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Torque adjusting device, movement and mechanical clock

An adjustment device, a mechanical technology, applied in mechanically driven clocks, clocks, gear mechanisms, etc., can solve the problems of difficult to set the winding amount of the scroll spring 18, poor volume efficiency, etc.

Active Publication Date: 2014-09-17
SEIKO INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even if the swing angle of the balance wheel is measured, it is difficult to set the spiral spring 18 to a predetermined amount of tightening, and it is not easy to find defects in the wheel train and escapement.
[0013] Furthermore, in the invention of Patent Document 2, a mechanism for disengaging the adjustment member 20 and the control movable member 42 is required, and the volumetric efficiency is poor in order to ensure its arrangement space (the movement space of the control movable member 42 and the arrangement space of the coil spring 48 ).

Method used

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  • Torque adjusting device, movement and mechanical clock
  • Torque adjusting device, movement and mechanical clock
  • Torque adjusting device, movement and mechanical clock

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Experimental program
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Effect test

no. 1 Embodiment approach

[0057] (First Embodiment, Torque Adjusting Device 6 )

[0058] Such as image 3 As shown, if the operating torque transmitted from the barrel 10 to the escapement 50 changes with the unwinding of the mainspring, the swing angle of the balance wheel changes, and the rate of change of the timepiece changes. In order to suppress such fluctuations in operating torque, the movement 5 includes a torque adjustment device 6 in which a subspring (torque adjustment spring) 65 is incorporated into a wheel train from the barrel 10 to the escapement 50 .

[0059] The torque adjustment device 6 is equipped with: a torque adjustment device main body 60, which is equipped with a secondary spring 65; a torque adjustment escapement 70, which controls the movement of the torque adjustment device main body 60; a tightening amount adjustment mechanism 80, which adjusts The winding amount of the subspring 65 ; and the power switching mechanism (planetary gear mechanism 90 ), which is assembled in ...

no. 2 Embodiment approach ）

[0113] Figure 9 It is an explanatory diagram of the torque adjustment device 206 of the second embodiment, and is equivalent to figure 2 Side sectional view of a portion of the line A1-O-P-Q-A2. in the aforementioned image 3 In the torque adjusting device 6 according to the first embodiment shown, the planetary gear mechanism 90 is incorporated in the third wheel 30, but Figure 9 The torque adjustment device 206 of the second embodiment shown is different in that a planetary gear mechanism 290 is incorporated into the fourth wheel 40 . In addition, the detailed description of the part of the same structure as 1st Embodiment is abbreviate|omitted.

[0114] in the aforementioned image 3 In the illustrated first embodiment, the torque adjustment device main body 60 including the ratchet 64 , the subspring 65 , and the output gear 66 is assembled in the fourth wheel 40 . The torque adjustment device main body 60 may be assembled in a part other than the fourth wheel 40 ,...

no. 3 Embodiment approach ）

[0128] Figure 10 It is an explanatory diagram of the torque adjustment device 306 of the third embodiment, and is a plan view excluding the wheel train support plate on the surface side of the movement. In addition, in Figure 10 The illustration of the bottom plate and the wheel train support plate is omitted in . in the aforementioned figure 2 In the torque adjusting device 6 according to the first embodiment shown, the torque adjusting device main body 60 is provided with a ratchet 64, but Figure 10 The torque adjustment device 306 of the third embodiment shown is different in that a torque adjustment device main body 360 includes a flywheel 364 . In addition, the detailed description of the part of the same structure as 1st Embodiment is abbreviate|omitted.

[0129] Such as Figure 10 As shown, the torque adjustment device main body 360 of the third embodiment includes: a subspring (spring for torque adjustment) 365; The outer peripheral end (first end) is connect...

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Abstract

The invention provides a torque adjusting device (6) which can handle winding amount of an assistant spring (65) and is excellent in volume efficiency, a movement and a mechanical clock. The torque adjusting device (6) provided with the assistant spring (65) comprises an output gear wheel (66) which is connected with the end part of the inner periphery of the assistant spring and is connected with a release catch (50); a ratchet wheel (64) which is connected with the end part of the outer periphery of the assistant spring and rotates intermittently relative to the output gear wheel (66); a winding amount adjusting mechanism (80) which adjusts the winding amount of the assistant spring (65); and a planetary gear mechanism (90) which is connected with the ratchet wheel (64), a barrel wheel (10) and the winding amount adjusting mechanism (80). The winding amount adjusting mechanism (80) comprises a winding amount holding part which holes the winding amount of the assistant spring (65), and a winding amout display part which displays the winding amount of the assistant spring (65).

Description

technical field [0001] The invention relates to a torque adjustment device for a movement and a mechanical clock. Background technique [0002] In mechanical timepieces, when the operating torque transmitted from the barrel to the escapement fluctuates with the unwinding of the mainspring of the barrel, the swing angle of the balance wheel changes, and the differential rate of the timepiece 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 of a cam or the like (for example, see Patent Document 2). [0003] The constant load device (torque adjustment device) of the invention of Patent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B15/00
CPCG04B15/10G04B1/22G04B9/005G04B13/008
Inventor 藤枝久
Owner SEIKO INSTR INC
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