CN2778856Y - Fully automatic retarding cluth for washing machine - Google Patents

Abstract

The utility model relates to a speed reducing clutch used for a fully-automatic washing machine, which has the advantages of compact structure, low rotational speed of a dewatering drum, low power consumption, steady transmission and low running noise. The utility model comprises an input shaft and an output shaft, wherein a dewatering shaft is sheathed with the outer part of the output shaft; the input shaft is connected with the output shaft through a gear structure in a braked wheel; the input shaft is positioned on the outer part position of a brake wheel casing, which is sheathed with an engaging-disengaging sleeve; a belt wheel is sheathed on the outer part of the combining position of the lower end of the engaging-disengaging sleeve and the input shaft; on the combining position of the brake wheel casing and the engaging-disengaging sleeve, an engaging-disengaging spring and a ratchet wheel are sheathed with the outer parts of the brake wheel casing and the engaging-disengaging sleeve from inside to outside in sequence; a ratchet pawl is installed on the side part of the ratchet wheel; a brake belt is installed on the outer part of the braked wheel. The utility model is characterized in that an upper bracket of the gear structure is connected with the dewatering shaft through an oscillating tooth mechanism and a fixed tooth mechanism.

Description

Decelerating clutch for full-automatic washing machine

(1) technical field

The utility model relates to clutch, is specially decelerating clutch for full-automatic washing machine.

(2) background technology

Bucket all rotates with impeller in during the washing of " double dynamical " washing machine, its function mainly relies on the clutch coupling of washing machine structure to realize, the clutch of washing machine producer employing at present has double dynamical double reduction clutch, three grades of speed-reducing clutchs of single action power, single action power level Four speed-reducing clutch, differential type speed change speed-reducing clutch.And double dynamical double reduction clutch will be equipped with the double speed alternating current generator, and the belt pulley size of its configuration is bigger, so the scope of application is subjected to certain restriction; And three grades of speed-reducing clutchs of single action power adopt three grades of reducing gears, duplicate gear is born the output variable speed of axle and dehydration barrel outer shaft in the impeller simultaneously, so requirement of strength is higher, owing to be subjected to the restriction of clutch size, the speed reducing ratio of dehydrating shaft and wash shaft can't be too big, generally about 1: 2～2.5,, be only applicable to low capacity, underload occasion so the rotating speed of dehydration barrel is higher relatively; Single action power level Four speed-reducing clutch is on three grades of reducing gear bases of three grades of speed-reducing clutchs of single action power, increase of the gear reduction of fist-order wave wheel shaft again to dehydrating shaft, after level Four is slowed down, the dehydration barrel rotating speed is lower, the speed reducing ratio of dehydration barrel and impeller can reach 1: 3～and 5, but owing to be subjected to the restriction of clutch size, the level Four reduction gearing is thinner, so need to adopt the high strength material or increase axial dimension as far as possible, and machining accuracy and technological requirement are higher; Differential type speed change speed-reducing clutch adopts fixed shaft gear train and enclosed type differential gear train combining form, and same reduction gearing is thinner because of being subjected to the restriction of clutch size, and in addition, for satisfying specific gearratio, change-speed gearing need adopt bigger displacement.Its integrated artistic is better than foregoing clutch; But the restriction of its physical dimension, bearing capacity are difficult to do greatly.

(3) summary of the invention

At the above-mentioned shortcoming of existing decelerating clutch for full-automatic washing machine, the utility model provides another decelerating clutch for full-automatic washing machine, its compact conformation, dehydration barrel rotating speed can be lower, power consumption is little, transmission also steadily, running noise is low.

Its technical scheme is such: it comprises power shaft, output shaft, the outer cover of described output shaft is equipped with dehydrating shaft, described power shaft, output shaft connects by the gear structure of braked wheel inside, the position that described power shaft is positioned at described braked wheel housing exterior is set with clutch cover, the outer cover of the binding site of the lower end of described power shaft and described clutch cover is equipped with belt wheel, junction at the shell and the described clutch cover of described braked wheel, both outsides are set with clutch spring and ratchet from inside to outside successively, the sidepiece of described ratchet is equipped with ratchet, the outside of described braked wheel is equipped with brake band, it is characterized in that: the upper bracket of described gear structure passes through oscillating tooth, permanent tooth mechanism is connected with dehydrating shaft.

It is further characterized in that: described gear structure comprises planetary gear, described planetary gear respectively with input shaft gear that is set in described power shaft upper end and the internal gear engagement that is positioned at the described planetary gear outside, described planetary axle is installed on tooth rest upper bracket and lower carriage, the internal spline of the upper bracket of described tooth rest and the spline engagement that is set in described output shaft lower end; Described oscillating tooth, permanent tooth mechanism comprises oscillating tooth, permanent tooth, shock wave device, the external splines engagement of the internal spline of described shock wave device and the upper bracket of described tooth rest, the part that described shock wave device is positioned at spline top is eccentric shape, the upside of described shock wave device, downside is respectively arranged with the interlock plate and the plate that links down, be penetrated with described oscillating tooth respectively between described upward interlock plate and the described plate of interlock down, the envelope surface of the middle part one side wheel stream contact permanent tooth of described oscillating tooth, opposite side contacts shock wave device respectively, the outer surface contact braked wheel shell of described permanent tooth, described external splines engagement of going up interlock plate internal spline and dehydrating shaft; Described oscillating tooth, permanent tooth mechanism comprise oscillating tooth, permanent tooth, shock wave device, on the plate that links, described oscillating tooth is spheroidal, described oscillating tooth is respectively through the described interlock plate of going up, the envelope surface of the described permanent tooth of contacts side surfaces at the top of described oscillating tooth, the end face of bottom contact with the annular groove of described shock wave device, described annular groove decentered distribution is in the surface of described shock wave device, described permanent tooth spiral-lock is in the shell of braked wheel, the internal spline of described shock wave device and the engagement of the external splines of described upper bracket, described external splines engagement of going up the internal spline and the described dehydrating shaft of interlock plate; It is petal that the envelope surface of described permanent tooth is plum.

The utility model adopts after the said structure, the combination of planetary gear speed-reduction and Oscillating Tooth Gear Reducer when washing machine washs, is realized that by planetary gear the output of impeller axle is rotated, realize the output rotation of dehydration barrel by Oscillating Tooth Gear Reducer, the two realizes the constant rotational speed ratio, compares its compact conformation with preceding several " double dynamical " clutch form, the dehydration barrel rotating speed can be lower: again because of adopting the contact of rolling between the part of power transmission mutually, power consumption is little, and transmission is also steady, and running noise is low; Because multiple tooth engagement makes bearing capacity and impact resistance stronger in the Oscillating Tooth Gear Reducer, output rigidity is big, and return difference is little.

(4) description of drawings

Fig. 1 is the cutaway view of front view of the present utility model;

The structural representation that Fig. 2 overlooks for shock wave device, oscillating tooth, permanent tooth among Fig. 1;

Fig. 3 is the cutaway view of the front view of another kind of structure of the present utility model.

(5) specific embodiment

See Fig. 1, Fig. 2, the utility model comprises power shaft 3, output shaft 10, the outer cover of output shaft 10 is equipped with dehydrating shaft 9, power shaft 3, output shaft 10 connects by the gear structure of braked wheel 4 inside, gear structure comprises planetary gear 15, planetary gear 15 respectively with the engagement of the ring gear of input shaft gear that is set in power shaft 3 upper ends and tooth rest, the axle of planetary gear 15 is installed on the upper bracket 6 and the lower carriage of tooth rest, the internal spline of upper bracket 6 and the external splines engagement that is set in output shaft 10 lower ends, power shaft 3 is set with clutch cover 11 from the position that the shell of braked wheel 4 stretches out, power shaft 3 is equipped with belt wheel 2 with the outer cover of the binding site of the lower end of clutch cover 11, junction at the shell and the clutch cover 11 of braked wheel 4, both outsides are set with clutch spring 1 and ratchet 12 from inside to outside successively, the sidepiece of ratchet 12 is provided with ratchet 13, the outside of braked wheel 4 is equipped with brake band 5, and (ratchet 13 and brake band 5 are by shift fork 19 controls, between connection and structural relation all belong to prior art), upper bracket 6 passes through oscillating tooth, permanent tooth mechanism is connected with dehydrating shaft 9.See Fig. 1, Fig. 2, described oscillating tooth, permanent tooth mechanism comprises oscillating tooth 18, permanent tooth 17, shock wave device 7, the external splines engagement of the internal spline of shock wave device 7 and the upper bracket of tooth rest 6, the upside of shock wave device 7, downside is respectively arranged with interlock plate 8 and the plate 16 that links down, be penetrated with oscillating tooth 18 respectively between last interlock plate 8 and the following interlock plate 16, oscillating tooth 18 is cylindrical, the envelope surface of the middle part one side wheel stream contact permanent tooth 17 of oscillating tooth 18, opposite side contact shock wave device 7, the shell of the outer surface contact braked wheel 4 of permanent tooth 17, the external splines engagement of last interlock plate 8 internal splines and dehydrating shaft 9, this is embodiment 1; See Fig. 3, described oscillating tooth, permanent tooth mechanism comprise oscillating tooth 18, permanent tooth 17, on link plate 8, shock wave device 7, oscillating tooth 18 is spheroidal, oscillating tooth 18 is respectively through last interlock plate 8, the envelope surface of the contacts side surfaces permanent tooth 17 at the top of oscillating tooth 18, the bottom end face of oscillating tooth 18 contact with the annular groove of shock wave device 7, the annular groove decentered distribution is in the surface of shock wave device 7, permanent tooth 17 spiral-locks are in the shell of braked wheel 4, the external splines engagement of the internal spline of shock wave device 7 and upper bracket 6, the external splines engagement of the internal spline of last interlock plate 8 and dehydrating shaft 9, this is embodiment 2.In Fig. 1, Fig. 3, it is petal that the envelope surface of permanent tooth 17 is plum, and the number of teeth of permanent tooth is exactly the petal number of the petal envelope surface of plum, and the number of teeth of permanent tooth is 6 among Fig. 2.Below respectively in conjunction with Fig. 1, Fig. 3 describes washing machine and is in course of action of the present utility model when washing operating mode: see Fig. 1, belt pulley 2 drives power shaft 3 and rotates, input shaft gear drives planetary gear 15 and rotates, the rotating shaft of planetary gear 15 drives upper bracket 6, upper bracket 6 drives output shaft 10 by its internal spline on the one hand and rotates, upper bracket 6 drives shock wave device 7 rotations on the other hand, because shock wave device 7 is walked partial center, extruding oscillating tooth 18, because permanent tooth 17 does not move, oscillating tooth 18 can only be along the envelope surface and shock wave device 7 runnings of permanent tooth, thereby interlock plate 8 runnings in the drive, interlock plate 8 drives dehydrating shaft 9 and rotates, and output shaft 10 drives impeller, and dehydrating shaft 9 drives dehydration barrel; See Fig. 3, upper bracket 6 drives output shaft 10 by its internal spline on the one hand and rotates, upper bracket 6 drives shock wave device 7 rotations on the other hand, because permanent tooth 17 does not move, oscillating tooth 18 can only drive along the envelope surface of permanent tooth 17 goes up 8 runnings of interlock plate, rotate thereby drive dehydrating shaft 9, output shaft 10 drives impeller, and dehydrating shaft 9 drives dehydration barrel.In the said structure of the present utility model, the velocity ratio between output shaft 10 and the dehydrating shaft 9 and the rotation direction of dehydrating shaft 9 are determined by the permanent tooth 17 and the gear ratio of oscillating tooth 18.When washing machine was in dehydration condition, brake band 5 was thrown off with braked wheel 4, and ratchet 13 unclamps, clutch spring 1 is held tightly, power shaft 3 and braked wheel 4 are joined together, after motor speed slows down by belt pulley 2, power shaft 3, output shaft 10 and braked wheel 4 are rotated together with the back speed of slowing down.And braked wheel inner chamber upper bracket 6 is with braked wheel 4 runnings, planetary gear 15 is with support 6 all not rotations of revolution, among Fig. 1, last interlock plate 8 internal splines and braked wheel 4 rotate synchronously, shock wave device 7 rotates synchronously with upper bracket 6, thereby guarantee that this moment, oscillating tooth did not partly have speed-down action, on the plate 8 that links drive dehydrating shafts 9 to rotate with the speed synchronization of belt pulley 2 inputs, realize that dehydration barrel and impeller are with same rotating speed rotation dehydration action; Among Fig. 3, last interlock plate 8 rotates synchronously with braked wheel 4, shock wave device 7 rotates synchronously with upper bracket 6, last interlock plate 8 drives dehydrating shaft 9 to rotate with the speed synchronization of belt pulley 2 inputs, realize that dehydration barrel and impeller are with same rotating speed rotation dehydration action, because unilateral bearing 14 acts on, its dehydration operates as folk prescription to action simultaneously.

Claims (5)

1, decelerating clutch for full-automatic washing machine, it comprises power shaft, output shaft, the outer cover of described output shaft is equipped with dehydrating shaft, described power shaft, output shaft connects by the gear structure of braked wheel inside, the position that described power shaft is positioned at described braked wheel housing exterior is set with clutch cover, the outer cover of the binding site of the lower end of described power shaft and described clutch cover is equipped with belt wheel, junction at the shell and the described clutch cover of described braked wheel, both outsides are set with clutch spring and ratchet from inside to outside successively, the sidepiece of described ratchet is equipped with ratchet, the outside of described braked wheel is equipped with brake band, it is characterized in that: the upper bracket of described gear structure passes through oscillating tooth, permanent tooth mechanism is connected with dehydrating shaft.

2, according to the described decelerating clutch for full-automatic washing machine of claim 1, it is characterized in that: described gear structure comprises planetary gear, described planetary gear respectively with input shaft gear that is set in described power shaft upper end and the internal gear engagement that is positioned at the described planetary gear outside, described planetary axle is installed on the upper bracket and the lower carriage of tooth rest, the internal spline of the upper bracket of described tooth rest and the spline engagement that is set in described output shaft lower end.

3, according to the described decelerating clutch for full-automatic washing machine of claim 1, it is characterized in that: described oscillating tooth, permanent tooth mechanism comprises oscillating tooth, permanent tooth, shock wave device, the external splines engagement of the internal spline of described shock wave device and the upper bracket of described tooth rest, the part that described shock wave device is positioned at spline top is eccentric shape, the upside downside of described shock wave device is respectively arranged with the interlock plate and the plate that links down, be penetrated with described oscillating tooth respectively between described upward interlock plate and the described plate of interlock down, the envelope surface of the middle part one side wheel stream contact permanent tooth of described oscillating tooth, opposite side contacts shock wave device respectively, the outer surface contact braked wheel shell of described permanent tooth, described external splines engagement of going up interlock plate internal spline and dehydrating shaft.

4, according to the described decelerating clutch for full-automatic washing machine of claim 1, it is characterized in that: described oscillating tooth, permanent tooth mechanism comprises oscillating tooth, permanent tooth, shock wave device, last interlock plate, described oscillating tooth is spheroidal, described oscillating tooth is respectively through the described interlock plate of going up, the envelope surface of the described permanent tooth of contacts side surfaces at the top of described oscillating tooth, the end face of bottom contacts with the annular groove of described shock wave device, described annular groove decentered distribution is in the surface of described shock wave device, described permanent tooth spiral-lock is in the shell of braked wheel, the internal spline of described shock wave device and the engagement of the external splines of described upper bracket, described external splines engagement of going up the internal spline and the described dehydrating shaft of interlock plate.

5, according to claim 3 or 4 described decelerating clutch for full-automatic washing machine, it is characterized in that: it is petal that the envelope surface of described permanent tooth is plum.

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