CN1037182A

CN1037182A - Rinsing maching

Info

Publication number: CN1037182A
Application number: CN89102316A
Authority: CN
Inventors: 太田文夫
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 1988-04-22
Filing date: 1989-04-12
Publication date: 1989-11-15
Anticipated expiration: 2004-04-12
Also published as: KR930007148Y1; KR900016536A; JPH01270896A; CN1024423C; MY104988A

Abstract

The present invention is relevant rinsing maching deceleration device, and it reduces motor rotary speed, and passes to agitator; The gear that constitutes deceleration device all is a helical gear, even motor with the short period rotating, does not collide between the tooth of deceleration device yet, can reduce operating sound, improves durability simultaneously.

Description

Rinsing maching

The present invention is about being reduced the rinsing maching of back transmission agitator by motor rotary speed.

In recent years, the development trend of rinsing maching is a high capacity, and the agitator of agitator treating thing for preventing to twine mutually between the washings, just shortens the returing cycle of agitator also along with maximization.

With Fig. 5 this rinsing maching that has earlier is described.Its structure as shown in Figure 5, in the rinsing maching main body 1,, in water vat 2, be provided with washing and the dual-purpose cylinder 5(of dehydration) to call inner casing in the following text with suspension rod 3 water vat 2 that flexibly plays, a plurality of dewatering holes 4 are arranged on the sidewall of inner casing 5, be provided with agitator 6 in the bottom of inner casing 5, agitator 6 is free to rotate in cylinder, and it is contained on the output shaft 8 of reduction box 7, reduction box 7 is by belt 10, the rotation of motor 9 is passed to deceleration device in the reduction box 7, after slowing down and improving the torque of motor 9, pass to agitator 6.Particularly along with the increase of washing capacity, the driving torque of agitator 6 also increases, and the load on the deceleration device also increases.Also transmitted by motor 9 because of the rotation of agitator 6, so be provided with control device 9a, the rotation with control motor 9 makes agitator 6 with the short period rotating.

Example with Fig. 6 illustrates deceleration device below.As shown in Figure 6, the rotation that power shaft 11 transmits motor 9, the termination of power shaft 11 is provided with centre wheel 12, the cylindrical of centre wheel 12 is provided with the planetary gear 13 that is engaged with, and it and centre wheel 12 are enclosed in the cylinder 14 together, and the inner headed face of cylinder 14 is made internal tooth, the 15th, last plectane, axle 16 is housed on the plate, and its supporting planetary gear 13 rotates freely, and agitator 6 is contained on the output shaft 17 that transmits revolving force.Planetary gear 13 also is clipped between plectane 15 and the following plectane 18, and following plectane 18 is fixed in the plectane 15 following outstanding supportings 19.

The following describes its action.When washing with short period rotating agitator 6, motor 9 carries out the short period rotating and drives.This rotation, be delivered to by belt 10 on the power shaft 11 of the deceleration device in the reduction box 7, so, planetary gear 13 with centre wheel 12 engagements, with centre wheel 12 is that rotate at the center, and the last plectane 15 that planetary gear 13 is housed also rotates, and, the rotating speed that has reduced passes to output shaft 17, makes agitator 6 rotatings.

But its operating sound when particularly wash night, just forms the problem of noise up to 45 decibels when the rinsing maching with said structure washs.

Tracing it to its cause, is that the sound of deceleration device generation is the highest, therefore, if reduce the sound of this deceleration device, can reduce operating sound greatly.Describe the sound of deceleration device below again in detail.As shown in Figure 7, tooth A of planetary gear 13 and the engagement of the internal tooth of cylinder 14 (among the figure a), planetary gear 13 is rotated by the direction of arrow B by this state, the tooth of planetary gear 13 just becomes the state (b among the figure) that breaks away from the internal tooth of cylinder 14, continue again by the direction of arrow B rotate the tooth C adjacent with tooth A just and the internal tooth of cylinder 14 mesh (C among the figure).At this moment, tooth C and internal tooth collide, and send bigger sound.Particularly carry out rotating with the short period, be to repeat just to change, stop, reversing, drive with stopping agitator the short time, and from stopping to rotating the time, the impulsive contact force maximum of the internal tooth of the tooth of planetary gear 13 and cylinder 14, this maximum number of times that collides increases, collide sound and also increase, so that the sound that deceleration device produces increases.And short because of the returing cycle of agitator, the collision number of times that between cog is big increases, so the durability of deceleration device also is a problem.

Based on the problems referred to above, when the objective of the invention is to reduce the rinsing maching operating sound, improve the durability of deceleration device.

For achieving the above object, rinsing maching of the present invention is provided with the control device of agitator, motor, deceleration device, control revolution.Agitator is located in the cylinder bottom, rotates freely; Motor is the drive source of agitator; Deceleration device is in order to reducing motor rotary speed, and passes to agitator; Control device and makes agitator with the short period rotating in order to the control motor rotary speed; Above-mentioned deceleration device is made of a plurality of gears, and all is helical gear.

In the said structure, be continuously the helical gear of engagement because deceleration device uses, so, even with short period driving agitator, do not collide between the tooth in the deceleration device yet, can reduce operating sound, simultaneously, increase the driving moment of agitator, also can improve the durability of deceleration device.

Adopt the present invention, following effect arranged:

When (1) deceleration device drove the agitator rotating with the short period, running noise was extremely low.Therefore, extremely useful for increasing the rinsing maching running at night of getting up in recent years.

(2) because of not colliding between the tooth, can improve the durability of deceleration device, be best when particularly big moment and short period ground rotating agitator.

(3) even making washing tank be subject to deceleration device shake , the structure of rinsing maching scratches the old vast angry myna  tip kind of the lame Zhuang brocade father's cap of postscript Yu centipede eyebrow frequently.  is pounded portion's moisture in the soil enlightening value and is carried the guanidine bamboo mat on the back

Fig. 1 is the decomposition axonometric drawing of the rinsing maching deceleration device of one of example of the present invention;

Fig. 2 is the key diagram of the gears engaged of this deceleration device;

Fig. 3 is the sectional drawing of the deceleration device of other example of the present invention;

Fig. 4 is the decomposition axonometric drawing of Fig. 3;

Fig. 5 is the sectional drawing that rinsing maching is arranged earlier;

Fig. 6 is the decomposition axonometric drawing that deceleration device is arranged earlier;

Fig. 7 is the gears engaged figure of deceleration device shown in Figure 6.

With Fig. 1 and Fig. 2 an example of the present invention is described below.Part identical with rinsing maching is arranged earlier among the figure marks same sequence number, and omits detailed description, because of deceleration device of the present invention has its characteristics, so the structure of main explanation deceleration device.

As shown in Figure 1, transmit the termination of the power shaft 11 of revolution, be provided with the centre wheel 20 of helical teeth, on the cylindrical of centre wheel 20, be furnished with helical teeth planetary gear 21 with centre wheel 20 engagements.On the cylindrical of planetary gear 21, be provided with cylinder 22, on the inner headed face of cylinder 22, the internal tooth (helical gear) that meshes with planetary gear 21 is arranged, planetary gear 21 is the center rotation with centre wheel 20.

The engagement of bright said gear is described with Fig. 2 again.Among Fig. 2 (a), the internal tooth of planetary gear 21 and cylinder 22, with State engagement, i.e. during the I point gearing of the E tooth of planetary gear 21 and internal tooth, the F tooth of planetary gear 21 is because be helical teeth, so also mesh on the H of internal tooth point.Planetary gear 21 is pressed the direction of arrow D and is rotated, engagement on the J of internal tooth point.Planetary gear 21 continues to press the direction rotation of arrow D, shown in Fig. 2 (b), The moment, with K, L point gearing;

The moment, with the M point gearing, the tooth of planetary gear 21 and internal tooth keep the state that meshes always, have the engagement continuity.

The action of deceleration device when the following describes washing.For making agitator, so the order of motor just to change, stop, reversing, to stop repeatedly to turn round with the short period rotating.The rotation of motor, the power shaft 11 by deceleration device passes to centre wheel 20 and planetary gear 21, passes to the output shaft 17 that is contained on the plectane 15 again, because of last plectane 15 and planetary gear 21 rotate together.And because the engagement of centre wheel 20 and planetary gear 21, and the engagement of planetary gear 21 and cylinder 22 internal tooths has continuity, so the collision of between cog can prevent that power shaft 11 is from stopping to turning round the time.Therefore, even agitator repeated to stop, turning round with the short period, the sound that deceleration device takes place also can reduce greatly, and 45 decibels of can beforely have of the operating sound of rinsing maching drop to 41 decibels.

With Fig. 3 and Fig. 4 other example of the present invention is described below.As shown in the figure, be provided with agitator 24 in the bottom of washing tank 23, agitator 24 is contained on the output shaft 26 of deceleration device 25.Installing plate 27 usefulness screws 28 are fixed on the top of deceleration device 25, and are fixed on screw 29 outside the bottom of washing tank 23.In the lower end of output shaft 26, helical teeth internal gear 30 is housed, the lower end of output shaft 26 and supporting with clutch shaft bearing 32, bearing 32 is located at the center of round-ended cylinder cover 31, second bearing 33 in addition in the bottom that round-ended cylinder cover 31 is arranged, it and clutch shaft bearing 32 off-centre.Second bearing, 33 supporting power shafts 34, the helical gear 35 and the internal gear 30 that are contained in power shaft 34 upper ends mesh.Give prominence to the bottom of the power shaft 34 below cylindrical cap 31, also adorning belt pulley 37, hang with belt 36 on the belt pulley 37, in order to transmit the rotation of motor.

The deceleration device 25 of said structure by belt pulley 37, passes to power shaft 34 to the rotation of motor, and gear 35 is rotated.Because the rotation of gear 35, internal gear 30 rotates, reduced the rotating speed from power shaft 34, output shaft 26 obtains the rotation of big torque, makes agitator 24 rotations with this rotatory force, in 25 li in this deceleration device, also because of adopting helical gear, and make gear meshing have continuity, so prevent the collision of tooth, and when reducing noise, the vibrations of deceleration device 25 itself also can be inhibited.Therefore, promptly use installing plate 27 that deceleration device 25 directly is fixed on the washing tank 23, also can prevent the vibrations of washing tank 23,, thereby further reduced noise although its structure makes washing tank be subject to the influence of deceleration device 25 vibrations.

Claims

1, rinsing maching of the present invention has following each several part: rotation agitator freely in being located at the bottom of the washing tank; Drive source-the motor of this agitator; The deceleration device that passes to above-mentioned agitator after the motor rotary speed reduction; Control said motor rotating speed, and make the control device of above-mentioned agitator with the short period rotating, above-mentioned deceleration device is made of a plurality of gears, and all is helical gear.