Balance wheel and hair spring mechanism used for mechanical watches and mechanical watch with same

Abstract

The invention provides a balance wheel and hair spring mechanism used for mechanical watches. The balance wheel and hair spring mechanism comprises a balance bridge, a balance shaft, a balance wheel, an inner-pile double disc and a hair spring, the balance bridge is arranged on a bottom plate of a mechanical watch, the balance shaft is rotatably arranged on the balance bridge by a micro bearing, the balance wheel is arranged at a first end of the balance shaft, the inner-pile double disc is a combination of an inner pile and double discs and is connected at a second end of the balance shaft, the hair spring is arranged on the inner-pile double disc in a sleeved manner, and one end of the hair spring is connected to the inner-pile double disc while the other end of the same is connected to the balance bridge. By using the micro bearing to replace a jewel bearing commonly used in the prior art and due to the miniaturized size of the micro bearing, the balance shaft with large diameter can be mounted within certain mounting space; the balance shaft and the micro bearing have a low friction coefficient, so that the balance wheel and hair spring mechanism can withstand big external action force and is guaranteed to be less prone to being damaged, and the need for an equipment shock absorber is omitted.

Description

technical field [0001] The invention relates to the field of mechanical watches, in particular to a balance spring mechanism for a mechanical watch and a mechanical watch with the mechanism. Background technique [0002] At present, for general mechanical watches, the balance wheel hairspring mechanism generally adopts a jewel bearing and a balance shaft configuration. However, due to the large friction coefficient in the cooperation between the jewel bearing and the balance shaft, once the mechanical watch is subjected to a large external force, the matching structure of the jewel bearing and the balance shaft is difficult to resist or bear the force, resulting in the gap between the components. There is a deviation between them, so that the internal structure of the mechanical watch is deviated or damaged. For this reason, the commonly used countermeasures are to install shock absorbers on the upper and lower sides of the mechanical watch respectively, and through the elas...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, and provide a balance wheel and hairspring mechanism for mechanical watches, so as to solve the problems of the overall structure of the balance wheel and hairspring mechanism in the prior art, high cost of consumables and troublesome installation, At the same time, mechanical watches with this mechanism are also available

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