WO2001065320A1 - Mechanical timepiece with posture detecting part and optical timed annular balance rotation detecting part - Google Patents

Abstract

A mechanical timepiece, comprising a movement (300) including a movement barrel (120), a second wheel (124), a third wheel (126), a fourth wheel (128), a timed annular balance (140), an escape wheel (130), and a pallet fork (142), coils (180a, 180b) being installed on the front surface of a main plate (102) so that these coils face the main plate side surface of an annular balance wheel (140b), a balance magnet (140e) being installed on the main plate side surface of the annular balance wheel (140b) so that the balance magnet (140e) faces the front surface of the main plate (102) , and additionally comprising a timed annular balance rotation detecting part (176) installed for detecting the swing angle of the timed annular balance by detecting, using light, the operating condition of the timed annular balance (140), a posture detecting part (361) for detecting the posture of the mechanical timepiece, and a braking part (146) formed so that a force to suppress the rotation of the timed annular balance (140) is applied to the timed annular balance (140) based on the signals concerning the posture of the mechanical timepiece detected by the posture detecting part (361) when the swing angle of the timed annular balance (140) detected by the timed annular balance rotation detection part (176) is equal to or more than a pre-set angle.

Description

 Description Mechanical watch equipped with attitude detector and optical balance rotation detector

〔Technical field〕

 According to the present invention, a force that suppresses the rotation of the balance with hairspring is applied to the balance with the balance based on the detection result of the posture of the mechanical watch and the detection result of the swing angle of the balance with the mechanical watch. The present invention relates to a mechanical timepiece provided with an attitude detection unit and an optical balance rotation detection unit.

(Background technology)

 In a conventional mechanical timepiece, as shown in FIGS. 17 and 18, a movement (mechanical body) 110 of the mechanical timepiece has a main plate 1102 constituting a substrate of the movement. The winding stem 111 is rotatably incorporated into the winding guide hole 111a of the main plate 111. A dial 1 104 (shown in phantom in FIG. 18) is attached to the movement 110.

 In general, of the two sides of the main plate, the side with the dial is called the “back side” of the movement, and the side opposite to the side with the dial is called the “front side” of the movement. The train wheel built into the “front side” of the movement is called “front train wheel”, and the train wheel built into the “back side” of the movement is called “back train wheel”.

The position of the winding stem 1 110 in the axial direction is determined by a switching device that includes the setting 1 1 9 0, the latch 1 1 9 2, the latch spring 1 1 9 4, and the back retainer 1 1 9 6. The wheel 1 1 1 2 is rotatably provided on the guide shaft portion of the winding stem 1 1 1 0. Makino 1 1 1 0, When the winding pin 111 is rotated in the first winding position (0th stage) closest to the inside of the movement along the direction of the rotation axis, the rotation of the pinwheel causes The car 1 1 1 2 rotates. Crown wheel 1 1 1 4, _c ratchet wheel 1 1 1 6 which is rotated by the rotation of the winding pinion 1 1 1 2 is rotated by the rotation of the crown wheel 1 1 1 4. When the square wheel wheel 1 1 1 6 rotates, the mainspring 1 1 2 2 housed in the barrel wheel 1 1 2 0 is rolled up.c The second wheel 1 1 2 4 is rotated by the rotation of the barrel wheel 1 1 2 0 Rotate. The escape wheel 1 1 3 0 rotates through the rotation of the 4th wheel 1 1 2 8, the 3rd wheel 1 1 2 6, and the 2nd wheel 1 1 2 4. Incense box 1 1 2 0, 2nd wheel 1 1 2 4, 3rd wheel 1 1 2 6 and 4th wheel 1 1 2 8 constitute a front wheel train.

 The escape / governing device for controlling the rotation of the front wheel train includes a balance 111, an escape wheel 111, and an ankle 111. The balance 111 includes a balance 111a, a balance wheel 114, and a hairspring 111c. Based on the rotation of the second wheel & pinion 1 1 2 4, the cylinder pinion 1 1 50 rotates simultaneously. The minute hand 1 1 5 2 attached to the cylindrical pin 1 1 50 displays “minute”. The cannon pinion 1150 is provided with a slip mechanism for the second wheel & pinion 1124. Based on the rotation of the canal pinion 115, the hour wheel 1154 rotates through the rotation of the minute wheel. The hour hand 1 1 5 6 attached to the hour wheel 1 1 5 4 indicates “hour”.

 The barrel car 1 120 is supported so as to be rotatable with respect to the main plate 1 102 and the barrel holder 1 160. The second wheel 1 1 2 4, the third wheel 1 1 2 6, the fourth wheel 1 1 2 8, and the escape wheel 1 1 3 0 are for the main plate 1 1 0 2 and the train wheel bridge 1 1 6 2 It is supported so that it can rotate. The ankle 1 1 4 2 is supported so as to be rotatable with respect to the main plate 1 1 10 2 and the ankle receiver 1 1 6 4. The balance with hairspring 1140 is supported so as to be rotatable with respect to the main plate 1102 and the balance with hairspring 1166.

The hairspring 111 4 c is a thin leaf spring having a spiral shape and a plurality of turns. The inner end of the hairspring 1 1 4 0 c is in the balance 1 1 4 0 a The outer end of the hairspring 1 140 c is fixed to the fixed beard ball 1 140 d, and the outer end of the hairspring 1 140 c is screwed through the beard holder 1 170 a attached to the beard holder 1 170 fixed to the balance holder 1 166. Fixed.

 A needle 1168 is rotatably mounted on the balance 1166. A beard holder 1 168 a and a beard bar 1 1 68 b are attached to the needle 1 168. The portion near the outer end of the hairspring 1140c is located between the whiskers 1168a and the whiskers 1168b.

 Generally, in a typical conventional mechanical watch, as shown in Fig. 19, as the mainspring is unwound from a state in which the mainspring is completely wound up (full winding state) and the duration of the mainspring has elapsed, the mainspring torque is increased. Decreases. For example, in the case of Fig. 19, the mainspring torque is about 27 g, cm in the fully wound state, becomes about 23 g · cm after 20 hours from the fully wound state, and 40 hours from the fully wound state. About 18 g · cm passing.

 In general, as shown in Figure 2.0, when the mainspring torque is reduced, the swing angle of the balance with hairspring is reduced, as shown in Fig. 2.0. For example, in the case of Fig. 20, when the mainspring torque is 25 to 28 g * cm, the swing angle of the balance with hairspring is about 240 to 270 degrees, and when the mainspring torque is 20 to 25 gcm, the swing of the balance with hairspring is obtained. The corner is about 180-240 degrees.

 Referring to FIG. 21, there is shown a transition of the instantaneous rate (a numerical value indicating the precision of the timepiece) with respect to the swing angle of the balance with a typical conventional mechanical timepiece. Here, the "instantaneous rate" is defined as "when the mechanical watch is left for one day while maintaining the state and environment, such as the swing angle of the balance when measuring the rate, A value indicating the advance or delay of a mechanical watch ”. In the case of FIG. 21, the instantaneous rate is delayed when the swing angle of the balance with hairspring is 240 degrees or more, or 200 degrees or less.

For example, in a typical conventional mechanical watch, the swing of the balance When the angle is about 200 to 240 degrees, the instantaneous rate is about 0 to 5 seconds / day (about 0 to 5 seconds per day, advance), but the swing angle of the balance is about 17 At 0 degrees, the instantaneous rate is about-20 seconds / day (about 20 seconds behind each day).

 FIG. 22 shows the transition of the elapsed time and the instantaneous rate when the mainspring is rewound from the fully wound state in a typical conventional mechanical timepiece. Here, in a conventional mechanical clock, it indicates the advance of the clock per day or the delay of the clock

The “rate” is obtained by integrating the instantaneous rate, which is shown by the extra fine line in FIG. 22 with respect to the elapsed time when the mainspring is unwound from all windings, over 24 hours.

 In general, in a conventional mechanical timepiece, as the mainspring is unwound from the fully wound state and the duration time elapses, the mainspring torque decreases and the swing angle of the balance with hairspring decreases, so that the instantaneous rate is delayed. For this reason, in a conventional mechanical watch, the instantaneous rate when the mainspring is fully wound is advanced in advance in anticipation of a delay of the watch after a lapse of 24 hours. The watch was adjusted in advance so that the "rate", which indicates clock advance or clock delay, was positive.

 For example, in a conventional typical mechanical timepiece, as shown by the extra-fine line in Fig. 22, the instantaneous rate is about 3 seconds / day in the fully wound state (about 3 seconds per day). After 20 hours from the fully wound state, the instantaneous rate is about 3 3> / day (about 3 seconds behind each day), and after 24 hours from the fully wound state, the instantaneous rate is about 8 seconds / (Approximately 8 seconds late per day), and after 30 hours from the fully wound state, the instantaneous rate becomes approximately 16 seconds / day (approximately 16 seconds late per day).

 In a mechanical watch, assuming that the dial is attached, there are two types: a “flat position” where the dial is horizontal, and a “standing position” where the dial is vertical. Is defined.

In mechanical watches, assuming that the dial is attached, the direction from the center of the mechanical watch to the 12 o'clock scale on the dial is called "12 o'clock direction", The direction from the center of the mechanical watch to the 3 o'clock scale on the dial is called `` 3 o'clock direction '', and the direction from the center of the mechanical watch to the 6 o'clock scale on the dial is called `` 6 o'clock direction ''. The direction from the center of the watch to the 9 o'clock scale on the dial is called the 9 o'clock direction j (see Figure 17).

 Also, in mechanical watches, when the dial is attached and the dial is assumed to be vertical, the attitude of the dial at 12 o'clock is up, and the attitude of “12 o'clock above” The position in which the dial at 3 o'clock is up is called "3 o'clock position", and the position at which the dial at 6 o'clock is up is called "6 o'clock position". The position in which the 9 o'clock scale on the dial is up is called "9 o'clock position".

 And in the mechanical watch, the four different postures of "1 2 o'clock position", "3 o'clock position", "6 o'clock position" and "9 o'clock position" It is known that the measured values of are different. Therefore, in a mechanical watch, the “rate” is measured for these four standing positions, and the rate of the mechanical watch is adjusted so that the measured value of the “rate” satisfies a predetermined standard. Manufactured mechanical watches.

 In the following description, the “rate when the mechanical watch is in the 12 o'clock position” is referred to as “1 2 upper rate”, and the “rate when the mechanical watch is in the 3 o'clock position” is “ The rate when the mechanical watch is in the 6 o'clock position is referred to as `` 3 upper rate '', and the rate when the mechanical watch is in the 6 o'clock position is referred to as `` 6 upper rate '', and the rate when the mechanical watch is in the 9 o'clock position is Called "9 higher rate". Referring to FIG. 23, in the mechanical timepiece, when the swing angle of the balance with hairspring is 150 degrees, the average value of the rates in four standing postures (3 upper steps, 6 upper steps, 9 upper steps, 1 2 upper steps) The average value of the rate is about 31 3 / said. Also, when the swing angle of the balance with hairspring is 250 degrees, the average value of the rate in the four standing positions is about -4 seconds.

 In a mechanical timepiece, when the swing angle of the balance with hairspring is 180 degrees, the average value of the rates in the four standing positions is about 20 to 25 seconds / day.

On the other hand, referring to FIG. 20, in the mechanical watch, the swing angle of the balance with hairspring is 18 At 0 degrees, the rate in a flat posture is about 10 seconds / day. In other words, in the mechanical timepiece, when the swing angle of the balance with hairspring is 180 degrees, it can be seen that the rate in the upright position is ahead of the rate in the flat position by about 10 to 15 seconds / day.

 Conventionally, in order to adjust the rate of such a mechanical watch, the balance (mechanical body) 110 of the assembled mechanical watch is manually removed from the balance 1101 by hand, and the balance is manually adjusted. This was done by scraping off a part of it and assembling the movement (mechanical body) 1101 again. For this reason, the movement (mechanical body) of the mechanical watch that has been assembled is measured at a rate of 110, and a part of the balance wheel is scraped off. Body) The rate was measured at 1100.

 Therefore, measuring and adjusting the rate required a lot of time and effort, and it was difficult to realize a highly accurate mechanical timepiece. A conventional balance angle adjusting device for a balance with hairspring is provided with a swing angle adjusting plate that applies a braking force to the balance with an overcurrent generated each time the magnet of the balance approaches and swings. It is disclosed in Japanese Patent Publication No. 544-141675.

 Further, a specific structure of a conventional automatic winding mechanism of a self-winding timepiece is disclosed in, for example, Japanese Patent Application Laid-Open No. 11-183645. An object of the present invention is to provide a mechanical timepiece that has a small change in the rate even after the lapse of time from the fully wound state and has good accuracy.

[Disclosure of the Invention]

The present invention provides a mainspring constituting a power source of a mechanical timepiece, a front train wheel that rotates by a rotational force when the mainspring is unwound, and an escapement for controlling the rotation of the front train wheel. The escapement / speed governor is equipped with a balance that alternates between clockwise and counterclockwise rotation, an escape wheel that rotates based on the rotation of the front train wheel, and a balance based on the operation of the balance with hairspring. In a mechanical timepiece configured to include an pallet for controlling the rotation of a balance wheel, a balance wheel provided to detect a swing angle of the balance with hairspring by detecting an operation state of the balance with hair using light. Detection unit, posture detection unit for detecting the posture of the mechanical watch, and posture detection unit detected when the swing angle of the balance with hairspring detected by the balance rotation detection unit is greater than or equal to a preset angle. And a control section configured to apply a force to the balance with hairspring to suppress rotation of the balance with hairspring based on a signal relating to the posture of the mechanical timepiece.

 In the mechanical timepiece of the present invention, the balance with hairspring detecting unit is configured to include a light emitting unit for irradiating the balance with the balance arm and a light receiving unit for receiving light illuminating the balance with the balance arm. preferable.

 Further, in the mechanical timepiece of the present invention, it is preferable that the braking unit is configured to include a coil arranged so as to be able to brake the movement of the balance magnet.

 By using the posture detection unit, the balance rotation detection unit, and the braking unit configured as described above, the rotation angle of the balance of the mechanical watch can be effectively controlled, and as a result, the mechanical watch Accuracy can be improved.

 Further, the mechanical timepiece of the present invention calculates the swing angle of the balance with hairspring by measuring the operation of the balance with hairspring rotation configured to control the light emitted from the light emitting unit and the balance with hairspring arm. A balance rotation control circuit configured in such a manner that when the swing angle of the balance with hairspring is less than a certain threshold value, the coil is not turned on and the swing angle of the balance with hairspring is When the voltage is equal to or more than the certain threshold value, it is preferable that the coil be made conductive.

It is preferable that the mechanical timepiece of the present invention is configured to further include a balance rotation detection circuit and a power storage unit for operating the balance rotation control circuit. Further, the mechanical timepiece of the present invention preferably further includes a power generation unit for charging the power storage unit.

 Further, in the mechanical timepiece of the present invention, the attitude detecting unit is configured to contact the rotating weight, the attitude detecting member provided on the rotating weight, and the attitude detecting member when the mechanical timepiece is in the vertical attitude, and the detection signal It is preferable to include a posture detecting electrode for outputting the balance to a balance rotation control circuit.

 Further, in the mechanical timepiece of the present invention, the attitude detecting unit is configured to contact the rotating weight, the attitude detecting member provided on the rotating weight, and the attitude detecting member when the mechanical timepiece is in the vertical attitude, and the detection signal A return spring provided to prevent the attitude detection member from contacting the attitude detection electrode when the mechanical timepiece is in a flat attitude, and a mechanical timepiece. It is preferable to include a spherical pressing member provided for bringing the posture detecting member into contact with the posture detecting electrode when in the standing posture.

 With this configuration, it is possible to provide a highly accurate mechanical timepiece with little change in the rate even after the lapse of time from the fully wound state.

[Brief description of drawings]

 FIG. 1 is a plan view showing a schematic shape of a front side of a movement when an automatic winding part is removed in an embodiment of a mechanical timepiece of the present invention. Omitted, and the receiving member is shown by a virtual line).

 FIG. 2 is an enlarged partial cross-sectional view schematically showing a wheel train, an escapement / governing device, in the embodiment of the mechanical timepiece of the present invention.

 FIG. 3 is an enlarged partial plan view showing a schematic shape of a balance with hairspring in the embodiment of the mechanical timepiece of the present invention.

FIG. 4 is an enlarged partial sectional view showing a schematic shape of a balance with hairspring in the embodiment of the mechanical timepiece of the present invention. FIG. 5 is a perspective view showing a schematic shape of a balance magnet used in the mechanical timepiece of the present invention.

 FIG. 6 is an enlarged partial cross-sectional view showing a schematic shape of an automatic winding section in the embodiment of the mechanical timepiece of the present invention.

 FIG. 7 is a plan view showing a schematic configuration of a rotating weight and a posture detecting unit in the embodiment of the mechanical timepiece of the present invention.

 FIG. 8 is an enlarged partial plan view showing the schematic shapes of the rotating weight and the attitude detection switch in the embodiment of the mechanical timepiece of the present invention.

 FIG. 9 is an enlarged partial cross-sectional view showing a schematic configuration of the rotating weight and the attitude detection switch in the embodiment of the mechanical timepiece of the present invention.

 FIG. 10 is an enlarged partial cross-sectional view showing a schematic shape of the attitude detection switch in the embodiment of the mechanical timepiece of the present invention.

 FIG. 11 is a plan view schematically showing a rotating weight and a posture detecting unit in another embodiment of the mechanical timepiece of the present invention. ':

 FIG. 12 is an enlarged partial plan view showing a schematic configuration of a rotating weight and a posture detection switch in another embodiment of the mechanical timepiece of the present invention.

 FIG. 13 is an enlarged partial cross-sectional view showing a schematic configuration of a rotating weight and a posture detection switch in another embodiment of the mechanical timepiece of the present invention.

 FIG. 14 is an enlarged partial cross-sectional view showing a schematic configuration of a posture detection switch in another embodiment of the mechanical timepiece of the present invention.

 FIG. 15 is a block diagram showing a schematic configuration of the mechanical timepiece of the present invention.

 FIG. 16 is a flowchart showing the operation of the mechanical timepiece of the present invention.

FIG. 17 is a plan view showing a schematic shape of a front side of a movement of a conventional mechanical timepiece (in FIG. 17, some parts are omitted, and receiving members are indicated by phantom lines). Fig. 18 is a schematic partial cross-sectional view of a movement of a conventional mechanical watch. Then, some parts are omitted).

 Fig. 19 is a graph schematically showing the relationship between the elapsed time of unwinding a whole timepiece and a mainspring torque in a mechanical timepiece.

 FIG. 20 is a graph schematically showing a relationship between a swing angle of a balance with hairspring and a mainspring torque in a mechanical timepiece.

 FIG. 21 is a graph schematically showing the relationship between the swing angle of the balance with hairspring and the instantaneous rate when the mechanical timepiece is arranged in a flat posture.

 FIG. 22 is a graph schematically showing the relationship between the elapsed time and the instantaneous rate in every turn of the mechanical timepiece of the present invention and the conventional mechanical timepiece.

 FIG. 23 is a graph schematically showing the relationship between the swing angle of the balance with hairspring and the average value of the rate in four standing positions when the mechanical timepiece is placed in the standing position.

[Best mode for carrying out the invention]

 An embodiment of a mechanical timepiece according to the present invention will be described below with reference to the drawings.

 (1) Configuration of switching device and winding section

 Referring to FIG. 1 and FIG. 2, in the embodiment of the mechanical timepiece of the present invention, the movement (mechanical body) 300 of the mechanical timepiece has a main plate 102 constituting a substrate of the movement. The winding stem 110 is rotatably incorporated into the winding guide hole 102 a of the main plate 102. The dial 104 is attached to the movement 300.

The winding stem 110 has a corner and a guide shaft. A thumbwheel (not shown) is installed at the corner of the winding stem 110. The ratchet wheel has the same rotation axis as that of the winding pin 110. That is, the ratchet wheel has a square hole, and is provided so as to rotate based on the rotation of the winding stem 110 by fitting the square hole into the corner of the winding stem 110. The ratchet wheel has insteps and teeth. The instep is located at the end of the wheel closer to the center of the movement. The second tooth is located at the end of the wheel, closer to the outside of the movement. Be killed.

 The movement 300 is provided with a switching device for determining the position of the winding stem 110 in the axial direction. The switching device includes a setting lever 190, a latch 1992, a latch spring 1994, and a back retainer 1996. The position of the winding stem 110 in the rotation axis direction is determined based on the rotation of the setting. Determine the position of the thumbwheel in the direction of the rotation axis based on the rotation of the bolt. Based on the rotation of the setting, the bar is positioned in two rotational directions.

 The wheel 1 1 2 is rotatably provided on the guide shaft of the winding stem 110. When the winding stem 110 is rotated in the state where the winding stem 110 is located at the first winding stem position (the 0th stage) closest to the inside of the movement along the rotation axis direction, The wheel 1 1 2 is configured to rotate through the rotation of the vehicle. The round wheel 1 1 4 is configured to rotate by the rotation of the wheel 1 1 2. The square hole wheel 116 is configured to rotate by the rotation of the round hole wheel 114.

(2) Power source and wheel train configuration

 The movement 300 uses a mainspring 122 housed in a barrel car 120 as a power source. The mainspring 1 2 2 is made of an elastic material having a spring property such as iron. The configuration is such that the mainspring 1 2 2 can be wound up by rotating the square wheel 1 1 6.

 The second wheel & pinion 124 is configured to rotate by the rotation of the barrel wheel 120. The third wheel 1 2 6 is configured to rotate based on the rotation of the second wheel 1 2 4. 4th car

1 2 8 is configured to rotate based on the rotation of the third wheel 1 2 6. Good luck car

130 is configured to rotate based on the rotation of the fourth wheel & pinion 128. The barrel car 1 2 0, the second wheel 1 2 4, the third wheel 1 2 6 and the fourth wheel 1 2 8 constitute a front wheel train. (3) Escape

 Referring to FIGS. 1 to 4, the movement 300 is provided with an escapement / governing device for controlling the rotation of the front train wheel. The escapement and governor operate the balance 140 and the escape wheel 1340 that rotate based on the rotation of the front train wheel, and the balance wheel 140 that repeats clockwise and counterclockwise rotations at regular intervals. And an ankle 142 that controls the rotation of the escape wheel 130 based on

 The balance 140 includes a balance 140a, a balance wheel 140b, and a hairspring 144c. Four balance arms 14 O f (referred to as “Amida”) for connecting the balance 140 a and the balance wheel 140 b are provided. The number of the balance arm portions 14Of may be two, three, or four or more.

 The hairspring 140 c is made of a resilient material having a spring property such as “Elimber”. That is, the hairspring 140c is made of a metal conductive material.

 Based on the rotation of the second wheel & pinion 1, 24, the cylindrical pinion 150 rotates simultaneously. The minute hand 15 2 attached to the barrel pinion 150 is configured to display “minute”. The cannon pinion 150 is provided with a slip mechanism having a predetermined slip torque with respect to the center wheel & pinion 124.

 The minute wheel (not shown) rotates based on the rotation of the cannon pinion 150. The hour wheel 154 rotates based on the rotation of the minute wheel. The hour hand 156 attached to the hour wheel 154 is configured to display "hour".

The barrel barrel 120 is supported rotatably with respect to the main plate 102 and barrel barrel 160. The second wheel 1 2 4, the third wheel 1 2 6, the fourth wheel 1 2 8, and the escape wheel 1 330 are supported so that they can rotate with respect to the main plate 10 2 and the train wheel bridge 16 2 Is done. The ankle 142 is supported rotatably with respect to the main plate 102 and the ankle receiver 164. The balance with hairspring 140 is rotatably supported with respect to the main plate 102 and the balance with hairspring 166. In other words, the upper part of the balance 140 a 1 It is supported so as to be rotatable with respect to the fixed balance upper bearing 16a. The balance-top bearing 1 66 a includes a balance-top stone and a balance-top stone. Top hole stones and top stones are made of insulating materials such as ruby.

 The lower border 140a2 of the balance 140a is rotatably supported with respect to the balance lower bearing 102b fixed to the main plate 102. The balance wheel bearing 102b includes a balance hole stone and a balance stone. Hypothetical pits and trowels are made of insulating materials such as ruby.

 The hairspring 140 c is a thin leaf spring having a spiral shape with a plurality of turns. The inner end of the hairspring 140 c is fixed to a beard ball 140 d fixed to a balance 140 a, and the outer end of the hairspring 140 c is a balance 16 1 It is fixed with a screw via a beard holder 170 a attached to a beard holder 170 rotatably fixed to the shaft. The balance 166 is made of a metal conductive material such as brass. C The beard holder 170 is made of a metal conductive material such as iron.

(4) Configuration of automatic winding section

 Next, the configuration of the automatic winding section of the mechanical timepiece of the present invention will be described.

 Referring to FIG. 6, the movement 300 comprises an automatic winding.

 Square hole wheel 1 16 is incorporated into the back cover side of barrel holder 160. The square hole 1 16a of the square wheel 1 16 is incorporated into the corner 1 20b of the barrel true 1 20a of the barrel car 1 20. Square screw 3 9 2 secures square hole wheel 1 16 to barrel box 120 a.

The oscillating weight 360 includes the ball bearing portion 362, the oscillating weight body 364, and the oscillating weight 366. The ball bearing section 36 2 includes an inner ring 36 8, a holding ring 37 0, and an outer ring 37 2, and a plurality of balls 37 4 are formed by the inner ring 36 8 and the holding ring 37 0 Built between 7 and 2. A rotating weight pinion 376 is provided on the outer periphery of the outer ring 37.2. The first transmission wheel 380 is rotatably incorporated in the barrel holder 160 and the main plate 102. The first transmission wheel 380 has a first transmission gear 380a, an upper guide shaft 380b, and a lower guide shaft 380c. The first transmission gear 380a is configured to mate with the rotary weight pinion 376. An eccentric shaft portion 380 d is provided between the first transmission gear 380 a and the upper guide shaft portion 380 Ob on the first transmission wheel 380. The upper guide shaft 38Ob is rotatably supported with respect to the barrel holder 160. The lower guide shaft portion 380c is rotatably supported on the main plate 102.

 The pawl lever 3882 is incorporated between the first transmission gear 3880a and the barrel holder 160. Therefore, the pawl lever 3882 is arranged on the back cover side of the barrel holder 160. The pawl lever 382 has a press pawl (not shown) and a pull pawl 382c. The guide hole 382a of the pawl lever 382 is rotatably incorporated in the eccentric shaft 380d. The transmission retainer 383 is mounted at a position closer to the lower guide shaft portion 380c than the eccentric shaft portion 380d of the first transmission wheel 380.

The second transmission wheel 384 is mounted on the back side of the barrel holder 160, and is rotatably mounted by the second transmission screw 385. The second transmission wheel 38.4 has a second transmission gear 38.4a and a second transmission pinion 38.4b. The second transmission gear 3 8 4a is formed in the form of a ratchet gear. The push pawl and pull pawl 3882c of the pawl lever 3882 engage this ratchet gear 3884a. When the second rotating pinion 3 8 4 b is engaged with the square hole wheel 1 16 and the _c- rotating weight 360 is rotated, the first rotating wheel 3 800 is rotated by the rotation of the rotating weight pin 3 76. The pawl lever 382 reciprocates based on the eccentric motion of the eccentric shaft section 380d by the rotation of the first transmission wheel 380, and the second transmission is carried out by the pressing and pulling pawls 380c. Turn car 3 8 4 in a certain direction. The rotation of the second transmission wheel 3 8 4 rotates the square hole wheel 1 16, and winds up the mainspring 120 c in the barrel box 120.

(5) Configuration of balance rotation detector Next, the configuration of the balance rotation detecting unit of the mechanical timepiece of the present invention will be described. Referring to FIG. 1 to FIG. 4 and FIG. 15, in order to measure the rotation operation of the balance arm 140 of the balance 140, the phototransistor 130 irradiates the balance arm 140 f. It is placed at the balance receiver 1 6 6. That is, the phototransistor 130 forms a light emitting unit.

 A photodiode 1332 is provided on the main plate 102 to receive the light illuminating the balance arm portion 140f. That is, the photodiodes 13 constitute a light receiving section. The light receiving section can be composed of, for example, a photodiode, an optical fino, a CCD, or the like.

 The phototransistor 13 0 (light emitting section) and the photodiode 13 2 (light receiving section) constitute a balance rotation detecting section 1 76.

 Governing section 144 includes balance 140 and balance magnet 140 e. Details of the balance magnet 140 e will be described later.

 Then, the balance arm portion 140f of the balance wheel 140 rotates between the phototransistor 130 and the photodiode 1332.

 When the balance arm portion 140f is located between the phototransistor 1330 and the photodiode 1332, light emitted from the phototransistor 1330 is blocked by the balance arm portion 14Of, and the photodiode It is configured not to be incident on 1 32. On the other hand, when the balance arm portion 140f is not located between the phototransistor 130 and the photodiode 1332, the light emitted from the phototransistor 130 is applied to the photodiode 1332. Configured to arrive.

Photodiode 1 32 is connected to IC 1 34. The IC 13 4 includes a balance rotation detection circuit 1Ί2 and a balance rotation control circuit 30 0. The balance rotation detection circuit 172 is configured to control the light emitted by the phototransistor 130. The balance rotation control circuit 3 06 measures the operation of the balance arm section 140 f, and It is configured to calculate a swing angle of zero.

 The balance rotation control circuit 303 stores in advance the relationship between the cycle of light incident on the photodiode 132 and the swing angle of the balance with hairspring. Therefore, the calculation of the swing angle of the balance 140 can be performed using the period of the light incident on the photodiode 132.

(6) Configuration of attitude detection unit of mechanical timepiece of the present invention

 Next, the configuration of the posture detection unit of the mechanical timepiece of the invention will be described.

 Referring to FIG. 15, a posture detection unit 361 is provided to detect whether the posture of the mechanical timepiece is a flat posture or a standing posture. The posture detecting section 361 includes a rotating weight 360, a posture detecting member 320, and a posture detecting electrode 322.

 (6-1) Configuration of Embodiment of Attitude Detector of Mechanical Watch of the Present Invention

 Hereinafter, a configuration of an embodiment of a posture detection unit of a mechanical timepiece of the present invention will be described. Referring to FIG. 7 to FIG. 10, the posture detecting member 320 is fixed to the outer periphery of the rotary weight 360. The rotating weight 360 is formed of a metal conductive material. The posture detecting member 320 is formed of a conductive material. The posture detecting member 320 is made of a metal spring material (elastic material) such as stainless steel. In the mechanical timepiece of the present invention, the posture detecting member 320 is electrically connected to one electrode and the positive electrode of the power storage member via the main plate, the receiving member, and the rotating weight 360.

 The back cover 3 1 2 is fixed to the case member 330. An attitude detection electrode 322 is provided on the inner surface of the outer periphery of the back cover 312 via an insulating portion. The posture detecting electrode 3222 is provided over the entire inner surface of the outer peripheral portion of the back cover 312 (over 360 degrees with respect to the center of the clock) via the insulating portion.

The posture detecting electrode 3 2 2 does not conduct with the back cover 3 12 and does not conduct with the case member 3 2 2. In addition, the posture detection electrode 3 2 2 does not conduct with the ground plate 102, and the receiving member 16 0, It does not conduct with 1 66 and does not conduct with the rotating weight 360.

Attach the posture detection weight 3 2 O w to the tip of the posture detection member 3 20 _c Change the position at which the posture detection weight 3 2 O w is attached to the posture detection member 3 20 and / or detect the posture By changing the mass of the weight 320 w, the condition of the posture of the mechanical timepiece at which the posture detecting member 320 comes in contact with the posture detecting electrode 322 changes. That is, by changing the position where the posture detection weight 32 Ow is attached to the posture detection member 320 and / or changing the mass of the posture detection weight 32 Ow, the posture detection member 320 can be obtained. The conditions for determining whether the mechanical timepiece that comes into contact with the posture detection electrode 3222 is in the flat posture or the standing posture can be changed.

 Referring to FIG. 15, the posture detection electrode 3 222 is connected to the balance rotation control circuit 303.

 Referring to FIGS. 9 and 10, when the mechanical timepiece is placed in a flat posture, the posture detecting member 320 does not contact the posture detecting member 22.

 Referring to FIG. 8, when the mechanical timepiece is placed in the upright position, the tip of the position detecting member 320 is bent, so that the position detecting member 320 contacts the position detecting electrode 3222. When the member 3 20 contacts the posture detection electrode 3 2 2, the posture detection electrode 3 2

Since 2 is electrically connected to the plus electrode, the signal that detects the standing posture is output from the balance rotation control circuit.

It is input to 306.

 With this configuration, it is possible to accurately detect whether the mechanical timepiece is arranged in a flat posture or in a standing posture.

When the mechanical timepiece is placed diagonally, the posture detection member 3 2 0 can be selected by appropriately selecting the elastic modulus of the posture detection member 32 and the mounting position or mass of the posture detection weight 32 Ow. 0 determines the critical angle of contact with the attitude detection electrode 3 2 2, and can detect whether the mechanical timepiece is placed in a flat attitude or an upright attitude. That is, when the mechanical timepiece is disposed obliquely at an angle between the horizontal arrangement and the critical angle, the posture detecting member 320 is set so that the posture detecting member 320 does not contact the posture detecting electrode 322. When the mechanical timepiece is composed of 320 and is arranged obliquely at an angle between the vertical arrangement and this critical angle, the posture detecting member 320 contacts the posture detecting electrode 3222. The posture detecting member 320 may be configured as described above.

(6-2) Configuration of Another Embodiment of Posture Detecting Unit of Mechanical Watch of the Present Invention

 Hereinafter, a configuration of another embodiment of the posture detecting unit of the mechanical timepiece of the present invention will be described. In the following description, only the difference between the embodiment of the posture detection unit of the mechanical timepiece of the present invention and the above-described embodiment of the posture detection unit of the mechanical timepiece of the invention will be described. Therefore, portions not described below are the same as those of the above-described embodiment of the posture detecting unit of the mechanical timepiece of the present invention.

 Referring to FIG. 11 to FIG. 14, the posture detecting member 3422 is provided on the outer periphery of the rotary weight 360. The posture detection member 342 is guided inside the guide member 338, and is configured to exit from the outer peripheral portion of the rotary weight 360 by the mass of the spherical pushing member 340. The posture detecting member 342, the guide member 338, and the spherical pressing member 340 are formed of a metal material such as stainless steel. In the mechanical timepiece of the present invention, the posture detecting member 342 is electrically connected to one of the electrodes and the positive electrode of the power storage member via the ground plate, the receiving member, and the rotating weight 360.

 A return spring 344 is provided inside the guide member 338 for pushing the posture detecting member 342 back from the outer peripheral portion of the rotary weight 360 toward the center.

The back cover 3 1 2 is fixed to the case member 330. An attitude detection electrode 3222 is provided on the inner surface of the outer periphery of the back cover 3.12. The posture detecting electrode 3222 is provided over the entire inner surface of the outer peripheral portion of the back cover 312 (over 360 degrees with respect to the center of the clock) via the insulating portion. Referring to FIGS. 13 and 14, when the mechanical timepiece is placed in a flat posture, the posture detecting member 342 does not contact the posture detecting electrode 322.

 Referring to Fig. 12, when the mechanical watch is placed in the upright position, the return spring 3 4 4 is bent by the mass of the spherical push member 3 40, and the position detecting member 3 4 2 detects the position. Touch 2

 When the posture detecting member 320 contacts the posture detecting electrode 322, the posture detecting electrode 322 conducts with the plus electrode, so that a signal for detecting the standing posture is input to the balance rotation control circuit 306. You.

 Also with this configuration, it is possible to accurately detect whether the mechanical timepiece is arranged in a flat posture or in a standing position.

 When the mechanical timepiece is placed diagonally, the posture detecting member 3442 can detect the posture by appropriately selecting the spring constant of the return spring 344 and the mass of the spherical pressing member 340. By determining the critical angle in contact with the working electrode 3222, it is possible to detect whether the mechanical timepiece is placed in a flat posture or in a standing posture.

 In other words, when the mechanical timepiece is placed obliquely at an angle between the horizontal position and this critical angle, a spherical pushing is performed so that the posture detecting member 342 does not contact the posture detecting electrode 322. When the mechanical timepiece is arranged at an angle between the vertical arrangement and this critical angle, the posture detection member 3 constitutes the member 340, the posture detection member 324, and the return spring 344. The spherical pressing member 340, the posture detecting member 342, and the return spring 344 may be configured so that the posture detecting electrode 322 contacts the posture detecting electrode 322.

(7) Configuration of power generation unit and power storage unit

 Next, the configuration of the power generation unit and the power storage unit of the mechanical timepiece of the invention will be described.

The secondary battery 1 36 for operating the IC 1 34 is fixed to the main plate 102. The secondary battery 13 6 constitutes a power storage unit 13 7. That is, the storage unit 1 3 7 is an IC Configure the power supply to operate 1 3 4. The power storage unit 137 may be composed of a secondary battery or a capacitor. Alternatively, a primary battery can be used instead of the power storage unit 1337.

To charge the secondary battery 1 3 6 power storage unit 1 3 7, _c power generating unit 1 5 0 power generation portion 1 5 0 is provided, manual winding power generating mechanism for generating a voltage by the rotation of the winding stem 1 0 2 Or a self-winding power generating mechanism that generates a voltage by the rotation of the rotary weight.

 The power generation section 150 may be arranged on the “back side” of the movement 300 or may be arranged on the “front side” of the movement 300.

 The structure of the power generation unit 150 is not shown in FIG. 1 because the same structure as the conventional structure can be used.

 FIG. 6 shows a schematic configuration when the power generation unit 150 is configured by a manually wound power generation mechanism. Referring to FIG. 6, the power generation unit 150 includes a hoisting mechanism 15 2 that operates by the rotation of the winding stem 102, and a gear train 15 that transmits the rotation of the hoisting mechanism 15 2 at an increased speed. 4, a rotatable wheel 1556 rotating by the rotation of the gear train 15 4; It includes a generating coil 158 that generates an electromotive force by the rotation of the evening 156, and a rectifying circuit 160 for rectifying the current generated in the generating coil 158. The current rectified by the rectifier circuit 160 flows to the secondary battery 136 constituting the power storage unit 137. A capacitor may be used instead of the secondary battery 1 36. The rectification operation performed by the rectifier circuit 160 may be half-wave rectification or full-wave rectification. The rectifier circuit can be built in the IC 134, or may be provided separately from the IC 134.

When the power generation unit is configured by an automatic winding power generation mechanism, the power generation unit includes a rotating weight, a speed increasing gear train that transmits the rotation of the rotating weight at an increased speed, and a rotor rotating by the rotation of the speed increasing gear train. One stage with a low hole facing the rotor's low magnet, and one rotation of the mouth And a rectifying circuit for rectifying the current generated in the generating coil. The current rectified by the rectifier circuit is configured to flow to the secondary battery 136.

 Since the mechanical timepiece of the present invention includes the oscillating weight 360, the power generation unit can be configured with an automatic winding generator system.

 For example, an electronic wristwatch with a power generating device is disclosed in Japanese Patent Application Laid-Open Nos. 61-26689 and 61-293143, and a mobile watch with a charging function is disclosed in Japanese Patent Application No. 61-288192.

 As a modification, it is possible to use a battery (primary battery) such as a silver battery or a lithium battery so that the power generation mechanism is not used.

(8) Structure of braking part

 Next, the configuration of the braking unit of the mechanical timepiece according to the present invention will be described.

 Coinoles 180a and 18 Ob are mounted on the front surface of the main plate 102 so as to face the main plate side surfaces of the balance wheel 140b. The coils 180a and 180b constitute the control unit 146. The number of coils is, for example, two, as shown in FIGS. 1 to 4, but may be one, two, three, or four. There may be more than one.

 A balance magnet 140e is attached to the side of the base plate of the balance wheel 14 ° b so as to face the front surface of the base plate 102.

As shown in FIGS. 1 and 3, when a plurality of coils 180a and 180b are arranged, the circumferential distance between the coils 180a and 180b is set to be opposite to the coils 180a and 180b. It is preferably an integral multiple of the circumferential distance between the S pole and the N pole of the magnet 140e, but not all coils need to have the same circumferential distance. Furthermore, in such a configuration having a plurality of coils, The wiring between the coils should be wired in series so that the current generated in each coil by electromagnetic induction does not cancel each other. Alternatively, the wiring between the respective coils may be arranged in parallel so that the currents generated in the respective coils due to the electromagnetic induction do not cancel each other.

 Referring to FIG. 5, the balance magnet 140 e has an annular shape (ring shape), and has, for example, 12 S poles 140 s 1 polarized vertically along its circumferential direction. Magnets consisting of ~ 1400s12 and 12 N poles 1400n1 ~ 1400n12 are alternately provided. The number of magnets arranged in an annular shape (ring shape) in the balance magnet 140 e is 12 in the example shown in FIG. 5, but may be any number of 2 or more. Here, it is preferable that the length of one chord of the magnet part is substantially equal to the outer diameter of one coil provided facing the magnet part.

 A gap is provided between the balance magnet 140 e and the coils 180 a and 180 b. The gap between the balance magnet 140 e and the coils 180 a and 180 ob is that when the coils 180 a and 180 ob are conducting, the magnetic force of the balance magnet 140 e is It has been determined that coils 180a and 180b can be affected.

 When the coils 180a and 180b are not conducting, the magnetic force of the balance magnet 140e does not affect the coils 180a and 180b. The balance magnet 140 e has a balance wheel 140 with one surface in contact with the ring-shaped rim of the balance wheel 140 b and the other surface facing the front surface of the main plate 102. It is fixed to the base plate side of 0b by bonding or the like.

 A first lead wire 182 is provided to connect one terminal of the coil 180a to the first coil terminal of the IC 134. A second lead wire 184 is provided to connect one terminal of the coil 180 to the second coil terminal of the IC 134.

The thickness of the hairspring 140 c (the thickness in the radial direction of the balance with hairspring) is, for example, 0.021 millimeter. The balance magnet 140 e has an outer diameter of about 9 mm, for example. It has a diameter of about 7 millimeters, a thickness of about 1 millimeter, and a magnetic flux density of about 0.02 Tesla. Each of the coils 180a and 180b has, for example, eight turns, and a coil wire diameter of about 25 micrometers. The gap between the balance magnet 140e and the coils 180a and 180Ob is, for example, about 0.4 millimeter.

(9) Functions of the attitude detector, balance rotation detector, and brake

 Next, the operation of the attitude detecting unit, balance rotation detecting unit, and braking unit of the mechanical timepiece of the present invention will be described.

 Referring to FIGS. 1 to 4, when the coils 180a and 180b are not conducting, that is, when the circuit including the coils 180a and 180b is open. The operation of the balance 140 will be described.

The hairspring 140 c expands and contracts in the radial direction of the hairspring 140 c according to the rotation angle of the balance 140. For example, in the state shown in FIG. 3, when the balance 140 rotates clockwise, the hairspring 140 c contracts in the direction toward the center of the balance 140, whereas the balance 140 4 certain threshold but when you rotate in the counterclockwise direction, the rotation angle of the _c balance 1 4 0 that extends in a direction away from the center of the balance spring 1 4 0 c Watenpu 1 4 0 (swing angle), with For example, when the angle is less than 180 degrees, the coils 180a and 180Ob are configured not to conduct by the operation of the balance rotation control circuit 360.

 Next, the operation of the balance 140 when the coils 180a and 180b are conducting, that is, when the circuit including the coil 180a and 180Ob is closed, will be described. . That is, when the swing angle of the balance 140 is 180 degrees or more, the coils 180a and 180Ob are configured to conduct.

When the swing angle of the balance 140 exceeds 180 degrees, the balance rotation control circuit By operation, the coils 180a and 180b conduct, and the induced current generated by the change in the magnetic flux of the balance magnet 140e generates a force that suppresses the rotational movement of the balance 1400. Affects 40. The balance rotation control circuit 303, the coils 180a and 180b, and the balance magnet 140e apply a braking force to the balance 140 to suppress the rotation of the balance 140. The balance 140 is configured to reduce the swing angle.

 When the swing angle of the balance with hairspring 140 decreases from 0 degree to a range of less than 180 degrees, the operation of the balance rotation control circuit 360 causes the coils 180a and 180b to be turned off. It is configured not to conduct. Therefore, when the swing angle of the balance 140 exceeds 180 degrees and is less than 180 degrees, the coils 180a and 180b do not conduct, and the rotational movement of the balance 140 is suppressed. Such a force does not affect the balance 140.

 Next, the operation of the balance rotation detecting unit and the braking unit in the mechanical timepiece of the present invention will be described.

 Referring to FIGS. 15 and 16, the operation of the balance with hairspring detection circuit 172 starts the rotation detection of the balance with hairspring (step S31).

 The balance rotation detecting circuit 17 2 determines the time for detecting the swing angle of the balance with hairspring (step S32). Determination of the detection time of the swing angle of the balance with hairspring is performed by, for example, a counter. The set time for performing the balance rotation detection is stored in advance in the balance rotation detection circuit 1-2.

The set time for detecting the rotation of the balance with hairspring is, for example, about 1 hour. The set time for performing the rotation detection of the balance with hairspring is preferably about 0.25 to 6 hours, more preferably about 0.5 to 3 hours, and even more preferably about 1 to 2 hours. . When the balance rotation detection circuit 172 determines that the set time has elapsed, the balance rotation detection circuit 172 turns on the phototransistor 130 (step S33). If the balance rotation detecting circuit 1 7 2 determines that the set time has not elapsed, the process proceeds to step S 32. And repeat the operation of determining the detection time.

 In step S33, when the balance rotation detection circuit 172 turns on the phototransistor 130, the balance rotation control circuit 360 uses the light incident on the photodiode 1332 to control the balance arm 1 Measure the operating condition of the 400 f and calculate the swing angle of the balance 140.

 The balance rotation control circuit 360 stores in advance the relationship between the period of light incident on the photodiode 1332 and the swing angle of the balance with hair. This is performed using the cycle of light incident on the diode 1 32.

 When the balance rotation control circuit 306 determines that the swing angle of the balance 140 is equal to or larger than the set angle, the balance rotation detection circuit 172 turns off the phototransistor 130 (step S35).

 Next, the balance rotation control circuit 303 detects the attitude of the mechanical timepiece (step S38), and determines whether the mechanical timepiece is in the upright position or the flat position (step S39). c) That is, the balance rotation control circuit 303 determines whether or not there is a signal indicating the standing posture output from the posture detecting electrode 322 when the posture detecting member 320 contacts the posture detecting electrode 322. To detect whether the mechanical watch is in the upright position or the flat position. Here, for example, in the balance rotation control circuit 306, the signal indicating the standing posture, which is output from the posture detecting electrode 322, is output as a threshold value for a fixed detection time, for example, continuously for 5 seconds. The mechanical watch determines that the mechanical watch is in the upright position, and the signal indicating the upright position output by the posture detection << ¾ 3 222 for a certain detection time threshold, for example, is not output continuously for 5 seconds It is configured to determine that the mechanical timepiece is in the flat posture.

If the signal indicating the standing posture output from the posture detecting electrodes 3 2 2 is not output continuously for 5 seconds, and the state where the signal indicating the standing posture is not output does not continue continuously for 5 seconds. For example, when the posture detection electrode 3222 first outputs a signal indicating a standing posture, the balance rotation control circuit 303 determines that the mechanical watch is in the standing posture, and When the output electrode 322 initially does not output a signal indicating the standing posture, it is configured to determine that the mechanical timepiece is in the flat posture.

 When the attitude of the mechanical watch is determined based on the signal output from the attitude detection electrode 3 22 first, the threshold value of the time limit to be determined in this way is output from the attitude detection electrode 3 22 It is preferable that the signal is set to be about 3 to 4 times the threshold value of the continuous detection time.

 With this configuration, it is possible to reliably detect the position of the mechanical timepiece by eliminating the influence of the change of the position of the position detecting member 320 on the position detecting electrode 322.

 If the balance rotation control circuit 306 detects that the mechanical timepiece is in the flat posture, the balance rotation control circuit 306 determines the operating conditions for the flat posture so that the balance 1801a, 1 8 Ob is made conductive (step S40). When the coils 180 a and 180 Ob are made conductive, an induced current is generated by a change in the magnetic flux of the balance magnet 140 e, and a force that suppresses the rotational movement of the balance 140 is generated. Effect. The swing angle of the balance with hairspring 140 is reduced by applying a braking force to the balance with balance 140 to suppress the rotation of the balance with hairspring 140.

 The operating condition for the flat posture for the balance rotation control circuit 303 to conduct the coils 180a and 180b to reduce the swing angle of the balance 140 is determined in advance by experiments. It is better to store it in the balance rotation control circuit 303.

If the balance rotation control circuit 306 detects that the mechanical timepiece is in the upright position, the balance rotation control circuit 406 determines the coils 180 a, 1 Conduct 8 Ob (step S41). When the coils 180a and 180b are turned on, an induced current is generated by a change in the magnetic flux of the balance magnet 140e, and a force that suppresses the rotational movement of the balance 140 is generated. Effect. Then, a braking force for suppressing the rotation of the balance with hairspring 140 is applied to the balance with hairspring 140. As a result, the swing angle of the balance 140 decreases.

 The operating conditions for the standing posture for the balance rotation control circuit 303 to conduct the coils 180a and 180b and to reduce the swing angle of the balance 140 are also obtained by experiments in advance. It is better to store it in the balance rotation control circuit 303.

 When the balance rotation control circuit 306 conducts the coils 180a and 180b, the balance rotation control circuit 306 determines the time for detecting the posture of the mechanical timepiece. (Step S42). The determination of the detection time for detecting the posture is performed by, for example, a counter. The set time at which the posture is to be detected is stored in advance in the balance rotation control circuit 406.

 The set time for detecting the attitude of the mechanical clock is, for example, about 10 minutes. The set time for detecting the posture is preferably about 1 to 60 minutes, more preferably about 5 to 30 minutes, and even more preferably about 10 to 15 minutes. .

 In the present invention, the set time for detecting the posture of the mechanical timepiece is set to be shorter than the set time for detecting the rotation of the balance with hairspring described above. For example, when the set time for detecting the posture of the mechanical timepiece is about 10 minutes, the set time for detecting the rotation of the balance with hairspring is preferably 1 hour.

 When the balance rotation control circuit 306 determines that the set time for detecting the posture has elapsed, the balance rotation detection circuit 172 determines again the time for detecting the swing angle of the balance with hairspring (step S). 4 3). The determination of the detection time of the swing angle of the balance with hairspring is performed, for example, by a clock. The set time for performing the balance rotation detection is stored in advance in the balance rotation detecting circuit 172.

 The set time for detecting the rotation of the balance with hairspring is, for example, about 1 hour. The set time for performing the balance rotation detection is the same as the set time described above.

The balance rotation control circuit 303 has not passed the set time for detecting the posture. If so, the process returns to step S42. Then, the operation of determining the detection time for detecting the posture is repeated.

 When the balance rotation detecting circuit 172 determines that the set time for detecting the swing angle has elapsed, the process returns to step S33.

 When the balance rotation detecting circuits 1 and 2 determine that the set time for detecting the swing angle has not elapsed, the process returns to step S58.

 The relationship between the time during which the balance rotation control circuit 306 conducts the coils 180a and 180b and the swing angle of the balance balance 140 is determined in advance by experiments, and the result is used as the balance rotation control. It is stored in the circuit 306.

 The set angle of the swing angle of the balance with hairspring 140 is stored in the balance with hairspring rotation control circuit 406 in advance. The setting angle of the swing angle of the balance 140 is, for example, 180 degrees. The set angle of the swing angle of the balance 140 is preferably 150 to 210 degrees. In step S34, when the balance with hairspring rotation control circuit 306 determines that the swing angle of the balance with hairspring 140 is smaller than the set angle, the balance with hairspring rotation detection circuit 272 applies an voltage to the capacitance section. Is turned off (step S36). In this case, the balance rotation control circuit 306 does not conduct the coils 180a and 180b (step S37).

 Then, returning to step S32, the operation of determining the detection time is repeated. Therefore, in the mechanical timepiece of the present invention, the swing angle of the balance 140 can be accurately and efficiently controlled by $ ij.

(10) Configuration of Circuit Used in Mechanical Watch of the Present Invention

Further, in the embodiment of the mechanical timepiece of the present invention, circuits for performing various functions may be configured in the IC, and the IC may be a PLA-IC incorporating programs for performing various operations. Good. In the embodiment of the mechanical timepiece of the present invention, if necessary, an external element such as a resistor, a capacitor, a coil, a diode, a transistor, etc. can be used together with the IC.

(11) Effects of the present invention

 As described above, the present invention provides a balance with a balance with an escapement / governing device that repeats clockwise and counterclockwise rotation, an escape wheel and wheel that rotates based on the rotation of a front train wheel, and In a mechanical timepiece configured to include an ankle for controlling the rotation of a balance wheel, an attitude detection unit for detecting the attitude of the mechanical timepiece and a balance rotation for detecting a swing angle of the balance with hairspring. Since the detection unit and the braking unit for controlling the rotation angle of the balance with hairspring are provided, the accuracy of the mechanical timepiece can be improved without reducing the duration of the mechanical timepiece.

 That is, in the present invention, by focusing on the correlation between the instantaneous rate and the swing angle, and keeping the swing angle constant, the change in the instantaneous rate is suppressed, and the advance and delay of the clock per day are reduced. Was adjusted as follows.

 In contrast, in conventional mechanical watches, the swing angle changes over time due to the relationship between the duration and the swing angle. Furthermore, the instantaneous rate changes over time due to the relationship between the swing angle and the instantaneous rate. For this reason, it was difficult to maintain a certain level of accuracy and to extend the duration of the clock.

(1 2) Simulation on instantaneous rate

Next, the results of a simulation on the instantaneous rate performed on the mechanical timepiece of the present invention developed to solve the problem of the conventional mechanical timepiece will be described with reference to FIG. 22. First, as shown by the thin line in Fig. 22, the watch is adjusted to a state in which the instantaneous rate of the mechanical watch is advanced. That is, in the mechanical timepiece of the present invention, as shown by the thin line in FIG. 22, the rate of the flat posture in the state in which the coil spring is completely wound up is about 23 seconds / day (about 23 seconds per day). Second), the rate of standing posture is about 18 seconds / day (about 18 seconds per day), and after 20 hours from the full winding state, the rate of flat posture is about 17 seconds / day Nari (approximately 17 seconds per day), the rate of standing posture is about 13 seconds / day (approximately 13 seconds per day), and the rate of standing posture after 30 hours from the full winding state Is about 2 seconds / day (about 2 seconds delay per day), and the flat rate is about 13 seconds / day (about 3 seconds delay per day).

 In the mechanical timepiece of the present invention, when the braking unit is operated, 27 hours have elapsed from the state in which the braking unit is activated, that is, the state in which the mainspring is completely wound up, as indicated by the thick line in FIG. Until then, the instantaneous rate can be maintained at about 5 seconds / state (maintain the state advanced by about 5 seconds per day), and after 30 hours from the full winding state, the instantaneous rate is about 12 seconds ^ / (I say about 2 seconds late).

 The mechanical timepiece having the balance with hairspring rotation angle control mechanism of the present invention controls the instantaneous rate of the timepiece by controlling the swing angle of the balance with hairspring. Compared to a watch, the instantaneous rate can be increased from about 0 to 5 seconds Z days since the entire volume.

 That is, in the mechanical timepiece of the present invention, the duration at which the instantaneous rate is within about ± 5 seconds / day is about 32 hours. The value of this duration is about 1.45 times the duration of about 22 hours, where the instantaneous rate of a conventional mechanical watch is within about plus or minus 5 seconds / word.

 Such control of the swing angle of the balance with hair in the mechanical timepiece of the present invention is performed in consideration of the attitude of the mechanical timepiece.

Therefore, a simulation result was obtained in which the mechanical timepiece of the present invention was much more accurate than the conventional mechanical timepiece. [Industrial applicability]

 The mechanical timepiece of the present invention has a simple structure and is suitable for realizing a highly accurate mechanical timepiece.

 Furthermore, the mechanical timepiece of the present invention includes an attitude detection unit for detecting the attitude of the mechanical timepiece, and a balance rotation detection unit for detecting the swing angle of the balance with light detection. Manufacturing and rate adjustment are very easy.

Three

Claims

 The scope of the claims 1. The mainspring that constitutes the power source of the mechanical timepiece, the front train wheel that rotates by the rotational force when the mainspring is unwound, and the escapement / governing device that controls the rotation of the front train wheel The escapement and speed governor are equipped with a balance that alternates between clockwise and counterclockwise rotation, an escape wheel that rotates based on the rotation of the front train wheel, and an escape wheel that rotates based on the operation of the balance. And a pallet rotation detection unit provided to detect the swing angle of the balance with hairspring by detecting the operating state of the balance with light using light. (176) and  An attitude detector (361) for detecting the attitude of the mechanical watch,  When the swing angle of the balance with hairspring (140) detected by the balance rotation detection unit (176) is equal to or greater than a preset angle, the balance is detected based on a signal related to the posture of the mechanical watch detected by the posture detection unit (361). A braking unit (146) configured to apply a force to the balance (140) to suppress rotation of the balance (140); A mechanical timepiece comprising:  2. The balance rotation detector (176) has a light emitting unit (130) for illuminating the balance arm (140f) and a light receiving unit for receiving light illuminating the balance arm (14Of). The mechanical timepiece according to claim 1, characterized in that it comprises a part (132). 3. The braking portion (146) includes a coil (180a, 180b) arranged so as to be able to brake the movement of the balance magnet (140e) provided on the balance (140). The mechanical timepiece according to claim 1 or 2, wherein 4. Measure the operation of the balance rotation detection circuit (172) and the balance arm (140f) configured to control the light emitted by the light emitting unit (130), and measure the balance with the balance. A balance rotation control circuit configured to calculate the swing angle of (140) (306) With  When the swing angle of the balance with hairspring (140) is smaller than a certain threshold value, the balance rotation control circuit (306) does not conduct the coils (180a, 180b), and the balance of the balance with hairspring (140) If the swing angle is greater than or equal to the certain threshold, the coil (180a, 180b) is configured to conduct. 4. The mechanical timepiece according to claim 3, wherein:  5. The mechanical timepiece according to claim 4, further comprising a balance rotation detection circuit (172) and a power storage unit (137) for operating the balance rotation control circuit (306).  6. The mechanical timepiece according to claim 5, further comprising a power generation unit (150) for charging the power storage unit (137).  7. The posture detecting section (361) is composed of a rotating weight (360), a posture detecting member (320) provided on the rotating weight (360), and a posture detecting member (320) when the mechanical timepiece is in an upright posture. 6. The mechanical timepiece according to claim 4, further comprising an attitude detection electrode (322) for outputting a detection signal to the balance rotation control circuit (306) in contact with the balance. .  8. The attitude detection unit (361) includes a oscillating weight (360), an attitude detection member (352) provided on the oscillating weight (360), and an attitude detection member (352) when the mechanical timepiece is in an upright attitude. ) And the posture detection electrode (322) to output a detection signal to the balance rotation control circuit (306) and the posture detection member (352) when the mechanical watch is in the flat posture. A return spring (344) provided to prevent contact with the detection electrode (322), and a contact between the posture detection member (352) and the posture detection electrode (322) when the mechanical timepiece is in the upright position. 6. The mechanical timepiece according to claim 4, wherein the mechanical timepiece includes a spherical pressing member (34 0).