A liquid detergent dispensing mechanism, a dispensing box, and a washing machine

Abstract

The present invention provides a pumping mechanism for automatically dispensing liquid detergent, including a piston connecting rod assembly, a valve core assembly, a first drive assembly, and a second drive assembly. One end of the valve core assembly is connected to the valve core rotating shaft, and the other end is connected to a plurality of pumping chambers; one side of the pumping chamber is unidirectionally connected to a detergent storage chamber, and the other side is provided with a one-way discharge port; the valve core rotating shaft is axially provided with a first through hole, one end of the piston connecting rod assembly is movably arranged in the first through hole, and the first through hole is selectively connected to the target pumping chamber through the valve core assembly. The present invention also provides a feeding box and a washing machine. The present invention can realize the automatic dispensing of two, three or even more kinds of liquid detergents through a pumping mechanism body, and has a simple structure. It is arranged in the feeding box body and occupies a small space. The piston connecting rod assembly changes the pressure in the target pumping chamber to control the pumping or releasing operation of the target pumping chamber on the liquid detergent, and can accurately control the amount of liquid detergent automatically dispensed.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a liquid detergent extraction mechanism, a feeding box and a washing machine for automatically feeding liquid detergent. Background Art

[0002] At present, all kinds of washing machines are equipped with a material box dispensing device for adding washing powder / laundry liquid / softener and other washing supplies, and users can choose and dispense according to their own needs. The material box assembly provided by the prior art usually includes a handle, an upper and lower box body and a washing liquid box. Before washing, the washing liquid box needs to be manually pulled and pushed, and then the washing powder, laundry liquid or softener is dispensed at the corresponding position of the washing liquid box. If the user has other items in his hand, it will be inconvenient to extract the washing liquid box.

[0003] In addition, the amount of washing supplies such as liquid detergent or softener in liquid form is difficult to control when manually adding, which will have a direct impact on the washing effect to a greater or lesser extent.

[0004] As people's requirements for living standards are getting higher and higher, customers' demand for washing machines to put liquid detergents, softeners and other liquid detergents is becoming more and more urgent. Existing automatic detergent dispensing devices mainly include single-chamber dispensing (mainly for dispensing laundry detergent) and double-chamber dispensing (mainly for dispensing laundry detergent and softener). The existing double-chamber dispensing device requires two extraction mechanisms to automatically dispense two kinds of detergents. Each extraction mechanism is connected to a cavity for holding liquid detergents and a cavity for dispensing, respectively. It involves at least two extraction mechanisms, two cavities for holding liquid detergents, and two cavities for dispensing. The arrangement position and connection relationship between the components need to be designed. The structure is relatively complex and the cost is high. In addition, there is also a extraction mechanism to realize the automatic dispensing of two kinds of detergents. At least two motors are required to drive the extraction mechanism to select the cavity for holding liquid detergents and the cavity for dispensing according to the type of detergents to be dispensed. There are many structural components and a large space is occupied. For devices with three or more cavities for automatically dispensing liquid detergents, there is no good technology on the market at present, and a more complex structure is required to achieve it. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a pumping mechanism for automatically dispensing liquid detergents, which can automatically dispense two, three or even more liquid detergents through a pumping mechanism body.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions.

[0007] The first object of the present invention is to provide a pumping mechanism for automatically dispensing liquid detergent, comprising a pumping mechanism body disposed in a feeding box body, the pumping mechanism body comprising a piston connecting rod assembly, a valve core assembly, a first drive assembly, and a second drive assembly; wherein,

[0008] One end of the valve core assembly is connected to the valve core rotating shaft, and the other end is connected to a plurality of extraction chambers; one side wall of the extraction chamber is in one-way communication with a detergent storage chamber of the feeding box body, and the other side wall is provided with a one-way discharge port 1244; the valve core rotating shaft is axially provided with a first through hole, and one end of the piston connecting rod assembly is movably arranged in the first through hole;

[0009] The first drive assembly drives the valve core shaft to rotate until the first through hole is selectively connected to the pumping chamber of the target, and the second drive assembly drives one end of the piston connecting rod assembly to axially reciprocate in the first through hole, changing the pressure in the pumping chamber of the target, so that the detergent in the detergent storage chamber that is unidirectionally connected to the pumping chamber of the target flows into the pumping chamber of the target or the detergent in the pumping chamber of the target flows out from the discharge port, thereby realizing the extraction or release of detergent.

[0010] Preferably, the piston-connecting rod assembly includes a piston connecting rod and a piston head, and the piston head fits into the first through hole to form a sealed space between the target extraction chamber connected to the first through hole and the outer wall of the piston head; one end of the piston connecting rod is connected to the piston head, and the other end is connected to the second drive assembly.

[0011] Preferably, the first driving assembly includes a motor with a motor shaft at one end, a driving gear coaxially arranged on the motor shaft, and a driven gear meshing with the driving gear; the motor rotates to drive the motor shaft to drive the driving gear and the driven gear to rotate, so that the valve core shaft rotates until the first through hole is connected to the target extraction chamber.

[0012] Preferably, the second driving assembly includes a rotating assembly, a rotating part, and a protruding rod eccentrically arranged on a surface of the rotating part, one end of the piston connecting rod is provided with a long hole, and one end of the protruding rod is movably arranged in the long hole; the rotating assembly drives the rotating part to rotate, so that the protruding rod performs a circular motion and reciprocates in the long hole, so as to guide the piston connecting rod assembly to reciprocate in the first through hole.

[0013] Preferably, the rotating assembly comprises a worm gear sleeved on the peripheral side of the motor shaft, a worm wheel meshing with the worm gear, a ratchet wheel is respectively provided on the driving gear and the worm wheel, and the two ratchet wheels rotate in opposite directions; the rotating member is a first ratchet wheel provided on the worm wheel; wherein,

[0014] The motor rotates to drive the motor shaft to drive the worm to rotate, and then drives the worm wheel to rotate, so that the protruding rod reciprocates in the long hole.

[0015] Preferably, the rotating assembly includes a bevel gear, and the bevel gear includes a driving bevel gear sleeved on the circumference of the motor shaft and a driven bevel gear meshing with the driving bevel gear. The driving gear and the driven bevel gear are respectively provided with a ratchet, and the two ratchet wheels rotate in opposite directions; the rotating member is a ratchet arranged on the driven bevel gear.

[0016] Preferably, the cross section of the convex rod is elliptical.

[0017] Preferably, during the reciprocating motion of the piston-connecting rod assembly, the long hole always covers the circular motion footprint of the convex rod, so that the second driving assembly only applies a force along the axial direction of the first through hole to the piston-connecting rod assembly.

[0018] Preferably, the length direction of the long hole is perpendicular to the reciprocating motion direction of the piston-connecting rod assembly.

[0019] Preferably, the reciprocating direction of the piston connecting rod is parallel to the rotation axis of the motor shaft.

[0020] Preferably, the valve core assembly comprises a movable valve plate connected to the valve core rotating shaft, a fixed valve plate affixed to the other side of the movable valve plate relative to the valve core rotating shaft, the movable valve plate is provided with a second through hole connected to the first through hole, a blind hole connected to the second through hole, the fixed valve plate is provided with a plurality of third through holes, and the plurality of third through holes are respectively connected to one of the pumping and releasing chambers; wherein,

[0021] The rotation of the valve core shaft drives the movable valve plate to rotate relative to the fixed valve plate until the blind hole is connected to the target extraction and discharge chamber, so that the first through hole is connected to the target extraction and discharge chamber.

[0022] Preferably, the number of the blind holes is two, and as the movable valve plate rotates, the two blind holes on the movable valve plate can be connected to the two third through holes at the same time.

[0023] Preferably, the number of the blind hole is one, and as the movable valve plate rotates, the movement path of the blind hole on the movable valve plate sequentially covers a plurality of third through holes.

[0024] Preferably, the valve core assembly further comprises a connecting member, one side of the connecting member is connected to one end of the valve core rotating shaft, and the other side is clamped and connected to the movable valve plate, and the connecting member is provided with a fourth through hole connected to the first through hole.

[0025] Preferably, the valve core assembly further comprises a fixing member whose surface is in contact with the fixed valve plate, and the fixing member is provided with a plurality of extraction and discharge chambers respectively connected with a plurality of the third through holes.

[0026] Preferably, a one-way valve is provided at the one-way connection between the extraction chamber and a detergent storage chamber of the feeding box body and at the discharge port, respectively, and the one-way valve is opened or closed as the pressure in the extraction chamber changes.

[0027] Preferably, the valve core assembly also includes a fixed sleeve fixedly connected to the shell of the feeding box body, which is a hollow structure with an opening on one side. One end of the valve core shaft rotates and passes through a side wall of the fixed sleeve. The connecting part and the movable valve plate are respectively rotatably arranged in the fixed sleeve, and the fixing part is fixedly connected to one side of the fixed sleeve.

[0028] Preferably, a plurality of first grooves are provided on the peripheral outer wall of the movable valve plate, and a plurality of first protrusions which are clamped and connected with the first grooves are provided on the periphery of one surface of the connecting member.

[0029] Preferably, a plurality of second grooves are provided on the peripheral outer wall of the fixed valve plate, and a plurality of second protrusions which are clamped and connected with the second grooves are provided on the periphery of one surface of the fixing member.

[0030] Preferably, a plurality of third grooves with openings on both sides are provided on the peripheral side of the fixing member, and a plurality of buckling members buckledly connected to the third grooves are provided on one surface of the fixing sleeve.

[0031] Preferably, the extraction chamber further comprises a plurality of suction ports protruding from the outer surface of the fixing member, and a one-way valve for one-way connection between the extraction chamber and the detergent storage chamber is arranged at the port of the suction port.

[0032] Preferably, a sealing ring is provided at a contact portion between the fixing member and the housing, and a contact portion between the fixing member and the fixed valve plate, respectively.

[0033] The second object of the present invention is to provide a feeding box for automatically dispensing liquid detergent, including a feeding box body, wherein the feeding box body includes a shell, a plurality of detergent storage chambers arranged in the shell, and a draw-out mechanism body as described above; a side wall of each draw-out chamber of the draw-out mechanism body is unidirectionally connected to a detergent storage chamber.

[0034] Preferably, it further comprises a plurality of liquid guiding cavities, each discharge port of the extraction and discharge cavity is communicated with a liquid guiding cavity, and the plurality of extraction and discharge cavities are not cross-connected with the same detergent storage cavity or are not cross-connected with the same liquid guiding cavity.

[0035] Preferably, a concave cavity is provided on the outer wall of the shell, and the valve core assembly is placed outside the concave cavity.

[0036] The third object of the present invention is to provide a washing machine, comprising a washing machine body, and also comprising a feeding box body as described above arranged in the washing machine body.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] (1) The present invention provides a pumping mechanism for automatically dispensing liquid detergents, which can automatically dispense two, three or even more liquid detergents through a pumping mechanism body. In a preferred embodiment, the two operations of selecting a target pumping chamber and dispensing can be completed by rotating a motor forward or reversely. The structure is simple and the space occupied is small, and the device is suitable for various fields that require the pumping of liquid detergents.

[0039] (2) In a preferred embodiment, the piston-connecting rod assembly is guided to reciprocate in the first through hole by the circularly rotating protruding rod. By controlling the shape and size of the protruding rod, the long hole, the first through hole, the second through hole, the blind hole, the third through hole, and the extraction chamber, the amount of liquid detergent automatically dispensed can be accurately controlled, which is easy to control.

[0040] (3) In a preferred embodiment, the pumping chamber is arranged in a fixing member, and the fixing member is connected to the fixed valve plate by a snap-fit ​​connection. When it is necessary to find the target pumping chamber, it is only necessary to align the blind hole of the movable valve plate with the third through hole on the fixed valve plate connected to the target pumping chamber. This makes it easy to accurately control the target pumping chamber to be found among a plurality of pumping chambers and to align the target pumping chamber.

[0041] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, some embodiments are described in detail below. The specific implementation of the present invention is given in detail by the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0043] Figure 1 It is a three-dimensional structural schematic diagram of the draw-out mechanism body of the present invention;

[0044] Figure 2 Schematic diagram of the explosion structure of the extraction mechanism body Figure 1 ;

[0045] Figure 3 Schematic diagram of the explosion structure of the extraction and release mechanism body of the present invention Figure 2 ;

[0046] Figure 4 It is a structural schematic diagram of the ratchet mechanism of the present invention;

[0047] Figure 5 A cross-sectional view of the main body of the extraction mechanism of the present invention Figure 1 ;

[0048] Figure 6 A cross-sectional view of the main body of the extraction mechanism of the present invention Figure 2 ;

[0049] Figure 7 It is a schematic diagram of the three-dimensional structure of the feeding box of the present invention;

[0050] Figure 8 It is a schematic diagram of the explosion structure of the feeding box of the present invention;

[0051] Fig. 9 It is a schematic diagram of the three-dimensional structure of the shell of the feeding box of the present invention.

[0052] In the figure:

[0053] 100. Extraction mechanism body;

[0054] 11. Piston connecting rod assembly; 111. Piston connecting rod; 1111. Long hole; 112. Piston head; 113. Piston rubber ring;

[0055] 12. Valve core assembly; 121. Moving valve disc; 1211. Second through hole; 1212. Blind hole; 1213. First groove; 122. Fixed valve disc; 1221. Third through hole; 1222. Second groove; 123. Connector; 1231. First convex block; 124. Fixing member; 1241. Second convex block; 1242. Third groove; 1243. Suction port; 1244. Discharge port; 125. Fixing sleeve; 1251. Buckle; 126. Sealing ring;

[0056] 13. Valve core rotating shaft; 131. First through hole;

[0057] 14, extraction and discharge chamber; 141, first extraction and discharge chamber; 142, second extraction and discharge chamber; 143, third extraction and discharge chamber;

[0058] 15. first driving assembly; 151. motor; 152. motor shaft; 153. driving gear; 1531. second pawl; 154. driven gear;

[0059] 16, second driving assembly; 161, convex rod; 162, worm; 163, worm wheel; 1631, first pawl;

[0060] 17, ratchet; 171, first ratchet; 172, second ratchet;

[0061] 200, feeding box body;

[0062] 21. Shell; 211. Cavity. DETAILED DESCRIPTION

[0063] The present invention is further described in detail below in conjunction with the accompanying drawings, and the aforementioned and other purposes, features, aspects and advantages of the present invention will become more obvious, so that those skilled in the art can implement it with reference to the text of the specification. In the accompanying drawings, for the sake of clarity, the shapes and sizes can be enlarged, and the same reference numerals will be used in all figures to indicate the same or similar parts. In the following description, words such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or position relationship shown in the accompanying drawings. In particular, "height" is equivalent to the size from top to bottom, "width" is equivalent to the size from left to right, and "depth" is equivalent to the size from front to back. These relative terms are for the convenience of explanation and are generally not intended to require specific orientation. Terms related to attachment, connection, etc. (for example, "connection" and "attachment") refer to the relationship between these structures directly or indirectly fixed or attached to each other through intermediate structures, and movable or rigid attachment or relationship, unless otherwise explicitly stated.

[0064] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0065] Example 1

[0066] like Figures 1 to 3 As shown, the present invention provides a pumping mechanism for automatically dispensing liquid detergent, including a pumping mechanism body 100 disposed in a feeding box body 200, the pumping mechanism body 100 includes a piston connecting rod assembly 11, a valve core assembly 12, a first drive assembly 15, and a second drive assembly 16; wherein,

[0067] One end of the valve core assembly 12 is connected to the valve core rotating shaft 13, and the other end is connected to a plurality of sealed extraction and discharge chambers 14; each extraction and discharge chamber 14 is provided with a one-way discharge port 1244, one side wall of the extraction and discharge chamber 14 is in one-way communication with a detergent storage chamber of the feeding box body 200, and the other side wall is provided with a one-way discharge port 1244, and the discharge port 1244 corresponds to a liquid guide chamber, and each extraction and discharge chamber 14 is not cross-connected with the same detergent storage chamber or cross-conducted with the same liquid guide chamber, and the valve core rotating shaft 13 is axially provided with a first through hole 131, and one end of the piston connecting rod assembly 11 is movably arranged in the first through hole 131, and the first through hole 131 is selectively connected with one of the plurality of extraction and discharge chambers 14 through the valve core assembly 12;

[0068] After the target extraction chamber 14 is set, the first drive component 15 drives the valve core shaft 13 to rotate to the first through hole 131 to selectively connect with the target extraction chamber 14, and the second drive component 16 drives one end of the piston connecting rod assembly 11 to axially reciprocate in the first through hole 131, thereby changing the pressure in the target extraction chamber 14, so that the liquid detergent in the detergent storage chamber unidirectionally connected with the target extraction chamber 14 flows into the target extraction chamber 14 or the liquid detergent in the target extraction chamber 14 flows out from the discharge port 1244, thereby realizing the extraction or release of liquid detergent.

[0069] In the present embodiment, the number of detergent storage chambers and extraction chambers 14 are three, namely, a first extraction chamber 141, a second extraction chamber 142, and a third extraction chamber 143. For example, when the extraction mechanism body 100 of the present invention is applied to a washing machine, the liquid conducting chamber refers to a chamber for directly pouring detergent into the washing machine bucket, and the number of liquid conducting chambers is set according to user needs. Furthermore, the number of liquid conducting chambers is three. The detergent storage chamber, the liquid conducting chamber, and the extraction chamber 14 correspond one to one to form three extraction systems. The first extraction chamber 141, the second extraction chamber 142, and the third extraction chamber 143 are respectively used for the extraction and discharge of the three most commonly used detergents: laundry detergent, softener, and fragrance. Figure 5 As shown, the first through hole 131 is connected to the first extraction chamber 141. At this time, the first extraction chamber 141 is the target extraction chamber.

[0070] like Figure 2 , Figure 3 As shown, the piston connecting rod assembly 11 includes a piston connecting rod 111 and a piston head 112. The piston connecting rod 111 is a rectangular thin plate. The outer contour shape and size of the piston head 112 are consistent with the contour shape and size of the first through hole 131. The piston head 112 fits in the first through hole 131, so that a sealed space is formed between the target extraction chamber 14 connected to the first through hole 131 and the outer wall of the piston head 112; one end of the piston connecting rod 111 is connected to the piston head 112, and the other end is connected to the second driving assembly 16. Further, at least two circles of piston rubber rings 113 are provided around the piston head to increase the sealing performance. The piston rubber rings 113 are tightly attached between the contour of the first through hole 131 and the outer wall of the piston head 112. When the piston head 112 reciprocates in the first through hole 131 along with the piston connecting rod 111, the sealing degree in the extraction chamber 14 is ensured.

[0071] like Figures 1 to 3As shown, the first driving assembly 15 includes a motor 151 with a motor shaft 152 at one end, a driving gear 153 coaxially arranged on the motor shaft 152, and a driven gear 154 meshing with the driving gear 153; the motor 151 rotates to drive the motor shaft 152 to drive the driving gear 153 and the driven gear 154 to rotate, so that the valve core shaft 13 can rotate to the first through hole 131 to communicate with the target extraction and discharge chamber 14, so that the first through hole 131 where the piston connecting rod assembly 11 is located is aligned with the target extraction and discharge chamber 14 to extract or press, so as to change the pressure of the target extraction and discharge chamber 14.

[0072] In one embodiment, the second driving assembly 16 is a linear motor connected to one end of the piston connecting rod assembly 11 , and directly drives the piston connecting rod 111 and the piston head 112 to reciprocate in the first through hole 131 .

[0073] In one embodiment, the second driving assembly 16 includes a rotating assembly, a rotating member, and a protruding rod 161 eccentrically disposed on a surface of the rotating member. A long hole 1111 is disposed at one end of the piston connecting rod 111, and one end of the protruding rod 161 is movably disposed in the long hole 1111. The rotating assembly drives the rotating member to rotate, so that the protruding rod 161 performs a circular motion and reciprocates in the long hole 1111, so as to guide the piston connecting rod assembly 11 to reciprocate in the first through hole 131. In one embodiment, the long hole 1111 is an elongated through hole, and one end of the protruding rod 161 penetrates the long hole 1111 and can reciprocate along the inner contour direction of the long hole 1111. In one embodiment, the long hole 1111 is an elongated blind hole, and one end of the protruding rod 161 is located in the long hole 1111 and can reciprocate along the inner contour direction of the long hole 1111.

[0074] Furthermore, if Figure 4 As shown, in this embodiment, the rotating assembly includes a worm 162 sleeved on the circumferential side of the motor shaft 152, and a worm wheel 163 meshing with the worm 162. A ratchet 17 is respectively provided on the driving gear 153 and the worm wheel 163. The two ratchet wheels 17 rotate in opposite directions. The rotating member is a first ratchet 171 on the worm wheel 163. The motor 151 rotates to drive the motor shaft 152 to drive the worm 162 to rotate, and drives the worm wheel 163 to rotate, so that the protruding rod 161 reciprocates in the long hole 1111.

[0075] The worm wheel 163 is provided with a first ratchet 171, and a first pawl 1631 is provided in the worm wheel 163 for unidirectional transmission with the first ratchet 171, so that the worm wheel 163 and the first ratchet 171 form a first ratchet mechanism; the driving gear 153 is provided with a second ratchet 172, and a second pawl 1531 is provided in the driving gear 153 for unidirectional transmission with the second ratchet 172, so that the driving gear 153 and the second ratchet 172 form a second ratchet mechanism, the second ratchet 172 is fixedly connected to the motor shaft 152, and the rotation directions of the first ratchet 171 and the second ratchet 172 are opposite.

[0076] The first pawl 1631 can only rotate the first ratchet 171 in one direction as the worm wheel 163 rotates, while the first ratchet 171 cannot rotate in another direction. The second ratchet 172 can only apply force to the second pawl 1531 in one direction as the motor shaft 152 rotates, so that the driving gear 153 can only rotate in one direction, while the driving gear 153 cannot rotate in another direction.

[0077] For example, when the motor 151 is in forward transmission, the motor shaft 152 drives the worm 162 and the second ratchet 172 on the driving gear 153 to rotate, and the second ratchet 172 drives the second pawl 1531 to drive the driving gear 153 to rotate, and drives the driven gear 154 to rotate, and finally drives the valve core shaft 13 to rotate until the first through hole 131 is connected with the target extraction chamber 14. At this time, due to the setting of the first ratchet 171 of the worm wheel 163, the rotation of the worm 162 drives the worm wheel 163 to rotate, and the first pawl 1631 rotates accordingly, while the first ratchet 171 does not contact the first pawl 1631, and thus does not rotate in the worm wheel 163, and the convex rod 161 eccentrically set on the outer surface of the first ratchet mechanism 171 is also stationary and does not perform circular motion, so that the piston connecting rod assembly 11 is in a non-working state.

[0078] When the motor 151 rotates in reverse, the second ratchet 172 rotates with the motor shaft 152, but the second ratchet 1531 does not contact the second ratchet 172, and the second ratchet 172 idles relative to the driving gear 153, and the driving gear 153 does not rotate, and the valve core shaft 13 does not rotate. At this time, the worm 162 drives the worm wheel 163 to rotate, and the first ratchet 1631 on the worm wheel 163 rotates, driving the first ratchet 171 to rotate, so that the convex rod 161 eccentrically arranged on the outer surface of the first ratchet 171 performs a circular motion and reciprocates in the long hole 1111, so that the piston connecting rod assembly 11 reciprocates in the first through hole 131.

[0079] In one embodiment, the motion assembly includes a bevel gear, which includes an active bevel gear sleeved on the circumference of the motor shaft 152 and a driven bevel gear meshing with the active bevel gear. The active gear 153 and the driven bevel gear are respectively provided with a ratchet, and the rotation directions of the two ratchets are opposite. The rotating member is a ratchet set on the driven bevel gear. Other technical features and driving steps of the motion assembly are the same as those in the embodiment in which the motion assembly is a worm gear and a worm, and are not repeated here.

[0080] In one embodiment, if Figure 1As shown, the cross-section of the protruding rod 161 is elliptical, the cross-section of the long hole 1111 is a rounded rectangle with unequal edges, the length of the protruding rod 161 is consistent with the width of the long hole 1111, and the protruding rod 161 can reciprocate along the contour of the long hole 1111, so that the distance of a one-way movement of the piston connecting rod assembly 11 can be determined according to the dimensions of the protruding rod 161 and the long hole 1111.

[0081] During the reciprocating motion of the piston-connecting rod assembly 11, the long hole 1111 always covers the circular motion footprint of the protruding rod 161, so that the second driving assembly 16 only applies a force along the axial direction of the first through hole 131 to the piston-connecting rod assembly 11. This is to prevent the force directed to the circumferential direction of the inner wall of the first through hole 131 from being applied to the piston-connecting rod assembly 11, thereby increasing the friction between the piston-connecting rod assembly 11 and the contour of the first through hole 131 during the reciprocating motion in the first through hole 131, resulting in difficulty or failure in the reciprocating motion of the piston-connecting rod assembly 11.

[0082] Furthermore, the length direction of the long hole 1111 is perpendicular to the reciprocating direction of the piston connecting rod assembly 11, and the required length of the long hole 1111 is minimum. The length of the long hole 1111 is consistent with the diameter of the circle where the protruding rod 161 moves in the circular motion, so that the long hole 1111 always covers the circular motion footprint of the protruding rod 161 during the reciprocating motion of the piston connecting rod assembly 11.

[0083] The reciprocating direction of the piston connecting rod 111 is parallel to the rotation axis of the motor shaft, which facilitates the design and layout of the structure.

[0084] In this embodiment, if Figure 2 , Figure 3As shown, the valve core assembly 12 includes a movable valve disc 121 connected to the valve core rotating shaft 13, and a fixed valve disc 122 that fits the other side of the movable valve disc 121 relative to the valve core rotating shaft 13. The movable valve disc 121 is provided with a second through hole 1211 connected to the first through hole 131, and a blind hole 1212 connected to the second through hole 1211. The fixed valve disc 122 is provided with a plurality of third through holes 1221, and the plurality of third through holes 1221 are respectively connected to a pumping chamber 14; wherein, the rotation of the valve core rotating shaft 13 drives the movable valve disc 121 to rotate relative to the fixed valve disc 122, and rotates until the blind hole 1212 is connected to one of the plurality of third through holes 1221, so that the first through hole 131 is connected to the target pumping chamber 14. In this embodiment, the number of the third through holes 1221 is three, and the number of the blind hole is one. The three third through holes 1221 are respectively connected to the first pumping chamber 141, the second pumping chamber 142, and the third pumping chamber 143. As the movable valve plate 121 rotates, the movement path of the blind hole 1212 on the movable valve plate 121 can sequentially cover the three third through holes 1221. When the target pumping chamber 14 is selected, the blind hole 1212 is moved to cover the third through hole 1221 connected to the target pumping chamber 14. Further, the central axis of the first through hole 131 coincides with the central axis of the third through hole 1221.

[0085] In another embodiment, the number of the blind holes 1212 is two. As the movable valve plate 121 rotates, the two blind holes 1212 on the movable valve plate 121 can be connected to the two third through holes 1221 at the same time. At this time, there are two pumping chambers 14 as the target pumping chambers 14, such as the first pumping chamber 141 and the second pumping chamber 142. For example, the two blind holes 1212 can be consistent in shape and size, and the two blind holes 1212 can be connected to the two third through holes 1221 at the same time, or one blind hole is connected to one third through hole 1221, and the other blind hole 1212 is in contact with the surface other than the third through hole 1221 of the fixed valve plate 122. For another example, the plurality of third through holes 1221 provided on the fixed valve plate 122 are respectively arranged on two circular paths of different diameters, and the two blind holes 1212 have different lengths. As the movable valve plate 121 rotates, the two blind holes 1212 can respectively cover one third through hole 1221 arranged on the circular paths of different diameters.

[0086] Furthermore, if Figure 2 , Figure 3 As shown, the valve core assembly 12 further includes a connecting member 123, one side of the connecting member 123 is connected to one end of the valve core rotating shaft 13, and the other side is connected to the movable valve plate 121 by clamping. The connecting member 123 is provided with a fourth through hole 1232 connected to the first through hole 131, and the shape and size of the fourth through hole 1232 are consistent with the shape and size of the first through hole 131. In one embodiment, the connecting member 123 and the valve core rotating shaft 13 are an integral structure; in another embodiment, the connecting member 123 and the valve core rotating shaft 13 are separately provided.

[0087] In one embodiment, the three extraction chambers 14 are all disposed in the shell 21 of the feeding box body 200 .

[0088] In one embodiment, if Figure 2 , Figure 3 As shown, the valve core assembly 12 also includes a fixing member 124 with one side being fitted with the fixed valve plate 122, and the fixing member 124 is provided with three extraction chambers 14 respectively connected with the three third through holes 1221, namely the first extraction chamber 141, the second extraction chamber 142, and the third extraction chamber 143. The extraction chamber 14 is in one-way communication with a detergent storage chamber of the feeding box body 200 through a one-way valve (not shown in the figure), and a one-way valve is provided at the discharge port 1244 of the extraction chamber 14. The discharge port 1244 is aligned with the liquid guiding chamber, and the liquid in the extraction chamber can flow into the liquid guiding chamber, while the liquid in the liquid guiding chamber cannot flow into the extraction chamber 14. In one embodiment, each extraction chamber 14 is in one-way communication with its corresponding liquid guiding chamber through a one-way valve. In another embodiment, each pumping chamber 14 is separately arranged from its corresponding liquid guiding chamber, that is, the pumping chamber 14 is not connected to the liquid guiding chamber, and one side of the pumping chamber 14 is provided with a one-way valve aligned with the opening of the liquid guiding chamber, so that the liquid in the pumping chamber 14 can be discharged into the liquid guiding chamber under the action of the piston-connecting rod assembly.

[0089] The pumping chamber 14 is arranged in the fixing member 124. The positional relationship between the fixing member 124 and the movable valve disc 121 and the fixed valve disc 122 is relatively easy to determine. The various parts are easy to align during assembly, and it is convenient to align the target pumping chamber 14 during automatic delivery. During automatic delivery, the three third through holes 1221 on the fixed valve disc 122 are aligned one by one with the first pumping chamber 141, the second pumping chamber 142, and the third pumping chamber 143 on the fixing member. The first driving component 15 drives the valve core rotating shaft 13 to rotate and drives the movable valve disc 121 to rotate until the blind hole 1212 on the movable valve disc 121 is connected to the third through hole 1221 connected to the target pumping chamber 14. At this time, the first through hole 131, the second through hole 1211, the blind hole 1212, The third through hole 1221 connected to the target extraction chamber 14 and the target extraction chamber 14 are in a sequentially connected state, and then the second driving assembly 16 drives the piston connecting rod assembly 11 to reciprocate in the first through hole 131 to change the pressure in the target extraction chamber 14, thereby extracting liquid detergent from the target detergent storage chamber to the target extraction chamber 14 or discharging liquid detergent from the target extraction chamber 14 to the target liquid guide chamber, so as to accurately control the delivery of liquid detergent. As shown in the figure, the target extraction chamber 14 is the first extraction chamber 141.

[0090] Further, such as Figure 2 , Figure 3As shown, the valve core assembly 12 also includes a fixed sleeve 125 fixedly connected to the shell 21 of the feeding box body 200, which is a hollow structure with one side open. One end of the valve core shaft 13 rotates and passes through a side wall of the fixed sleeve 125. The connecting piece 123 and the movable valve plate 121 are respectively rotatably arranged in the fixed sleeve 125, and the fixing piece 124 is fixedly connected to one side of the fixed sleeve 125.

[0091] In one embodiment, if Figure 2 , Figure 3 As shown, the cross sections of the connecting member 123, the movable valve plate 121, the fixed valve plate 122, the fixing member 124, and the fixing sleeve 125 are all circular. This facilitates calculation of the number of rotations of the motor 151 required when the blind hole 1212 of the movable valve plate 121 and the third through hole 1221 of the fixed valve plate 122 are connected, and facilitates control of alignment of the blind hole 1212 and the third through hole 1221 connected to the target extraction and discharge chamber 14.

[0092] like Figure 2 , Figure 3 As shown, a plurality of first grooves 1213 are provided on the outer wall of the peripheral side of the movable valve disc 121, and a plurality of first protrusions 1231 are provided on the periphery of one surface of the connecting member 123 to be clamped and connected with the first grooves 1213. There are two first grooves 1213 and two first protrusions 1231. The movable valve disc 121 is clamped with the connecting member 123 from the side where the connecting member 123 is provided with the first protrusions 1231, and the two first grooves 1213 are located in the same diameter direction of the movable valve disc 121, so that the two first protrusions 1231 can clamp the two sides of the movable valve disc 121.

[0093] A plurality of second grooves 1222 are provided on the outer wall of the peripheral side of the fixed valve disc 122, and a plurality of second protrusions 1241 are provided on the periphery of one surface of the fixing member 124 to be clamped and connected with the second grooves 1222. The number of the second grooves 1222 and the second protrusions 1241 are both four. The fixed valve disc 122 is clamped with the fixing member 124 from the side where the second protrusions 1241 are provided on the fixing member 124, and the four second grooves 1222 are evenly distributed along the peripheral side of the fixed valve disc 122, so that the clamping and fixing of the second protrusions 1241 of the fixing member 124 to the fixed valve disc 122 is more firmly.

[0094] A plurality of third grooves 1242 with openings on both sides are provided on the periphery of the fixing member 124, and a plurality of snap-fitting members 1251 snap-fittingly connected to the third grooves 1242 are provided on one surface of the fixing sleeve 125. The number of the third grooves 1242 and the snap-fitting members 1251 are both three. The three third grooves 1242 are evenly distributed along the periphery of the fixing member 124, so that the fixing force of the snap-fitting members 1251 on the fixing member 124 is evenly distributed, and the fixing is more stable. The fixing sleeve 125 and the fixing member 124 are snap-fittingly connected to form a relatively sealed accommodating cavity, and the movable valve plate 121, the fixed valve plate 122, and the connecting member 123 are all in the accommodating cavity formed by the fixing sleeve 125 and the fixing member 124.

[0095] In one embodiment, if Figure 3 As shown, the extraction chamber 14 further includes a plurality of suction ports 1243 protruding from the outer surface of the fixing member 124 to increase the space size of the extraction chamber 14 and improve the change in the amount of liquid detergent during one extraction or release of the extraction mechanism body 100.

[0096] like Figure 5 , Figure 6 As shown, the discharge port 1244 is arranged on the side wall of the extraction chamber 14 corresponding to the liquid guiding chamber, the one-way valve for one-way connection between the extraction chamber 14 and the liquid storage chamber is arranged at the port of the suction port 1243, and the one-way valve for one-way liquid flow between the extraction chamber 14 and the liquid guiding chamber is arranged at the port of the discharge port 1244. The one-way valve is opened or closed with the change of the pressure in the extraction chamber 14. That is, the pressure difference between the extraction chamber 14 and the detergent storage chamber and the pressure difference between the two sides of the discharge port 1244 are higher than the set pressure difference of the corresponding one-way valve, and the liquid detergent in the detergent storage chamber will flow into the extraction chamber 14 or the liquid detergent in the extraction chamber 14 will flow out. When the pressure difference on both sides of the one-way valve is lower than the set pressure difference, the one-way valve is closed, and no liquid flows between the two chambers.

[0097] like Figure 2 As shown, a sealing ring 126 is provided at the contact portion between the fixing member 124 and the shell 21 of the feeding box body 200 , and a sealing ring (not shown in the figure) is provided at the contact portion between the fixing member 124 and the fixed valve plate 122 to ensure the sealing of the extraction chamber 14 .

[0098] It should be understood that Figure 5 As shown, the target extraction chamber 14 represents the extraction chamber that is connected to the detergent storage chamber corresponding to the liquid detergent that needs to be automatically added and the liquid guide chamber that needs to automatically add liquid. At this time, the target extraction chamber 14 is connected to the blind hole 1212 through the third through hole 1221, and is finally connected to the first through hole 131. The piston connecting rod 111 reciprocates in the first through hole 131, which will affect the pressure in the target extraction chamber 14. Figure 6 As shown, the two pumping chambers 14 are not connected to the blind hole 1212 , so the reciprocating motion of the piston connecting rod 111 in the first through hole 131 does not affect the pressure in the two pumping chambers 14 .

[0099] Example 2

[0100] like Figure 7 , 8As shown in FIG. 9 , the present invention provides a feeding box for automatically dispensing liquid detergent, including a feeding box body 200, wherein the feeding box body 200 includes a shell 21, a plurality of detergent storage cavities (not shown in the figure) arranged in the shell 21, and a draw-out mechanism body 100 as described above, wherein a side wall of each draw-out cavity 14 of the draw-out mechanism body 100 is unidirectionally connected to a detergent storage cavity.

[0101] In one embodiment, the feeding box body 200 further includes a plurality of liquid guiding cavities (not shown in the figure). The discharge port 1244 of each extraction and discharge cavity 14 is connected to a liquid guiding cavity, and the plurality of extraction and discharge cavities 14 are not cross-connected to the same detergent storage cavity or are not cross-connected to the same liquid guiding cavity. In this embodiment, the number of detergent storage cavities, liquid guiding cavities, and extraction and discharge cavities 14 is three.

[0102] In one embodiment, if Figure 8 , Fig. 9 As shown, a concave cavity 211 is provided on the outer wall of the housing 21, and the valve core assembly 12 is externally disposed in the concave cavity 211. The shape and size of the concave cavity 211 match the outer contour of the valve core assembly 12 disposed in the concave cavity 211. The fixing sleeve 125 of the valve core assembly 12 is fixedly connected in the concave cavity 211. The first drive assembly 15 and the second drive assembly 16 are located outside the housing 21.

[0103] It should be understood that Figure 7 , 8 The shell 21 shown in 9 is only a simple schematic diagram, and the specific structure of the detergent storage chamber and the liquid guiding chamber is not specifically drawn. The detergent storage chamber or the liquid guiding chamber may be included in the shell shown by the mark 21 in the figure, or may be outside the shell shown by the mark 21 in the figure. For those skilled in the art, several improvements or technical feature substitutions may be made without departing from the principle of the present invention, and these improvements or technical feature substitutions are deemed to be within the protection scope of the present invention.

[0104] Example 3

[0105] The present invention provides a washing machine, comprising a washing machine body, and also comprising the above-mentioned feeding box body 200 arranged in the washing machine body. In this embodiment, the number of the detergent storage cavity, the liquid guide cavity, and the extraction cavity 14 are all three.

[0106] Before use, inject corresponding washing supplies, such as laundry detergent, softener, and direction agent, into the three detergent storage chambers respectively.

[0107] When in use, for example, when it is necessary to automatically add laundry detergent, the motor rotates forward, driving the first drive assembly 15 to drive the valve core shaft 13 to drive the movable valve plate 121 to rotate until the blind hole 1212 on the movable valve plate 121 is aligned with the third through hole 1221 on the fixed valve plate 122 which is connected to the target extraction chamber 14 which is unidirectionally connected to the detergent storage chamber for storing the laundry detergent.

[0108] The motor reverses, driving the second drive assembly 16 to drive the piston connecting rod assembly 11 to move in one direction in the first through hole 131, reducing the pressure in the target extraction chamber 14, until the pressure in the detergent storage chamber is higher than the pressure in the target extraction chamber 14, and the pressure difference between the two sides of the one-way valve that one-way connects the target extraction chamber 14 and the detergent storage chamber reaches the pressure difference setting value, and the detergent in the detergent storage chamber storing the laundry liquid enters the target extraction chamber 14. The motor continues to reverse, driving the second drive assembly 16 to drive the piston connecting rod assembly 11 to move in the other direction in the first through hole 131, increasing the pressure in the target extraction chamber 14, until the pressure in the target extraction chamber 14 is higher than the pressure in the liquid guide chamber, and the pressure difference between the two sides of the one-way valve provided on the side of the target extraction chamber 14 corresponding to the liquid detergent chamber to be put in reaches the pressure difference setting value, and the laundry liquid in the target extraction chamber 14 enters the liquid guide chamber corresponding to the laundry liquid. The motor continues to reverse until the amount of laundry detergent in the liquid guide cavity reaches the standard amount for laundry, then the motor stops rotating and the washing machine starts the laundry operation.

[0109] The automatic liquid detergent extraction and dispensing mechanism provided by the present invention can be used for the automatic dispensing of two, three or even more liquid detergents. In a preferred embodiment, the worm gear transmission or bevel gear transmission cooperates with a pair of meshing gears, so that the two operations of selecting the target extraction and dispensing chamber and extraction and dispensing can be completed by the forward or reverse rotation of a motor 151, and the motor, worm gear or a pair of bevel gears, driving gear and driven gear, and piston connecting rod assembly are all arranged along the axial direction of the extraction and dispensing chamber, and the arrangement is compact and exquisite, and only a certain assembly space is required in the horizontal direction of the washing machine, and the longitudinal space of the washing machine is not occupied, and the installation of other structures in the washing machine is not affected. That is, the structure is simple and the space is small, and it is suitable for equipment that needs to extract and discharge liquid detergents in various fields. In addition, by controlling the shape and size of the convex rod, the long hole, the first through hole, the second through hole, the blind hole, the third through hole, and the extraction and dispensing chamber, the amount of liquid detergent automatically dispensed can be accurately controlled.

[0110] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown here.

Claims

1. A pumping mechanism for automatically dispensing liquid detergent, comprising a pumping mechanism body (100) disposed in a feeding box body (200), characterized in that: The pumping mechanism body (100) comprises a piston connecting rod assembly (11), a valve core assembly (12), a first drive assembly (15), and a second drive assembly (16); wherein: One end of the valve core assembly (12) is connected to the valve core rotating shaft (13), and the other end is connected to a plurality of sealed extraction chambers (14); one side wall of the extraction chamber (14) is in one-way communication with a detergent storage chamber of the feeding box body (200), and the other side wall is provided with a one-way discharge port (1244); a first through hole (131) is axially provided on the valve core rotating shaft (13), and one end of the piston connecting rod assembly (11) is movably arranged in the first through hole (131); The first drive assembly (15) drives the valve core shaft (13) to rotate until the first through hole (131) is selectively connected to the pumping chamber (14) of the target, and the second drive assembly (16) drives one end of the piston connecting rod assembly (11) to axially reciprocate in the first through hole (131), thereby changing the pressure in the pumping chamber (14) of the target, so that the detergent in the detergent storage chamber unidirectionally connected to the pumping chamber (14) of the target flows into the pumping chamber (14) of the target, or the detergent in the pumping chamber (14) of the target flows out from the discharge port (1244), thereby realizing the pumping or discharging of the detergent; The piston connecting rod assembly (11) comprises a piston connecting rod (111) and a piston head (112); the piston head (112) fits into the first through hole (131) so that a sealed space is formed between the target extraction chamber (14) connected to the first through hole (131) and the outer wall of the piston head (112); one end of the piston connecting rod (111) is connected to the piston head (112), and the other end is connected to the second driving assembly (16); at least two circles of piston rubber rings (113) are provided around the piston head (112) for improving sealing performance; The first driving assembly (15) comprises a motor (151) having a motor shaft (152) at one end, a driving gear (153) coaxially arranged on the motor shaft (152), and a driven gear (154) meshing with the driving gear (153); the motor (151) rotates to drive the motor shaft (152) to drive the driving gear (153) and the driven gear (154) to rotate, so that the valve core shaft (13) rotates until the first through hole (131) is connected to the target extraction chamber (14); The second driving assembly (16) comprises a rotating assembly, a rotating member, and a protruding rod (161) eccentrically arranged on a surface of the rotating member; one end of the piston connecting rod (111) is provided with a long hole (1111); one end of the protruding rod (161) is movably arranged in the long hole (1111); the rotating assembly drives the rotating member to rotate, so that the protruding rod (161) performs a circular motion and reciprocates in the long hole (1111), thereby guiding the piston connecting rod assembly (11) to reciprocate in the first through hole (131); The rotating assembly comprises a worm (162) sleeved on the circumference of the motor shaft (152), and a worm wheel (163) meshing with the worm (162); the driving gear (153) and the worm wheel (163) are respectively provided with a ratchet (17), and the two ratchet wheels (17) rotate in opposite directions; the rotating member is a first ratchet (171) provided on the worm wheel (163); wherein, The motor (151) rotates to drive the motor shaft (152) to drive the worm (162) to rotate, which in turn drives the worm wheel (163) to rotate, so that the protruding rod (161) reciprocates in the long hole (1111).

2. The extraction mechanism for automatically dispensing liquid detergent according to claim 1, characterized in that: During the reciprocating motion of the piston-connecting rod assembly (11), the long hole (1111) always covers the circular motion footprint of the protruding rod (161), so that the second driving assembly (16) only applies a force along the axial direction of the first through hole (131) to the piston-connecting rod assembly (11).

3. The extraction mechanism for automatically dispensing liquid detergent according to claim 1, characterized in that: The length direction of the long hole (1111) is perpendicular to the reciprocating motion direction of the piston connecting rod assembly (11).

4. The extraction mechanism for automatically dispensing liquid detergent according to claim 1, characterized in that: The reciprocating direction of the piston connecting rod (111) is parallel to the rotation axis of the motor shaft.

5. The extraction mechanism for automatically dispensing liquid detergent according to claim 1, characterized in that: The valve core assembly (12) comprises a movable valve plate (121) connected to the valve core rotating shaft (13), and a fixed valve plate (122) in contact with the other side of the movable valve plate (121) relative to the valve core rotating shaft (13); the movable valve plate (121) is provided with a second through hole (1211) connected to the first through hole (131), and a blind hole (1212) connected to the second through hole (1211); the fixed valve plate (122) is provided with a plurality of third through holes (1221), and the plurality of third through holes (1221) are respectively connected to one of the pumping and discharging chambers (14); wherein: The valve core rotating shaft (13) rotates to drive the movable valve plate (121) to rotate relative to the fixed valve plate (122), until the blind hole (1212) is connected to the third through hole (1221) connected to the target extraction chamber (14), so that the first through hole (131) is connected to the target extraction chamber (14).

6. The extraction mechanism for automatically dispensing liquid detergent according to claim 5, characterized in that: The number of the blind holes (1212) is two, and as the movable valve plate (121) rotates, the two blind holes (1212) on the movable valve plate (121) can be connected to the two third through holes (1221) at the same time.

7. The extraction mechanism for automatically dispensing liquid detergent according to claim 5, characterized in that: The number of the blind hole (1212) is one, and as the movable valve plate (121) rotates, the movement path of the blind hole (1212) on the movable valve plate (121) sequentially covers a plurality of third through holes (1221).

8. The extraction mechanism for automatically dispensing liquid detergent according to claim 6 or 7, characterized in that: The valve core assembly (12) further comprises a connecting member (123), one side of the connecting member (123) being connected to one end of the valve core rotating shaft (13), and the other side of the connecting member (123) being snap-connected to the movable valve plate (121), and the connecting member (123) being provided with a fourth through hole (1232) connected to the first through hole (131).

9. The extraction mechanism for automatically dispensing liquid detergent according to claim 8, characterized in that: The valve core assembly (12) further comprises a fixing member (124) having one side in contact with the fixed valve plate (122), wherein the fixing member (124) is provided with a plurality of extraction and discharge chambers (14) respectively connected to the plurality of third through holes (1221).

10. The extraction mechanism for automatically dispensing liquid detergent according to claim 9, characterized in that: A one-way valve is provided at the one-way connection between the extraction chamber (14) and a liquid storage chamber of the feeding box body (200), and at the discharge port (1244), respectively. The one-way valve opens or closes as the pressure in the extraction chamber (14) changes.

11. The extraction mechanism for automatically dispensing liquid detergent according to claim 9, characterized in that: The valve core assembly (12) further comprises a fixing sleeve (125) fixedly connected to the housing (21) of the feeding box body (200), and presents a hollow structure with one side open; one end of the valve core rotating shaft (13) rotates and penetrates through a side wall of the fixing sleeve (125); the connecting member (123) and the movable valve plate (121) are respectively rotatably arranged in the fixing sleeve (125); and the fixing member (124) is fixedly connected to one side of the fixing sleeve (125).

12. The extraction mechanism for automatically dispensing liquid detergent according to any one of claims 9 to 11, characterized in that: A plurality of first grooves (1213) are provided on the peripheral outer wall of the movable valve plate (121), and a plurality of first protrusions (1231) which are snap-connected to the first grooves (1213) are provided on the periphery of a surface of the connecting member (123).

13. The extraction mechanism for automatically dispensing liquid detergent according to any one of claims 9 to 11, characterized in that: A plurality of second grooves (1222) are provided on the peripheral outer wall of the fixed valve plate (122), and a plurality of second protrusions (1241) which are snap-connected to the second grooves (1222) are provided on the periphery of a surface of the fixing member (124).

14. The extraction mechanism for automatically dispensing liquid detergent according to claim 11, characterized in that: A plurality of third grooves (1242) with openings on both sides are provided on the peripheral side of the fixing member (124), and a plurality of buckling members (1251) buckledly connected to the third grooves (1242) are provided on one surface of the fixing sleeve (125).

15. The extraction mechanism for automatically dispensing liquid detergent according to any one of claims 9 to 11, characterized in that: The pumping chamber (14) further comprises a plurality of suction ports (1243) protruding from the outer surface of the fixing member (124), and a one-way valve for one-way communication between the pumping chamber (14) and the liquid storage chamber is arranged at the port of the suction port (1243).

16. The extraction mechanism for automatically dispensing liquid detergent according to claim 11, characterized in that: Sealing rings are provided at the contact portion between the fixing member (124) and the housing (21), and at the contact portion between the fixing member (124) and the fixed valve plate (122).

17. A pumping mechanism for automatically dispensing liquid detergent, comprising a pumping mechanism body (100) disposed in a feeding box body (200), characterized in that: The pumping mechanism body (100) comprises a piston connecting rod assembly (11), a valve core assembly (12), a first drive assembly (15), and a second drive assembly (16); wherein: One end of the valve core assembly (12) is connected to the valve core rotating shaft (13), and the other end is connected to a plurality of sealed extraction chambers (14); one side wall of the extraction chamber (14) is in one-way communication with a detergent storage chamber of the feeding box body (200), and the other side wall is provided with a one-way discharge port (1244); a first through hole (131) is axially provided on the valve core rotating shaft (13), and one end of the piston connecting rod assembly (11) is movably arranged in the first through hole (131); The first drive assembly (15) drives the valve core shaft (13) to rotate until the first through hole (131) is selectively connected to the pumping chamber (14) of the target, and the second drive assembly (16) drives one end of the piston connecting rod assembly (11) to axially reciprocate in the first through hole (131), thereby changing the pressure in the pumping chamber (14) of the target, so that the detergent in the detergent storage chamber unidirectionally connected to the pumping chamber (14) of the target flows into the pumping chamber (14) of the target, or the detergent in the pumping chamber (14) of the target flows out from the discharge port (1244), thereby realizing the pumping or discharging of the detergent; The piston connecting rod assembly (11) comprises a piston connecting rod (111) and a piston head (112); the piston head (112) fits into the first through hole (131) so that a sealed space is formed between the target extraction chamber (14) connected to the first through hole (131) and the outer wall of the piston head (112); one end of the piston connecting rod (111) is connected to the piston head (112), and the other end is connected to the second driving assembly (16); at least two circles of piston rubber rings (113) are provided around the piston head (112) for improving sealing performance; The first driving assembly (15) comprises a motor (151) having a motor shaft (152) at one end, a driving gear (153) coaxially arranged on the motor shaft (152), and a driven gear (154) meshing with the driving gear (153); the motor (151) rotates to drive the motor shaft (152) to drive the driving gear (153) and the driven gear (154) to rotate, so that the valve core shaft (13) rotates until the first through hole (131) is connected to the target extraction chamber (14); The second driving assembly (16) comprises a rotating assembly, a rotating member, and a protruding rod (161) eccentrically arranged on a surface of the rotating member; one end of the piston connecting rod (111) is provided with a long hole (1111); one end of the protruding rod (161) is movably arranged in the long hole (1111); the rotating assembly drives the rotating member to rotate, so that the protruding rod (161) performs a circular motion and reciprocates in the long hole (1111), thereby guiding the piston connecting rod assembly (11) to reciprocate in the first through hole (131); The rotating assembly comprises a bevel gear, the bevel gear comprises a driving bevel gear sleeved on the circumference of the motor shaft (152), and a driven bevel gear meshing with the driving bevel gear, the driving gear (153) and the driven bevel gear are respectively provided with a ratchet, and the two ratchet wheels rotate in opposite directions; the rotating member is a ratchet arranged on the driven bevel gear.

18. A feeding box for automatically feeding liquid detergent, comprising a feeding box body (200), characterized in that: The feeding box body (200) comprises a shell (21), a plurality of detergent storage chambers arranged in the shell (21), and a draw-out mechanism for automatically dispensing liquid detergent according to claim 1 or 17; a side wall of each draw-out chamber (14) of the draw-out mechanism body (100) is in one-way communication with a detergent storage chamber.

19. The automatic liquid detergent dispensing box according to claim 18, characterized in that: It also comprises a plurality of liquid guiding cavities, wherein the discharge port (1244) of each extraction and discharge cavity (14) is in communication with a liquid guiding cavity, and the plurality of extraction and discharge cavities (14) are not cross-connected to the same detergent storage cavity or are not cross-connected to the same liquid guiding cavity.

20. The automatic liquid detergent dispensing box according to claim 18, characterized in that: A concave cavity (211) is provided on the outer wall of the housing (21), and the valve core assembly (12) is disposed outside the concave cavity (211).

21. A washing machine, comprising a washing machine body, characterized in that: It also includes a feeding box for automatically dispensing liquid detergent as described in claim 18 or 19, which is arranged in the washing machine body.

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