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Gear for clock and clock

A technology for clocks and gears, which is applied in the field of clocks and clocks. It can solve the problems of increased manufacturing process, low silicon toughness, film peeling, etc., and achieve the effect of improving work reliability, high work reliability and realizing low cost.

Inactive Publication Date: 2012-04-04
SEIKO INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the film thickness is thin, even a high-hardness protective film is likely to peel off due to friction, impact, etc., and sufficient abrasion resistance may not be ensured.
[0016] In addition, since surface treatment is required after the silicon base material is processed into the shape of a watch gear by photolithography, the number of manufacturing steps increases, making it impossible to manufacture efficiently and also hindering cost reduction.
[0017] Also, as mentioned above, since silicon itself has very low toughness, it is easy to be deformed or cracked (defective) when subjected to impact, etc.
Therefore, it is difficult to expect high reliability for watch gears that slide a lot and are prone to shocks

Method used

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  • Gear for clock and clock
  • Gear for clock and clock
  • Gear for clock and clock

Examples

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Embodiment Construction

[0044] Below, refer to Figure 1 to Figure 5 One embodiment of the present invention will be described. In addition, in this embodiment, a mechanical timepiece will be described as an example of a timepiece, and an escape wheel will be described as an example of a gear for a timepiece.

[0045] First, refer to Figure 1 to Figure 3 A mechanical clock will be described. Furthermore, figure 1 It is a top view of the watch side of the movement. figure 2 It is a schematic partial sectional view showing the escape wheel part from the barrel wheel. image 3 It is a schematic partial cross-sectional view showing the balance with hairspring from the escape wheel.

[0046] such as these Figure 1 to Figure 3 As shown, the mechanical timepiece 1 has a movement 100 . The movement 100 has a main plate 102 constituting a substrate of the movement 100 . The stem 110 is rotatably assembled in the stem guide hole 102 a of the main plate 102 . In addition, a dial 104 is mounted on t...

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Abstract

The invention provides a high-quality gear for clocks and a clock. The gear which can be manufactured with high efficiency thus has a low cost. Meanwhile, the gear has the characteristics of delicacy, high-precision shape, high wear resistance and high working reliability. The gear (130) for clocks comprises a tooth-shaped gear part (132) formed through photoetching. The gear part is made of materials which can survive the photoetching and has higher hardness and toughness than silicon (Si).

Description

technical field [0001] The present invention relates to a gear for a timepiece and a timepiece having the gear for a timepiece. Background technique [0002] In timepieces represented by mechanical timepieces, a large number of timepiece gears are used. Such timepiece gears are formed in various shapes according to usage, and power is transmitted through complicated combinations. In the past, such clock gears were mainly manufactured by mechanical processing such as punching, but in recent years, the method adopted is to use photolithography (photolithography), one of the technologies of micro-electro-mechanical systems (MEMS: Micro Electro Mechanical Systems). . This is because the machining accuracy of the above-mentioned method is higher than that of machining, and even complex shapes can be manufactured with high precision. [0003] Therefore, as one of the manufacturing methods using photolithography technology, there is known a method of electroforming using an elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B13/02
CPCG04B13/02G04B15/14
Inventor 麦岛胜也
Owner SEIKO INSTR INC
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