Torque adjustment device, movement and mechanical timepiece

An adjustment device and mechanical technology, which is applied in the field of torque adjustment devices, movement and mechanical clocks and watches, can solve the problems such as the change of the action torque of the escapement, and achieve the effect of inhibiting the change and inhibiting the change of the action torque
CN104423243AInactive Publication Date: 2015-03-18SEIKO INSTR INC
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SEIKO INSTR INC
Publication Date
2015-03-18
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a torque adjustment device, a movement and a mechanical timepiece which can restrain the change of movement torque of an escape device. The torque adjustment device comprises a torque adjustment clockwork spring mounted in a wheel train from a barrel to an escape device, an escape device side torque adjustment wheel connected with a first end of the torque adjustment clockwork spring and connected to the wheel chain part closer to the escape device side than the torque adjustment clockwork spring, a barrel side torque adjustment wheel connected with a second end of the torque adjustment clockwork spring and connected to the wheel train part closer to the barrel side than the torque adjustment clockwork spring, and a period control mechanism comprising a locking portion and a locking release portion. The locking portion locks the barrel side torque adjustment wheel after enabling the barrel side torque adjustment wheel to rotate a specified angle so as to prevent the torque from being transmitted to the escape device side from the barrel side torque adjustment wheel. The locking release portion works on the locking portion according to a specified period and releases the locking of the barrel side torque adjustment wheel. The period control mechanism enables the barrel side torque adjustment wheel to rotate relatively and intermittently relative to the escape device side torque adjustment wheel.
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Description

technical field

[0001] The invention relates to a torque adjusting device, a movement and a mechanical clock. Background technique

[0002] In mechanical timepieces, when the operating torque transmitted from the barrel to the escapement changes with the unwinding of the mainspring of the barrel, the swing angle of the balance with hairspring changes, and the rate of the watch changes. Therefore, in order to suppress fluctuations in the operating torque transmitted to the escapement, a constant torque mechanism (torque adjustment device) in which a subspring (spring for torque adjustment) is arranged between the barrel and the escapement has been proposed. ). Constant-torque mechanisms are roughly classified into those using a flywheel (for example, refer to Patent Document 1) and those involving periodical control by a cam or the like (for example, see Patent Document 2).

[0003] prior art literature

[0004] patent documents

[0005] Patent Document 1: Specification o...

Claims

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