CN102454088A

CN102454088A - Drum-type washing machine

Info

Publication number: CN102454088A
Application number: CN2011103178572A
Authority: CN
Inventors: 寺井谦治; 八木功一; 山本胜规; 松冈真二; 三木由誉
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2010-10-20
Filing date: 2011-10-18
Publication date: 2012-05-16
Anticipated expiration: 2031-10-18
Also published as: CN202359391U; TW201217597A; JP2012085838A; CN102454088B; TWI448599B; EP2444540A1

Abstract

A drum-type washing machine of the present invention includes a water tank supported in a washing machine main body, a rotary drum supported in the water tank, a motor fixed to an outer bottom portion of the water tank, a driving pulley provided on one end of a motor shaft of the motor, a rotation shaft having one end fixed to the rotary drum , a driven pulley securely installed on the other rotation shaft end, and a belt transmitting rotation of the motor to the driven pulley. A waterproof cover covering around the driving pulley is fixed to the motor. Thus, an unusual noise occurring due to a sliding friction between the driving pulley and the belt can be prevented from dispersing to the outside, and slipping can be prevented from occurring due to water attached to a sliding part between the driving pulley and the belt.

Description

Tumbling-box washing machine

Technical field

The present invention relates to the structure that a kind of swing roller to tumbling-box washing machine carries out the drive pulley and the belt of drive electric motor.

Background technology

In the past; The structure that drives as swing roller to tumbling-box washing machine; For example TOHKEMY 2009-78056 communique (below; Note is made " patent documentation 1 ") in a kind of following structure is disclosed, the drive pulley from the motor reel that is formed on the motor that is fixed in the bottom of gullet outside, or the rotation of transmitting motor via belt to the driven pulley that directly links with swing roller from the drive pulley that is fixed on the motor reel.

Below, use Fig. 4 that the structure of patent documentation 1 described tumbling-box washing machine in the past is described.Fig. 4 is the profilograph of tumbling-box washing machine in the past.

As shown in Figure 4, tumbling-box washing machine in the past has tank 32 in body of the washing machine 31 inside, is supported with swing roller 33 in the tank 32 inner earth's axis, and this swing roller 33 can be rotated in the forward around rotating shaft 35, reverse rotation etc. rotates freely.Periphery wall at swing roller 33 is provided with a plurality of apertures 41 that draining is used when dehydration is turned round, and is provided with a plurality of clothings at internal perisporium and stirs with projection body 36.Be arranged on clothing on the swing roller 33 and stir with projection body 36 and in washing procedure, through being rotated in the forward of low speed, reverse rotation (for example 50rpm) clothing is stirred, unidirectional rotation (for example 1000rpm) centrifugation from clothing through high speed in dehydration procedure goes out moisture.

In addition, be fixed with rotating shaft 35, be fixed with driven pulley 37 in the right part of rotating shaft 35 in the right part of swing roller shown in Figure 4 33.Bottom outside at tank 32 is provided with motor 20, is formed with a plurality of V grooves 43 (stating after utilizing Fig. 5) in the end of the motor reel 39 of motor 20.And, between the motor reel 39 of motor 20 and driven pulley 37, be linked with belt 38 with a plurality of V shape grooves 42 (stating after utilizing Fig. 5).

In addition, above body of the washing machine 31, be provided with control part 34, this control part 34 embeds to be had from the microcomputer (not shown) of switch receiving inputted signals such as (not shown) etc.The series of processes that control part 34 is used to control from the washing procedure to the dehydration procedure etc., and the switching controls of carrying out the low speed rotation of motor 20 in washing procedure and the high speed rotation in dehydration procedure etc.

Below, the motor reel of the motor of use Fig. 5 explanation tumbling-box washing machine in the past and the structure of belt.Fig. 5 be explain (the B portion of Fig. 4) near the motor reel of motor of tumbling-box washing machine in the past structure want portion's enlarged drawing.

As shown in Figure 5, near the periphery the top ends of the motor reel that is formed by the steel with intensity, rigidity 39 is formed with a plurality of V grooves 43 with V shape groove 42 corresponding matching of belt 38.At this moment, the D outer diameter 2 with a plurality of V grooves 43 of motor reel 39 has formed V groove 43 with the mode of the diameter D1 of motor reel 39 roughly the same (comprising identical).Therefore, needn't utilize other members to constitute drive pulleys etc. and be installed on the motor reel 39, can utilize the less motor reel of diameter 39 to realize the belt pulley of driving sides.Its result, even the external diameter of driven pulley 37 is less, also can the increasing motor axle 39 with the speed reducing ratio (diameter of the diameter/motor reel 39 of driven pulley 37) of driven pulley 37.

As stated, in the past tumbling-box washing machine is that the switching controls of the rotating speed through motor 20 is transmitted the structure of the rotation of motor 20 via belt 38 to swing roller 33 with a speed reducing ratio.Thus, in washing procedure, dehydration procedure, the rotation that can be rotated cylinder 33 drives.

But, in structure in the past,, must further reduce to become the external diameter of the motor reel 39 of motor side drive pulley in order further to increase speed reducing ratio.Its result, belt 38 further becomes at a high speed with the circumferential speed of the V groove 43 of motor reel 39.

Usually, belt 38 main bodys are made up of the synthetic rubber with heat resistance, mar proof etc., have bigger frictional force.Therefore, near the V groove 43 of the periphery the V shape groove 42 of belt 38 and the top ends that is arranged at motor reel 39 repeats closely to contact and break away from circumferential speed at a high speed.Its result has and has produced the sliding sound that caused by at a high speed tight contact and disengaging, in the washing running, brings the such problem of sense of discomfort as noise to the user.

In addition; When tank 32 is supplied with the washings of low temperature; Sometimes contained moisture (steam) condenses (dewfall) at the outer wall of tank 32 grades in the inner air of body of the washing machine 31, on drippage and the sliding part attached to 43 of the V grooves of the V shape groove 42 of belt 38 and motor reel 39.At this moment, under the V of belt 38 shape groove 42 and the lower situation of the circumferential speed of the V groove 43 of motor reel 39, even some attachment of moisture on sliding part, the rotary transfer force that also can subtend swing roller 33 transmit brings bigger influence.But as example in the past, when the belt pulley of driving side was motor reel, owing to the diameter of motor reel is less, so circumferential speed accelerated, so between the V groove 43 of the V of belt 38 shape groove 42 and motor reel 39, produced slip (skidding).Therefore, the rotation that can not transmit motor 20 to swing roller 33 exactly.Its result, the performance that has in washing procedure, the dehydration procedure reduces such problem.

Summary of the invention

Tumbling-box washing machine of the present invention has following structure: have: tank, and it is bearing in the body of the washing machine; Swing roller, it is bearing in the tank; Motor; Drive pulley, it is arranged on the motor shaft end of motor; Rotating shaft, the one of which end is fixed on the swing roller; Driven pulley, it is fixedly installed on the other end of rotating shaft; Belt, it is used for transmitting to driven pulley the rotation of motor; And, on motor, be fixed with the bucker that the periphery with drive pulley covers.

Thus, prevented that the noise that produces because of the sliding friction between drive pulley and belt from spreading.In addition, can prevent that adhering to " slip " that cause by the sliding part of moisture between drive pulley and belt on the outer wall that condenses in tank etc. produces.Its result can prevent that scourability in washing procedure, the dehydration procedure, that caused by the change of the rotating speed of swing roller etc. from reducing.

Description of drawings

Fig. 1 is the profilograph of the tumbling-box washing machine in the embodiment of the present invention.

Fig. 2 be (the A portion of Fig. 1) near the motor reel of motor of this tumbling-box washing machine of explanation structure want portion's enlarged drawing.

Fig. 3 is the 3-3 line profile from B direction observation shown in Figure 2 of this tumbling-box washing machine.

Fig. 4 is the profilograph of tumbling-box washing machine in the past.

Fig. 5 be explain (the B portion of Fig. 4) near the motor reel of motor of tumbling-box washing machine in the past structure want portion's enlarged drawing.

The specific embodiment

Below, with reference to description of drawings embodiment of the present invention.In addition, for the symbol identical and omit explanation with example was identical structure tag in the past.In addition, the present invention is not limited by following embodiment.

Embodiment

As shown in Figure 1, the tumbling-box washing machine of this embodiment has tank 32 in body of the washing machine 31 inside, is supported with swing roller 33 at tank 32 inner shafts, and this swing roller 33 can be rotated in the forward around rotating shaft 35, reverse rotation etc. rotates freely.Periphery wall at swing roller 33 is provided with the aperture 41 that draining is used when a plurality of dehydrations are turned round, and is provided with a plurality of clothings at internal perisporium and stirs with projection body 36.Be arranged on clothing on the swing roller 33 and stir with projection body 36 and in washing procedure, through being rotated in the forward of low speed, reverse rotation (for example 50rpm) clothing is stirred, unidirectional rotation (for example 1000rpm) centrifugation from clothing through high speed in dehydration procedure goes out moisture.

In addition, swing roller 33 drives by the mechanism's rotation shown in below motor 20 utilizations of the bottom outside that is arranged at tank 32.At this moment, motor reel (not shown among Fig. 1) top ends at motor 20 is equipped with bucker 1.

Below, use Fig. 2 and Fig. 3 that near the structure and the mechanism of motor reel of motor of the tumbling-box washing machine of this embodiment is described.

Fig. 2 be (the A portion of Fig. 1) near the motor reel of motor of this tumbling-box washing machine of explanation structure want portion's enlarged drawing.Fig. 3 is the 3-3 line profile from B direction observation shown in Figure 2 of this tumbling-box washing machine.

As shown in Figure 2, the tumbling-box washing machine of this embodiment is fixed with the drive pulley 2 with a plurality of V grooves 43 in the top ends of the motor reel 39 of motor 20, has hung belt 38 on these a plurality of V grooves 43.And, in the periphery of the drive pulley that is fixed in motor reel 39 2, be provided with the bucker 1 on every side that covers drive pulley 2.Bucker 1 is for example formed by plastic shaping member etc., for example forms cross sectional shape and is the drum of コ word shape (comprising コ word shape) roughly, is provided with peristome 3 in the position that supplies belt 38 to pass through.

In addition, bucker 1 has the calvus 4 of a plurality of for example L word shapes in motor 20 sides.And, in the aperture 8 of the header board 5 through calvus 4 being connected to motor 20, bucker 1 and motor are positioned.Further, the periphery of the cylindrical portion 1a of bucker 1 lean on motor 20 sides, be formed with a plurality of mount pads 6 with cylindrical portion 1a, for example utilize Screw 7 screws such as grade to be fixed on the header board 5 of motor 20.

In addition, in the interior perimembranous of the cylindrical portion 1a of bucker 1, through embedding or the bonding sound-absorbing materials 9 such as the felt that constitutes by nonwoven fabric etc., foaming body, porous plastid that for example are equipped with.

In addition, on the right side of the コ of bucker 1 word shape (the right flank side shown in Fig. 2), be provided with the lateral opening 10 that links to each other with the peristome that supplies belt 38 to pass through 3.Via the lateral opening 10 that is arranged on the bucker 1, can carry out belt 38 to the installation that is fixed on the drive pulley 2 on the motor reel 39, the variation by tension force etc. of sliding mode and belt 38 of V shape groove 42 and the V groove 43 of drive pulley 2 of observing belt 38 cause lax etc.

In addition, as shown in Figure 3, above bucker 1, be provided with 2 peristomes 3 that supply belt 38 to pass through.Therefore, sound-absorbing material 9 be installed in bucker 1 cylindrical portion 1a on peristome 3 these two whole inner peripheral surfaces the position.

In addition, the upper side surface of the peristome 3 that passes through at the confession belt 38 of bucker 1, the edge is integrally formed with shaft of rib 11 with the bearing of trend equidirectional of motor reel 39.Thus, can prevent on tank etc., to condense that the moisture of (dewfall) is dropped on the upper surface 12 of bucker 1 and enter into the slipper of 43 of V grooves of V shape groove 42 and the drive pulley 2 of the inner belt 38 of bucker 1 from peristome 3.

As stated, adopt the tumbling-box washing machine of this embodiment, can utilize 1 pair of bucker to carry out sound insulation (covering) on the sliding part of 2 of belt 38 and drive pulleys because of the noises such as sliding sound that the rotation of motor 20 produces.Thus, can obviously reduce the noises such as sliding sound that are sent to body of the washing machine 31 outsides.Its result can suppress the sense of discomfort of the user being brought by the noise in the washing machine running.

In addition, adopt the tumbling-box washing machine of this embodiment, sound-absorbing material 9 is installed, can absorb noises such as sliding sound, perhaps can prevent echogenicity in bucker 1 inside through interior perimembranous at bucker 1.Its result obviously reduces to the body of the washing machine 31 outside noises that transmit.

In addition; Adopt the tumbling-box washing machine of this embodiment, except supplying peristome 3 that belt 38 passes through, bucker 1 roughly in the entire circumference installation sound-absorbing material 9 of perimembranous; Thereby absorbed noises such as sliding sound effectively, and can suppress the generation of echo etc. significantly.

In addition, adopt the tumbling-box washing machine of this embodiment, around the sliding part that the V shape groove 42 of belt 38 and the V groove of drive pulley 2 are 43, except peristome 3, all covered by bucker 1.Therefore, can reduce effectively that outer wall in tank 32 grades condenses (dewfall) and the moisture that drips gets into sliding part.Thus, can prevent 43 generations of V groove " slip " of the V shape groove 42 and the drive pulley 2 of belt 38.Its result can prevent that scourability in washing procedure, the dehydration procedure, that caused by the change of the rotating speed of swing roller 33 etc. from reducing.

The present invention has following structure: have: tank, and it is bearing in the body of the washing machine; Swing roller, it is bearing in the tank; Motor, it is fixed on the bottom outside of tank; Drive pulley, it is arranged on the motor shaft end of motor; Rotating shaft, the one of which end is fixed on the swing roller; Driven pulley, it is fixedly installed on the other end of rotating shaft; Belt, it is used for transmitting to driven pulley the rotation of motor; And on motor, be fixed with the bucker that the periphery with drive pulley covers.Thus, can prevent to spread to the outside, and can prevent to adhere to " slip " that causes by the sliding part of moisture between drive pulley and belt because of the noise that the sliding friction between drive pulley and belt produces.

In addition, the present invention has the structure that sound-absorbing material has been installed in the interior perimembranous of bucker.Thus, absorbed the noise that produces because of the sliding friction between drive pulley and belt effectively, can reduce the diffusion of noise significantly to the outside.

In addition, the present invention has the structure that sound-absorbing material is installed in the part except the peristome that the confession belt passes through on every side of drive pulley.Thus, can absorb the noise that the sliding friction because of drive pulley and belt produces effectively.

In addition, sound-absorbing material of the present invention is a felt.Thus, the noise with respect to the sliding friction because of drive pulley and belt produces can obtain higher assimilation effect.

In an embodiment, as an example, motor is arranged on the bottom of gullet outside, and still, the position that is provided with of motor is not limited to be located at the bottom of gullet outside, also can be located at other position, for example the top of tank.

Claims

1. A drum-type washing machine, characterized in that, the drum-type washing machine has:

a sink supported within the main body of the washing machine;

a rotating drum supported in said tank;

motor;

a drive pulley, which is arranged on the motor shaft end of the motor;

a rotating shaft, one end of which is fixed on the above-mentioned rotating drum;

The driven pulley is fixedly arranged on the other end of the above-mentioned rotating shaft;

a belt for transmitting rotation of the motor to the driven pulley;

A waterproof cover covering the outer periphery of the drive pulley is fixed to the motor.

2. The drum type washing machine according to claim 1, wherein:

A sound absorbing material is attached to the inner peripheral portion of the waterproof cover.

3. The drum type washing machine according to claim 2, wherein:

The sound-absorbing material is attached to a portion around the drive pulley other than an opening through which the belt passes.

4. The drum type washing machine according to claim 2 or 3, wherein:

The above-mentioned sound-absorbing material is felt.

5. The drum type washing machine according to claim 1, wherein:

Above-mentioned electric motor is fixed on the bottom outer side of above-mentioned water tank.

6. The drum type washing machine according to claim 1, wherein:

Ribs are provided in the same direction as the extending direction of the motor shaft on the upper side surface of the opening of the waterproof cover through which the belt passes.