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Timepiece movement

A technology of movement and timepiece, applied in the direction of movement size, time indicating mechanism, gear mechanism, etc.

Inactive Publication Date: 2006-04-12
ETA SA MFG HORLOGERE SUISSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage of this solution is that it requires the production of an additional part, usually a gasket, and the implementation of an additional step during assembly of the movement in order to install said gasket

Method used

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  • Timepiece movement
  • Timepiece movement
  • Timepiece movement

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] Referring to Fig. 2, the hour wheel 1 has a conventional structure. Three radial extensions 2 connect the wheel 3 to the minute pinion 4 . In the particular embodiment shown in FIG. 2 , it will be noted that there are three arms 5 , substantially in the shape of circular arcs, each extending from said radially extending portion 2 . These arms 5 have the function of adjusting the relative vertical positioning of the hour wheel 1 and of the minute pinion (not shown in this figure), thus allowing the omission of the foil springs normally used to ensure this function.

[0022] FIG. 2 also shows a specific feature of the hour wheel 1 , that is, the inner side of the minute pinion 4 includes an annular protrusion 6 .

[0023] image 3 This makes it easier to understand the advantages of said protrusion 6 since it is shown in its effective position, ie when the hour wheel 1 is arranged on the minute pinion 7 .

[0024] Partially visible in this figure is the movement timepie...

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PUM

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Abstract

The invention concerns the structure of a timepiece movement, more particularly the structure of the hour wheel (1), the inside of whose pipe (4) includes an annular bulge (6) co-operating with an annular groove (22) arranged on the outer wall of the pipe (21) of the cannon-pinion (7). Thus, the hour wheel is snap-fitted onto the movement, without it being necessary to provide an additional part for this purpose, and its toothed wheel (3) cannot therefore be released from the motion-work pinion (19) during transport of the movement.

Description

technical field [0001] The invention relates to a timepiece movement comprising: a bridge; display means with hands; a train of wheels connecting drive means to said hands, said train of wheels comprising at least one drive wheel meshing indirectly with said drive means and Fixed to the minute pinion pivoted by a column mounted in the wheel tie bar; the hour wheel, arranged around the minute pinion and sitting on a bridge, the drive wheel and the hour wheel respectively on the two sides of said bridge side extension. Background technique [0002] Timepiece movements of this type are common and have been known for a long time. However, it should be noted that the movements of the prior art have certain deficiencies which the present invention overcomes. [0003] FIG. 1 schematically shows a part of a movement with a central seconds wheel disclosed in the prior art. Figure 1 shows the relative position of the time display wheel device. In particular, the seconds wheel devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04B33/10G04B33/08G04B19/02G04B1/02G04B13/02G04B29/04G04B41/00
CPCG04B13/02G04B29/04G04B1/02
Inventor M·贝特利尼T·舍宁贝格
Owner ETA SA MFG HORLOGERE SUISSE
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