KR940002272Y1 - Switching structure of timepiece - Google Patents

Abstract

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Description

Watch switching structure

1 is a plan view of a typical portable state showing an embodiment of the present invention.

Figure 2 is a plan view of the weekday modification state showing an embodiment of the present invention.

3 is a plan view of a visual correction state showing an embodiment of the present invention.

4 and 5 are cross-sectional views of main parts of FIG.

* Explanation of symbols for main parts of the drawings

1 substrate 2 winding core

3: sliding pinion 4: the first calendar modified conveying wheel

5: setting lever 6: clutch plate

7: 3rd wheel 8: gear train receiving

9: setting wheel

The present invention relates to a watch structure for the normal portable state, day of the week correction state and time correction state of the watch.

The switching structure in the structure of a conventional watch moves a sliding pinion by a setting lever interlocked with an external operating member, and a yoke coupled with the setting lever, and is used to correct the time of the setting wheel or minute hand wheel. Screwed with the gear train member, and in the case of oil correction, it is screwed with the calendar correction transmission wheel to enable each correction.

According to the structure of the conventional clock, the sliding pinion is moved by the yoke to engage with the gear train member on one wheel side of the sliding pinion and correct the time. On the other side of the wheel, the structure of the sliding pinion is particularly complicated and expensive to combine with the calendar correction delivery wheel and to perform oil correction. Moreover, the price will not fall unless the products such as iokes are removed to move the sliding pinion.

Therefore, the present invention aims to provide an inexpensive timepiece by eliminating the conventional switching components such as yoke and simplifying the structure of the sliding pinion in order to solve such problems in the related art.

In order to solve the above problems, the switching structure of the clock of the present invention has a sliding pinion and a first calendar-corrected transmission wheel, which are combined only in a part of the external operation member and the time correction and day correction state, respectively, and loosely coupled at other times. Characterized in that.

An embodiment of the present invention is described below with reference to the drawings. FIG. 1 is a plan view in a normal portable state of the present invention, FIG. 2 is a plan view in a day correction state, and FIG. 3 is a plan view in a time correction state, and FIGS. 4 and 5 are cross-sectional views of main parts thereof. Illustrated.

In Fig. 1, Fig. 4 and Fig. 5 showing a particularly portable state, Fig. 1 shows a substrate as the base of a watch and a winding stem as an external operation member. 3 is a sliding pinion of plastic material, which is normally coupled to the core and 4 is a first calendered crystal transfer wheel of the same loose coupling and plastic material. The core 2 usually has a recess 2a loosely coupled with the sliding pinion 3 when carrying, a recess 2b loosely coupled with the first calendered correction transmission wheel 4, and is modified at the time of day correction. 1 The lug portion 2c which frictionally engages with the calendar correction transmission wheel 4, and the lug portion 2d which frictionally engages with the sliding pinion 3 and corrects the position by the setting lever 5 at the time of time correction. Has (2e)

6 is guided by the shaft 1a provided in the board | substrate as a clutch plate, and has made the shaft 1a the rotation center. The clutch plate 6 has a joining click portion 6a in contact with the setting lever 5 which is the above-mentioned switching constituent member, and the setting lever 5 in the operation of pulling and pushing the winding core 2. The positioning and operating force of the core 2 are determined by the form of the said click part 6a via the following. In addition, the clutch plate 6 has an elastic portion 6b having a counterclockwise force with the shaft 1a as the rotation center. 6c is a gear train guide support hole, and guides and supports the lower pivot shaft 7c of the third wheel 7. The third wheel 7 is made of a plastic material in which the gears 7a and 7b are integrally formed, and the contact portion 6d abuts against the substrate protrusion 1b near the gear train guide support hole 6c of the clutch plate 6. ), The gear train meshing distance between the second wheel and the third wheel is determined.

8 is a plastic integrally formed gear train receiver and supports each wheel. 9 is a setting wheel formed integrally with a plastic, and is supported with the guide shaft 8a provided in the gear train support 8 as the rotation center, and is always engaged with the teeth 3a of the slide pinion 3. That is, the sliding pinion 3 is driven by the setting wheel 9 even in the normal portable state, and rotates the winding core 2 about the axis. The gear train receiver 8 is provided at the lower part of the guide shaft 8a of the setting wheel 9 for guiding the convex portion of the tip portion 2f of the core 2 and sandwiching it with the receiver 1c of the substrate 1. By guiding the core, the degree of looseness of the clutch plate 6 is determined by the step H of the substrate 1. In addition, the setting wheel 9 determines the degree of looseness by pressing the upper surface of the guide shaft 8a of the gear train receiver 8 with the pressing plate 10. In addition, the presser plate 10 has the setting lever spring part 10a, and presses down the setting lever 5. 11 denotes a circuit board, and 12 denotes a minute hand wheel engaged with the setting wheel 9. 13 is the second wheel, 14 is the fourth wheel, and the guide wheel is attached to the minute and second hands, respectively. 15 is the center pipe, 16 is the hour hand wheel, and 17 is the second calendar crystal delivery wheel. 18 is a stator which is close to the third wheel lower hole 17c and determines the degree of looseness of the clutch plate, and is a component of a known clock motor.

In the normal portable state, the sliding pinion 3 and the first calendered correction transmission wheel 4 are positioned at a certain loose range in the wall of the substrate and the gear train receiver, respectively, and are loosely fitted at the shoulders of the core 2. lost. The clutch plate 6 makes contact with the substrate projection 1b firmly by contacting the contact portion 6d by engaging the spring-shaped click portion 6a and the setting lever 5, and the second gear 13a and the first gear 13a. 3 gears 7b are maintained at the proper center distance. In addition, the gear train and the switching unit perform a known movement.

Next, it demonstrates centering on FIG. 2 in the weekday correction state. Normally, by pulling the core 2 out of the carrying state, the setting lever 5 is rotated from the engagement of the recess setting lever 5 of the core 2e, and within the shape of the click portion 6a of the clutch plate 6. The setting lever 5 and the winding core 2 are positioned at the first switching step position at a position over one mountain. At this time, the contact portion 6d of the clutch plate is brought into contact with the substrate projection 1b and is held at the proper center distance between the second gear 13a and the third gear 7b.

Moreover, the core 2 is frictionally engaged with the core 2c in the first switching step position so far that the first calender correction transmission wheel 4 which has been loosely fitted and free with the core 2c is so far. And the rotation of the core 2 by the rotation operation from the outside is transmitted to the 1st calendar correction transmission wheel 4 and the 2nd calendar correction transmission wheel 17 as it is, and correct | amends a day by the well-known day correction structure previously Will be performed. In addition, the sliding pinion is loosely fitted with the core portion 2a as in the case of normal carrying, and is kept free.

Next, the time correction state will be described with reference to FIG. 3. The setting lever 5 rotates to the above-mentioned shape by taking out the further winding core 2 from the first switching step, and the place in the shape of the click portion 6a of the clutch plate 6 exceeds one more mountain. The setting lever 5 and the winding core 2 are positioned at the second switching step position. At this time, the clutch plate 6 is freely engaged with the click portion 6a and the setting lever 5, and rotates clockwise due to the reaction force of the elastic portion 6b with the substrate projection 1a as the rotation center. The contact portion 6d, which maintains the proper engagement center distance until the switching step, displaces the substrate protrusion 1b, moves the gear train guide support hole 6c, and engages the second gear 13a with the third gear 7b. Release it. Further, the core 2 is in the second switching step position so that the sliding pinion 3, which has been loosely fitted and free of the core core 2a so far, frictionally engages the core core 2d. Then, by rotating from the outside, the rotation of the core 2 is transmitted to the sliding pinion 3 as it is, and the second wheel, which is the hour hand instruction wheel, seen through the setting wheel 9 and the minute hand wheel 12 ( 13) and hour hand wheel 16 is rotated and time corrected. On the other hand, with respect to the first calendar correcting transmission wheel, the core portion 2c frictionally engaged in the first switching stage at the position of the second switching stage is displaced, and the core portion 2a is loosened and freed, and the core 2 is loosened. At the same time, it is rotated and the structure is not modified. Moreover, the reset is performed by combining the protrusion 5c provided in the setting lever 5 and the reset pattern 11a.

As described above, in the correction of the time, it is not necessary to equip the gear train with a sliding mechanism by releasing the engagement between the second wheel and the third wheel, and there is no rotation torque load at the time of correction. For this purpose, the gear train, in particular, the gear train member of the time-correcting structure, in order to secure the strength, plasticizes the entire gear train member by adopting the clock structure by the metal construction, simplifying the manufacturing process and low-cost parts. It is to promote.

Furthermore, the flexible switching structure is realized by forming the click portion integrally with the clutch plate. Thus, in correcting the time of the second switching step, the setting lever affects the other switching components by pressing the recess 5b of the setting lever rear portion in this state to release the engagement with the clutch plate click portion and to become free. Desorption of the core is possible without affecting. In addition, the clutch plate is coupled to the click spring portion with the switching member to generate the core operating force, and to support and guide a part of the gear train member, and to remove the engagement of a part of the gear train when correcting the time of the watch. Visual correction can be performed under no load and plasticization of the gear train members can be achieved by them. As a result, it is possible to provide a low cost watch body.

Although the example of frictional engagement is shown in each modification of the sliding pinion and the first calender modified transmission wheel with respect to the above embodiment, the combination of the sliding pinion and the first calender modified transmission wheel with the rectangular hole and the angle cutting winding It is also possible to implement. Moreover, although the example comprised integrally from the gear train receiving as an axis of a setting wheel is shown, the sweep second clock hand of a gear train is also possible. Moreover, although the structure which attaches and detaches a 3rd wheel lower pivot by a setting lever and a clutch plate is shown, it is also possible by the correction method by providing an elastic part in the gear of a 2nd wheel, and sliding structure.

Although the third wheel lower pivot is operated to perform detachment, the gear train may be detached by operating the upper and lower pivots simultaneously or only the upper pivot. Moreover, although the example comprised integrally from the gear train receiving as an axis of a setting wheel is shown, the sweep 2nd clock hand of a gear train is also possible.

As described above, in the structure of the watch, the present invention combines the sliding pinion and the first calendar correction transmission wheel only in the winding core, which is an external operation member, and in the time correction and day correction state, respectively, and freely in other states. The loose fit allows the correction of day of the week and the correction of the time with little use of components for switching, as well as the plasticization of switching gear train members such as sliding pinions and first calendered correction transmission wheels into simple shapes. As a result, it is possible to provide an inexpensive watch body and the effect is very large.

Claims (4)

In a switching structure of a clock consisting of an external operation member, a sliding pinion guided around the external operation member, and a first calendar correction transmission wheel, the sliding pinion and the first calendar correction transmission wheel are generally external when carrying. It is also loosely fitted to both the operation member and both, when changing the day of the week, the switching structure of the watch, characterized in that only the first portion of the external calendar and the first calendar correction transmission wheel is coupled and rotatable in conjunction with the external operation member. The method of claim 1, wherein when correcting the time, the first calendar correction transmission wheel is coupled to the external operation member again, and only the sliding pinion is coupled to the convex portion of the external operation member, externally coupled, and rotatable in conjunction with the external operation member. Switching structure of clock characterized by. The setting wheel and the sliding pinion according to claim 1 or 2, further comprising a second wheel for transmitting power to a driving source, a minute hand wheel engaged with the second wheel, and a setting wheel engaged with the minute hand wheel. And the switching structure of the watch, characterized in that it is always engaged even in the portable state. 2. The watch switching structure according to claim 1, wherein the sliding pinion, the setting wheel, and the first calender modified transmission wheel are all made of plastics.