JPH0626866Y2 - Analog clock - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an analog timepiece having a calendar display member for displaying the time with a pointer.

[Outline of device]

The present invention provides an analog timepiece having a calendar display member, which has a hole in the central portion which is interlocked only when the winding stem is in the first stage, and which has the shaft of the winding stem as a rotation center. A calendar correction wheel that is rotatably incorporated between the correction wheel interlocking section and the groove section and has a gear wheel on the outer peripheral portion, and a hole at the center that interlocks only when the winding stem is in the second stage. With the shaft portion as the center of rotation, the calendar correction wheel interlocking portion of the winding stem and the clutch wheel rotatably incorporated between the clutch wheel interlocking portion are provided.

And the size of the watch movement is 13mmx15
The calendar correction mechanism can be mounted on a so-called 5 1/2 type small timepiece of the mm class.

[Conventional technology]

As a conventional winding stem switching mechanism, a handwheel 1 having a needle-turning tooth profile 1a, a calendar correcting tooth profile 1b, and a square hole 1c slidably engaged with a corner 2a of a winding stem 2 shown in FIG. In conjunction with the movement of the winding stem 2 by the rod 3 and the bar 4, at the needle-turning position of the winding stem 2, the needle-turning tooth profile 1a of the clutch wheel 1 and the needle-turning transmission wheel 5 are engaged to rotate the winding stem 2. Needle wheel train 6
I was transmitting the needle to the needle. At the calendar correction position of the winding stem 2, when the calendar wheel 1 is moved to a position where the calendar correction tooth profile 1b of the clutch wheel 1 and the tooth profile 7a of the date indicator 7 are meshed with each other, the clutch wheel 1 is rotated. By this, the date dial 7 is rotated and the calendar is corrected. Further, in the conventional example shown in FIG. 7, the clutch wheel 1 and the calendar correction wheel 8 are separately arranged on the winding stem, and both of them are held in the same position even if the winding stem 2 moves, At the calendar correction position and the needle turning position, the clutch wheel 1 and the calendar correction wheel 8 are timely coupled with the winding stem and the tightening margin to constitute a switching mechanism for forming a correction state.

[Problems to be Solved by the Invention] However, it has been difficult to provide a small-sized movement with a calendar having a good design by the switching mechanism as shown in the conventional example. That is, in the conventional example shown in FIG. 6, the handwheel is moved to three positions, namely, the normal position, the calendar correction position, and the needle-turning position, and the groove for accommodating the bolt for moving the handwheel to a predetermined position. Therefore, the required size on the winding stem that the clutch wheel occupies is long, which has been an obstacle to reducing the size from the center of the movement to the outer shape of the movement. Further, in the conventional example shown in FIG. 7, when the clutch wheel and the calendar correction wheel are separated and independent,
No.6 because the movement of the spelling at the time of calendar correction was removed.
Although the degree of freedom for downsizing is increased compared to the conventional example in the figure, the calendar correction wheel is located on the outer side of the movement than the switching spring part, and the correction teeth of the calendar correction wheel are printed on the date wheel. It meshes with the lower part. As a result, a ground plate or the like is required for positioning the calendar correction wheel and guiding the winding stem outside the date dial. As described above, the conventional structure has a problem that it is impossible to provide a small-sized switching mechanism having a good design.

Therefore, the object of the present invention is to solve the conventional problem of downsizing the switching mechanism of the movement with a calendar, and to store the switching mechanism for the calendar in a flat size called 51/2 type, so that the calendar clock can be made compact. It is intended to provide a switching mechanism capable of expanding a wide range of movements with improved versatility.

[Means for Solving the Problems]

In order to solve the above problems, this invention has the following configuration. That is, the mountain shape formed on a part of the winding stem so that the winding stem can be stopped at three positions including the normal position (carrying position), the calendar correction position, the needle turning position, and the winding stem that is positioned and supported by the switching spring. , A hand wheel that constantly meshes with the needle wheel train and a calendar wheel that constantly meshes with the calendar correction mechanism are rotatably guided to the winding stem in the normal position of the winding stem, and the winding stem is timed at the calendar correction position and the needle turning position. In the switching mechanism that performs coupling by interference such that the rotation can be transmitted, the clutch wheel and the calendar correction wheel are located inside the date wheel tooth tip inner diameter, and are formed in a shape close to a spur gear.
Further, the winding stem is positioned and the switching portion for setting the switching weight is set at a position closest to the outer shape of the movement.

[Action]

By using the switching mechanism configured as described above, a switching mechanism with a calendar correction mechanism, which has been difficult to miniaturize in the past, can be used.
It can be stored in a plane size movement called a 51/2 type with a short diameter of about 13 mm and a long diameter of 15 mm. As a result, the 51/2 type, which is a typical female watch size of a straight timepiece, can be used as a basic movement, and can be deployed while maintaining a high level of parts combined use from a female watch to a male watch of a calendar watch.

〔Example〕

The invention will be described below with reference to FIGS. 1, 2, 3, 4, and 5. In the drawing, reference numeral 1 is a base plate, and the outer size is called a 51/2 type and has a minor axis of about 13 mm and a major axis of about 15 mm. The circuit block 10, the coil block 11, the stator 12, and the rotor 1 are provided on the main plate 9.
3, 5th wheel 14, 4th wheel 15, 3rd wheel 16, Hinoura 1
7, a front train wheel including a minute wheel 18 and the like, a train wheel bridge 19 which pivotally supports the front train wheel and also has a function of pressing other parts, a switching spring 20 and a battery 21 which constitute a switching mechanism, and are arranged respectively. It is fixed to the main plate 9 by means such as screwing or the like, and is held in a state capable of being operated and rotated. On the back side of the main plate 9, the date indicator 7, the date indicator driving wheel 21, the correction transmission wheel 22, the calendar correction wheel 21,
Day correction wheel 24, date indicator presser 2 that holds the calendar components
5. The day wheel 28, which is rotatably installed in the hour wheel 26 by the day wheel stop seat 29, is incorporated. Next, the switching mechanism, which is the main part of the present invention, will be described in detail. The winding stem 26 guided by the lateral hole 9a of the main plate 9 can be positioned in the normal state of FIG. 1, the calendar correction state of FIG. 2, and the needle turning state of FIG. 3 by the angled portion 26a of the winding stem and the switching spring 20. is there.
For the winding stem 26, in addition to the angled portion 9b, from the angled portion 26a toward the center of the clock, a calendar correction guide portion 26b, a calendar correction wheel rotating corner portion 26c, a clutch wheel 27 guide portion 26d, a clutch wheel 27 rotation. The corner portion 26e is formed. When the winding stem 26 is located in the normal state shown in FIG. 1, both the hand wheel 27 and the calendar correction wheel 28 are guided by the respective guide portions of the winding stem 26 and do not interfere with normal hand movement. A tooth profile forming portion 27a is formed on the clutch wheel 27 so that the back wheel 17 of the day is formed.
Always meshes with. The calendar correction wheel 28 is formed in the shape of a spur gear and has a tooth profile 28a formed on the outer peripheral portion thereof, which is constantly meshed with the correction transmission wheel 22. The clutch wheel 27 and the calendar correction wheel 28 are arranged inside the date indicator 7 for displaying the calendar and have the above-mentioned configuration. Explaining the calendar correction state of FIG. 2, the winding stem 26 is at the calendar correction position which is pulled out by one stage. Corner 26 for rotating calendar correction wheel of winding stem 26
c has moved to the position of the calendar correction vehicle 28. When the winding stem is rotated at this position, the winding stem 26 and the corner portion of the calendar correction wheel 28 are engaged, and the correction transmission wheel 22 is rotated by the tooth portion 28a. When the winding stem 26 is rotated counterclockwise here, the correction transmission wheel 2
The calendar correcting wheel 23 that meshes with the wheel 2 and can swing along the elongated hole of the main plate 9 meshes with the tooth profile of the date indicator 7 to correct the date. Winding true 2
When 6 is rotated clockwise, the calendar correction wheel 23 engages with the day correction wheel 24, which is always in mesh with the tooth profile of the day wheel, to correct the day.
Next, the needle turning state in FIG. 3 is a state in which the winding stem 26 is further pulled out one step from FIG. At this time, since the calendar correction wheel rotating corner portion 26c of the winding stem 26 comes out of the corner portion of the calendar correction wheel 28, calendar correction is not performed even if the winding stem 26 is rotated. At that time, the corner portion 26e for rotating the clutch wheel 26 of the winding stem 26 enters into the clutch wheel 27 and is brought into a state of meshing with the corner portion of the clutch wheel 27. When the winding stem 26 is rotated in this state, the back wheel 17 on the day that meshes with the pointer wheel train is squeezed by the hand wheel 2
7 rotates to perform needle turning. Further, in the present invention, the engagement between the clutch wheel, the calendar correction wheel, and the winding stem has been described by using the corners, but the present invention can be realized without any problem even if the coupling method by the interference is used.

[Effect of device]

As described above, this invention has developed a straight movement by storing a changer including a calendar correction machine and a needle turning mechanism in the plane size of a small watch called 51/2 type, and developed a straight movement from there For the purpose of expanding to a man-owned function timepiece and improving the duality of parts to reduce the cost, all typical sizes from straight watches to man-owned function watches can be achieved.

[Brief description of drawings]

FIG. 1 is a sectional view showing a normal state of the embodiment of the present invention, and FIG.
FIG. 4 is a sectional view showing a calendar correction state of the embodiment of the present invention, FIG. 3 is a sectional view showing a needle turning state of the embodiment of the present invention, FIG. 4 is a front plan view of the embodiment of the present invention, and FIG. FIG. 6 is a plan view of a calendar portion of an embodiment of the present invention, FIG. 6 is a sectional view showing a first conventional example, and FIG. 7 is a sectional view showing a second conventional example. 1 …… Clock wheel 2 …… Mamaki 3 …… Sticking 4 …… Kanuki 5 …… Handwheel transmission vehicle 7 …… Day wheel 8 …… Calendar correction wheel 9 …… Main plate 10 …… Circuit block 11 …… Coil Block 12 …… Stator 13 …… Rotor 14 …… Fifth wheel 15 …… Fourth wheel 16 …… Third wheel 17 …… Backside wheel of the day 18 …… Minute wheel 19 …… Wheel train receiver 20 …… Switching spring 21 …… Day-turning car 22 …… Correction transmission car 23 …… Calendar correction car 24 …… Day correction car 25 …… Day wheel presser 26 …… Makima 27 …… Crush car 28 …… Calendar correction car

Claims (1)

[Scope of utility model registration request] 1. A switching mechanism for displaying a time with a pointer, having a calendar display member, rotating a hand with a clutch wheel, and rotating a winding stem at a predetermined position of a winding stem to correct a calendar with a correcting wheel. In the analog timepiece having (a), the front end portion has a clutch wheel interlocking portion that rotates the clutch wheel in a state where the winding stem is pulled out to the second step, and the crown wheel interlocking portion has a crown side, It has a calendar correction car interlocking part that prevents the calendar correction car from rotating with the winding stem pulled out to the first stage, and the 0th, 1st and 2nd stages of the winding stem are provided on the crown side of the calendar correction car interlocking part. A winding stem having a plurality of groove portions and mountain portions for positioning the step and forming a shaft portion guided by the guide portion of the winding stem supporting member on the crown side of the groove portion; A winding stem positioning member having a winding stem positioning portion that engages with the groove portion, C) A hole is provided in the center for interlocking the winding stem only in the first stage, and the shaft can be rotated between the calendar correction wheel interlocking portion and the groove of the winding stem around the axis of rotation. And a calendar correction wheel having a gear on the outer peripheral portion, and (d) a hole in the center that works only when the winding stem is in the second stage, and the shaft of the winding stem is the center of rotation. A clutch wheel that is rotatably incorporated between the calendar correction wheel interlocking section and the clutch wheel interlocking section of the winding stem; (e) a back wheel on a day that meshes with a gear of the clutch wheel; (f) the above An analog timepiece comprising: a correction transmission wheel that meshes with a calendar correction vehicle to form a train wheel that corrects a calendar display member.