JPH0733191Y2 - Clock switching mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a timepiece switching mechanism.

[Outline of device]

The present invention is directed to a timepiece switching mechanism that has a winding stem, a rod, a wheel and a clutch wheel, and positions the winding stem and the clutch wheel in a plurality of stages. Two needles or three needles etc. for positioning the clutch wheel in two stages by integrally forming the first engaging portion and the second engaging portion that engages only when the mountain portion of the bar is disengaged Of a straight watch, and by removing the second engaging part of the rod, a switching mechanism for positioning the clutch wheel in three stages, such as a calendar clock that also serves as a wheel, winding stem, and clutch wheel, is realized. To do.

[Conventional technology]

3 to 5 show a conventional mechanism for switching a timepiece with a calendar having a winding stem, a doll, a wheel and a wheel. FIG. 3 shows the positional relationship of each element in the normal hand movement state in which the winding stem 1 is not pulled out. The lever 2 is positioned by the winding stem 1, the engaging portion 2a of the lever 2 and the chevron portion 3a of the bolt 3 are engaged, the pin 3 is positioned, and the clutch wheel 4 positioned by the pin 3 is The transmission wheel 5 for turning the needle and the calendar correction wheel 6 do not engage with each other, and the correction operation is not performed even if the handwheel 4 rotates due to the rotation of the winding stem 1. FIG. 4 shows the positional relationship of each element in the calendar correction state in which the winding stem 1 is pulled out by one step. The temple 2 is positioned by engaging the winding stem 1. The boot 3 is positioned by the engagement between the engaging portion 2a of the posterity 2 and the chevron portion 3b of the boot 3. The clutch wheel 4 is engaged with the collar 3 and positioned, and meshes with the calendar correction wheel 6. By rotating the winding stem 1, the ratchet wheel 4 that engages with the winding stem 1 and is positioned only in the rotational direction rotates, and the calendar correction wheel 6 also rotates, so that calendar correction can be performed. FIG. 5 shows the positional relationship of each element in the time correction state in which the winding stem 1 is pulled out in two stages. The temple 2 is positioned by engaging the winding stem 1. The bolt 3 is positioned by the engagement between the engaging portion 2a of the posterity 2 and the chevron portion 3c of the bolt 3. The clutch wheel 4 is engaged with the pin 3 to be positioned, and meshes with the transmission wheel 5 for rotating the needle. When the winding stem 1 is rotated, the ratchet wheel 4 that engages with the winding stem 1 and is positioned only in the rotational direction rotates, and the transmission wheel 5 for rotating the needle that meshes with the ratchet wheel 4 also rotates. The time can be adjusted.

Next, FIGS. 6 to 9 show a switching mechanism of a straight timepiece based on the switching mechanism of the calendar timepiece. The mechanism shown in FIG. 6 is a mechanism in which the calendar correction wheel 6 shown in FIG. 3 is removed, and includes a winding stem 1, an oscillating needle 2, a bolt 3, and a clutch wheel 4.
Is also used. Further, by pulling out the winding stem 1 in two stages, the time can be adjusted in the same manner as the state shown in FIG. In the mechanism shown in FIG. 7, the winding stem 1 is changed to a mountain-shaped changing portion 3e, which is a shaded portion in the drawing, of the mountain-shaped portion of the lantern 3.
It is a mechanism that has been staged.

By pulling out the winding stem one step further, the time can be adjusted in the same manner as the state shown in FIG. The mechanism shown in FIG. 8 is
With the mechanism in which the engaging portion of the winding stem 1 with the rod 2 is changed, the winding stem 2, pull-out wheel 3, clutch wheel 4 without pulling out the winding stem.
The position of is similar to the state in which the winding stem 1 of the calendar timepiece shown in FIG. Therefore, by pulling out the winding stem 1 one step in FIG. 8, the state becomes the same as that shown in FIG. 5, and the time can be adjusted. The mechanism shown in FIG. 9 is a mechanism in which the engaging position of the posterity 2 and the bolt 3 is changed by changing the engaging portion of the posterity 2 with the winding stem 1, and when the winding stem 1 is not pulled out, The engaging portion 2a of the lever 2 positioned by the winding stem 1 engages with the chevron portion 3b of the bolt 3. The positions of the dial 3 and the clutch wheel 4 in this state are the same as the state where the winding stem 1 of the calendar timepiece shown in FIG. Therefore, by pulling out the winding stem 1 one step in FIG. 9, the state becomes the same as that shown in FIG. 5, and the time can be adjusted.

[Problems to be solved by the device]

However, in the switching mechanism for the straight timepiece based on the conventional switching mechanism for the calendar timepiece, as shown above, in the case of the mechanism shown in FIG. 6, all parts can be used in common.
Since the winding stem has to be pulled out in two stages, the user feels a click on the Yamagata twice, which makes the operation feel uncomfortable. In the case of the mechanism shown in FIG. 7, it is necessary to change the hatched portion of the bar 3 to form the chevron changing portion 3e, which is difficult to process and the press die must be changed in consideration of mass productivity. Become.

In the case of the mechanism shown in FIG. 8, since the winding stem 1 is a new part and the initial position is the state where the winding stem of the timepiece with calendar is pulled out by one step, the switching height 7 is large and the switching weight is large. The mechanism shown in FIG. 9 has a switching height of 7 as in the mechanism shown in FIG.
Is large, the switching weight is also large. Therefore, an object of the present invention is to increase the dual use of parts in the switching mechanism of the calendar timepiece and the switching mechanism when straight.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the present invention provides two engaging portions with a bolt for a temple positioned by a winding stem. The first engaging portion of the shidori engages with the chevron portion of the bolt when the winding stem is not pulled out, and when the winding stem is pulled out one step, the chevron portion of the bolt is the first portion of the rod.
The engagement with the engaging portion is released, and the second engaging portion of the post engages with the chevron-shaped portion other than the above-mentioned mountain-shaped portion. With such a structure, a straight timepiece and a timepiece with a calendar can be realized while enhancing the versatility, and the size of the straight timepiece can be reduced.

[Action]

In the switching mechanism for the thumb rod and the bolt configured as described above, the thumb rod is engaged with the winding stem and positioned when the winding stem is not pulled out. The boot is positioned by the engagement of the first engaging portion of the post and the chevron portion of the boot. The clutch wheel is positioned by engagement with the dial, and in this state, the clutch wheel does not mesh with the transmission wheel for rotating the needle and the correction operation is not performed by the rotation of the winding stem. In the state where the winding stem is pulled out by one step, the posterior engages with the winding stem and is positioned. The first engaging portion of the lever is disengaged from the chevron portion of the bolt, and the ratchet is positioned by the engagement of the second engaging portion of the dog and another chevron portion of the bolt. The clutch wheel is positioned by engagement with the dial, and in this state, meshes with the transmission wheel for rotating the needle. By rotating the winding stem, the clutch wheel incorporated in the winding true angle portion is rotated integrally with the winding stem, the transmission wheel for rotating the needle is also rotated, and the time can be adjusted.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 10, 10, and 12. FIG. 1 shows a normal hand movement state in which the winding stem 1 is not pulled out. The winding stem 1 is rotatably and axially operably supported by a winding stem hole 8a formed in the main plate 8 in a cross section. The temple 2 has a rotation center shaft 8b provided on the plane of the main plate 8 and a rotation center hole 2d of the temple 2.
Is rotatably assembled. The winding stem 1 is engaged and positioned by the third engaging portion 2c of the lever 2. The bolt 3 is a rotation center axis provided on the plane of the main plate 8.
It is assembled rotatably by the rotation center hole 3d of the bolt 3 in 8c. Further, the first engaging portion 2a of the temple 2 and the chevron portion 3a of the bar 3 are engaged and positioned. The spring portion 3f of the bolt 3 is engaged with the wall 8d provided on the plane of the main plate 8, and the bolt 3 is pressed against the rod engaging portion with the rotation center hole 3d as the rotation center. The clutch wheel 4 is positioned by engaging with the first engaging portion 3d of the yoke 3. At this time, the hand wheel 4 does not mesh with the transmission wheel 5 for turning the needle. FIG. 2 is a view showing a state in which the winding stem is pulled out one step from the state shown in FIG. Oshidori 2 is a winding stem 1 as in FIG.
Positioned by At this time, the first engaging portion 2a of the poster 2 is disengaged from the bolt 3. The door 3 is positioned by the engagement of the second engaging portion 2b of the lantern 2 and the chevron portion 3c of the door 3. Therefore, the hand wheel 5 moves and meshes with the transmission wheel 5 for turning the needle. At this time, by rotating the winding stem 1, the ratchet wheel 4 positioned in the rotational direction by the winding stem 1 is rotated, and the transmission wheel 5 for rotating the needle which meshes with the ratchet wheel 4 is also rotated. The time can be adjusted. Further, as shown in FIG. 10, by removing the hatched portion of the posterior 2 and the second engaging portion 2b, the third
It is structurally similar to the calendar timepiece shown in FIGS. 4, 5 and 5. That is, in the normal hand movement state in which the winding stem 1 is not pulled out, the lever 2 is engaged with the winding stem 1 and positioned. The door 3 is positioned by the engagement of the first engaging portion 2a of the lever 2 and the chevron portion 3a of the door 3. The clutch wheel 4 is positioned by engaging with the wheel 3 and, in this state, the clutch wheel 4 is different from the transmission wheel 5 in the calendar correction wheel 6
It is in a free state without engaging with them. When the winding stem is pulled out one step, the calendar correction state is set, and the lever 2 is engaged with the winding stem 1 and positioned. The door 3 is positioned by the engagement between the first engaging portion 2a of the lever 2 and the chevron portion 3b of the door 3. The clutch wheel 4 is engaged with the dial 3 and positioned, and in this state, the clutch wheel 4 meshes with the calendar correction wheel 6. By rotating the winding stem 1,
The handwheel 4 positioned in the direction of rotation by the winding stem 1 is also rotated, and the calendar correction wheel 6 meshing with the handwheel 4 is also rotated so that calendar correction can be performed. When the winding stem is pulled out by two steps, the time is adjusted, and the temple 2 is engaged with the winding stem 1 and positioned. Kanuki 3 is the first of Shiori 2
It is positioned by the engagement between the engaging portion 2a and the chevron portion 3c. The clutch wheel 4 is engaged with the pin 3 and positioned, and in this state, the clutch wheel 4 meshes with the transmission wheel 5 for turning the needle. When the winding stem 1 is rotated, the ratchet wheel 4 that rotates integrally with the winding stem is also rotated by the winding stem 1, and the transmission wheel 5 for rotating the needle which meshes with the ratchet wheel 4.
Is also rotated and the time can be adjusted.

11 and 12 show another embodiment of the present invention. Figure 1,
Similar to the mechanism shown in FIG. 2, the difference lies in the shape of the rod 2 at the engaging portion of the rod 2 and the bolt 3. This figure shows the first engaging portion 2a of the oshidori that engages with the boot 2.
FIG. 6 is a diagram in which protrusions are formed on the second engaging portion 2b and the second engaging portion 2b in the thickness direction of the temple. FIG. 12 is a sectional view of the structure shown in FIG. 11, but three types of structures (A), (B) and (C) are conceivable. FIG. 12 (A) shows a product in which a material is compressed in the plate thickness direction to form a protrusion. FIG. 12 (B) shows an article in which the projection is formed by providing a shape substantially similar to the projection on the side opposite to the projection in the direction in which the plate thickness becomes thinner. FIG. 12 (C) shows an article in which a projection is formed by driving a pin or the like having a required shape into the projection in a ditch. In the figure, the positional relationship between the cross-section of the shishidori and the cross-bar may be either upper or lower.

The two engaging parts are shown in Fig. 12 (A),
The same effect can be obtained with any combination of (B) and (C). Further, if the second engaging portion of the guard 2 is not formed, it becomes the switching mechanism of the calendar timepiece as in FIG.

[Effect of device]

As described above, according to the present invention, by providing the two engaging portions in the engagement between the oshiri and the bolt, the switching weight is small and the durability including friction is improved, so that a stable operation feeling of the winding stem is obtained. The resulting straight watch can be realized.
Further, the second engaging portion of the oshidori can be deleted by a simple additional process or a simple change in the manufacturing process. In that case, a watch with a calendar can be easily used by combining the winding stem, the wheel and the handwheel. It has a great effect that it can be realized.

[Brief description of drawings]

FIGS. 1 and 2 are plan views of the present invention, FIGS. 3, 4, and 5 are plan views of a switching portion of a timepiece with calendar, FIGS. 6, and 7.
FIG. 8, FIG. 8 and FIG. 9 are plan views of a switching portion of a conventional straight timepiece, and FIGS. 10, 11, and 12 are a plan view and a sectional view showing another embodiment of the present invention. 1 …… Mamaki 2 …… Oshidori 2a …… First engaging part 2b …… Second engaging part 3 …… Kanuki 3a …… Yamagata part 3b …… Yamagata part 3c …… Yamagata part 4 …… Crushing wheel

Claims (1)

[Scope of utility model registration request] 1. A switching mechanism for a timepiece having a winding stem, a rod, a wheel and a wheel and a plurality of steps for positioning the winding wheel and the wheel, and a first engaging portion which engages with the wheel and the mechanism. A timepiece switching mechanism in which a first engaging portion and a second engaging portion that engages with the bolt only when the chevron portion of the bolt are disengaged are integrally formed on the rod.