JPH0411190Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention relates to a movement of a pointer-type electronic watch.

[Prior Art] Generally, the analog movement of a pointer-type electronic watch has a gear train mechanism arranged by arranging a plurality of gears between the main plate and the gear train bridge, and the rotation of a step motor is controlled through this gear train mechanism. The time is indicated by transmitting the information to the hands and causing the hands to move. When attaching hour, minute, and second hands to such an analog movement,
Conventionally, as shown in FIG. 14, both ends of a main plate c of an analog movement b are placed on a main plate holding jig a, and in this state, a pointer e is press-fitted into each pointer shaft d from above.

[Problems with the prior art] In the method of attaching the pointer e as described above, the pointer shaft d
When press-fitting the pointer e, a negative load exceeding a certain level is applied to the analog movement b, so if only both ends of the main plate c are supported by the main plate holding jig a, the entire main plate c and the analog movement b will bend. , there is a drawback that it has an adverse effect on the analog movement b. This drawback is particularly noticeable when the main plate c is made of synthetic resin or when the analog movement b is thin.

[Purpose of the invention] This invention was made in view of the above-mentioned circumstances, and its purpose is to eliminate the deflection of the main plate and analog movement when attaching the hands, without adversely affecting the entire analog movement. To provide a movement for a pointer-type electronic timepiece in which a pointer can be attached reliably and well.

[Main points of the invention] In order to achieve the above-mentioned purpose, this invention has a support pin that reaches from the bottom of the analog movement to the bottom surface of the main plate at a position close to the gear train mechanism, and that supports the support pin of the main plate holding jig when attaching the pointer to the pointer shaft. A plurality of hollow parts are provided into which the parts are inserted.

[Configuration of Embodiment] An embodiment in which this invention is applied to an electronic wristwatch will be described below with reference to FIGS. 1 to 13.

Figures 1 and 2 show the movement. This movement 1 is equipped with digital and analog functions, and includes a main plate 2 made of synthetic resin, a liquid crystal display panel 3, a circuit board 4, a step motor 5, a gear train mechanism 6, a switching correction mechanism 7, and a battery 8. etc. are provided. In this case, the base plate 2 has a substantially disk shape as shown in FIG. Members 2c ₁ to 2c ₄ ,
Small holes 2d..., component storage portions 2e..., etc. are provided. The support members 2c ₁ to 2c ₄ of each component are stepped, as shown in FIGS. 3 b to d, and are press-fitted into holes in the main plate 2 from above (from the pointer e side, which will be described later). The tip of the support member 2c ₁ protrudes from the base plate 2, and parts of a mandarin duck 24 and a stop lever 26, which will be described later, are attached to this protruding part, and the other support members 2c ₂ to 2c ₄ are attached to the inside thereof. A female thread is formed on the The small holes 2d are used to position support pins 33 that support the pointer e, which will be described later, so that the entire body does not bend when the pointer e is attached. Note that the component storage section 2e... stores components such as the battery 8 and a booster coil, and an electrode plate 2f is arranged within the battery storage section 2e.

The liquid crystal display panel 3 digitally displays information such as time, and is placed in the mounting hole 2a of the base plate 2 and electrically connected to the circuit board 4 via an interconnector (not shown). There is. The circuit board 4 is the main part of the clock circuit, and there are
In addition to being equipped with electronic components such as an LSI, a crystal oscillator, and a chip capacitor, electrodes 4b ₁ , 4b ₂ , and 4b ₃ for switches are formed at predetermined locations, and are provided on the base plate 2 to cover the liquid crystal display panel 3. supported member 2
c ₂ , and is attached with screws 28 as described later.

The step motor 5 is a drive source for an analog mechanism, and consists of a coil 9, a stator 10, a rotor 11, etc. When a pulse signal is applied to the coil 9 from the circuit board 4, it generates a magnetic field, and based on this magnetic field, the rotor 11 rotates in steps of half a turn. In this case, the stator 10 is
It is mounted and positioned on supporting members 2c ₃ and 2c ₃ provided in the 2c3, and is attached with screws 28, which will be described later.

The wheel train mechanism 6 controls the rotation of the step motor 5 as an hour hand,
It transmits information to the minute hand, second hand, etc. to move the hands, and as shown in Fig. 4, the intermediate wheel 12, fourth wheel 13, third wheel 14, second wheel 15, and day wheel 1
6, hour wheel 17, etc., which are provided between the base plate 2 and the train wheel bridge 18 made of synthetic resin. That is, the intermediate wheel 12 transmits the rotation of the step motor 5 to the fourth wheel & pinion 13, and rotates while meshing with the rotor pinion 11a of the rotor 11. The fourth wheel 13 is a second hand wheel, which engages with the pinion 12a of the intermediate wheel 12 and rotates once per minute. Its shaft 13b protrudes above the main plate 2, and a second hand (not shown) is attached to the tip of this protruding tip. It is attached. The third wheel & pinion 14 rotates by meshing with the pinion 13a of the fourth wheel & pinion 13, and transmits the rotation to the center wheel & pinion 15. The second wheel 15 is a minute wheel, which engages with the pinion 14a of the third wheel 14 and rotates once per hour, and its shaft 15b is cylindrical.
Bearing cylinder portion 19a of the disk portion 19 provided on the base plate 2
A minute hand (not shown) is attached to the tip protruding upward, and the shaft 15b
The shaft 13b of the fourth wheel & pinion 13 is rotatably inserted into the inside of the wheel & pinion 13. The hour wheel 16 rotates by meshing with the cylindrical pinion 15a of the center wheel 15, and the hour wheel 1
7. The hour wheel 17 is an hour wheel, which engages with the pinion 16a of the hour wheel 16 and rotates twice in 12 hours.
The hour hand (not shown) is attached to the tip of the hour hand.

The switching correction mechanism 7 adjusts the time of the digital function and the analog function, and as shown in FIGS.
It consists of a cannula 25, a stop lever 26, a component holding member 29, and the like. As shown in FIG. 7, the winding stem 20 is arranged in the main plate 2 so as to be able to slide and rotate from the side, and is pulled out in two stages, and when pulled out in the first stage, it enables time adjustment of the digital function. When the step is pulled out, it is possible to adjust the time of the analog function, one end of which protrudes to the side of the main plate 2, and a rotary operation part 20a with a rectangular cross section in the middle part of the other end. Step part 20
A is provided, and furthermore, a Tsuzumi wheel 21 is slidably attached to the tip side thereof. When the winding stem 20 is pulled out two steps, the winding wheel 21 moves to the tip side (to the right in the figure) and engages with the small iron wheel 22, and in this state transmits the rotation of the winding stem 20 to the small iron wheel 22. It is slidably provided on the tip side of the winding stem 20 with a spline or the like. The small iron wheel 22 is configured such that a wheel wheel 21 is removably engaged with the winding stem 20 to transmit the rotation of the winding stem 20 to the hour wheel 16 of the train wheel mechanism 6, and the time is adjusted by rotating a pointer (not shown). It is rotatably attached to a shaft portion 22a formed on the main plate 2, and is constantly engaged with the rear wheel 16 of the train wheel mechanism 6.

The switch lever 23 is used to adjust the time of the digital function, has a leaf spring shape divided into three parts, and is attached to a shaft portion 23d formed on the main plate 2, as shown in FIGS. 10 and 11. As shown, one of the three prongs extends to the rotation operation section 20a of the winding stem 20, and the tip of this extension section 23a is further bent downward, and this bent section 23a ₁ extends to the rotation operation section 20a. The other two extend in the front-rear direction and are further bent upward, with the tips of each of the extension parts 23b and 23c forming a "C" shape provided on the circuit board 4. The electrodes 4b ₁ and 4b ₂ are detachably brought into contact with each other. Therefore, the switch lever 23 is connected to the winding stem 2.
0 is pulled out one step and rotated to the right (in the direction of arrow _X1 in the figure) as shown in _FIG . When the winding stem 20 is rotated to the left (direction _of arrow Y ₁ ) as shown in FIG. The time displayed on the liquid crystal display panel 3 is thereby adjusted.

The mandarin duck 24 rotates in response to the pull-out operation of the winding stem 20, and as shown in FIGS. 8 and 9, the whole has a substantially "V"-shaped flat plate shape, and its upper end is attached to the main plate 2. supported member 2
c ₁ is rotatably attached to the winding stem 20 as shown in FIG. 24b is erected, and a recess 24c is provided on the front side.

The cannula 25 slides the dial wheel 21 in response to the pull-out operation of the winding stem 20 and also changes the time adjustment of the digital function.
The distal end portion (rear end portion) 25a is rotatably attached to the step portion 2 of the Tsuzumi wheel 21.
1a, and a dogleg-shaped groove 25b is formed in the middle part into which the operation pin 24b of the mandarin duck 24 is inserted and _moved . Extending electrode switching section 2
5c is provided. Therefore, Kannuki 2
5, when the winding stem 20 is not pulled out, the operation pin 24b of the mandarin duck 24 is located at the lower end of the dogleg-shaped groove 25b, and the tip 25a is located at the left side, as shown in FIG. At the same time, the electrode switching section 25 is moved away from the small iron car 22.
Since the tip of c is located in the center without contacting the electrode _4b3 of the circuit board 4, it becomes impossible to adjust the time of the digital function using the switch lever 23. Then, when the winding stem 20 is pulled out one step, as shown in FIG. 8, the cannula 25 rotates to the left (in the _direction of arrow C-shaped groove 25b
Since the tip portion 25a further separates the Tsuzumi wheel 21 from the small iron wheel 22, the electrode switching portion 25c moves the electrode _4b3 of the circuit board 4.
Since you touch one of the buttons, it becomes possible to adjust the time of the digital function. Furthermore, when the winding stem 20 is pulled out two steps, as shown in FIG. It rotates in the opposite direction (arrow Y ₂ direction), and its tip 25a engages the Tsuzumi wheel 21 with the small iron wheel 22 to enable time adjustment of the analog function. Electrode 4
Since it touches one side of b ₃ , it becomes impossible to adjust the time on the digital function.

The stop lever 26 includes a mandarin duck holding portion 26a,
It is integrally equipped with a position regulating part 26b and a stopper part 26c of the operation pin 24b, and is attached to a support member _2c4 provided on the base plate 2, and is attached to a screw 2, which will be described later.
It is installed with 8. In this case, the mandarin duck holding part 26a elastically holds down the mandarin duck 24, and a hole 26a ₁ is formed on the tip side thereof, and the lower end of the support member 2c ₁ of the main plate 2 is inserted into this hole 26a ₁ . Moreover, this tip side is slightly bent, and this bent portion elastically presses down the mandarin duck 24. The position regulating part 26b regulates the position of the operating pin 24b of the mandarin duck 24 in three stages according to the pulling operation of the winding stem 20,
Three locking recesses are formed, and each locking recess elastically holds the operating pin 24b. The stopper part 26c is for stopping the rotation of the winding stem 20 by coming into contact with the intermediate wheel 12 when the winding stem 20 is pulled out two steps _. When the stepped portion 26c ₁ is pushed up by the tip of the mandarin duck 24, the tip of the stopper portion 26c comes into elastic contact with the intermediate wheel 12 to stop the rotation of the intermediate wheel 12.

On the other hand, as shown in FIG.
The support member 2 provided on the main plate 2 is used to hold down the stop lever 26, the suspension wheel 21, the small iron car 22, etc., so that they do not fall off the main plate 2.
c ₂ and 2c ₄ , and is attached with screws 28. In this case, the component holding member 29 is provided with openings 29a, such as viewing windows and cutouts, at predetermined locations. The openings 29a are provided at portions corresponding to the connecting portions of each component, so that the connected state of these parts can be seen after assembly.

Further, as shown in FIG. 2, a reinforcing plate 30 is attached to the movement 1 so as to cover the above-mentioned component holding member 29. This reinforcing plate 30 is a thin plate made of stainless steel, and as shown in the figure, it has a battery holding part 30a, etc., and includes a liquid crystal display panel 3, a circuit board 4, a rear step motor, a gear train mechanism 6, a switching correction mechanism 7, After installing the battery 8 etc., the main plate 2
The supporting members 2c ₂ , 2c ₃ , etc. provided therein are screwed into internal threads. In this case, as shown in FIG. 12, the reinforcing plate 30 has a screwed portion recessed by drawing, and the head 28a of the screw 28 is disposed in this recess 30a. That is, the circuit board 4 is placed on the base plate 2, and the reinforcing plate 30 is placed on the circuit board 4 with an insulating sheet 31 interposed therebetween. Then, the recess 30a of the reinforcing plate 30 is made to correspond to the support member 2c ₂ provided on the base plate 2, and in this state, the screw 28 is inserted from above the reinforcing plate 30.
is screwed into the female thread of the support member 2c ₂ , thereby pressing the circuit board 4 onto the base plate 2 with the reinforcing plate 30.
At this time, the recessed portion 30a of the reinforcing plate 30 contacts the circuit board 4 through the opening of the insulating sheet 31, thereby establishing electrical conduction.

Furthermore, in the movement 1 assembled in this way, the train wheel bridge 18 of the train wheel mechanism 6 and the circuit board 4 adjacent thereto are as shown in FIGS. 2 and 13.
As shown in the figure, each gear of the wheel train mechanism 6 (the above-mentioned intermediate wheel 12, fourth wheel & pinion 13, third wheel & pinion 14, second wheel & pinion 1)
5. Notches 32 are formed at locations that do not overlap with the hinoura wheel 16, hour wheel 17, etc.). This notch 32 forms a space between the gear train bridge 18 and the circuit board 4 to reach the main plate 2, and a support pin 33 supporting the main plate 2 is inserted into this space. This is so that the tips of the support pins 33 are received by the lower surface of the base plate 2. That is, when attaching the hands e such as the hour hand, minute hand, second hand, etc., as shown in FIG. A support pin 33 placed on the jig 34 and provided on the base plate holding jig 34
... is inserted into the space within the movement 1 through the notch 32 ..., and the main plate 2 is supported by the support pins 33 .... In this state, move the pointer e to movement 1.
Press fit and fix to each pointer shaft 13b, 15b, 17b sequentially from above.

[Operation of the embodiment] Next, the movement 1 configured as described above will be described.
The operation will be explained.

Normally, the time is displayed digitally on the liquid crystal display panel 3, and the step motor 5 is operated to move hands such as the hour hand, minute hand, and second hand to indicate the time in an analog manner. That is, the liquid crystal display panel 3 is given a drive signal from the circuit board 4, and displays the time based on this drive signal. Further, the step motor 5 is supplied with a reversal pulse every second from the circuit board 4 to the coil 9, which causes the rotor 1
1 rotates in steps every second. This rotation is transmitted to the fourth wheel & pinion 13 via the intermediate wheel 12 of the wheel train mechanism 6, causing the second hand attached to the shaft 13b of the fourth wheel & pinion 13 to rotate once per minute. Also, the fourth wheel 13
This rotation is transmitted to the center wheel & pinion 15 via the center wheel & pinion 14, causing the minute hand attached to the shaft 15b of the center wheel & pinion 15 to rotate once per hour. Further, the rotation of the center wheel 15 is transmitted to the hour wheel 17 via the hour wheel 16, and the hour hand attached to the hour wheel 17 is rotated.
Rotate once every 12 hours. As a result, the time is indicated and displayed in an analog manner.

Next, the case of correcting the time will be explained.
In this case, in advance, the winding stem 2 of the switching correction mechanism 6 is
0 is pushed into the main plate 2, as shown in FIGS.
The electrode switching portion 25c of the cannula 25 is arranged without contacting the electrode _4b3 of the circuit board 4.

In this state, when the winding stem 20 is pulled out one step, the time on the liquid crystal display panel 3 can be adjusted. That is, when the winding stem 20 is pulled out one step, as shown in FIG.
The mandarin duck 24 rotates around the shaft 24d, and the operating pin 24b provided on the right end side of the mandarin duck 24 rotates around the shaft 24d.
Since the cannula 25 moves in the dogleg-shaped groove 25b of No. 5 from the lower end to the middle portion, it rotates in the direction of the arrow _X2 . Then, the tip part 25a becomes the Tsuzumi wheel 2.
1 further away from the small railway car 22,
The tip of the electrode switching part 25c is the electrode 4 of the circuit board 4.
b ₃ , the time on the liquid crystal display panel 3 can be adjusted. In this state _, when the winding stem 20 is turned to the right (in the direction of arrow X ₁ ) as shown in FIG. As shown in FIG. 10a, the tip of the upper extension portion 23b comes into contact with the electrode _4b1 of the circuit board 4 every half turn, and outputs a correction signal for specifying the correction digit. Conversely, if you turn the winding stem 20 to the left (arrow Y ₁ direction) as shown in Figure 11b, the winding stem 2
Since the rotary operating portion 20a of the switch lever 23 presses the bent portion 23a1 of the extension portion 23a of the switch lever ₂₃ to the opposite side, as shown in FIG.
The tip of b contacts the electrode _4b1 of the circuit board 4 every half rotation, and outputs a correction signal for stepping. Thereby, the time on the liquid crystal display panel 3 can be adjusted.

Next, when the winding stem 20 is pulled out two steps, it becomes possible to adjust the time on the analog display. That is, the winding stem 20 is
When you pull out the stage, the mandarin duck 2 will appear as shown in Figure 9.
4 further rotates around the shaft portion 24d, and the operation pin 24b provided on the right end side moves within the dogleg-shaped groove 25b of the cannula 25 from the middle part to the upper end, so that the cannula 25 Arrow Y Rotates in _two directions. Then, the tip portion 25a moves the switch wheel 21 toward the small iron wheel 22 and meshes with the small iron wheel 22, and the tip of the electrode switching portion 25c comes into contact with the other electrode _4b3 of the circuit board 4, and the switch lever 23 Switch signal (signal for time adjustment)
Stops output. In this case, the operating pin 24b of the mandarin duck 24 is regulated in position by the position regulating portion 26b of the stop lever 26, and the mandarin duck 24 is regulated in position.
The right end of 4 is the stopper part 26 of the stop lever 26
c and push its tip up to the intermediate wheel 1 of the gear train mechanism 6.
2 to stop the rotation of the intermediate wheel 12.
This makes it possible to adjust the time on the analog display. In this state, when the winding stem 20 is turned, the winding wheel 21 rotates while meshing with the small iron wheel 22, so the rotation of the winding stem 20 is transmitted to the small iron wheel 22 via the winding wheel 21, and this small iron wheel rotates. The rotation of 22 causes the hands e, such as the hour hand, minute hand, and second hand, to move, which are transmitted to the day wheel 16 of the wheel train mechanism 6. This results in
The time on the analog display is adjusted.

After the digital and analog time adjustments have been made in this manner, by pushing in the winding stem 20, the watch returns to its normal state as shown in FIG. 7 and displays the current time.

However, according to the movement 1 described above, as shown in FIG. 2 and FIG. Gears, i.e. intermediate wheel 12, fourth wheel 13, third wheel 14, second wheel 15, Hinoura wheel 1
6. A notch 32 is provided at a location that does not overlap with the hour wheel 17, small iron wheel 22, etc., and a space is formed within the gear train mechanism 6 by the notch 32. When placing the pointer e on the base plate 2, the support pins 33 are inserted into the space through the cutouts 32, and the base plate 2 can be supported by the support pins 33.
Therefore, each pointer shaft 13b, 1 of the movement 1
Even when the pointer e is press-fitted into the parts 5b and 17b, the main plate 2 and the movement 1 as a whole do not bend, and the movement 1 is not adversely affected, and the pointer e can be attached reliably and satisfactorily. Thereby, a movement 1 with excellent quality can be provided.

[Effects of the invention] As explained in detail above, according to the analog movement of the pointer type electronic watch related to this invention, the pointer reaches from the bottom of the analog movement to the bottom surface of the main plate at a position close to the gear train mechanism. We have provided multiple hollow parts into which the support pins of the main plate holding jig are inserted when attaching the pointer to the shaft, and the lower surface of the main plate is supported by the multiple support pins when the pointer is attached. This has the advantage that the pointer can be mounted reliably and well without bending and without adversely affecting the entire analog movement.

[Brief explanation of the drawing]

Figures 1 to 13 show an example in which this invention is applied to the movement of an electronic wristwatch.
Figure 1 is a bottom view of the movement as seen from below, Figure 2 is a bottom view of the movement with the circuit board and reinforcing plate attached to its bottom, and Figure 3 is the main plate.
Figure 3a is a bottom view of the main plate, Figure 3b is its B-B
3c is a sectional view taken along the line C-C, FIG. 3d is an enlarged sectional view of the mandarin duck and the mandarin duck presser attached to the support member, and FIG. 4 is an enlarged sectional view of the gear train mechanism. Fig. 5 is an enlarged bottom view of the switching correction mechanism, Fig. 6 is a sectional view of its main parts, Figs. The figure shows a bottom view with the winding stem pulled out one step, FIG. 9 is a bottom view with the winding stem pulled out two steps, FIGS. 10 and 11 show the operating state of the switch lever, and FIG. , b are views showing the winding stem turned to the right side, Figures 11a and b are views showing the winding stem turned to the left side, and Figure 12 is an enlarged sectional view of the main part with the reinforcing plate attached. , FIG. 13 is a diagram showing the state in which the pointer is attached, and FIG. 14 is a diagram showing the state in which the conventional pointer is attached. DESCRIPTION OF SYMBOLS 1... Movement, 2... Main plate, 4... Circuit board, 5... Step motor, 6... Wheel train mechanism,
18... Gear train bridge, 32... Notch, 33... Support pin, e... Pointer.

Claims (1)

[Claims for Utility Model Registration] The pointer shaft protrudes from the top side of the main plate, and
In an analog movement of a pointer-type electronic watch, in which parts such as a gear train mechanism consisting of a plurality of gears, a gear train bridge, a step motor, and a circuit board are attached to the lower surface of the base plate, the gear train mechanism is located close to the gear train mechanism. A pointer-type electronic timepiece movement comprising a plurality of hollow portions that extend from the lower side of the analog movement to the lower surface of the main plate and into which support pins of a main plate holding jig are inserted when the pointer is attached to the pointer shaft.