JPH0110630Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an electronic timepiece having multiple step motors that independently drive the hands that display the normal time and the hands that display the time other than the normal time. The purpose of this invention is to make it possible to display various types of time, and to make the watches thinner, smaller, and cheaper, and further improve their quality.

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

1 is a base plate, and 2 is a battery. 3 is an integrated stator 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 both ends are terminal-treated to enable conduction, a spacer, and a coil. Coil block A consists of a frame, and rotor A consists of a 5-pin, permanent magnet, and seat.
It is. 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 third wheel consists of a pinion, 9 consists of a second gear that meshes with the third pinion, the pinion and gear have arbitrary sliding torque, the second wheel holds the minute hand at the tip of the pinion, and the number 10 is the second pinion. 11 is the hour wheel with an engaging gear and a pinion, 11 is an hour wheel that engages with the rear pinion, is supported by the second wheel 9, and holds an hour hand at the tip, 12 is engaged with the fifth pinion. The second wheel consists of matching gears and a stem, with a second hand held at the tip of the stem, and is placed on a straight line drawn from the center of the clock in the direction of 6 o'clock.
The reduction ratio of the rotor A5 and the second wheel 12 is set to 1/30. 13 is an intermediate wheel that meshes with the sun wheel 10, 1
4 is a small railway car. Reference numeral 15 is a gear train bridge that is positioned on support legs 16, 17, and 18 planted on the base plate 1, and is fixed to the base plate 1 with screws. For cars other than the above-mentioned hour wheel 11 and small iron car 14, the lower handle is attached to the main plate 1.
The upper handle is supported by a train wheel bridge 15.
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.
Furthermore, the stator A3, coil block A4, and rotor A5 are well-known step motors with MOS-IC56
It is an hours:minutes:seconds motor that rotates by receiving a 1Hz electrical signal.

19 is an integral stator B made of a high magnetic permeability material;
20 is a coil block B (coil lead board,
The spacer and coil frame are the same as those constituting the coil block A4), and 21 is the rotor A. These motors are collectively called minute CG (abbreviation for chronograph) motors, and are step motors that rotate in response to a 1/60 Hz electrical signal from the MOS-IC 56. 22
is the minute CG intermediate wheel consisting of the minute CG intermediate gear and pinion that meshes with the rotor A21, and 23 is the minute CG intermediate wheel 2.
The minute CG wheel is made up of a minute CG gear and a stem that mesh with the second pinion, and the minute CG wheel holds the minute CG hand at the tip of the true. The reduction ratio of the CG car 23 is set to 1/15. Reference numeral 24 denotes a minute CG support, which is positioned on support legs 25 and 26 planted on the base plate 1 and fixed to the base plate 1 with screws. The rotor A21, the minute CG intermediate wheel 22, and the minute CG wheel 23 are attached to the main plate 1 with a lower handle.
The upper handle is supported by the minute CG receiver 24.

27 is an integral stator C made of a high magnetic permeability material;
28 is a coil block A (common with the coil block A4), 29 is a rotor B consisting of a pinion and a permanent magnet (common with the rotor A5), and these are collectively called the second CG motor. It is a step motor that rotates in response to a signal (a signal different from the electrical signal that drives the hour, minute, and second motor). 30 is the second CG that meshes with the rotor B29.
Seconds CG intermediate wheel consisting of an intermediate gear, 31 is seconds
The second CG wheel consists of a second CG gear and a stem that mesh with the CG intermediate wheel 30, and the second CG wheel holds a second CG hand at the tip of the true.
Placed in the center of the clock, and rotor B29 and second CG
The reduction ratio of car 31 is set to 1/30. Second CG
The gear is formed to have a larger diameter than the second gear. seconds
The larger the diameter of the CG gear, the less the impact of bumps in the gear on the pointer display. In this embodiment, the second wheel & pinion 9, the third wheel & pinion 8 that engages therewith, and the day wheel & pinion wheel 10 of the wheel train that normally drives the pointer are supported by a train wheel bridge 15, and the seconds CG gear is placed above them. As a result, the diameter of the second CG gear could be made sufficiently large. 32 is a second CG receiver that is integrated with the bushing 35, and the bushings 33, 18,
26, and is fixed to the base plate 1 with screws. The rotor B29 and the second CG intermediate wheel 30 have their lower handles supported on the main plate 1 and their upper handles on the seconds CG bridge 32, and the seconds CG wheel 31 has their upper handles supported on the seconds CG receiver 32 and their lower handles on the center wheel and pinion 9. There is. 34 is a second CG wheel spring that presses down the tip of the upper handle of the second CG wheel 31.
Bushu 35 is 15 for the gear train for the 18th leg, 24 minutes for the 26th leg, and 5/100 seconds for the 33rd leg.
Holding down CG receiver 41.

36 is stator B, 37 is coil block B,
38 is rotor A. These are collectively called 5/100
It is called a second CG motor and has the same components as the minute CG motor. It is also a step motor that rotates upon receiving a 20Hz electrical signal from the MOS-IC56. 39 is a 5/100 second CG intermediate gear consisting of a 5/100 second CG intermediate gear that meshes with the rotor A38, and 40 is a 5/100 second CG intermediate gear.
It consists of a 5/100 second CG gear and a stem that mesh with the second CG intermediate wheel, and the 5/100 second CG hand is held at the tip of the true.
A 100 second CG car, placed on a straight line drawn from the center of the clock towards 3 o'clock, and rotor A38 and 5/100 second CG.
The reduction ratio of the car 40 is set to 1/10. 41 is the support foot 42, 33 planted on the base plate 1 with 5/100 second CG support.
and is fixed to the base plate 1 with screws. Rotor A38, 5/100 second CG intermediate wheel 39 and 5/100 second CG wheel 40 have a lower handle on the main plate 1, 5/10
The upper handle is supported by the 0 second CG receiver 41.

The second hand, minute CG hand, and 5/100 second CG hand mentioned above are collectively called the sub-hand, and the minute CG counter and 5/100 CG counter are collectively called the sub-hand guard.

Gear train bridge 15, minute CG bridge 24, and 5/100 seconds CG bridge 41
are located at the same position cross-sectionally, so the second hand,
True commonality of the second wheel 12, minute CG wheel 23, and 5/100 second CG wheel 40, which hold the minute CG hand and 5/100 second CG hand, respectively, and the relatively high cost rotors A5, 21,
38 can be made common, and costs can be reduced due to the mass production effect. The legs 18, 26, and 33 are gear train bridge 15, minute CG bridge 24, 5/100 seconds CG bridge 41, and seconds, respectively.
Since the foot of the CG support 32 is shared, the plane space can be reduced.

Coil blocks A4 and 28 and coil blocks B20 and 37 are arranged so that the directions of the poles coincide with the 12 o'clock and 6 o'clock directions of the clock. This improves the appearance of the movement, makes the weakest anti-magnetic direction of each motor almost the same, reduces inspection man-hours, and makes the watch more compact because the anti-magnetic structure only needs to be installed in the weakest direction. I can figure it out.

The minute CG motor and the 5/100 second CG motor are located outside the watch body from the center of rotation of the minute CG wheel 23 and the 5/100 second CG wheel 40, respectively.
By making the minute CG receiver 24 and the 5/100 second CG receiver 41 into blocks together with the second CG receiver 41 (including the second CG receiver 41), the minute CG receiver 24 and the 5/100 second CG receiver 41 can be arranged so that they do not overlap with the train bridge 15, making the watch thinner. By changing the reduction ratio without changing the center distance of the indicating wheel train, it can be applied to alarms, counters, etc., allowing for diversification. Furthermore, by arranging the hour, minute, second and second CG motors almost in a straight line between the minute CG motor and the 5/100 second CG motor, the four motors can be placed in almost the same direction, and each motor can communicate with each other. It is possible to set a distance that will not be affected (minimum gap between motors 0.3 to 1 mm), and it is also possible to downsize the watch body.
Second CG
By interposing the wheel 31, the hour hand, minute hand, and second CG hand, which normally display the time, can be placed in the center of the watch.

43 is a winding stem, 44 is a stopper wheel engaged with the winding stem 43, 45 is a shift lever, and 46 is a changeover switch lever that follows the operation of the shift lever 45 and cooperates with the pattern on the circuit board to determine the state of the watch. , 47 is a bolt, and 48 is a bolt holder, which constitute a switching mechanism. The state shown in Fig. 1 is the portable state of the watch. When the winding stem 43 is pulled out one step, each CG hand is corrected. When the winding stem 43 is pulled out one step further, the hands are set to the normal time, and when the winding stem 43 is pushed in, the watch is in the portable state. Return to This switching mechanism is arranged so that the winding stem 43 does not overlap with each motor in a plane, and also in a position where it does not overlap with the seconds wheel 12, the minute CG wheel 23, and the 5/100 second CG wheel 40 (in the embodiment, it is 8 o'clock). position), making the watch thinner.

Reference numeral 49 denotes a switch lever, which has a U-shaped spring and a recess formed at its tip, and works together with a rotating shaft 50 of the switch lever 49 embedded in the base plate 1 and a pin 51 engaged in the recess to click when the button 52 is pressed. At the same time, the back of the button contacts the pin 53 (described later), turning the switch ON. When the pushing force on the button 52 is released, the U-shaped spring returns to its original position, turning the switch OFF (pin 53 and switch lever 49). ). This switch mechanism is the abbreviation for a clock.
The minute CG motor is located between the winding stem 43 and the switch mechanism located at 10 o'clock, and the 5/100 second CG motor is located between the switch mechanism located at 2 and 4 o'clock. Because it is placed between the mechanisms, 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 is used for battery 2.
It has the function of preventing shortening of the main plate 1 and holding down the switch lever 49.
Receiver 24, 5/100 second CG receiver 41, coil block A
4, 28, and the coil blocks B20, 37 are shaped so that they can be disassembled even when the circuit seat 54 is assembled into the base plate 1. Further, the pin 53 is pushed into the circuit seat 54 and fixed, and corresponds to each switch lever.

55 is a circuit board on which a MOS-IC 56 and a crystal resonator 57 are fixed, and a pattern is formed on the MOS-IC 56 and a crystal resonator 57.
-IC56 and coil block, pin 53, battery 2
Electrical continuity is established between the poles of the device, the switching lever (not in contact with the pattern when carried), the crystal oscillator, etc. The circuit board 55 guides the side surface of the battery 2 on the center side of the watch, and has a planar shape that escapes the second CG receiver 32, coil blocks A and B, and in cross section shows the train gear bridge 15, minute CG receiver 24, 5/100
Placed above the seconds CG receiver 41 (on the opposite side from the main plate 1),
A magnetic shielding plate 58 having a planar shape substantially the same as that of the circuit board 55 is disposed thereon, and is fixed to the base plate 1 with a plurality of screws. Therefore, the circuit board 55
is relatively large in plan view, and each pattern can be routed freely, so it is possible to prevent the pattern of the circuit board 55 (formed on the main plate 1 side) from colliding with metal parts such as the gear train bridge 15, or Holes for checking the operation of each wheel train in the movement state can be provided. Further, since the crystal oscillator 57 is arranged substantially parallel to the coil block A28, the planar space can be effectively utilized, and the timepiece can be made smaller. Further, the magnetic shield plate 58 has the name or abbreviation of each motor marked on the plane facing each motor, so that the installation position of each motor can be determined for after-sales service.

The MOS-IC 56 (shape including molding agent) is arranged so as not to overlap with the gear train bridge 15 in a plane.
It overlaps the second wheel 12 in a plane, leaving a gap in cross section. This arrangement allows the watch to be made thinner and smaller.

The present invention has the above-mentioned structure, and it is possible to make a watch with multiple step motors thinner, smaller, and lower in cost.It also makes it possible to prevent shortcuts and to check the operation using training holes in the gear train, thereby improving quality. The after-sales service can be improved by marking the anti-magnetic plate.

In this invention, we have explained the minute CG, second CG, 5/100 second CG motor and its indicating gear train, but each sub hand is the hour CG.
If it is displayed instead of the hands, date, day of the week, alarm pointer, etc., it can be used in a wide range of applications. Also, although I used the second CG hand as the center of the clock, it can also be replaced with the second hand.
(In that case, replace the hour, minute, and second motors with the second CG motor.) Furthermore, the position of the CG hand does not have to be limited to the position explained in this invention; for example, the watch can be rotated at any angle. This allows for a wide variety of designs.

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 this text is explained as an integrated step motor, but the same applies to a two-piece step motor, and each CG hand is
It may display the monthly phase, alarm time, dual time, etc., and can be applied not only to displaying hands but also to displaying letters, numbers, pictures, etc. on the disc from the window of the dial. As described above, according to the configuration of the present invention, the driving means for the hands that display the normal time and the driving means for the hands that display the chronograph hands are arranged on the main plate, and the hour and minute hands for the normal time are driven. A first support plate that pivotally supports the rotor of the first step motor and the first wheel train, and a second support plate that pivotally supports the rotor of the second step motor that drives a part of the chronograph hand and the second wheel train. , the rotor of the third step motor that drives the second chronograph hand, which has a rotating shaft at the center of the watch, and the third strike plate that pivotally supports the third wheel train are disposed on the main plate, and the first strike plate The and second receiving plates are arranged at substantially the same height in cross-section without overlapping in plan view, so that even though they have a plurality of step motors and gear train means, they each have a shaft support. The rotors and wheel trains that are used can be made common, and the feet that hold the receiving plates can also be shared, making it possible to reduce the plane space, and also to achieve thinner and lower costs.

In addition, by placing the third receiving plate two-dimensionally overlapping the first receiving plate and arranging the second chronograph wheel gear between them, another gear train is interposed within the same cross section. Since this eliminates this problem and allows the gear diameter to be made larger, the bumpiness of the second chronograph wheel is suppressed and stable pointer display is achieved.

Furthermore, since the circuit board has a planar shape that guides the side of the battery, escapes from the third receiving plate, and covers the first and second receiving plates, it can be made larger in plan view and there is less deformation due to installation. As a result, the route to each pattern is shortened, and it can be removed freely, preventing shots from colliding with other metal parts, and holes for various operation checks can be provided, making effective use of flat space. be able to. Also, since the battery and the third receiving plate are separated from each other in cross section, it is possible to reduce the thickness without increasing the thickness, and the battery can also be made larger, so the battery life can be extended.

[Brief explanation of drawings]

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 A, 5, 21, 38
... Rotor A, 29 ... Rotor B, 6 ... Fifth wheel, 7 ... Fourth wheel, 8 ... Third wheel, 9 ... Second wheel, 11 ... Hour wheel, 12 ... Second wheel , 15... Gear train bridge, 16, 17, 18, 25, 26, 33, 42
...Uke foot, 22...minute CG intermediate car, 23...minute CG
Car, 24...minute CG reception, 30...second CG intermediate car, 3
1...Second CG car, 32...Second CG reception, 39...5/10
0 second CG intermediate car, 40...5/100 second CG car, 41...
5/100 seconds CG reception, 19, 36...Stator B, 2
0, 37... Coil block B, 29... Rotor B, 27... Stator C, 35... Bush, 4
3... Winding stem, 56... MOS-IC, 57... Crystal resonator, 49... Switch lever, 58... Magnetic shield plate, 54... Circuit catch, 55... Circuit board.

Claims (1)

[Scope of utility model registration request] A first driving means for driving a hand that normally displays time, a second driving means for driving a chronograph hand, and a third driving means for driving a second chronograph hand.
In the electronic clock, the first means includes a driving means, a circuit board having a pattern for sending a driving signal to each of the driving means, and a battery arranged on the base plate. a first step motor, and a first wheel train 6, 7, which is connected to the first step motor and drives the hour hand and minute hand for normal time display, which has a rotating shaft at the center of the clock.
8, 9, 10, 11, and a first receiving plate 15 which pivotally supports the first wheel train and the rotor 5 with the base plate, and the second driving means includes coils 20, 37.
a second step motor consisting of stators 19, 36 and rotors 21, 38; and a second wheel connected to the second step motor and driving a part of a chronograph hand having a rotating shaft located off the center of the clock. The third driving means includes a coil 28 and a second bearing plate 24, 41 which pivotally supports the second wheel train and the rotors 21, 38 with the base plate. a third step motor consisting of a stator 27 and a rotor 29; a third wheel train 30, 31 that is connected to the third step motor and drives a second chronograph hand having a rotating shaft at the center of the clock; and the third wheel train. and a third receiving plate that pivotally supports the rotor 29 with the base plate, and the first receiving plate and the second receiving plate are substantially at the same height in cross section without overlapping in plan view. The third receiving plate is arranged to overlap the first receiving plate in a plane, and the gear of the seconds chronograph wheel that holds the second chronograph hand is connected to the first receiving plate and the third receiving plate. The circuit board is disposed between the receiving plates, and the circuit board is arranged above the first receiving plate and the second receiving plate to guide the outer shape of the battery, and escapes from the third receiving plate to connect the first receiving plate and the second receiving plate. An electronic watch characterized by being arranged so as to cover a receiving plate.