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Drive device for a display element

A technology for driving devices and display elements, applied to mechanical devices for time indication, mechanically driven clocks, visually indicating time, etc., can solve the problem that it is difficult to clearly define the position of the tip of the cam profile

Pending Publication Date: 2020-07-14
ROLEX SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This is because in practice it is difficult to define unambiguously where, for example, the tip of the cam profile that triggers a date jump

Method used

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  • Drive device for a display element
  • Drive device for a display element
  • Drive device for a display element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Refer below Figure 1 to Figure 5 A first embodiment of the timepiece 400 will be described. The timepiece is, for example, a watch, in particular a wristwatch. The timepiece includes a timepiece movement 300 . The timepiece movement may be a mechanical movement, in particular an automatic movement. Alternatively, the timepiece movement may be electronic.

[0038] The movement may comprise a horological-calendar system 200 or a horological-calendar module 200 .

[0039] Movement 300 or timepiece-calendar system 200 or timepiece-calendar module 200 includes a drive device 100 for a display element 10 for displaying a time-related or derived quantity value.

[0040] The timepiece, the timepiece movement, the timepiece-calendar system 200 or the timepiece-calendar module 200 includes a display element 10 for displaying a quantity associated with or derived from time.

[0041] A quantity associated with or derived from time may include or in particular indicate a year,...

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PUM

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Abstract

The invention provides a drive device (100) for a display element (10) of a quantity value related to time or derived from time, comprising: - a cam (3) pivoted about a first axis (A3), designed to drive the movement of the display element (10), and comprising a top end (3b); - a rocker (4) pivoted around a second axis (A4), and - a spring (5) designed to return the rocker in contact against the cam. An angle (alpha) is formed, in a plane perpendicular to the first and second axes, between a straight line passing through the top point (3b), particularly through a contact point between the point (30b) furthest from the first axis (A3) and the rocker (4) and the first axis (A3), and a straight line passing through the first axis (A3) and the second axis (A4), the angle (alpha) being less than or equal to 70 degrees.

Description

technical field [0001] The invention relates to a driving device for a display element. The invention also relates to a calendar system or module comprising such a device. The invention also relates to a timepiece movement comprising such a device or such a system or such a module. Finally, the invention relates to a timepiece comprising such a device or such a system or such a module or such a movement. [0002] In particular, the invention relates to an actuation device for instantaneously changing a display from one magnitude associated with or derived from time, such as date or hour, to another magnitude. Background technique [0003] devices are known which generally have a drive member constituted by a finger fixed on a cam cooperating with an energy accumulator so as to enable this member to drive instantaneously at least by angular steps the set of teeth of the display member, The set of teeth is angularly indexed by the pawl. The accumulator is usually composed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B13/02G04B19/253
CPCG04B13/02G04B13/025G04B19/253G04B19/25G04B19/24
Inventor 克里斯蒂安·弗勒里
Owner ROLEX SA