JPH089657Y2 - Calendar clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a Sunday correction structure of a calendar clock capable of day correction and day correction by means of a single winding stem.

[Conventional technology]

In recent years, watchmakers often develop derivative models based on small women's movements without a calendar to construct large-scale men's functional watches. The reason for this is that the circuit part and train wheel part of the main structure can be used in combination, and it is possible to save labor in design and manufacturing.

A conventional Sunday correction mechanism is shown in FIG. This is a move cross-sectional view of a functional timepiece for women, including the basic model for women's size described above and the addition of Sunday and date correction structure. This movement is
A low-cost winding stem switching structure that does not use a switching mechanism for the reel, and uses the winding stem presser 2 that makes spring pressure contact with the two chevrons 1a formed on the winding stem 1, and pulls the winding stem to pull the winding stem 1a.
By changing the pressure contact holding portion of the winding stem presser 2 with respect to the winding stem with respect to the three troughs formed between the positions, the winding stem can be positioned in several stages in the axial direction. FIG. 4 shows the position of the 0th step of the winding stem in the normal carrying state. The plastic date correction wheel 3 arranged right above the winding and positioned by the wall of the main plate 7 has a part of the hole formed as a sandwiching portion 3a, and an outer diameter formed with a date correction tooth 3b which meshes with the date wheel. Has been done. Shaft diameter large step 1b of winding stem 1
Is arranged so that when the winding stem is pulled to the first stage, it engages with the pinching portion 3a of the date correction wheel and press-fits. As a result, it becomes possible to turn the date-correction car together with Makimasa. Similarly, ground plate 7
The plastic pinwheel 4 which is positioned by the wall of and is slidable with respect to the winding stem has a pinch 4a formed in a part of the hole, and has an external pinion gear 4b that meshes with the date wheel. Form. The front end of the winding stem is formed on the large diameter stepped portion 1c, and when the winding stem is pulled to the second step, the large diameter stepped portion 1c of the winding stem meshes with the pinching portion 4a of the hole of the clutch wheel. , Crimp with a tight fit. With this, the winding wheel is rotated by the winding true rotation operation,
Needle alignment is possible. To correct the date, pull the winding stem to the first step and rotate the date correcting wheel 3 in conjunction with the rotation of the winding stem. Next, the date correcting teeth 3b formed on the outer diameter are arranged so as to mesh with the teeth formed on the back surface of the date character printing portion of the date indicator, and the date correcting structure is formed by the winding stem rotating operation.

[Problems to be solved by the device]

According to the small size movement for women that does not have a day correction structure, the movement from the tip of the winding stem and the outer periphery of the move
Since the necessary members are arranged between 7a and 7a, the means for day correction is to pull the winding stem to the 3rd step and feed the day by adjusting the forward rotation needle, and then turn the needle backward from the day correction end position. It will be repeated for about 3 hours, and then it will be rotated forward again and forwarded by day. However, this means is troublesome, and when the winding stem is pulled out to the third stage, the movement of the timepiece stops, so that the time adjustment operation is required after the day correction.

[Means for solving the problem]

The present invention was conceived in order to solve the problem due to the lack of the day correction structure due to such a problem. In the women's size, it is difficult to arrange the day correction structure due to size restrictions, but in the men's size, the day correction wheel 3
A space for adding a day correction car is created on the outer periphery of the above, and the above problem can be solved.

〔Example〕

An embodiment of the present invention in which a day correction structure is added to a large diameter move for a gentleman will be described in detail below with reference to FIGS. 1, 2, and 3. Eye-correcting wheel 3 arranged on winding stem 14, claw wheel 4,
Up to the winding stem retainer 2 that is in pressure contact with the angled step portion 14a of the winding stem, the structure is the same as the conventional structure and the same operation is performed. 11 is a main plate. The plastic day correction wheel 9 arranged right above the winding has a wall of the main plate 11 and a wheel train bridge 10 with the outer central part having a small diameter part and one end having a large diameter part 9a.
It is positioned in the thrust direction with the wall. The other end forms the teeth 9b of the day correction wheel. This day correction wheel 9 is provided with a through hole, and a sandwiching portion 9c is formed in a part of this through hole. Further, a large diameter step portion 14c is provided on a part of a shaft portion of the winding stem 14 which is fitted with the day wheel, and is formed so as to mesh with the sandwiching portion 9c of the day correction wheel 9 when the winding stem is pulled to the second step. ing. The meshing at this time is such that the diameter of the winding true diameter large step portion 14c is larger than the hole diameter of the sandwiching portion 9c of the day correction wheel, so that the meshing becomes a crimping shape, and the day correction wheel is rotated by the winding true rotation operation. It will be possible. In the other 0th and 2nd steps of the winding stem, there is no meshing between the teeth 9b of the day correction wheel and the large diameter stepped portion 14c of the winding day, and the day correction wheel and winding stem are fitted with a clearance fit. The rotation of the modified car is not regulated by winding winding.

Next, the date indicator 13 has 31 teeth for normal date feeding or rotational positioning inside, and a tooth 13a that meshes with the date adjusting wheel 3 is formed on the main plate side surface of the date indicator. . The outer diameter of the day wheel is increased to around the maximum diameter of the movement, and the day wheel has a large diameter that covers the upper part of the day correction wheel. 12 is a day wheel, this day wheel 12
Has a guide hole and a day star wheel at the center of rotation and is formed to have a diameter larger than that of the date indicator.The outer diameter of the day plate on which the day of the week display is printed has crown teeth 12b formed outside the outer diameter of the date indicator. ing. This crown tooth 12b is the day correction tooth 9b of the day correction wheel on the outer periphery of the date wheel.
It is arranged to mesh with. Further, the day board is arranged so as to cover the upper surface of the date indicator, and 7 or 14 escape windows 12c are formed at equal intervals so that the date letters of the date indicator can be confirmed from the dial window. This escape window 12c shows the day of the week
Is printed inside.

Next, the operation will be described. FIG. 2 shows the state where the winding stem is pulled out to the first stage. At this time, the large diameter stepped portion 14b of the winding stem that guides the date correcting wheel 3 is press-fitted with the pinching portion 3a of the date correcting wheel 3. Similarly, the sandwiching portion of the through hole of the day correction wheel 9 is crimp-engaged with the large diameter stepped portion 14c of the winding stem, and the day correction wheel or the day wheel and day wheel that mesh with the day correction wheel are rotated by rotating the winding stem left and right. To do. However, since the correction direction of the date correction wheel is rotated only in one direction to the left or right, the tooth profile should be a lock tooth profile,
Alternatively, by shifting the resting position of the date wheel tooth 13a from the center of the winding true, the sun correction spring that positions the teeth of the date indicator wheel is adjusted by the unidirectional rotation with a difference in the feed amount of the date correction wheel. Restrict car rotation. The day wheel is also configured to rotate only in one direction opposite to the day wheel.

FIG. 3 shows a state in which the winding stem is pulled to the second stage. At this time, the large diameter stepped portion 14c of the winding stem passes through regardless of the meshing between the date correction wheel 3 and the pinching portion of the day correction wheel 4, and is continued to the large diameter stepped portion 14d provided at the tip of the winding stem hoso. It meshes with the pinching portion 4a of the through hole of the model wheel, and the needle is aligned.

[Effect of device]

As explained above, in the development of a small-diameter movement for women aimed at low cost, which is derived from the movement for men's day wheel and day wheel, the day correction structure has a small diameter size and space restrictions. When adding a large diameter model using a movement that could not be deployed, the original purpose can be achieved by simply increasing the number of parts by one, which greatly contributes to the omission of design or manufacturing equipment. is there.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a movement for men's movement of the present invention with a day / day wheel and a Sunday correction, a winding stem 0-stage state, and FIG. 2 is a portion showing a winding stem 1-stage pulling state of FIG. Cross section,
FIG. 3 is a partial cross-sectional view showing a state in which the winding stem is pulled in two stages in FIG. 1, and FIG. 4 is a partial cross-sectional view of a conventional movement size for women, including a date / day wheel and a date-corrected movement. 1,14 …… Mamaki 2 …… Mamane presser foot 3 …… Day correction wheel 4 …… Saddle wheel 5,13 …… Day wheel 6,12 …… Day wheel 7,11 …… Main plate 8,10 …… Wheel train 9 …… Day correction car 15 …… Dial plate

Claims (2)

[Scope of utility model registration request] 1. A winding stem (14) which is pivotally supported on a main plate (11) and can be switched to a plurality of positions, and a date wheel (13) and a day which are substantially concentrically rotatable with each other on the upper surface of the main plate (11). In a calendar timepiece having a car (12), a handwheel (4) is provided on an inner shaft portion of a winding stem (14) between a main plate (11) and a train wheel bridge (10).
, The date adjusting wheel (3) on the middle shaft, and the outer shaft on the
The day correction wheel (9) is rotatably supported, and the clutch wheel (4), the day correction wheel (3) and the day correction wheel (9) are respectively provided with a main plate (11) and a train wheel bridge (10). ), The day wheel (12) has a date display window (12c), and the crown teeth (12b) are provided on the outer circumference of the day wheel (13), which is larger than the outer diameter of the date wheel (13). The crown teeth (12b) constantly mesh with the teeth (9b) of the day correction wheel (9), and the teeth (13) of the date indicator (13).
(a) is a calendar clock characterized by always meshing with the date correction wheel (3). 2. The winding stem (14) and the clutch wheel (4), the date correction wheel (3) and the day correction wheel (9) each have a clearance at the 0th switching position of the winding wheel (14). Fits and fits the winding stem (14) at the 1st step of the switching position of the winding stem (14).
While the ratchet wheel (4) is fitted with a clearance fit, the date correction wheel (3) and the day correction wheel (9) are in a crimping engagement, and at the second position of the switching position of the winding stem (14). Maki Maki (14)
The utility model registration claim 1 characterized in that the clutch wheel (4) engages in a crimping shape, but the date corrector wheel (3) and the day corrector wheel (9) are fitted with a clearance fit. The listed calendar clock.