JPH02269531A - Movement assembly method for watch - Google Patents

Abstract

PURPOSE:To simplify a movement assembly line by performing a position-out with a supporting arm positioning tool after integrating a minite gear on a watch movement assembly line, and lubricating three slip faces. CONSTITUTION:A sleeve 4 has three projections 4 in the same shape of a minite gear supporting arm, and when a substrate 11 comes just under a rotary unit 1, it is detected by a detecting means, and the rotary unit 1 moves to the lower. At this state, the minite gear 10 is pressed down by both of a force of a spring 7 and a minite gear pressing pin with a spring 8. When the rotary unit 1 is rotated at 90 deg., the minite gear 10 is not rotated at first because a pressing force of the spring 8 is stronger than that of the spring 7, and only the projections 4 rotate with the unit 1. The minite gear 10 starts to rotate with the rotary unit 1 since the time that the projections 4 are pressed by the spring 7 to enter the minite gear 10. When the supporting arms of the minite gear 10 is positioned at a standing position of the rotary unit 1, the lower parts of the three supporting arms are lubricated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to lubricating the slip surfaces of timepiece components during the movement assembly process of a wristwatch.

[Summary of the invention]

In the movement assembly process of a wristwatch, the present invention positions the minute wheel, which is a timepiece part, on the movement and lubricates the slip surface at three points. This allows for oil lubrication. This lubrication is necessary because when turning the hands of the watch, the three points on the bottom of the minute wheel and the top of the cylindrical pinion slip.

[Conventional technology]

Conventionally, the amida positioning was performed on the dividing wheel supply device on the watch movement assembly line, and assembly was performed after lubricating the slip surfaces at three points.

[Problem to be solved by the invention]

The assembly method described above has the disadvantage that the separation wheel supply device on the wristwatch movement assembly line becomes complicated, and that the assembly jig is contaminated with oil because assembly is performed after oiling.

In addition, attempts have been made to position the center wheel of the split wheel on the center wheel supply device and lubricate the center wheel after assembly, but this has the disadvantage that the center position of the center wheel shifts during assembly and when meshing with other gears.

[Means to solve the problem]

In order to solve the above problems, in the present invention, after the minute wheel is assembled on the watch movement assembly line, positioning is performed by rotating an amino positioning jig having a protrusion similar to the shape of the minute wheel amino. At the lubrication station, it is now possible to lubricate three slip surfaces on the movement.

[Effect]

According to the above configuration, the minute wheel supply device in the watch movement assembly line can be made simple, and the assembly jig can be prevented from becoming contaminated with oil.

〔Example〕

Embodiments of the present invention will be described below based on the drawings. 1st
In the figure, a chuck body 3 is fixed to a rotating unit 1 of a wristwatch movement assembly line with screws 9 and pins 2. The sleeve 4 is connected to the chuck body 3 by a screw pin 7 and is pressed downward by a spring 7 provided between the sleeve 4 and the rotation unit 1. A minute wheel push pin 5 is inserted into the center hole of the sleeve 4, and is pressed downward by a spring 8 provided between the sleeve 4 and the rotation unit 1.

Is the minute wheel 10 a cylinder in advance?1. It is set on the main plate 11 in a sub-assembled state with Oa.

Next, its operation will be explained. As shown in FIG. 2, the sleeve 4 has three protrusions 4a having the same shape as the minute wheel amino shape. When the main plate 1 with the minute wheel 10 set thereon comes directly below the rotating unit, it is detected by a detection means (not shown) and the rotating unit 1 moves downward, as shown in FIG. At this time, the protrusion 4a of the sleeve 4 is on the minute wheel 10, and the force of the spring 7 presses the minute wheel 10 downward. Also,
Minute wheel push pin 5 also presses down minute wheel 10 by the force of spring 8.

When the rotating unit is rotated 90' from the state shown in FIG.
Since the pressing force is 200 g, the frictional resistance between the minute wheel 10 and the main plate 11 is large, so that the minute wheel 10 does not rotate and only the protrusion 4a of the sleeve 4 rotates together with the rotating unit 1.

The protrusion 4a of the sleeve 4 matches the amino shape of the minute wheel,
When the protrusion 4a enters the amino of the minute wheel 10 due to the force of the spring 7, the minute wheel 10 rotates together with the rotating unit 1, and the minute wheel 10 is positioned at the stop position of the rotating unit 1. . FIG. 4 shows this state. Minute car 10
Once the amino of
Lubricating is performed by step 2. This invention can be easily applied not only to minute wheels but also to other timepiece parts.

〔Effect of the invention〕

As explained above, this invention positions the minute wheel amino on the movement and makes it possible to lubricate the slip surface at three points, which simplifies the structure of the movement assembly line and makes adjustment operations easier. Since stable operation can be performed, it is possible to assemble with stable quality.

[Brief explanation of drawings]

FIG. 1 is a front sectional view showing the structure of a minute wheel amino positioning jig according to an embodiment of the present invention. FIG. 2 is a bottom view showing the shape of the minute wheel amino positioning projection of the present invention. FIGS. 3 and 4 are front sectional views showing the positioning operation of the present invention. FIG. 5 is a diagram showing the lubricating situation of the present invention. 1-... Rotating unit 2... Pin 3... Chuck body 4... Sleeve 4a... Protrusion 5... Minute wheel push pin 6... Screw pin 7. ... Spring 8 ... Spring 9 ... Screw 10 ... Minute wheel 10a ... Cylinder pinion 11 ... Main plate 12 ... Lubricator and above Diagram Q7 - Book Night light filter oil Fuyu Mei T map diagram

Claims (1)

[Claims] A method for assembling a watch movement, which comprises positioning a lubricating part of a watch part on the movement using a positioning jig or the like and lubricating the watch part in the watch movement assembly process.