notches 74 are respectively mounted in the left and right end portions of the lower surface of the plate 2. Note that the notches 74 may not be mounted in the case 1 but may be mounted in the plate 2. Alternatively, the notches 74 may be mounted at symmetrical positions of the case 1 and the plate 2.
  • a sheet switch 6 is attached to the upper surface of the plate 2 with a stationary member 75.
  • the piezoelectric element 72 is operated upon reception of a drive signal from the sound generating circuit of the circuit board 18 while the case 1 is closed as shown in Figs. 19 to 22, the lower half case 71 to which the piezoelectric element 72 is bonded is oscil­lated to generate an alarm sound. The alarm sound is then produced outside the case 1 through the two notches 74.
  • analog and digital display sections 5 and 4 are respectively formed into units, and are detachably coupled to each other.
  • a case 1 is constituted by upper and lower half cases 81 and 82 which are coupled to each other with screws 83, and is attached to a plate 2 so as to be freely opened and closed.
  • the analog display section 4 is housed in the upper half case 81.
  • a cover 84 is fixed to the inner surface of the upper half case 81 with screws 85.
  • the digital display section 5 is housed in the lower half case 82, and a cover is fixed to the inner surface of the lower half case 82 with screws 87.
  • a battery 88 is arranged between a circuit board 18 and a cover 86 at a position away from a pin 89.
  • An analog movement 14 of the analog display section 4 is arranged in the upper half case 81 at a position near the pin 89.
  • a portion of the cover 86 of the digital display section 5 in the lower half case 82 corresponding to the battery 88 protrudes from other portions of the cover 86.
  • a portion of the cover 84 of the analog display section 4 corresponding to the analog movement 14 protrudes from other portions of the cover 84.
  • the case 1 When the battery 88 in the electronic wristwatch is to be replaced with a new one, the case 1 is moved to the opening position, as shown in Fig. 26. As a result, the screws 83 used to couple the upper and lower half cases 81 and 82 to each other are exposed. The screws 83 are unfastened to release coupling of the upper and lower half cases 81 and 82. Thereafter, when only the lower half case 82 is pivoted toward the plate 2, the screws 87 used to fix the cover 86 to the lower half case 82 are exposed, as shown in Fig. 27. The exposed screws 87 are then unfastened to detach the cover 86 from the lower half case 82. As a result, the battery 88 is exposed. When the battery 88 is replaced with a new one, the above-described operation is performed in a reverse order. Finally, the upper and lower half cases 81 and 82 are coupled to each other with the screws 83, thus completing the battery replacement.
  • the analog and digital display sections 4 and 5 are respectively housed as discrete units in the upper and lower half cases 81 and 82, and moreover both the units are detachably coupled to each other with the screws 83. Therefore, if both the units are separated from each other by unfastening the screws 83, each unit can be independently dis­assembled or assembled. This facilitates disassembly and assembly of the case 1 required for battery replace­ment or repair of the analog movement 14.
  • a ninth embodiment of the present invention will be described below with reference to Figs. 28 and 29.
  • the same reference numerals in the ninth embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
  • two press projections are mounted on the lower surface of a case 1 so as to correspond to two specific keys on a sheet switch.
  • the two press projections depress the two specific keys on the sheet switch.
  • a digital display section is turned off to reduce current consumption of an electronic wristwatch.
  • Fig. 28 is a perspective view showing an electronic wristwatch according to the ninth embodiment, in which an upper half case is moved to a opening position.
  • Two projections 92 are mounted, on a surface of the case 1, which is stacked on a plate 2, at positions respectively corresponding to two keys 91a and 91b of a sheet switch 91.
  • the pair of projections 92 depress the two keys 91a and 91b of the sheet switch 91.
  • Fig. 29 shows a schematic arrangement of a circuit of the ninth embodiment.
  • the circuit is substantially constituted by a power source 93, a timer section 100 and a display/calculation circuit 110 for receiving power from the power source 93, a switching transistor 94 arranged on a power source supply line to the display/calculation circuit 110, a NAND gate 95 for supplying a gate signal to the switching transistor 94, a sheet switch 91, and a hand driving section 120 for driving hands to display time upon reception of a signal from the timer section 100.
  • timer section 100 current time is obtained by causing a time counting circuit 104 to count one frequency-divided 1P/M signal obtained by frequency-­diving a signal of a predetermined frequency output from an oscillating circuit 101 by using a frequency dividing circuit 102.
  • a motor driving circuit 103 Upon reception of the 1P/M signal, a motor driving circuit 103 outputs a drive signal to a step motor 121.
  • the hand driving section 120 transmits rotation of the step motor 121, which is driven by the output from the motor driving circuit 103, to hands 13 through a wheel train mechanism 122 so as to drive the hands 13 to display time.
  • the sheet switch 91 includes 20 key switches 91a to 91t whose movable contacts are set at a constant voltage VDD (H level).
  • the stationary contacts of the key switches 91a to 91t are connected to a switch control circuit 111.
  • the stationary contacts of the key switches 91a and 91b are further connected to the input terminals of the NAND gate 95.
  • the display/calculation circuit 110 includes the switch control circuit 111, a computer circuit 112, a display change circuit 113, and the above-described liquid crystal display panel 17.
  • the switch control circuit 111 supplies input data to the computer circuit 112, and at the same time supplies a display change signal d to the display change circuit 113.
  • the computer circuit 112 performs a calculation on the basis of the data input from the switch control circuit 111 and supplies the calculation result to the display change circuit 113.
  • the display change circuit 113 fetches the current time from the time counting circuit 104 and the calculation result from the computer circuit 112, and supplies either of them to the liquid crystal display panel 17 in accordance with a display change signal d from the switch control circuit 111.
  • the display panel 17 per­forms a digital display of the supplied current time or calculation result.
  • a small electronic device which can display addresses on the liquid crystal data display panel 17 in addition to current time and a calculation result, while the case 1 is set at the opening position, addresses, for example, are displayed on the display panel 17.
  • its circuit may be arranged such that when the case 1 is moved to the opening position after it is moved to the closing position, current time is always displayed on the display panel 17.
  • a tenth embodiment of the present invention will be described below with reference to Figs. 30 to 32.
  • the same reference numerals in the tenth embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
  • data which is displayed on a digital display section 5 can be seen from an analog display section 4.
  • an opening 131a is formed in a dial plate 131 of the analog display section 4 so as to correspond to a colon display element 130 which is turned on and off at a period of one second of a liquid crystal data display panel 17 of the digital display section 5.
  • Openings 132a and 133a are respec­tively formed in a housing 132 and a circuit board 133 located below the dial plate 131 so as to correspond to the opening 131a of the dial plate 131.
  • an opening 134a is formed in a reflecting plate 134 attached to the display panel 17 so as to correspond to the openings 132a and 133a.
  • openings 131a, 132a, and 133a constitute a path between the dial plate 131 and the display panel 17, and a lens 135 is arranged in the path.
  • the opening 131a of the dial plate 131 may be enlarged so as to allow a character or numeral display portion in the liquid crystal data display panel 17 to be seen through the opening 131a so that even while the case 1 is set at the closing position, data such as a date, a schedule, or a telephone number can be seen from the analog display section 4.
  • Figs. 33 and 34 show a modification of the tenth embodiment.
  • an opening 136a is formed in a dial plate 136 so as to correspond to a 4-digit numeral display element 137 of a liquid crystal data display panel 17 of a digital display section 5.
  • the 4-digit display element 137 can be seen through the opening 136a of the dial plate 136.
  • a date on the digital display section 5 can be seen.
  • the vertical and lateral posi­tions of the numeral display element 137 seen from the analog display section 4 while the case 1 is set at the closing position are reversed with respect to those of the numeral display element 137 seen on the digital display section 5 while the case 1 is set at an opening position.
  • a photosensor 138 on a plate 2 detects whether the case 1 is moved to the closing position so as to automatically change the vertical and lateral positions of each digit displayed on the numeral display element 137.
  • analog and digital display sections 4 and 5 are respectively arranged on the upper and lower surfaces of a case 1, and an electronic cir­cuit is arranged in the case 1.
  • the case 1 is fixed to the 3- or 9-o'clock side of a plate 2 so as to be freely opened and closed.
  • a sheet switch 6 is mounted on the upper surface of the plate 2. Similar to the above-described embodiments, the sheet switch 6 of the plate 2 and the electronic circuit are electrically connected to each other through a flexible wiring board 7 which extends at a coupling portion between the plate 2 and the case 1. Therefore, a structure for electrically connecting the sheet switch 6 of the plate 2 to the electronic circuit of the case 1 can be simplified.
  • the case 1 is attached to the 9-o'clock side of the plate 2 through a pin 140 so as to be freely opened and closed.
  • the case 1 can be locked to a closing position by using a lock mechanism (not shown).
  • Figs. 39 and 40 respectively show the upper and lower surfaces of an upper housing 141 housed in the case 1.
  • An analog movement housing opening 142 is formed in a central portion of the upper housing 141.
  • An analog movement comprising a step motor 143 and a wheel train mechanism 144 is housed in the analog movement housing opening 142.
  • a quartz oscillator housing opening 145 and a battery housing opening 146 are formed in the lower surface of the upper housing 141 at the 12-o'clock side.
  • a negative battery electrode plate 147 is mounted in the battery housing opening 146.
  • a flexible wiring board connecting recess 148 is formed in the lower surface of the upper housing 141 at the 9-o'clock side (right side in Fig. 40), as shown in Fig. 43.
  • a linear rubber member housing recess 149 is formed in the flexible wiring board connecting recess 148.
  • a rubber member 150 is housed in the rubber member housing recess 149 so as to partially protrude there­from.
  • screw holes 152 respectively formed at supports 151 embedded in the upper housing 141 are exposed at both the sides of the rubber member housing recess 149.
  • Positioning bosses 153 are respectively formed near the screw holes 152 in the flexible wiring board connecting recess 148.
  • Positioning holes 154 which are formed in one end portion of the flexible wiring board 7 forcibly fit in these positioning bosses 153.
  • One end portion of the flexible wiring board 7 is fixed in the flexible wiring board connecting recess 148 while being in con­tact with the protrusion surface of the rubber member 150.
  • a plurality of connecting elements 155 are mounted on the upper surface of the flexible wiring board 7 at a portion corresponding to the rubber member 150 in Fig. 43.
  • Two screw insertion holes 156 are formed in the flexible wiring board 7 at positions corresponding to the screw holes 152 of the recess 148, respectively.
  • An insulating sheet 157 is bonded to the flexible wiring board 7 except for one end portion described above.
  • Fig. 41 shows a state wherein a circuit board 18 is mounted in the upper housing 141.
  • the circuit board 18 is arranged on the lower surface of the upper housing 141 in such a manner that positioning holes 158 (partially shown in Fig. 43) formed at four predetermined positions of the circuit board 18 respectively forcibly fit over positioning bosses 159 formed at two predetermined positions on the lower surface of the upper housing 141 and the above-­described positioning bosses 153 of the flexible wiring board 7.
  • a quartz oscillator 160 mounted on the upper surface (lower surface in Fig. 41) of the circuit board 18 is housed in the quartz oscillator housing opening 145 of the upper housing 141.
  • An LSI 161 is arranged at a predetermined position on the lower surface (upper surface in Fig. 41) of the circuit board 18.
  • Two groups of liquid crystal data display panel connecting terminals 162 respectively form lateral arrays at the 12- and 6-o'clock sides of the LSI 161. These connecting terminal groups 162 are electrically connected to the LSI 161 through leads (not shown).
  • Through holes 163 are formed at a plurality of positions of the circuit board 18 at the 9-o'clock side (right in Fig. 41) of the LSI 161.
  • Through-hole con­nected through hole terminals 164 are respectively formed around both the ends of each of these through holes 163.
  • the through hole terminals 164 on the lower surface (upper surface in Fig. 41) of the circuit board 18 are electrically connected to the LSI 161 through leads 165.
  • the through hole terminals 164 on the upper surface (lower surface in Fig. 41) of the circuit board 18 are electrically connected to flexible wiring board connecting terminals 167 of the circuit board 18 through leads 166, respectively.
  • Screw insertion holes 168 are formed in the circuit board 18 at positions corresponding to the two screw holes 152 in the flexible wiring board connecting recess 148 of the upper housing 141.
  • a metal reinforcing plate 170 is arranged at a predetermined position on the lower surface (upper surface in Figs. 41 and 43) of the circuit board 18.
  • Two positioning holes 171 are formed in the reinforcing plate 170 at positions respectively corresponding to the two positioning bosses in the flexible wiring board connecting recess 148 of the upper housing 141.
  • screw insertion holes 173 are formed in the reinforcing plate 170 at positions respectively corresponding to the two screw holes 152 in the recess 148.
  • the reinforcing plate 70 is fixed to the upper housing 141 in such a manner that the two positioning holes 171 forcibly fit over the two positioning bosses in the recess 148 of the upper housing 141, and screws 174 are then threadably engaged with the screw holes 152 in the recess 148 of the upper housing 141 through the screw insertion holes 173, 168 and 156 of the reinforcing plate 170, the circuit board 18, and the flexible wiring board 7, respectively.
  • the connecting terminals 155 of the flexible wiring board 7 are urged by the connecting terminals 167 of the circuit board 18 due to the repulsive force of the properly compressed rubber member 150, so that the terminals 155 and 167 are electrically connected.
  • Fig. 42 shows a state wherein a lower housing 175 is attached to the upper housing 141.
  • the lower housing 175 is urged against the circuit board 18 by a support plate 178 which is fixed to the upper housing 141 with hook mechanisms 176 and screws 177.
  • the lower housing 175 is arranged on the lower surface (upper surface in Fig. 42) of the circuit board 18 such that positioning holes 179 (some of them are not shown) formed at four predetermined positions of the lower housing 175 receive the positioning bosses 153 and 159 of the upper housing 141 in the same manner as that of the circuit board 18.
  • the support plate 178 is fixed to the upper housing 141 with the hook mechanisms 176 and the screws 177 while positioning holes 180 formed at two predetermined positions of the support plate 178 receive the positioning bosses 153 and 159 of the upper housing 141.
  • a battery 23 is housed in the battery housing opening 146 of the upper housing 141 while the battery 23 is urged by a battery press plate 181.
  • the battery 23 is electrically connected to the circuit board 18 through the above-described negative battery electrode plate 147 (see Fig. 41) and a positive battery electrode plate 182 integrally formed with the support plate 178.
  • Two groups of connecting terminals are mounted at the 12- and 6-o'clock sides of the upper surface (lower surface in Fig. 42) of the liquid crystal data display panel 17 housed in the lower housing 175 so as to oppose the two groups of liquid crystal data display panel connecting terminals 162 of the circuit board 18.
  • the two groups of connecting terminals (not shown) of the display panel 17 and the two groups of connecting terminals of the circuit board 18 are electrically connected to each other through a rec­tangular parallel-piped interconnector (not shown).
  • the case 1 is attached to the 9-o'clock side of the plate 2 through the hinge pin 140 so as to be freely opened and closed, and the flexible wiring board 7 extends at the coupling portion between the case 1 and the plate 2.
  • the flexible wiring board connecting terminals 167 are mounted at the 9-o'clock side of the circuit board 18, the wiring patterns 164, 165, and 166 for connecting these connecting terminals 167 to the LSI 161 can be formed without interference with the liquid crystal data display panel connecting terminals 162 and elec­tronic parts such as the battery 23 and the quartz oscillator 160.
  • the circuit board 18 can be reduced in size, and wiring patterns can be easily formed.
  • the case 1 is attached to the 9-o'clock side of the plate 2 so as to be freely opened and closed.
  • the present invention is not limited to this.
  • the case 1 can be attached to the 3-o'clock side of the plate 2.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
EP19890116793 1988-09-12 1989-09-11 Elektronische Uhr mit analoger Zeitanzeigeeinheit und elektrooptischer Datenanzeigeeinheit Expired - Lifetime EP0359181B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP226576/88 1988-09-12
JP63226576A JPH0275992A (ja) 1988-09-12 1988-09-12 電子腕時計
JP30794/88U 1989-03-20
JP3079489U JPH02122394U (de) 1989-03-20 1989-03-20

Publications (3)

Publication Number Publication Date
EP0359181A2 true EP0359181A2 (de) 1990-03-21
EP0359181A3 EP0359181A3 (de) 1992-01-02
EP0359181B1 EP0359181B1 (de) 1993-12-01

Family

ID=26369208

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Application Number Title Priority Date Filing Date
EP19890116793 Expired - Lifetime EP0359181B1 (de) 1988-09-12 1989-09-11 Elektronische Uhr mit analoger Zeitanzeigeeinheit und elektrooptischer Datenanzeigeeinheit

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Country Link
EP (1) EP0359181B1 (de)
DE (1) DE68911075T2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1070997A1 (de) * 1999-07-22 2001-01-24 The Swatch Group Management Services AG Umkehrbare Armbanduhr
US6580479B1 (en) * 1997-07-18 2003-06-17 Citizen Watch Co., Ltd. Timepiece
AU2009341796B2 (en) * 2009-03-13 2014-08-07 Yogesh Kumar Kanhye Mobile phone including a sliding portion and a folding portion
EP3958069A1 (de) * 2020-08-18 2022-02-23 The Swatch Group Research and Development Ltd Armbanduhrgehäuse, das mit einem verkleidungselement ausgestattet ist

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502583A1 (de) * 1975-01-23 1976-07-29 Bertram Dipl Ing Botsch Kleiner elektronischer rechner
EP0022255A1 (de) * 1979-07-06 1981-01-14 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Elektronische Armbanduhr mit zwei verschiedenen Anzeigen
JPS57182686A (en) * 1981-05-07 1982-11-10 Citizen Watch Co Ltd Portable electronic device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502583A1 (de) * 1975-01-23 1976-07-29 Bertram Dipl Ing Botsch Kleiner elektronischer rechner
EP0022255A1 (de) * 1979-07-06 1981-01-14 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Elektronische Armbanduhr mit zwei verschiedenen Anzeigen
JPS57182686A (en) * 1981-05-07 1982-11-10 Citizen Watch Co Ltd Portable electronic device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 30 (P-173)(1175) 5 February 1983 & JP-A-57 182 686 ( CITIZEN TOKEI K.K. ) 10 November 1982 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6580479B1 (en) * 1997-07-18 2003-06-17 Citizen Watch Co., Ltd. Timepiece
EP1070997A1 (de) * 1999-07-22 2001-01-24 The Swatch Group Management Services AG Umkehrbare Armbanduhr
WO2001007970A1 (fr) 1999-07-22 2001-02-01 The Swatch Group Management Services Ag Montre-bracelet reversible
US6779917B1 (en) 1999-07-22 2004-08-24 The Swatch Group Management Services Ag Reversible wrist watch
AU2009341796B2 (en) * 2009-03-13 2014-08-07 Yogesh Kumar Kanhye Mobile phone including a sliding portion and a folding portion
EP3958069A1 (de) * 2020-08-18 2022-02-23 The Swatch Group Research and Development Ltd Armbanduhrgehäuse, das mit einem verkleidungselement ausgestattet ist
US11782390B2 (en) 2020-08-18 2023-10-10 The Swatch Group Research And Development Ltd Watch case equipped with an exterior element

Also Published As

Publication number Publication date
EP0359181B1 (de) 1993-12-01
EP0359181A3 (de) 1992-01-02
DE68911075D1 (de) 1994-01-13
DE68911075T2 (de) 1994-03-17

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