A washing machine

Abstract

The present invention discloses a washing machine, which includes an inner tub and a centrifugal drainage device. A drainage port is formed in the bottom of the inner tub. The centrifugal drainage device includes: a mounting bracket, a valve plug, which is movably mounted on the mounting bracket and plugs the drainage port during the washing / rinsing process to enable the inner tub to hold water independently; a centrifugal slider, which slides relative to the bottom of the inner tub under the action of centrifugal force; a reversing transmission mechanism, which connects the valve plug and the centrifugal slider and converts the sliding of the centrifugal slider along the radial direction of the bottom of the tub into the movement of driving the valve plug along the direction parallel to the axis of the inner tub to open the drainage port; the mounting bracket includes a base, which is connected to the bottom of the inner tub; a connecting frame, which connects the base and the valve plug, and the vertical projection of the extending direction of the connecting frame on the plane where the bottom of the tub is located coincides with the vertical projection of the extending direction of the reversing transmission mechanism on the plane where the bottom of the tub is located. In the present invention, the connecting frame and the reversing transmission mechanism have overlapping projections on the bottom of the tub, which can reduce the occlusion of the drainage port and improve the drainage efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and specifically relates to a washing machine. Background Art

[0002] Most existing washing machines include an outer tub and an inner tub disposed inside the outer tub. A plurality of dewatering holes are provided on the tub wall of the inner tub to communicate the inner tub with the outer tub. When the washing machine is working, the outer tub holds washing water, and the inner tub holds laundry to be washed. The washing water can exist between the inner tub and the outer tub, but this part of the washing water is not utilized, resulting in waste of washing water. Moreover, as the working time of the washing machine increases, dirt and lint carried in the washing water will remain in the space between the inner tub and the outer tub, making it difficult to clean, leading to the generation of bacteria and odors after long-term use. To solve this problem, the prior art has proposed a washing machine without dewatering holes on the inner tub, so that the inner tub can independently hold washing water during the washing process. However, at the same time, the existing drainage method cannot achieve drainage of the inner tub without holes.

[0003] Chinese Patent No. 201610767640.4 discloses a washing machine with no water between the inner and outer tubs, including: an outer tub; an inner tub rotatably disposed inside the outer tub; during washing / rinsing, water is held in the inner tub and there is no water between the inner tub and the outer tub; a drainage hole is provided at the bottom of the inner tub, and a drainage sealing device is disposed corresponding to the drainage hole on the outer wall of the bottom of the inner tub; during washing / rinsing, the drainage sealing device keeps the drainage hole closed, and during dehydration, the drainage sealing device opens the drainage hole under the action of centrifugal force.

[0004] However, in the above solution, the valve plug slides radially along the inner tub to open / block the drainage hole. Affected by the water pressure, the sealing effect is not ideal. At the same time, limited by the rotation speed of the pulsator washing machine, the centrifugal force provided by the centrifugal block is limited, and there may be a situation where the drainage sealing device cannot open the drainage hole. On the other hand, the drainage sealing device is disposed on the lower side of the bottom of the inner tub, occupying a large space below the inner tub, which is not conducive to the expansion of the inner tub. At the same time, the valve plug itself causes a certain blockage to the drainage port. In a state where it cannot be fully opened, it will have a greater impact on the drainage efficiency, resulting in slow drainage.

[0005] In view of this, the present invention is specifically proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a washing machine. The washing machine is provided with a centrifugal drainage device capable of opening the upper drainage port of the inner barrel under the action of centrifugal force. In the centrifugal drainage device, the extension directions of the reversing transmission mechanism and the connecting frame of the mounting bracket coincide with each other in the vertical projection on the plane where the bottom of the barrel is located, reducing the occupation of the area below the drainage port, so that the blocking effect on the water flow can be reduced during the drainage process, and the situation of affecting the drainage efficiency can be avoided.

[0007] To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is:

[0008] A washing machine includes an inner barrel and a centrifugal drainage device. A drainage port is opened at the bottom of the inner barrel. It is characterized in that the centrifugal drainage device includes:

[0009] A mounting bracket,

[0010] A valve plug, which is movably mounted on the mounting bracket and blocks the drainage port during the washing / rinsing process to make the inner barrel hold water independently;

[0011] A centrifugal slider, which slides relative to the bottom of the inner barrel under the action of centrifugal force;

[0012] A reversing transmission mechanism, which connects the valve plug and the centrifugal slider and is used to convert the sliding of the centrifugal slider along the radial direction of the bottom of the barrel into the movement of driving the valve plug along the direction parallel to the axis of the inner barrel to open the drainage port;

[0013] The mounting bracket includes

[0014] A base, which is connected to the bottom of the inner barrel;

[0015] A connecting frame, which connects the base and the valve plug. The extension direction of the connecting frame coincides with the extension direction of the reversing transmission mechanism in the vertical projection on the plane where the bottom of the barrel is located.

[0016] Furthermore, the reversing transmission mechanism includes:

[0017] A connecting rod, which is arranged below the inner barrel and one end of which is connected to the centrifugal slider and moves with the centrifugal slider;

[0018] A reversing rod, one end of which is hinged to the other end of the connecting rod and moves in the same direction as the centrifugal slider under the drive of the connecting rod. The other end of the reversing rod is hinged to the valve plug and drives the valve plug to move along the direction parallel to the axis of the inner barrel;

[0019] The extension direction of the connecting rod coincides with the extension direction of the connecting frame in the vertical projection on the plane where the bottom of the barrel is located;

[0020] Preferably, the connecting rod extends along the radial direction of the bottom of the barrel.

[0021] Furthermore, the connecting frame includes:

[0022] A guiding part for mounting the valve plug;

[0023] A connecting part located below the drain outlet, connecting the base and the guiding part. The vertical projection of the extending direction of the connecting part on the plane where the bottom of the barrel is located coincides with the vertical projection of the extending direction of the connecting rod on the plane where the bottom of the barrel is located.

[0024] Furthermore, the connecting part is located between the connecting rod and the bottom of the inner barrel in the vertical direction;

[0025] Preferably, the base is connected to the part of the bottom of the barrel located on the outer periphery of the drain outlet, and the guiding part is located inside or below the drain outlet; the part of the bottom of the barrel located on the outer periphery of the drain outlet bulges downward from the bottom of the barrel, and the upper surface of the connecting part is a concave curved surface with a gradually decreasing height from both ends to the middle.

[0026] Furthermore, the base includes:

[0027] Two fixing parts are arranged at intervals on the outer periphery of the drain outlet and are connected to the bottom of the inner barrel;

[0028] A transition part for connecting the two fixing parts;

[0029] Both ends of the connecting part are respectively connected to the transition part and the guiding part;

[0030] Preferably, mounting holes are formed in the fixing parts.

[0031] Furthermore, the drain outlet is circular, and the side of the transition part facing the guiding part has an arc-shaped edge concentric with the drain outlet, and the radius corresponding to the arc-shaped edge is greater than the radius of the drain outlet.

[0032] Furthermore, the guiding part has a hollow slideway, and the valve plug includes:

[0033] A sealing cover arranged inside the inner barrel for blocking / opening the drain outlet;

[0034] A support rod, one end of which is movably arranged in the hollow slideway of the guiding part and is hinged to the reversing rod, and the other end extends out of the guiding part and is fixedly connected to the sealing cover.

[0035] Furthermore, one end of the reversing rod is located below the drain outlet and moves along the radial direction of the bottom of the barrel under the drive of the connecting rod. The other end of the reversing rod extends into the inner barrel through the drain outlet and is connected to the support rod, and drives the sealing cover to move up and down to open / block the drain outlet through the support rod.

[0036] Furthermore, the centrifugal slider is a plate-like structure perpendicular to the axis of the inner barrel, and the centrifugal slider of the plate-like structure extends circumferentially along the bottom of the barrel with a certain length.

[0037] Preferably, the centrifugal slider is arranged on the outer periphery close to the bottom of the barrel.

[0038] Furthermore, a slideway is fixedly installed on the bottom of the inner barrel, a guide groove parallel to the sliding direction of the centrifugal slider is opened on the slideway, a sliding part is arranged on the centrifugal slider, and the sliding part is slidably inserted into the guide groove.

[0039] Preferably, an elastic member is further installed between the centrifugal slider and the slideway, the elastic member applies a restoring force to the centrifugal slider, and the acting direction of the restoring force is opposite to the sliding direction of the centrifugal slider under the action of centrifugal force.

[0040] Preferably, two slideways are provided, the guide grooves on the two slideways are parallel to each other, and the centrifugal slider is installed between the two slideways.

[0041] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0042] In the washing machine of the present invention, the extending directions of the commutation transmission mechanism and the connecting frame of the mounting bracket respectively have overlapping perpendicular projections on the plane where the bottom of the barrel is located, which can reduce the occupation of the area below the drain port, thus avoiding the situation that the drain port is blocked in a large area and affecting the drainage efficiency. At the same time, it can also reduce the possibility that the lint carried in the drainage hangs on the centrifugal drainage device, avoiding the reduction of drainage efficiency caused by hooked lint, or hindering the centrifugal drainage device from closing the inner barrel and causing water leakage.

[0043] In the washing machine of the present invention, the commutation transmission mechanism includes a connecting rod extending radially along the bottom of the barrel and a commutation rod for commutation. The centrifugal slider is arranged on the outer periphery close to the bottom of the inner barrel and is connected to the commutation rod through the connecting rod, so that the centrifugal slider has a larger rotation radius, thereby providing a greater centrifugal force to prevent the situation that the drain port cannot be opened due to insufficient centrifugal force. The centrifugal slider of the plate-like structure is more conducive to being installed close to the bottom of the inner barrel, so that the structure below the inner barrel can be more compact and space can be saved.

[0044] In the washing machine of the present invention, the transition part connecting the two fixing parts is provided with an arc-shaped edge, so as to avoid the drain port on the bottom of the inner barrel, further reduce the blockage of the drainage water flow, and improve the drainage efficiency of the washing machine.

[0045] The following further describes the specific implementation manners of the present invention in detail with reference to the accompanying drawings. Description of the Drawings

[0046] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not unduly limit the present invention. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the accompanying drawings:

[0047] Figure 1 is a schematic diagram of the bottom of the inner tub of the washing machine in the closed state of the drain opening in the embodiment of the present invention;

[0048] Figure 2 is the present invention Figure 1 an enlarged schematic diagram of part A therein;

[0049] Figure 3 is an exploded view of the bottom of the inner tub of the washing machine in the embodiment of the present invention;

[0050] Figure 4 is a cross-sectional view of the drain opening of the washing machine in the plugged state of the drain opening in the embodiment of the present invention;

[0051] Figure 5 is a cross-sectional view of the drain opening of the washing machine in the open state of the drain opening in the embodiment of the present invention;

[0052] Figure 6 is a schematic structural diagram of the mounting bracket in the embodiment of the present invention;

[0053] Figure 7 is a schematic diagram of another perspective of the mounting bracket in the embodiment of the present invention;

[0054] Figure 8 is a schematic structural diagram of the centrifugal slider in the embodiment of the present invention;

[0055] Figure 9 is a schematic structural diagram of two slideways in the embodiment of the present invention.

[0056] In the figure: 100, bottom of the barrel; 101, drain port; 200, valve plug; 201, sealing cover; 202, support rod; 203, gasket; 300, centrifugal slider; 310, centrifugal block body; 311, notch; 320, sliding member; 321, sliding portion; 322, first abutting portion; 323, limiting boss; 324, first covering portion; 325, second covering portion; 326, clamping groove; 410, reversing rod; 420, connecting rod; 500, mounting bracket; 510, base; 511, fixing portion; 5111, mounting hole; 512, transition portion; 520, connecting frame; 521, guiding portion; 5211, avoiding groove; 522, connecting portion; 5221, groove; 600, slideway; 601, guiding groove; 602, second abutting portion; 603, slideway fixing portion; 604, supporting portion; 610, elastic member.

[0057] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0059] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0060] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" 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 direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] Embodiment 1

[0062] As Figures 1 to 9 shown, the washing machine described in this embodiment includes an inner barrel and a centrifugal drainage device. A drain port 101 is opened at the bottom 100 of the inner barrel. The centrifugal drainage device includes:

[0063] A mounting bracket 500,

[0064] The valve plug 200 is movably installed on the mounting bracket 500 and blocks the drain port 101 during the washing / rinsing process to make the inner tub hold water independently.

[0065] The centrifugal slider 300 slides relative to the bottom 100 of the inner tub under the action of centrifugal force.

[0066] The commutation transmission mechanism connects the valve plug 200 and the centrifugal slider 300 and is used to convert the sliding of the centrifugal slider 300 along the radial direction of the bottom 100 of the tub into the movement of driving the valve plug 200 along the direction parallel to the axis of the inner tub, thereby opening the drain port 101 for drainage.

[0067] In this embodiment, the inner wall of the inner tub is not provided with dewatering holes at least in the area below the highest water level of the washing machine. During the washing / rinsing process, the drain port 101 is blocked by the valve plug 200 to form a closed inner tub, so as to realize that the inner tub holds water independently during the washing / rinsing process. The outer tub can be not provided in the washing machine, and only a water collecting device is provided below the inner tub. The upper edge height of the water collecting device is lower than the height of the mouth of the inner tub, so as to realize the expansion of the inner tub. At the same time, it also avoids the problem that dirt is easily accumulated between the inner tub and the outer tub and is difficult to clean, and can also achieve the purpose of saving washing water consumption.

[0068] In this embodiment, the mounting bracket 500 includes:

[0069] The base 510 is connected to the bottom 100 of the inner tub.

[0070] The connecting frame 520 connects the base 510 and the valve plug 200. The vertical projection of the extending direction of the connecting frame 520 on the plane where the bottom 100 of the tub is located coincides with the vertical projection of the extending direction of the commutation transmission mechanism on the plane where the bottom 100 of the tub is located.

[0071] In the above solution, the centrifugal drainage device is installed on the bottom 100 of the inner tub, and the cooperation between the valve plug 200 and the drain port 101 realizes the blocking and opening of the drain port 101. The connecting frame 520 for connecting the valve plug 200 in the mounting bracket 500 and the commutation transmission mechanism for connecting the valve plug 200 and the centrifugal slider 300 both have parts located below the drain port 101. Through the structural design of the centrifugal drainage device, the vertical projections of the extending directions of the connecting frame 520 of the mounting bracket 500 and the commutation transmission mechanism on the plane where the bottom 100 of the tub is located coincide with each other, specifically coincide within the range of the drain port 101, which can reduce the occupation of the area below the drain port 101, thereby avoiding the situation that the drain port 101 is blocked in a large area and affects the drainage efficiency.

[0072] On the other hand, a large amount of lint may be carried in the drainage of the washing machine, and these lint may be hooked and remain at any position where the drainage water flow passes through. The vertical projections of the extending directions of the connecting frame 520 and the commutation transmission mechanism on the plane where the bottom of the barrel 100 is located coincide, which can also reduce the area of the centrifugal drainage device exposed to the drainage water flow, thereby reducing the possibility that the lint carried in the drainage is hooked on the centrifugal drainage device, reducing the hooking and residue of the lint, avoiding the reduction of the drainage efficiency caused by the hooked lint, or preventing the centrifugal drainage device from closing the inner barrel and causing water leakage.

[0073] In this embodiment, the commutation transmission mechanism specifically includes:

[0074] The connecting rod 420 is arranged below the inner barrel, and the left end is connected to the centrifugal slider 300 and moves with the centrifugal slider 300.

[0075] The commutation rod 410 has one end hinged to the right end of the connecting rod 420, moves in the same direction as the centrifugal slider 300 under the drive of the connecting rod 420, and the other end of the commutation rod 410 is hinged to the valve plug 200 to drive the valve plug 200 to move along a direction parallel to the axis of the inner barrel.

[0076] The vertical projection of the extending direction of the connecting rod 420 on the plane where the bottom of the barrel 100 is located coincides with the vertical projection of the extending direction of the connecting frame 520 on the plane where the bottom of the barrel 100 is located.

[0077] In a preferred solution of this embodiment, the connecting rod 420 is arranged to extend radially along the bottom of the barrel 100. Since the centrifugal slider 300 slides radially along the bottom of the barrel 100, that is, the extending direction of the connecting rod 420 is parallel to the sliding direction of the centrifugal slider 300. The above method can ensure that the acting force applied by the connecting rod 420 to the commutation rod 410 does not have a circumferential component along the bottom of the barrel 100, thereby reducing the horizontal component of the acting force on the valve plug 200 and reducing the frictional resistance suffered by the valve plug 200 when moving relative to the mounting bracket 500.

[0078] Under the action of centrifugal force, the centrifugal slider 300 slides radially from the inside to the outside along the bottom of the barrel 100, driving one end of the commutation rod 410 to move outward synchronously with the centrifugal slider 300 through the connecting rod 420. The other end of the commutation rod 410 swings around the end hinged to the connecting rod 420, thereby driving the valve plug 200 to move in the mounting bracket 500 along a direction parallel to the axis of the inner barrel.

[0079] Specifically, the right end of the connecting rod 420 has a connecting groove, and the lower end of the commutation rod 410 is arranged in the connecting groove and hinged to the connecting rod 420.

[0080] In a further solution of this embodiment, the connecting frame 520 includes:

[0081] The guiding part 521 is used to install the valve plug 200;

[0082] The connecting part 522 is located below the drain opening 101 and connects the base 510 and the guiding part 521. The vertical projection of the extending direction of the connecting part 522 on the plane where the bottom of the barrel 100 is located coincides with the vertical projection of the extending direction of the connecting rod 420 on the plane where the bottom of the barrel 100 is located.

[0083] Further, one end of the connecting rod 420 is connected to the centrifugal slider 300 and extends from the outside to the inside along the radial direction of the bottom of the barrel 100 to be hinged to the reversing rod 410, so that the distance between the centrifugal slider 300 and the axis of the inner barrel is greater than the distance between the valve plug 200 and the axis of the inner barrel, that is, the centrifugal slider 300 has a larger rotation radius, thereby providing a greater centrifugal force. By connecting the centrifugal slider 300 and the reversing rod 410 through the connecting rod 420 extending along the radial direction of the bottom of the barrel 100, the transmission between the centrifugal slider 300 and the valve plug 200 can be realized.

[0084] In this embodiment, the connecting part 522 is located between the connecting rod 420 and the bottom of the inner barrel 100 in the vertical direction, and the connecting rod 420 and the connecting part 522 extend in the same direction, thereby forming an overlapping structure up and down to reduce the blockage of the drainage water flow below the drain opening 101, and the structure is simple.

[0085] In the preferred solution of this embodiment, the base 510 is connected to the part of the bottom of the barrel 100 located outside the drain opening 101, and the guiding part 521 is located inside the drain opening 101 or below the drain opening 101. The part of the bottom of the barrel 100 located outside the drain opening 101 bulges downward, and the upper surface of the connecting part 522 is a concave curved surface with the height gradually decreasing from both ends to the middle.

[0086] In this embodiment, the valve plug 200 is arranged inside the inner barrel and plugs the drain opening 101 on the bottom of the barrel 100 from top to bottom. The local part of the bottom of the barrel 100 outside the drain opening 101 forms a conical surface with the diameter gradually decreasing from top to bottom. When the valve plug 200 plugs the drain opening 101, the conical surface structure can better cooperate with the valve plug 200 to provide a more reliable sealing effect.

[0087] Due to the installation positions of the base 510 and the guiding part 521, the connecting part 522 extends from the outside of the drain opening 101 to near the center of the drain opening 101, and the middle part of the connecting part 522 passes through the area where the conical surface structure bulges downward on the bottom of the barrel 100. By setting the upper surface of the connecting part 522 as a concave curved surface with the height gradually decreasing from both ends to the middle, the above-mentioned protruding conical surface structure can be effectively avoided, so that the mounting bracket 500 can be installed closer to the bottom of the barrel 100, making the installation structure of the bottom of the barrel 100 and the centrifugal drainage device more compact and reducing the occupation of the space below the inner barrel.

[0088] Further preferably, a groove 5221 extending in the same direction as the connecting rod 420 is provided on the lower surface of the connecting portion 522, and a part of the connecting rod 420 is disposed in the groove 5221. The above arrangement can make the connecting portion 522 and the connecting rod 420 closer in the vertical direction, design the overall structure of the centrifugal drainage device more compactly, reduce its overall volume, and thus further reduce the occupation of the space below the inner barrel.

[0089] In a further aspect of this embodiment, the base 510 includes:

[0090] Two fixing portions 511 are provided at intervals on the outer periphery of the drain opening 101 and are connected to the bottom 100 of the inner barrel;

[0091] A transition portion 512 for connecting the two fixing portions 511.

[0092] Both ends of the connecting portion 522 are respectively connected to the transition portion 512 and the guiding portion 521.

[0093] Preferably, mounting holes 5111 are formed in the fixing portion 511.

[0094] In this embodiment, the mounting bracket 500 is connected to the bottom 100 of the inner barrel through the fixing portion 511. During assembly, screws can pass through the mounting holes 5111 in the fixing portion 511 to fix the mounting bracket 500 to the bottom 100 of the inner barrel. The guiding portion 521 is disposed suspended relative to the fixing portion 511. The fixing portion 511 is provided in two, preferably symmetric with respect to the guiding portion 521, which has a better fixing effect on the mounting bracket 500 and a more firm structure.

[0095] In a further aspect of this embodiment, the drain opening 101 is circular, and the side of the transition portion 512 facing the guiding portion 521 has an arc-shaped edge concentric with the drain opening 101, and the radius corresponding to the arc-shaped edge is greater than the radius of the drain opening 101. The setting of the above arc-shaped edge can achieve the avoidance of the area below the drain opening 101 by the transition portion 512, prevent the transition portion 512 from blocking the drainage flow, and avoid affecting the drainage efficiency.

[0096] In a specific aspect of this embodiment, the guiding portion 521 has a hollow slideway, and the valve plug 200 includes:

[0097] A sealing cover 201, disposed inside the inner barrel, for blocking / opening the drain opening 101;

[0098] A support rod 202, the lower end of which is slidably disposed in the hollow slideway of the guiding portion 521 and is hinged to the reversing rod 410, and the upper end extends out of the guiding portion 521 and is fixedly connected to the sealing cover 201.

[0099] Preferably, a sealing gasket 203 is fixedly arranged on the lower side of the outer periphery of the sealing cover 201. When the valve plug 200 blocks the drain port 101, the sealing gasket 203 is in sealing fit with the outer periphery of the drain port 101 on the inner side of the barrel bottom 100, so as to achieve a better sealing effect.

[0100] Since the sealing cover 201 is located inside the inner barrel and blocks the drain port 101 from top to bottom, when the inner barrel is filled with water, the water pressure acting on the upper surface of the sealing cover 201 can also provide an auxiliary sealing force, and the sealing effect is better. The guiding part 521 can limit the movement of the support rod 202 in the horizontal direction, so as to effectively convert the horizontal movement of the centrifugal slider 300 into the vertical movement of driving the valve plug 200 through the reversing rod 410.

[0101] In this embodiment, the lower end of the reversing rod 410 is located below the drain port 101 and moves along the radial direction of the barrel bottom 100 under the drive of the connecting rod 420. The upper end of the reversing rod 410 extends into the inner barrel through the drain port 101 and is connected to the support rod 202, and drives the sealing cover 201 to move up and down to open / block the drain port 101 through the support rod 202.

[0102] Furthermore, a relief groove 5211 with a vertical extension and an open lower end is provided on the right side of the guiding part 521. When the reversing rod 410 swings to drive the support rod 202 to move, the lower half of the reversing rod 410 extends out of the guiding part 521 through the relief groove 5211 when the sealing cover 201 blocks the drain port 101. The lower end of the support rod 202 has an open mounting groove, and the upper end of the reversing rod 410 is inserted into the mounting groove to be hinged to the support rod 202.

[0103] In a further solution of this embodiment, the centrifugal slider 300 is a plate-like structure perpendicular to the axis of the inner barrel, and the centrifugal slider 300 of the plate-like structure extends along the circumferential direction of the barrel bottom 100 with a certain length.

[0104] Preferably, the centrifugal slider 300 is arranged near the outer periphery of the barrel bottom 100.

[0105] For a pulsator washing machine, due to the limitation of the maximum rotation speed it can reach, in order to provide enough centrifugal force to open the drain port 101 through the centrifugal slider 300, it is necessary to increase the mass of the centrifugal slider 300, that is, it is necessary to adopt a centrifugal slider 300 with a larger volume in the centrifugal drainage device.

[0106] In the solution of this embodiment, the centrifugal slider 300 is arranged in a plate-like structure, which can be installed as close as possible to the bottom 100 of the inner barrel, reducing the occupation of the space below the inner barrel. At the same time, by increasing the area of the flat laying of the centrifugal slider 300, that is, increasing its circumferential extension length along the bottom 100 of the barrel to increase the volume, and then making it have a greater mass to improve the centrifugal force that can be provided, without the need to additionally occupy the space below the inner barrel to increase the mass of the centrifugal slider 300. The centrifugal slider 300 is arranged close to the outer circumference of the bottom 100. On the one hand, it can increase its rotation radius, and on the other hand, it can also provide a larger installation space, facilitating the increase of the flat laying area of the centrifugal slider 300.

[0107] Further, an inward concave notch 311 is provided on the edge of the plate-like centrifugal slider 300 facing the axis of the inner barrel. When the centrifugal slider 300 is located at a position close to the axis of the inner barrel, that is, when the centrifugal slider 300 is not affected by the centrifugal force and the valve plug 200 is located at the position blocking the drain port 101, the mounting bracket 500 is correspondingly arranged in the notch 311.

[0108] In the above solution, the area occupied by the mounting bracket 500 below the bottom 100 of the barrel coincides with the area occupied by the centrifugal slider 300 below the bottom 100 when it is located at a position close to the axis of the inner barrel. The setting of the notch 311 can avoid the mounting bracket 500 fixed to the lower surface of the bottom 100 of the barrel, so that the centrifugal slider 300 can be installed as close as possible to the lower surface of the bottom 100 of the barrel without being lower than the mounting bracket 500, thereby reducing the height of the space occupied by the centrifugal drainage device below the inner barrel in the vertical direction and making the structure more compact.

[0109] In this embodiment, the inner barrel of the washing machine can independently hold water during the washing / rinsing process, and the drainage function of the inner barrel is realized through the centrifugal drainage device installed at the bottom 100 of the inner barrel. Through the structural design of the centrifugal drainage device, the parts located below the drain port 101, that is, the connecting part 522 of the mounting bracket 500 and the connecting rod 420 in the reversing transmission mechanism, have overlapping vertical projections on the plane where the bottom 100 of the barrel is located, which can reduce the occupation of the area below the drain port 101, avoid blocking the drainage water flow, and improve the drainage efficiency. At the same time, the connecting part 522 and the connecting rod 420 form an overlapping structure up and down, which also reduces the area exposed to the drainage water flow, thereby reducing the hooking of lint. On the other hand, the structures of the centrifugal slider 300, the reversing transmission mechanism, and the mounting bracket 500 cooperate with each other, so that they can be installed more compactly on the bottom 100 of the inner barrel, reducing the occupation of the space below the inner barrel and being beneficial to the expansion design of the inner barrel.

[0110] Embodiment Two

[0111] As Figures 1 to 9As shown in the figure, this embodiment is a further limitation of the above-mentioned Embodiment 1. A slideway 600 is fixedly installed on the bottom 100 of the inner barrel. A guiding groove 601 parallel to the sliding direction of the centrifugal slider 300 is provided on the slideway 600. A sliding part 321 is provided on the centrifugal slider 300, and the sliding part 321 is slidably inserted into the guiding groove 601.

[0112] In the above solution, the guiding groove 601 on the slideway 600 cooperates with the sliding part 321 on the centrifugal slider 300 to guide the sliding direction of the centrifugal slider 300, ensuring that when the centrifugal drainage device rotates with the inner barrel, the centrifugal slider 300 can stably slide radially outward along the bottom 100 of the barrel, so as to better drive the reversing rod 410 to push up the valve plug 200 to drain water.

[0113] Specifically, two slideways 600 are provided, and the guiding grooves 601 on the two slideways 600 are parallel to each other. The centrifugal slider 300 is installed between the two slideways 600. By providing two slideways 600, it cooperates with the two ends of the centrifugal slider 300 extending along the circumferential direction of the bottom 100 of the barrel respectively for guiding, and the guiding effect on the centrifugal slider 300 is better.

[0114] In the preferred solution of this embodiment, the centrifugal slider 300 includes a centrifugal block body 310 and a sliding member 320 fixedly connected to the centrifugal block body 310. The sliding part 321 is formed on the sliding member 320, and the sliding member 320 is slidably installed on the slideway 600.

[0115] Specifically, in order to provide a greater mass to generate a greater centrifugal force, the centrifugal block body 310 is made of a metal material. If it is directly installed on the slideway 600, the friction coefficient between the two is relatively large, and a large frictional resistance will be generated when the centrifugal slider 300 slides, which will hinder the sliding of the centrifugal slider 300 and may cause the drainage port 101 to not open.

[0116] In this embodiment, sliding members 320 are respectively arranged at both ends of the centrifugal block body 310 for sliding cooperation with the slideway 600. The sliding member 320 is made of a material that can reduce the friction coefficient. For example, a sliding member 320 made of plastic can be selected and fixed at both ends of the centrifugal block body 310. The friction coefficient between the sliding member 320 and the slideway 600 is relatively small, which can reduce the sliding friction force received by the centrifugal slider 300. Furthermore, the centrifugal slider 300 can slide under a smaller centrifugal force, and the drainage port 101 can be controlled to open.

[0117] In a further solution of this embodiment, between the centrifugal slider 300 and the slideway 600, specifically between the sliding member 320 and the slideway 600, an elastic member 610 is also installed. The elastic member 610 applies a restoring force to the centrifugal slider 300, and the acting direction of the restoring force is opposite to the direction in which the centrifugal slider 300 slides under the action of the centrifugal force.

[0118] In the above solution, when the inner barrel rotates to a certain speed, the centrifugal slider 300 slides leftward under the action of centrifugal force, and then pushes the valve plug 200 upward through the connecting rod 420 and the reversing rod 410 to open the drain port 101 for drainage. During the process of the rotational speed of the inner barrel gradually decreasing until it stops, the centrifugal force gradually decreases. When the centrifugal force is less than the force exerted by the elastic member 610 on the centrifugal slider 300, the elastic member 610 pushes the centrifugal slider 300 to move rightward to reset, thereby pulling down the valve plug 200 to re-seal the drain port 101.

[0119] In this embodiment, a first abutting portion 322 is provided on the centrifugal slider 300, and a second abutting portion 602 spaced relatively from the first abutting portion 322 is provided on the slideway 600. Two ends of the elastic member 610 respectively abut against opposite surfaces of the first abutting portion 322 and the second abutting portion 602. During the process of the centrifugal slider 300 sliding radially outward along the bottom of the barrel 100, the first abutting portion 322 and the second abutting portion 602 approach each other, thereby compressing the elastic member 610 to generate a force opposite to the centrifugal force.

[0120] The elastic member 610 in this embodiment is a spring, and the elastic member 610 can also be any elastic device that can provide elastic force when compressed.

[0121] In the above solution, through the design of the distance between the first abutting portion 322 and the second abutting portion 602, and the initial length of the elastic member 610, when the valve plug 200 is located at the position of sealing the drain port 101, that is, when the centrifugal slider 300 is located at a position close to the center of the bottom of the barrel 100, the elastic member 610 is in a compressed state and has a certain pre-compression force. The elastic member 610 pushes the first abutting portion 322 rightward through the pre-compression force, and then enables the centrifugal slider 300 to apply a downward pulling force to the valve plug 200 through the connecting rod 420 and the reversing rod 410, assisting the valve plug 200 to seal the drain port 101 and further enhancing the sealing effect.

[0122] In a further solution of this embodiment, upper and lower edges of the surface of the centrifugal slider 300 facing the slideway 600 bulge toward the slideway 600 to respectively form a first covering portion 324 and a second covering portion 325. A clamping groove 326 is formed between the first covering portion 324 and the second covering portion 325, and the elastic member 610 is placed inside the clamping groove 326.

[0123] The settings of the first covering portion 324 and the second covering portion 325 shield the elastic member 610 from the upper and lower sides of the elastic member 610. When the washing machine drains water, it can, to a certain extent, avoid the contact between the drainage water flow and the elastic member 610.

[0124] Particularly for the elastic member 610 made of metal material, it can prevent the elastic member 610 from rusting when it is in a humid environment for a long time, resulting in the loss of its elasticity and being unable to be used for the reset of the centrifugal slider 300. On the other hand, it can also prevent lint from getting hooked on the elastic member 610, resulting in the elastic failure caused by the inability of the elastic member 610 to produce effective deformation. Since the above structure protects the elastic member 610 inside the centrifugal drainage device from easily losing its elasticity, ensures the long-term effectiveness of the centrifugal drainage device, and thus extends the service life of the washing machine.

[0125] Preferably, the depth of the clamping groove 326 gradually deepens from both sides close to the first covering portion 324 and the second covering portion 325 towards the middle, forming a concave curved surface connecting the first covering portion 324 and the second covering portion 325. In this embodiment, a cylindrical spring is used as the elastic member 610. The formation of the concave curved surface in the clamping groove 326 can better fit the outer peripheral surface of the elastic member 610, so that the elastic member 610 is stably held in the clamping groove 326 and is not prone to displacement.

[0126] Furthermore, the open end of the clamping groove 326 can be blocked by the slideway 600 or by providing a raised structure at the corresponding position on the bottom of the barrel 100, so that the outer peripheral side of the elastic member 610 is completely covered, further reducing the possibility of the drainage water flow contacting the elastic member 610, and at the same time ensuring that the elastic member 610 will not come out of the clamping groove 326.

[0127] In this embodiment, the two ends of the elastic member 610 respectively abut against the first abutting portion 322 on the centrifugal slider 300 and the second abutting portion 602 on the slideway 600. Specifically, one end of the clamping groove 326 is closed to form the first abutting portion 322, and the other end of the clamping groove 326 is open. The second abutting portion 602 on the slideway 600 blocks the open end of the clamping groove 326, so that the elastic member 610 is located inside the clamping groove 326, and the two ends respectively abut against the first abutting portion 322 and the second abutting portion 602.

[0128] Furthermore, the slideway 600 has a slideway fixing portion 603 connected to the bottom of the barrel 100. There are holes in the slideway fixing portion 603. By passing screws through the slideway fixing portion 603, the fixing of the slideway fixing portion 603 to the bottom of the inner barrel 100 is realized. By adjusting the thickness of the slideway fixing portion 603, it can block the open end of the clamping groove 326, so as to completely cover the outer peripheral side of the elastic member 610.

[0129] The lower edge of the surface of the slideway fixing part 603 facing the centrifugal slider 300 protrudes towards the centrifugal slider 300 to form a supporting part 604. The second abutting part 602 protrudes from the surface of the slideway fixing part 603 facing the centrifugal slider 300. The lower surface of the second abutting part 602 is spaced from the upper surface of the supporting part 604, and a guiding groove 601 is formed therebetween, which cooperates with the sliding part 321 on the centrifugal slider 300 to realize the guiding effect on the sliding of the centrifugal slider 300.

[0130] In the centrifugal slider 300 of this embodiment, the sliding part 321 and the second covering part 325 are the same structure provided on the centrifugal slider 300. On the one hand, it cooperates with the guiding groove 601 on the slideway 600 to realize the guiding of the centrifugal slider 300. On the other hand, it can be used to block the lower side surface of the elastic member 610 and cooperate with the first covering part 324 to reduce the contact between the elastic member 610 and the drainage water flow. Two effect functions are realized through the same structure, which can simplify the structure of the centrifugal slider 300 and at the same time make the overall structure of the centrifugal drainage device more compact.

[0131] Specifically, the centrifugal block body 310 in the centrifugal slider 300 is only used to provide the mass that can generate sufficient centrifugal force, and the fitting and installation structures of the centrifugal slider 300 and the slideway 600 are all formed on the sliding member 320. In detail, the centrifugal block body 310 extends a certain length along the circumference of the bottom of the barrel 100, and the sliding members 320 are arranged at both ends in the length direction of the centrifugal block body 310. The first covering part 324, the second covering part 325 (i.e., the sliding part 321) and the first abutting part 322 are all formed by the sliding member 320.

[0132] In a further solution of this embodiment, a limiting boss 323 is locally protruded on the lower surface of one end of the sliding part 321 close to the axis of the inner barrel, and the limiting boss 323 is arranged opposite to one end of the supporting part 604 close to the axis of the inner barrel.

[0133] In the above solution, the cooperation between the limiting boss 323 and the supporting part 604 limits the slidable range of the centrifugal slider 300. When the centrifugal slider 300 slides to the point where the limiting boss 323 abuts against the right end of the supporting part 604, it cannot slide further, so that the farthest distance that the centrifugal slider 300 can slide can be accurately controlled. Furthermore, when designing the internal structure of the washing machine, sufficient space can be accurately reserved for the sliding of the centrifugal slider 300 to avoid rubbing or even collision between the centrifugal slider 300 and the internal structure of the washing machine when the centrifugal slider 300 slides to open the drain port 101.

[0134] In this embodiment, a slideway 600 for guiding the centrifugal slider 300 is provided on the bottom 100 of the inner barrel. Through the cooperation between the sliding part 321 on the centrifugal slider 300 and the guiding groove 601 on the slideway 600, it can be ensured that the centrifugal slider 300 slides stably along the radial direction of the bottom 100 of the barrel without deviating from the sliding path. An elastic member 610 is arranged between the centrifugal slider 300 and the slideway 600, which can make the centrifugal slider 300 automatically reset when not under centrifugal force, so as to restore the state where the drain port 101 of the inner barrel is blocked by the valve plug 200. By arranging a first covering part 324 and a second covering part 325 on the centrifugal slider 300 to cover the upper and lower sides of the elastic member 610, the elastic member 610 can be protected from easily contacting with the drain water flow, avoiding the elastic failure of the elastic member 610 caused by rust or hooked lint, so as to ensure the long-term effectiveness of the centrifugal drainage device and extend the service life of the washing machine.

[0135] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed as above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A washing machine, comprising an inner tub and a centrifugal drainage device, wherein a drainage opening is formed in the bottom of the inner tub, and it is characterized in that The centrifugal drainage device includes: a mounting bracket, a valve plug, which is movably mounted on the mounting bracket and blocks the drain opening during the washing or rinsing process to make the inner tub hold water independently; a centrifugal slider, which slides relative to the bottom of the inner tub under the action of centrifugal force; a commutation transmission mechanism, which connects the valve plug and the centrifugal slider and includes a connecting rod, which is arranged under the inner tub, with one end connected to the centrifugal slider and moving along with the centrifugal slider; and a commutation rod, with one end hinged to the other end of the connecting rod, moving in the same direction as the centrifugal slider under the drive of the connecting rod, and the other end of the commutation rod is hinged to the valve plug, converting the radial sliding of the centrifugal slider along the bottom of the tub into the movement of driving the valve plug along the direction parallel to the axis of the inner tub to open the drain opening; The mounting bracket includes a base, which is connected to the bottom of the inner tub; a connecting frame, which connects the base and the valve plug, and the vertical projection of the extending direction of the connecting frame on the plane where the bottom of the tub is located coincides with the vertical projection of the extending direction of the connecting rod of the commutation transmission mechanism on the plane where the bottom of the tub is located.

2. The washing machine according to claim 1, characterized in that, The connecting rod is arranged along the radial direction of the bottom of the tub.

3. The washing machine according to claim 1, characterized in that, The connecting frame includes: a guiding part, which is used for mounting the valve plug; a connecting part, which is located below the drain opening, connects the base and the guiding part, and the vertical projection of the extending direction of the connecting part on the plane where the bottom of the tub is located coincides with the vertical projection of the extending direction of the connecting rod on the plane where the bottom of the tub is located.

4. The washing machine according to claim 3, characterized in that, The connecting part is located between the connecting rod and the bottom of the inner tub in the vertical direction.

5. The washing machine according to claim 4, wherein, The base is connected to the part of the bottom of the tub located outside the drain opening, and the guiding part is located inside or below the drain opening; the part of the bottom of the tub located outside the drain opening bulges downward, and the upper surface of the connecting part is a concave curved surface with the height gradually decreasing from both ends to the middle.

6. The washing machine according to claim 4, wherein The base includes: two fixing parts, which are arranged at intervals on the outer periphery of the drain opening and are connected to the bottom of the inner tub; a transition part, which is used for connecting the two fixing parts; Both ends of the connecting part are respectively connected to the transition part and the guiding part.

7. The washing machine according to claim 6, characterized in that Mounting holes are formed on the fixing part.

8. The washing machine according to claim 6, characterized in that, The drain opening is circular, and the side of the transition part facing the guiding part has an arc-shaped edge concentric with the drain opening, and the radius corresponding to the arc-shaped edge is greater than the radius of the drain opening.

9. The washing machine according to any one of claims 3-8, characterized in that, The guiding part has a hollow slideway, and the valve plug includes: a sealing cover, which is arranged inside the inner tub and is used for blocking or opening the drain opening; a support rod, with one end movably arranged in the hollow slideway of the guiding part and hinged to the commutation rod, and the other end extending out of the guiding part and fixedly connected to the sealing cover.

10. The washing machine according to claim 9, characterized in that, One end of the commutation rod is located below the drain opening, moves along the radial direction of the bottom of the tub under the drive of the connecting rod, and the other end of the commutation rod extends into the inner tub through the drain opening and is connected to the support rod, driving the sealing cover to move up and down through the support rod to open or block the drain opening.

11. The washing machine according to any one of claims 1-8, characterized in that, The centrifugal slider is a plate-like structure perpendicular to the axis of the inner tub, and the plate-like centrifugal slider extends along the circumference of the bottom of the tub with a certain length.

12. The washing machine according to claim 11, characterized in that, The centrifugal slider is arranged near the outer periphery of the bottom of the tub.

13. The washing machine according to any one of claims 1-8, characterized in that, A slideway is fixedly installed on the bottom of the inner tub, a guiding groove parallel to the sliding direction of the centrifugal slider is formed on the slideway, a sliding part is arranged on the centrifugal slider, and the sliding part is slidably inserted into the guiding groove.

14. The washing machine according to claim 13, characterized in that, An elastic member is further installed between the centrifugal slider and the slideway, and the elastic member applies a restoring force to the centrifugal slider, and the acting direction of the restoring force is opposite to the direction in which the centrifugal slider slides under the action of the centrifugal force.

15. The washing machine according to claim 13, characterized in that, Two slideways are provided, and the guide grooves on the two slideways are parallel to each other, and the centrifugal slider is installed between the two slideways.

Images