Technical Field
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The present invention belongs to the field of household appliances, and particularly relates to a washing machine, specifically, relates to a cleaning-free drum washing machine with a non-perforated inner drum.
Background
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Existing drum washing machine generally includes structures such as an inner drum, an outer tub, a housing, a damping system, a window gasket, and a machine door. The outer tub is supported and installed in the housing of the washing machine in a vibrating manner through the damping system, and the inner drum is coaxially arranged inside the outer tub. A driving device such as a motor is installed on the outer tub, and an output shaft of the motor is connected to the inner drum for driving the inner drum to rotate around an axis, so as to tumble and wash laundry placed inside. One end of the outer tub is closed to form an outer tub bottom, and the other end is provided with an opening to form an outer tub opening. The inner drum opening of the inner drum installed in the outer tub is on the same side and connected with the outer tub opening. The inner drum bottom is on the same side with the outer tub bottom, so that the inner drum bottom is connected to the motor shaft passing through the outer tub bottom, thereby laundry is taken into and out of the inner drum through the inner drum opening, and the motor drives the inner drum to rotate through the motor shaft.
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For the above-mentioned drum washing machine, generally dehydration outlets are formed on the inner drum, so that washing water flows back and forth between the inside and outside of the inner drum in a process of washing laundry, and washing water flowing into the inner drum can wash laundry in the inner drum. The inner drum is driven to rotate at high speed in dehydration process, and water attached on laundry in the inner drum is separated and flows out to the outer tub for discharge. However, since washing water flows back and forth between the inner drum and the outer tub, dirt in the gap between the inner drum and the outer tub flows back into the inner drum with the washing water flowing back and forth, causing secondary pollution to the washed laundry in the inner drum, and greatly affecting the washing effect of laundry.
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In order to overcome the above problems, a washing machine with free-cleaning is provided by the applicant, in which the inner drum of the drum washing machine is not provided with dehydration outlets. The inner drum rotates at high speed to open the dehydration outlet of the valve core, so that the inner drum has the function of holding water during washing and draining water during dehydration.
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However, the inner drum rotates at high speed in performing the dehydration in the above washing machine, and the water flow between the inner drum and the outer tub is splashed due to the action of the high-speed rotation of the inner drum. A part of the splashed water flows to the outer tub opening, and water remaining at the outer tub opening can flow out when the inner drum cover is opened by user, which greatly affects user's experience. If the outer tub opening is not sealed, water splashed to the outer tub opening can overflow from the gap between the outer tub opening and the housing of the washing machine out of the washing machine, and flows to the ground where the washing machine is placed, so that it is caused pollution to user's floor. In addition, after washing program of the washing machine is finished, water splashed to the outer tub opening remains at the outer tub opening, causing the growth of bacteria or odors in the outer tub.
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In view of the above, the present invention is proposed.
Summary
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The problem to be solved by the present invention is the deficiencies of the prior art, and a washing machine is provided to solve the problem of residual washing water at the outer tub opening of the drum washing machine with a non-perforated drum, thereby avoiding the overflow of dehydration water from the outer tub opening.
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In order to solve the above problem, the basic concept of the solutions adopted by the present invention is as follows.
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A washing machine includes: an outer tub; an inner drum arranged in the outer tub; and a water retaining ring protruding inward and arranged at an outer tub opening. An end of the water retaining ring protruding inward is extended at least to a vicinity of an outer wall of the inner drum, for blocking water between the inner drum and the outer tub from flowing to the outer tub opening.
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As an embodiment, one end of the outer tub is an outer tub opening flange forming the outer tub opening. One end of the inner drum is an inner drum opening flange forming an inner drum opening. The outer tub opening flange is a same side with the inner drum opening flange, and there is a gap between an inner side wall of the outer tub opening flange and an outer side wall of the inner drum opening flange. The water retaining ring is arranged in the gap between the inner drum opening flange and the outer tub opening flange. An outer peripheral side of the water retaining ring is fixedly connected to the inner side wall of the outer tub opening flange, and an inner peripheral side is arranged near the outer side wall of the inner drum opening flange.
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As an embodiment, a circle of a window gasket that at least wraps the outer tub opening is installed on the outer tub opening flange, and the outer peripheral side of the water retaining ring is fixedly connected to the window gasket.
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Or, the outer peripheral side of the water retaining ring is connected to the inner side wall of the outer tub opening flange.
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Optionally, the water retaining ring is integrated with the window gasket, or integrated with the outer tub opening flange.
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As an embodiment, the window gasket is in a shape of ring, an inner peripheral side of the window gasket wraps the outer tub opening; an outer peripheral side of the window gasket is located at the outer side wall of the outer tub opening flange and extended at least to the outer peripheral portion of the outer tub opening flange; the outer peripheral side of the water retaining ring is fixedly connected to the inner peripheral side of a fixed end of the window gasket.
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Optionally, the water retaining ring is a ring being coaxial with the outer tub opening, a radial dimension of the outer peripheral side of the water retaining ring is greater than a radial dimension of the outer tub opening, and a radial dimension of the inner peripheral side of the water retaining ring is smaller than the radial dimension of the outer tub opening and greater than a radial dimension of the inner drum opening.
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As an embodiment, a ring-shaped flange extending outward is arranged in a middle of the outer tub opening flange, an inner peripheral side of the ring-shaped flange forms the outer tub opening, and the inner peripheral side of the window gasket wraps the inner peripheral side of the ring-shaped flange. Preferably, at least one stepped portion that changes a radial dimension of the outer tub opening is arranged in the middle of the ring-shaped flange, and the stepped portion is provided with an annular fixing rib protruding toward the inside of the outer tub, and the inner peripheral end of the window gasket is correspondingly inserted into a gap between the annular fixing rib and the ring-shaped flange.
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Further preferably, a protruding end of the ring-shaped flange is provided with a protrusion protruding radially outward, and the window gasket is provided with a groove for the protrusion to be correspondingly inserted.
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As an embodiment, the inner peripheral end of the window gasket is provided with a water retaining ring with a shape of ring protruding inward along a radial direction of the outer tub opening, and the water retaining ring is extended vertically. An outer peripheral side of the water retaining ring is integrated with the window gasket or fixedly connected to the inner peripheral side of the window gasket, and a side wall of an inner peripheral side is configured to face the inside of the outer tub and close to the outer side wall of the inner drum opening flange. Preferably, the water retaining ring has an arc-shaped cross-section that gradually bends toward the rear of the outer tub from the inner peripheral side to the outer peripheral side, for guiding water to flow toward an outer tub wall.
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As an embodiment, the inner peripheral end of the window gasket is provided with an installation groove of which an opening faces toward the inside of the outer tub, and the outer peripheral side of the water retaining ring facing the outside of the outer tub is provided with an installation protrusion correspondingly inserted into the installation groove. Preferably, a cross-section of the installation groove is in a triangular, and a notch recessed inward is formed on both side walls of the triangular groove; the installation protrusion is in a same triangular shape with and correspondingly inserted into the installation groove, and a protrusion correspondingly inserted into the notch is provided on side walls of the triangular protrusion.
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As an embodiment, the middle of the inner drum opening flange is provided with a ring-shaped flange forming the inner drum opening. A ring-shaped flat portion is arranged in an outer peripheral area around the inner drum opening of the inner drum opening flange, and the ring-shaped flat portion is flush with the inner side of the outer tub opening flange. The inner side, of at least the inner peripheral portion of the water retaining ring, facing the inside of the outer tub is arranged close to the ring-shaped flat portion.
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As an embodiment, an inner drum cover capable of opening and closing the inner drum opening is installed on the inner drum, and an outer peripheral portion of the inner drum cover is configured to protrude from the inner drum opening. at least part of the window gasket with a shape of ring overlaps with a projection of the outer peripheral portion of the inner drum cover on the outer tub opening flange. Preferably, an outer peripheral buffer end of the window gasket is protruded from the outer peripheral portion of the inner drum cover in a radial direction of the outer tub opening, and a buffer chamber with a hollow inside is formed between the outer peripheral buffer end of the window gasket and the outer tub opening flange, for reducing the stress generated by the outer tub opening flange being in contact with the housing of the washing machine.
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As an embodiment, a water receiving groove protruding toward a front side of the outer tub and opening radially toward the outer tub opening is arranged on an outer of the outer tub opening flange, and the water receiving groove covers at least a lower range of the outer tub opening. Preferably, the water receiving groove is integrated with the window gasket. Preferably, the water receiving groove is located in an outer area of the inner drum cover. Further preferably, a residual water outlet is arranged at a lowest of the water receiving groove, and the residual water outlet is in communication with the lower of the outer tub, and a connection between the residual water outlet and the outer tub is located below the water retaining ring.
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After adopting the above solutions, the present invention have the following advantages compared with the prior art.
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By arranging a water retaining ring at the outer tub opening of the washing machine, the water retaining ring can shield the gap between the outer tub opening and the inner drum opening, effectively avoiding the splashed water in the gap between the inner drum and outer tub from flowing out from the gap between the openings. Accordingly, the phenomenon of residual water accumulating at the outer tub opening cannot happen during the operation of the drum washing machine with a non-perforated drum, thereby it is avoided the problems such as water overflow and odor generation in the washing machine.
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Additionally, the washing machine provided by the present invention has a simple structure, significant effect, and is intended to be promoted and used.
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The specific Embodiment of the present invention is described in further detail below with reference to the accompanying drawings.
Description of Drawings
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The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present application and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. The drawings described below are only some embodiments. For those skilled in art, other drawings can be obtained based on these drawings without creative work. In the drawings:
- Figure 1 is a schematic diagram of a partial structure of a washing machine in an Embodiment of the present invention;
- Figure 2 is a front view of a partial structure of a washing machine in an Embodiment of the present invention;
- Figure 3 is a schematic diagram of a partial structure of the washing machine with an inner drum cover of the present invention from a A-A sectional view of Figure 2;
- Figure 4 is an enlarged schematic diagram of position B in Figure 3;
- Figure 5 is an enlarged schematic diagram of position B in Figure 3 of another Embodiment of the present invention.
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Description of main components in the figures: 100, outer tub; 200, inner drum; 300, inner drum cover; 101, outer tub opening flange; 102, outer tub opening; 201, inner drum opening flange; 202, inner drum opening; 1, water retaining ring; 2, window gasket; 3, water receiving groove; 4, inner peripheral fixed end; 5, outer peripheral buffer end; 6, buffer chamber; 7, installation groove; 8, installation protrusion; 9, ring-shaped flat portion; 10, ring-shaped flange; 11, stepped portion; 12, fixing rib; 13, protrusion; 14, groove; 15, residual water outlet.
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It should be noted that these drawings and descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the solutions of the present invention to those skilled in the art by reference to specific embodiments.
Detailed Description
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In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments are clearly and completely described below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not used to limit the scope of the present application.
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In the description of the present application, it should be noted that the directions or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.
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In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
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The present invention is further described in detail below in conjunction with the Embodiments.
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As shown in Figures 1 to 5, a washing machine includes: an outer tub 100, vibratably installed in a housing of the washing machine via a damping assembly, wherein the damping assembly can be the existing damping rod, hanging spring, etc.; a drive motor installed on a rear side of a rear end of the outer tub. A motor shaft of the drive motor can be directly or via a reduction clutch connected to an inner drum 200, and is used to drive the inner drum 200 to rotate to perform washing and other treatments on laundry in the inner drum 200.
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The inner drum 200 is arranged in the outer tub 100. An opening of the inner drum 200 is in a same side with an opening of the outer tub 100, and a rear end of the inner drum 200 is in a same side with a rear end of the outer tub 100. The inner drum 200 and the outer tub 100 are generally arranged coaxially. An inner drum cover 300 is installed on the inner drum 200, and the inner drum cover 300 can open and close an inner drum opening 202. The inner drum 200 is not provided with a dehydration outlet being normally opened, so that the inner drum 200 forms a sealed water container for the washing machine to use for washing after the inner drum opening 202 is closed by the inner drum cover 300. When the washing machine performs dehydrating, a valve plug blocking the dehydration outlet can be opened under the centrifugal force generated by the high-speed rotation of the inner drum 200 for drainage, so that washing water does not flow between the inside and the outside of the inner drum during washing, thereby effectively avoiding the occurrence of secondary pollution of laundry by the dirt between the inner drum and the outer tub. The inside of the inner drum is in communication with the inside of the outer tub 100 by the dehydration outlet of the inner drum 200 being opened by the valve plug, and the lower part of the outer tub 100 is connected to a drain pipe, so that water discharged from the inner drum 200 flows out of the washing machine through the space between the inner drum and the outer tub and then through the drain pipe.
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However, when the washing machine performs dehydrating, the inner drum 200 rotates at high speed, and water being drained between the inner drum and the outer tub is affected by the high-speed rotation of the inner drum 200 to cause splashing. A part of the splashed water flows to the outer tub opening 102, and water remaining at the outer tub opening 102 flows out when user opens the inner drum cover 300, which greatly affects user's experience. If the outer tub opening 102 is not sealed, water splashed to the outer tub opening 102 will overflow out of the washing machine from the gap between the outer tub opening 102 and the housing of the washing machine, and spreads to the floor where the washing machine is placed, to cause pollution to user's floor, etc.. In addition, after washing of the washing machine is finished, water splashed to the outer tub opening 102 remains at the outer tub opening, causing the growth of bacteria or odors in the outer tub.
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In order to solve the above technical Problem, the present invention makes the following settings.
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As shown in Figures 1 to 5, in Embodiment of the present invention, a water retaining ring 1 protruding inward is provided at the outer tub opening 102 of the washing machine, and an inward protruding end of the water retaining ring 1 is extended at least to the vicinity of an outer wall of the inner drum 200, and is used to block water between the inner drum and the outer tub from flowing to the outer tub opening 102. By arranging water retaining ring 1 at the outer tub opening 102 of the washing machine, the water retaining ring 1 can shield the gap between the outer tub opening 102 and the inner drum opening 202, so that it is effectively avoided the occurrence of splashed water flowing out of the gap between the inner drum and the outer tub, and the phenomenon of residual water accumulated at the outer tub opening during the use of the hole-free drum washing machine. Thereby it is avoided water overflow and odor generation in the washing machine.
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In Embodiment of the present invention, the outer tub 100 includes an outer tub wall in the shape of a cylinder and extending along a horizontal axis. One end of the outer tub wall is provided with an outer tub opening flange 101, and the other end is provided with an outer tub bottom. The outer periphery of the outer tub opening flange 101 is sealed to the corresponding end of the outer tub wall, and the middle is provided with the outer tub opening 102. The outer tub bottom is sealed the end of the outer tub wall correspondingly, and a motor shaft is installed in the center of the outer tub bottom. A dynamic sealing ring is provided at a place where the motor shaft passes through the outer tub bottom. The inner drum 200 includes an inner drum wall in the shape of a cylinder and extending along a horizontal axis. One end of the inner drum wall is provided with an inner drum opening flange 201, and the other end is provided with an inner drum bottom. The outer periphery of the inner drum opening flange 201 is sealed to the corresponding end of the inner drum wall, and the middle is provided with the inner drum opening 202. The inner drum bottom is sealed the end of the inner drum wall correspondingly, and the center is coaxially connected to one end of the motor shaft passing into the outer tub. The other end of the motor shaft passing out of the outer tub is connected to a rotor of the motor for driving the inner drum to rotate. The inner drum opening flange 201 is located inside the outer tub 100 and is arranged closer to the inside of the outer tub 100 than the outer tub opening flange 101. There is a gap between an inner side of the outer tub opening flange 101 and an outer side of the inner drum opening flange 201, to ensure that the inner drum opening flange 201 does not contact the outer tub opening flange 101 when the inner drum 200 rotates.
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In Embodiment of the present invention, the water retaining ring 1 is arranged at the gap between the inner drum opening flange 201 and the outer tub opening flange 101. The water retaining ring 1 is in a shape of a ring coaxially arranged with the outer tub opening. An outer peripheral side of the water retaining ring 1 with a shape of ring is fixed and sealed to an inner side of the outer tub opening flange 101, and an inner peripheral side is arranged close to an outer side wall of the inner drum opening flange 201, so that a small gap is maintained between the water retaining ring 1 with a shape of ring and the inner drum opening flange 201 as much as possible during the rotation of the inner drum 200. Thereby water drained in the gap between the inner drum and the outer tub is effectively blocked from entering the outer tub opening 202. In the present application, in order to prevent the problem of wear of the water retaining ring 1 by the outer wall of the inner drum 200 during rotation, it is preferable to maintain a gap between the inner peripheral side of the water retaining ring 1 and the outer wall of the inner drum 200. Preferably, in order to ensure the water blocking performance, the minimum of the gap distance between the water retaining ring 1 and the outer wall of the inner drum can be less than or equal to the thickness of wall of the water retaining ring. So the gap is minimized and the water blocking effect is improved.
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However, in order to improve the water blocking effect in the present invention, the inner peripheral side of the water retaining ring 1 can also be in sealed contact with the outer wall of the inner drum 200 (not shown in the drawings) without considering the problem of wear.
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In addition, in order to improve the sealing effect, a circle of sealing ribs protruding can also be arranged on the outer wall of the inner drum 200. The sealing ribs are staggered with the water retaining ring 1, and the gap between them forms a folded flow channel, further improving the water blocking effect (not shown in the drawings).
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In Embodiment of the present invention, the water retaining ring 1 is a shape of ring surrounding the outer tub opening 102. The water retaining ring 1 with a shape of ring is coaxially arranged with the outer tub opening 101. A radial dimension of the outer peripheral side of the water retaining ring 1 is greater than a radial dimension of the outer tub opening 101. A radial dimension of the inner peripheral side of the water retaining ring 1 is less than a radial dimension of the outer tub opening 102, greater than a radial dimension of the inner drum opening 202, and less than a radial dimension of an outer peripheral of the inner drum opening flange 201, so as to ensure that the inner peripheral side of the water retaining ring 1 can be arranged close to the inner drum opening flange 201 to block water drained in space between the inner drum and the outer tub from passing through, and the outer peripheral side of the water retaining ring 1 can be fixedly assembled with the outer tub opening flange 101 in a sealing manner. Preferably, in order to avoid wear between the inner drum 200 and the water retaining ring 1 during rotation, a gap is maintained between the inner peripheral side of the water retaining ring 1 and the outer wall of the inner drum 200.
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In Embodiment of the present invention, the water retaining ring 1 is made of a material that can generate elastic deformation, such as rubber, so that the water retaining ring 1 can effectively buffer the vibration of the inner drum 200 by using its own elastic deformation and prevent the vibration of the inner drum 200 from causing damage to the water retaining ring 1 on the basis of ensuring a sealed connection with the outer wall of the inner drum 200. At the same time, since the inner peripheral side of the water retaining ring 1 is arranged close to the inner drum opening flange 201, the water retaining ring 1 can be used to support the opening end of the inner drum 200. When the inner drum 200 vibrates greatly, the water retaining ring can be used for deviation correction and support on the inner drum. Thereby it is greatly improved in the running stability of the drum washing machine and reduced in the running noise of the washing machine.
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Preferably, in order to ensure the efficiency of the water retaining ring 1 in blocking water flow and to prevent water between the inner drum and the outer tub from passing through the water retaining ring 1 to a greater extent, the following settings are made.
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The water retaining ring 1 is a ring-shaped structure arranged around the outer wall of the inner drum opening 202. The water retaining ring 1 with a shape of ring is an arc shape that gradually inclines and bends toward the outer tub bottom from the inner peripheral side to the outer peripheral side, so that water blocked by the water retaining ring 1 can be driven to move toward the outer periphery under the centrifugal force, and the blocked water flows toward the wall of the outer tub 100 and then flows out of the outer tub 100 from the drain port formed on the wall.
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In Embodiment of the present invention, a window gasket 2 is provided at the outer tub opening 102, and the window gasket 2 is installed on the outer tub opening flange 101. The outer peripheral side of the water retaining ring 1 is fixedly installed on the window gasket 2. Preferably, the water retaining ring 1 can be integrated with the window gasket 2, or the water retaining ring 1 can be fixedly installed on the window gasket 2. In the present invention, the water retaining ring 1 can also be directly and fixedly installed on the outer tub opening flange 101.
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In Embodiment of the present invention, the window gasket 2 is also made of a material that can generate elastic deformation, such as rubber. During the operation of the washing machine, when the inner drum 200 vibrates to generate displace and is in contact with the outer tub 100, the contact surface is the window gasket 2. At the same time, it is ensured that when the outer tub 100 vibrates to generate displace and is in contact with the housing of the washing machine, the contact surface is also the window gasket 2. Thereby it is greatly reduced in the contact stress of vibration collision and effectively avoided the vibration noise of the inner drum 200 and the outer tub 100.
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In Embodiment of the present invention, the window gasket 2 installed at the outer tub opening 102 is in a shape of ring, and the inner peripheral side of the window gasket 2 with a shape of ring wraps the outer tub opening 102. The outer peripheral side of the window gasket 2 with a shape of ring is extended to the outer peripheral side of the outer tub opening flange 101 and is fixed to the outer wall of the outer tub opening flange 101. The inner drum cover 300 is installed on the inner drum opening flange 201. At least the outer peripheral area of the inner drum cover 300 protrudes out from the outer tub opening flange 101 in the axial direction of the outer tub 100, and overlaps with the area of the outer tub opening flange 101 close to the outer tub opening 102 in the radial direction of the outer tub 100, so that the inner drum cover 300 after being closed can shield the annular gap between the inner drum opening and the outer tub opening. Preferably, the window gasket 2 with a shape of ring at least covers a projection range of the outer peripheral area of the inner drum cover 300 on the outer tub opening flange 101, so that after the inner drum cover 300 is closed and when the inner drum 200 rotates to generate vibration, the outer peripheral area of the inner drum cover 300 is in contact with the window gasket 2. Thereby it is reduced in the vibration collision force during the rotation and operation of the inner drum 200 and in the noise in running the washing machine.
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In Embodiment of the present invention, the middle of the outer tub opening flange 101 is provided with a ring-shaped flange 10 extending outward, and the inner peripheral side of the ring-shaped flange 10 forms the outer tub opening 102. The inner peripheral side of the window gasket 2 with a shape of ring wraps the inner peripheral side of the ring-shaped flange 10. Preferably, the middle of the ring-shaped flange 10 is provided with at least one stepped portion 11 of which radial dimension is gradually decreased outward, so that the outer tub opening 102 formed by the ring-shaped flange 10 has two sections of openings with different radial dimensions and being in communication with each other, thereby improving the structural strength of the outer tub opening 102. An annular fixing rib 12 protruding toward the inside of the outer tub 100 is provided on the side of the stepped portion 11 facing the inside of the outer tub, and the inner peripheral side of the window gasket 2 with a shape of ring wraps the inner peripheral wall of the annular fixing rib 12. The inner peripheral end of the window gasket 2 with a shape of ring is inserted into a gap between the annular fixing rib 12 and the ring-shaped flange 10, so that the inner peripheral side of the window gasket 2 with a shape of ring is fixedly assembled to the outer tub opening flange 101 in the radial direction of the outer tub. More preferably, the protruding end of the ring-shaped flange 10 is provided with a protrusion 13 protruding radially outward, and the window gasket 2 is provided with a groove 14 for the protrusion 13 to be correspondingly inserted, so as to the inner peripheral side of the annular window gasket 2 is fixedly assembled to the outer tub opening flange 101 in the axial direction of the outer tub.
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In Embodiment of the present invention, the inner peripheral end of the window gasket 2 is an inner peripheral fixed end 4. The inner peripheral fixed end 4 is extended to the inner side wall of the outer tub opening flange 101 through the outer tub opening 102, and is correspondingly inserted into the gap between the fixing rib 12 with a shape of ring and the ring-shaped flange 10. The inner peripheral fixed end 4 of the window gasket 2 at least wraps the fixing rib 12 with a shape of ring, and the inner peripheral fixed end 4 of the window gasket 2 is provided with the water retaining ring 1 with a shape of ring protruding inward in the radial direction of the outer tub opening 102. The water retaining ring 1 with a shape of ring is extended vertically, and the outer peripheral side of the water retaining ring is integrated with or fixedly connected to the window gasket 2, and at least part of the inner peripheral side facing the inside of the outer tub 100 is in contact with the outer side wall of the inner drum opening flange 201.
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In Embodiment of the present invention, the inner peripheral fixed end 4 of the window gasket 2 is provided with an installation groove 7 of which an opening faces toward the inside of the outer tub 100. The outer peripheral side of the water retaining ring 1 facing the outside of the outer tub 100 is provided with an installation protrusion 8 correspondingly inserted into the installation groove 7. Preferably, the cross-section of the installation groove 7 is in a triangular, and a notch inwardly recessed is formed on both side walls of the installation groove with the cross-section of triangular. The installation protrusion 8 is in a same triangular shape with and correspondingly inserted into the installation groove 7. Side walls of the installation protrusion with a triangular are provided with protrusion correspondingly inserted into the notch, so that the water retaining ring 1 is fixedly installed on the window gasket 2 via inserting the installation protrusion 8 into the installation groove 7.
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In Embodiment of the present invention, the middle of the inner drum opening flange 201 is provided with an inner drum opening 202 formed by the ring-shaped flange. The outer peripheral area of the inner drum opening 202 of the inner drum opening flange 201 is provided with a ring-shaped flat portion 9, and the ring-shaped flat portion 9 is flush with the inner side wall of the outer tub opening flange 101. At least part of the inner side of the water retaining ring 1 facing the inside of the outer tub 200 overlaps with the ring-shaped flat portion 9, so that the water retaining ring 1 and the inner drum opening flange 201 form a large overlapping area. Thereby it is greatly improved in the water retaining property between the water retaining ring 1 and the inner drum 200 being rotatable.
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In Embodiment of the present invention, the inner drum cover 300 that can open and close the inner drum opening 202 outward is installed on the inner drum 200, and the outer peripheral portion of the inner drum cover 300 is protruded from the inner drum opening 202. The outer peripheral end of the window gasket 2 with a shape of ring is an outer peripheral buffer end 5, and the outer peripheral buffer end 5 is free or fixed to the outer tub opening flange 101. The outer peripheral buffer end 5 IS at least protruded radially from the inner drum cover 300, so that the outer peripheral buffer end of the outer tub opening flange 101 preferably collides with the housing of the washing machine relative to other components when the outer tub vibrates during the operation of the washing machine. Thereby it is significantly reduced in the collision stress and the running noise of the washing machine. Preferably, in order to further reduce the stress of the collision contact between the outer tub opening flange and the housing of the washing machine, the outer peripheral buffer end 5 of the window gasket 2 with a shape of ring can be set as a hollow structure protruding toward the inside of the outer tub. So a buffer chamber 6 with hollow inside is formed between the outer peripheral buffer end 5 of the window gasket 2 with a shape of ring and the outer tub opening flange 101, and the buffer chamber 6 at least covers the outer peripheral area of the inner drum cover 300.
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In Embodiment of the present invention, the outer peripheral end of the window gasket 2 with a shape of ring is provided with a water receiving groove 3 protruding toward the front side of the outer tub 1 and opening radially toward the outer tub opening 102. The water receiving groove 3 at least covers a lower of the outer tub opening 102. The water receiving groove 3 is used to receive residual water overflowing from the outer tub opening 102, or flowing downward when the inner drum cover 300 is opened, or flowing down during the process of taking out and placing laundry from the inner drum opening 202, so as to avoid the occurrence of residual water flowing into the gap between the outer tub opening flange 101 and the housing of the washing machine. Preferably, the water receiving groove 3 is located in the outer peripheral area of the inner drum cover 300. More preferably, the lowest position of the water receiving groove 3 is provided with a residual water outlet 15, and the residual water outlet 15 is in communication with the bottom of the outer tub 100 of the washing machine through a pipeline to discharge the residual water out of the washing machine through the outer tub 100 and the drain pipe. So it is effectively avoided the occurrence of residual water overflowing out of the washing machine from the gap between the outer tub opening 102 and the housing of the washing machine and spreading to the ground where the washing machine is installed. More preferably, a connection between the residual water outlet 15 and the outer tub 100 is located below the water retaining ring 1.
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As shown in Figure 5, in Embodiment of the present invention, the water retaining ring 1 can also be directly arranged on the outer tub opening flange 101, and is composed of a protruding rib integrally formed on the outer tub opening flange 101. The protruding rib is radially inward protruded from the inner side wall of the outer tub opening flange 101, and the protruding end of the protruding rib is arranged close to the outer wall of the inner drum 200, which can also be used to block water between the inner drum and the outer tub from flowing towards the outer tub opening. Preferably, in order to reduce the impact force, a rubber layer can be wrapped around the periphery of the protruding rib. Similarly, in order to guide water to flow outward, the inner side wall of the protruding rib facing the inside of the outer tub 100 can also be set as an arc surface that gradually bends towards the rear of the outer tub from the inner peripheral side to the outer peripheral side.
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In addition, the water retaining ring 1 can also be set as an independent component, and the outer peripheral side of the water retaining ring 1 is fixed to the outer tub opening flange 101, which is not repeated here (not indicated in the drawings).
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The above description is only a preferred embodiment of the present application, and does not limit the present application. Although the present application has disclosed preferred embodiments, it is not intended to limit the present application. Without departing from the scope of the technical solution of the present application, anyone in the field of this patent application can be hinted to make some changes or modifications as equivalent embodiments by the above technical content. Any simple modification, equivalent change and modification made to the above embodiments according to the substantive content of the present application still belong to the scope of the solution of the present application.