Constant energy escapement for clocks

Abstract

The invention relates to an escapement device for a mechanical timepiece comprising an escape wheel (1) cooperating with a rocker (2) and a movable element (3), the rocker (2) cooperating with the escape wheel by means of arresting means and with a balance plate (4) by means of releasing means, the movable element (3) comprising elastic means and cooperating with a toothing (1.2) of the escape wheel (1) by means of winding means and with the balance plate (4) by means of impulse means, this space-saving escapement device being able to supply an almost constant amount of energy to the balance within a variable barrel torque range.

Claims

1. An escapement device for a mechanical watch, - A rover (1) equipped with teeth (1, 2), - Locker (2), - Movable element (3), - Includes at least one component that forms part of the oscillator of the clock, such as a balance plate (4), The escape wheel (1) cooperates with the rocker (2) and the movable element (3), The rocker (2) cooperates with the escape wheel by a restraining means and cooperates with the component that forms part of the vibrator by a release means. The movable element (3) is equipped with an elastic means configured to store elastic energy, and cooperates with the escape wheel (1) by a winding means and with the component that forms part of the vibrator by an impulse means. - The winding means is configured to perform a winding phase along a first rotational direction of the component forming part of the vibrator, and the impulse means is configured to perform an impulse phase applied by the movable element (3) to the component forming part of the vibrator along at least a second rotational direction of the component forming part of the vibrator while the component forming part of the vibrator is rotating. and - The impulse that operates the impulse means is directly supplied from the movable element (3) to the component that forms part of the vibrator, An escapement device characterized in that the component forming part of the oscillator comprises two fingers or levers (4.3.1, 4.3.2) that form a double lift capable of receiving energy coming from the movable element (3) in both rotational directions of the component forming part of the oscillator.

2. The escapement device according to claim 1, characterized in that the first restraining position of the rocker (2) after the phase in which the elastic means is wound up is different from the second restraining position of the rocker (2) after the impulse phase which is given to the component forming part of the oscillator by the movable element (3).

3. The escapement device according to claim 1 or 2, characterized in that the movable element (3) is restrained by the teeth (1, 2) of the escape wheel (1) after the phase in which the elastic means is wound up.

4. The impulse means is - At least one finger (4.3) or lever protruding from the component forming part of the vibrator, and / or - The escapement device according to claim 1 or 2, characterized by comprising at least one impulse arm (3.2) protruding from the movable element (3).

5. The aforementioned winding means is - At least one tooth portion (1.2) of the escape wheel (1), and / or - The escapement device according to claim 1 or 2, characterized by comprising at least one winding arm (3.3) of the movable element (3).

6. The escapement device according to claim 1 or 2, characterized in that the elastic means of the movable element (3) is formed by a spiral spring (3.4).

7. The escapement device according to claim 1 or 2, characterized in that the elastic means of the movable element (3) is formed by a leaf spring (3.5).

8. The escapement device according to claim 1 or 2, characterized in that the elastic means of the movable element (3) is formed by a leaf spring to form a flexible guide system (3a) that has no physical axis of rotation.

9. The escapement device according to claim 1 or 2, characterized in that the component forming part of the oscillator is the temperature plate (4).

10. A clock equipped with the escapement device described in claim 1 or 2.

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