CN2873843Y - The inner tub of the fully automatic suspension double wave wheel washing machine - Google Patents

Abstract

The utility model relates to an inner barrel of a fully automatic suspended double wave wheel washing machine. A plurality of drainage holes are arranged on the inner wall of the barrel. The angle between the top plane of the pulsator and the center line of the inner barrel is α, and the characteristic is that the inner barrel is formed by a hemispherical bottom with an inner radius of R and a height H extending upward from the top of the hemispherical bottom. Composed of cylinders; where: R=r/cosα; 2R*cosα－R<H≤2R; the center of the bottom of the barrel is symmetrically provided with a transmission gear protruding hole. The inner barrel provided by the utility model fully meets the water-saving requirements of the fully automatic suspended double wave wheel washing machine, and the design of the spherical bottom and the fixed block solves the technical problem that the laundry enters the back of the wave wheel; The gear box is equipped with positioning slots to ensure the coaxiality requirements between the inner barrel and the drive shaft.

Description

The inner tub of the fully automatic suspension double wave wheel washing machine

technical field

The utility model relates to an inner tub of a washing machine, in particular to an inner tub of a fully automatic suspended double wave wheel washing machine.

Background technique

Existing full-automatic pulsator washing machine is all provided with inner barrel in outer barrel, and its effect is to wash clothes and dehydrate, and barrel inwall is provided with drainage hole and the convex rib that plays scrubbing effect. The bottom is provided with a bearing hole, the inner shaft of the transmission shaft passes through the bearing hole, and a pulsator is connected to the end of the inner shaft of the transmission shaft. When washing, the motor drives the pulsator to rotate through the inner shaft to wash clothes; The transmission shaft is composed of an inner shaft and an outer shaft arranged coaxially. The outer shaft is fixedly connected to the bottom of the inner tub. During dehydration, the motor drives the inner tub to rotate and dehydrate through the outer shaft. The transmission shaft passes through the bearing and the sealing device It is pivotally arranged at the bottom of the outer barrel, and a shock-absorbing balance ring is also provided at the mouth of the inner barrel. For the fully automatic hanging double wave wheel washing machine, its inner tub is very different from the inner tub of the existing fully automatic washing machine in structure:

1. There are two counter-rotating pulsators on the inner barrel at a certain angle. In order to meet the needs of pulsator transmission, the drive shaft driven by the motor (including the coaxial inner shaft and outer shaft) passes through the reduction box It is connected with the inner barrel and the pulsator, wherein the outer shaft is connected to the reduction box body, the inner barrel is fixed on the reduction box body, and the inner shaft transmits power to the pulsator through the transmission gear and the second output shaft. Therefore, the bottom structure of the inner barrel must be adapted to the functional requirements;

2. The pulsator of the existing fully automatic washing machine is placed flat on the bottom of the inner tub, and is adapted to the shape of the bottom of the inner tub (generally, the bottom of the inner tub and the bottom of the pulsator are flat), and the gap between the pulsator and the inner tub is small. Laundry will not enter the back of the pulsator. In the fully automatic suspended double pulsator washing machine, two counter-rotating pulsators are arranged in the inner tub at a certain angle, and how to solve the technical problem that must be solved is how to solve the laundry to enter the back of the pulsator;

3. The bottom of the inner barrel is installed on the reduction box, and the transmission shaft is installed at the bottom of the reduction box. The coaxiality requirements between the inner barrel and the transmission shaft must be guaranteed.

Contents of the invention

The technical problem to be solved by the utility model is to provide an inner tub of a fully automatic suspended double pulsator washing machine for the difference between the fully automatic suspended double pulsator washing machine and the existing fully automatic pulsator washing machine.

The inner tub of the fully automatic suspended double-pulse washing machine provided by the utility model is realized by the following technical scheme.

An inner tub of a fully automatic suspended double pulsator washing machine is provided with a plurality of drain holes on the inner wall of the tub, and a pair of bowl-shaped pulsators with an upper opening diameter of r are installed on both sides of the bottom of the inner tub. The angle between the mouth plane and the center line of the inner barrel is α, and the characteristic is that the inner barrel is composed of a hemispherical barrel bottom with an inner radius of R and a cylinder formed by extending upwards to a height H from the upper opening of the hemispherical barrel bottom ;in:

R=r/cosα;

2R*cosα-R<H≤2R;

The center of the bucket bottom is symmetrically provided with a drive gear protruding hole.

The realization scheme of the present utility model can also be:

An inner tub of a fully automatic suspended double pulsator washing machine is provided with a plurality of drain holes on the inner wall of the tub, and a pair of bowl-shaped pulsators with an upper opening diameter of r are installed on both sides of the bottom of the inner tub. The included angle between the mouth plane and the center line of the inner barrel is α, and it is characterized in that: the inner barrel is composed of a barrel body and a barrel bottom, and the barrel body is composed of a cylindrical part and a spherical table-shaped barrel with an inner radius Composition, the bottom of the barrel is a ball table-shaped barrel with an inner radius of R, wherein:

R=r/cosα;

2R*cosα-R<H≤2R;

There is a circle of outward flanging on the upper opening of the table-shaped bucket bottom, and the lower opening flange of the ball table-shaped barrel of the barrel body is formed by engaging the upper opening of the ball table-shaped bucket bottom. One.

In addition to the above-mentioned necessary technical features, the following technical content may also be added during the specific implementation process:

The angle α between the upper opening plane of the pulsator and the center line of the inner bucket is 25-30 degrees.

Elastic grooves are arranged downwards on the circumferential flange of the upper opening of the ball table-shaped bucket bottom.

A bottomed cylinder is provided at the bottom of the bottom of the bucket to install and locate a reduction gear box. The two transmission gear extension holes are located at the bottom of the bottomed cylinder, and the two A concentric spherical surface with the same radius as the bottom of the bucket is formed between the protruding holes of the transmission gear, and a positioning groove for installing a reduction gear box is provided downward at the bottom of the bottomed cylinder.

A reinforcement ring is provided on the inside or outside of the upper opening of the cylinder.

The reinforcing ring is an annular ring, and the annular ring is provided with triangular or trapezoidal protruding teeth.

An upper fixed block is provided in the barrel at the upper position of the pulsator, and the upper fixed block is composed of a concentric spherical surface with the same radius as the bottom of the hemispherical barrel and an inner cylindrical surface connecting the concentric spherical surface and the spherical surface and the inner cylindrical surface. The surface is connected to the connecting surface of the cylindrical part of the barrel, and the diameter of the inner cylindrical surface is D=4rsinα, wherein: r is the diameter of the upper opening of the bowl-shaped pulsator, and α is the surface of the upper opening of the pulsator and the inner barrel The angle between the centerlines.

At the bottom of the inner barrel, a positioning ring and a plurality of installation holes are arranged.

At the position of the reinforcement ring, a balance ring is provided on the outside or inside of the upper opening of the barrel, and at least the joint surface between the inner barrel and the balance ring on the upward rotating side of the pulsator is a smooth transition surface.

The utility model has the advantages of:

1. The inner tub provided by the utility model fully meets the water-saving requirements of the fully automatic suspended double wave wheel washing machine, and the design of the spherical bottom and the fixed block solves the technical problem that the laundry enters the back of the wave wheel;

2. There is a positioning groove for the reduction gear box at the bottom to ensure the coaxiality between the inner barrel and the transmission shaft.

In order to have a further understanding of the structural features and effects of the present utility model, specific embodiments are listed and described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic diagram of the front view of the inner tub of the fully automatic suspended double-wave-wheel washing machine of the present invention.

FIG. 2 is a side view of FIG. 1 .

Fig. 3 is a schematic diagram of a specific embodiment of the inner tub of the fully automatic suspended double pulsator washing machine of the present invention.

FIG. 4 is a side view of FIG. 3 .

Fig. 5 is an upper side perspective view of the bottom of the inner bucket in the embodiment of Fig. 3 .

Fig. 6 is a bottom perspective view of the bottom of the inner tub in the embodiment of Fig. 3 .

Fig. 7 is a rear side perspective view of the upper fixing block installed in the inner tub.

FIG. 8 is a front side perspective view of the fixing block of FIG. 7 .

Fig. 9 is a schematic diagram of the reduction gearbox installed on the bottom of the inner tub.

Detailed ways

The utility model provides an inner tub specially used for a fully automatic suspension double wave wheel washing machine. Its structure is shown in Figures 1 and 2. As the inner tub of a fully automatic washing machine, it must have two functions of washing and dehydration. The washing function is realized by a pair of bowl-shaped pulsators with a diameter of r at the upper opening symmetrically arranged on the center line of the inner barrel installed at the bottom of the inner barrel. The included angle between the planes of the included angle is α (that is, the included angle between the upper opening plane of the pulsator and the centerline of the inner barrel). The dehydration function is realized by a plurality of drainage holes provided on the inner wall of the barrel and the inner barrel rotating under the drive of the outer shaft of the drive shaft. The biggest difference between the inner barrel of the present utility model and the inner barrel of the existing general automatic washing machine is that the inner barrel is made of a hemispherical barrel bottom 1 with an inner radius of R and extends upwards from the upper opening of the hemispherical barrel bottom 1 to a height of H. Composed of cylindrical parts; of which:

R=r/cosα;

2R*cosα-R<H≤2R;

The included angle α=25-30 ° of the top plane of general pulsator and inner barrel center line.

On the one hand, the design of the bottom of the spherical barrel is to meet the installation needs of the two suspended pulsators. Compared with the cylindrical inner barrel, there will be no excessive unevenness between the bottom 1 of the spherical barrel and the pulsators standing obliquely on both sides of the bottom of the barrel. The gap between the pulsator and the bottom of the inner barrel is equivalent to the relationship between the circular plane inscribed on the sphere; if a cylindrical inner barrel is used, there are only three points of contact between the vertical pulsator and the inner barrel, which is equivalent to the relationship inscribed on the circle. The rectangular relationship has uneven and excessively large gaps, and the laundry will enter the back of the pulsator through the gaps, making it impossible to wash. The relationship in the above formula is a theoretical relationship. In actual use, a certain gap should be considered, and the radius R of the ball should be slightly larger than the calculated value.

Another advantage brought by the design of the bottom of the spherical bucket is water saving. The outer bucket matched with the inner bucket at the bottom of the spherical bucket can also be designed as a corresponding spherical shape. The water contained in the barrel is much less than the water contained in the cylindrical outer barrel, so it has the effect of saving water.

Because the two suspended pulsators are arranged in the inner barrel through the pulsator bracket (not shown in the figure), the pulsator is through the conical gear ring on the back of the pulsator and the conical gear at the end of the second output shaft 50 of the reduction box installed at the bottom of the bucket. Engagement transmission (shown in Figure 9), therefore, bucket bottom 1 center is provided with drive gear shaft protruding hole 3 symmetrically.

In the implementation examples shown in Figures 3 and 4, considering the convenience of manufacture and the selection of materials, the inner barrel is composed of two parts: a barrel body 4 and a barrel bottom 5, and the barrel body 4 is composed of a cylindrical part 41 and an inner barrel. Radius is the ball table-shaped barrel 42 of R, and the bottom of the barrel is a ball table-shaped barrel 5 with an inner radius of R, wherein:

R=r/cosα;

2R*cosα-R<H≤2R;

A circle of outward flanges 6 (see Figures 5 and 6) is provided on the upper opening at the bottom of the ball table-shaped barrel 5, and the lower flange of the ball table-shaped barrel 42 of the barrel engages with the ball table-shaped barrel 5 on the flange 6; or the ball table-shaped tube 42 of the barrel body 4 is rolled and occluded on the flange 6 of the ball table-shaped barrel 5 upper mouth so that the barrel body 4 and The billiard-shaped barrel is integrated. The barrel body 4 is stamped and welded with a stainless steel sheet. The billiard-shaped bucket 5 is injection molded by plastic, specifically PP+30% glass fiber.

For the convenience of assembling and rolling, an elastic groove 7 is arranged downward on the circumferential flange 6 on the top of the table-shaped bucket 5 .

The reduction box 40 is fixed at the bottom of the inner tub through the installation and positioning part 8 of the reduction box at the center of the bottom of the tub (as shown in FIG. 9 ).

In the illustrated embodiment, the installation and positioning part of the reduction gearbox is located downwards at the bottom of the ball table-shaped bucket (Fig. 3, 4 embodiment) or the hemispherical bottom 1 (Fig. 1, 2 embodiment) It is formed by a bottomed cylinder 8, and the two transmission gear extension holes 3 are located at the bottom of the bottom cylinder 8, and between the two transmission gear extension holes 3 is a The concentric spherical surface 9 of the equal radius of the table-shaped barrel part is provided with a reduction gear box installation positioning step 10, a positioning groove 11 and a mounting hole 14 downwards at the bottom of the bottomed cylinder 8. The casing mounting flange and the cover of the reduction box 40 are also provided with corresponding positioning steps and positioning flanges, and the described reduction box 40 is positioned by the positioning steps and positioning flanges, and is passed through by screws. The mounting holes are positioned at the bottom of the barrel to ensure that the input shaft of the reduction box is coaxial with the center of rotation of the inner barrel.

The installation and positioning part of the reduction box can also be provided with a plurality of installation columns and positioning pins at the bottom of the spherical inner barrel to ensure that the input shaft of the reduction box is coaxial with the rotation center of the inner barrel through the positioning pins.

In order to prevent deformation of the thin-walled stainless steel cylinder 4, a reinforcement ring 12 is provided on the upper opening of the cylinder 4. The reinforcement ring 12 is an annular ring, and triangular or trapezoidal protruding teeth are arranged on the annular ring. 13. At the position of the reinforcing ring 12, a balance ring 30 is provided on the outside or inside of the upper opening of the cylinder body 4, and at least the joint surface between the inner barrel 4 and the balance ring 30 on the upwardly rotating side of the pulsator is a smooth transition surface (as shown in Fig. 4 partial zoomed in).

Since the barrel part 2 of the inner barrel is formed by extending the upper mouth of the hemispherical table-shaped barrel part 1 upwards to a height of H, there is a gap between the pulsator above the bottom 1 of the hemispherical barrel and the barrel part 2, which rises with height. And the gradually increasing gap t, t=r(1-sin2α)/cosα, (α≤45°). In order to eliminate the gap t, an upper fixed block 20 (as shown in Figure 1-4) is provided in the bucket at the top of the pulsator. The concentric spherical surface 21 with the same radius at the bottom, the inner cylindrical surface 22 connecting the concentric spherical surface 21 and the connection surfaces 23, 24, 25 connecting the spherical surface and the inner cylindrical surface to the cylindrical part of the barrel body are formed. The diameter D=4rsinα of the inner cylindrical surface 22 . The back side of the upper fixing block 20 is provided with two fixing studs 26, and the upper fixing block 20 is fixed on the inner surface of the barrel part 2 of the inner barrel through the two fixing studs 26 with screws. On the fixed block 20, a wear-resistant block 14 (shown in FIG. 1 ) is also provided on the back of the upper edge of the pulsator.

Claims (10)

1. The inner tub of a fully automatic suspended double pulsator washing machine is provided with a plurality of drainage holes on the inner wall of the tub, and a pair of bowl-shaped pulsators with an upper diameter of r are installed on the bottom of the inner tub. The angle between the mouth plane and the center line of the inner barrel is α, and the characteristic is that the inner barrel is a cylindrical part formed by a hemispherical barrel bottom with an inner radius R and a height H extending upward from the upper opening of the hemispherical barrel bottom composed of; of which: R=r/cosα; 2R*cosα-R<H≤2R: The center of the barrel bottom is symmetrically provided with two transmission gear protruding holes. 2. The inner tub of a fully automatic suspended double pulsator washing machine has a plurality of drain holes on the inner wall of the tub, and a pair of bowl-shaped pulsators with an upper opening diameter of r are installed on both sides of the bottom of the inner tub. The pulsators The angle between the top plane of the upper mouth and the center line of the inner barrel is α, and it is characterized in that: the inner barrel is composed of a barrel body and a barrel bottom, and the barrel body is composed of a cylindrical part and a ball with an inner radius of R It consists of a table-shaped barrel, and the bottom of the barrel is a spherical table-shaped barrel with an inner radius of R, wherein: R=r/cosα; 2R*cosα-R<H≤2R: There is a circle of outward flanging on the upper mouth of the ball table-shaped barrel, and the lower flange of the ball table-shaped barrel of the barrel body is engaged with the upper flange of the ball table-shaped barrel to form a whole ; The center of the barrel bottom is symmetrically provided with two transmission gear protruding holes. 3. The inner tub of the fully automatic suspended double pulsator washing machine according to claim 1 or 2, wherein the angle α between the top surface of the pulsator and the center line of the inner tub is 25-30 degrees. 4. The inner tub of a fully automatic suspended double-wave-wheel washing machine according to claim 2, characterized in that elastic grooves are arranged downwards on the circumferential flange of the upper mouth of the table-shaped tub. 5. The inner tub of the fully automatic suspended double-wave-wheel washing machine according to claim 1 or 2, characterized in that: a reduction gear box consisting of a bottomed cylinder is provided downwards at the bottom of the tub The positioning part is installed, the two transmission gear protruding holes are set at the bottom of the bottomed cylinder, and the concentric spherical surface with the same radius as the bottom of the barrel is between the two transmission gear protruding holes, The bottom of the cylinder is provided with a reduction gear box installation positioning groove downwards. 6. The inner tub of a fully automatic suspended double-wave-wheel washing machine according to claim 1 or 2, characterized in that: a reinforcing ring is provided on the inside or outside of the upper opening of the cylinder body. 7. The inner tub of a fully automatic suspended double pulsator washing machine according to claim 6, characterized in that: at the position of the reinforcement ring, a balance ring is provided on the outside or inside of the upper opening of the cylinder body, and at least the pulsator rotates upwards The bonding surface between the side inner barrel and the gimbal is a smooth transition surface. 8. The inner tub of a fully automatic suspended double pulsator washing machine according to claim 6, wherein the reinforcing ring is an annular ring, and the annular ring is provided with triangular or trapezoidal protruding teeth. 9. The inner tub of a fully automatic suspended double pulsator washing machine according to claim 1 or 2, characterized in that: an upper fixing block is provided in the tub at the upper part of the pulsator, and the upper fixing block is made of a hemisphere Concentric spherical surfaces of equal radius at the bottom of the barrel, an inner cylindrical surface connecting the concentric spherical surfaces, and a connecting surface connecting the spherical surface and the inner cylindrical surface to the cylindrical part of the barrel body, the diameter of the inner cylindrical surface D =4rsinα, wherein: r is the diameter of the upper opening of the bowl-shaped pulsator, and α is the angle between the upper opening plane of the pulsator and the centerline of the inner barrel. 10. The inner tub of a fully automatic suspended double-wave-wheel washing machine according to claim 1 or 2, wherein a positioning ring and a plurality of mounting holes are provided at the bottom of the inner tub.

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