WO2016192330A1

WO2016192330A1 - Sealing installation structure of inner barrel bottom and flange of washing machine

Info

Publication number: WO2016192330A1
Application number: PCT/CN2015/095301
Authority: WO
Inventors: 程宝珍; 杨林; 王玲臣; 张开宏; 田云; 刘尊安
Original assignee: 青岛海尔洗衣机有限公司
Priority date: 2015-05-29
Filing date: 2015-11-23
Publication date: 2016-12-08
Also published as: KR20180010266A; CN106286834B; CN106286834A; EP3305971A4; EP3305971A1

Abstract

Disclosed is a sealing installation structure of an inner barrel bottom and a flange of a washing machine, comprising an inner barrel bottom (1), a flange (2) and a sealing ring (3), wherein a fitting surface between the flange and the inner barrel bottom is provided with an annular limiting sink (8), the sealing ring is positioned and clamped in the limiting sink, the sealing ring has a flat ring structure, and an upper surface and/or a lower surface of the sealing ring is provided with at least one circle of ring sealing ribs. The structure can guarantee that no radial and movable deformations occur in the case where forces are applied, thereby guaranteeing the sealing effect between the inner barrel bottom and the flange in the working process of the washing machine.

Description

Bottom flange sealing installation structure of washing machine inner barrel

Technical field

The invention relates to the field of washing machines, in particular to a barrel bottom sealing structure of a washing machine, in particular to a barrel bottom flange sealing installation structure of the washing machine.

Background technique

In the existing pulsator type washing machine, when the laundry is used, the inner barrel and the side wall of the outer barrel need to be filled with water, so the inner barrel structure does not need to be sealed, especially the inner bottom of the barrel, for quick drainage, between the inner barrel bottom and the inner barrel flange It also has a gap, and even if the strength of the inner tub bottom is ensured, the water outlet hole is increased.

In the pulsator washing machine of the structure, the water between the inner and outer barrels does not participate in the washing, and the water actually involved in the washing is only the part in the inner tub, which causes a large waste of water resources, and excessive water between the inner and outer barrels. It also reduces the concentration of detergent/washing detergent in the wash liquor.

The improved fully automatic pulsator washing machine with a non-porous inner barrel structure solved the problem of water waste and solved the pollution problem of clothes. There is no leaking small hole for the water in the barrel wall of the inner barrel, and the washing and rinsing water are all concentrated in the non-porous inner barrel, so that it is both a water washing bucket and a centrifugal dewatering bucket, and the outer tub of the washing machine is actually only one It is responsible for collecting the passage of the non-porous inner bucket to drain water during dewatering. When draining, increase the inner drum rotation speed by centrifugal force, the water in the bucket rises along the inner bucket wall, and is discharged from the drainage hole below the inner balance ring of the inner bucket; or the lower part of the inner bucket is controllable The opening and closing drain port discharges most of the water from the drain port; when centrifugally dehydrating, the non-porous inner tub rotates at a high speed, and the residual water in the clothes rises along the barrel wall of the non-porous inner tub under the centrifugal force, and penetrates through the drain hole The outer tub is discharged through the drain port and the drain pipe at the bottom of the outer tub.

However, in the above-mentioned fully automatic pulsator washing machine with a non-porous inner barrel structure, the sealing structure between the inner bottom of the barrel and the flange adopts an O-ring, which is directly sandwiched between the bottom of the inner barrel and the upper surface of the flange, and the sealing effect is extremely high. Poor, with long-term use, the inner barrel bottom and the flange are forced to cause the seal to detach. Or as in the application number: 201120552457.5 "a washing machine float valve type inner barrel clutch type sealing structure". The utility model provides a flat annular sealing structure, but it can not effectively prevent the radial deformation of the sealing structure in the radial direction or the circumferential direction, which affects the sealing effect.

The present invention has been made in view of the above.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art, and to provide a sealing structure for a bottom flange of a washing machine, which can satisfy the function of sealing, and can also not generate radial and circumferential movement deformation under stress. Further guarantees the sealing effect.

In order to achieve the object, the present invention adopts the following technical solution: a barrel bottom flange sealing installation structure of the washing machine, including an inner barrel bottom, a flange and a sealing ring, wherein the flange and the inner bottom of the inner barrel are provided with a ring shape. Limiting the sinking groove, the sealing ring is positioned in the limit sinking groove.

Further, the sealing ring is a flat annular structure, and the upper surface and/or the lower surface of the sealing ring is provided with at least one annular sealing rib.

Further, the sealing ring and the flange are provided with a matching positioning structure. Preferably, the positioning structure comprises a positioning protrusion disposed on the sealing ring and a positioning groove disposed on the flange and matching with the positioning protrusion, more preferably The positioning protrusion integrally protrudes from the outer circumference of the sealing ring, and the gap formed on the outer surface of the limiting slot is formed to form the positioning groove.

Further, the upper surface and/or the lower surface of the sealing ring is provided with an annular groove, and the annular groove is provided with an annular sealing rib, and the height of the annular sealing rib is greater than the depth of the annular groove.

Further, the radial width of the annular groove is 1/6-1/2 times the radial width of the sealing ring, and the depth of the annular groove is 1/6-1/2 times the height of the sealing ring, and the annular sealing The height of the rib is 1.1-2 times the depth of the annular groove, and the radial width of the annular sealing rib is 1/4-1/2 times the radial width of the annular groove.

Further, the sealing ring is a flat annular structure, comprising an annular supporting portion supported in the limiting slot and an annular sealing portion which is pressed and fitted with the flange and/or the inner bottom of the barrel, and the annular sealing portion is protruded On the surface of the annular support.

Further, the annular support portion has a rectangular structure in cross section, and the annular seal portion protrudes from the upper surface and the lower surface of the annular support portion.

Further, the surface of the annular support portion is respectively provided with an annular groove on both sides of the annular sealing portion, and the annular groove constitutes an annular deformation sealing compression receiving space.

Further, the surface of the annular support portion is respectively provided with annular grooves on both sides of the annular sealing portion, and the annular groove constitutes an annular deformation sealing compression receiving space.

Further, the sealing ring further includes at least one positioning portion disposed on an outer circumference of the annular support portion, and the positioning groove is integrally formed on the outer circumference of the limiting sinking groove.

The invention relates to a fully automatic washing machine, comprising an outer tub and an inner tub disposed in the outer tub. The upper part of the inner tub is provided with a water outlet hole, and the lower part of the water outlet hole of the inner bucket is a water-filling chamber structure in which the peripheral wall and the bottom wall are sealed.

The washing machine of the invention only has a water outlet hole in the upper part of the inner tub and a non-porous seal in the lower part, so that the washing water does not need to enter the area between the inner barrel and the outer barrel, and only needs to inject a suitable amount of water into the inner barrel, thereby achieving a substantial saving of washing water. Purpose, The water saving rate has reached 30% to 40%; at the same time, the amount of detergent, auxiliary agent and other additives is reduced in each washing, which saves the washing cost; in addition, the area between the inner tub and the outer tub is no longer involved in washing, The dirt trapped in the area between the inner tub and the outer tub, the bacteria that breed will not come into contact with the clothes in the inner tub, thus effectively avoiding the cross infection of the bacteria, making the use of the washing machine more sanitary, environmentally friendly and safe; The high-speed rotation of the inner barrel drives the upward flow of water to drain from the water outlet hole, and the last floating thread does not remain on the clothes, and is completely discharged, and the washing is cleaner.

After adopting the technical solution described in the present invention, the following beneficial effects are brought about:

1. The sealing structure of the bottom flange of the washing machine in the washing machine of the invention has good sealing effect, convenient installation and long service life;

2. The annular sealing rib/annular sealing portion of the sealing ring of the invention can ensure the reliability of the sealing, and the annular groove structure can ensure the reliability of the sealing when the sealing rib/annular sealing portion is deformed by force, positioning The structure ensures that no displacement or radial deformation occurs.

DRAWINGS

Figure 1 is a schematic view showing the sealing structure of the bottom flange of the inner tub of the washing machine of the present invention;

Figure 2 is an enlarged schematic view of a portion A in Figure 1;

Figure 3 is a schematic view showing the structure of the sealing ring of the present invention;

Figure 4 is a schematic view showing the sealing structure of the bottom flange of the inner tub of another washing machine of the present invention;

Figure 5 is an enlarged schematic view of a portion B of Figure 4;

Figure 6 is a schematic view showing the structure of another sealing ring of the present invention;

The reference numerals in the drawings indicate: 1, inner bottom, 2, flange, 3, sealing ring, 4, annular sealing rib, 5, positioning convex, 6, annular groove, 7, annular support, 8, limit Sinking, 9, positioning part, 91, flange, 92, positioning column.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1 to FIG. 6 , the inner bottom flange sealing installation structure of the washing machine of the present invention comprises an inner tub bottom 1, a flange 2 and a sealing ring 3, and the fitting surface of the flange 2 and the inner tub bottom 1 is as shown in FIG. An annular limiting slot 8 is arranged on the upper side, and the sealing ring 3 is positioned and clamped in the limiting slot 8 .

The bottom surface of the bottom 1 of the washing machine and the bottom surface of the flange 2 are curved surfaces. For better sealing effect, the inner surface of the bottom of the groove of the limit slot 8 is a plane, corresponding to the lower surface of the bottom of the inner barrel 1 above the limit sinking groove. In the plane, the structure keeps the distance between the inner bottom 1 and the flange 2 at the position of the limit sink, so that the seal is received on the annular clamping surface The force is even, preventing the incomplete sealing caused by the uneven force of the sealing ring, and avoiding the deformation displacement of the part where the sealing ring is subjected to a large force affects the sealing effect.

Embodiment 1

As shown in FIG. 2 and FIG. 3, the sealing ring 3 of the present invention is a flat annular structure, and an annular sealing bead 4 is disposed on the upper surface and/or the lower surface of the sealing ring 3. Since the radius of the sealing ring installed at the position is large, the normal sealing ring is easily displaced or rolled and deformed during installation, and the sealing effect is not achieved. The above-mentioned flat ring structure of the invention increases the stability of the sealing ring when installed. To avoid deformation and displacement, and at the same time, the annular sealing rib on the surface is used to effectively achieve the sealing effect.

Embodiment 2

As shown in FIG. 5 and FIG. 6, the upper surface and/or the lower surface of the sealing ring 3 are respectively provided with two annular sealing ribs 4.

Embodiment 3

As shown in FIG. 3, the sealing ring 3 and the flange 2 of the present embodiment are provided with a matching positioning structure.

The positioning structure includes a positioning protrusion 5 provided on the sealing ring 3 and a positioning groove (not shown) provided on the flange 2 to match the positioning protrusion.

More preferably, the positioning protrusion 5 integrally protrudes from the outer circumference of the sealing ring 3, and the opening formed in the outer periphery of the limiting slot 8 constitutes the positioning groove.

The positioning structure can ensure that the sealing ring 3 does not have a radial and circumferential offset when the sealing ring 3 is subjected to a torque force by the pressing force of the inner tub bottom 1 and the flange 2 and when the washing machine is operated, further Ensure the sealing effect of the sealing ring 3.

Embodiment 4

As shown in FIG. 2, the upper surface and/or the lower surface of the sealing ring 3 is provided with an annular groove 6, and the annular groove 6 is provided with an annular sealing rib 4, and the height of the annular sealing rib 4 is larger than the annular groove. The depth of 6.

The annular groove 6 constitutes an annular sealing bead 4 for compressing the deformation accommodating space. When the sealing ring 3 is pressed and deformed by force, the annular sealing rib 4 is still in close contact with the inner tub bottom 1 and the flange 2, further ensuring the sealing effect.

Preferably, the annular sealing bead 4 is disposed at the center of the annular groove 6 with the center of the circle.

More preferably, the radial width of the annular groove 6 is 1/6-1/2 times the radial width of the sealing ring 3, and the depth of the annular groove 6 is 1/6-1/ of the height of the sealing ring 3. 2 times, the height of the annular sealing bead 4 is 1.1-2 times the depth of the annular groove 6, and the radial width of the annular sealing bead 4 is 1/4-1/2 times the radial width of the annular groove 6.

Embodiment 5

As shown in FIG. 2 and FIG. 3, the sealing ring 3 is a flat annular structure, including an annular support portion 7 supported in the limiting slot 8 and a compression sticker with the flange 2 and/or the inner barrel bottom 1 Combined annular seal, the annular seal protrudes from the annular support Part 7 surface. The annular support portion 7 functions to stabilize the sealing ring 3, further ensuring the sealing effect and making the mounting easier. The annular seal portion described in this embodiment is an annular seal bead 4.

Preferably, the annular support portion 7 has a rectangular structure in cross section, and the annular seal portion protrudes from the upper surface and the lower surface of the annular support portion 7.

More preferably, the surface of the annular support portion 7 is respectively provided with an annular groove 6 on both sides of the annular sealing portion 9, and the annular groove 6 constitutes an annular deformation portion 9 for compressing the deformation accommodating space.

As shown in FIG. 5 and FIG. 6, the annular seal portion includes two inner and outer annular seal ribs 4 disposed on the upper surface of the annular support portion 7, and inner and outer annular seal projections disposed on the lower surface of the annular support portion 7. The rib 4 is provided directly on the surface of the annular support portion 7. The gap between the inner and outer annular seal ribs 4 of the same surface constitutes an annular deformation rib 4 compressive deformation accommodating space.

Embodiment 6

As shown in FIG. 6 , the sealing ring 3 of the embodiment further includes at least one positioning portion 9 disposed on the outer circumference of the annular supporting portion 7 , and the positioning groove 9 is integrally formed with the positioning groove 9 on the outer periphery of the limiting slot 8 (in the figure) Not shown).

Specifically, the positioning portion 9 includes a flange 91 disposed on the outer circumference of the annular support portion 7 and a positioning post 92 protruding from the surface of the flange 91. The corresponding positioning post 92 in the positioning groove of the outer periphery of the limiting slot 8 is matched. Positioning holes. The positioning portion 9 is integrally formed with the annular support portion 7.

During the installation process of the bottom of the washing machine, the sealing ring 3 is placed in the limit slot 8 of the flange 2, and after the sealing ring 3 is in good contact with the inner bottom 1 and the flange 2, the inner bottom 1 and the flange 2 are bolted. Tightening the connection, the sealing ring 3 is sandwiched between the inner tub bottom 1 and the flange 2, so that the sealing ring 3 is in close contact with the inner tub bottom 1 and the flange 2, and the structure enables the sealing ring 3 to be in the process of bolt fastening The extrusion deformation does not occur, and the phenomenon that the sealing ring 3 is squeezed out of the limit sinking groove 8 is avoided, and the annular support portion 7 and the positioning portion 9 make the cooperation process of the sealing ring 3 and the limit sinking groove 8 more convenient, saving time and The workload, and avoid unnecessary mistakes in the process. During the operation of the washing machine, the sealing ring 3 will be subjected to a torque force between the inner tub bottom 1 and the flange 2, and the gap between the annular groove 6 of the sealing ring 3 or the inner and outer annular sealing ribs 4 can The deformation of the annular sealing rib 4 under the torque force is accommodated, and the sealing effect of the sealing ring 3 is further ensured. The sealing ring adopted by the invention can effectively solve the problem of sealing the bottom flange of the barrel in the washing machine, and at the same time ensure the sealing effect and the service life.

The above is only a preferred embodiment of the present invention, and it should be noted that various modifications and improvements can be made by those skilled in the art without departing from the principles of the present invention. The scope of protection of the invention.

Claims

The utility model relates to a flange bottom sealing installation structure of a washing machine, comprising an inner barrel bottom, a flange and a sealing ring, wherein the flange and the inner bottom of the inner barrel are provided with an annular limiting slot, and the sealing ring is positioned. The clamp is placed in the limit sink.
1 . The inner bottom flange sealing installation structure of a washing machine according to claim 1 , wherein the sealing ring is a flat annular structure, and at least one of an upper surface and/or a lower surface of the sealing ring is respectively provided. The ring seals the ribs.
The inner bottom flange sealing installation structure of a washing machine according to claim 2, wherein the sealing ring and the flange are provided with a matching positioning structure. Preferably, the positioning structure comprises a sealing ring disposed on the sealing ring. The positioning protrusion and the positioning groove disposed on the flange and matching the positioning protrusion, more preferably, the positioning protrusion integrally protrudes from the outer circumference of the sealing ring, and the gap formed on the outer surface of the limiting slot is formed to form the positioning groove.
The inner bottom flange sealing installation structure of a washing machine according to claim 1 or 2, wherein the upper surface and/or the lower surface of the sealing ring is provided with an annular groove, and the annular groove is provided with an annular seal. The rib, the height of the annular sealing rib is greater than the depth of the annular groove.
The inner bucket flange sealing installation structure of a washing machine according to claim 4, wherein the annular groove has a radial width of 1/6-1/2 times the radial width of the sealing ring, and the annular concave The depth of the groove is 1/6-1/2 times the height of the sealing ring, the height of the annular sealing rib is 1.1-2 times the depth of the annular groove, and the radial width of the annular sealing rib is the radial width of the annular groove. 1/4-1/2 times.
The inner bucket flange sealing installation structure of a washing machine according to claim 1, wherein the sealing ring is a flat ring structure, and comprises an annular support portion supported by the limit sinking groove and the method The blue and/or inner bottom of the barrel is compressed to fit the annular seal, and the annular seal protrudes from the surface of the annular support.
The inner tub flange sealing installation structure of the washing machine according to claim 6, wherein the annular support portion has a rectangular cross section, and the annular seal portion protrudes from the upper surface and the lower surface of the annular support portion.
The inner bucket bottom flange seal mounting structure of a washing machine according to claim 6, wherein the radial width of the annular seal portion decreases from one end of the annular support portion to the other end, and the top radial width of the annular seal portion The smallest, preferably, top section of the annular seal is a circular chamfered structure.
A bottom flange sealing installation structure for a washing machine according to any one of claims 6-8, characterized in that: the surface of the annular support portion is respectively provided with annular grooves on both sides of the annular sealing portion, and the annular groove constitutes a ring shape. The sealing portion compresses the deformation accommodating space.
The sealing structure of the inner bottom flange of the washing machine according to any one of claims 6-9, wherein the sealing ring further comprises at least one positioning portion disposed on the outer circumference of the annular supporting portion, and the outer periphery of the retaining groove is fixed. A positioning groove is integrally formed with the positioning portion.