Receiving unit for timepieces
AssigneeCitizen Watch Co., Ltd.
InventorsHiroshi Mabuchi, Isao Yabe
Life of this patent
Estimating the term…
Abstract
A receiving unit for timepieces, especially an improved receiving unit for a self-winding mechanism of self-winding timepieces. The receiving unit comprises guide portions and springs which are formed together as a unitary structure using resin.
Claims10
In a receiving unit for timepieces arranged to support a self-winding mechanism having a weight wheel pinion secured to a weight, a reduction wheel train for transmitting the rotational movement of said weight wheel pinion to a main spring to wind up said main spring, and a control means for controlling said reduction wheel train, the improvement comprising:
- (a) a bearing portion provided on and integral with said receiving unit for rotatably supporting said reduction wheel train;
- (b) a cutout formed in a predetermined position of said receiving unit;
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- (c) said control means including a leaf spring integral with said receiving unit and projecting into said cutout from said receiving unit and a movable member movably arranged on said receiving unit to be urged in a given direction by means of said leaf spring.
In a receiving unit for timepieces arranged to support a self-winding mechanism having a weight wheel pinion secured to a weight, a reduction wheel train for transmitting the rotational movement of said weight wheel pinion to a main spring to wind up said main spring and having first and second control means for controlling said reduction wheel train, the improvement comprising:
- (a) bearing portions provided on said receiving unit for rotatably supporting said reduction wheel train;
- (b) first and second windows formed in predetermined positions of said receiving unit, said windows completely surrounded by said receiving unit;
- (c) first and second leaf springs integrally formed with said receiving unit and projecting into said windows;
- (d) said first control means being a reversing mechanism comprised of a reverser wheel, said first leaf spring and a guide portion;
- (e) said reverser wheel engaging said weight wheel pinion and said reduction wheel train;
- (f) said first leaf spring arranged to urge said reverser wheel in a given direction;
- (g) said guide portion formed in said receiving unit to support said reverser wheel;
- (h) said second control means comprising a click mechanism having a click lever engaging said reduction wheel, said second leaf spring arranged to urge said click lever in a given direction;
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- (i) said bearing portions, first and second leaf springs and said guide portion integrally forming a unitary structure.
Dependencies are inferred from the claim text.