Horological movement with automatic winding having time-displaying hands located on the same side as the rotor

Patent metadata

Field	Value
Publication number	US-11550260-B2
Application number	US-201916545306-A
Country	US
Kind code	B2
Filing date	Aug 20, 2019
Priority date	Sep 24, 2018
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

A horological movement with automatic winding, including a plate, a barrel, a cannon-pinion including a minute pipe which supports a minute hand, an hour wheel set including an hour pipe which supports an hour hand, an oscillating weight, arranged on the same side of the plate as the cannon-pinion and the hour wheel set, which includes a central hub, a rim, a heavy sector, a lifting arbor rigidly connected to the central hub and about which the minute pipe and the hour pipe are mounted coaxially, the minute hand and the hour hand being located between the plate and the rim of the rotor.

First claim

The invention claimed is:

1. A horological movement with automatic winding, which comprises:
a plate,
a barrel mounted such that it rotates relative to the plate and supporting a primary toothed wheel,
a cannon-pinion mounted such that it rotates relative to the plate about a central axis and meshing with the primary toothed wheel of the barrel by way of a motion-work train, said cannon-pinion comprising a minute pipe which supports a minute hand,
an hour wheel set mounted such that it rotates relative to the plate about said central axis and meshing with the cannon-pinion, said hour wheel set comprising an hour pipe which supports an hour hand,
an oscillating weight in the form of a rotor mounted such that it rotates relative to the plate about the central axis, on the same side of the plate as the cannon-pinion and the hour wheel set, said rotor comprising:
a central hub that meshes with the barrel,
a rim rigidly connected to the central hub,
a heavy annular sector which is rigidly connected to the rim;

wherein said horological movement comprises a lifting arbor rigidly connected to the central hub and via which this hub is mounted such that it rotates relative to the plate; and wherein the minute pipe and the hour pipe are mounted coaxially about the lifting arbor that passes therethrough, the minute hand and the hour hand being located between the plate and the rim of the rotor.

2. The horological movement according to claim 1 , comprises a bearing provided with a ring that is fixed relative to the plate, a ring that is capable of moving in rotation relative to the fixed ring about the central axis, and rolling elements inserted between the two rings; and wherein the lifting arbor is rigidly connected to the mobile ring.

3. The horological movement according to claim 2 , wherein the ring capable of moving in rotation supports a toothed transmission wheel that meshes with the barrel via a reduction gear train.

4. The horological movement according to claim 3 , wherein the barrel supports a secondary toothed wheel that is separate from the primary toothed wheel and with which the reduction gear train meshes.

5. The horological movement according to claim 2 , wherein the bearing is mounted on a bar attached to the plate.

6. The horological movement according to claim 2 , wherein the fixed ring is an inner ring and the ring capable of moving in rotation is an outer ring.

7. The horological movement according to claim 6 , wherein the bearing is mounted on a bar attached to the plate; and wherein the inner ring of the bearing is attached to the bar by a centre screw, this centre screw further engaging, with this bar, an intermediate part, which has a bottom with a central hole for the passage of the centre screw and a rigid tube wherein the head of this centre screw is located, said rigid tube being located inside a central opening in the lifting arbor, said lifting arbor forming a rotating tube.

8. The horological movement according to claim 1 , comprises a socket that is fixed relative to the plate and on which the hour pipe and the minute pipe are mounted, said fixed socket surrounding the lifting arbor.

9. The horological movement according to claim 8 , comprising:
the hour pipe is slotted onto the socket,
the minute pipe is slotted onto the hour pipe.

10. The horological movement according to claim 8 , wherein the socket is mounted, such that it is fixed, on an upper bar, which is attached to the plate, said upper bar having an internal face on the same side as the plate, and an opposite external face.

11. The horological movement according to claim 10 , wherein the barrel is mounted on the same side of the upper bar as the internal face, whereas the cannon-pinion, the hour wheel set and the rotor are mounted on the same side of said upper bar as the external face.

12. The horological movement according to claim 11 , comprising:
a motion-work train meshing with a minute-pinion rigidly connected to the minute pipe, which motion-work train is mounted such that it rotates relative to the upper bar on the same side thereof as the external face,
a reverser wheel set, which comprises:
an upper wheel located on the same side of the upper bar as the external face and meshing with the motion-work train,
a lower wheel located on the same side of the upper bar as the internal face and rigidly connected to the upper wheel for rotation therewith and meshing with the primary toothed wheel of the barrel,
a shaft connecting, through the upper bar, the upper wheel to the lower wheel.

Assignees

• Eta Sa Mft Horlogere Suisse

Inventors

• Cattin Christophe
• Rachdi Yassine
• Kaelin Laurent
• Boizard Dominique

Classifications

• G04B5/14 Primary

  acting in both directions · CPC title

• G04B13/02

  Wheels; Pinions; Spindles; Pivots (bearings G04B31/00 {; chain wheels, spindles for chain wheels, also chains and driving weights G04B1/08}) · CPC title

• G04B45/02

  Time pieces of which the clockwork is visible partly or wholly {(figures or parts thereof moved by the clockwork G04B45/0038)} · CPC title

• G04B5/181 Primary

  The bearing of the rocking bar is in the centre of rotation combined with a support or guide arrangement · CPC title

• G04B5/184

  Guide arrangement of the moving weight in a circular course · CPC title