JPS606776Y2 - Detachable correction axis mechanism for watches, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a correction shaft mechanism in which the correction shaft is detachable in a watch in which a correction pinion is built into the movement.

In the past, the correction shaft and correction pinion were connected by press-fitting or the like and could not be attached or detached, or could not be attached or detached without disassembling the movement.

Further, if the reset cone is removed or dropped, it is impossible to return to zero and the lever cannot be put into a standby state.

The present invention has been devised in view of these points, and its contents will be explained below based on the illustrated embodiments (FIGS. 1 and 2).

Reference numeral 1 denotes a correction mechanism main body having a correction pinion portion 2, a cone portion 3, and a boss portion 4, and the correction mechanism main body 1 and correction shaft 5 are constructed as separate bodies so as to be separable.

Reference numeral 6 denotes a through hole bored in the main body 1 of the correction mechanism, into which the correction shaft 5 is removably inserted.

7 is a flat washer, and 8 is an E-type retaining ring, which fixes the correction mechanism main body 1 and the correction shaft 5 integrally.

Reference numeral 9 denotes a base plate, and the bearing has a space 10 and has a protrusion 11 formed thereon, and the protrusion 11 is shaped so as to fit into the recess 12 of the cone part 3 in the main body 1 of the correction mechanism. It is.

Reference numeral 13 denotes a spring wound around the boss portion 4 of the correction mechanism main body 1, and the bearing is interposed between the space 10 of the projection 11 and the flat washer 7.

Due to the contraction elasticity of the spring 13, the correction shaft 5 and the correction mechanism main body 1 integrated therewith are drawn in the direction of arrow A.

Reference numeral 14 denotes another main plate which is disposed opposite to the main plate 9, and the distance between the main plate 9 and the main plate 14 is such that when the correction mechanism main body 1 is pulled out in the direction of arrow B, the boss portion 4 and the bearing are located at the protrusion 11. The decision was made with consideration to avoid falling into the trap.

That is, as shown in FIG. 2, when the modified pinion part 2 collides with the base plate 14, the bearing of the boss part 4 and the bearing of the protrusion 11 are prevented from coming out from the hole 15.

Reference numeral 16 designates a through hole for the correction shaft 5 bored in the base plate 14.

Next, the manner of use of the mechanism of the present invention having the above configuration will be explained.

When adjusting the time, when the correction shaft 5 is pulled in the direction of arrow C against the elastic force of the spring 13, the correction mechanism main body 1 is also moved in the same direction, and the correction pinion part 2 is moved to the correction position 1. Kana (
(not shown).

Next, when replacing the correction shaft 5 with another correction shaft, such as a longer or shorter one, remove the E-type retaining ring 8 and flat washer 7 and pull out the correction shaft 5 in the direction of arrow C.
As shown in the figure, the correction pinion part 2 hits the base plate 14 and stops, and at the same time the boss part 4 and the bearing remain in the space 10 of the protrusion 11.

Therefore, the present invention has the structure and operation as described above, and in particular, the bearing of the bearing protrusion 11 with the boss portion 4 protruding from the base plate 9 is loosely fitted into the hole 15, and the bearing is provided with a protrusion. Part 11
Even when the correction shaft 5 is removed from the correction mechanism main body 1, the boss portion 4 is forced to be supported in the bearing hole 15, so that the correction mechanism main body 1 is not attached to the main plate. It is possible to maintain the engagement between the correction pinion part 2 and other gears without applying lateral pressure without worrying about lateral vibration, eccentricity, or falling off, and under the same conditions as when the correction shaft 5 is attached, without applying lateral pressure. , the correction shaft 5 is inserted and fitted into the through hole 6 of the correction mechanism main body 1, and the flat washer 7, E-type retaining ring 8, etc. are removably attached using members, so the correction shaft 5 is removed from the correction mechanism main body 1. In addition, there are advantages in that the correction shaft 5 can be smoothly attached and detached without applying excessive force to the correction mechanism main body 1, the boss portion 4, etc. during attachment, and without causing bending deformation or the like.

[Brief explanation of the drawing]

Figures 1 and 2 are cross-sectional views of essential parts showing an embodiment of the present invention, with Figure 1 showing the state before removing the correction shaft, and Figure 2 showing the state before removing the correction shaft.
The figure shows the state after the correction shaft has been removed. 1... Correction mechanism body, 2... Correction corner part, 3... Cone part, 4... Boss part,
5...Correction axis, 9°14...Main plate, 1
5...The bearing is a hole.

Claims (1)

[Scope of utility model registration request] A correction mechanism main body 1 consisting of a correction pinion part 2, a cone part 3, and a boss part 4 and a correction shaft 5 are formed separately, and the correction shaft 5 is inserted and fitted into a through hole 6 of the correction mechanism main body 1. The mating flat washer 7 and the E-type retaining ring 8 are attached removably using members, and the bearing with the boss 4 protruding from the base plate 9 has the bearing of the protrusion 11 loosely fitted into the hole 15 and the bearing. Projection 11
A removable correction shaft mechanism for a watch or the like, in which the boss portion 4 is supported within the hole 15 even when the correction shaft 5 is removed.