WO2020078278A1

WO2020078278A1 - Balance ring mounting structure, inner tub having same and washing machine

Info

Publication number: WO2020078278A1
Application number: PCT/CN2019/110822
Authority: WO
Inventors: 吕佩师; 刘尊安; 王玲臣
Original assignee: 青岛海尔洗衣机有限公司
Priority date: 2018-10-18
Filing date: 2019-10-12
Publication date: 2020-04-23
Also published as: CN111074490A

Abstract

A balance ring mounting structure, an inner tub having same and a washing machine. The balance ring mounting structure comprises a balance ring (1) and a tub body (2). The balance ring (1) is mounted on an upper opening of the tub body (2). An inward convex support portion (3) is provided at the periphery of the upper end of the tub body (2). An overlap portion (4) overlapped on the support portion (3) is provided at the outer periphery of the balance ring (1). A sealing element (5) is sandwiched between the support portion (3) and the overlap portion (4). The tub body (2) is rotatably riveted to the balance ring (1). A groove structure (6) stamped from outside to inside is provided at the periphery of the upper end of the tub body (2), an opening faces towards the outside of the periphery of the tub body (2), and the groove bottom is protruded inward the tub body (2). The support portion (3) is located above the groove structure (6). A water outlet (7) is formed below the support portion (3) of the inner tub of the washing machine. During dewatering, water in the tub climbs upwards under the centrifugal force and is guided to the outside of the tub from the water outlet (7). The washing machine is sealedly connected between the inner tub and the balance ring (3) to prevent water splashing between the inner tub and the balance ring (3) to cause potential safety hazard. The structure is simple, the sealing effect of the inner tub is good, and the dewatering is rapid.

Description

Balance ring installation structure and inner barrel and washing machine with the structure

Technical field

The invention relates to the field of washing machines, in particular to the inner tub of the washing machine, in particular to a balance ring installation structure and the inner tub and washing machine having the structure.

Background technique

The existing pulsator type washing machine, as shown in FIG. 1, generally includes a pulsator 1 ′, an inner tub 2 ′, an outer tub 3 ′, and an outer shell 4 ′ that are sequentially arranged from inside to outside, wherein the pulsator 1 ′ is disposed in the inner tub The center of the bottom of 2 'can be driven by the driving device 5' to rotate. A balance ring 6 'is provided on the top of the inner barrel 2', a plurality of rows of dewatering holes 21 'are longitudinally provided on the side wall of the inner barrel 2', and a drain hole 22 'is provided on the bottom of the inner barrel 2'. The output shaft 51 'of the drive device 5' penetrates.

The washing machine starts to work, the drain valve 8 'is closed, and the water flows into the inner tub 2'. When the inner water fills the inner tub 2 ', the water also fills the entire outer tub 3' through the dehydration hole 21 'on the side wall of the inner tub 2', that is, Between the bottom of the outer tub 3 'and the bottom of the inner tub 2', and between the side wall of the outer tub 3 'and the side wall of the inner tub 2' are filled with water; after reaching the set water level, the water intake is stopped and the washing machine starts washing, specifically, The driving device 5 'drives the pulsator 1' to reciprocate. Under the rotation of the pulsator 1 ', the water and clothes in the inner tub 2' will roll over, and the clothes rub against each other. The side walls produce repeated friction to achieve the purpose of washing; after washing, the washing machine needs to drain the water flow in the tub and then dehydrate the laundry. Specifically, when draining, open the drain valve 8 ', the outer tub 3' and the inner tub 2 ' The water flow between the bottom of the outer barrel 3 'is drained out of the outer shell 4' through the drain port 7 'at the bottom of the outer barrel 3', the drain valve 8 ', and the drain pipe 9', and at the same time, the water in the inner barrel 2 'is discharged from the outer barrel 3 through the dehydration hole 21' 'Keep the liquid level consistent until the water in the inner barrel 2' flows down Move from the drain hole 22 'at the bottom of the inner tub 2' to the outer tub 3 ', and then discharge from the drain 7' at the bottom of the outer tub 3 '; during dehydration, the driving device 5' drives the inner tub 2 'to rotate at high speed and the clothes Under the action of centrifugal force, the moisture is discharged from the dehydration hole 21 'on the side wall of the inner tub 2' and the drain hole 22 'on the bottom to the outer tub 3', and then discharged out of the washing machine through the drain 7 'and the drain 9'.

Due to the existing pulsator-type washing machine, when washing, the inner wall of the inner tub and the outer tub must be filled with water, and this part of the water between the inner and outer tubs does not participate in washing. The water that really participates in washing is only the water in the inner tub. In part, this causes a lot of waste of water resources. In addition, too much water between the inner and outer buckets will also reduce the concentration of detergent / washing powder in the washing liquid.

Many manufacturers have improved the above defects and introduced a water-saving washing machine, that is, there is no leaking small hole in the inner wall of the inner wall of the bucket, and the washing and rinsing water are all concentrated in the non-porous inner bucket, making it both water-filled and washing The barrel is also a centrifugal dehydration barrel (also called a non-porous inner barrel). The outer bucket of the non-porous water-saving washing machine is actually just a channel that collects the water from the non-porous inner bucket during dehydration. When draining, the inner bucket speed is increased by centrifugal force, and the water in the bucket rises along the inner bucket wall and drains from the upper balance ring of the inner bucket. The hole is discharged; or the lower part of the inner bucket is provided with a controllable opening and closing drain, and most of the water is discharged from the drain; during centrifugal dehydration, the non-porous inner bucket rotates at a high speed, and the residual water in the clothes is along the non-porous hole under the action of the centrifugal force The barrel wall of the inner barrel is upward, thrown into the outer barrel through the drain hole, and discharged through the drain port and the drain pipe at the bottom of the outer barrel. Since the water in the “interlayer” of the inner and outer buckets of the traditional washing machine is saved, the water saving effect can reach more than 50% on average.

However, in this water-saving washing machine, the drain holes in the upper part of the inner tub are mostly provided on the wall of the inner tub. Due to the small number of drain holes, otherwise, the strength of the inner tub becomes poor, the total area of the drain holes is small, and the drainage capacity is limited. The rotating centrifugal force makes most of the water exceed the height of the drain hole, and finally this part of the water falls and remains in the inner bucket, resulting in more residual water in the laundry and poor dehydration effect. Some manufacturers have made some improvements, such as the structure of the inner barrel and the drain hole of a water-saving washing machine disclosed in Chinese patents with application numbers CN200820003576.3 and CN201020691475.7.

Although the above structure uses the balance ring to cooperate with the inner bucket to form a new drainage structure, so that the rising water can be directly discharged, but during the dehydration process, the inner bucket rotates at a high speed, and the clothes in the inner bucket dehydrates and climbs up along the wall of the bucket. Splashed in the installation gap between them, splashed to the outside of the outer barrel, causing potential safety hazards. This is because:

1. The sealing effect of the inner barrel body of the existing washing machine and the balance ring is not good.

The sealing scheme depends on the matching precision of the size of the barrel and the balance ring. However, in actual production, due to the existence of tolerances and the large water pressure thrown out during high-speed dehydration, the water pressure directly acts between the barrel and the balance ring, and there may still be water leakage.

The first reason is that it is difficult to achieve the target size with the size matching;

The second reason is that the grommet screw is fastened within the connection area. Due to the thin material of the inner barrel, the barrel is inevitably deformed during tightening, which destroys the regular shape of the bonding surface and makes the sealing effect poor. .

Second, the screw fixing the barrel and the balance ring is prone to water leakage.

Since the screw that fixes the barrel and the balance ring is fastened within the connection area, the screw is still in the area where water can reach, even if the screw itself is provided with sealing measures, due to the existence of tolerances and the high water pressure thrown out during high-speed dehydration , The screw is still leaking during dehydration.

In view of this, the present invention is specifically proposed.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and to provide a balance ring installation structure that can overcome the above problems.

In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a balance ring installation structure, including a balance ring and a barrel body, the balance ring is installed at the upper opening of the barrel body, and a circumferential inward protrusion is provided on the upper wall of the barrel body The outer peripheral wall of the balance ring is provided with a lapped portion lapped on the support portion, a seal is interposed between the support portion and the lapped portion, and the barrel body is rotationally riveted to the balance ring.

Wherein, the peripheral wall of the upper end of the barrel is provided with a concave groove structure punched from the outside to the inside, the opening faces the outside of the peripheral wall of the barrel body, the groove bottom protrudes toward the inside of the barrel body, and the supporting portion is located above the concave groove structure.

Further, the support portion and the concave groove structure are an integrated structure, and the upper side wall of the concave groove structure constitutes the support portion.

Furthermore, the peripheral wall of the upper end of the barrel body is provided with a water outlet, and the water outlet is located below the concave groove structure.

In one embodiment, the supporting portion and the overlapping portion are inclinedly overlapped, and the supporting surface of the supporting portion supporting the overlapping portion is inclinedly arranged inward from the barrel body from top to bottom.

In one embodiment, the supporting portion and the overlapping portion are overlapped by a platform, and the supporting surface of the supporting portion supporting the overlapping portion is arranged parallel to the radial direction of the barrel body.

In addition, the barrel extends from the support portion to the upper end to form a connecting portion that cooperates with the outer peripheral wall above the overlapping portion of the balance ring, and the connecting portion is riveted to the outer peripheral wall of the balance ring;

In one embodiment, an annular boss is provided on the outer peripheral wall above the overlapping portion of the balance ring, and the connecting portion is connected to the annular boss by riveting;

In another embodiment, at least one ring of sealing unit is further provided between the connecting portion and the annular boss.

At the same time, the outer peripheral wall connecting the balance ring and the barrel body forms a step structure along the axial direction, including at least three steps, and the outer diameters of the first step, the second step, and the third step increase in sequence, wherein the first The position where the step extends to the second step constitutes the overlapping portion, the second step above the overlapping portion is sleeved by the peripheral wall of the upper portion of the barrel support portion, and the third step constitutes a ring boss structure on the outer peripheral wall of the balance ring, the barrel The inner wall of the upper end cooperates with the outer surface of the third step to rotate riveting;

In an embodiment, the minimum inner diameter of the support portion is larger than the outer diameter of the first step and smaller than the outer diameter of the second step;

In another embodiment, a sealing unit is provided between the inner wall of the upper end of the barrel and the upper surface and / or lower surface of the third step.

The invention provides an inner tub of a washing machine, which is a water tub during washing, has the above-mentioned balance ring installation structure, and a water outlet is provided below the support part. During dehydration, the water in the tub climbs upward by centrifugal force directly or indirectly from the water outlet Conduct water to the outside of the bucket.

The invention also provides a washing machine, including an outer shell, having the inner tub of the washing machine described above, and a water receiving device for receiving water is provided on the outside of the inner tub. During dehydration, water derived from the water outlet of the inner tub is collected by the water receiving device and then discharged from the washing machine .

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

1. In the present invention, a concave groove structure is provided on the upper side of the water outlet to prevent the water dewatered by the dehydration from entering the gap between the balance ring and the barrel body when the inner barrel rotates at a high speed, blocking the water dehydrated by the dehydration at the lower part of the concave groove structure , So that the water is directly discharged from the water outlet;

2. The barrel body is provided with an inclined sealing and matching structure, and the balance ring is provided with a step to install the seal, so that the seal assembly is pressed down and tightened to seal. During assembly, the balance ring is assembled with the seal down to the barrel body, because the barrel body is inclined The more the structure is pressed, the tighter the sealing fit, the better the sealing effect;

3. The barrel wall and the balance ring are connected to the inclined barrel wall through multiple steps, and the concave groove structure protruding toward the inner wall of the barrel body enhances the ability of the barrel wall to withstand stress, so that the barrel wall can withstand in the dehydration operation Stronger force, thereby increasing the rigidity of the inner barrel and improving the dewatering performance;

4. Set the rotary riveting structure to eliminate the fastening screws of the balance ring and the barrel. During the rotary riveting, the riveting equipment can be used to perform riveting according to the actual size of the balance ring, thereby eliminating the deviation caused by the size tolerance of the balance ring;

5. The riveting structure of the barrel body and the balance ring is provided with a sealing unit, which further enhances the sealing effect.

The specific implementation of the present invention will be described in further detail below with reference to the drawings.

BRIEF DESCRIPTION

As a part of the present invention, the drawings are used to provide a further understanding of the present invention. The schematic embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation on the present invention. Obviously, the drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

In the drawings:

Figure 1 is a schematic diagram of the structure of a prior art washing machine;

2 is a schematic diagram of an inner barrel with a balance ring installation structure of the present invention;

FIG. 3 is a partially enlarged schematic view at A in FIG. 2;

Fig. 4 is a partial schematic view of another embodiment of the gimbal mounting structure of the present invention.

The labels in the drawings of the present invention: 1. Balance ring; 101, first step; 102, second step; 103, third step; 2. barrel; 3. support part; 4. overlapping part; 5. seal 6. Concave groove structure; 7. Water outlet; 8. Connection part; 9. Ring boss; 10. Sealing unit.

It should be noted that these drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to explain the concept of the present invention to those skilled in the art by referring to specific embodiments.

detailed description

To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , But not to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only to facilitate the description of the present invention and simplify the description, rather than to indicate or imply that the device or element referred to must have a specific orientation, a specific orientation The construction and operation cannot be understood as a limitation of the present invention.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or connected integrally; either directly or indirectly through an intermediary. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.

In the prior art, when washing a pulsator-type washing machine, the side walls of the inner tub and the outer tub need to be filled with water, and this part of the water between the inner and outer tubs does not participate in washing. The water that really participates in washing is only the water in the inner tub. In part, this causes a great waste of water resources. In addition, too much water between the inner and outer buckets will also reduce the concentration of detergent / washing powder in the washing liquid. Many manufacturers have improved the above defects and introduced a water-saving washing machine, namely The inner wall of the inner bucket has no leaking holes for throwing water. All washing and rinsing water is concentrated in the non-porous inner bucket, making it both a water-washing bucket and a centrifugal dewatering bucket (also called a non-porous inner bucket). The outer bucket of the non-porous water-saving washing machine is actually just a water receiving device that collects the water from the non-porous inner bucket during dehydration. When draining, the inner bucket speed is increased. Under the action of centrifugal force, the water in the bucket rises along the inner bucket wall and balances from the upper part of the inner bucket. The water outlet below the ring is discharged; or the lower part of the inner bucket is provided with a controllable opening and closing drain, and most of the water is discharged from the drain; during dehydration, the non-porous inner bucket rotates at high speed, and the remaining water in the clothes is driven by the centrifugal force. The wall of the barrel with the non-perforated inner barrel is upward, thrown out to the outer outer barrel through the water outlet, and discharged through the drain port and the drain pipe at the bottom of the outer barrel. Since the water in the “interlayer” of the inner and outer buckets of the traditional washing machine is saved, the water saving effect can reach more than 50% on average.

However, most of the water-saving washing machines have the water outlet in the upper part of the inner tub on the wall of the inner tub. Due to the small number of water outlets, otherwise, the strength of the inner tub becomes poor, the total area of the water outlet is small, and the drainage capacity is limited. The rotating centrifugal force makes most of the water exceed the height of the water outlet, and finally this part of the water falls and remains in the inner bucket, resulting in more residual water in the laundry and poor dehydration effect. In response to the above technical problems, the present invention proposes the following technologies Program.

As shown in FIGS. 2 to 4, the balance ring installation structure of the present invention includes a balance ring 1 and a barrel body 2. The balance ring 1 is installed at the upper opening of the barrel body 2, and a circumferential wall on the upper end of the barrel body 2 is provided with an inward protrusion The supporting portion 3, the outer peripheral wall of the balance ring 1 is provided with a lap portion 4 lapped on the support portion 3, a seal 5 is interposed between the support portion 3 and the lap portion 4, a barrel body 2 and the balance ring 1 Rotary riveting; the seal 5 is clamped between the inner barrel and the balance ring 1 by the support portion 3, and the support portion 3 is pressed by the overlapping portion 4 to achieve the seal of the balance ring 1 and the inner barrel, avoiding water from the balance ring 1 and the The gap between the inner tubs flows back into the inner tubs, which causes too much residual water in the clothes, which leads to the problem of poor dehydration effect. The sealing member 5 may be a sealing ring, such as a rubber sealing ring, or a sealing structure such as sealant. When the balance ring is installed, the balance ring 1 is assembled with the sealing member 5 pressed down toward the barrel body 2, and the lower the pressure, the tighter the sealing fit between the overlapping portion 4 and the support portion 3, the better the sealing effect of the sealing member 5 .

Further, the present invention provides an inner tub of a washing machine having the above-mentioned balance ring installation structure, specifically, a water outlet 7 is provided below the support portion 3, and during dehydration, the water in the tub is climbed upward by centrifugal force from the outlet The water outlet 7 directs water directly or indirectly to the outside of the bucket, and the support portion 3 effectively ensures that during dehydration, water flows out of the water outlet 7 without climbing up to the gap between the balance ring 1 above the support portion and the barrel body 2 After the dehydration is completed, it is returned to the inner tub, resulting in too much residual water in the laundry, which leads to the problem of poor dehydration effect. The inner barrel of the present invention is provided with a design structure in which the support portion and the water outlet cooperate, and the water thrown out at a stage of high dehydration can be blocked by the support portion of the present invention and directly discharged from the water outlet, so that the water thrown out cannot reach the barrel body and The grommet fits to achieve high-speed stage sealing.

Furthermore, a washing machine includes an outer shell and an inner tub of the washing machine described above. A water receiving device (not shown) is provided outside the inner tub. During dehydration, the water discharged from the water outlet 7 of the inner tub After being collected by the water receiving device, it is discharged from the washing machine.

The water receiving device is connected to the outer shell of the washing machine through a vibration damping unit (not shown in the figure). The water receiving device supports the inner tub, not only makes the inner tub rotatably arranged in the outer shell, but also collects the washing water discharged from the inner tub. The drainage unit communicating with the water receiving device is discharged to the outside of the washing machine. The vibration damping unit may adopt the boom vibration damping structure of the existing pulsator washing machine, or may adopt a damping vibration damping structure installed under the water receiving device and supported upward, or a combination of the above.

The water receiving device is a barrel-shaped structure, a disk-shaped structure, or is composed of a support plate supported under the inner barrel and an annular rib arranged above the support plate; the outer barrel of the existing washing machine or the one lower than the upper edge of the inner barrel can also be used Groove structure.

During dehydration, the water in the inner bucket can be directly thrown out of the water outlet into the water receiving device, or a water guide pipe can be provided from the top to the bottom of the inner wall of the inner barrel, including the inside or outside of the inner wall. Divert the water into the water receiving device.

As an embodiment of the present invention, as shown in FIGS. 2 to 4, a balance ring installation structure according to the present invention includes a balance ring 1 and a barrel body 2. The balance ring 1 is installed at the upper opening of the barrel body 2 , The peripheral wall of the upper end of the barrel 2 is provided with a circle of inwardly protruding support parts 3, and the outer peripheral wall of the balance ring 1 is provided with overlapping parts 4 overlapping on the supporting parts 3, and the supporting parts 3 are sandwiched between the overlapping parts 4 A sealing member 5 is provided, and the peripheral wall of the barrel body 2 continues to extend upward from the supporting portion 3 and is rotationally riveted to the outer peripheral wall of the balance ring 1. Specifically, the overlapping portion 4 is the connection portion of the balance ring 1 and the sealing member 5, wherein the upper peripheral wall of the barrel 2 is provided with a concave groove structure 6 punched from the outside to the inside, and the opening faces the outside of the peripheral wall of the barrel 2 , The bottom of the groove protrudes toward the inside of the barrel body 2, the supporting portion 3 is located above the concave groove structure 6, the sealing portion 5 is clamped between the inner barrel and the balance ring 1 by the supporting portion 3, and the overlapping portion formed by extrusion 4 Seal the balance ring 1 and the inner barrel.

In the present invention, a concave groove structure 6 is arranged on the upper peripheral wall of the barrel body 2, and a water outlet 7 is provided on the lower side of the concave groove structure 6, so that the water flowing upward along the inner wall of the barrel body in the high-speed dehydration stage is blocked by the concave groove structure 6 at the lower part. The water is directly discharged from the water outlet 7 to prevent the water from flowing upward into the matching joint of the balance ring 1 and the barrel body 2 to minimize the possibility of leakage and improve the sealing effect.

A further solution is that the supporting portion 3 and the concave groove structure 6 of the present invention are an integrated structure, and the strength of the barrel body is enhanced through the integrally formed arrangement to avoid the balance ring caused by the insufficient rigidity of the barrel body during the dehydration operation The assembly and deformation of the barrel body affects the dewatering performance. At the same time, the upper side wall of the concave groove structure 6 forms a support portion 3, and the upper peripheral wall of the barrel body 2 is provided with a water outlet 7 which is located below the concave groove structure 6. During the dewatering operation of the inner tub, the water escaping from the clothes flows upward from the wall of the tub, partly flows out of the water outlet 7 and partly continues to flow upward to the concave groove structure, and is blocked by the concave groove structure and flows directly out of the water outlet 7, that is That is to say, the water outlet 7 is provided in the lower part of the concave groove structure, which can improve the dehydration efficiency and prevent water from flowing into the installation gap between the balance ring 1 and the barrel body 2 and leaking to the outside of the water receiving device.

As shown in FIG. 3, the supporting portion 3 and the overlapping portion 4 of the present invention are inclined and overlapped. The supporting surface of the supporting portion 3 supporting the overlapping portion 4 is inclined from the outside of the barrel 2 to the inward direction from top to bottom. It can be clearly seen from FIG. 3 that the position where the support portion 3 contacts the seal 5 is inclined, and such a configuration enhances the force direction and state of the peripheral wall of the barrel and the seal 5, combined with the shape of the support portion 3 The arrangement enhances the strength of the barrel body and the sealing effect of the sealing member 5. The barrel body 2 is provided with an inclined sealing and matching structure, and the balance ring 1 is provided with a stepped installation of the sealing member 5, to achieve a tighter and tighter seal as the sealing member 5 is assembled. During assembly, the balance ring 1 is assembled on the barrel body 2 with the sealing member 5. Due to the inclined structure of the barrel body 2, the lower the pressure, the tighter the sealing fit and the better the sealing effect. At the same time, the structure is easy to assemble, the accuracy requirements can be reduced, and it is more conducive to large-scale production.

As an alternative to the above, as shown in FIG. 4, the supporting portion 3 and the overlapping portion 4 of the present invention are overlapped by a platform. The supporting surface of the supporting portion 3 supporting the overlapping portion 4 is parallel to the radial direction of the barrel 2 It can be seen from FIG. 4 that the contact part of the support part 3 and the sealing member 5 is arranged in parallel and connected with the concave groove structure. The characteristic of this type of arrangement is that it takes up little space, and the balance ring 1 pair of sealing members 5 The vertical downward pressure is applied, and the supporting portion with the platform overlapping constitutes a water blocking structure, which makes the sealing effect better.

As an embodiment of the present invention, as shown in FIGS. 3 and 4, the barrel 2 of the present invention extends from the supporting portion 3 to the upper end to form a connecting portion that cooperates with the outer peripheral wall above the overlapping portion 4 of the balance ring 1 8. Rotating and riveting to the outer peripheral wall of the balance ring 1 through the connecting portion 8.

A further solution is that an annular boss 9 is provided on the outer peripheral wall above the balance ring overlapping portion 4, and the connecting portion 8 is connected to the annular boss 9 by riveting. The invention is provided with a rotary riveting structure to eliminate the fastening screws of the balance ring and the barrel body. During riveting, the riveting equipment can be used to perform riveting according to the actual size of the balance ring, thereby eliminating the deviation caused by the size tolerance of the balance ring.

A still further solution is that the present invention provides a sealing unit 10 on the upper or lower surface of the annular boss 9 of the balance ring. The sealing unit 10 may be a sealing groove or a sealing ring. The sealing groove or the sealing ring may be provided with one or more Pcs. It can be set individually or in combination.

The above specific solution is that the outer peripheral wall connecting the balance ring 1 and the barrel 2 of the present invention forms a step structure along the axial direction, including at least three steps, a first step 101, a second step 102, and a third step 103 The outer diameter of φ increases sequentially, wherein the position where the first step 101 extends toward the second step 102 constitutes the overlapping portion 4, and the second step 102 above the overlapping portion 4 is sleeved by the peripheral wall of the upper portion of the supporting portion 3 of the barrel body 2, The third step 103 constitutes a round boss structure on the outer peripheral wall of the balance ring 1, and the inner wall of the upper end of the barrel body 2 is rotationally riveted in cooperation with the outer surface of the third step 103. The multi-step setting makes the connection strength between the balance ring 1 and the barrel body 2 higher, and at the same time, the multi-step steps are applied to the seal 5 in different directions, which enhances the sealing effect. In general, the barrel body 2 Connected with the balance ring 1 through the multi-steps and the inclined barrel wall, which enhances the stress bearing capacity of the barrel body peripheral wall, so that during the dehydration operation, the barrel body can withstand a stronger force and improve the rigidity of the inner barrel, thereby improving dehydration performance.

A further solution is that the minimum inner diameter of the supporting portion 3 of the present invention is larger than the outer diameter of the first step 101 and smaller than the outer diameter of the second step 102, and the inner diameter of the supporting portion 3 is the same as that of the first step 101 and the second step 102. The structure is matched to ensure that the support portion 3 is placed between the first step 101 and the second step 102 on the side of the concave groove structure, so as to squeeze the seal 5 so that the balance ring 1 and the inner wall of the barrel 2 Sealing is achieved, at the same time, the barrel 2 is provided with an inclined sealing fit structure, and the balance ring 1 is provided with a step to install the seal 5 to achieve a tighter seal as the seal 5 is assembled. The balance ring 1 carries the seal 5 toward the barrel during assembly 2 Press-down assembly, due to the existence of the inclined structure of the barrel body 2, the lower the pressure, the tighter the sealing fit and the better the sealing effect.

Preferably, in order to improve the sealing effect of the present invention, a sealing unit 10 is further provided between the inner wall of the upper end of the barrel 2 and the upper surface and / or the lower surface of the third step 103. The sealing unit 10 may be a sealing groove or a sealing ring , One or more sealing grooves or sealing rings can be provided. It can be set individually or in combination.

A further solution is that, as shown in FIG. 2, an inner tub of a washing machine according to the present invention is a water tub during washing, which has the above-mentioned balance ring installation structure, and a water outlet 7 is provided below the supporting part 3, and when dehydrating, The water in the bucket climbs upward by centrifugal force and guides the water from the water outlet 7 to the outside of the bucket.

A further solution is that a washing machine (not shown in the drawings) of the present invention includes an outer shell, and has an inner tub of the washing machine described above, and a water receiving device for receiving water is provided outside the inner tub. The water discharged from the water outlet is collected by the water receiving device and then discharged out of the washing machine.

The above is only the preferred embodiments of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed in the preferred embodiments as above, it is not intended to limit the present invention. Any technology familiar with this patent Personnel can use the technical content of the above tips to make some changes or modifications to equivalent embodiments without departing from the scope of the technical solution of the present invention, but any content that does not deviate from the technical solution of the present invention is based on the technology of the present invention In essence, any simple modifications, equivalent changes, and modifications made to the above embodiments still fall within the scope of the present invention.

Claims

A balance ring installation structure includes a balance ring (1) and a barrel body (2). The balance ring (1) is installed at the upper opening of the barrel body (2), and is characterized in that: a circle is provided on the upper peripheral wall of the barrel body (2) The supporting portion (3) protruding inwards, the outer peripheral wall of the balance ring (1) is provided with an overlapping portion (4) overlapping the supporting portion (3), the supporting portion (3) and the overlapping portion (4) There is a seal (5) sandwiched between the barrel body (2) and the balance ring (1).
The balance ring installation structure according to claim 1, characterized in that: the upper peripheral wall of the barrel (2) is provided with a concave groove structure (6) punched from the outside to the inside, and the opening faces the outside of the peripheral wall of the barrel (2) The bottom of the groove protrudes toward the inside of the barrel (2), and the supporting portion (3) is located above the concave groove structure (6).
The balance ring mounting structure according to claim 2, characterized in that the support portion (3) and the concave groove structure (6) are an integral structure, and the upper side wall of the concave groove structure (6) constitutes the support portion (3) ).
The balance ring installation structure according to claim 2 or 3, characterized in that the upper peripheral wall of the barrel (2) is provided with a water outlet (7), and the water outlet (7) is located below the concave groove structure (6) .
The gimbal mounting structure according to any one of claims 1 to 4, characterized in that: the supporting portion (3) and the overlapping portion (4) are inclined and overlapping, and the supporting portion (3) supports the overlapping portion The support surface of (4) is inclined from the outside to the inside of the barrel (2) from top to bottom.
The gimbal mounting structure according to any one of claims 1 to 4, characterized in that: the supporting portion (3) and the overlapping portion (4) are overlapped by the platform, and the supporting portion (3) supports the overlapping portion The support surface of (4) is arranged parallel to the radial direction of the barrel body (2).
The balance ring mounting structure according to claim 1, characterized in that the barrel (2) extends from the support portion (3) to the upper end to form an outer peripheral wall above the overlapping portion (4) of the balance ring (1) The cooperating connecting part (8), the connecting part (8) and the peripheral wall of the balance ring (1) are spin riveted.
The balance ring installation structure according to claim 7, characterized in that: an annular boss (9) is provided on the outer peripheral wall above the overlapping portion (4) of the balance ring (1), and the connecting portion (8) and the ring The boss (9) is riveted.
The balance ring installation structure according to claim 8, characterized in that at least one ring of sealing unit (10) is provided between the connecting portion (8) and the annular boss (9).
The balance ring installation structure according to any one of claims 1-9, characterized in that the outer peripheral wall connecting the balance ring (1) and the barrel body (2) forms a step structure along the axial direction, including at least three layers The outer diameters of the first step (101), the second step (102), and the third step (103) increase in sequence, wherein the position where the first step (101) extends toward the second step (102) constitutes an overlap Part (4), the second step (102) above the overlapping part (4) is sleeved by the peripheral wall of the upper part of the barrel (2) supporting part (3), and the third step (103) constitutes the outer wall of the balance ring (1) In a ring boss structure on the top, the inner wall of the upper end of the barrel body (2) and the outer surface of the third step (103) are co-rotated and riveted.
The balance ring mounting structure according to claim 10, characterized in that the minimum inner diameter of the support portion (3) is larger than the outer diameter of the first step (101) and smaller than the outer diameter of the second step (102).
The balance ring mounting structure according to claim 10, characterized in that a sealing unit (10) is provided between the inner wall of the upper end of the barrel (2) and the upper surface and / or lower surface of the third step (103).
An inner tub of a washing machine, which is a water tub during washing, characterized in that it has a balance ring installation structure according to any one of claims 1-12, and a water outlet (7) is provided below the supporting portion (3). The water in the bucket climbs upwards by centrifugal force and directs the water directly or indirectly to the outside of the bucket through the water outlet (7).
A washing machine, including an outer shell, characterized by having an inner tub as claimed in claim 13, a water receiving device for receiving water is provided on the outside of the inner tub, and when dehydrating, the water discharged from the water outlet (7) of the inner tub is received by the water receiving device Collect and drain the washing machine.