3D Karussel Carriage Layout for Independent Escapement Drive
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Solution Overview
Problem
Existing three-dimensional tourbillons are not adaptable to karussels due to the specific configuration and operation of karussels, particularly the parallel actuation of the carriage and escapement mechanism, leading to a lack of a functional three-dimensional karussel.
Innovation Solution
A three-dimensional karussel design featuring an inner and outer carriage, where the inner carriage rotates about a first axis and the outer carriage rotates about a second axis, with drive means actuating both carriages and the escapement mechanism in parallel, using a seconds driving crown and carriage driving wheel set to transmit torque independently to each component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a three-dimensional tourbillon configuration is used, then precision in relation to gravity is improved, but the configuration is not adaptable to karussels due to parallel actuation requirements
Solution Approach 1:
The drive means are segmented into three independent torque transmission paths: a first part transmits torque to the outer carriage for rotation about the second axis, a second part transmits torque to the inner carriage for rotation about the first axis, and a third part transmits torque to the escapement mechanism. This segmentation enables parallel actuation of all three components, making the three-dimensional configuration adaptable to karussel operation where independent parallel actuation is required.
2Device complexity
If the carriage rotation and escapement actuation are arranged in series (tourbillon), then the structure is simplified, but the rotation cannot occur independently when escapement is blocked
Solution Approach 1:
The torque transmission system is divided into separate independent paths: one path drives the carriage rotation (both inner and outer carriages), and another path drives the escapement mechanism. This allows the carriage to rotate independently even when the escapement is blocked, while still maintaining a relatively compact structure through shared mounting arrangements.
3Device complexity
If a single carriage configuration is used, then the structure is simpler, but it cannot achieve three-dimensional rotation for improved precision
Solution Approach 1:
The inner carriage is nested inside the outer carriage, with the inner carriage rotating about a first axis and the outer carriage rotating about a second axis. This nested configuration achieves three-dimensional rotation capability while maintaining a compact structure, as the inner carriage fits within the space of the outer carriage rather than requiring separate mounting volumes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design allows for independent actuation of the escapement mechanism, outer, and inner carriages, enabling adjustable rotational speeds and improved precision by preventing idling and excessive rotation, enhancing the horological movement's accuracy.
Implementation Method 1
an elastic return element are required in order to constitute a mechanical resonator. Conventionally, a balance spring acts as an elastic return element for the inertial mass
Implementation Method 2
drive means provided with a barrel and a gear train, a first part of the torque provided by the drive means being transmitted to the outer carriage, and a second part of the torque being transmitted to the inner carriage
Implementation Method 3
In order to reduce the undesirable effects of gravity on the motion of the regulating member, complications of the tourbillon or karussel type have been developed, so as to cause the regulating member assembly to rotate about an axis of rotation
Data Source
AI summary
A three-dimensional karussel for a horological movement including a drive device provided with a barrel and a gear train, the three-dimensional karussel including an inertial mass, an elastic return device for the inertial mass and an escapement mechanism, wherein the horological movement includes an inner carriage and an outer carriage, the inner carriage carrying the inertial mass, the elastic return device for the inertial mass and the escapement mechanism, the inner carriage being capable of moving in rotation about a first axis of rotation, the outer carriage being capable of moving in rotation about a second axis of rotation, the inner carriage being housed inside the outer carriage, the drive device being configured to actuate the rotational motion of the outer carriage in parallel with the rotational motion of the inner carriage.