JPS59122992A - Electronic time piece - Google Patents

Abstract

PURPOSE:To attain to reduce the thickness, size and cost of the titled time piece, by providing a time piece holding wheel and a min hand holding wheel arranged at the center of the time piece and an auxiliary hand holding wheel arranged at a position shifted from the center of the time piece. CONSTITUTION:A hr wheel 11 is meshed with a minute wheel pinion, supported by the shaft of a center wheel and has a hr hand at the leading end thereof. On the other hand, a sec wheel 12 consists of a gear meshed with a fifth wheel pinion and a core while holds a sec hand at the leading end of the core and is arranged on the strait line drawing from the center of a clock to a six o'clock direction. In this case, because a quartz vibrator 57 is arranged in almost parallel to a coil block A28, a flat space can be effectively utilized. Mos-Ic56 is arranged so as not to be flatly superposed to a train wheel bridge 15 while flatly superposed to the sec wheel to cross-sectionaly provide a gap. This inventive time piece has the above mentioned structure and the reduction of the thickness, size and cost of the time piece can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic timepiece having a plurality of step motors that independently drive a hand displaying a normal time and a hand displaying a time other than the normal time. The purpose of this invention is to make it possible to display various types of time on a watch, and also to make the watch thinner, smaller, and cheaper, and further improve its quality.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained in detail with reference to FIGS. 1 to 8 showing one embodiment.

1 is a base plate, and 2 is a battery. 3 is an integrated data block A made of a high magnetic permeability material, 4 is a magnetic core A made of a high magnetic permeability material, a coil wound around the core part of the magnetic core, a coil lead board whose ends are terminal-treated to enable conduction, a spacer, and a coil. Coil blocks A and 5 made up of frames are rotor A made up of a pinion, a permanent magnet, and a seat. 6 is the fifth wheel consisting of the fifth gear and pinion that meshes with the rotor pinion, 7 is the fourth wheel consisting of the fourth gear and pinion that meshes with the fifth pinion, and 8 is the third pinion that meshes with the fourth pinion. The fifth wheel consists of a pinion, 9 is the second gear that meshes with the third pinion, and the pinion and gear have arbitrary sliding torque, and the fifth wheel holds the minute hand at the tip of the pinion. 11 is the hour wheel with a pinion and a pinion gear, 11 is the hour wheel that meshes with the pinion, is supported by the fifth wheel 9, and holds the hour hand at the tip, and 12 is the fifth wheel. It consists of gears and a stem that mesh with each other, and the second wheel has a second hand at the tip of the stem, and is placed on a straight line drawn from the center of the watch in the direction of 6 o'clock. Rotor A5
The deceleration ratio of the seconds wheel 12 is set to 1/30. 13 is an intermediate wheel that meshes with the sun wheel 10, and 14 is a small iron wheel.

15 is a gear train bridge with 9 legs 16, 17, and 18 planted on the base plate 1.
and is fixed to the base plate 1 with screws. The wheels other than the above-mentioned hour wheel 11 and small iron wheel 14 are supported on the main plate 1 at the lower end and by a train wheel bridge 15 at the upper end. The hour hand, minute hand, and second hand normally display the time, and the center wheel 9 and hour wheel 11 are placed at the center of the clock. In addition, the stator A3, coil block A4, and rotor A5 are the well-known step motor motors, MOB-I C5, 6, 11Hg.
This is an hour, minute, and second motor that rotates in response to electrical signals.

19 is an integrated stator made of a high magnetic permeability material B120 is made up of a magnetic core B made of a high magnetic permeability material, a coil wound around the circumference of the magnetic core, a coil lead board whose ends are terminal-treated to enable conduction, a spacer, and a coil frame. Configured coil block B
(The coil lead board, spacer, and coil frame are common to those forming the coil block A3.) 21 is the rotor A. These are also collectively called minute CG (abbreviation for chronograph) motors, and are MOS-C56 (f) 1/60 Hz.
It is a step motor that rotates in response to an electrical signal. 2
21d A minute CG intermediate wheel that meshes with the pinion of rotor A21, a minute CG intermediate wheel consisting of an intermediate gear and a pinion, 23 is a minute CG intermediate wheel that meshes with the pinion of the intermediate wheel 22, and a minute CG gear that meshes with the pinion of the rotor A21.
A minute CG wheel holding hands, placed on a straight line drawn from the center of the clock in the direction of 9 o'clock, and rotor A21 and minute CG wheel 23.
The reduction ratio is set to IA5. 24 is a minute CG reception,
The nine feet 25 and 26 planted on the base plate 1 are positioned and fixed to the base plate 1 with screws. Rotor A
21, a minute CG intermediate wheel 222, and a minute CG wheel 23 are supported on the main plate 1 at the lower end and on the minute CG receiver 24 at the upper end.

27 is an integrated stator made of a high magnetic permeability material C128 is a coil block A (common with coil block A4), 29 is a rotor B consisting of a pinion and a permanent magnet (common with rotor A5)
These are collectively called second CG momes, and MOS
-Eng.056F) This is a step motor that rotates in response to an IHz electrical signal. 30 is a second CG intermediate wheel consisting of a second CG intermediate gear and a pinion meshing with the rotor B29; 31
The second CG wheel is made up of a second CG gear that meshes with the second CG intermediate wheel 30, and has a second CG hand at the tip of the second CG wheel, which is located at the center of the time, and rotor B29 and second CG wheel 31. The reduction ratio is set to ]/31J[. 32 is Bush 35
9 feet 33, 18 planted on the main plate 1 with a second CG receiver integrated with the
．． 26, and is fixed to the base plate 1 by screws. The rotor B29 and the second CG intermediate wheel 30 are supported on the main plate 1 at the lower end and the second CG bridge 32 at the upper end. Reference numeral 34 is a second CG wheel spring that holds down the upper end of the second Ca wheel 31. Puppyu 35 has 9 pairs of 18 parts and a gear train holder of 15.9 pairs of 26 parts and a minute CG holder of 24.9 legs and 33 parts of 5.
Holding down CG receiver 41 for 700 seconds.

36 is a stator B, and 37 is a coil block B.

38 is rotor A. These are collectively called 5AO seconds CG
It is called a motor and has the same components as the minute CG motor.

Also, it is a step motor that rotates upon receiving a 20Hz electric signal from the MOS-C56.

39 is a 5700 second CG intermediate gear consisting of a 5700 second CG intermediate gear and pinion that meshes with the rotor A3B pinion, 40 is a 57
It consists of a 5A00 second CG gear and a stem that mesh with the hub of the 00 second CG intermediate wheel, and the 5700 second CG hand is held at the tip of the true.
/ (A 10 second CG car, placed on a straight line drawn from the center of the clock in the 3 o'clock direction, and rotor A38 and 5/IIQ second CG
The reduction ratio of the car 40 is set to IAO. 41 is 570
It is positioned on nine legs 42 and 33 planted on the base plate 1 with a 0 second CG receiver, and is fixed to the base plate 1 with screws. Rotor A38 and 5100 seconds CG intermediate wheel 39 and 5100
The second CG car 40 has the lower phase on the main plate 1, 57f00\second CG
The upper part is supported by a bearing 41.

The second hand, minute CG hand, and 5AO second CG hand described above are collectively referred to as the sub-hand.

Since the gear train bridge 15, minute CG bridge 24, and 5700 second CG bridge 41 are arranged at the same position in cross section, the second hand and minute CG bridge
ii, second wheel 1 holding the 5/f00 second CG hand, respectively
2, minute ca car 23, 5/(1 (true linkage of 1 second CG car 40, relatively high cost rotor A5.21°38
This makes it possible to standardize the components, thereby reducing costs through mass production. 9 legs 18, 26, 33 are each gear train bridge 152 minutes CG
9 of 24, 5/100 second CG receiver 41 and second CG receiver 32
Since the legs are shared, the flat space can be reduced.

Coil blocks A4 and 28 and coil block B 2'
0 and 37 are made by aligning the direction of the tail with the 12 o'clock and 6 o'clock directions of the clock (it is impossible to match the directions of three or more tails without using the arrangement described later). This improves the appearance of the movement, reduces the number of inspection steps because the weakest magnetically resistant direction of each motor can be made almost the same, and furthermore allows the watch to be made more compact because the magnetically resistant structure can only be provided in the weakest direction.

Minute CG motor, 5700 second CG motor each minute CG car 2
3. The center of rotation of the s7'roo second CG wheel 40 is also placed outside the clock body, and the indicating wheel train (minute CG wheel 24°510
By forming a block with the minute CG receiver 24.5700 seconds CtG receiver 41 (including the 0 second CC receiver 41), the minute CG receiver 24.5700 seconds CtG receiver 41 can be arranged so that it does not overlap with the gear train bridge 15, allowing the watch to be made thinner and the indicator wheel By changing the reduction ratio without changing the center distance of the row, it can be applied to a variety of applications such as alarms and car lanters. Furthermore, between the minute CG motor and the 5700 second CG motor, there is an hour/minute/second motor and a second CG.
By arranging the motors approximately vertically, it is possible to arrange the four motors in almost the same direction, and it is also possible to set a distance (minimum gap between motors of 0.3 to 1 degree) so that each motor is not affected by each other. It is also possible to make the watch body smaller.
The second CG wheel 31 is inserted between the train wheel bridge 15 and the seconds CG receiver 32 by penetrating the second type 9 of the wheel train that transmits the output of the seconds motor, thereby displaying the normal time at the center of the clock. The hour hand, minute hand, and second CG hand can be arranged.

43 is the winding stem, 44 is the winding wheel connected to the winding stem 43, 45
Reference numeral 46 indicates a changeover switch lever that follows the operation of the return switch 45 and works with the pattern on the circuit board to determine the state of the watch. Reference numeral 47 indicates a bolt, and reference numeral 48 indicates a bolt presser foot, a switching mechanism. It consists of The state shown in Figure 1 is when the watch is being carried, and when the winding stem 43 is pulled out one step, each CG
The hands are in the corrected state, and when the hands are pulled out one more step, they are set to the normal time, and when the winding stem 43 is pushed in, the hands are returned to the carrying state.

This switching mechanism is designed so that it does not become chaotic on a plane with each motor.
Moreover, the winding stem 43 is the seconds wheel 121 minutes CA car 23.5AO seconds C
Planar (non-overlapping position) with the G car (8 o'clock position in the example)
By arranging it in the middle, we are trying to make the watch thinner.

Reference numeral 49 denotes a switch lever, which is formed with a 0-shaped spring and four parts at its tip, and is mounted on the main plate (l). When the button is not pushed in, a clicking feeling is produced, and the back of the button contacts the bottle 53 (described later), turning on the switch.
When the pushing force on the button 52 is released, the zero-shaped spring returns it to its original position, and the switch OB'F is activated (the bottle 53 and the switch lever 49 are separated). This switch mechanism is placed at approximately 2 o'clock, 4 o'clock, and when the clock is in use.The minute Ca motor is placed between the winding stem 43 and the switch mechanism placed at 10 o'clock. Since it is placed between the switch mechanisms located at 2 o'clock and 4 o'clock, the planar space of the watch can be used effectively and the watch can be made thinner.

54 is a circuit seat molded from synthetic resin, which holds the battery 2 and the base plate 1.
It has a short-circuit prevention function and a holding function for the switch lever 49, and in plan view, it has a gear train bridge, 1'5', and a minute CG bridge 24, 5.
AO second CG reception 41. The coil blocks A4 and B20 and the coil blocks B20 and 37 can be disassembled even when the circuit seat 54 is assembled in the base plate 1. Further, the bin 53 is pushed into the circuit seat 54 and is fixed, and corresponds to each switch lever.

55 is a circuit board, MOE-C56 and crystal resonator 57
is fixed to the reed, and electrical continuity is established through the pattern to the coil block, the bottle 53, both poles of the battery 20, the selector switch lever (not in contact with the pattern when carried), the crystal oscillator, etc. The circuit board 55 is the battery 2 and the second CG
Uke 32. It has a planar shape that escapes the coil blocks A and B, and is placed on the gear train bridge 152 minute CG bridge 24 and 5/100 second CG bridge 41 (on the opposite side to the main plate 1) in cross section. A magnetic shield plate 58, which is almost the same as the circuit board 55, is arranged and fixed to the main plate 1 with a plurality of screws. Therefore, the circuit board 55 can be relatively large in plan, and each pattern can be freely routed, so that the pattern of the circuit board 55 (formed on the base plate 1 side) and metal parts such as the gear train bridge 15 can be In order to prevent short-circuits, it is possible to provide holes for checking the operation of each gear train in the active state. Further, since the crystal oscillator 57 is arranged substantially parallel to the coil block A28, the planar space can be effectively utilized, and the watch can be made smaller. Further, the anti-magnetic plate 58 has the name and abbreviation of each motor marked on a plane facing each motor, thereby making it possible to identify the installation position of the motor for after-sales service.

The MOS C56 (shape including molding agent) is arranged so as not to overlap with the train wheel bridge 15 in a plane, and overlaps with the second wheel 12 in a plane with a gap in cross section. This arrangement allows the watch to be made thinner and smaller.

The present invention has the above-described structure, and allows a watch with a plurality of step motors to be made thinner, smaller, and lower in cost, as well as to prevent short circuits and to enable operation confirmation through training holes in the gear train, thereby improving quality. Furthermore, after-sales service can be improved by marking the anti-magnetic plate.

In the present invention, the minute CG, second CG, 510o second CG motor and its indicating gear train have been explained, but each sub hand is replaced by the hour CG hand and the 510o second CG motor.
If it is displayed instead of the date, day of the week, alarm pointer, etc., it can be used in a wide range of applications. Also, although the second CG hand is used as the center of the clock, it may be replaced with the second hand.

(In that case, replace the hour Φ minute/second motor and the second CG motor.) Furthermore, the position of the CG hand does not have to be limited to the position described in the present invention; for example, the watch can be rotated at any angle. You can enrich your design buffet.

In the case of a watch that uses many wheels of similar shape, such as gears that transmit the output from each motor, the wheels should be numbered so that each wheel can be identified and where it is installed, and the number should be placed on the main plate or before each wheel. It is also possible to improve assembly efficiency by attaching a number corresponding to the vehicle number to the part to be assembled near the assembly part.

Each motor in the present invention has been described as an integrated step motor, but the same applies to a two-piece stator, and each CG hand has a date and a day. Month. Year. Morning Afternoon. Alternatively, alarm time, dual time, etc. can be displayed, and there are letters on the disc as well as a pointer display. numbers. It can also be applied to displaying pictures etc. through the window of the dial board.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention. 2 to 8 are cross-sectional views of FIG. 1. 1. Main plate 2.Battery 3.Stator A 4.28--Coil block A5
, 21, ;38! Meeting rotor A ~291II
IO-ta B 6..5th wheel 7..4th wheel & pinion 8.3rd wheel & pinion 9..2nd wheel & pinion 11..hour wheel 12..seconds wheel 15..train bridge 22..minute CG intermediate Car O... Minute CG car Sae... Minute CG receiver 30... Second CG Intermediate car 31... Second CG car 32... Second C
G receiver 39@・5100 seconds CG intermediate wheel 40・-5
700 seconds CG car 41...5100 seconds CG receiver 19, 3
6-.Stator B 20, 37..Coil block B 29..Rotor B 27.Stator C35.-
Bush 43/Φ winding stem 56e vMos * IC'57* r crystal oscillator 4
9. Switch lever 58...Magnetic plate lock...Circuit catch 55 circuit board and above

Claims (1)

[Claims] A clock holder wheel and a minute hand holder wheel located at the center of the clock, an auxiliary hand holder wheel located away from the center of the clock, a 10th machine frame bearing one handle of the minute hand holder wheel, and a 1st a 20th machine frame bearing one handle of the auxiliary needle wheel, which does not overlap with the 0 machine frame in plan view and is arranged in approximately the same cross section as the 20th machine frame;
An electronic timepiece comprising a circuit board placed on the first and twentieth machine frames.