CN203238466U

CN203238466U - Washing machine dual-uniform-power output device

Info

Publication number: CN203238466U
Application number: CN 201320046908
Authority: CN
Inventors: 陈昌
Original assignee: Changzhou Master Machinery Co Ltd
Current assignee: Changzhou Sinya Electromotor Co Ltd
Priority date: 2013-01-28
Filing date: 2013-01-28
Publication date: 2013-10-16
Anticipated expiration: 2023-01-28

Abstract

The utility model discloses a washing machine dual-uniform-power output device which comprises an input part, a dehydration output part and a reducing mechanism of a washing output part. The washing machine dual-uniform-power output device is characterized in that the input part is fixedly connected with a power part offering rotational kinetic energy, the dehydration output part is connected with the washing output part in a meshed mode, the dehydration output part is fixedly connected with a dehydration shaft sleeve of a washing machine, and the washing output part is connected with a washing shaft of the washing machine. The washing machine dual-uniform-power output device enables the rotating speed of the washing shaft to change along with changes of washing loads.

Description

The two even PTO of washing machine

Technical field

The utility model relates to the washing machine technical field, is specifically related to the two even PTO of a kind of washing machine.

Background technology

Washing machine is to make by chemical breakdown effect and mechanical shock effect to be attached to the machine that the spot on the washings is removed, and it mainly is to drive impeller by drive unit to rotate, and stirs current and clothing and rotates, and reaches the purpose of washing clothes.At present the power source of drive unit commonly used is motor, and the moment when by the output shaft of motor motor being rotated passes to deceleration device, and the output shaft with deceleration device links to each other with impeller again, thereby drives the impeller rotation.

The rotating speed of common electric machine is higher, in order to obtain suitable output speed, in actual applications, need to slow down to motor, the normal mode that adopts makes motor be delivered to decelerator by the one-level pulley decelerates at present, and the deceleration that one or more levels mechanical reduction gear is finished a constant-speed ratio is set in decelerator.This structure is not only complicated, and it is large to take up room.In order to solve this technical problem, have at present some about removing belt pulley, motor directly is connected with decelerator, because its motor body and decelerator remain relatively independent, motor body and decelerator need to take installing space respectively, and structure is compact not, and volume is still larger.

In order further to solve the problems of the technologies described above, publication number is that the Chinese invention patent application of CN102142734A discloses a kind of external rotor electric machine assembly, comprise motor body, driving shaft, transmission device, wherein: driving shaft is fixed on the transmission device, and motor body directly drives driving shaft, motor body has inner diameter volume, and transmission device is installed in the motor body inner diameter volume.Although further having reduced to a certain extent, this structure takes up room, and because its principle is installed in transmission device in diameter of stator bore space by installing component for utilizing on the stator interior circuferential spacing of external rotor electric machine, therefore can't use at the inner rotor motor that does not have the inner space, certain limitation is arranged, the direct driving shaft of its motor body of while, then by the transmission device that is installed in the motor inner diameter volume driving shaft is slowed down, therefore also only take up room for having reduced to a certain extent, but structure is still compact not, further, when transmission device need to be increased volume when obtaining more big speed ratio, inevitable so that external rotor electric machine increase internal diameter volume could be realized this invention, obviously this does not solve the technical problem of essence yet.

In addition, present washing machine all washs according to a kind of fixing rotating speed, no matter the size of wash load, its wash shaft is all washed according to identical rotating speed, this mode of washing not only easily damages the clothing that is washed, and crosses escheat in load and can damage the laundry motor.

Summary of the invention

The purpose of this utility model is exactly in order to solve above-mentioned problems of the prior art, provides a kind of washing machine two even PTO, in order to can change according to the variation of wash load the rotating speed of wash shaft.

The two even PTO of washing machine of the present utility model comprise the reducing gear that has input block, dewaters output block and washing output block, wherein:

Described input block is fixedly connected with the power part that rotational kinetic energy is provided;

Described dehydration output block and described washing output block are connected with a joggle;

Described dehydration output block is fixedly connected with the dehydration axle sleeve of washing machine;

Described washing output block is connected with the wash shaft of washing machine.

Preferably, described power part (namely hereinafter described rotary body) is rotor or belt pulley, has respectively bogie and is located at cavity in the described bogie.

Preferably, described input block is mounted in the cavity of described rotor or belt pulley and connects described rotor or belt pulley and around the eccentric bushing of described wash shaft rotation.When rotary body was rotor, described bogie was rotor rack; When rotary body was belt pulley, described bogie was the belt wheel carrier.More specifically, described rotor rack and belt wheel carrier can be integral types, also can be knockdown.

Preferably, described washing output block comprises: be set in the spur gear that described eccentric bushing is outside and be rotationally connected with it; The jockey that connects described spur gear and described wash shaft or dehydration axle sleeve.

Preferably, described dehydration output block is the ring gear that connects described dehydration axle sleeve or wash shaft, settles described spur gear in it.

Preferably, described jockey is slide block assembly, comprising: pass the crosshead shoe of described wash shaft or dehydration axle sleeve, the upper end of its lower surface and described spur gear is slidingly connected; With the positioning sliding block that the upper end of crosshead shoe is slidingly connected, its center and described wash shaft or dehydration axle sleeve are connected, thereby described spur gear and described wash shaft or the axle sleeve that dewaters are slidingly connected.

Preferably, described jockey is terminal pad, comprises the terminal pad body, and described terminal pad body and described spur gear are axis hole pin plug-in sliding connection structure.Particularly, the set-up mode that described axis hole pin plug-in is slidingly connected is: described axis hole is distributed on the terminal pad body, connects bearing pin and is arranged on the spur gear, axis hole and be connected bearing pin and carry out the plug-in mounting realization and be slidingly connected; Also can be: described axis hole be distributed on the spur gear, connects bearing pin and is arranged on the terminal pad body, axis hole and be connected bearing pin and carry out the plug-in mounting realization and be slidingly connected; Can also be: described axis hole be distributed in respectively on terminal pad body and the spur gear, carries out plug-in mounting with axis hole respectively by the connection bearing pin and realizes being slidingly connected; It is a plurality of that described axis hole and the quantity that is connected bearing pin can be, and specifically can be chosen in 4-12, most preferably, is 6-8.

Preferably, the upper end of described spur gear is provided with radially relative a pair of gear groove, and its position with described a pair of lower convex platform is corresponding.

Preferably, described reducing gear is installed on described rotor or the belt pulley, wherein: described input block comprises the input gear axle that is installed in described rotor or position, belt pulley disalignment, and connects the input gear of described input gear axle; Described washing output block is the output gear that is connected with a joggle with described input gear; Described dehydration output block is the middle driven wheel that is positioned at outside described rotor or the belt pulley and is connected with a joggle with described input gear.

Preferably, described output gear is fixedly connected with described wash shaft or dehydration axle sleeve.

Compared with prior art, drive unit of washing machine of the present utility model has advantages of following outstanding:

1) can adjust according to the variation of wash load the rotating speed of wash shaft, thereby alleviate or eliminate the damage that is washed clothing, and the burnout failure that can avoid the motor of washing machine to cause because of overload.

2) drive unit of washing machine of the present utility model is placed in deceleration device the inside of rotary body, therefore can take full advantage of the space of rotary body inside, has reduced the volume of drive unit, thereby has been beneficial to the miniaturization of washing machine;

3) spur gear in the deceleration device of the present utility model carries out rotation with ring gear generation engagement again in the eccentric bushing revolution, thereby so that wash shaft and dehydration sleeve are realized reverse rotation simultaneously, reduces the energy consumption of motor, and reduces noise;

4) the utility model adopts jockey that spur gear is connected to wash shaft or dehydrating shaft puts, so that the eccentric moment that departs from the rotary body axis that spur gear obtains when it is rotated with eccentric bushing, be converted into the moment with the rotary body axis coaxle, because the drive disk assembly that adopts is few, therefore transmission efficiency is high, compact conformation, volume is little, and installation and use is convenient;

5) the utility model rotary body that power will be provided is as one of parts of drive unit of washing machine, and rotary body can adopt rotor, also can adopt belt pulley, compacter in the structure that makes drive unit of washing machine, take up room less in, also reduce the consumption of a large amount of connectors, therefore further reduced the production cost of washing machine.

Below in conjunction with accompanying drawing the utility model is elaborated.

Description of drawings

Fig. 1 is the structural representation of the utility model the first embodiment drive unit of washing machine;

Fig. 2 is the explosive view (not shown clutch apparatus) of the deceleration device of the utility model the first embodiment;

Fig. 3 is the structural representation of the positioning sliding block of the utility model the first embodiment;

Fig. 4 is the structural representation of the crosshead shoe of the utility model the first embodiment;

Fig. 5 is the structural representation of the spur gear of the utility model the first embodiment;

Fig. 6 is the structural representation of the eccentric bushing of the utility model the first embodiment;

Fig. 7 is the structural representation of the utility model the second embodiment drive unit of washing machine;

Fig. 8 is the explosive view (not shown clutch apparatus) of the deceleration device of the utility model the second embodiment;

Fig. 9 is the structural representation of the terminal pad of the utility model the second embodiment;

Figure 10 is the right side view of terminal pad shown in Figure 9;

Figure 11 is the structural representation of the spur gear of the utility model the second embodiment;

Figure 12 is the structural representation of rotor inserts of the present utility model;

Figure 13 is the explosive view of clutch apparatus of the present utility model, dehydration axle sleeve and ring gear part;

Figure 14 is the structural representation of ring gear of the present utility model;

Figure 15 is the top view of ring gear of the present utility model;

Figure 16 is the structural representation of clutch gear ring of the present utility model;

Figure 17 is the front view of drive unit of washing machine of the present utility model;

Figure 18 is the direction of rotation schematic diagram of deceleration device of the present utility model and each part of wash shaft;

Figure 19 is the principle schematic of the utility model the 3rd embodiment drive unit of washing machine.

Description of reference numerals: 1-housing unit; The 2-stator; The 3-internal rotor; The 4-eccentric bushing; The 5-wash shaft; The 6-spur gear; The 7-ring gear; The 8-jockey; The 9-clutch apparatus; The 11-housing; The 12-electric motor end cap; 13-motor bolt; The 14-mounting disc; The 20-axle sleeve that dewaters; The 31-bogie; The 32-inner chamber; The 33-latch; The 34-rotor; 35-rotor inserts; The 351-cylinder; The 352-base; 41-eccentric bushing body; 42-the first body; 43-the second body; The 44-through hole; 411-extension limit; 40-spur gear axis; 50-wash shaft axis; 51-input gear axle; 52-the first input gear; The 53-idler gear; 54-the second input gear; The 55-output gear; The 60-external tooth; 62-gear groove; The 61-connecting shaft hole; The 63-steel ring; The 71-upper connector; Connector under the 72-; 201-axle sleeve groove; The 711-external splines; The 712-tongue; The 721-internal tooth; 722-boss with holes; The 723-reinforcement; 81-terminal pad body; The 82-through hole; The 83-connecting axle; The 84-cylinder; The 85-crosshead shoe; The 86-positioning sliding block; 851-disk body; The 852-lower convex platform; The 853-convex platform; 861-slide block body; The 862-otic placode; The 863-groove; The 100-bearing; The 200-spring; 91-clutch gear ring; The 92-solenoid; The 93-coil holder; The 94-coil retainer; The 911-internal spline; 912-magnetic conduction iron hoop; The 913-teeth groove.

The specific embodiment

Core of the present utility model is a kind of drive unit of washing machine and with the washing machine of drive unit of washing machine provided by the utility model, this drive unit of washing machine and washing machine have advantages of all that axial dimension is little, compact conformation, take up room little.

Figure 17 shows that the front view of drive unit of washing machine of the present utility model, Fig. 1, Fig. 7 are the cutaway view of two embodiment of drive unit of washing machine shown in Figure 17, such as Fig. 1, shown in Figure 7, drive unit of washing machine of the present utility model comprises: be used to provide rotational kinetic energy without the rotating shaft rotary body; Be installed in the deceleration device on the described rotary body, be used for obtaining rotational kinetic energy from the rotary body center position, and export the power that its rotating speed is equal to or less than described rotary body rotating speed; The wash shaft and the dehydration axle sleeve that connect described deceleration device, under the effect of described deceleration device outputting power, the described power that is equal to or less than described rotary body rotating speed is supplied to respectively washing and the dehydration execution unit (for example be washing execution unit impeller or agitator, the dehydration execution unit is interior bucket) of washing machine; Wherein, the dehydration axle sleeve is sheathed on that wash shaft is outside to be rotationally connected with it.

Wherein, the rotary body that is used to provide rotational kinetic energy that adopts in the utility model is rotor or belt pulley, and rotor can be the internal rotor of motor, also can be the outer rotor of motor, for the ease of understanding, in embodiment of the present utility model, be that the situation of motor internal rotor is narrated to rotary body only.But be interpreted as, those skilled in the art fully can be according to the described technical scheme of the utility model embodiment, with the motor internal rotor described in motor outer rotor or the belt pulley corresponding substitute embodiment, and, when corresponding substitute, structure of the present utility model is carried out corresponding change also do not have novelty.

The utility model can use various motors, such as synchronous motor, asynchronous machine, servomotor, PSC motor, BLDC motor etc.

The two even PTO of a kind of washing machine that the utility model provides comprise above-mentioned reducing gear, and this deceleration device has input block, dehydration output block and washing output block, wherein:

Input block and the power part that rotational kinetic energy is provided (be above-mentioned without the rotating shaft rotary body) are fixedly connected with;

The dehydration output block is fixedly connected with the dehydration axle sleeve of washing machine;

The washing output block is connected with the wash shaft of washing machine;

The washing output block is connected with described input block, makes the washing output block around the axle center revolution of described power part;

Dehydration output block and washing output block make dehydration output block and washing output block carry out respectively rotation by interacting by being connected with a joggle, thereby drive respectively wash shaft and the dehydrating shaft cover rotates.

Power part of the present utility model is rotor, or has the rotor of cavity.Input block can be mounted in the cavity of rotor and the eccentric bushing that connects rotor and rotate around wash shaft.The washing output block comprises: be set in the spur gear that described eccentric bushing is outside and be rotationally connected with it, be used for along with the rotation of eccentric bushing around described eccentric bushing rotating shaft revolution; The jockey that spur gear is connected described wash shaft or dehydration axle sleeve.The dehydration output block is the ring gear that connects dehydration axle sleeve or wash shaft, settles spur gear in it, so that spur gear produces rotation with the internal tooth engagement of ring gear during described revolution, and then makes described ring gear produce rotation.

On the other hand, the two even power output methods of a kind of washing machine provided by the utility model may further comprise the steps:

The input block of reducing gear and the power part that rotational kinetic energy is provided (and above-mentioned without the rotating shaft rotary body) are fixedly connected with;

The dehydration output block of reducing gear is fixedly connected with the dehydration axle sleeve of washing machine;

The washing output block of reducing gear is connected with the wash shaft of washing machine;

Be connected with input block by the washing output block, make the washing output block around the axle center revolution of power part;

Be connected with a joggle with the washing output block by the output block that will dewater, make dehydration output block and washing output block carry out respectively rotation by interacting, thereby drive respectively wash shaft and the dehydrating shaft cover rotates.

During the wash shaft rotation, wash shaft is delivered to described washing output block to wash load to its reaction force; The washing output block is by imposing on the wash load reaction force described dehydration output block, change the interaction of washing output block and dehydration output block, the rotational velocity of washing output block and dehydration output block is changed along with the variation of wash load.Namely, when increasing, wash load increases described dehydration output block rotational velocity, and reduce thus described washing output block rotational velocity, and when wash load reduces, reduce described dehydration output block rotational velocity, and improve thus described washing output block rotational velocity.

At the device shown in Fig. 1, Fig. 2, Fig. 7, Fig. 8 etc., power part of the present utility model is rotor, or has the rotor 3 of bogie and cavity.The input block of reducing gear is mounted in the cavity of rotor 3 and connects described bogie 31 and around the eccentric bushing 4 of wash shaft 5 rotations.The washing output block comprises: the spur gear 6 that is set in eccentric bushing 4 outsides and is rotationally connected with it is used for along with the rotation of eccentric bushing 4 around the revolution of eccentric bushing 4 rotating shafts; The jockey that spur gear 6 is connected wash shaft 5.The dehydration output block is the ring gear 7 that connects dehydration axle sleeve 20, settles spur gear 6 in it, so that spur gear 6 produces rotation with the internal tooth engagement of ring gear 7 during revolving round the sun, and then makes ring gear produce rotation.

Referring to Fig. 2, jockey of the present utility model can be slide block assembly, comprising: pass the crosshead shoe 85 of described wash shaft, the upper end of its lower surface and spur gear 6 is slidingly connected; With the positioning sliding block 86 that the upper end of crosshead shoe 85 is slidingly connected, its center and wash shaft 5 are connected, thereby spur gear 6 and wash shaft 5 are slidingly connected.Wherein, the upper end of spur gear 6 is provided with radially relative a pair of gear groove 62, and its position with a pair of lower convex platform 852 is corresponding.

Referring to Fig. 8, jockey can be to comprise: the terminal pad body 81 that passes wash shaft 5 and be connected with it, and its even circumferential is distributed with a plurality of through holes; Be placed in respectively a plurality of connecting axles 83 in each through holes of a plurality of through holes, an end of its each connecting axle is fixedly connected with spur gear 6, by a plurality of connecting axles 83 respectively with corresponding through hole sliding-contact, spur gear 6 and wash shaft 5 are slidingly connected.

In device shown in Figure 19, power part of the present utility model is rotor, input unit is installed on the rotor 3, and described input block comprises the input gear axle 51 that is installed in position, described rotor disalignment, and connects the input gear that comprises the first input gear 52 and the second input gear 54 of described input gear axle.The washing output block is the output gear 55 that the second input gear 54 with described input gear is connected with a joggle; The dehydration output block is the middle driven wheel 53 that is positioned at outside the rotor and is connected with a joggle with the first input gear 52 of input gear.And output gear 55 is fixedly connected with wash shaft 5.

In the utility model, the internal rotor of motor is by providing rotational kinetic energy around the axis rotation that is positioned at self center, be provided with the deceleration device that the output speed of internal rotor is carried out variable-speed processing in internal rotor inside, because deceleration device links to each other with internal rotor, therefore deceleration device at internal rotor in the process that axis rotates, obtained rotational kinetic energy, because the eccentric bushing that is connected with internal rotor in the deceleration device carries out eccentric rotary around the internal rotor axis, therefore other part that drives in the deceleration device also carries out eccentric rotary around the internal rotor axis, and is the power output that rotating speed is equal to or less than the internal rotor rotating speed with the power-conversion behind the eccentric rotary.Because deceleration device links to each other with wash shaft, and an end of wash shaft links to each other with the impeller (not shown) of washing machine, and the outer cover in wash shaft is provided with the dehydration axle sleeve 20 that is rotationally connected with it, the dehydration axle sleeve links to each other with the interior bucket (not shown) of washing machine, thereby under the effect of deceleration device outputting power, wash shaft is supplied to respectively corresponding execution unit with the dehydration axle sleeve with the described power that is equal to or less than the internal rotor rotating speed, and then makes the washing machine that drive unit of washing machine of the present utility model is installed finish the function of laundry.

In the utility model, shown in Figure 17,1,7, in housing unit 1 positioned inside stator 2 is arranged, be useful on the internal rotor 3 that rotational kinetic energy is provided in stator 2 positioned inside.Internal rotor of the present utility model comprises bogie 31 and is located at the cavity 32 of bogie inside, so the rotating speed of internal rotor is the rotating speed of bogie, and the rotating shaft of bogie is its symmetry axis.Wherein, deceleration device is installed in the cavity of bogie inside, and this deceleration device comprises transmission device, and transmission device comprises: connect bogie 31 and around the eccentric bushing 4 of bogie axis rotation, its under the drive of bogie with the synchronized rotation of bogie; The spur gear 6 that is set in the eccentric bushing outside and is rotationally connected with its formation, it revolves round the sun around the bogie axis along with the rotation of eccentric bushing; The ring gear 7 that connects dehydration axle sleeve 20, be mounted with spur gear in it, so that spur gear during revolving round the sun with the engagement of the internal tooth of ring gear and produce rotation, and ring gear with the process of spur gear engagement in also rotate accordingly, and give the dehydration axle sleeve with transmission of power; Wherein, spur gear links to each other with wash shaft 5 by jockey, thereby transmission of power that its rotation is produced is to wash shaft.In addition, deceleration device of the present utility model also comprises the clutch apparatus for control deceleration device output speed, it is arranged at housing unit inside, and be set in axial sliding on the outer wall of ring gear, carry out engagement connection by endwisely slipping with the latch of being located at bogie one end or break away from latch, thereby so that the rotating speed of deceleration device output is equal to or less than the rotating speed of bogie.

In the transmission device of the present utility model, by jockey spur gear is connected on the wash shaft, and jockey of the present utility model has different version, be elaborated below in conjunction with specific embodiment.

Embodiment 1

As shown in Figure 1, 2, for the jockey in the drive unit of washing machine of the present utility model be the structural representation of slide block structure.

As shown in Figure 1, the motor of the present embodiment is inner rotor motor.Wherein, housing unit comprises: the tubular shell 11 of both ends open, the electric motor end cap 12 that is connected with housing 11 bottoms, the mounting disc 14 that is positioned at the housing top and is connected by motor bolt 13 with electric motor end cap 12, and housing 11, electric motor end cap 12 and mounting disc 14 surround an inner space that is used for settling other parts such as stator 2 and internal rotor 3.

The internal rotor of the present embodiment comprises bogie 31 and is located at the cavity 32 of bogie inside, and is provided with latch 33 at the top of bogie end face.Concrete, shown in Fig. 1,12, the bogie of the present embodiment comprises the rotor 34 and the rotor inserts 35 that is positioned at rotor of tubular, its rotor inserts comprises: the cylinder 351 of both ends open, its top are provided with upwardly extending latch 33; Be positioned at the base 352 of cylinder bottom, and a base plate through holes is offered at the center of base.Cylinder in the rotor inserts and base are configured for settling the cavity 32 of deceleration device jointly, and wash shaft is passed the center of described base plate through holes, have the rotating shaft identical with wash shaft when therefore bogie rotates, namely the rotation of bogie overlaps with the rotation of wash shaft.

In the present embodiment, as shown in Figure 2, be mounted with deceleration device in the cavity of internal rotor, this deceleration device comprises transmission device and clutch apparatus, and transmission device comprises eccentric bushing 4, spur gear 6, ring gear 7 and jockey 8.

Wherein, the eccentric bushing in the transmission device is fixedly connected with bogie 31, and eccentric bushing is around the rotating shaft rotation of bogie.As shown in Figure 6, this eccentric bushing comprises and the second body of bogie coaxial line rotation and the first body that rotates with bogie off-axis line, wherein the second body can be fixedly connected with for split type with the first body, also can be that integral type is fixedly connected with, for the ease of processing or installation, preferably, as shown in Figure 2, the second body is the second body 43, the first body comprises the eccentric connector 41 that is connected with the second body top and the first body 42 that is connected with the eccentric connector top, wherein, eccentric connector 41 has with respect to the first body 42 and extends laterally formed extension limit, and be provided with in the second body 43 be used to the eccentric bushing through hole that passes wash shaft, this eccentric bushing through hole extends upward and runs through eccentric connector and the first body.

When the processing eccentric bushing, the first body, eccentric connector and the second body can adopt integrated mode, perhaps adopting the mode such as welding to connect is integrated, and, adding man-hour, should make between the center line of the center line of the first body and the second body to have certain eccentric throw, this eccentric throw can be taken as the poor of the radius of spur gear and ring gear radius.

In the present embodiment, eccentric bushing 4 is fixedly connected with for ease of transmitting being rigidly connected of rotation torque with 31 of bogies, is adding man-hour, and eccentric bushing and bogie can adopt integral type to be connected, also can adopt split type being connected, as connecting by modes such as screw, welding.Preferred concrete mode is: the rotor 34 of tubular adopts metal material, eccentric bushing 4 adopts metal material, rotor 34, the eccentric bushing 4 of tubular are put into injection mold or die casting, directly through injection moulding or die cast rotor and eccentric bushing are installed on the rotor inserts 35; More preferably, the outside on the extension limit of eccentric connector 41 can be provided with several depressions (among Fig. 2 being 4) or chimb in the eccentric bushing 4, thereby the adhesion when increasing eccentric bushing 4 with bogie 31 injection mouldings or die casting is easy to rigidly fix the needs that are connected between eccentric bushing 4 and the bogie 31.

When bogie rotates, be connected in also thereupon coaxial, synchronized rotation of eccentric bushing in its rotor inserts base plate through holes by the second body, thereby drive with eccentric bushing in the spur gear that is rotationally connected of the first body 42 also rotate accordingly thereupon.

As shown in Figure 5, the spur gear 6 of the present embodiment comprise steel ring 63 and be positioned at the steel ring outside and with the external tooth 60 of its integrated injection molding, and the upper end of spur gear also is provided with a pair of radially relative groove 62.Wherein, the first body in steel ring and the eccentric bushing is rotationally connected, concrete mode is: the inner ring of the outer wall of the first body 42 and oiliness bearing 100 is connected in the interference mode, and the upper end on eccentric connector extension limit is connected with the bottom contact on oiliness bearing 100 extension limits, and the outer ring of oiliness bearing 100 is connected with the gap fiting mode contact with the inwall of spur gear; Perhaps, also can adopt the outer wall of the first body 42 is that gap fiting mode is connected with the inner ring of oiliness bearing 100, and the upper end on eccentric connector extension limit is connected with the bottom contact on oiliness bearing 100 extension limits, and the outer ring of oiliness bearing 100 is connected with the interference fit contact with the inwall of spur gear.

Natch, be connected for realizing that eccentric bushing 4 relatively rotates with spur gear, also can adopt following concrete mode: eccentric bushing 4 self structure are improved, as adopt powdered metallurgical material, so that eccentric bushing 4 itself possesses the function of oiliness bearing 100, avoid the independent use of oiliness bearing 100, thereby steel ring and eccentric bushing with the oiliness bearing function own are rotationally connected.

Preferably, can be provided with some material reducing grooves in the inside of the first body 42 to reduce manufacturing cost, also can in the material reducing groove, add simultaneously an amount of material that plays lubricating function, such as lubricating oil, oil cotton, increase the service life of eccentric bushing.

When eccentric bushing rotates, under driving, it carries out the revolution of identical direction of rotation with it with the spur gear that the first body on it is rotationally connected, and because the first body in the eccentric bushing and the centreline spacing of the second body have certain eccentric throw, and the rotation of the first body and bogie dead in line, therefore when spur gear revolves round the sun, be actually and carrying out eccentric rotation around the bogie axis.

Spur gear is in the revolution process, because therefore its external tooth and ring gear engagement can pass to ring gear with its rotary power.The ring gear of the present embodiment is metal or plastic fastening, more preferably, in order to save manufacturing cost, may be selected to be integrated injection molding spare, and this metal or plastic fastening comprise upper connector 71 and be arranged on its lower end and connected lower connector 72.As shown in figure 14, upper connector is housing, and its outer wall is provided with the external splines 711 along its axial distribution, and its inwall is provided with a plurality of tongues 712 along its axial distribution; And lower connector 72 is tubular structure, its top and upper connector are connected, wall is embedded with internal tooth 721 within it, and also is provided with a plurality of reinforcements 723 in the junction of itself and upper connector, and also is provided with a plurality of boss with holes 722 for settling spring 200 723 of adjacent reinforcements.

As shown in figure 13, a plurality of tongues in the upper connector are complementary with a plurality of axle sleeve grooves 201 that are located at dehydration axle sleeve outer wall, thereby ring gear and dehydration axle sleeve are connected to one, in addition, also can adopt metal connecting piece is realized being rigidly connected with the dehydration axle sleeve by laser weld or other modes, in the present embodiment, the internal tooth 721 that is positioned at lower connector 72 inwalls can adopt plastics to make, and also can adopt metal to make.

When spur gear when revolving round the sun (namely carrying out eccentric rotary around the bogie axis), its external tooth can mesh with the internal tooth of ring gear, thereby under the interaction force of gear teeth meshing, so that spur gear produces rotation, and the direction of rotation of this moment and the opposite direction of its revolution, simultaneously because there is the poor relation of tooth in the interior between cog of its external tooth and ring gear, therefore so that spur gear can produce speed difference when rotation and revolution, be the speed of the time rotational speed when being lower than revolution, thereby make the rotating speed of its output be lower than the rotating speed of bogie.Accordingly, owing to having interaction force between ring gear and spur gear, therefore so that ring gear also can rotate at the spur gear time rotational, just the direction of rotation of ring gear is opposite with the sense of rotation of spur gear at this moment, that is to say, this moment, the direction of rotation of ring gear was identical with the direction of rotation of bogie, and the rotating speed of ring gear also is lower than the rotating speed of bogie at this moment.

To sum up, spur gear the eccentric bushing of rotation and with comprehensive function power of its ring gear by gear teeth meshing under, revolve round the sun simultaneously and rotation, and the direction of its rotation and revolution opposite direction, the rotating speed of time rotational is lower than the rotating speed of bogie; And ring gear is also under the effect of respective action power, carries out opposite with the spur gear sense of rotation and is lower than rotatablely moving of bogie rotating speed.

When spur gear in low speed rotation process, its by slide block structure with transmission of power to wash shaft.The slide block structure of the present embodiment comprises: pass the crosshead shoe 85 of wash shaft, the upper end of its lower surface and spur gear is slidingly connected; With the positioning sliding block 86 that the upper end of crosshead shoe is slidingly connected, its center and wash shaft are connected.Wherein, as shown in Figure 4, crosshead shoe comprises: the disk body 851 of wash shaft is passed at the center; Be arranged at respectively disk body lower surface and radially relative a pair of lower convex platform 852; Be arranged at respectively disk body upper end and radially relative a pair of convex platform 853, its extended line becomes the space cross distribution with a pair of lower convex platform extended line.As shown in Figure 3, positioning sliding block comprises: tubular slide block body 861, and its center and wash shaft are connected; Be located at slide block body both sides and along its radially opposing a pair of otic placode 862 that stretches out, be respectively equipped with the groove 863 that is complementary with a pair of convex platform on it.Preferably, the upper end of spur gear is provided with radially relative a pair of gear groove, and its position with a pair of lower convex platform is corresponding.

Concrete, as shown in Figure 5, in the present embodiment, in a pair of gear groove 62 of spur gear upper end, settling respectively a pair of lower convex platform in the crosshead shoe 85, and a pair of lower convex platform can slide in a pair of gear groove corresponding with its position respectively; A pair of convex platform in the crosshead shoe 85 is placed in respectively a pair of groove 863 that is positioned at the positioning sliding block lower surface, and a pair of convex platform can slide in a pair of groove respectively; The slide block body center of positioning sliding block is fixedly connected with wash shaft, thus so that the central lines of the center line of positioning sliding block and wash shaft.

When spur gear low speed time rotational, a pair of gear groove 62 on it is synchronized, rotating Vortex thereupon, thereby drive a pair of lower convex platform 852 that is placed in a pair of gear groove rotates thereupon, the i.e. whole and then spur gear of crosshead shoe this moment rotation, under the effect of centrifugal force, a pair of lower convex platform on the crosshead shoe and a pair of convex platform radially slide in a pair of gear groove and a pair of groove 863 respectively, and the process of sliding is by the motion process of spur gear axis 40 directions towards wash shaft axis 50 directions.Because a pair of convex platform in the crosshead shoe slides and is placed in a pair of groove 863 of positioning sliding block, drive the groove rotation when therefore convex platform rotates, namely drive the positioning sliding block rotation, because center and the wash shaft of positioning sliding block are connected, thus when positioning sliding block rotates the drive wash shaft with its carry out with spur gear in the same way, synchronized rotatablely moving.

Can be found out by Fig. 2 and Figure 18, when spur gear rotates around the wash shaft eccentric axis, pass through slide block structure, the power that the spur gear time rotational can be produced around 40 rotations of spur gear axis, be converted into wash shaft around the power of wash shaft axis 50 (being the bogie axis) rotation, be about to spur gear and be converted into output with the wash shaft axis coaxle around the output of wash shaft eccentric axis rotation.

Because washing machine has different washing operating modes when work, thereby need to be according to the different needs output speed of regulating deceleration device of washing operating mode, as when the washing, the output speed that needs deceleration device is low speed, and when dehydration, need the output speed of deceleration device to be high speed.Therefore in the present embodiment, deceleration device also comprises a clutch apparatus, this clutch apparatus is arranged in the internal cavities of housing unit formation, and be set in axial sliding on the outer wall of ring gear, its by be located at latch 33 engagement connections on bogie one end face or break away from latch, thereby so that deceleration device carries out high speed or low-speed motion.

Concrete, the clutch device in the present embodiment is set to electromagnetic clutch device, and it comprises solenoid mechanism and clutch gear ring 91, and solenoid mechanism is placed in the outside of clutch gear ring.

Wherein, solenoid mechanism comprises solenoid 92, coil holder 93 and coil retainer 94.Coil retainer is fixedly mounted in the mounting disc 14 in the housing unit, and coil holder is installed in the coil retainer, and the solenoid winding is on coil holder.

Wherein, clutch gear ring 91 comprises upper end connecting portion and lower end connecting portion, and the upper end connecting portion can be fixedly connected with for split type with the lower end connecting portion, also can be that integral type is fixedly connected with.For the ease of processing or installation, preferably, as shown in figure 16, the upper end connecting portion is tubular structure, its inwall is provided with internal spline 911, and its outer wall is established the magnetic conduction iron hoop 912 with its integrated injection molding, and the external splines 711 on internal spline 911 and the annular gear outer-wall is slidingly matched, and the magnetic conduction iron hoop matches with solenoid, can be away from solenoid under the magneticaction of solenoid; The bottom end face of lower end connecting portion is provided with a plurality of double wedges spaced apart, form teeth groove 913 between each adjacent double wedge, and this teeth groove 913 is complementary with the latch 33 of being located on bogie one end face, and preferably, the position is provided with some material reducing grooves to reduce manufacturing cost around the connecting portion of lower end.

When solenoid is switched on, under the effect of solenoid magnetic field repulsive force, the magnetic conduction iron hoop is moved downward so that away from solenoid, and the upper end connecting portion of magnetic conduction iron hoop and clutch gear ring is connected, thereby under the drive of magnetic conduction iron hoop, so that whole clutch gear ring 91 is along the annular gear outer-wall down sliding and arrive its second position location, the teeth groove of clutch this moment gear ring lower end connecting portion and the latch on the bogie are connected with a joggle, therefore, ring gear obtains the rotating speed identical with bogie, and makes transmission device be in locking state; On the contrary, when solenoid cut off the power supply, the clutch gear ring was under the effect of the restoring force that is installed on the ring gear upper spring, along the annular gear outer-wall upward sliding and arrive its first position location, the teeth groove of lower end connecting portion is separated with latch on the bogie, and then make transmission device enter duty.

The below specifically narrates the course of work of washing machine in dehydration and washing operating mode situation with the present embodiment drive unit of washing machine.

When washings is dewatered, the at this moment solenoid energising in the clutch apparatus, the magnetic conduction iron hoop 912 of solenoid and clutch gear ring arranged outside interacts and can form the magnetic circuit of a closure, this moment the clutch gear ring under the effect of electromagnetic repulsive force along annular gear outer-wall down sliding (in such as Fig. 1 downward direction), and the clutch gear ring will be arranged on the spring-compressed in the ring gear in sliding process, and the latch engagement connection that makes a plurality of teeth groove of being arranged on clutch gear ring lower end connecting portion and bogie one end together, thereby so that clutch gear ring and bogie connect as one, and then dehydration axle sleeve and bogie are connected as one, and make the dehydration axle sleeve obtain the rotating speed identical with bogie.Because the rotary inertia of the interior bucket that is connected with the dehydration axle sleeve is greater than the rotary inertia of the impeller that is connected with wash shaft, so spur gear and ring gear in the transmission device that is connected by wash shaft and impeller are in locking state, so that transmission device is in locking state under the rotary inertia greatly at interior bucket, therefore whole transmission device is along with bogie runs up together, and then drive the wash shaft be connected with it and also carry out High Rotation Speed in company with bogie, thereby the impeller high speed rotating that interior barrel of drive being connected with the axle sleeve that dewaters is connected with wash shaft is dewatered to washings.

When washings is washed, solenoid outage this moment, the closed magnetic circuit that forms between solenoid and the clutch gear ring disappears, the clutch gear ring no longer is subject to the effect of electromagnetic repulsive force, therefore under the effect of spring restoring force, the clutch gear ring moves up along annular gear outer-wall, thereby the latch of a plurality of teeth groove of being arranged on clutch gear ring lower end connecting portion and bogie one end is broken away from, and then makes the transmission device in the deceleration device enter duty:

As shown in figure 18, when bogie (is the wash shaft axis 50 shown in Figure 18 along counter clockwise direction shown in Figure 180 around the bogie axis, for convenience, below all this axis is referred to as the wash shaft axis) during High Rotation Speed, drive and carry out High Rotation Speed with the speed identical with it around the wash shaft axis with its eccentric bushing that is connected 4 in the counterclockwise direction with it, and the High Rotation Speed of eccentric bushing drives spur gear carries out off-centre around the wash shaft axis high speed revolution, when spur gear in high speed revolution process, its external tooth is meshed with the internal tooth of ring gear and produces mutual active force, thereby so that spur gear carries out rotation around spur gear axis 40, and the opposite direction of the direction of spur gear rotation and eccentric bushing rotation, as shown in Figure 18, this moment, the direction of rotation of spur gear was clockwise, and its rotating speed is lower than the rotating speed of bogie.

Mesh and produce in the process of rotation at spur gear and ring gear, ring gear is rotated under its effect, because the internal tooth of ring gear and the outer between cog of spur gear exist tooth poor, therefore ring gear carries out low speed rotation, counter clockwise direction as shown in Figure 18 along the direction opposite with the spur gear direction of rotation.And be accompanied by the spur gear rotation, also have the slide block structure in the transmission device.When spur gear to be lower than the bogie rotating speed when the spur gear axis carries out clockwise rotation, spur gear by establish with its on a pair of gear groove 62 transmission of power is placed in a pair of lower convex platform 852 in a pair of gear groove to slip, thereby so that crosshead shoe is along with spur gear carries out clockwise rotation, and then drive is carried out clockwise rotation by the positioning sliding block that a pair of convex platform on a pair of groove 863 and the crosshead shoe is slidingly connected, because center and the wash shaft of positioning sliding block are connected, carry out clockwise rotation thereby when positioning sliding block turns clockwise, drive wash shaft with it, shown in arrow the most inboard among Figure 18.

As shown in Figure 18, in the washing operating mode, when the bogie High Rotation Speed, transmission device by the present embodiment, can make the dehydration sleeve that is connected with ring gear and the impeller that is connected with wash shaft obtain the rightabout low-speed motion that is lower than the bogie rotating speed, need the difficult problem that sleeve is fixed and need to consume mass energy of dewatering when washing thereby solved in the prior art.

The present embodiment is by being placed in deceleration device internal rotor inside, thereby effectively utilized the inner space of internal rotor, reduced the volume of washing machine, be beneficial to the miniaturization production of washing machine, and, in the present embodiment, adopt slide block structure that spur gear is connected with wash shaft, thereby the off-centre around the wash shaft axis of spur gear is exported the output that is converted into the wash shaft axis coaxle, avoid deceleration device to produce in the course of the work unnecessary vibration.

Embodiment 2

Shown in Fig. 7,8, adopt the structural representation of drive unit of the washing machine of terminal pad structure for the utility model.

As shown in Figure 7, the motor of the present embodiment also is inner rotor motor.Wherein, in housing unit, be mounted with the internal rotor with cavity, and in the cavity of internal rotor, be mounted with deceleration device, this deceleration device comprises transmission device and clutch apparatus, wherein, transmission device comprises eccentric bushing 4, spur gear 6, ring gear 7 and jockey 8, and in the present embodiment, what jockey adopted is the terminal pad structure.

In the present embodiment, the eccentric bushing in housing unit, clutch apparatus and the transmission device, ring gear are all identical with embodiment 1, no longer repeat at this, and the below only describes with the structure of the spur gear that links to each other with jockey accordingly to jockey.

As shown in figure 11, the spur gear 6 in the present embodiment comprise steel ring 63 and be positioned at the steel ring outside and with the external tooth 60 of its integrated injection molding, and be useful on the connecting shaft hole 61 of settling a plurality of connecting axles 83 at the circumference uniform distribution of steel ring.Wherein, the first body in steel ring and the eccentric bushing is rotationally connected, and concrete connected mode is identical with embodiment 1, no longer repeats at this.

Terminal pad structure in the present embodiment comprises terminal pad and drives a plurality of connecting axles that terminal pad rotates with the terminal pad sliding-contact and by frictional force.Concrete, shown in Fig. 8,9,10, terminal pad has the terminal pad body 81 that is plate-like, its center is passed wash shaft and is connected with wash shaft, for strengthen with wash shaft between be connected, can set firmly a cylinder 84 at middle part, the upper end of terminal pad body, profile of tooth and wash shaft by the cylinder inner wall setting are connected.During fabrication, terminal pad body and cylinder are one-body molded, perhaps adopt the mode of welding to connect and are integrated.Even circumferential at the terminal pad body is distributed with a plurality of through holes 82, and a plurality of connecting axle is placed in respectively in each through hole and with its sliding-contact.Concrete, an end of each connecting axle is placed in the through hole of terminal pad body, and slides along the inwall of through hole, and the other end fixed in position of each connecting axle is in a connecting shaft hole of spur gear.In the present embodiment, the through hole on the terminal pad body and the quantity of connecting axle are six, and the internal diameter of through hole is greater than the external diameter of connecting axle.When mounted, first the described other end of six connecting axles is distinguished fixed in position in six connecting shaft holes of spur gear, end with six connecting axles is placed in respectively in six through holes of terminal pad body again, the outer surface of guaranteeing simultaneously six connecting axles respectively and the inwall of six through holes corresponding with its position tangent.

Transmission device in the present embodiment is to transmit by the rotary power of following motion with internal rotor.

When the solenoid in the clutch apparatus is switched on, washing machine enters dewatering state: the magnetic conduction iron hoop 912 of solenoid and clutch gear ring arranged outside interacts and can form the magnetic circuit of a closure at this moment, this moment the clutch gear ring under the effect of electromagnetic repulsive force along annular gear outer-wall down sliding (in such as Fig. 1 downward direction), and the clutch gear ring will be arranged on the spring-compressed in the ring gear in sliding process, and the latch engagement connection that makes a plurality of teeth groove of being arranged on clutch gear ring lower end connecting portion and bogie one end together, thereby so that clutch gear ring and bogie connect as one, and then dehydration axle sleeve and bogie are connected as one, and make the dehydration axle sleeve obtain the rotating speed identical with bogie.Because the rotary inertia of the interior bucket that is connected with the dehydration axle sleeve is greater than the rotary inertia of the impeller that is connected with wash shaft, so spur gear and ring gear in the transmission device that is connected by wash shaft and impeller are in locking state, so that transmission device is in locking state under the rotary inertia greatly at interior bucket, therefore whole transmission device is along with bogie runs up together, and then drive the wash shaft be connected with it and also carry out High Rotation Speed in company with bogie, thereby the impeller high speed rotating that interior barrel of drive being connected with the axle sleeve that dewaters is connected with wash shaft is dewatered to washings.

When the solenoid in the clutch apparatus cuts off the power supply, washing machine enters the washing state: at this moment, the closed magnetic circuit that forms between solenoid and the clutch gear ring disappears, the clutch gear ring no longer is subject to the effect of electromagnetic repulsive force, therefore under the effect of spring restoring force, the clutch gear ring moves up along annular gear outer-wall, thereby the latch of a plurality of teeth groove of being arranged on clutch gear ring lower end connecting portion and bogie one end is broken away from, and then makes the transmission device in the deceleration device enter following duty:

Mesh and produce in the process of rotation at spur gear and ring gear, ring gear is rotated under its effect, because the internal tooth of ring gear and the outer between cog of spur gear exist tooth poor, therefore ring gear carries out low speed rotation, counter clockwise direction as shown in Figure 18 along the direction opposite with the spur gear direction of rotation.And be accompanied by the spur gear rotation, also has the terminal pad structure in the transmission device, its rotation along with spur gear is rotated accordingly, and drive wash shaft carry out synchronized with spur gear, with the rotation of direction of rotation, and, make spur gear around the off-centre output that the rotation of wash shaft eccentric axis produces, be converted into along the output of wash shaft axis direction.

Concrete, spur gear is in the process of eccentric rotary, be packed in six connecting shaft holes of spur gear six connecting axles also with its synchronous rotary, because the other end of six connecting axles is against on the inwall of six through holes of terminal pad body and moves in a circle on the wall within it, therefore six connecting axles jointly promote the terminal pad body and make the terminal pad body along with the rotation of spur gear synchronous rotary, and owing to cylinder and the wash shaft of terminal pad body upper end is connected, therefore when the terminal pad body rotates, can drive thereupon synchronous rotary of wash shaft, thereby the output that departs from the wash shaft axis direction that has produced when having realized the spur gear eccentric rotary is converted into and the output in the same way of wash shaft axis.

Other involved parts are all identical with structure among the embodiment 1 in the present embodiment, and operation principle is also identical, no longer repeats at this.

In drive unit of washing machine of the present utility model, for axial float or the displacement that prevents wash shaft, can install a plurality of jump rings and other identical functions parts additional in the suitable position of wash shaft or dehydration axle sleeve; For the ease of installing and load-bearing, can install in the suitable position of wash shaft pad and other identical functions parts additional; For normal delivery and the installation of satisfying drive connection of the present invention, can a plurality of oiliness bearings and a plurality of ball bearing be set at different parts, as between wash shaft and dehydration axle sleeve, a plurality of oiliness bearings being set, between ring gear and dehydration axle sleeve, between mounting disc and the dehydration axle sleeve and between electric motor end cap and the wash shaft a plurality of ball bearings are set, more specifically, described ball bearing can be deep groove ball bearing.Preferably, between the ball bearing between electric motor end cap and the wash shaft and wash shaft, can be provided for playing the lining of oiliness bearing function.In order to prevent that washings from entering in deceleration input block and deceleration output block and the motor along wash shaft, dehydrating shaft cover and mounting disc, between wash shaft and dehydration axle sleeve, little water seal is set, between dehydration axle sleeve and mounting disc, large water seal is set.Preferably, in order to realize the damping noise abatement when working, between each build-up member, install the beam that plastic material or elastomeric material are prepared from additional, and under the condition that satisfies installation strength or correlation function, housing unit is adopted casting aluminium material, or adopt plastics to be prepared from ring gear.

Because each part such as above-described jump ring, pad, oiliness bearing, ball bearing, lining, large water seal, little water seal and damping noise abatement part is those skilled in the art's customary means, any change of therefore structurally making for above part comes novels, anecdotes, etc. to be interpreted as not possessing novelty with respect to this patent.

Drive unit except the washing machine described in above-mentioned two embodiment, the utility model also provides a kind of washing machine, it comprises the drive unit of any washing machine among embodiment 1 or the embodiment 2, adopt the washing machine of any drive unit among above-mentioned two embodiment, its compact conformation, volume is little, is convenient to the miniaturization production of product.

Although above the utility model has been done detailed description; but the utility model is not limited to this; those skilled in the art can make amendment according to principle of the present utility model; therefore, all various modifications of carrying out according to principle of the present utility model all should be understood to fall into protection domain of the present utility model.

Claims

1. the two even PTO of washing machine comprise the reducing gear that has input block, dewaters output block and washing output block, it is characterized in that:

2. device according to claim 1 is characterized in that, described power part is rotor or belt pulley, has respectively bogie and is located at the interior cavity of described bogie.

3. device according to claim 2 is characterized in that, described input block is mounted in the described cavity and connects described rotor or belt pulley and around the eccentric bushing of described wash shaft rotation.

4. device according to claim 3 is characterized in that, described washing output block comprises:

Be set in the spur gear that described eccentric bushing is outside and be rotationally connected with it;

The jockey that connects described spur gear and described wash shaft or dehydration axle sleeve.

5. according to claim 3 or 4 described devices, it is characterized in that, described dehydration output block is the ring gear that connects described dehydration axle sleeve or wash shaft, settles described spur gear in it.

6. device according to claim 4 is characterized in that, described jockey is slide block assembly, comprising:

Pass the crosshead shoe of described wash shaft or dehydration axle sleeve, the upper end of its lower surface and described spur gear is slidingly connected;

With the positioning sliding block that the upper end of crosshead shoe is slidingly connected, its center and described wash shaft or dehydration axle sleeve are connected, thereby described spur gear and described wash shaft or the axle sleeve that dewaters are slidingly connected.

7. device according to claim 4 is characterized in that, described jockey comprises the terminal pad body, and described terminal pad body and described spur gear are that axis hole pin plug-in is slidingly connected.

8. device according to claim 4 is characterized in that, the upper end of described spur gear is provided with radially relative a pair of gear groove, and its position with described a pair of lower convex platform is corresponding.

9. device according to claim 2 is characterized in that, described reducing gear is installed on described rotor or the belt pulley, wherein:

Described input block comprises the input gear axle that is installed in described rotor or position, belt pulley disalignment, and connects the input gear of described input gear axle;

Described washing output block is the output gear that is connected with a joggle with described input gear;

Described dehydration output block is the middle driven wheel that is positioned at outside described rotor or the belt pulley and is connected with a joggle with described input gear.

10. device according to claim 9 is characterized in that, described output gear is fixedly connected with described wash shaft or dehydration axle sleeve.