WO2001035172A1

WO2001035172A1 - Mechanical timepiece with timed annular balance rotating angle control mechanism including coils

Info

Publication number: WO2001035172A1
Application number: PCT/JP1999/006293
Authority: WO
Inventors: Saburo Manaka; Koichiro Jujo; Takeshi Tokoro
Original assignee: Seiko Instruments Inc.
Priority date: 1999-11-11
Filing date: 1999-11-11
Publication date: 2001-05-17
Also published as: EP1143308A1; CN1333886A

Abstract

A mechanical timepiece, comprising a movement (600) including a movement barrel (120), a center wheel (124), a third wheel (126), a second wheel (128), a timed annular balance (140), an escape wheel (130), and a pallet fork (142), a plurality of coils (180, 180a, 180b, 180c) being installed on a coil support (616), a circuit substrate (612) being installed on the coil support (616), the plurality of coils (180, 180a, 180b, 180c) being installed on the front surface of a main plate (102) and conducted through the pattern of the circuit substrate (612), 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), a clearance between the balance magnet (140e) and the coil (180) being determined so that the magnet flux of the balance magnet (140e) affects the coil (180) when the coil (180) is energized, the winding parts of the plurality of coils (180, 180a, 180b, 180c) being disposed on the balance magnet (140e) side of the circuit substrate (712).

Description

Description Mechanical watch with coil balance rotation angle control mechanism including coil

〔Technical field〕

The present invention relates to a mechanical timepiece with a balance rotation angle control mechanism configured to apply a force to suppress the rotation of the balance with hairspring to the balance with hairspring.

In particular, the present invention relates to a mechanical timepiece with a balance rotation angle control mechanism including a balance magnet provided on a balance with hairspring and a coil arranged so as to be associated with the balance with hairspring.

(Background technology)

In a conventional mechanical timepiece, as shown in FIGS. 13 and 14, the 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. 14) 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”.

Welding 1 1 9 0, Lever 1 1 9 2, Lever spring 1 1 9 4, Back holder

The switching device including 1196 determines the axial position of the winding stem 1110. The wheel 1 1 1 2 is rotatably provided on the guide shaft of the winding 1 1 1 1 0. The winding 1 1 1 0 When the winding pin 1 110 is rotated in the first winding position (0th stage) closest to the inside of the movement along the rotation axis direction, the rotation of the wheel The car 1 1 1 2 rotates through. 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. By ratchet wheel 1 1 1 6 is rotating, the movement barrel 1 1 2 0 mainspring housed in 1 1 2 2 winds _c second wheel 1 1 2 4, by rotation of the barrel complete 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 1140 includes a balance 1114a, a balance wheel 1140Ob, 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 cylinder pinion 1 1 50 is provided with a slip mechanism for the center wheel 1 1 2 4. 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, the escape wheel 1 1 3 0, 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 1 140 c is a thin leaf spring having a spiral shape with 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 1 4 0 c is fixed to the fixed beard ball 1 1 4 0 d and the beard holder 1 1 7 0 attached to the balance 1 1 7 6 It is fixed by screwing via 170a.

A speed / recess needle 1 16 8 is rotatably mounted on the balance with hairspring 1 1 6 6. The beard holder 1 1 6 8 a and the beard bar 1 1 6 8 are attached to the needle 1 1 6 8. A portion near the outer end of the hairspring 1140c is located between the beard holder 1168a and the beard bar 1168b.

In general, in a typical conventional mechanical watch, as shown in Fig. 8, the mainspring torque is gradually increased as the mainspring is unwound from a state in which the mainspring is completely wound up (full winding state) and the duration elapses. Decreases. For example, in the case of FIG. 8, 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 becomes 4 g · cm from the fully wound state. Approximately 18 g · cm after 0 hours.

Generally, in a typical conventional mechanical timepiece, as shown in Fig. 9, when the mainspring torque decreases, the swing angle of the balance with hairspring also decreases. For example, in the case of Fig. 9, when the mainspring torque is 25 to 28 gcm, the swing angle of the balance with hairspring is about 240 to 270 degrees, and the mainspring torque is 20 to 25 g. · At cm, the swing angle of the balance with hairspring is about 180-240 degrees.

Referring to FIG. 10, there is shown a transition of an instantaneous rate (a numerical value indicating the precision of a watch) with respect to a swing angle of a 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. 10, the swing angle of the balance

When it is higher than 240 degrees or lower than 200 degrees, the instantaneous rate is delayed.

For example, in a typical conventional mechanical watch, as shown in Fig. 10, When the angle is about 200-240 degrees, the instantaneous rate is about 0-5 seconds / day (about 0-5ίΦ per day), but the swing angle of the balance is about 170 In degrees, the instantaneous rate is about-20 seconds / day (about 20 seconds behind each day).

Referring to FIG. 12, there is shown a transition of an elapsed time and an instantaneous rate when the mainspring is rewinded from a 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 over 24 hours, which is shown by the extra fine line in Fig. 12 with respect to the elapsed time when the mainspring was unwound from all windings.

Generally, in a conventional mechanical timepiece, the mainspring torque is reduced and the swing angle of the balance with hairspring decreases as the duration of the mainspring is unwound from the fully wound state, so that the instantaneous rate is delayed. . For this reason, in the case of a conventional mechanical watch, the instantaneous rate when the mainspring is fully wound is advanced in advance in anticipation of the delay of the watch after the elapse of 24 hours, and the clock per day It was adjusted in advance so that the "rate", which indicates the progress of the watch or the delay of the clock, became positive.

For example, in a typical conventional mechanical timepiece, as shown by the extra-fine line in Fig. 12, the instantaneous rate is about 3 seconds / day in the fully wound state (about 3 seconds per day). Twenty hours after the winding state, the instantaneous rate is about -3 seconds / statement (about three seconds behind each state), and after twenty-four hours from the full winding state, the instantaneous rate is about -8 seconds / day ( After about 30 seconds from the full winding state, the instantaneous rate is about 16 seconds / day (about 16 seconds late per day).

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 Application Publication No. 544-141675.

Further, as shown in FIG. 36, the conventional coreless motor 210 has a shaft 210, a magnet yoke 210 fixed to the shaft 210, and a magnet yoke 210. 4 and a drive magnet 210 fixed to 4. A stay yoke 2 1 1 ◦ is provided rotatably with respect to the shaft 2 1 0 2 via a bearing 2 1 1 2. The printed circuit board 2 1 1 4 is fixed to the stay yoke 2 110. The drive coil 2 116 is fixed to the printed circuit board 2 114 so as to face the drive magnet 210 and to be spaced apart therefrom. By applying a current to the drive coil 211, the drive magnet 210, the magnet yoke 210 and the shaft 210 are configured to rotate.

An object of the present invention is to provide a mechanical timepiece provided with a balance rotation angle control mechanism that can control a swing angle of a balance with hairspring to fall within a certain range.

It is a further object of the present invention to provide a highly accurate mechanical timepiece by providing a new balance with hairspring rotation angle control mechanism so that the change in the rate is small even after a lapse of time from the fully wound state.

Further, an object of the present invention is to configure a balance rotation angle control mechanism so as to include a balance magnet provided on the balance with hairspring and a coil arranged in relation to the balance with hairspring magnet. It is to provide a mechanical watch configured as such.

[Disclosure of the Invention]

The present invention provides a main plate constituting a substrate of a mechanical timepiece, a mainspring constituting a power source of the mechanical timepiece, a front wheel train rotated by a rotational force when the mainspring is unwound, and a rotation of the front wheel train. The escapement / governing device is equipped with a balance wheel that alternates between clockwise and counterclockwise rotation, and a spring wheel that rotates based on the rotation of the front train wheel. A mechanical timepiece configured to include an pallet for controlling rotation of the escape wheel & pinion based on the operation of the balance with hairspring. Output, the balance rotation angle exceeds the predetermined threshold A switch mechanism configured to output an off signal when the switch is not in operation, and a force that suppresses the rotation of the balance with hair when the switch mechanism outputs an on signal. In such a mechanical timepiece of the present invention configured to include a balance rotation angle control mechanism, the switch mechanism is turned on when the hairspring provided on the balance with hair balance comes into contact with a contact member constituting the switch lever. It is configured to output the signal of

In the mechanical timepiece according to the present invention, the balance with hairspring rotation angle control mechanism includes a balance magnet provided on the balance with hairspread, and a plurality of coils arranged so as to exert a magnetic force on the balance with hairspring, The coil is configured so that when the switch mechanism outputs an ON signal, a magnetic force is applied to the balance magnet to suppress rotation of the balance with hairspring, and that when the switch mechanism outputs an OFF signal, the magnetic force is not applied to the balance magnet. Have been. Further, the mechanical timepiece of the present invention includes a circuit board having a pattern for conducting a plurality of coils.

The winding portions of the plurality of coils are configured to be disposed on the balance magnet side of the circuit board.

By using the balance rotation angle control mechanism configured in this manner, the rotation angle of the balance with the mechanical watch can be effectively controlled, thereby improving the accuracy of the mechanical watch. it can.

In the mechanical timepiece of the present invention, it is preferable that the plurality of coils be configured to be attached to the coil receiver.

In the mechanical timepiece of the present invention, it is preferable that the circuit board is mounted on the coil receiver, and the coil receiver is guided by a bearing member provided on the main plate. Further, in the mechanical timepiece of the present invention, the plurality of coils are attached to separately provided coil receivers, the coil receivers are respectively attached to circuit boards, and the coil receivers are respectively provided on the ground plane. Guide holes Preferably.

Further, in the mechanical timepiece of the present invention, the circuit board has a pattern for conducting a plurality of coils on one side thereof, and a lead wire for conducting the switching mechanism is connected to the other side. In the mechanical timepiece of the present invention, the plurality of coils are configured to be connected in series by a pattern provided on a circuit board. Is preferred.

With this configuration, a plurality of coils can be efficiently arranged in a small space, and the plurality of coils can be reliably conducted. Further, in the mechanical timepiece of the present invention, the switch mechanism includes a first contact member and a second contact member, and includes an adjustment device for changing a distance between the first contact member and the second contact member. It is preferable to provide a further provision.

Further, in the mechanical timepiece of the present invention, the switch mechanism includes the first contact member and the second contact member, for simultaneously moving the first contact member and the second contact member with respect to the rotation center of the balance with hairspring. It is preferable to further comprise the adjusting device of (1).

With this configuration, the positions of the first contact member and the second contact member with respect to the portion near the outer end of the hairspring, and the distance between the first contact member and the second contact member can be effectively reduced. Can be adjusted.

[Brief description of drawings]

FIG. 1 is a plan view showing a schematic configuration of a front side of a movement in a first embodiment of a mechanical timepiece of the present invention (in FIG. 1, some parts are omitted, and a receiving member is a virtual member). Lines).

FIG. 2 is a schematic partial cross-sectional view of the movement in the first embodiment of the mechanical timepiece of the present invention (in FIG. 2, some parts are omitted).

FIG. 3 shows a first embodiment of the mechanical timepiece of the present invention, in which the switch mechanism is FIG. 3 is an enlarged partial plan view showing the schematic shape of the balance with hairspring (in FIG. 3, a part of the circuit board is cut away to show a part of the shape of the coil).

FIG. 4 is an enlarged partial cross-sectional view showing the schematic shape of the balance with hair in a state where the switch mechanism is off in the first embodiment of the mechanical timepiece of the present invention.

FIG. 5 is an enlarged partial plan view showing a schematic shape of a balance with the switch mechanism turned on in the first embodiment of the mechanical timepiece of the present invention. (A part of the circuit board is cut away to show a part of the circuit board.)

FIG. 6 is an enlarged partial cross-sectional view showing a schematic shape of a balance with the switch mechanism turned on in the first embodiment of the mechanical timepiece of the present invention.

FIG. 7 is a perspective view showing a schematic shape of a balance magnet used in the mechanical timepiece of the present invention.

FIG. 8 is a graph schematically showing the relationship between the elapsed time of unwinding from a full turn and a mainspring torque in a mechanical timepiece.

FIG. 9 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. 10 is a graph schematically showing the relationship between the swing angle of the balance with hair and the instantaneous rate in a mechanical timepiece.

FIG. 11 is a block diagram showing an operation when the circuit is open and an operation when the circuit is closed in the mechanical timepiece of the present invention.

FIG. 12 is a graph schematically showing the relationship between the elapsed time taken from all windings and the instantaneous rate in the mechanical timepiece of the present invention and the conventional mechanical timepiece.

FIG. 13 is a plan view showing a schematic shape of a front side of a movement of a conventional mechanical timepiece (in FIG. 13, some parts are omitted, and a receiving member is indicated by an imaginary line). Fig. 14 is a schematic partial cross-sectional view of a movement of a conventional mechanical timepiece (in Fig. 14 some parts are omitted).

FIG. 15 is a plan view showing a switch adjusting device used in the mechanical timepiece of the present invention.

FIG. 16 is a sectional view showing a switch adjusting device used in the mechanical timepiece of the present invention.

FIG. 17 is a plan view showing a state where the switch position adjusting lever is rotated in the switch adjusting device used in the mechanical timepiece of the present invention.

FIG. 18 is a cross-sectional view showing a state where the switch position adjusting lever is rotated in the switch adjusting device used in the mechanical timepiece of the present invention. .

FIG. 19 is a plan view showing a state in which the switch interval adjusting lever is rotated in the switch adjusting device used in the mechanical timepiece of the present invention.

FIG. 20 is a cross-sectional view showing a state in which the switch for adjusting the switch interval is rotated in the switch adjusting device used in the mechanical timepiece of the present invention.

FIG. 21 is a front plan view showing a schematic shape of a coil unit in the first embodiment of the mechanical timepiece of the present invention.

FIG. 22 is a sectional view showing a schematic shape of the coil unit in the first embodiment of the mechanical timepiece of the present invention.

FIG. 23 is a rear plan view showing a schematic shape of a coil in the mechanical timepiece according to the first embodiment of the present invention.

FIG. 24 is a cross-sectional view showing a schematic shape of a coil in the mechanical timepiece according to the first embodiment of the present invention.

FIG. 25 is a front plan view showing a schematic shape of a modification of the coil unit in the first embodiment of the mechanical timepiece of the present invention.

FIG. 26 shows a mechanical timepiece according to a first embodiment of the present invention. FIG. 21 is a front plan view showing a schematic shape of another modified example.

FIG. 27 is a plan view showing a schematic shape on the front side of the movement in the second embodiment of the mechanical timepiece of the present invention (in FIG. 27, some parts are omitted, and the receiving member is a virtual member). Lines).

FIG. 28 is a schematic partial cross-sectional view of a movement in a mechanical timepiece according to a second embodiment of the present invention (in FIG. 28, some parts are omitted).

FIG. 29 is an enlarged partial plan view showing the schematic shape of the balance with the switch mechanism in the off state in the second embodiment of the mechanical timepiece of the present invention. (A part of the circuit board is cut away to show a part of) o

FIG. 30 is an enlarged partial cross-sectional view showing the schematic shape of the balance with hairspring in a state where the switch mechanism is off in the second embodiment of the mechanical timepiece of the present invention. FIG. 31 is an enlarged partial plan view showing the schematic shape of the balance with the switch mechanism turned on in the second embodiment of the mechanical timepiece of the present invention. (A part of the circuit board is cut away to show a part of the circuit board.)

FIG. 32 is an enlarged partial cross-sectional view showing the schematic shape of the balance with hair in a state in which the switch mechanism is turned on in the second embodiment of the mechanical timepiece of the present invention. FIG. 33 is a front plan view showing a schematic shape of a circuit board used in the first embodiment of the mechanical timepiece of the present invention.

FIG. 34 is a plan view showing a schematic shape on the front side of a movement in a modification of the mechanical timepiece of the first embodiment of the present invention (in FIG. 34, some parts are omitted). The receiving member is indicated by a virtual line).

FIG. 35 is a schematic partial cross-sectional view of a movement in a modification of the first embodiment of the mechanical timepiece of the present invention (in FIG. 35, some parts are omitted). . FIG. 36 is a sectional view showing a schematic shape of a conventional motor.

FIG. 37 is a front plan view showing a schematic shape of a circuit board used in a modification of the first embodiment of the mechanical timepiece of the present invention.

[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) First embodiment of the mechanical timepiece of the present invention

(1-1) Configuration of Movement of Mechanical Watch of the Present Invention

Referring to FIG. 1 and FIG. 2, in an embodiment of the mechanical timepiece of the present invention, a movement (machine body) 700 of the mechanical timepiece has a main plate 102 constituting a substrate of the movement. The winding stem 110 is rotatably incorporated in the winding guide hole 102 a of the main plate 102. Dial 104 (shown in phantom in FIG. 2) is attached to movement 700.

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 thumbwheel has the same rotation axis as the rotation axis of the winding stem 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 tooth is located at the end of the wheel closer to the outside of the movement.

The movement 700 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 direction of the rotation axis is determined based on the rotation of the butt. The rotation axis direction of the thumbwheel based on the rotation of the bolt Position. 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 a state where the winding stem 110 is located at the first winding position (0th stage) closest to the inside of the movement along the rotation axis direction, The wheel 1 1 2 is configured to rotate via the rotation of the wheel. The round wheel 1 1 4 is configured to rotate by the rotation of the wheel 1 1 2. The square wheel 1 16 is configured to rotate by the rotation of the round hole wheel 114.

The movement 700 uses a mainspring 122 housed in a barrel box 120 as a power source. The mainspring 1 2 2 is made of an elastic material having a spring property such as iron. It is configured 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. Escape wheel

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.

Movement 700 is provided with an escape / governing device for controlling the rotation of the front train wheel. The escapement and governor operate the balance wheel 140, which rotates clockwise and counterclockwise at regular intervals, the escape wheel 1330, which rotates based on the rotation of the front train wheel, and the balance wheel 140, And an ankle 142 for controlling the rotation of the escape wheel 130 based on the

The balance 140 includes a balance 140 a, a balance wheel 140 O b, and a hairspring 144 c. The hairspring 140 c is made of a resilient material having a spring property such as “Erinvar”. That is, the hairspring 140c is made of a metal conductive material. Based on the rotation of the second wheel & pinion i 24, the cylindrical pinion 150 rotates simultaneously. The minute hand 152 attached to the cylindrical 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. Based on the rotation of the reverse wheel, the hour wheel 1 54 rotates. 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. That is, the upper tenon 140a1 of the balance 140a is supported rotatably with respect to the balance upper bearing 166a fixed to the balance holder 166. 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 140c is a thin leaf spring having a spiral shape with a plurality of windings. 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 pad.

It is fixed with screws via a beard holder 170a attached to a beard holder 170 that is rotatably fixed to 166. The balance 1 16 6 is made of a conductive material such as brass. You. Beard support 170 is made of a conductive material such as iron or the like.

(1 2) Configuration of switch mechanism

Next, the switch mechanism of the mechanical timepiece according to the present invention will be described.

Referring to FIGS. 1 and 2, the switch lever 168 is rotatably mounted on the balance with hairspring 166. The first contact member 168a and the second contact member 168b are attached to the switch lever 168. The switch lever 168 is attached to the balance with hairspring 166, and is rotatably mounted about the center of rotation of the balance with hairspring 140. The switch lever 168 is formed of a plastic insulating material such as polycarbonate. The first contact member 168a and the second contact member 168b are made of a metal conductive material such as brass. A portion near the outer end of the hairspring 140c is located between the first contact member 168a and the second contact member 168b.

Referring to FIGS. 1 to 4, a circuit unit 710 is attached to the front surface of the main plate 102. The circuit unit 710 includes a circuit board 712 and a coil unit 714. The coil unit 714 includes a coil receiver 716 and four coils 180, 180a, 180b, 180c. The coil unit 714 is attached to the front surface of the main plate 102 with the coils 180, 180a, 180b, and 180c arranged so as to face the surface of the balance wheel 140b on the side of the main plate.

The number of coils is, for example, four as shown in FIGS. 1 to 4, but may be one, two, three, or There may be four or more.

The circuit board 712 is mounted on the coil support 716 by the circuit board fixing screw 718.

14 Fixed to the side facing Ob. The circuit unit 710 is attached to the front surface of the main plate 102 by a circuit unit fixing screw 720. That is, as shown in FIGS. 1 to 4, the four coils 180, 180a, 180b, 180c are The coil unit 714 is placed on the front surface of the main plate 102 with the circuit board 712 facing the surface of the balance wheel 14 Ob facing the base plate 102 while being disposed on the balance wheel 14 Ob side of the circuit board 612. Mounted.

Referring to FIG. 21 and FIG. 22, the coils 180, 180a, 180b, and 180c each have one end 18 Ohm inserted into the opening 716d, 716a, 716b, and 716c of the coil receiver 716. Are arranged in the coil receiver 616.

Four sets of guide bins 716p1 and 716p2 are provided on the coil receiver 716. One set of guide pins 716p1, 716p2 guides coil 180, another set of guide pins 716pl, 716p2 guides coil 180a, and another set of guide pins 716p K 716p2 Guides the coil 180b, and another set of guide pins 716p 716p2 guides the coil 180c.

Referring to FIGS. 23 and 24, each coil 180, 180a, 180b, 180c has a coil true 180 g, a coil substrate 18 Ok, and 180 m. 180g of the coil is made of a non-magnetic material such as plastic or brass. The coil true 180 g has a flange 18 ° f at one end, and the tip 180 h at the other end penetrates the coil substrate 180 k and is fixed to the front side of the coil substrate 180 k by caulking or the like.

The winding portion 180m is provided on the outer periphery of the shaft portion 180j of the coil shaft 180g. The two terminals 180 e of the winding part 180 m are fixed to the front side pattern 180 s arranged on the winding side of the coil board 180 k. The terminal 180e of the winding portion 180m is preferably fixed by welding, soldering, bonding using a conductive adhesive, or the like.

Referring to FIG. 33, the circuit board 712 has, on the back side thereof, a front side pattern 180 t of the coil board 180 k conducting to one terminal of the coil 180 and a coil board 180 k conducting to one terminal of the coil 180 a. The first coil conduction pattern 712a provided to conduct the front side pattern 180t in series with the coil It was provided to conduct in series the front side pattern 180 t of the coil board 18 Ok conducted to the other terminal of the coil 180 b and the front side pattern 180 t of the coil board 180 k conducted to the one end of the coil 180 b. The second coil conduction pattern 712b, the front side pattern 180t of the coil board 18 Ok conducted to the other terminal of the coil 180b, and the front side pattern 180t of the coil board 180k conducted to one terminal of the coil 180c. And a third coil conduction pattern 712c provided to conduct the current in series.

Therefore, in the configuration shown in FIGS. 1 to 4, the coils 180, 180a, 180b, and 180c are conducted in series by the three coil conduction patterns 712a, 712b, and 712c provided on the circuit board 712. .

The circuit board 712 further includes a first coil contact pattern 712d for contacting the front side pattern 180t of the coil board 180k that is electrically connected to the other end of the coil 180, and the other of the coil 180c on the other side. And a second coil contact pattern 712e for contacting the front side pattern 180t of the coil substrate 180k that is electrically connected to the terminal.

The circuit board 712 further has a first lead connection pattern 712f and a second lead connection pattern 712g on its front side. The first lead connection pattern 712f and the first coil contact pattern 712d are electrically connected by the first through hole 712h. The second lead connection pattern 712g and the second coil contact pattern 712e are provided with a lead connection pattern provided on the front side of the _c circuit board 712 which is conducted by the second through hole 712j, Conduction of the coil contact pattern provided on the back side of the circuit board 712 is preferably performed by a single-hole mechanism provided in the through hole.

When attaching the circuit unit 710 to the main plate 102, the semicircular portion 716w (see FIG. 21) of the coil receiver 716 is fixed to the main plate 102 by a balance spring bearing. It is preferable to move the circuit unit 7110 in parallel with the surface of the main plate 102 so as to be in contact with the outer peripheral portion of 102b. The balance lower bearing 102 b constitutes a bearing member provided on the main plate 102.

In this configuration, the circuit unit 7100 can be attached to the main plate 102 after the balance 140 is attached to the movement.

As a modified example, referring to FIG. 25, the coil unit 730 includes a coil receiver 732 and a coil 180. The outer periphery of the coil receiver 732 is circular.

Here, referring to FIGS. 34 and 35, in the movement 7900, the circuit board 792 is fixed to the respective coil holders 7 of the four coil units 7330 by the circuit board fixing screws 718. 3 2 Fixed to the surface facing the balance wheel 140 b. The circuit unit is attached to the front surface of the main plate 102 with the circuit unit fixing screw 720. That is, with the four coils 180 placed on the balance wheel 140 b side of the circuit board 792, respectively, the circuit board 792 is mounted on the base plate 102 of the balance wheel 140 b. The four coil units 7300 are mounted on the front side of the main plate 102, facing the facing side.

The circuit unit may be attached to the ground plate 102 by, for example, providing a coil guide (not shown) on the ground plate 102 so that a part of the coil unit 7300 contacts the coil guide. This can be implemented by disposing the unit on the main plate 102.

In such a configuration, the four coils 1802 are provided by three coil conduction patterns 792a, 792b, and 792c provided on the circuit board 792 (see FIG. 37). Are conducted in series.

As another modification, referring to FIG. 26, the coil unit 736 includes a coil receiver 738 and a coil 180. The outer periphery of the coil receiver 738 is square. The circuit board 792 is fixed to the four coil units by the circuit board fixing screws 718. _{C The} circuit unit fixed to the surface facing the balance wheel 140 b of the coil receiver 7 3 6 of the coil 7 3 6 is attached to the front surface of the main plate 10 2 by the circuit unit fixing screw 7 20. Mounted. That is, the circuit board 792 is mounted on the ground plate 1 02 of the balance wheel 140b with the four coilers 180 arranged respectively on the balance wheel 140b side of the circuit board 792. The four coil units 736 are mounted on the front side of the main plate 102, facing the facing side.

For mounting the circuit unit on the ground plate 102, for example, a coil guide (not shown) is provided on the ground plate 102, and the circuit unit is placed so that a part of the coil unit 736 contacts the coil guide. It can be implemented by placing it on the main plate 102.

Even in such a configuration, the four coils 1802 are electrically connected in series by the three coil conduction patterns 792a, 792b, and 792c provided on the circuit board 792. .

In the configurations of the two modified examples shown here, since the same four coils 180 are used, when one coil 180 is damaged, only that coil can be replaced. The balance magnet 140 e is attached to the side of the main plate 140 b so as to face the front surface of the main plate 102.

In the movement 700 of the embodiment of the mechanical timepiece of the present invention, as shown in FIGS. 1 to 4, four coils 180, 180a, 180b, 180c c, respectively, in a state where it is arranged on the balance wheel 14 Ob side of the circuit board 61 2, that is, in a state where it is arranged on the balance magnet 140 e side of the circuit board 71 2, that is, The coil unit 714 is mounted on the front surface of the main plate 102 with the substrate 712 facing the surface of the balance wheel 140b facing the main plate 102.

As shown in Fig. 1, Fig. 3, and Fig. 5, when a plurality of coils are arranged, the circumferential distance between the coils is the S pole and N pole of the balance magnet 140e arranged opposite to the coil. Is preferably an integer multiple of the circumferential spacing of The intervals need not be the same. Furthermore, in such a configuration having a plurality of coils, it is preferable that the wiring between the coils be wired in series so that the currents generated in the coils due to the electromagnetic induction do not cancel each other. See Figures 1 to 4.

Alternatively, as a modified example, the wiring between the coils may be wired in parallel so that the currents generated in the coils by the electromagnetic induction are not canceled out each other. Omitted).

Referring to FIG. 7, the balance magnet 140 e has an annular shape (ring shape), and has, for example, twelve S poles 140 s 1 to 140 s 12 polarized vertically along its circumferential direction. And 12 N poles 14 On 1 to 14 On 12 are provided alternately. The number of magnet portions arranged in an annular shape (ring shape) in the balance magnet 140 e is 12 in the example shown in FIG. 7, but may be two 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 140e and the coils 180, 180a, 180b, 180c. The gap between the balance magnet 140 e and the coils 180, 180 a, 180 b, 180 c is that when the coils 180, 180 a, 180 b, 180 c are conducting, the magnetic force of the balance magnet 140 e is the coils 180, 180 a, 180 b , 180 c.

When the coils 180, 180a, 180b, 180c are not conducting, the magnetic force of the balance magnet 140e does not affect the coils 180, 180a, 180b, 180c. The balance magnet 140e contacts the balance wheel 140b on the main plate side with one surface in contact with the ring-shaped rim of the balance wheel 14 Ob and the other surface facing the front surface of the main plate 102. It is fixed by bonding or the like.

The first lead wire 182 is connected to one end of the coil 180, the first contact member 168a and And the second contact member 168b. The first lead wire 182 is connected to the first lead connection pattern of the circuit board 712 which is electrically connected to one terminal of the coil 180.

A second lead wire 184 is provided to electrically connect one end of the coil 18 ° c to the beard holder 170. The second lead wire 184 is connected to the second lead connection pattern of the circuit board 712 which is electrically connected to one terminal of the coil 180c. In FIG. 4, the thickness of the hairspring 140c (the thickness in the radial direction of the balance with hairspring) is exaggerated, but is, for example, 0.021 mm. Balance magnet 140 e, for example, an outer diameter of about 9 millimeters, an inner diameter of about 7 millimeters, a is about 1 millimeter thick, the magnetic flux density, _c the coil 180, 180a is about 0.02 Tesla , 180b, 180c each have, for example, eight turns, and the coil wire diameter is about 25 micrometers. The gap STC between the balance magnet 140e and the coils 180, 180a, 180b, 180c is, for example, about 0.4 mm.

(1.3) Balance operation when circuit is open

With reference to FIGS. 3, 4, and 11, the operation of the balance with hairspring 140 when the coils 180, 180a, 180b, and 180c are not conducting, that is, when the circuit is open, will be described.

The hairspring 140 c expands and contracts in the radial direction of the hairspring 140 c in accordance with the rotation angle of the balance 140. For example, in the state shown in Fig. 3, when the balance with hairspring 140 rotates clockwise, the hairspring 140c contracts toward the center of the balance with hairspring 140, whereas the balance with hairspring 140 rotates counterclockwise. Then, the hairspring 140 c expands away from the center of the balance 140. Therefore, in FIG. 4, when the balance with hairspring 140 rotates clockwise, the hairspring 140c operates so as to approach the second contact member 168b. On the other hand, when the balance with hairspring 140 rotates in the counterclockwise direction, the hairspring 140c operates so as to approach the first contact member 168a.

When the rotation angle (swing angle) of the balance with hairspring 140 is less than a certain threshold value, for example, less than 180 degrees, the hairspring 140 c has a small diameter because the amount of expansion and contraction in the radial direction of the hairspring 140 c is small. Does not contact the first contact member 168a, nor does it contact the second contact member 168b.

When the rotation angle (swing angle) of the balance with hairspring 140 is a certain threshold value, for example, 180 degrees or more, the amount of expansion and contraction of the hairspring 140 c in the radial direction is sufficiently large. Contacts both the first contact member 168a and the second contact member 168b.

For example, a portion 140ct near the outer end of the hairspring 140c is located in a gap of about 0.04 mm between the first contact member 168a and the second contact member 168b. Therefore, when the swing angle of the balance with hairspring 140 is within the range of more than 0 degree and less than 180 degrees, the portion 140 ct near the outer end of the hairspring 140 c does not contact the first contact member 168 a. Also, it does not contact the second contact member 168b. That is, since the outer end of the hairspring 140c does not contact the first contact member 168a and does not contact the second contact member 168b, the coils 180, 180a, 180b, and 180c do not conduct, and the balance The magnetic flux of the magnet 140e does not affect the coils 180, 180a, 180b, 180c. As a result, the swing angle of the balance with hairspring 140 is not attenuated by the action of the balance with hairspring 140e and the coils 180, 180a, 180b, and 180c.

Two (1 · 4) Balance operation when the circuit is closed

Next, an operation of the balance with hairspring 140 when the coils 180, 180a, 180b, 180c are conducting, that is, when the circuit is closed, will be described with reference to FIGS. That is, FIGS. 5 and 6 show a case where the swing angle of the balance with hairspring 140 is 180 degrees or more.

In FIG. 6, the thickness of the hairspring 140c (the thickness in the radial direction of the balance with hairspring) is exaggerated.

When the swing angle of the balance with hairspring 140 becomes 180 degrees or more, the portion 140 ct of the hairspring 140c near the outer end portion comes into contact with the first contact member 168a or the second contact member 168b. In such a state, the coils 180, 180a, 180b, and 180c conduct, and the induction current generated by the change in the magnetic flux of the balance magnet 140e exerts a force that suppresses the rotational movement of the balance 140. Affects 140. Then, by this action, the balance angle of the balance with hairspring 140 is reduced by applying a balance with a balance with balance 140 to suppress the rotation of the balance with balance 140.

Then, when the swing angle of the balance with hairspring 140 decreases from 0 degree to less than 180 degrees, the portion 140 ct near the outer end of the hairspring 140 c does not contact the first contact member 168 a, The second contact member 168 b does not come into contact. Therefore, as shown in FIGS. 3 and 4, since the outer end of the hairspring 140c does not contact the first contact member 168a and does not contact the second contact member 168b, the coils 180, 180a, 180b , 180 c do not conduct, and the magnetic flux of the balance magnet 140 e does not affect the coils 180, 180 a _s 180 b _s 180 c.

(1-5) Effect of balance rotation angle control mechanism

In the mechanical timepiece of the present invention configured as described above, the rotation angle of the balance with hairspring 140 can be efficiently controlled. 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 the front train wheel, and a movement based on the operation of the balance with hairspring. In a mechanical timepiece configured to include an ankle for controlling the rotation of the wheel, a configuration having a balance rotation angle control mechanism is employed, so that the mechanical timepiece can be operated without reducing the duration of the mechanical timepiece. Accuracy can be improved.

That is, in the present invention, by focusing on the correlation between the instantaneous rate and the swing angle, by keeping the swing angle constant, the change in the instantaneous rate is suppressed, and the advancement and delay of the clock per 1 are reduced. It was adjusted to do so.

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.

(2) Second embodiment of the mechanical timepiece of the present invention

(2.1) Configuration of the mechanical timepiece according to the second embodiment of the present invention

Next, a mechanical timepiece according to a second embodiment of the present invention will be described. In the following description, the mechanical watch according to the second embodiment of the present invention will be described mainly focusing on the differences from the mechanical watch according to the first embodiment of the present invention. Therefore, the contents which are not described below can be well understood by referring to the description of the above-described first embodiment of the mechanical timepiece of the present invention.

Referring to FIG. 27 to FIG. 30, the circuit unit 760 is attached to the front surface of the main plate 102. The circuit unit 760 is composed of a circuit board 7 1 2 and a coil unit 7 6

And 4 inclusive. The coil unit 7 6 4 has a coil receiver 7 6 6 and four coils 1 8 0,

180 a, 180 b, and 180 c. Koinore 180, 180a, 180b,

Coiled so that 180 c faces the side with the main plate of balance wheel 140 b. The knit 764 is attached to the front side of the main plate 102.

The circuit board 712 is fixed to the surface of the coil receiver 766 facing the balance wheel 140b by the circuit board fixing screw 718. The circuit unit 760 is attached to the front surface of the main plate 102 by a circuit unit fixing screw 720. That is, as shown in FIGS. 1 to 4, in a state where the four coils 180, 180 a, 180 b _s 180 c are respectively arranged on the balance wheel 14 Ob side of the circuit board 612, The coil unit 764 is attached to the front surface of the main plate 102 so as to face the surface of the balance wheel 14013 facing the main plate 102.

Circuit board 612 has three coil conduction patterns (not shown) provided for conducting coils 180, 180a, 180b, and 180c in series. When attaching the circuit unit 760 to the main plate 102, the circuit unit 760 is fixed so that the inner arc 766w of the coil receiver 766 (see FIG. 30) is fitted to the outer periphery of the balance lower bearing 102b fixed to the main plate 102. It is better to place it on the surface of 102. In this configuration, the circuit unit 760 is attached to the main plate 102 before attaching the balance with the balance 140.

(2 .2) Operation of the balance with the circuit open

As shown in FIGS. 29 and 30, the operation of the balance with the circuit open in the second embodiment of the mechanical timepiece of the present invention is described with reference to FIGS. 3, 4, and 11. This is the same as described above. Therefore, a detailed description on this is omitted.

(2-3) Balance operation when the circuit is closed

As shown in FIGS. 31 and 32, the operation of the balance with a closed circuit in the second embodiment of the mechanical timepiece of the present invention is described with reference to FIGS. 5, 6, and 11. Theory This is the same as described above. Therefore, a detailed description on this is omitted.

(3) Results of 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.

Referring to FIG. 12, in the mechanical timepiece of the present invention, the instantaneous rate of the timepiece is first adjusted to an advanced state as indicated by the X-marked plot and the thin line in FIG. 12. In the mechanical timepiece of the present invention, when the balance with hairspring 140 rotates by a certain angle or more, the outer end of the hairspring 140c is connected to the first contact member 1668a or the second contact member 1668b. When the contact is made, the effective length of the hairspring 140 c becomes shorter, so that the instantaneous rate further increases. C In other words, in the mechanical timepiece of the present invention, the outer end of the hairspring 140 c is the first end. In the state where it does not come into contact with the contact member 168a and does not come into contact with the second contact member 168b, as shown in Fig. 12 with the X-marked plot and the thin line, the rate with the mainspring fully wound up Is about 18 seconds Z days (advance about 18 seconds per day), and after 20 hours from full winding, the instantaneous rate is about 13 seconds Z days (approximately 13 seconds per day, advance ) After 30 hours from the full winding state, the instantaneous rate is about -2 seconds / day (about 2 seconds behind each day).

Then, in this mechanical timepiece of the present invention, assuming that the balance rotation angle control mechanism is not operated, as shown in FIG. 12 by a triangular plot and a thick line, the outer end of the hairspring 140 c Is in contact with the first contact member 1668a or the second contact member 1668b, the rate is about 25 seconds / day with the mainspring fully wound (about 25 seconds per day). Advance), the instantaneous rate is about 20 seconds / day after 20 hours from the full winding state (about 20 seconds per day), and the instantaneous rate is about 5 after 30 hours from the full winding state. Seconds / day (advance about 5 seconds per day). On the other hand, in the mechanical timepiece of the present invention, when the balance rotation angle control mechanism is operated, as shown by the black circle plot and the thick line in FIG. 12, the balance rotation angle control mechanism operates, In other words, the instantaneous rate can be maintained at about 5 seconds / day from the state where the mainspring is completely wound up until 27 hours have elapsed (maintain the state advanced by about 5 seconds per 1). After 30 hours from the winding state, the instantaneous rate is about 12 seconds / day (about 2 seconds behind each day).

The mechanical timepiece having the balance 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, so that a square plot and a virtual line are shown in FIG. 12. Compared with the conventional mechanical timepiece shown, the instantaneous rate is about 0 to 5 seconds.

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

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

(4) Switch adjustment device used in mechanical timepiece of the present invention

Next, in the mechanical timepiece of the present invention, the position of the first contact member and the second contact member with respect to the portion 140 near the outer end of the hairspring, and the position between the first contact member and the second contact member. A switch adjusting device used for adjusting the interval will be described. Referring to FIGS. 15 and 16, a switch adjusting device 200 used in the mechanical timepiece of the present invention includes a switch body 202 and a first guide provided on the switch body 2◦2. Dobin 204 and the second guide bin 206. The switch body 202 is formed of a metal such as iron or brass or a plastic. First guide bin 204 and second guide bin The guide bin 206 is formed of a metal such as iron or brass or a plastic. The first guide bin 204 and the second guide bin 206 may be formed as separate members from the switch body 202 and fixed to the switch body 202, The dobin 204 and the second guide bin 206 may be formed integrally with the switch body 202. The switch body 202 is attached to a balance holder (not shown) so as to be rotatable about the rotation center of the balance 140.

The switch insulating member 210 is disposed on the opposite side of the switch body 202 from the side facing the balance with hairspring 140. The switch insulating member 210 is formed of an insulating material such as plastic, and is formed of a material that can be elastically deformed. The first elongated hole 210a is provided in the switch insulating member 21 °, and the first guide pin 204 and the second guide bin 206 are fitted in the first elongated hole 210a. The insulating member 210 is slidably disposed with respect to the switch body 202. The sliding direction of the switch insulating member 210 coincides with a straight line passing through the center of the first guide bin 204 or the second guide bin 206 and the center of the balance with hairspring 140.

A switch interval adjusting lever 2 12 is provided rotatably with respect to the switch insulating member 2 10 by a slip mechanism. An outer peripheral portion is incorporated in a cylindrical portion of the switch interval adjusting lever 212 in a circular portion provided in a part of the first elongated hole 210a of the switch insulating member 210. The circular portion provided in a part of the first long hole 210a of the switch insulating member 210 is configured so as to fit into the cylindrical portion of the switch interval adjusting lever 211 through elastic force. The rotation of the switch interval adjusting lever 2 12 can be fixed at any position.

The first contact part 2 12 a and the second contact part 2 12 b are provided on the side of the switch interval adjusting lever 2 12 facing the balance 140. 1st contact 2 1 2a and 2nd contact

2 12 b is provided at a position eccentric with respect to the rotation center of the switch interval adjusting lever 2 12. Switch interval adjustment between the first contact point 2 1 2a and the second contact point 2 1 2b The lever is formed so as to be symmetric with respect to a straight line including the rotation center of the lever 2. The portion 140 ct near the outer end of the hairspring 140 c is located in the gap SSW between the first contact portion 2 12 a and the second contact portion 2 12 b. For example, the gap SSW is about 0.06 millimeter.

By rotating the switch interval adjusting lever 2 12 in the direction of arrow 220 (clockwise in FIG. 15) or in the direction of arrow 222 (counterclockwise in FIG. 15), The first contact part 2 12 a and the second contact part 2 12 b can be rotated. As a result, the distance S SW between the first contact point 2 12a and the second contact point 2 12b in the direction of a straight line passing through the center of the balance 140 can be changed.

Further, a switch position adjusting lever 23 is provided rotatably with respect to the switch body 202 by a slip mechanism, and can be fixed at an arbitrary position. The eccentric portion 2 32 a of the switch position adjusting lever 2 32 fits into the second slot 21 Ob of the switch insulating member 210. The direction of the central axis in the longitudinal direction of the second oblong hole 21 Ob is in the direction of a straight line passing through the center of the first guide bin 204 or the center of the second guide pin 206 and the center of the balance with hairspring 140. At right angles to this. That is, the direction of the central axis in the longitudinal direction of the second elongated hole 21 Ob is perpendicular to the direction of the central axis in the longitudinal direction of the first elongated hole 210a. The elastically deformed portions 210c and 210d of the switch insulating member 210 having a width formed so as to be elastically deformable are provided at both longitudinal ends of the second elongated hole 210b. The rigid body part 210 e of the switch insulating member 210 whose width is formed so as not to be elastically deformed is outside the second elongated hole 210 b (the side farther from the outer end of the hairspring 144 c) ) Provided. Therefore, the width of the rigid body portion 210e is formed to be larger than the width of the elastic deformation portions 210c and 210d. The inner side of the rigid portion 210 e is arranged so as to contact the eccentric portion 233 a of the switch position adjusting lever 232.

By rotating the switch position adjusting lever 232 in the direction of the arrow 240 (clockwise in FIG. 15), the eccentric portion 232a can be rotated. This As a result, the switch insulating member 21 1 ◦ moves in the direction of a straight line passing through the center of the balance with hairspring 140 toward the center of the balance with hairspring 140 (the direction of the arrow 2 42 in FIGS. 15 and 16). ) Can be moved to. As a result, the first contact portion 2 1 2a approaches the portion 140 ct close to the outer end of the hairspring 140 c, and the second contact portion 2 1 2 b approaches the hairspring 140 c Move away from 140 ct near the outer edge of the

By rotating the switch position adjusting lever 2 32 in the direction of the arrow 2 44 (counterclockwise in FIG. 15), the eccentric portion 2 32 a can be rotated. As a result, the switch insulating member 210 moves away from the center of the balance 140 in the direction of a straight line passing through the center of the balance 140 (the direction of the arrow 246 in FIGS. 15 and 16). Can be moved to. As a result, the first contact portion 2 1 2a moves away from the portion 140 ct near the outer end of the hairspring 144c, and the second contact portion 2 1 2b moves away from the hairspring 140c. Move closer to the outer end 140 ct.

FIGS. 17 and 18 show the state when the switch position adjusting lever 2 32 in FIGS. 15 and 16 is rotated in the direction of arrow 240 (clockwise in FIG. 15). Have been. By the rotation of the switch position adjusting lever 2 32, the eccentric portion 2 32 a rotates, and the switch insulating member 210 moves toward the center of the balance with hairspring 140, and the first contact portion 2 1 2 a is closer to the outer end of the hairspring 140 c, 14 Oct, and the second contact point 2 1 2 b is the portion of the hairspring, closer to the outer end of the hairspring 140 c. Keep away from In the operation of rotating the switch position adjusting lever 2332, the gap S SW between the first contact portion 212a and the second contact portion 212b does not change.

FIGS. 19 and 20 show the switch interval adjusting levers in FIGS. 15 and 16.

When 2 1 2 is rotated in the direction of arrow 2 2 2 (counterclockwise in Fig. 15) Is shown in the figure. The first contact point 2 12 a and the second contact point 2 12 b rotate by the rotation of the switch interval adjusting lever 2 1 2, and the first contact point 2 in the direction of a straight line passing through the center of the balance 140. The distance between 1 2a and the second contact portion 2 1 2b decreases. Therefore, the distance between the first contact point 2 12a and the second contact point 2 12b in the direction of a straight line passing through the center of the balance 140 changes to SSW2 which is smaller than SSW.

As described above, in the mechanical timepiece of the present invention, by using the switch adjusting device 200, the first contact portion 2 12a and the second contact portion with respect to the portion 140 ct near the outer end of the hairspring can be obtained. 2 The position of the contact part 2 1 2 b can be adjusted.The distance between the first contact part 2 12 a and the second contact part 2 1 2 b can be adjusted to adjust the outer end of the hairspring. The distance between the part 140 ct close to the first contact part 2 1 2a and the part close to the outer end of the hairspring 1 140 ct and the second contact part 2 1 2b Can be adjusted.

By applying the two adjustment mechanisms described above to the switch adjustment device, the swing angle at which the switch is turned ON / OFF can be easily adjusted. Therefore, in the mechanical timepiece of the present invention shown in FIGS. 1 and 2, when the switch adjusting device 200 is used, the first contact member 216a is arranged instead of the first contact member 168a. Instead of the second contact member 1668b, the second contact portion 211b may be arranged.

The switch adjusting device for a mechanical timepiece of the present invention can also be applied to a conventional mechanical time adjusting device for a mechanical timepiece. In such a case, the first contact portion 212a corresponds to the slow / fast needle, and the second contact portion 212b corresponds to the whisker.

With such a configuration, it is possible to accurately and efficiently adjust the slow / fast hand and whiskers of a 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, since the mechanical timepiece of the present invention is provided with a balance rotation angle control mechanism including a newly developed coil, a high-precision mechanical timepiece can be manufactured more efficiently than in the past.

Claims

The scope of the claims

1. The main plate that constitutes the substrate of the mechanical watch, the mainspring that constitutes the power source of the mechanical watch, the front train wheel that rotates by the rotational force when the mainspring is unwound, and the rotation of the front train wheel is controlled. The escapement and speed governor are equipped with a balance wheel that alternately rotates clockwise and counterclockwise, an escape wheel that rotates based on the rotation of the front train wheel, and a balance wheel. A mechanical timepiece configured to include an pallet for controlling rotation of the escape wheel based on the operation of

Outputs an ON signal when the rotation angle of the balance with hairspring (140) exceeds a predetermined threshold, and outputs an OFF signal when the rotation angle of the balance with hairspring (140) does not exceed the predetermined threshold. A switch mechanism (168, 168a, 168b) configured to

When the switch mechanism (168, 168a, 168b) outputs an ON signal, a balance rotation angle configured to apply a force to the balance (140) to suppress the rotation of the balance (140). A control mechanism (140e, 180), wherein the switch mechanism (168, 168a, 168b) comprises a hairspring (140c) provided on the balance with hairspring (140). It is configured to output an ON signal when it comes into contact with the contact members (168a, 168b),

The balance with hairspring rotation angle control mechanism (140e, 180) is arranged so as to be able to exert a magnetic force on the balance with hairspring (140e) provided on the balance with hairspring (140). Multiple coils (180, 180a, 180b, 180c)

The coil (180, 180a, 180b, 180c) is provided with the switch mechanism When the (168, 168a, 168b) outputs an ON signal, a magnetic force is applied to the balance magnet (140e) to suppress the rotation of the balance (140), and the switch mechanism

(168, 168a, 168b) is configured not to apply a magnetic force to the balance magnet (140e) when outputting an off signal,

Further, a circuit board (712) having a pattern for conducting the plurality of coils (180, 180a, 180b, 180c) is provided.

The winding portions of the plurality of coils (180, 180a, 180b, 180c) are configured to be disposed on the balance magnet (140e) side of the circuit board (712).

A mechanical watch characterized by the following.

2. The mechanical timepiece according to claim 1, wherein the plurality of coils (180, 180a, 180b, 180c) are mounted on a coil receiver (716).

3. The circuit board (712) is attached to the coil receiver (716), and the coil receiver (716) is guided by a bearing member (102b) provided on the base plate (102). The mechanical timepiece according to claim 1 or claim 2.

4. The plurality of coils (180, 180a, 180b, 180c) are attached to separately provided coil receivers (732, 736), and the coil receivers

The mechanical timepiece according to claim 1 or claim 2, wherein (732, 736) is attached to the circuit board (712), respectively.

5. The circuit board (712) has on one side a pattern for conducting the plurality of coils (180, 180a, 180b, 180c), and on the other side, the switch mechanism ( The mechanical timepiece according to any one of claims 2 to 4, further comprising a pattern for connecting a lead wire for conducting with 168, 168a, 168b).

6. The plurality of coils (180, 180a, 180b, 180c) The mechanical timepiece according to any one of claims 2 to 5, wherein the mechanical timepiece is connected in series by a pattern provided on a substrate (712).

7. The switch mechanism (168, 168a, 168b) includes a first contact member (1

68a) and a second contact member (168b), and further comprising an adjusting device (200) for changing a distance between the first contact member (168a) and the second contact member (168b). The mechanical timepiece according to any one of claims 1 to 6, characterized in that:

8. The switch mechanism (168, 168a, 168b) includes a first contact member (168a) and a second contact member (168b), the first contact member (168a) and the second contact member. 7. The mechanical device according to claim 1, further comprising an adjusting device (200) for simultaneously moving the (168b) with respect to the rotation center of the balance with hairspring (140). clock.