Liquid detergent dispenser and washing machine

Abstract

The present invention discloses a liquid detergent dispenser and washing machine, comprising a housing having an expandable check valve installed therein, a pushing part whose head abuts against the check valve, a sleeve fitted along the length of the pushing part so as to be relatively movable relative to the pushing part, and the pushing part always abuts against the end of the check valve when the housing is connected or disconnected. By installing the sleeve outside the pushing part, the sleeve always abuts against the end of the check valve and seals it when the pushing part is connected or disconnected from the housing, so that liquid detergent does not remain inside the housing and dripping does not occur when the housing and the pushing part are disconnected.

Description

[Technical Field]

[0001] The present invention is in the field of laundry treatment, and more particularly, to liquid detergent dispensers and washing machines. [Background technology]

[0002] As people's living standards improve, washing machines are becoming more common. By simply placing clothes and liquid detergent in a special container, the washing machine can automatically complete the washing process, freeing people from the tedious daily chores. The liquid detergent is automatically dispensed into the washing tub and washed with the clothes.

[0003] In conventional washing machine liquid dispensers, the connection between the liquid storage case and dispenser is made by a push pin on the dispenser. When connected, the push pin pushes open the check valve in the liquid storage case, allowing for flow. However, when the push pin on the dispenser and the check valve in the liquid storage case are inserted, liquid detergent accumulates at the connection. As the push pin on the dispenser gradually separates from the liquid storage case, the valve body in the liquid storage case seals the liquid detergent through the seal ring into the sleeve end of the liquid storage case. After the push pin on the dispenser and the liquid storage case are pushed out and separated, the liquid in that area is pushed out, causing dripping. This not only creates unnecessary waste, but also soils the washing machine or floor, reducing the user's comfort during use.

[0004] It is with this in mind that the present invention is particularly presented. Summary of the Invention [Problem to be solved by the invention]

[0005] The technical problem that the present invention aims to solve is to overcome the shortcomings of the prior art, and provides a liquid detergent dispenser that has a sleeve installed on the outside of the pushing part. When the pushing part is connected to or disconnected from the housing, the sleeve is always abutted against the end of the check valve and sealed, so that no liquid detergent remains in the housing, and no dripping occurs when the housing and the pushing part are disconnected.

[0006] Another object of the present invention is to provide a washing machine. [Means for solving the problem]

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is as follows.

[0008] A liquid detergent dispenser, a housing having a check valve provided therein in an expandable manner; a pushing portion having a head portion in contact with the check valve,

[0009] A sleeve is fitted along the length of the pushing portion so as to be relatively movable, and the pushing portion is always in contact with the end of the check valve during the process of connecting or disconnecting the housing.

[0010] Furthermore, the check valve includes a valve core that is installed inside the check valve so as to be expandable and scalable, and is used to open and close the check valve.

[0011] The pushing part has a hollow structure and a water supply hole is provided on the peripheral wall of the head part. When the pushing part is connected to the housing, it pushes open the valve core, forming a liquid flow path from the check valve to the pushing part.

[0012] Furthermore, the check valve further includes a front valve seat and a rear valve seat that are abutted against each other, a drain valve port is provided at one end of the front valve seat, and a liquid supply valve port is provided on a side wall of the rear valve seat.

[0013] The valve core is retractably mounted on the front valve seat and the rear valve seat and is used to open and close the drain valve port. When the pushing part connects to the housing, it pushes open the valve core, forming a liquid flow path from the liquid supply valve port to the pushing part. Furthermore, a protrusion is provided on the outer wall of the sleeve.

[0014] An external first spring is fitted to the pushing portion, one end of which is connected to the outer wall of the pushing portion and the other end of which is connected to the inner wall of the sleeve, so as to movably connect the sleeve to the pushing portion.

[0015] Furthermore, a second spring is provided in the housing, one end of which is connected to the rear inner wall of the housing and the other end of which is connected to the rear valve seat of the check valve.

[0016] Furthermore, a second annular groove is provided on the outer peripheral wall of the front valve seat, a detection probe is provided on the side wall of the sleeve in the same direction as the head of the pushing part, and a hollow hole is provided around the housing, and after the pushing part is connected to the housing, the detection probe overlaps part or all of the hollow hole.

[0017] Furthermore, a first annular groove is provided on the outer peripheral wall of the sleeve, a first seal ring is provided in the first annular groove, and the distance between the first seal ring and the protrusion is shorter than the shortest distance from the hollow hole to the end of the housing. Furthermore, a second annular groove is provided on the outer peripheral wall of the front valve seat of the check valve, and a second seal ring is provided in the second annular groove, which seals the end of the housing and the side wall facing the front valve seat when the sleeve is separated from the housing.

[0018] Furthermore, the distance between the first seal ring and the second seal ring is equal to or greater than the shortest distance from the hollow hole to the end of the housing.

[0019] The present invention further provides a washing machine including the liquid detergent dispenser described above. [Effects of the Invention]

[0020] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art:

[0021] (1) In the present invention, a sleeve is installed outside the pushing part, and when the pushing part is connecting to or disconnecting from the housing, the sleeve is always abutting against the end of the front valve seat to form a seal. This prevents liquid detergent from remaining inside the housing, and when the housing and the pushing part are disconnected, no liquid drips, preventing waste and avoiding inconvenience to the user.

[0022] (2) In the present invention, a protrusion is provided on the outer peripheral wall of the first sleeve, which determines the length of the sleeve extending into the housing after the sleeve is inserted into the housing and the protrusion contacts the end of the housing. When the first spring is compressed, the pushing part extends opposite the sleeve and abuts against the valve core, and the pushing part pushes the valve core to disconnect it from the liquid supply valve port, ensuring that the check valve can be fully opened.

[0023] (3) The present invention provides a rectangular opening in the first sleeve and a position limiting block installed on the outer periphery of the pushing portion, and the position limiting block is slidably fitted into the rectangular opening, thereby ensuring stability during the sleeve's forward and backward extension and contraction process.

[0024] (4) In the present invention, a detection probe is installed on the side wall of one end of the sleeve, and at the same time, a hollow hole is opened in the housing. When the connection between the pushing part and the housing is completed, at least a part of the detection probe is exposed to the hollow hole, so that the detection probe can come into contact with the liquid outside the housing, thereby detecting the conductivity, pH value or other water quality information of the liquid detergent, and making corresponding judgments based on the detected water quality information of the liquid detergent.

[0025] (5) The present invention provides a first seal ring on the outer wall of the sleeve. The distance between the first seal ring and the protrusion is shorter than the shortest distance from the hollow hole to the end of the housing. This ensures that the first seal ring will not move to the hollow hole when the housing is continuously moved to the pushing part. This also ensures the sealing performance when the housing is connected to the pushing part, and ensures that the liquid detergent will not leak through the gap between the sleeve and the housing.

[0026] (6) The present invention provides a second seal ring on the outer peripheral wall of the front valve seat. When the sleeve is separated from the housing and the pushing part is pushed out of the housing to disconnect the connection, the check valve causes the second seal ring to gradually form a seal between the front valve seat and the housing due to the rebound action of the second spring. After the sleeve is completely separated, the second seal ring seals at the end portion of the housing, preventing liquid detergent from leaking out of the hollow hole.

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0028] The diagrams are used as part of the present invention to provide a further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to interpret the present invention, but do not unduly limit the present invention. Needless to say, the diagrams described below are only one embodiment, and those skilled in the art can obtain other diagrams based on these diagrams without performing creative activities. [Brief explanation of the drawings]

[0029] [Figure 1] FIG. 1 is a schematic front view of the structure of a liquid detergent dispenser according to an embodiment of the present invention. [Figure 2] FIG. 2 is an axonometric view of the liquid detergent dispenser according to the embodiment of the present invention. [Figure 3] FIG. 3 is a cross-sectional view showing a connection state between the housing and the pushing portion of the liquid detergent dispenser according to the embodiment of the present invention. [Figure 4]FIG. 4 is a structural schematic diagram of the sleeve of the liquid detergent dispenser according to the embodiment of the present invention. [Figure 5] FIG. 5 is a structural schematic diagram of a liquid detergent dispenser according to an embodiment of the present invention in a detached state. [Figure 6] FIG. 6 is a cross-sectional view of the housing of the liquid detergent dispenser in the connected state according to the embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view of a pushing portion of the liquid detergent dispenser in the connected state according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0030] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will refer to the drawings in the embodiments of the present invention and clearly and completely describe the technical solutions in the embodiments. The following embodiments are used to explain the present invention but are not used to limit the scope of the present invention.

[0031] Furthermore, in describing the present invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," and "outer" are based on the orientations or positional relationships shown in the drawings, and are merely intended to facilitate and simplify the description of the present invention. They do not indicate or imply that a specified device or part is in a particular orientation, or is configured or operated in a particular orientation, and therefore should not be understood as limiting the present invention.

[0032] Furthermore, in the description of the present invention, unless otherwise clearly specified or limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense. For example, they may mean fixedly connected, detachably connected, integrally connected, mechanically connected, or electrically connected. They may also mean directly connected or indirectly connected via an intermediate medium. Those skilled in the art will be able to understand the specific meanings of the above terms in this application according to the specific circumstances.

[0033] The invention will now be explained in more detail with reference to the drawings.

[0034] As shown in FIGS. 1 to 7, an embodiment of the present invention provides a liquid detergent dispenser including a housing 6 and a pushing part 1.

[0035] A check valve 7 is provided inside the housing 6 so as to be expandable and contractible, and the head of the pushing portion 1 abuts against the check valve 7 .

[0036] A sleeve 2 is fitted along the length of the pushing part 1 so as to be relatively movable, i.e., the sleeve 2 is slidably fitted on the outside of the pushing part 1. The pushing part 1 is always in contact with the end of the check valve 7 during the process of connecting or disconnecting the housing 6.

[0037] According to the present invention, when the pushing part 1 and the housing 6 are connected, the pushing part 1 is inserted into the chamber of the housing 6, and the head of the pushing part 1 pushes open the check valve 7, thereby allowing communication between the check valve 7 and the pushing part 1. The inside and outside of the sleeve 2 are both sealed and slidably attached to the pushing part 1 and the housing 6. When the pushing part 1 is released from the housing 6, no liquid detergent remains in the housing 6 during the entire process, and no liquid detergent drips until the pushing part 1 is completely pushed out and released. This not only saves resources but also prevents soiling of the washing machine or the ground, ensuring a comfortable user experience. Furthermore, the check valve 7 includes a valve core 73 that is slidably attached to the inside of the check valve 7 and is used to open and close the check valve 7.

[0038] The pushing part 1 has a hollow structure, and a water supply hole 12 is provided on the peripheral wall of the head part. When the pushing part 1 is connected to the housing 6, it pushes open the valve core 73, forming a liquid flow path from the check valve 7 to the pushing part 1.

[0039] The pushing part 1 may have a tubular structure, a rectangular columnar structure, or the like. Preferably, the head of the pushing part 1 is conical, and the diameter of the head is small, which makes it easy to press against the valve core 73 of the check valve 7 after it comes into contact with it. In addition, a flow path for flowing liquid detergent is provided inside the pushing part 1. The water supply hole 12 is provided in the peripheral wall of the pushing part 1, and an opening is provided at one end of the pushing part 1 remote from the water supply hole 12.

[0040] Furthermore, the diameter of the holes near the head inside the pushing part 1 is smaller than the diameter of the holes near the rear part, and they are arranged in a stepped manner, so that when the liquid detergent moves from the head to the rear part, the pressure of the liquid gradually decreases, ensuring stable drainage. According to the present invention, the valve core 73 of the check valve 7 adopts a telescopic opening and closing method. The inside of the pushing part 1 is hollow, and a water inlet 12 is opened on the peripheral wall of the head of the pushing part 1. When the pushing part 1 pushes open the valve core 73, the check valve 7 flows, thereby forming an entire liquid flow path between the check valve 7 and the pushing part 1, ensuring that the liquid detergent can flow into the pushing part 1 through the check valve 7 and finally be dispensed into the washing machine.

[0041] After the pushing part 1 and the housing 6 come into contact with each other, a closed liquid path is formed between them. The sleeve 2 is installed outside the pushing part 1, and the sleeve 2 abuts against the end of the check valve 7. Therefore, liquid detergent does not accumulate at the connection where the pushing part 1 and the housing 6 come into contact with each other, and after the pushing part 1 is pushed out and separated from the housing 6, no liquid dripping occurs.

[0042] Furthermore, the check valve 7 further includes a front valve seat 71 and a rear valve seat 76 that are abutted against each other, with a drain valve port 77 provided at one end of the front valve seat 71 and a supply valve port 78 provided on the side wall of the rear valve seat 76.

[0043] The valve core 73 is installed on the front valve seat 71 and the rear valve seat 76 so as to be extendable and scalable, and is used to open and close the drain valve port 77. When the pushing part 1 connects to the housing 6, it pushes open the valve core 73, forming a liquid flow path from the liquid supply valve port 78 to the pushing part 1.

[0044] According to the present invention, the check valve 7 includes a front valve seat 71 and a rear valve seat 76. The front valve seat 71 and the rear valve seat 76 are abutted and partially fitted together to achieve connection. A drain valve port 77 is opened at the front end of the front valve seat 71. The valve core 73 is movably installed between the front valve seat 71 and the rear valve seat 76, and a third spring 74 restores the valve core 73.

[0045] When the pushing part 1 is connected to the housing 6, the head of the pushing part 1 abuts against the valve core 73 of the check valve 7, and a liquid supply valve port 78 is further provided on the side wall of the rear valve seat 76. The head of the pushing part 1 pushes open the valve core 73 of the check valve 7, thereby separating the valve core 73 from the liquid discharge valve port 77, thereby realizing flow through the housing 6.

[0046] The valve core 73 is contacted and pushed toward the rear valve seat 76, so that the valve core 73 is disconnected from the drain valve port 77, and a liquid flow path is formed from the liquid supply valve port 78 to the drain valve port 77, and further through the water supply hole 12 of the pushing part 1 into its hollow interior.

[0047] Furthermore, when the sleeve 2 on the outer periphery of the pushing part 1 is inserted into the chamber of the housing 6, it comes into contact with the end of the front valve seat 71. During the process of connecting or disconnecting the pushing part 1 to the housing 6, the sleeve 2 is always in sealing contact with the front valve seat 71. As a result, the entire liquid path from the check valve 7 to the pushing part 1 is always blocked by the inner wall of the housing 6, and no liquid detergent remains at the connection between the housing 6 and the pushing part 1. After the housing 6 and the pushing part 1 are disconnected, any remaining liquid detergent will not drip out forcefully, causing dripping. Not only is there no waste, but the washing machine or the ground will not be soiled, ensuring a comfortable user experience.

[0048] Furthermore, a protrusion 22 is provided on the outer wall of the sleeve 2 .

[0049] A first spring 3 is fitted to the outside of the pushing portion 1, one end of which is connected to the outer wall of the pushing portion 1 and the other end of which is connected to the inner wall of the sleeve 2, thereby connecting the sleeve 2 to the pushing portion 1 in a movable manner.

[0050] Preferably, the sleeve 2 includes a first sleeve 21 and a second sleeve 25 . A protrusion 22 is provided on the outer peripheral wall of the first sleeve 21, and the protrusion 22 abuts against the end of the housing 6.

[0051] One end of the second sleeve 25 is connected to the first sleeve 21 , and the other end of the second sleeve 25 abuts against the end of the front valve seat 71 .

[0052] A protrusion 26 is provided at the connection portion between the second sleeve 25 and the first sleeve 21, a stopper shoulder 11 is provided on the outer periphery of the pushing portion 1, and a first spring 3 is covered between the stopper shoulder 11 of the pushing portion 1 and the protrusion 26.

[0053] According to the present invention, the ends of the first sleeve 21 and the second sleeve 25 abut against each other, the interiors of the two sleeves are in communication, and the sleeve 2 consisting of both is fitted onto the outside of the pushing part 1. Furthermore, a protrusion 26 is provided inside the connecting portion of the first sleeve 21 and the second sleeve 25, and at the same time, a stopper shoulder 11 is provided on the outer circumferential wall of the pushing part 1. The first spring 3 is fitted onto the outer periphery of the pushing part 1 between the protrusion 26 and the stopper shoulder 11, and the elastic force of the first spring 3 realizes the movement and return of the sleeve 2 relative to the pushing part 1.

[0054] During the entire process of connecting or disconnecting the pushing part 1, the end of the sleeve 2 can always be in sealing contact with the end of the front valve seat 71, ensuring that the liquid flow path formed between the check valve 7 in the housing 6 and the pushing part 1 is always sealed and does not overflow into the housing 6.

[0055] Specifically, a protrusion 22 is provided on the outer peripheral wall of the first sleeve 21. As the housing 6 moves to one side of the pushing part 1, the sleeve 2 continues to extend into the housing 6 until it abuts against the protrusion 22. During the subsequent continuous movement, the length of extension of the sleeve 2 into the housing 6 is determined, and the first spring 3 is compressed, causing the pushing part 1 to extend opposite the sleeve 2 and abut against the valve core 73, so that the pushing part 1 can push the valve core 73 to disconnect it from the liquid supply valve port 77 and ensure that the check valve 7 can be fully opened.

[0056] Furthermore, the inner diameter of the second sleeve 25 is smaller than the inner diameter of the first sleeve 21, and when the two come into contact with each other, the protrusion 26 is formed.

[0057] According to the present invention, the first sleeve 21 and the second sleeve 25 may be joined by welding or by a removable screw-type method. The inner diameter of the first sleeve 21 is larger than that of the second sleeve 25. If the inner diameters of the first sleeve 21 and the second sleeve 25 are the same, the end face of the second sleeve 25 has an end face that protrudes to face the first sleeve 21 when they are joined, i.e., the protrusion 26. The first spring 3 is fitted onto the outer periphery of the pushing part 1, and the protrusion 26 and the stopper shoulder 11 position the end of the first spring 3, ensuring quick installation and position restriction of the first spring 3.

[0058] Furthermore, a rectangular opening 23 is provided in the first sleeve 21, extending along the length of the pushing portion 1, and a position limiting block 4 is installed on the outer periphery of the pushing portion 1 and slidably connected to the rectangular opening 23.

[0059] According to the present invention, two parallel rectangular openings 23 are formed in the side wall of the first sleeve 21, and a position limiting block 4 is installed outside the pushing part 1, and the position limiting block 4 is located within the rectangular opening 23. Referring to Fig. 1, the upper and lower end surfaces of the position limiting block 4 contact the side walls in the length direction of the rectangular opening 23, and when the pushing part 1 is connected to the housing 6 and the sleeve 2 enters the housing 6, the mutual engagement of the position limiting block 4 and the rectangular opening 23 ensures the stability of the sleeve 2 during the process of extension and retraction.

[0060] Specifically, the position limiting block 4 is designed to be rotatable or extendable so that it can be easily attached to the pushing part 1 and slide back and forth. Taking the extendable type as an example, a groove is opened on the outer circumferential wall of the pushing part 1, and the inside is connected to the position limiting block 4 by an elastic member. When attaching the sleeve 2 to the outer periphery of the pushing part 1, it is easy to simply press the position limiting block 4 into the groove, and then release it when the rectangular opening 23 of the sleeve 2 surrounds the position limiting block 4, and the elastic member returns to its original position, causing the position limiting block 4 to protrude from the surface of the pushing part 1 and achieve a slidable connection with the rectangular opening 23.

[0061] Furthermore, a second spring 75 is provided in the housing 6 , one end of which is connected to the rear inner wall of the housing 6 and the other end of which is connected to the rear valve seat 76 of the check valve 7 . According to the present invention, the interior of the housing 6 is connected to the rear valve seat 76 of the check valve 7 by a second spring 75. Specifically, an annular protrusion is provided at the rear of the housing 6, one end of the second spring 75 is attached to the outside of the protrusion, and the outer diameter of the rear valve seat 76 is smaller than the outer diameter of the front valve seat 71, thereby forming opposing annular protrusions, and the other end of the second spring 75 is attached to the outside of the rear valve seat 76. When the pushing part 1 is inserted into the housing 6, the entire check valve 7 moves toward the interior of the housing 6, and the action of the second spring 75 causes the front valve seat 71 to abut against the sleeve 2, providing closer contact.

[0062] Furthermore, a third annular groove 14 is provided on the head peripheral wall of the pushing part 1, and a third seal ring 9 is provided in the third annular groove 14, which is used to seal the front valve seat 71 and the pushing part 1 when the pushing part 1 is connected to the housing 6.

[0063] 3, according to the present invention, the third seal ring 9 installed on the head of the pushing part 1 is located to the right of the water inlet 12, i.e., on the side of the water inlet 12 away from the front valve seat 71. After the pushing part 1 and the housing 6 are fully engaged, the head of the pushing part 1 pushes open the valve core 73, at which time the third seal ring 9 and the inner wall of the front valve seat 71 are sealed, ensuring that the liquid detergent flows into the water inlet 12 through the drain valve port 77.

[0064] Furthermore, a detection probe 13 is provided on the side wall of the sleeve 2 in the same direction as the head of the pushing portion 1, and a hollow hole 61 is provided around the housing 6, and after the pushing portion 1 is connected to the housing 6, the detection probe 13 overlaps part or all of the hollow hole 61. According to the present invention, a detection probe 13 is installed on the side wall at one end of the sleeve 2, extending in the longitudinal direction of the sleeve 2, and a lead wire is installed inside the pushing part 1. A mounting seat 15 is installed on the side wall at one end of the pushing part 1 remote from the housing 6, and the lead wire is drawn out along the mounting seat 15. The detection probe 13 and the lead wire are connected by a contact type electrical connection. The sleeve 2 abuts against the end of the check valve 7 in the housing 6, and the detection probe 13 is connected to the lead wire, closing the entire electrical circuit and establishing electrical continuity for the detection probe 13.

[0065] By opening a plurality of hollow holes 61 in the peripheral side wall of the housing 6, when the connection between the pushing part 1 and the housing 6 is completed, at least a part of the detection probe 13 is exposed to the hollow holes 61, so that the detection probe 13 can come into contact with the liquid outside the housing 6 and thereby detect the conductivity, pH value or other water quality information of the liquid detergent, and make corresponding judgments based on the detected water quality information of the liquid detergent, such as the remaining amount of liquid detergent, the flow speed of the liquid detergent, etc., and then carry out subsequent processing accordingly.

[0066] Furthermore, a first annular groove 24 is provided on the outer peripheral wall of the sleeve 2, and a first seal ring 5 is provided in the first annular groove 24, and the distance between the first seal ring 5 and the protrusion 22 is shorter than the shortest distance from the hollow hole 61 to the end of the housing 6. Specifically, a first annular groove 24 is formed in the outer peripheral wall of the second sleeve 25, and the first seal ring 5 is fitted into the first annular groove 24.

[0067] According to the present invention, a first annular groove 24 is provided on the outer periphery of the second sleeve 25, and the first seal ring 5 is fitted therein, thereby realizing a seal on the side wall between the sleeve 2 and the housing 6. More specifically, when the pushing part 1 extends into and connects with the housing 6, the first seal ring 5 of the second sleeve 25 is located in the overlapping area between the second sleeve 25 and the housing 6, thereby always ensuring the sealing performance between the second sleeve 25 and the housing 6.

[0068] At the same time, the distance between the first sealing ring 5 and the protrusion 22 is shorter than the shortest distance from the hollow hole 61 to the end of the housing 6, which ensures that when the housing 6 continues to move toward the pushing part 1, the first sealing ring 5 will not move to the hollow hole 61, and further ensures the sealing performance when the housing 6 is connected to the pushing part 1, and ensures that the liquid detergent will not permeate the gap between the sleeve 2 and the housing 6 and spill out.

[0069] Furthermore, a second annular groove 72 is provided on the outer peripheral wall of the front valve seat 71 of the check valve 7, and a second seal ring 8 is provided in the second annular groove 72, which seals the end of the housing 6 and the side wall facing the front valve seat 71 when the sleeve 2 is separated from the housing 6. According to the present invention, a second annular groove 72 is formed on the outer peripheral wall of the front valve seat 71 adjacent to its end, and the second sealing ring 8 is fitted therein. When the pushing part 1 is pushed out of the housing 6 to be disconnected, the check valve 7 causes the second sealing ring 8 to gradually form a seal between the front valve seat 71 and the housing 6 due to the rebound action of the second spring 75. After the check valve 7 is completely disconnected, the second sealing ring 8 forms a seal at the end portion of the housing 6 to prevent liquid detergent from leaking out of the hollow hole 61.

[0070] Furthermore, the distance between the first seal ring 5 and the second seal ring 8 is equal to or greater than the shortest distance from the hollow hole 61 to the end of the housing 6 .

[0071] According to the present invention, when the pushing part 1 is separated from the housing 6, the second spring 75 begins to push the check valve 7 to return, and the sleeve 2 and the pushing part 1 move together to the end of the housing 6. When the front valve seat 71 of the check valve 7 moves within the housing 6, the first sealing ring 5 seals with the end of the housing 6, and the second sealing ring 8 moves along the length of the hollow hole 61, so that the first sealing ring 5 and the second sealing ring 8 simultaneously form a sealed space at the end of the housing 6 without generating vacuum pressure, ensuring that the pushing part 1 can be easily pushed out and separated.

[0072] Specifically, under the action of the restoring force of the second spring 75, the first seal ring 5 of the second sleeve 25 has just been separated from at least one end of the housing 6, and the second seal ring 8 is inserted into the end of the housing 6 through the hollow hole 61 to seal the end of the housing 6. At the same time, the second seal ring 8 no longer forms a seal between the sleeve 2 and the housing 6. Therefore, when the sleeve 2 and the housing 6 are subsequently separated, the first seal ring 5 and the second seal ring 8 are not always sealed within the housing 6, and no vacuum pressure is generated between the two seal rings, ensuring that the pushing part 1 and the housing 6 can be easily pushed out and separated.

[0073] Furthermore, the first seal ring 5 and the second seal ring 8 are both V-shaped seal rings, and are installed back to back. According to the present invention, the first seal ring 5 and the second seal ring 8 have V-shaped cross sections. Referring to FIG. 3, the opening of the second seal ring 8 faces one side of the liquid supply valve port 78, and the opening of the first seal ring 5 faces the opposite side to the second seal ring 8.

[0074] By setting the opening directions of the first seal ring 5 and the second seal ring 8, the opening of the first seal ring 5 follows the direction in which the second sleeve 25 moves into the housing 6, and when the housing 6 moves to one side of the pushing part 1, the first seal ring 5 is easily deformed during the movement process and moves smoothly.

[0075] When the opening direction of the second seal ring 8 faces the rear of the housing 6, the action of the second spring 75 makes it easy for the pushing portion 1 to return to its original position in the process of being separated from the housing 6.

[0076] The present invention further provides a washing machine equipped with the above-mentioned liquid detergent dispenser, in which a retractable liquid storage case is installed at the front of the washing machine, and the drainage port of the liquid storage case is connected to the housing 6. Specifically, the end of the housing 6 is inverted outward to form a connecting ring 62, a thread is installed on the inner wall of the connecting ring 62, and a corresponding male thread is installed at the drainage port of the liquid storage case, thereby realizing connection of the housing 6, and the main body of the housing 6 is inserted into the liquid storage case.

[0077] As the housing 6 moves forward, it connects with the pushing part 1 installed at the liquid inlet of the washing machine, and the pushing part 1 pushes open the valve core 73 of the check valve 7 inside the housing 6, allowing circulation in the housing 6 and allowing the liquid detergent dispenser to dispense liquid detergent. At the same time, the sleeve 2 is slidably installed on the outside of the pushing part 1, and the sleeve 2 is always in contact with the front valve seat 71 on the check valve 7 to form a sealed state, so that no liquid drips will occur when the housing 6 is disconnected from the pushing part 1.

[0078] The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above through preferred embodiments, this is not intended to limit the present invention, and slight modifications or additions made by those skilled in the art using the technical content presented above, within the scope of the technical solution of the present invention, are considered to be equivalent embodiments that have been modified in an equivalent manner. Simple modifications, equivalent modifications, and additions made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention, are all within the scope of the solution of the present invention. [Explanation of symbols]

[0079] 1 Pushing part 11 Stopper Shoulder 12 Water supply hole 13 Detection probe 14 Third Annular Groove 15 Mounting seat 2 sleeves 21 First Sleeve 22 protrusions 23 Rectangular opening 24 First annular groove 25 Second Sleeve 26 Protrusion 3 First Spring 4 Position Restriction Blocks 5 First seal ring 6. Housing 61 Hollow hole 62 Connection Ring 7. Check valve 71 Front valve seat 72 Second annular groove 73 Valve Core 74 3rd Spring 75 Second Spring 76 Rear valve seat 77 Drainage valve port 78 Liquid supply valve port 8 Second seal ring 9 Third seal ring

[0080] It should be noted that these drawings and written description are not intended to limit the scope of the invention in any way, but are intended to explain the concept of the invention to those skilled in the art with reference to specific embodiments.

Claims

1. A liquid detergent dispenser, a housing (6) in which a check valve (7) is provided so as to be expandable and contractible; a pushing portion (1) whose head is in contact with the check valve (7), A liquid detergent dispenser characterized in that a sleeve (2) is fitted along the length of the pushing part (1) so as to be relatively movable, and the pushing part (1) is always abutted against the end of the check valve (7) during the process of connecting or disconnecting the housing (6).

2. The check valve (7) includes a valve core (73) that is installed inside the check valve (7) so as to be expandable and contractible, and is used to open and close the check valve (7); 2. The liquid detergent dispenser according to claim 1, wherein the pushing part (1) has a hollow structure, a water supply hole (12) is provided on the peripheral wall of the head part, and when the pushing part (1) is connected to the housing (6), it pushes open the valve core (73) to form a liquid flow path from the check valve (7) to the pushing part (1).

3. The check valve (7) further includes a front valve seat (71) and a rear valve seat (76) that are abutted against each other, a drain valve port (77) is provided at one end of the front valve seat (71), and a liquid supply valve port (78) is provided on a side wall of the rear valve seat (76). The liquid detergent dispenser of claim 2, wherein the valve core (73) is telescopically mounted on the front valve seat (71) and the rear valve seat (76) and is used to open and close the drain valve port (77). When the pushing part (1) connects to the housing (6), it pushes open the valve core (73) to form a liquid flow path from the liquid supply valve port (78) to the pushing part (1).

4. A protrusion (22) is provided on the outer wall of the sleeve (2), A liquid detergent dispenser as described in any one of claims 1 to 3, characterized in that a first spring (3) is attached to the outside of the pushing part (1), one end of which is connected to the outer wall of the pushing part (1) and the other end of which is connected to the inner wall of the sleeve (2), thereby movably connecting the sleeve (2) to the pushing part (1).

5. The liquid detergent dispenser of claim 3, characterized in that the housing (6) is provided with a second spring (75), one end of which is connected to the rear inner wall of the housing (6) and the other end of which is connected to the rear valve seat (76) of the check valve (7).

6. The liquid detergent dispenser of claim 4, characterized in that a detection probe (13) is provided on the side wall of the sleeve (2) in the same direction as the head of the pushing portion (1), a hollow hole (61) is provided around the housing (6), and after the pushing portion (1) is connected to the housing (6), the detection probe (13) overlaps part or all of the hollow hole (61).

7. The liquid detergent dispenser of claim 6, characterized in that a first annular groove (24) is provided on the outer wall of the sleeve (2), a first seal ring (5) is provided in the first annular groove (24), and the distance between the first seal ring (5) and the protrusion (22) is shorter than the shortest distance from the hollow hole (61) to the end of the housing (6).

8. The liquid detergent dispenser of claim 7, characterized in that a second annular groove (72) is provided on the outer peripheral wall of the front valve seat (71) of the check valve (7), and a second seal ring (8) is provided in the second annular groove (72), which seals the end of the housing (6) and the side wall opposite the front valve seat (71) when the sleeve (2) is separated from the housing (6).

9. The liquid detergent dispenser according to claim 8, characterized in that the distance between the first seal ring (5) and the second seal ring (8) is equal to or greater than the shortest distance from the hollow hole (61) to the end of the housing (6).

10. A washing machine comprising the liquid detergent dispenser according to any one of claims 1 to 9.

Images