EP0359181A2 - Electronic timepiece with analog time display unit and electrooptic data display unit - Google Patents
Electronic timepiece with analog time display unit and electrooptic data display unit Download PDFInfo
- 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
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Classifications
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- 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.
Abstract
Description
- 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.
- A combination wristwatch has recently been available. 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.
- In such a combination wristwatch, 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. In order to reduce the wristwatch in size, at least one of the areas of the two display portions must be reduced. As a result, a display on a small-area display portion becomes difficult to see. In contrast to this, if both the areas are increased to allow displays on the two display portions to be easily seen, the planar shape of the case of the wristwatch is increased in size.
- Recently, in addition to the above-mentioned relatively simple functions, 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.
- In a wristwatch with a calculator disclosed in U.S. Patent No. 4,108,340, watch and calculator cases in which an analog display type watch and a calculator are respectively housed are fixed back to back, and a band is inserted in a through hole formed between the cases. The band can be freely reversed in the through hole. The two cases can be reversed on the band as needed so as to selectively set the analog watch or the calculator in the same direction as that of the surface of the band. In such a watch, the planar shape of the pair of cases can be reduced in size. However, the thickness of the pair of cases is increased. Although 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.
- In a dual display watch disclosed in U.S. Patent No. 4,444,513, 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. Similarly, in this watch, since the upper and lower half cases are stacked on each other, the thickness of the watch case is increased. Although 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.
- In the above-described two U.S. Patents, in order to increase the data display portion in size and increase switches in number, the calculator case and the lower half case must be increased in size. As a result, the planar shape of the watch case is inevitably increased in size.
- It is an object of the present invention to provide an electronic timepiece including an analog time display unit and an electrooptic data display unit having a low-profile, small watch case, in which the display portions of the analog time display unit and the electrooptic data display unit can be increased in size, and a large number of switch units can be arranged.
- In order to achieve the above object, according to the present invention, there is provided 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. - According to the above-described arrangement, although 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. In addition, if the case member is closed, the timepiece looks like an analog timepiece and is excellent in design.
- This invention can be more fully understood from the following detailed description when taken in conjunction with the accompanying drawings, in which:
- Fig. 1A is a plan view showing an electronic wristwatch according to a first embodiment of the present invention in a state wherein a case is closed;
- Fig. 1B is a side view showing the wristwatch in Fig. 1A in a state wherein the case is closed;
- Fig. 2A is a plan view showing the electronic wristwatch in Fig. 1A in a state wherein the case is open;
- Fig. 2B is a side view showing the electronic watch in Fig. 1A in a state wherein the case is open;
- Fig. 3 is a sectional view taken along a line A - A in Fig. 1A;
- Fig. 4 is an enlarged view showing a main part of the electronic wristwatch in Fig. 2A;
- Fig. 5 is a block diagram showing a circuit arrangement of the electronic wristwatch in Fig. 1A;
- Fig. 6 is a plan view showing a main part of an electronic wristwatch according to a second embodiment of the present invention in a state wherein a case is open;
- Fig. 7 is a side view showing an electronic wristwatch in Fig. 6 in a state wherein a switch portion is open;
- Fig. 8 is a plan view showing a main part of the electronic wristwatch in Fig. 7;
- Fig. 9 is a plan view showing an electronic wristwatch according to a third embodiment of the present invention in a state wherein a case is open;
- Fig. 10 is a plan view showing an electronic wristwatch according to a fourth embodiment of the present invention in a state wherein a case is open;
- Fig. 11 is a sectional view showing a main part of an electronic wristwatch according to a fifth embodiment of the present invention in a state wherein a case is closed;
- Fig. 12 is an enlarged view showing a main part of the electronic wristwatch in Fig. 11;
- Fig. 13 is a plan view showing a sheet switch, a flexible wiring board, and a seal member of the electronic wristwatch in Fig. 11;
- Fig. 14 is a sectional view taken along a line A - A in Fig. 13;
- Fig. 15 is an enlarged sectional view showing a portion enclosed within an alternately lone and dashed line B in Fig. 14;
- Fig. 16 is an exploded perspective view showing a sheet switch, a flexible wiring board, and a seal member of the electronic wristwatch in Fig. 11;
- Fig. 17 is a sectional view showing an electronic wristwatch according to a sixth embodiment of the present invention in a state wherein a case is closed;
- Fig. 18 is a sectional view showing a main part of the electronic wristwatch in Fig. 17 in a state wherein the case is half open;
- Fig. 19 is a plan view showing an electronic wristwatch according to a seventh embodiment in a state where a case is closed;
- Fig. 20 a side view of the electronic wristwatch in Fig. 19;
- Fig. 21 is a sectional view taken along a line A - A of the electronic wristwatch in Fig. 19;
- Fig. 22 is a sectional view taken along a line B - B of the electronic wristwatch in Fig. 19;
- Fig. 23 is a plan view showing the electronic wristwatch in Fig. 19 in a state wherein the case is open;
- Fig. 24 is a side view showing the electronic wristwatch in Fig. 19 in a state wherein the case is open;
- Fig. 25 is a sectional view showing a main part of an electronic wristwatch according to an eighth embodiment of the present invention in a state wherein upper and lower half cases which are coupled to each other are located at a closing position;
- Fig. 26 is a sectional view showing a main part of the electronic wristwatch in Fig. 25 in a state wherein the upper and lower half cases which are coupled to each other are located at an opening position;
- Fig. 27 is a sectional view showing a main part of the electronic wristwatch in Fig. 25 in a state wherein the upper and lower half cases are separated from each other at the opening position;
- Fig. 28 is a perspective view showing a main part of an electronic wristwatch according to a ninth embodiment of the present invention;
- Fig. 29 is a block diagram showing a circuit arrangement of the electronic wristwatch in Fig. 28;
- Fig. 30 is a plan view showing a main part of an electronic wristwatch according to a tenth embodiment of the present invention;
- Fig. 31 is a sectional view taken along a line A - A in Fig. 30;
- Fig. 32 is a plan view showing a main part of the electronic wristwatch in Fig. 30 in a state wherein a case is open;
- Fig. 33 is a plan view showing a modification of the electronic wristwatch of the tenth embodiment in a rotate wherein a case is closed;
- Fig. 34 is a plan view showing the electronic wristwatch in Fig. 33 in a state wherein the case is open;
- Fig. 35 is a plan view showing a main part of an electronic wristwatch according to an eleventh embodiment of the present invention;
- Fig. 36 is a sectional view taken along a line A - A of the electronic wristwatch in Fig. 35;
- Fig. 37 is a plan view showing a main part of the electronic wristwatch in Fig. 35 in a state wherein the case is closed;
- Fig. 38 is a sectional view taken along a line B - B in Fig. 37;
- Fig. 39 is a plan view showing an upper housing of the electronic wristwatch in Fig. 35;
- Fig. 40 is a bottom view showing the upper housing in Fig. 39;
- Fig. 41 is a bottom view showing a state wherein circuit board and the like are mounted on the upper housing in Fig. 39;
- Fig. 42 is a bottom view showing a state wherein a lower housing and the like are mounted on the upper housing in Fig. 41; and
- Fig. 43 is an exploded perspective view showing a connecting portion of the circuit board and a flexible wiring board of the electronic wristwatch in Fig. 35.
- A first embodiment of the present invention will be described below with reference to Figs. 1 to 5.
- An electronic wristwatch of the first embodiment is a multifunctional timepiece. As shown in Figs. 1A, 1B, 2A, and 2B, a
case 1 is attached to aplate 2 by usingpins 3 so as to be freely opened and closed. In this case, analog anddigital display sections case 1. Asheet switch 6 is arranged on the upper surface of theplate 2. Thesheet switch 6 and thedigital display section 5 are electrically connected to each other through aflexible wiring board 7.Watch bands 8 are respectively attached to the front and rear ends of theplate 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 andlower half cases watch glass 9 is fitted in the upper surface of theupper half case 1a through apacking 9a. Ahousing 10 in which the analog anddigital display sections case 1. The upper andlower half cases waterproof ring 11a by usingscrews 11b. Note that apush button switch 12 is arranged on the periphery of thecase 1. Thispush button switch 12 serves as not only an ON/OFF switch of a lamp for illuminating theanalog display section 4 and but also as an alarm stop switch for stopping an alarm sound. - The
analog display section 4 moveshands 13 to display time. Ahand shaft 14a of ananalog movement 14 housed in thehousing 10 protrudes upward through acenter hole 15a formed in adial plate 15 arranged on an upper portion of thehousing 10. Thehands 13 such as hour andminute hands hand shaft 14a, and thehands 13 are moved above thedial plate 15. In this case, apiezoelectric element 16 for generating an alarm sound is fixed to the lower surface of thedial 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, acircuit board 18, and the like which are housed in thehousing 10. More specifically, the liquidcrystal display panel 17 is electrically connected to thecircuit board 18 through afilm board 20 and aninterconnector 21. Thedisplay panel 17 electrooptically displays various data, e.g., time, a memo, and a schedule, and corresponds to adisplay glass 19 arranged at a predetermined position of thelower half case 1b. Thecircuit 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 thehousing 10. Note that abattery cover 22 is arranged on one side of thedisplay glass 19 in thelower half case 1b, and abattery 23 is housed inside thecover 22. - The
plate 2 is made of a metal such as stainless steel or a synthetic resin and is substantially flat. Aswitch housing recess 2a is formed in the upper surface of theplate 2.Band attaching portions plate 2. Of theseband attaching portions 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 theplate 2. The proximal end of thelower watch band 8 is placed between the pair ofportions 24, and theband 8 is attached to theseportions 24 by using thepins 3 inserted from the outside of the pair ofband attaching portions 24. A pair ofband attaching portions 25 are located at an upper position in Fig. 4 and project at positions slightly inward from the right and left ends of the upper edge of theplate 2. The proximal end of theupper watch band 8 is placed between the pair ofportions 25, and at the same time a pair of attachingportions 27 of theupper half case 1a are placed outside theseportions 25. Thecase 1 is pivotally attached to the pair ofportions 25, and at the same time thewatch band 8 is attached thereto by using thepins 3 inserted from the outside of the pair ofportions 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. Thesheet switch 6 is arranged in theswitch housing recess 2a formed in the upper surface of theplate 2. Thesheet 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. As shown in Fig. 4, 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 thesheet switch 6. A time display mode, a memo mode, a schedule mode, a telephone mode, and a calculation mode are cyclically set in anelectronic circuit 28 shown in Fig. 5 every time the mode key 6a is depressed. - The
flexible wiring board 7 electrically connects thesheet switch 6 to thecircuit board 18 of thedigital display section 5. Theboard 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 theflexible wiring board 7 is connected to thesheet switch 6. An intermediate portion of theboard 7 is located near the coupling portion of thecase 1 and theplate 2. The other end of theboard 7 is inserted in thecase 1 and connected to thecircuit board 18 on a base 26 in thehousing 10 through aninterconnector 27. Therefore, the intermediate portion of theflexible wiring board 7 is elastically bent upon an opening/closing operation of thecase 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 anddigital display sections electronic circuit 28 outputs a drive pulse to a step motor of theanalog movement 14. Upon reception of the drive pulse, the step motor is rotated. This rotation is transmitted to thehands 13 through a wheel train mechanism of theanalog movement 14 so as to rotate thehands 13. In addition, theelectronic circuit 28 receives a key input signal from thesheet switch 6. Theelectronic circuit 28 converts data based on the key input signal into a display drive signal and outputs it to the liquidcrystal display panel 17. - The
electronic circuit 28 includes anoscillating circuit 28a for generating a reference signal, afrequency dividing circuit 28b for frequency-dividing an output from thecircuit 28a to obtain one frequency-divided 1P/M signal, and amotor driving circuit 28c for generating one frequency-divided drive pulse on the basis of the 1P/M signal from thecircuit 28b and outputting it to the step motor of theanalog movement 14. - The
electronic circuit 28 further includes acontrol circuit 28d, electrically connected to thesheet switch 6, for obtaining data based on an input signal from thesheet switch 6, and adisplay driving circuit 28f for receiving the data obtained by thecircuit 28d, converting the data into a display drive signal, and supplying it to the liquidcrystal display panel 17, thereby displaying the data on thedisplay panel 17. - A method of using the electronic wristwatch having the above-described arrangement will be described below. If the
case 1 is pivoted to the closing position and is stacked on theplate 2, the watch looks like a normal analog watch, as shown in Figs. 1A and 1B. In this case, time is indicated by thehands 13, and the electronic wristwatch becomes compact in outer appearance and easy to carry. If thecase 1 is pivoted to the opening position and is separated from theplate 2, thedigital display section 5 mounted on the lower surface of thecase 1 and thesheet switch 6 mounted on theplate 2 appear, as shown in Figs. 2A, 2B, and 4. In this case, when the respective keys of thesheet key 6 are operated, predetermined data can be displayed on the liquidcrystal display panel 17 of thedigital display section 5. For example, if the mode key 6a of thesheet 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 theelectronic circuit 28. Data corresponding to a key operation in each mode is displayed on thedisplay panel 17. - As described above, in this electronic wristwatch, the analog and
digital display sections case 1. Thecase 1 is pivotally attached to theplate 2 having thesheet switch 6 on its upper surface by using thepins 3 and can be stacked thereon. Thesheet switch 6 of theplate 2 and thedigital display section 5 of thecase 1 are connected to each other through theflexible wiring board 7. With this arrangement, an increase in size of the overall watch case can be prevented, and hence a compact case can be realized. At the same time, a high-performance multifunctional watch can be realized. In addition, since the surface areas of the analog anddigital display sections sheet switch 6 do not limit each other, these areas can be set to substantially coincide with the upper and lower surfaces of thecase 1 and the upper surface of theplate 2, respectively. As a result, thedisplay sections sheet switch 6 can be improved. Especially, since thecase 1 and theplate 2 are pivotally attached to each other by using thepins 3 for attaching thewatch band 8, a structure for pivotal coupling can be simplified, and the number of parts can be reduced. Moreover, since coupling of thecase 1 and theplate 2 can be completed by only inserting thepins 3 from the outside, assembly is facilitated. - A second embodiment of the present invention will be described below with reference to Figs. 6 to 8. The same reference numerals in the second embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
- In an electronic wristwatch of the second embodiment, a
sheet switch 6 which is mounted on the upper surface of aplate 2 is pivotally attached to theplate 2. AnIC card 30 is housed at the upper surface of theplate 2 which is covered with thesheet switch 6. More specifically, a pair ofcoupling arms 31 are mounted on thesheet switch 6. Thecoupling arms 31 respectively extend along the inner sides of a pair ofband attaching portions 25 formed on the upper edge of theplate 2. The proximal end of onewatch band 8 is arranged between the pair ofcoupling arms 31 of thesheet switch 6. The pair ofcoupling arms 31 of thesheet switch 6 and the proximal end of onewatch band 8 are pivotally attached to a pair ofband attaching portions 25 by usingcommon pins 3. As shown in Fig. 7, thepins 3 are inserted from the outside of a pair ofband attaching portions 27 of thecase 1. As is clearly shown in Fig. 8, acard housing recess 32 is formed in the upper surface of theplate 2. TheIC card 30 comprising an integrated circuit chip is detachably housed in thecard housing recess 32, as shown in Fig. 7.Connecting terminals 32a (Fig. 8) are formed on the upper edge of the bottom surface of theplate 2 at equal intervals. The connectingterminals 32a are electrically connected to acircuit board 18 in thecase 1 through a flexible lead 33 (Fig. 7) in the same manner as described in the first embodiment. When theIC card 30 is housed in thecard housing recess 32,terminals 30a of theIC card 30 are connected to the connectingterminals 32a. - According to the above-described electronic wristwatch, therefore, if the
IC card 30 is housed in thecard housing recess 32 so as to cause theterminals 30a of theIC card 30 to correspond to the connectingterminals 32a of thecard housing recess 32, data can be exchanged between theIC card 30 and thedigital display section 5. With this arrangement, 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 theconnector 34 is detachably connected is mounted in a side surface of aplate 2. The connecting portion is electrically connected to adigital display section 5 through aflexible wiring board 7 which connects asheet switch 6 as described above to thedigital display section 5 of acase 1. In addition, theconnector 34 is connected to an external device through acord 36. The external device includes a wordprocessor, a personal computer, a printer, a radio pager, and the like. - According to the above electronic wristwatch, therefore, if the
connector 34 is connected to the connecting portion of theplate 2, data can be exchanged between an external device and thedigital display section 5. Similar to the second embodiment, 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 fourth embodiment of the present invention will be described below with reference to Fig. 10. Similarly, the same reference numerals in the fourth embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
- In an electronic wristwatch of the fourth embodiment, a
sheet switch 38 which is mounted on the upper surface of aplate 2 is designed to be laterally folded. Thesheet switch 38 is constituted by twokeyboards coupling members 39 so as to be freely opened and closed. Each of thekeyboards sheet switch 6 described above, and a large number of keys are arranged on each keyboard. Thekeyboards switch housing recess 2a of theplate 2 while they are stacked on each other. In this case, thekeyboard 38a which is located at a lower position is fixed in aswitch housing recess 2a and is electrically connected to adigital display section 5 of acase 1 through aflexible wiring board 7 in the same manner as in the first embodiment. - According to the above-described electronic wristwatch, the area of the
sheet switch 38 can be further increased, and hence a larger number of keys can be arranged on thesheet switch 38, thereby increasing the number of data which can be input to a circuit 28 (Fig. 5). In the fourth embodiment, thesheet switch 38 is designed to be laterally folded in two. However, thesheet 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.
- In this embodiment, a frame-
like seal member 51 having the same shape as that of a coupling portion of upper andlower half cases case 1 is formed at one end of aflexible wiring board 50 which electrically connects asheet switch 41 to acircuit board 18 in thecase 1. Theseal member 51 is clamped between the upper andlower half cases case 1. - In the
sheet switch 41 theflexible wiring board 50 and theseal member 51 are integrally formed with each other, as shown in Figs. 13 to 16. - The
sheet switch 41 is constructed by stacking aprotective sheet 42, a double-sidedadhesive tape 43 of a synthetic resin sheet on both side surfaces of which adhesive is applied, astationary contact sheet 44, aspacer 45, amovable contact sheet 46, a double-sidedadhesive tape 47 of a synthetic resin sheet on both side surfaces of which adhesive is applied, and aface sheet 48 upward in the order named. -
Frame portions portions flexible wiring board 50 are integrally formed with theprotective sheet 42, the double-sidedadhesive tape 43, thestationary contact sheet 44, thespacer 45, themovable contact sheet 46, the double-sidedadhesive tape 47, and theface sheet 48. - In addition,
protrusions protective sheet 42, the double-sidedadhesive tape 43, thestationary contact sheet 44, and themovable contact sheet 46. Theprotrusion 46c of themovable contact sheet 46 is shorter than theother protrusions - The
protective sheet 42 and theface 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 theface sheet 48. The double-sidedadhesive tape 43 functions to adhere theprotective sheet 42 and thestationary contact sheet 44 to each other, and the double-sidedadhesive tape 47 functions to adhere theface sheet 48 and themovable contact sheet 46 to each other. The stationary andmovable contact sheets stationary contacts 44d printed on the upper surface of thestationary contact sheet 44 by using carbon and a plurality ofmovable contacts 46d printed on themovable contact sheet 46 by using carbon oppose each other throughopenings 45c formed in thespacer 45. - 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. Thesheet switch 41 is waterproofed by thespacer 45 functioning to adhere thestationary contact sheet 44 and themovable contact sheet 46 to each other. - The above-described
sheet switch 41 is bonded to the upper surface of theplate 2 through a double-sidedadhesive tape 49 of a synthetic resin sheet on both side surfaces of which adhesive is applied bonded to the lower surface of theprotective sheet 42. - A plurality of
leads 44e are printed on the connectingportion 44b and theprotrusion 44c of thestationary contact sheet 44 by using carbon, as shown in Fig. 16. Thestationary contacts 44d are electrically connected to theleads 44e, respectively. In addition, a plurality ofleads 46e formed on the connectingportion 46b and theprotrusion 46c of themovable contact sheet 46 are respectively connected to theleads 44e by using a conductive adhesive agent. End portions of theleads 44e are respectively connected to terminals of acircuit board 18. With this arrangement, the stationary andmovable contacts - Waterproof double-sided
adhesive tapes 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 theseal member 51. As shown in Fig. 12, theseal member 51 is clamped between the upper andlower half cases adhesive tape 54 is bonded to the lower surface of theupper half case 55, and the other waterproof double-sidedadhesive tape 53 is bonded to the upper surface of thelower half case 56. As a result, the upper andlower half cases - In the above-described embodiment, since the
seal member 51 used for the coupling portion of the upper andlower half cases case 1 is integrally formed with theflexible wiring board 50, an independent manufacturing step for theseal member 51 is not required, and attachment of theseal member 51 to thecase 1 is facilitated. - Note that 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-sidedadhesive tapes tapes - 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.
- In the sixth embodiment, a
case 1 is attached to aplate 2 throughpins 3 so as to be freely opened and closed. Thecase 1 can be locked to a closing position by using a lock/switch mechanism 61. - The lock/
switch mechanism 61 comprises amovable member 64 which is slidably inserted in aninsertion hole 63 formed in awall portion 62 of thecase 1 located at the left side in Fig. 17. The distal end portion of themovable member 64 which extends outward from thewall portion 62 has a hemispherical shape. An engagingportion 66 constituted by a hemispherical recess is formed in awall portion 65 of theplate 2 located at the left side in Fig. 17 so as to correspond to the hemispherical end portion of themovable member 64. A flange-like stopper 67 is mounted on the proximal end portion of themovable member 64 which extends inward from thewall portion 62 of thecase 1. A movablecontact spring portion 69 which is constituted by part of apanel press plate 68 for fixing a liquidcrystal display panel 17 is arranged at a position to oppose the proximal end face of themovable member 64 in thecase 1. Astationary contact 70 is mounted on an end face of acircuit board 18 which opposes the movablecontact spring portion 69. Note that the lock/switch mechanism 61 is used to ON/OFF-control the liquidcrystal display panel 17 of adigital display section 5. While thespring portion 69 is in contact with thestationary contact 70, thedisplay panel 17 is turned off. While they are separated from each other, thedisplay panel 17 is turned on. Thepanel press plate 68 is constituted by a conductive metal plate, and is connected to a reference voltage. - In the electronic wristwatch having the above-described arrangement, when the
case 1 is moved to the closing position, the distal end portion of themovable member 64 is engaged with and urged by the engagingportion 66 of theplate 2, as shown in Fig. 17. Upon engagement of themovable member 64 with the engagingportion 66, thecase 1 is locked to theplate 2. In addition, since themovable member 64 is urged by the engagingportion 66, the movablecontact spring portion 69 is urged by the proximal end face of themovable member 64. As a result, thespring portion 69 is elastically deformed and is brought into contact with thestationary contact 70 of thecircuit board 18. In this state, supply of a drive signal from thecircuit board 18 to the liquidcrystal display panel 17 is stopped, and hence thedisplay panel 17 is set in an inoperative state. In this case, since the watch function of thecircuit board 18 continues, hands 13 of ananalog display section 4 are continuously moved. Therefore, display of time by means of theanalog display section 4 is continuously performed. - In this electronic wristwatch, when the
case 1 is moved to the opening state, engagement of the distal end portion of themovable member 64 of thecase 1 with the engagingportion 66 of theplate 2 is released, and the movablecontact spring portion 69 moves away from thestationary contact 70 of thecircuit board 18 due to its own biasing force. Since themovable member 64 is urged by thespring portion 69, thestopper 67 is brought into contact with the inner surface of thewall portion 62 of thecase 1. In this state, supply of a drive signal from thecircuit board 18 to the liquidcrystal display panel 17 is started, and thedisplay panel 17 displays data corresponding to a mode selected by a mode key of asheet switch 6. - In this electronic wristwatch, since ON/OFF control of the liquid
crystal display panel 17 of thedigital display section 5 is performed in accordance with an opening/closing operation of thecase 1, a power-saving effect can be obtained, thus prolonging the service life of a battery for driving the electronic wristwatch. - In this electronic wristwatch, since the movable
contact spring portion 69 constituted by a part of thepanel press plate 68 for fixing the liquidcrystal display panel 17 constitutes the ON/OFF switch of thedisplay panel 17 together with thestationary contact 70 of thecircuit board 18, and also serves as a spring for biasing themovable 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.
- In this embodiment, in order to obtain a sufficient alarm sound with a simple arrangement, a
piezoelectric element 72 is bonded to alower half case 71 of acase 1 which is arranged on a side opposing aplate 2, andnotches 74 for producing an alarm sound to the outside are formed in portions of a bonding surface between thecase 1 and theplate 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 thepiezoelectric element 72 is electrically connected to a sound generating circuit of acircuit board 18 through acoil spring 73, and the lower surface of theelement 72 is connected to a reference voltage through thelower half case 71 constituted by a conductive metal plate. Thenotches 74 are respectively mounted in the left and right end portions of the lower surface of theplate 2. Note that thenotches 74 may not be mounted in thecase 1 but may be mounted in theplate 2. Alternatively, thenotches 74 may be mounted at symmetrical positions of thecase 1 and theplate 2. In addition, asheet switch 6 is attached to the upper surface of theplate 2 with astationary member 75. - In this electric wristwatch, when the
case 1 is moved to a closing position, only ananalog display section 4 is exposed, as shown in Figs. 19 to 22. When thecase 1 is moved to an opening position, adigital display section 5 and thesheet switch 6 are exposed. - In addition, in this electronic wristwatch, if the
piezoelectric element 72 is operated upon reception of a drive signal from the sound generating circuit of thecircuit board 18 while thecase 1 is closed as shown in Figs. 19 to 22, thelower half case 71 to which thepiezoelectric element 72 is bonded is oscillated to generate an alarm sound. The alarm sound is then produced outside thecase 1 through the twonotches 74. - When this electronic wristwatch is attached to an arm of a user, since the
piezoelectric element 72 is not bonded to theplate 2 which is in tight contact with the arm, but is bonded to thelower half case 71 which is not in tight contact with the arm, oscillation of thelower half case 71 is not suppressed by the arm. In addition, an alarm sound generated by oscillation of thelower half case 71 is produced outside thecase 1 through the twonotches 74. Therefore, in this electronic wristwatch, a sufficient alarm sound can be obtained with a simple arrangement. Furthermore, in this electronic wristwatch, when thecase 1 is to be opened, since a user can rest his fingers on thenotches 74, thecase 1 can be easily moved from the closing position to the opening position. - An eighth embodiment of the present invention will be described below with reference to Figs. 25 to 27. The same reference numerals in the eighth embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
- In this embodiment, in order to facilitate battery replacement or maintenance, analog and
digital display sections - In the eighth embodiment, a
case 1 is constituted by upper andlower half cases screws 83, and is attached to aplate 2 so as to be freely opened and closed. Theanalog display section 4 is housed in theupper half case 81. Acover 84 is fixed to the inner surface of theupper half case 81 withscrews 85. Thedigital display section 5 is housed in thelower half case 82, and a cover is fixed to the inner surface of thelower half case 82 withscrews 87. - In this embodiment, a
battery 88 is arranged between acircuit board 18 and acover 86 at a position away from apin 89. Ananalog movement 14 of theanalog display section 4 is arranged in theupper half case 81 at a position near thepin 89. A portion of thecover 86 of thedigital display section 5 in thelower half case 82 corresponding to thebattery 88 protrudes from other portions of thecover 86. A portion of thecover 84 of theanalog display section 4 corresponding to theanalog movement 14 protrudes from other portions of thecover 84. With this arrangement, even if the upper andlower half cases screws 83, the protrusion of thecover 86 of thelower half case 82 and the protrusion of thecover 84 of theupper half case 86 do not interfere with each other. This contributes to a reduction in profile of thecase 1, and hence contributes to a reduction in profile of the electronic wristwatch. - In this electronic wristwatch, when the
case 1 consisting of the upper andlower half cases screws 83 is moved to the closing position, only theanalog display section 4 is exposed, as shown in Fig. 25. When thecase 1 is moved to the opening position, thedigital display section 4 and thesheet switch 6 are exposed, as shown in Fig. 26. - When the
battery 88 in the electronic wristwatch is to be replaced with a new one, thecase 1 is moved to the opening position, as shown in Fig. 26. As a result, thescrews 83 used to couple the upper andlower half cases screws 83 are unfastened to release coupling of the upper andlower half cases lower half case 82 is pivoted toward theplate 2, thescrews 87 used to fix thecover 86 to thelower half case 82 are exposed, as shown in Fig. 27. The exposed screws 87 are then unfastened to detach thecover 86 from thelower half case 82. As a result, thebattery 88 is exposed. When thebattery 88 is replaced with a new one, the above-described operation is performed in a reverse order. Finally, the upper andlower half cases screws 83, thus completing the battery replacement. - In this electronic wristwatch, when the
analog movement 14 is to be repaired, thescrews 83 are unfastened in the same manner as in the battery replacement procedure so as to set the wristwatch in the state shown in Fig. 27. When thecover 84 is detached from theupper half case 81 by unfastening thescrews 85 which are exposed on the inner surface of theupper half case 81, theanalog movement 14 can be exposed. Upon completion of repair of theanalog movement 14, the above-described operation is performed in a reverse order. Finally, the upper andlower half cases screws 83, thus completing the repair of theanalog movement 14. - As described above, in this electronic wristwatch, when the
battery 88 is to be replaced with a new one or theanalog movement 14 is to be repaired, the upper andlower half cases screws 83. Thereafter, thescrews cover upper half case analog movement 14 can be facilitated. - That is, in this embodiment, the analog and
digital display sections lower half cases screws 83. Therefore, if both the units are separated from each other by unfastening thescrews 83, each unit can be independently disassembled or assembled. This facilitates disassembly and assembly of thecase 1 required for battery replacement or repair of theanalog 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.
- In this embodiment, 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. When thecase 1 is moved to a closing position, the two press projections depress the two specific keys on the sheet switch. When the two specific keys are simultaneously depressed, 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 thecase 1, which is stacked on aplate 2, at positions respectively corresponding to twokeys sheet switch 91. When thecase 1 is moved to the closing position, the pair ofprojections 92 depress the twokeys 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, atimer section 100 and a display/calculation circuit 110 for receiving power from thepower source 93, a switchingtransistor 94 arranged on a power source supply line to the display/calculation circuit 110, aNAND gate 95 for supplying a gate signal to the switchingtransistor 94, asheet switch 91, and ahand driving section 120 for driving hands to display time upon reception of a signal from thetimer section 100. - In the
timer section 100, current time is obtained by causing atime counting circuit 104 to count one frequency-divided 1P/M signal obtained by frequency-diving a signal of a predetermined frequency output from anoscillating circuit 101 by using afrequency dividing circuit 102. Upon reception of the 1P/M signal, amotor driving circuit 103 outputs a drive signal to astep motor 121. - The
hand driving section 120 transmits rotation of thestep motor 121, which is driven by the output from themotor driving circuit 103, tohands 13 through awheel train mechanism 122 so as to drive thehands 13 to display time. - The
sheet switch 91 includes 20key switches 91a to 91t whose movable contacts are set at a constant voltage VDD (H level). The stationary contacts of thekey switches 91a to 91t are connected to aswitch control circuit 111. The stationary contacts of thekey switches NAND gate 95. - The display/
calculation circuit 110 includes theswitch control circuit 111, acomputer circuit 112, adisplay change circuit 113, and the above-described liquidcrystal display panel 17. Upon operation of thekey switches 91a to 91t, theswitch control circuit 111 supplies input data to thecomputer circuit 112, and at the same time supplies a display change signal d to thedisplay change circuit 113. Thecomputer circuit 112 performs a calculation on the basis of the data input from theswitch control circuit 111 and supplies the calculation result to thedisplay change circuit 113. Thedisplay change circuit 113 fetches the current time from thetime counting circuit 104 and the calculation result from thecomputer circuit 112, and supplies either of them to the liquidcrystal display panel 17 in accordance with a display change signal d from theswitch control circuit 111. Thedisplay panel 17 performs a digital display of the supplied current time or calculation result. - An operation of the ninth embodiment having the above-described arrangement will be described below.
- When the
case 1 is moved to the opening position as shown in Fig. 28, the twokey switches sheet switch 91 shown in Fig. 28 are not simultaneously depressed by the pair ofprojections 92 on the lower surface of thecase 1. That is, either of the twoswitches NAND gate 95 is always set at H level, and power is continuously supplied to the display/calculation circuit 110 through the switchingtransistor 94. As a result, current time or a calculation result from thedisplay change circuit 113 is displayed on the liquidcrystal display panel 17. - When the
case 1 is moved to the closing position, the twokey switches sheet switch 91 are simultaneously depressed by the twoprojections 92 on the lower surface of thecase 1. Referring to Fig. 29, when the twokey switches sheet switch 91 are simultaneously depressed and turned on, an output from theNAND gate 95 is set at L level, and hence the switchingtransistor 94 is set in an OFF state. As a result, since no power is supplied from thepower source 93 to the display/calculation circuit 110, the operation of display/calculation circuit 110 is stopped, and no data display is performed by the liquid crystal data displaypanel 17, thus preventing unnecessary power consumption of thepower source 93. In a small electronic device which can display addresses on the liquid crystal data displaypanel 17 in addition to current time and a calculation result, while thecase 1 is set at the opening position, addresses, for example, are displayed on thedisplay panel 17. In such a device, its circuit may be arranged such that when thecase 1 is moved to the opening position after it is moved to the closing position, current time is always displayed on thedisplay 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.
- In this embodiment, data which is displayed on a
digital display section 5 can be seen from ananalog display section 4. - As shown in Fig. 31, in this embodiment, an
opening 131a is formed in adial plate 131 of theanalog display section 4 so as to correspond to acolon display element 130 which is turned on and off at a period of one second of a liquid crystal data displaypanel 17 of thedigital display section 5.Openings housing 132 and acircuit board 133 located below thedial plate 131 so as to correspond to theopening 131a of thedial plate 131. In addition, anopening 134a is formed in a reflectingplate 134 attached to thedisplay panel 17 so as to correspond to theopenings openings dial plate 131 and thedisplay panel 17, and alens 135 is arranged in the path. With this arrangement, even while acase 1 is moved to a closing position, thecolon display element 130 displayed on thedisplay panel 17 can be seen through theopening 131a of thedial plate 131, as shown in Fig. 30. For this reason, even in a two-hand type watch without a second hand, i.e., having only hour and minute hands, it can be immediately confirmed from one-second-period turning on/off of thecolon display element 130 that the watch is operated. - Note that the
opening 131a of thedial plate 131 may be enlarged so as to allow a character or numeral display portion in the liquid crystal data displaypanel 17 to be seen through theopening 131a so that even while thecase 1 is set at the closing position, data such as a date, a schedule, or a telephone number can be seen from theanalog display section 4. - Figs. 33 and 34 show a modification of the tenth embodiment. In this modification, an
opening 136a is formed in adial plate 136 so as to correspond to a 4-digitnumeral display element 137 of a liquid crystal data displaypanel 17 of adigital display section 5. Even if acase 1 is moved to a closing position, the 4-digit display element 137 can be seen through theopening 136a of thedial plate 136. As shown in Fig. 33, even while thecase 1 is set at the closing position, a date on thedigital display section 5 can be seen. In this case, the vertical and lateral positions of thenumeral display element 137 seen from theanalog display section 4 while thecase 1 is set at the closing position are reversed with respect to those of thenumeral display element 137 seen on thedigital display section 5 while thecase 1 is set at an opening position. For this reason, aphotosensor 138 on aplate 2 detects whether thecase 1 is moved to the closing position so as to automatically change the vertical and lateral positions of each digit displayed on thenumeral display element 137. - An eleventh embodiment of the present invention will be described below with reference to Figs. 35 to 43. The same reference numerals in the eleventh embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
- In this embodiment, analog and
digital display sections case 1, and an electronic circuit is arranged in thecase 1. Thecase 1 is fixed to the 3- or 9-o'clock side of aplate 2 so as to be freely opened and closed. Asheet switch 6 is mounted on the upper surface of theplate 2. Similar to the above-described embodiments, thesheet switch 6 of theplate 2 and the electronic circuit are electrically connected to each other through aflexible wiring board 7 which extends at a coupling portion between theplate 2 and thecase 1. Therefore, a structure for electrically connecting thesheet switch 6 of theplate 2 to the electronic circuit of thecase 1 can be simplified. - In this electronic timepiece, the
case 1 is attached to the 9-o'clock side of theplate 2 through apin 140 so as to be freely opened and closed. Thecase 1 can be locked to a closing position by using a lock mechanism (not shown). - When the
case 1 is set at the closing position, only theanalog display section 4 is exposed, as shown in Figs. 37 and 38. When thecase 1 is set at an opening position, thedigital display section 5 and thesheet switch 6 are exposed, as shown in Figs. 35 and 36. - Figs. 39 and 40 respectively show the upper and lower surfaces of an
upper housing 141 housed in thecase 1. - An analog
movement housing opening 142 is formed in a central portion of theupper housing 141. An analog movement comprising astep motor 143 and awheel train mechanism 144 is housed in the analogmovement housing opening 142. A quartzoscillator housing opening 145 and abattery housing opening 146 are formed in the lower surface of theupper housing 141 at the 12-o'clock side. A negativebattery electrode plate 147 is mounted in thebattery housing opening 146. - A flexible wiring
board connecting recess 148 is formed in the lower surface of theupper housing 141 at the 9-o'clock side (right side in Fig. 40), as shown in Fig. 43. A linear rubbermember housing recess 149 is formed in the flexible wiringboard connecting recess 148. Arubber member 150 is housed in the rubbermember housing recess 149 so as to partially protrude therefrom. In the flexible wiringboard connecting recess 148, screw holes 152 respectively formed atsupports 151 embedded in theupper housing 141 are exposed at both the sides of the rubbermember housing recess 149. Positioningbosses 153 are respectively formed near the screw holes 152 in the flexible wiringboard connecting recess 148. Positioning holes 154 which are formed in one end portion of theflexible wiring board 7 forcibly fit in these positioningbosses 153. One end portion of theflexible wiring board 7 is fixed in the flexible wiringboard connecting recess 148 while being in contact with the protrusion surface of therubber member 150. A plurality of connectingelements 155 are mounted on the upper surface of theflexible wiring board 7 at a portion corresponding to therubber member 150 in Fig. 43. Two screw insertion holes 156 are formed in theflexible wiring board 7 at positions corresponding to the screw holes 152 of therecess 148, respectively. An insulatingsheet 157 is bonded to theflexible wiring board 7 except for one end portion described above. - Fig. 41 shows a state wherein a
circuit board 18 is mounted in theupper housing 141. - The
circuit board 18 is arranged on the lower surface of theupper housing 141 in such a manner that positioning holes 158 (partially shown in Fig. 43) formed at four predetermined positions of thecircuit board 18 respectively forcibly fit overpositioning bosses 159 formed at two predetermined positions on the lower surface of theupper housing 141 and the above-describedpositioning bosses 153 of theflexible wiring board 7. In this state, aquartz oscillator 160 mounted on the upper surface (lower surface in Fig. 41) of thecircuit board 18 is housed in the quartzoscillator housing opening 145 of theupper housing 141. AnLSI 161 is arranged at a predetermined position on the lower surface (upper surface in Fig. 41) of thecircuit board 18. Two groups of liquid crystal data displaypanel connecting terminals 162 respectively form lateral arrays at the 12- and 6-o'clock sides of theLSI 161. These connectingterminal groups 162 are electrically connected to theLSI 161 through leads (not shown). - Through
holes 163 are formed at a plurality of positions of thecircuit board 18 at the 9-o'clock side (right in Fig. 41) of theLSI 161. Through-hole connected throughhole terminals 164 are respectively formed around both the ends of each of these throughholes 163. The throughhole terminals 164 on the lower surface (upper surface in Fig. 41) of thecircuit board 18 are electrically connected to theLSI 161 through leads 165. The throughhole terminals 164 on the upper surface (lower surface in Fig. 41) of thecircuit board 18 are electrically connected to flexible wiringboard connecting terminals 167 of thecircuit board 18 throughleads 166, respectively. - Screw insertion holes 168 (see Fig. 43) are formed in the
circuit board 18 at positions corresponding to the twoscrew holes 152 in the flexible wiringboard connecting recess 148 of theupper housing 141. Ametal reinforcing plate 170 is arranged at a predetermined position on the lower surface (upper surface in Figs. 41 and 43) of thecircuit board 18. Twopositioning holes 171 are formed in the reinforcingplate 170 at positions respectively corresponding to the two positioning bosses in the flexible wiringboard connecting recess 148 of theupper housing 141. In addition, screw insertion holes 173 are formed in the reinforcingplate 170 at positions respectively corresponding to the twoscrew holes 152 in therecess 148. The reinforcingplate 70 is fixed to theupper housing 141 in such a manner that the twopositioning holes 171 forcibly fit over the two positioning bosses in therecess 148 of theupper housing 141, and screws 174 are then threadably engaged with the screw holes 152 in therecess 148 of theupper housing 141 through the screw insertion holes 173, 168 and 156 of the reinforcingplate 170, thecircuit board 18, and theflexible wiring board 7, respectively. In this state, the connectingterminals 155 of theflexible wiring board 7 are urged by the connectingterminals 167 of thecircuit board 18 due to the repulsive force of the properly compressedrubber member 150, so that theterminals - Fig. 42 shows a state wherein a
lower housing 175 is attached to theupper housing 141. - The
lower housing 175 is urged against thecircuit board 18 by asupport plate 178 which is fixed to theupper housing 141 withhook mechanisms 176 and screws 177. Thelower housing 175 is arranged on the lower surface (upper surface in Fig. 42) of thecircuit board 18 such that positioning holes 179 (some of them are not shown) formed at four predetermined positions of thelower housing 175 receive thepositioning bosses upper housing 141 in the same manner as that of thecircuit board 18. Thesupport plate 178 is fixed to theupper housing 141 with thehook mechanisms 176 and thescrews 177 while positioning holes 180 formed at two predetermined positions of thesupport plate 178 receive thepositioning bosses upper housing 141. Abattery 23 is housed in thebattery housing opening 146 of theupper housing 141 while thebattery 23 is urged by abattery press plate 181. Thebattery 23 is electrically connected to thecircuit board 18 through the above-described negative battery electrode plate 147 (see Fig. 41) and a positivebattery electrode plate 182 integrally formed with thesupport plate 178. - Two groups of connecting terminals (not shown) 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 thelower housing 175 so as to oppose the two groups of liquid crystal data displaypanel connecting terminals 162 of thecircuit board 18. The two groups of connecting terminals (not shown) of thedisplay panel 17 and the two groups of connecting terminals of thecircuit board 18 are electrically connected to each other through a rectangular parallel-piped interconnector (not shown). - As has been described above, in this electronic wristwatch, the
case 1 is attached to the 9-o'clock side of theplate 2 through thehinge pin 140 so as to be freely opened and closed, and theflexible wiring board 7 extends at the coupling portion between thecase 1 and theplate 2. With this arrangement, since the flexible wiringboard connecting terminals 167 are mounted at the 9-o'clock side of thecircuit board 18, thewiring patterns terminals 167 to theLSI 161 can be formed without interference with the liquid crystal data displaypanel connecting terminals 162 and electronic parts such as thebattery 23 and thequartz oscillator 160. As a result, thecircuit board 18 can be reduced in size, and wiring patterns can be easily formed. - In the above-described embodiment, the
case 1 is attached to the 9-o'clock side of theplate 2 so as to be freely opened and closed. However, the present invention is not limited to this. For example, thecase 1 can be attached to the 3-o'clock side of theplate 2.
Claims (34)
a switch input section (6) for data input;
an analog time display unit (4) for displaying time with hands (13);
an electrooptic data display unit (17) for displaying data; and
an electronic circuit (28) for driving said analog time display unit (4), said electronic circuit being electrically connected to said switch input section (6) so as to cause said electrooptic data display unit (17) to display data input from said switch input section (6), characterized in that
said switch input section (6) is mounted on an upper surface of a plate member (2),
a case member (1) is attached to one end of said plate member (2) so as to be freely opened and closed,
said analog time display unit (4) and said electrooptic data display unit (17) are respectively housed in said case member (1) at upper and lower surfaces thereof, and
said electronic circuit (28) is housed in said case member (1).
said case member (1) comprises an upper half case (55) and a lower half case (56), and
one end of said sheet switch (41) extends between said upper half case (55) and said lower half case (56) and is inserted in said case member (1) so as to be connected to said electronic circuit (28), while a frame-like seal portion (51) is integrally formed with said sheet switch (41), said frame-like seal portion having substantially the same shape as that of a coupling portion of said upper half case (55) and said lower half case (56) and being clamped therebetween.
said case member (1) comprises upper and lower half cases (71), and
a display window (19) for exposing said electrooptic data display unit (17) is mounted on said lower half case (71), and a piezoelectric element (72) for vibrating said lower half case to produce an alarm sound is attached thereto.
a plurality of projections (92) are mounted on a surface of said case member (1) which opposes said plate member when said case member is set at a closing position, said projections simultaneously depressing a plurality of specific keys of said switch input section (91) of said plate member when said case member (1) is set at the closing position, and
said electronic circuit comprises detecting means (95) for detecting depression of said plurality of specific keys and detecting that said case member is set at the closing position, and display control means (94) for causing said electrooptic data display unit (17) to stop display of data when sa d detecting means detects that said case member is set at the closing position.
a keyboard (6) constituted by a large number of keys for data input;
an analog time display unit (4) for displaying time with hands (13); and
an electrooptic data display unit (17) for displaying data input from said keyboard (6), characterized in that
said keyboard (6) is mounted on an upper surface of a key input unit (2) having both ends to which bands (8) are attached,
a case member (1) is attached to one end of said key input unit (2) so as to be freely opened and closed, and
said analog time display unit (4) and said electrooptic data display unit (17) are respectively housed in said case member (1) at upper and lower surfaces thereof.
said case member (1) comprises an upper half case (55) and a lower half case (56),
an electronic circuit (28) is housed in said case member (1), said electronic circuit being adapted to drive said analog time display unit (4) and being electrically connected to said keyboard (6) of said key input unit (2) so as to cause said electrooptic data display unit (17) to display data input from said keyboard (6),
said keyboard (6) of said key input unit is constituted by a sheet switch (41), and
one end of said sheet switch (41) extends between said upper half case (55) and said lower half case (56) and is inserted in said case member (1) so as to be connected to said electronic circuit (28), while a frame-like seal portion (51) is integrally formed with said sheet switch (41), said frame-like seal portion having substantially the same shape as that of a coupling portion of said upper half case (55) and said lower half case (56) and being clamped therebetween.
said case member (1) comprises upper and lower half cases (71), and
a display window (19) for exposing said electrooptic data display unit (17) is formed on said lower half case (71), and a piezoelectric element (72) for vibrating said lower half case to produce an alarm sound is attached thereto.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP226576/88 | 1988-09-12 | ||
JP63226576A JPH0275992A (en) | 1988-09-12 | 1988-09-12 | Electronic watch |
JP30794/88U | 1989-03-20 | ||
JP3079489U JPH02122394U (en) | 1989-03-20 | 1989-03-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0359181A2 true EP0359181A2 (en) | 1990-03-21 |
EP0359181A3 EP0359181A3 (en) | 1992-01-02 |
EP0359181B1 EP0359181B1 (en) | 1993-12-01 |
Family
ID=26369208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890116793 Expired - Lifetime EP0359181B1 (en) | 1988-09-12 | 1989-09-11 | Electronic timepiece with analog time display unit and electrooptic data display unit |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0359181B1 (en) |
DE (1) | DE68911075T2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1070997A1 (en) * | 1999-07-22 | 2001-01-24 | The Swatch Group Management Services AG | Reversible wrist-watch |
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 (en) * | 2020-08-18 | 2022-02-23 | The Swatch Group Research and Development Ltd | Watch case provided with a trim component |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2502583A1 (en) * | 1975-01-23 | 1976-07-29 | Bertram Dipl Ing Botsch | Wrist watch type electronic digital calculator - miniaturised keyboard lays against wrist with hinged cover having display on inside |
EP0022255A1 (en) * | 1979-07-06 | 1981-01-14 | Societe Suisse Pour L'industrie Horlogere Management Services S.A. | Electronic wristwatch comprising two different displays |
JPS57182686A (en) * | 1981-05-07 | 1982-11-10 | Citizen Watch Co Ltd | Portable electronic device |
-
1989
- 1989-09-11 EP EP19890116793 patent/EP0359181B1/en not_active Expired - Lifetime
- 1989-09-11 DE DE1989611075 patent/DE68911075T2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2502583A1 (en) * | 1975-01-23 | 1976-07-29 | Bertram Dipl Ing Botsch | Wrist watch type electronic digital calculator - miniaturised keyboard lays against wrist with hinged cover having display on inside |
EP0022255A1 (en) * | 1979-07-06 | 1981-01-14 | Societe Suisse Pour L'industrie Horlogere Management Services S.A. | Electronic wristwatch comprising two different displays |
JPS57182686A (en) * | 1981-05-07 | 1982-11-10 | Citizen Watch Co Ltd | Portable electronic device |
Non-Patent Citations (1)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6580479B1 (en) * | 1997-07-18 | 2003-06-17 | Citizen Watch Co., Ltd. | Timepiece |
EP1070997A1 (en) * | 1999-07-22 | 2001-01-24 | The Swatch Group Management Services AG | Reversible wrist-watch |
WO2001007970A1 (en) | 1999-07-22 | 2001-02-01 | The Swatch Group Management Services Ag | Reversible wrist watch |
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 (en) * | 2020-08-18 | 2022-02-23 | The Swatch Group Research and Development Ltd | Watch case provided with a trim component |
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 |
---|---|
EP0359181A3 (en) | 1992-01-02 |
DE68911075T2 (en) | 1994-03-17 |
EP0359181B1 (en) | 1993-12-01 |
DE68911075D1 (en) | 1994-01-13 |
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