JPH0430495U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the switching mechanism showing one embodiment of the present invention when the clock is in the hand movement state;
FIG. 3 is a cross-sectional view of the switching mechanism shown in the figure when the watch is in the pointer adjustment state; FIG.
The figure is a cross-sectional view of the switching mechanism shown in Figure 3 when the watch is in the pointer adjustment state, and Figure 5 is a cross-sectional view of the switching mechanism showing still another embodiment of the present invention when the watch is in the hand-moving state. Fig. 6 is a sectional view of the switching mechanism shown in Fig. 5 when the watch is in the pointer correction state, Fig. 7 is a sectional view of the switching mechanism showing an example of the conventional technology, and Fig. 8 is a cross-sectional view of the switching mechanism shown in Fig. 7. FIG. 3 is a cross-sectional view showing the state in which the crown wheel escapes when the toothed portion 21 interferes with the toothed portion 14 of the winding stem. 110, 10... Volume stem, 111, 11... Tsuba A
, 112, 12... Tsuba B, 113, 13... Tsuba C
, 114, 14... Teeth portion of the winding stem, 15... Large diameter portion of the winding stem, 120, 20a... Crown wheel, 121
, 21a... Teeth of the crown wheel, 20... Pointer correction intermediate wheel, 21... Teeth of the pointer correction intermediate portion, 22
...Outer convex portion, 23... Recessed portion, 24... Inner convex portion, 25... Pinus, 26... Pinus tooth portion, 27...
Upper tenon, 28...Lower tenon, 29...Shaft, 30...
Winding stem position regulation lever, 31... Spring, 32... Hour wheel, 33... Teeth of hour wheel, 34... Pinion of power transmission wheel, 41... Lower receiving plate, 42... Upper receiving plate.

Claims (1)

[Claims for Utility Model Registration] (1) In a switching mechanism that sets the watch to the hand movement or pointer correction state by operating the winding stem,
A winding stem having a pointer correction intermediate wheel having teeth and movable in the axial direction, a spring for returning the pointer correction intermediate wheel to a position before movement, and a gear meshing with the teeth of the pointer correction intermediate wheel. A clock switching mechanism characterized by comprising: (2) In a switching mechanism that sets the watch to the hand movement or pointer correction state by operating the winding stem,
A pointer correction intermediate wheel or a member fixed to the pointer correction intermediate wheel is provided with a protrusion and a recess, the pointer correction intermediate wheel is movable in the axial direction, and a spring is provided for returning the pointer correction intermediate wheel to the position before movement. and when the large diameter portion provided on the winding stem comes into contact with the convex portion by operating the winding stem, the pointer correction intermediate wheel is moved away from the winding stem by the operating force of the winding stem. 2. A switching mechanism for a timepiece, characterized in that when the large-diameter portion of the winding stem reaches a concave portion, the intermediate pointer correction wheel and the winding stem engage with each other due to the return force of a spring. (3) A switching mechanism for a timepiece, wherein the convex portion according to claim 1 is a lower tenon of a pointer correction intermediate wheel. (4) The switching mechanism for a timepiece according to item 1, wherein the intermediate wheel for point correction in the switching mechanism is a spur gear, a bevel gear, or a crown gear. (5) The timepiece according to paragraph 1, wherein in the switching mechanism, the pointer correction intermediate wheel is a wheel that is fixed coaxially with the wheel of the sun, or a wheel that meshes with the wheel of the sun. Switching mechanism.