Clutch for full-automatic washing machine

Abstract

The clutch for fully automatic washing machine has screw-torsion spring clutch structure to transmit dewatering force and has mechanical braking and motion stopping functions. The present invention has the main features that the two ends of the clutch spring are connected to some parts for screwing to loose and expanding to open, for example reverse installed double ratchet wheel-ratchet structure. When the clutch spring is in its non-drive state, the clutch spring is loosened and opened fully and has no friction with input sleeve and axle sleeve and the niput sleeve is separated from the axls sleeve reliably. So, the clutch structure and the motion stopping structure have long service life.

Description

technical field [0001] The invention relates to a clutch for a fully automatic washing machine which transmits dehydration rotational force with a helical torsion spring clutch structure and has mechanical brake and resistance functions. Background technique [0002] A clutch with a helical torsion spring clutch structure that transmits dehydration rotational force and has a mechanical resistance function has been used in fully automatic washing machines for a long time. Its typical structure can be found in "Household Appliance Maintenance Manual" (September 1993, 2nd edition, People's Education Press, 283 pages). Such as figure 1 As shown, the clutch includes: a washing shaft (1), a hollow dehydration shaft (2) sleeved outside the washing shaft, an input sleeve (12) of the dehydration shaft (2), an input shaft (16), an input shaft (16) The connecting shaft sleeve (15), the clutch spring (14), the ratchet (18) connected to the lower end of the clutch spring (14) to loosen...

AI Technical Summary

Problems solved by technology

[0003] The shortcoming of prior art is: only lower end of clutch spring (14) links to each other with a ratchet (18) that can unscrew it, and upper end is free end

[0005] The Japanese Patent Publication JP 10-71296A discloses that the single ratchet wheel with two unidirectional brake bands does not have a one-way bearing (or non-return spring) and is to replace the one-way bearing (or non-return spring) with two unidirectional brake bands. , because its comparable cost is further lower than that of a single two-way brake band, the comparable cost is significantly lower, but its resistance performance is not as good as that of a one-way bearing (or non-return spring). When a single ratchet is still used, the chance of failure increases, and the average The trouble-free working cycle is reduced, resulting in little change in cost performance, so it has been proposed for many years and has not seen practical application

Images