JP2564964Y2 - Pointer-type multi-time display clock - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a correction structure for a timepiece capable of displaying multiple times by hands.

[0002]

2. Description of the Related Art Conventionally, there has been a multi-time display clock capable of displaying other times in addition to a normal time, such as a world clock display which is found on a part of a digital clock. As is well known, the display is switched by a push button operation or the like to display a time other than the home time. Similarly, in a hand-held timepiece, a watch capable of displaying multiple times recently has come to be seen. In other words, it has several display parts, and in addition to displaying the local local time as the home time, directly displays the time in another area as the local time, or a clock with a time difference display function. There is a method of displaying the time in another area by switching and displaying the time using a push button operation or the like.

[0003] The structure of the movement of the pointer-type timepiece, in which the multiple times are displayed on the multiple display section as described above, uses a plurality of small complete movements for women, which are usually used in bracelet watches and the like. It is stored in a predetermined position of a concave portion provided in a synthetic resin middle frame and fixed to a watch case, and a dial or a pointer is attached to each movement to display multiple times with multiple hands. Since the multi-time display hand clock having such a structure has the same number of time display units as the plurality of clock movements, the user can freely set the home time display and the local time display among the plurality of time display units. Can be selected and used.

In order to correct the time of such a timepiece, a crown as an external operation member is provided on an extension line connecting the center of the timepiece and the center of each time display part. A plurality of times can be set by pulling out the crown that matches with.
In the case of a multi-timepiece having a plurality of crowns, when the crown comes directly above or below and overlaps the band, a watch with a special design in which the crown is arranged near the band stopper has also appeared.

[0005] Another example of the structure of a movement of a pointer-type timepiece with a multi-time, multi-hand display is Japanese Utility Model Laid-Open No. 1-129684.
There are also those described in Japanese Unexamined Patent Publication No. According to this publication,
A wheel train is formed in four directions from an hour wheel and a plurality of display wheels are arranged on concentric circles to display multiple times with multiple hands.

[0006] Further, as a timepiece having a time difference display function added to an ordinary hand-displaying three-hand timepiece or the like, see Japanese Patent Application Laid-Open No. 55-30 / 1979.
There is a planetary wheel system proposed in the embodiment of Japanese Patent Publication No. 676, which is composed of a sun wheel with position-restricted 11 teeth, a planetary wheel, and an hour wheel with 12 teeth for fixing the hour hand. And
The planetary car rotates around the sun wheel with the rotation of the second wheel, which makes one revolution in 60 minutes, and rotates the hour wheel at a reduction ratio of 1/12.

[0007]

[Problems to be Solved by the Invention] However, in the former multi-clock with hands display, since a plurality of small movements are mounted in the recessed storage portion of the middle frame, it is difficult to position the movements between the movements. Interference or displacement with the relief hole of the hour wheel fixing hour wheel for fixing the hour hand tends to cause chopping (temporary stopping) or poor appearance. In addition, since the multiple time display is composed of a plurality of small movements, the number of assembling steps is large, and the number of parts is large, so that the clock movement is considerably high in cost, resulting in an expensive wristwatch, The size of the watch is much larger than others. Furthermore, the hand setting of the multi-time display unit requires that each of the plurality of display units be individually corrected. For example, when the time display unit is directly above or below the clock, it is difficult to perform the crown operation. However, it is very difficult for the user to perform the needle adjusting operation, and the plurality of display units are driven independently of each other, which may cause a reading error due to a wrong operation of the crown by the user.

In the hand-held multi-timepiece shown in FIG. 1 of Japanese Utility Model Laid-Open Publication No. 1-120684, a train of wheels must be formed in multiple directions from an hour wheel. In contrast to the above, the directions of rotation of the hands and the display hands are the same, but since one intermediate wheel (referred to as a planetary car in this publication) is arranged in a pair on one display wheel, wheel train processing and timepiece movement It takes a lot of man-hours to assemble, etc., which is a factor of cost increase. On the other hand, in the other embodiment shown in FIG. 4, for example, when an attempt is made to make a hands display type multi-time clock, the hand movement direction of the local time display hand is opposite to the rotation direction of the home time hands. Therefore, there is a danger that a minute reading difference may occur with respect to the hour character, which is not practical.

Further, JP-A-55-30676 mentioned last.
In the time difference correction clock proposed in the official gazette, when the local time of another area is viewed, the time for the normal time display of the home time is corrected, so the hour hand moves and the time of the home time switches. It has the disadvantage that local time is difficult to understand.

An object of the present invention is to reduce the cost of a timepiece movement and to provide a low-cost multi-time display timepiece that is easy for a user to use and that is easy to operate.

[0011]

In order to achieve the above object, the present invention has the following configuration. In other words, the
The first pointer display section for displaying one time and the second time are displayed
A watch that has a second pointer display and can independently correct both displays
, The correction mechanism of one display unit is a dual car,
A dual second car, and the data provided on the dual second car.
Planetary gear meshing with a dual-purpose car, and a dug meshing with the planetary car
Al-cylinder cars, jumping springs for regulating the dual cars,
A correction member driven by a section operating member,
The dual hour wheel is decelerated by the rotation of the dual 2nd wheel.
Roll, and by one pitch rotation of the dual car
Is configured to rotate by an integral number, and the dual
The hour wheel is pitched one pitch only in the counterclockwise direction by the correction member.
One characterized by being configured to rotate.

[0012]

The sun wheel can be corrected by one pitch only in the counterclockwise direction by the dual correction member.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an external view of a timepiece according to an embodiment of the present invention, FIG.
Is a plan view of the left half seen from the back cover side of the clock movement,
3 is a plan view of the right half as viewed from the back cover side of the watch movement, FIG. 4 is a plan view of a left half as viewed from the hands side of the watch movement, and FIG. 5 is a right half as viewed from the hands side of the watch movement. FIGS. 6, 7 and 8 are cross-sectional views of essential parts showing the wheel train mechanism of the timepiece shown in FIG. 1 to 8, the same numbers indicate the same components.

[0014] In FIG. 1, 1 hour hand rotates once 12 hours a substantially central portion as a rotational center of the watch, 2 the minute hand to one revolution in 60 minutes by the hour hand 1 and coaxial, 3 again in the hour 1 coaxial It is a second hand that makes one revolution in 60 seconds, and these hands form a first hand display that indicates the local normal time. 4 the first difference time display unit to Table Wa the first difference time, the 5 second
The second time difference time display unit to Table Wa the time difference time, 6 is the third time difference time display unit to Table Wa third difference time, the difference time display unit 4, 5 and 6 substantially central portion of the watch shows the second pointer display unit that will be located toward the three sides at a distance of approximately equally from
You . The time difference display sections 4, 5, and 6 are composed of a local time hour hand (hereinafter abbreviated as an LT hour hand) 4a, 5a, 6a that makes one rotation in 12 hours, and a local time minute hand (hereinafter, an LT minute hand) that makes one rotation in 60 minutes. 4b, 5b,
The time difference is displayed by the two hands 6b. 7 to table rings date by which there Date needle 7a in the calendar display unit makes one round trip in the period of one month in the swing drive.

Reference numeral 8 denotes a crown as an external operating member. The number of steps for pulling out the external switch can be set to two steps. In normal use, the crown is used at the most depressed position (zero position). When the clock is rotated clockwise, the date can be quickly corrected, and when the second hand is further pulled down, the second hand stops at an arbitrary position, and when the crown 8 is rotated left and right, the hour hand 1 and the minute hand 2 rotate to the current time. Needle adjustment can be performed. 9, 10 and 11 are push buttons (hereinafter abbreviated as PB) (1) which are external operation members for correcting the hands of the LT hour hands 4a, 5a and 6a.
(2) and (3), each time the button is pressed once
(1) First time difference display section 4 at 9, second time difference display section 5 at PB (2) 10, third time difference display section 6 at PB (3) 11.
LT hour hands 4a, 5a, 6a can be corrected in hourly units. This hand correction is always possible by operating each of the PBs 9, 10 and 11 irrespective of the position of the number of steps of pulling out the crown 8.

Next, the basic structure of the timepiece movement will be described. In the watch movement of FIGS. 2 and 3,
A, which is indicated by hatching at the approximate center of the watch movement, is a large-scale mass-produced small three-hand module (hereinafter referred to as a basic module). I'm trying.

Referring to FIG. 7 or FIG. 8, the timepiece movement structure of the present invention has a basic module A disposed on a back cover side with a main plate 12 serving as a base of the basic module A interposed therebetween. Has a two-layer structure in which a local time display wheel train 15 and a calendar display wheel train 16 based on the underlay 14 are disposed in a hollow section in the cross section between the main plate 12 and the dial 13. 12 and the lower support 14 are temporarily fixed by a screw fastening portion 17 (refer to FIG. 5) provided at one place to stabilize a part in the course of assembly.

The basic module A is supported by a base plate 12, a train wheel bridge 18, a middle bridge 19 and the like, and constitutes a step motor 20 as an electromechanical converter.
A fifth wheel 22, a fourth wheel 23, a third wheel 24, a center wheel 25 or the like, an external operation switching mechanism including a winding stem 26 for fixing the crown 8 as a component,
Further, a circuit block 28 having an IC chip 28a and a quartz oscillator 28b mounted thereon is provided together with a battery 27 as a power source of the electronic timepiece.

The fourth wheel & pinion 23, which is disposed substantially at the center of the basic module A and to which the second hand 3 is fixed, is driven by the rotor 21 via the fifth wheel & pinion 22. Further, the rotation of the fourth wheel & pinion 23 is transmitted via a third wheel & pinion 24 to a central wheel 25 to which the minute hand 2 is fixed. The center wheel 25 has a center gear 25a and a minute pinion 2
5b. A minute transmission wheel 29 for driving a local time display wheel train 15 described later is engaged with the minute kana 25b.
The transmission wheel 29 is driven at the same speed as the center wheel 25 at a rate of one rotation every 60 minutes.

The center wheel 25 constitutes a hand wheel train and meshes with a minute wheel 30 of the first day constituting a back wheel train for correcting hands at normal time (see FIG. 3). The minute wheel 30 of the first day
Drives the center wheel 25 in conjunction with the rotation of the ratchet wheel 31 which rotates by engaging with the winding stem 26. That is, when the crown is pulled to the two-stage state for adjusting the hands, the mandrel 32 and the kanuki 3 which constitute the external operation switching mechanism are well known.
The third wheel 31 is moved to a position where it engages with the small iron wheel 34 in conjunction with the winding stem 26, and in conjunction with the rotation operation of the crown 8, the small iron wheel 34 → the minute transmission wheel 35 → the first minute wheel 30 The torque is transmitted through the path.

Next, the local time display wheel train 15 and the calendar display wheel train 16 will be described with reference to FIGS.
Referring to FIG. 6, the center wheel 25 engaged with the center wheel 25 disposed in the basic module A has a center hole engaged with the outer diameter of the intermediate body 25c of the center pin 25b, and the center wheel 25 is connected to the center wheel 25. The convex portion 29a provided on the wheel 29 is formed so as to mesh with a part of the tooth profile 25d left on the intermediate body portion 25c in a planar manner. The engagement of the convex portion 29a with the tooth shape 25d in this manner ensures that the rotational force transmitted to the center wheel 25 is transmitted to the next wheel. Therefore, according to the embodiment of the present invention, the transmission wheel 29 is attached to the center wheel 25 in comparison with the fixing structure in which the transmission wheel made of synthetic resin is press-fitted and fixed to the middle body of the center wheel as seen in some watches. When applying or removing, it is less likely to apply an excessive load to other components, so that components can be stably incorporated without damage.

Referring to FIG. 4 and FIG.
9 is transmitted to both the second minute wheel 36 and the third minute wheel 37 which are arranged so as not to overlap in a plane. The former minute wheel 36 on the second day is indicated by the first time difference display section 4.
And the second second wheel (1) 38 of the second time difference display section 5 and the dual second wheel (2) 39 and the minute wheel 29 of the second time difference display section 5 are disposed substantially at the center of a substantially delta-shaped plane space. And a gear portion (1) 36a, a gear portion (2) 36b, and a pinion portion 36c. And the gear part (1) 3
6a meshes with the transmission wheel 29, and the gear portion (2) 36b is a dual second gear (1) 38a forming a dual second wheel (1) 38 and a dual second gear forming a dual second wheel (2) 39. The pinion portion 36c meshes with the gear (2) 39a, and further meshes with the hour wheel 40 to which the hour hand 1 indicating the normal time is fixed, and the respective meshing portions are arranged so as not to overlap with each other in cross section.

The gear portion (1) 36a and the gear portion (2) 3
Reference numeral 6b denotes an idler wheel for transmitting the rotation of the transmission wheel 29 and the rotation of the dual second gears (1), (2) 38a, 39a so that they rotate simply at the same speed.
As shown in FIG. 2, the meshing cross-sectional arrangement is made into two layers so that the gear portion (1) 36a and the gear portion (2) 36b mesh with each other, so that the tooth number ratio of the tooth profile is reduced through the conventional idler wheel. Can now be selected relatively freely for the train wheel. For this reason, the dividing wheel 29 and the dual second gear (1)
The number of teeth of the 38a and the dual second gear (2) 39a are not common even if they are not common. In particular, the dual second wheel (1) adapted to the planar arrangement of the time difference time display unit in consideration of the design of the timepiece. 38 and the dual second wheel & pinion (2) 39 can be disposed at appropriate positions where they engage with each other. The latter minute wheel 37 on the third day is, as shown in FIG.
Dual second wheel (3) 41 constituting the time difference display section 6
Meshes with the dual second gear (3) 41a of the second
Like the minute wheel 36, the rotation of the minute transmission wheel 29 is transmitted at the same speed.

The LT hour hands 4a, 5a, 6a and the LT minute hand 4b, which are constituent elements of the time difference display sections 4, 5, 6 described above,
The local time display wheel train 15 for fixing and rotating the wheels 5b and 6b is driven by the following wheel train configuration. In other words, the wheel train configuration of the first time difference time display unit 4, the second time difference time display unit 5, and the third time difference time display unit 6
9 to the second minute wheel 36 or the third minute wheel 37 have the same wheel train configuration, so the first time difference display section 4 will be described with reference to FIGS. Only the wheel train configuration at the center will be described.

The center portion of the train wheel constituting the first time difference time display section 4 employs a so-called planetary wheel system and has the following configuration. That is, the center shaft 1 is
A dual wheel (1) 43 and a dual second wheel (1) 38 are engaged with the center shaft 14a, and a dual hour wheel (1) is engaged with the dual second wheel (1) 38. 46 are engaged. The dual wheel (1) 43 is formed with 11 teeth, and its rotation is regulated by a dual jump control spring. The dual second wheel (1) 38 is a dual second gear (1) 38a that meshes with the second minute wheel 36, and the planetary wheel (1) provided up and down via the dual second gear (1) 38a. , (2) 44, 45. The planetary wheel (2) 45 passes through the rotary hole 38b provided in the dual second gear (1) 38a and is concentric with the planetary wheel (1) 44.
Are integrally formed. The dual hour wheel (1) 46 has an LT hour hand (1) 4a fixed thereto and is formed with 12 teeth.
45 and are arranged on the same axis as the dual wheel (1) 43 and the dual second wheel (1) 38. The dual hour wheel (1) 46, the second wheel & pinion (1) 38, and the dual hour wheel (1) 43 are provided in a hollow portion in a cross section of the dial 13 and the dual hour wheel (1) 46. Due to the reaction force of the spring of the dual needle seat (1) 47 having
It is always pressed to the underside 14 side.

The dual second wheel (1) 38 that rotates at the same speed as the center wheel 25 via the minute wheel 36 on the second day is configured to make one rotation in the clockwise direction in 60 minutes. As the dual second wheel (1) 38 rotates, the planetary wheel (1) 44 meshing with the dual wheel (1) 43 moves along the locus of the tooth form 43a of the dual wheel (1) 43 whose position is regulated. , And rotates clockwise around a rotary hole 38b provided in the dual second gear (1) 38a. Further planetary cars (2) 4
5 is a dual hour wheel (1) 4 that rotates in the same direction in synchronization with the planet wheel (1) 44 and meshes with the planet wheel (2) 45.
6 is the dual second wheel (1) 3 because the pressing force from the tooth profile of the planet wheel (2) 45 overcomes the frictional force between the dual needle seat (1) 47 and the dual hour wheel (1) 46.
8 and at a speed of 1/12 reduction speed, and rotates clockwise in the same manner as the dual second wheel (1) 38. The dual 2
Regarding the driving method of the second wheel (1) 38 and the dual hour wheel (1) 46, the same rotation operation is performed not only at the time of normal hand operation but also at the time of hand adjustment.

Next, LT for displaying the local time
The correction of the time difference of the hour hand will be described with reference to FIGS.
A dual correction lever (1) 49, which is disposed near the dual wheel (1) 43 and operates around a boss 48a integrally formed with a calender plate 48 made of synthetic resin, is a PB (1) 9 as an external operation member. In conjunction with, PB (1) 9-1
Each time the push operation is performed, the dual wheel (1) 43 engaged with the tooth profile 43a is fast-forwarded for one hour. In the state where the dual correction lever (1) 49 has released the PB (1) 9,
It is always stopped at a predetermined position by a return spring 50 arranged on the outer peripheral side of the timepiece movement.

The hand setting and the correction mechanism of the first time difference time display unit 4 have been described above, but other time difference time display units 5 and 6 have been described.
Has basically the same mechanism. In particular, the second time difference display unit 5 is connected to the dual correction lever (1) 49 in order to interlock with the PB (2) 10 arranged at 2 o'clock in order to improve the operability at the time difference correction. In comparison, the external shape of the dual correction lever (2) 51 is different, but the operation direction at the time of correction and the action of the return spring are the same.

As described above, since the normal time display wheel train and the time difference time display wheel train are interlocked, the time difference time display unit can be simultaneously adjusted at least by the normal time hand adjustment. Since the time difference correction can be set by the one-touch operation of the push button described above, the operation method is easy to understand and the user is unlikely to make an erroneous operation, and it is possible to prevent the conventional display misalignment.

Next, a calendar mechanism in which the date hand 7a swings in a one-month cycle will be described with reference to FIGS. The hour wheel 40 having the cylindrical portion 40a which meshes with the pinion 36c of the second minute wheel 36 described above and fixes the hour hand 1 for displaying the normal time is attached to the cylindrical portion 4a with respect to the cylindrical gear 40b.
0a has a date transmission gear 40c on the surface on the opposite side, and the date transmission gear 40c rotates once in 12 hours,
The rotational force is transmitted to the date wheel 52, which is the next gear.

The date wheel 52 is a date transmission gear 40c.
, And makes one rotation in 24 hours. Further, the date wheel 52 is integrally formed with a date nail 52a for transmitting rotation to a date intermediate wheel (2) 53 constituting a cam device for swinging and moving the date hand 7a in a one-month cycle. The date nail 52a is a middle day wheel (2) 5
3 and once every 24 hours,
At the same time as rotating 31 times, the rotation force is transmitted to the date wheel 55 and the date wheel 56 to which the date hand 7a is fixed via the date intermediate wheel (1) 54.

The date wheel 52 is rotated around the date axle 14b implanted in the underlay 14, but when the date hand 7a described later is quickly corrected, the date intermediate wheel (2) 53 and the date nail are used. When the 52a interferes, the rotary hole 52b that engages with the date turning axle 14b is elongated so as not to damage the parts,
For example, when an external force is applied to the date intermediate wheel (2) 53 via the external operating member, the rotational force from the date intermediate wheel (2) 53 is rotated by the date rotating claw 52a by the elongated rotary hole 52b. Although transmitted to the car 52, the date driving wheel 52 is separated from the meshing position by the rotational force of the date intermediate wheel (2) 53, so that there is no problem.

A cam device for swinging and moving the date hand 7a includes a cam 53a integrally formed with the date intermediate wheel (2) 53, and a tooth profile 54a meshed with the date wheel 55 with respect to the rotation center of the date intermediate wheel (1) 54. A lever 54b provided on the side opposite to
The lever portion 54b of the date intermediate wheel (1) 54 is constantly pressed to the cam 53a side via the cam, and the date reversing wheel 5 provided for reliably operating the lever portion 54b along the trajectory of the cam 53a.
6 and a date return spring 57a. The profile of the cam 53a is formed such that the date intermediate wheel (1) 54 is driven at a constant speed, and as a result, the date hand 7a moves in the clockwise direction at equal intervals. The date intermediate wheel (2) 53 is a spring-type spring 57b integrated with the back plate 57.
To stabilize the static position of the cam 53a and the lever 54b to prevent the date hand 7a from swaying in the plane direction, and to stabilize the engagement with the date finger 52a to quickly correct the date hand 7a. Quick correction lever 5 that constitutes the mechanism
8 is ensured.

The mechanism for quickly correcting the date hand 7a will be described with reference to FIG. The quick correction of the date hand 7a is performed by the quick correction claw 59 attached to the pinion wheel 31 which engages in the axial direction of the winding stem 26 constituting the external operation switching mechanism mounted on the basic module A, and the calendar plate 48. When the crown 8 is rotated in a one-step pulling state of the winding stem 26, the quick adjusting claw 59 is interlocked with the rotation of the winding stem 26. It rotates together with the handwheel 31 and engages with the shape of the convex portion 58a provided on the quick-correction lever 58 to rotate the quick-correction lever 58 about the boss 48b. A return spring 58b is integrated with the quick-correction lever 58 so that a rotational force is always applied so that when the engagement between the quick-correction claw 59 and the shape of the convex portion 58a is released, the quick-return lever 58 returns to the rest position before operation. Have been. The return spring 58b is connected to the rotation center 58 of the quick correction lever 58.
c is formed integrally with a quick-correction lever body 58d having a shape substantially including c, and always comes into contact with a stopper wall 48c (shown in FIG. 4) provided on the calendar plate 48 to obtain a return force. Further, the quick-correction lever 58 includes a feed pawl 58e for rotating the date intermediate wheel (2) 53 at least by 1/31 at a time in the above-mentioned fast-corrected state, and the feed pawl 58e is brought into a rest position before operation when the correction is completed. On return, the Japan-China car (2)
A spring portion 58f for providing an elastic force to the feed claw 58e so as to prevent the feed claw 58e from being reversed by interfering with 53 is integrally formed.

The local time display wheel train 15 and the calendar mechanism are screwed together with the underlay 14 and the calendar plate 48 to the base plate 12 of the basic module via the back plate 57 having substantially the same shape as the profile of the clock movement. By tightening at 60, the cross-sectional position is regulated.

Next, the operation of correcting the time difference between the LT hour hand and the LT minute hand will be described with reference to FIGS. FIG. 9 is a plan view of the train wheel unit showing a state in which the first time difference time display unit 4 displays 12 o'clock with normal hand movement, and FIG. 10 is a diagram in which the first time difference time display unit 4 uses an external operating member. FIG. 11 is a plan view of the wheel train showing a state in which the dual car is rotated one pitch in the counterclockwise direction and delayed by one hour by the operation of FIG.
It is a top view of the wheel train part which shows the state which carried out pitch rotation and advanced 1 hour.

During normal hand operation, the minute hand 2 of the basic module A is used.
L meshes with the gear wheel (2) 36b of the second date reverse gear 36, which meshes with the transmission wheel 29 integrally engaged with the center wheel 25 that rotates clockwise and rotates counterclockwise.
Dual 2 with T minute hand 4b fixed and rotated clockwise
The meshing of the second wheel (1) 38 with the tooth portion 38c of the dual second wheel (1) 38a and the backlash = b1 indicate that the dual second wheel (1) 38a of the dual second wheel (1) 38 leads clockwise. A dual wheel (1) with 11 teeth that exists in the direction of rotation and is regulated by a dual jump control spring (1) 42
43 is provided on the dual second wheel (1) 38 and meshes with the planetary wheel (1) 44 having 12 teeth which is regulated by the dual second wheel (1) 38 and revolves clockwise in the clockwise direction = b2 The planetary wheel (1) 44 exists in the direction in which the planetary wheel (1) 44 rotates forward in the clockwise direction, and the planetary wheel (12 teeth) ( 2) engagement of 45 with dual hour wheel (1) 46 having 12 teeth Backlash = b3 is dual hour wheel (1) 4
No. 6 is present in the clockwise rotation direction and is normally moving.

Next, by operating the external correction member PB (1) 9 and rotating the dual wheel (1) 43 counterclockwise by one pitch (360/11) ゜ by the dual correction lever (1) 49, The planetary wheel (1) 44 and the planetary wheel (2) 45 both rotate (360/11) × (11/12) ゜ counterclockwise, and the dual hour wheel (1) 46 rotates clockwise (360/11).
11) × (11/12) × (12/12) = 30 °, and only the LT hour hand 4a is delayed by one hour.

Here, the above-described backlash will be described. When the dual wheel (1) 43 is rotated counterclockwise, the dual second gear (1) 38a rotates counterclockwise similarly to the dual wheel (1) 43 due to the pressing force of the dual needle seat (1) 47. To try, but the second day reverse gear 3
6 gear part (2) 36b and dual second gear (1) 38
The direction of the backlash = b1 meshing with the tooth portion 38c of a does not change during normal hand operation, and the LT minute hand 4b fixed to the dual second wheel (1) 38 is not affected by the backlash = b1. The minute hand 2 displaying the time and the LT minute hand 4b displaying the local time do not shift.

In this state, the direction of meshing between the dual wheel (1) 43 and the planetary wheel (1) 44 and the direction of backlash = b2 are not changed from those during normal hand operation, and are not affected by the backlash = b1. Further, the direction of the meshing backlash = b3 between the planetary wheel (2) 45 and the dual hour wheel (1) 46 is opposite to the direction during normal hand operation, and the dual hour wheel (1)
46 is not exactly 30 ° as described above, but the rotation angle is reduced by the backlash = b3, and the LT hour hand 4a is at a position slightly advanced from 11:00. Normally, the backlash including the wobble of this kind of wheel train of the watch size is about 0.05 mm, and it is about 3 ° in the case of the dual hour wheel (1) 46 having 12 teeth. The LT hour hand 4a stops at a position advanced by about 6 minutes.

Next, assuming that the dual wheel (1) 43 is rotated clockwise by PB, crown or the like, the pressing force of the dual needle seat (1) 47 causes the dual second gear (1) 38a to rotate the dual wheel (1) 38a. 1) Attempts to rotate clockwise similarly to 43, and the gear portion (2) of the second minute wheel 36
The direction of backlash = b1 in which the engagement between the gear 36b and the tooth portion 38c of the dual second wheel (1) 38a is opposite to the direction during normal hand operation, and the LT minute hand 4b fixed to the dual second wheel (1) 38 The clock is rotated clockwise by the backlash = b1, and the LT minute hand 4b displaying the local time is slightly advanced from the minute hand 2 displaying the home time.
Backlash = b1 is minute notification wheel 29 and second minute wheel 3
The backlash with the gear portion (1) 36a of No. 6 shows that the dual second wheel (1) 38 is at about 4 ° and the LT minute hand 4b is at about 40 seconds in consideration of the backlash of the minute wheel 36 on the second day. Stop at the advanced position.

Further, in this state, the direction of meshing backlash = b2 between the dual wheel (1) 43 and the planet wheel (1) 44 is opposite to the direction during normal hand operation, and the planet wheel (1) 44
And the rotation angle of the planetary car (2) 45 is reduced by the amount of backlash = b2. Further, the meshing of the planetary wheel (2) 45 and the dual hour wheel (1) 46 rotates the dual hour wheel (1) 46 in the direction of the backlash = b3 as in normal hand operation, but at just 30 ° No backlash = b
The rotation angle decreases by two, and the LT hour hand 4a is at a position slightly delayed from 1:00. The backlash b2 is also the same as the above-mentioned backlash b3. In the case of a dual hour wheel (1) 46 having 12 teeth, it is about 3 ° and the LT hour hand 4
a stops at a position delayed by 6 minutes.

As described above, the time difference of the local time is corrected by rotating the dual vehicle (1) 43 counterclockwise to LT.
When correcting the hour hand 4a to be delayed by one hour, LT
There is no deviation between the minute hand 4b and the minute hand 2 indicating the home time, and only the LT hour hand 4a stops at a position advanced by about 6 minutes. However, when the time difference of the local time is corrected in a direction in which the dual car (1) 43 is rotated clockwise to advance the LT hour hand 4a by one hour, the LT minute hand 4b is approximately 40 times shorter than the minute hand 2 displaying the home time. It stops at a position advanced by about a second, and conversely, the LT hour hand 4a stops at a position delayed by about 6 minutes.

Generally, in the case of a timepiece display type timepiece, the time is read instantaneously at a delicate angle between the hour hand and the minute hand, and the time difference of the local time is corrected by rotating the dual wheel (1) 43 clockwise. The hour hand is delayed so that the LT hour hand 4a is corrected to advance in the direction of one hour, and the deviation of the angle between the hour hand and the minute hand in the direction in which the minute hand advances makes it difficult to read even for a short time. Further, when a plurality of clocks such as a home time and another local time are displayed on one clock, the time is immediately compared with the other display times, so that it is even more so.
In addition, the user can use the apparatus safely even if the time is very short, rather than the time being delayed.

Next, a calendar mechanism in which the date hand 7a swings in a one-month cycle will be described with reference to FIGS. The hour wheel 40 having the cylindrical portion 40a that engages with the pinion portion 36c of the second minute wheel 36 described above and fixes the hour hand 1 for displaying the normal time is provided with respect to the cylindrical gear 40b.
0a has a date transmission gear 40c on the surface on the opposite side, and the date transmission gear 40c rotates once in 12 hours,
The rotational force is transmitted to the date wheel 52, which is the next gear.

The date driving wheel 52 includes a date transmission gear 40
It drives at a reduction ratio of 1/2 with respect to c and makes one revolution in 24 hours. Further, the date wheel 52 is integrally formed with a date nail 52a for transmitting rotation to a date intermediate wheel (2) 53 constituting a cam device for swinging the date hand 7a in a one-month cycle. The claw 52a is a Japanese-Chinese vehicle (2)
The date indicator wheel 55 and the date return wheel are engaged with the date indicator 53 once every 24 hours to rotate the date intermediate wheel (2) 53 by 1/31 turn and to fix the date hand 7a via the date intermediate wheel (1) 54. The torque is transmitted to 56.

The date indicator wheel 52 rotates about the date indicator axle 14b implanted in the support 14, but when the date hand 7a described later is quickly corrected, the date intermediate wheel (2) 53 and the date indicator wheel are used. When the claws 52a interfere with each other, the rotary hole 52b that engages with the date turning axle 14b is elongated to prevent damage to the parts, and an external force is applied to the date intermediate wheel (2) 53 via, for example, an external operating member. In this case, the rotational force from the date intermediate wheel (2) 53 is transmitted to the date wheel 52 via the claw 52a by the slotted hole 52b, but the date wheel 52 is the date intermediate wheel (2).
Since it is separated from the meshing position by the rotational force of 53, there is no problem at all.

A cam device for swinging and moving the date hand 7a includes a cam 53a integrally formed with the date intermediate wheel (2) 53, and a tooth profile 54a meshing with the date wheel 55 with respect to the rotation center of the date intermediate wheel (1) 54. A lever 54b provided on the side opposite to
, The lever 54b of the date intermediate wheel (1) 54 is constantly pressed toward the cam 53a, and the date return wheel 56 provided to reliably operate the lever 54b along the trajectory of the cam 53a;
The cam 53a is constituted by a date return spring 57a (shown in FIG. 5), and the cam 53a is driven by the date intermediate wheel (1) 54 at a constant speed, and as a result, the date hand 7a moves in the clockwise direction at regular intervals. Is formed.

The date intermediate wheel (2) 53 is positioned by a spring control spring 57b (shown in FIG. 5) integrated with the back plate 57 to stabilize the static positions of the cam 53a and the lever 54b.
In addition to preventing the horizontal movement of the date hand 7a in the planar direction and stabilizing the engagement with the date nail 52a, the date hand 7a
Correction lever 58 (shown in FIG. 5) constituting the quick correction mechanism of FIG.
And the engagement with it.

The mechanism for quick correction of the date hand 7a is attached to a pinion wheel 31 which engages in the axial direction of the winding stem 26 constituting an external operation switching mechanism mounted on the basic module A (FIG. 3). It is constituted by a quick-correction claw 59 and a quick-correction lever 58 that operates around a boss 48b integrally formed with the calender plate 48. When the crown 8 is rotated in a one-step pulling state of the winding stem 26, the quick-correction claw 59 is formed.
Rotates together with the thumbwheel 31 in conjunction with the rotation of the winding stem 26, and engages with the shape of the convex portion 58a provided on the quick correction lever 58 to rotate the quick correction lever 58 about the boss 48a.

The quick correction lever 58 is provided with the quick correction claw 59.
The return spring 58b is integrated so that a rotational force always acts so as to return to the rest position before operation when the engagement state of the and the convex portion 58a is released. The return spring 58b is formed of a quick-correction lever body 58d so as to substantially encompass the rotation center portion 58c of the quick-correction lever 58, and has a return force by constantly abutting against a spring stopper wall 48c provided on the calendar plate 48. ing. Further, the early correction lever 58 is provided with at least 1/3 of the date intermediate vehicle (2) 53 in the above-mentioned early correction state.
A feed claw 58 e for one rotation, and a feed claw 58
When e is returned to the rest position before the operation at the time of completion of the correction, the feed claws 5 do not interfere with the intermediate day wheel (2) 53 and do not reverse.
A spring portion 58f for giving elastic force to 8e is integrally formed.

The aforementioned local time display wheel train 15 and the calendar mechanism are screwed together with the underlay 14 and the calendar plate 48 via the back plate 57 having a shape substantially equivalent to the profile of the clock movement. The cross-sectional position is regulated by tightening screws.

[0053]

As described above, according to the present invention, the normal time display wheel train and the time difference time display wheel train are interlocked, so that at least the normal time hand setting causes the time difference time display unit to simultaneously set the hands. The time difference display can be set by one-touch operation of the push button on the time difference time display section, so that the operation method is easy to understand and the user is less likely to make an erroneous operation. In addition, it is possible to prevent misalignment of the display as in the past.Furthermore, depending on the rotation direction, such as correction of the time difference due to the rotation of the crown, the normal time difference due to the wheel train backlash between the normal time display wheel train and the time difference time difference display wheel train There is no deviation between the minute hand of the time and the minute hand of the local time. In addition, the local time hour hand is always influenced by the backlash of the planetary gear train, not in the delay direction, but in the forward direction.

Also, unlike the conventional multi-time display timepiece incorporating a plurality of movements, the position of the external operation member with respect to the position of the time difference time display section is not restricted, so that a timepiece with good design is obtained. In addition, since the normal time display pointer for the home time is longer than the time difference display section for the other local time, the display is easy to see like a normal three-hand clock.

Further, the number of parts of the movement can be reduced,
In addition, the number of assembly steps can be reduced and the cost of the movement can be reduced to lower the price, and the middle frame for fixing the movement in the watch case can be simplified. A multi-time display clock with high reliability can be obtained.

[Brief description of the drawings]

FIG. 1 is an external view of a timepiece showing an embodiment of the present invention.

FIG. 2 is a plan view of the left half of the timepiece movement showing the embodiment of the present invention as viewed from the back cover side.

FIG. 3 is a plan view of the right half of the timepiece movement showing the embodiment of the present invention as viewed from the back cover side.

FIG. 4 is a plan view of the left half of the timepiece movement showing the embodiment of the present invention, as viewed from the hands.

FIG. 5 is a plan view of the right half of the timepiece movement, showing the embodiment of the present invention, as viewed from the hands.

FIG. 6 is a sectional view of a main part of the wheel train mechanism of the timepiece of FIG. 1 according to the embodiment of the present invention;

FIG. 7 is a sectional view of a main part of the wheel train mechanism of the timepiece of FIG. 1 according to the embodiment of the present invention;

FIG. 8 is a sectional view of a main part of the wheel train mechanism of the timepiece of FIG. 1 according to the embodiment of the present invention;

FIG. 9 is a plan view of the train wheel unit showing a state in which the first time difference display unit 4 displays 12 o'clock with normal hand movement according to the embodiment of the present invention.

FIG. 10 shows a first time difference display unit 4 according to an embodiment of the present invention.
FIG. 5 is a plan view of the wheel train section showing a state in which the dual vehicle is rotated by one pitch in a counterclockwise direction and delayed by one hour by operating an external operation member.

FIG. 11 is a plan view of the wheel train showing a state in which the dual vehicle according to the embodiment of the present invention is rotated clockwise by one pitch and advanced one hour.

[Explanation of symbols]

 1 hour hand 2 minute hand 3 second hand 4,5,6 Time difference display 4a, 5a, 6a Local time hour hand 4b, 5a, 6a Local time minute hand 8 Crown 9,10,11 Push button 25 Center car 29 minute notification wheel 36 Second Day wheel 36a Gear portion (1) 36b Gear portion (2) 36c Kana portion 37 Third day wheel 38 Dual second wheel (1) 39 Dual second wheel (2) 43 Dual wheel (1) 44, 45 Planetary wheel 46 Dual cylinder wheel (1) 49, 51 Dual correction lever 50 Return spring 52 Day wheel 55 Day wheel

Claims (1)

(57) [Scope of request for utility model registration] A first pointer display section for displaying a first time;
It has a second pointer display for displaying two times, and both displays are
A correction mechanism for one of the display units in a watch that can be corrected vertically
Is a dual car, dual dual car, and dual dual car
A planetary vehicle provided on the vehicle and meshing with the dual vehicle;
Regulate dual-cylinder wheels that mesh with star wheels and the dual-wheel vehicles
Control spring driven by an external operating member
Material, the dual hour wheel is the dual second wheel
Of the dual car
It is configured to rotate by a fraction of an integer with one pitch rotation.
And the dual hour wheel is rotated counterclockwise by the correction member.
A pointer-type multi-time display clock characterized by being configured to rotate by one pitch only in the direction .