CN114197173B - Automatic throwing device and washing machine - Google Patents

Abstract

The invention belongs to the technical field of washing machines, and particularly discloses an automatic throwing device and a washing machine. The automatic throwing device comprises a distribution box, wherein the distribution box is provided with at least one liquid storage cavity, the bottom of the side wall at one end of the distribution box is provided with a liquid outlet, and the liquid outlet is communicated with the liquid storage cavity; a pumping unit disposed at one end of the dispensing cartridge, the pumping unit including a pipette disposed at a bottom thereof; and when the distribution box is matched with the pumping unit in place, the unsealing assembly is far away from the liquid outlet, and the liquid suction pipe is sealed to extend into the liquid storage cavity to be communicated with the liquid storage cavity. The washing machine comprises the automatic throwing device. The automatic throwing device and the washing machine provided by the invention simplify the structure of the automatic throwing device and reduce the cost of the automatic throwing device and the washing machine.

Description

Automatic throwing device and washing machine

Technical Field

The invention relates to the technical field of washing machines, in particular to an automatic throwing device and a washing machine.

Background

With the increasing level of living of people, washing machines have become one of the necessary home appliances for home life. According to the rotation mode, the washing machine is divided into a drum washing machine and a pulsator washing machine, and the drum washing machine and the full-automatic pulsator washing machine are generally provided with an automatic feeding device for feeding the detergent into the washing barrel so that various detergents such as externally added laundry detergent, softener and the like are washed into the washing barrel by inflow water to realize clean washing of clothes.

The prior art provides an automatic throwing system for a washing machine, which comprises a drawer assembly, a shell and a drawing assembly, wherein the drawer assembly is freely drawably inserted into the shell and the drawing assembly through clamping grooves. The drawer assembly comprises a drawer cavity piece, the drawer cavity piece consists of two non-communicated cavities, and the bottom of the tail end of each cavity is provided with a first one-way valve group and a second one-way valve group. The rear end of the shell in the shell and the extraction assembly is provided with a first peristaltic piston pump and a second peristaltic piston pump, an inlet mouth of the first peristaltic piston pump is connected with a first extraction connecting piece, an inlet mouth of the second peristaltic piston pump is connected with a second extraction connecting piece, and the first extraction connecting piece and the second extraction connecting piece are respectively communicated with the two drawer cavities through a first check valve group and a second check valve group.

The automatic throwing system for the washing machine provided by the prior art is characterized in that an extraction connecting piece is required to be arranged at each peristaltic piston pump, a one-way valve group is required to be arranged in each drawer cavity of the drawer assembly, the connection between the corresponding piston pump and the drawer cavity is realized through the connection between the extraction connecting piece and the one-way valve group, the structure is complex, the cost is high, the size of the automatic throwing system is increased due to the arrangement of the one-way valve group and the extraction connecting piece, and the integration and the miniaturization design of the automatic throwing system are not facilitated.

Disclosure of Invention

An object of the present invention is to provide an automatic dispensing device, which simplifies the structure of the automatic dispensing device, reduces the cost of the automatic dispensing device, and reduces the volume of the automatic dispensing device.

Another object of the present invention is to provide a washing machine, which simplifies the structure of the washing machine and reduces the cost of the washing machine.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

an automatic delivery device, comprising:

the distribution box is provided with at least one liquid storage cavity, the bottom of the side wall at one end of the distribution box is provided with a liquid outlet, and the liquid outlet is communicated with the liquid storage cavity;

a pumping unit disposed at one end of the dispensing cartridge, the pumping unit including a pipette disposed at a bottom thereof;

And when the distribution box is matched with the pumping unit in place, the unsealing assembly is far away from the liquid outlet, and the liquid suction pipe stretches into the liquid storage cavity to be communicated with the liquid storage cavity.

Further, the unsealing assembly comprises:

a tamper evident element capable of selectively sealing the liquid outlet;

and one end of the first elastic resetting piece is connected with one end of the unsealing piece, which is far away from the pumping unit, and the other end of the first elastic resetting piece is connected with the distribution box.

Further, the dispensing box is provided with a liquid outlet pipe outwards protruding from the liquid outlet, and the unsealing piece can be inserted into the liquid outlet pipe and is in sealing connection with the liquid outlet pipe.

Further, the unsealing piece comprises a sealing portion and a guiding portion, the sealing portion and the guiding portion are axially arranged along the liquid outlet pipe, one end of the sealing portion is connected with the guiding portion, the other end of the sealing portion is connected with the first elastic resetting piece, the outer diameter of the sealing portion is equal to the inner diameter of the liquid outlet pipe, and the outer diameter of the guiding portion is gradually reduced along a direction away from the sealing portion.

Further, a clamping hook is arranged at one end of the sealing part far away from the guiding part in a radially outward protruding manner.

Further, the unsealing assembly further comprises:

the guide column is arranged in the liquid storage cavity along the axial direction of the liquid suction pipe, and a guide hole with an opening facing the pumping unit is formed in the guide column;

one end of the guide rod is connected with the unsealing piece, the other end of the guide rod is inserted into the guide hole, and the guide rod is in sliding connection with the hole wall of the guide hole.

Further, the liquid suction pipe comprises a liquid suction part positioned at the tail end, the tail end of the liquid suction part is closed, and a liquid suction port communicated with the liquid suction pipe cavity is formed in the side wall of the liquid suction part;

the liquid suction device comprises a liquid suction part, and is characterized in that a first sealing groove is formed in the peripheral wall of the liquid suction part, a first sealing piece is arranged in the first sealing groove and is positioned on one side, away from the unsealing piece, of the liquid suction opening, and the first sealing piece is used for sealing the outer wall of the liquid suction pipe with the inner wall of the liquid outlet pipe.

Further, the pumping unit further includes:

a housing having a receiving cavity, the pipette extending outside the housing, and the pipette communicating with the receiving cavity;

One end of the connecting sleeve is sleeved on the liquid suction pipe and can be in sliding sealing connection with the liquid suction part, and the other end of the connecting sleeve can be in abutting connection with the end face of the liquid outlet pipe;

one end of the second elastic resetting piece is connected with the connecting sleeve, and the other end of the second elastic resetting piece is connected with the shell;

be provided with the second seal groove on the imbibition portion, be provided with the second sealing member in the second seal groove, the second sealing member is located the imbibition mouth orientation one side of unsealing piece, when the distribution box with the pumping unit separates, the adapter sleeve with the imbibition portion passes through first sealing member with second sealing member sealing connection.

Further, the connecting sleeve comprises:

a first connection portion having an inner diameter equal to an outer diameter of the liquid suction portion;

the second connecting part is connected with one end, far away from the shell, of the first connecting part, and the outer diameter of the second connecting part is larger than or equal to the outer diameter of the liquid outlet pipe.

A washing machine comprising an automatic delivery device as described above.

The invention has the beneficial effects that:

according to the automatic throwing device, the liquid outlet is formed in the bottom of the side wall of one side of the distribution box, the unsealing component is arranged at the liquid outlet, the liquid suction pipe is arranged on the pumping unit, when the distribution box and the pumping unit are matched to the position, the liquid suction pipe directly acts on the unsealing component to push the unsealing component to be away from the liquid outlet, so that the conduction between the liquid suction pipe and the liquid storage cavity is realized, a separate one-way valve is not required to be arranged on the distribution box to control the communication between the pumping unit and the liquid storage cavity, the structure is simplified, and the cost is reduced; meanwhile, as the liquid suction pipe directly stretches into the liquid storage cavity to suck liquid, the pipeline design of the automatic throwing device is simplified, the structure of the automatic throwing device is further simplified, the cost of the automatic throwing device is reduced, and the size of the automatic throwing device is reduced; furthermore, because the liquid outlet is communicated with the bottom of the liquid storage cavity, after the pumping unit is communicated with the liquid storage cavity, the wash auxiliary in the liquid storage cavity automatically flows into the pumping unit through the liquid suction pipe, so that the pumping pressure required by the pumping unit is reduced, and the cost of the automatic throwing device is further reduced.

The washing machine provided by the invention can simplify the structure of the washing machine and reduce the cost of the washing machine.

Drawings

Fig. 1 is a schematic structural view of an automatic delivery device according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a split structure of an automatic delivery device according to an embodiment of the present invention;

FIG. 3 is a top view of a cartridge according to an embodiment of the present invention with a pumping unit disconnected;

FIG. 4 is an enlarged view of a portion of FIG. 3 at I;

FIG. 5 is a top view of a dispensing cartridge and pumping unit provided in accordance with an embodiment of the present invention in place;

FIG. 6 is an enlarged view of a portion of J in FIG. 5;

FIG. 7 is a cross-sectional view taken along the direction A-A in FIG. 5;

FIG. 8 is an enlarged view of a portion of FIG. 7 at K;

fig. 9 is a sectional view taken along the direction B-B in fig. 5.

The figures are labeled as follows:

1-a throwing box; 11-putting the box body; 111-a delivery port; 112-putting the accommodating cavity; 113-a drawing port; 12-putting a cover body; 121-an upper cover; 122-lower cover; 123-putting channel; 124-a throwing spray tank; 125-water inlet; 126-pumping inlet;

a 2-dispenser; 21-a distribution box; 211-a liquid storage cavity; 212-a communication groove; 213-a liquid outlet; 214-a liquid outlet pipe; 215-conducting slots; 216-clamping the boss; 22-dispensing cap; 221-adding a cover; 222-viewing a cover; 23-unsealing the assembly; 231-a first resilient return member; 232-unsealing; 2321-a seal; 2322-guides; 2323-hooks; 233-a guide bar; 234-guide posts; 235-a third seal;

A 3-pumping unit; 31-a housing; 311-shell body; 3111-accommodation chamber; 312-cover plate; a 32-pipette; 321-a liquid suction part; 3211-a liquid suction port; 322-first seal; 323-a second seal; 33-connecting sleeve; 331-first connection portion; 332-a second connection; 34-a second elastic restoring member; 35-a drive unit; 36-pump column; 361-pump column cavity; 362-guide slots; 37-piston column; 371-piston column chamber; 38-a piston; 39-drain; 391-check valve; 310-imbibition one-way valve; 320-a liquid discharge one-way valve; 330-sliding seal; 340-connecting plates; 3401-elongated holes; 350-a liquid level detection device.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Fig. 1 is a schematic structural diagram of an automatic dispensing device according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a split structure of an automatic dispensing device according to an embodiment of the present invention, as shown in fig. 1 and 2, the present embodiment provides an automatic dispensing device, which is mainly applied to a full-automatic washing machine, and automatically dispenses washing aids such as a detergent, a softener, etc. into a washing tub of the washing machine, so as to improve a washing effect of the washing machine.

The automatic throwing device provided by the embodiment is a drawing type automatic throwing device, not only can be applied to a full-automatic pulsator washing machine, but also can be applied to a drum washing machine, the setting of the drawing type automatic throwing device on the drum washing machine or the pulsator washing machine is a conventional technical means in the field, the specific setting position and the connection relation of the automatic throwing device on the washing machine are not repeated, and only the self structure of the automatic throwing device is described in detail.

Specifically, the automatic delivery device provided in this embodiment includes: a delivery box 1 mounted on a shell 31 of the washing machine, wherein a box bottom of the delivery box 1 is arranged at a delivery port 111 for delivering washing auxiliary agents such as detergent, softener and the like into a washing machine barrel of the washing machine from the delivery port 111, and one end of the delivery box 1 is provided with a drawing port 113; a dispenser 2 including a dispensing box 21, the dispenser 2 being drawably provided inside the dispensing box 1 through a drawing port 113 to achieve the assembly of the dispensing box 1 and the dispensing box 21 in place and the addition of a wash aid to the dispensing box 21, the dispensing box 21 being provided with at least one liquid storage chamber 211 for storing wash aids such as a detergent or a softener; and a pumping unit 3 connected to the other end of the delivery box 1 for pumping the wash aid in the liquid storage chamber 211 into the delivery box 1, so that the wash aid can be delivered into the washing tub of the washing machine through the delivery port 111.

In this embodiment, the dispensing box 1 includes a dispensing box body 11 with an opening at the upper end and a dispensing cover body 12 provided at the opening at the upper end of the dispensing box body 11. The throwing box body 11 and the throwing cover body 12 are connected in a detachable mode such as threaded connection and clamping connection, so that the automatic throwing device is beneficial to processing and mounting and dismounting of the automatic throwing device on the washing machine shell 31.

The dispensing box 11 has a dispensing chamber 112 which is capable of receiving the dispensing box 21 on the one hand and on the other hand the wash aid or the wash liquor after mixing the wash aid with water. The bottom of the throwing box body 11 is provided with a throwing opening 111, and the bottom of the throwing box body 11 presents a funnel-shaped structure with low throwing opening 111 and high periphery, so that the washing auxiliary agent or washing liquid can smoothly flow into the throwing opening 111 from the inside of the throwing box body 11.

Preferably, the dispensing box 11 is further provided with a vent hole for maintaining pressure balance between the interior of the automatic dispensing device and the interior of the washing tub, so as to ensure that the wash aid smoothly flows into the dispensing opening 111.

The delivery cover 12 is provided with a delivery channel 123, one end of the delivery channel 123 is communicated with the liquid storage cavity 211 through the pumping unit 3, and the other end is communicated with the delivery accommodating cavity 112 of the delivery box 11. For the convenience of offering of putting in the passageway 123, preferably, in this embodiment, put in lid 12 and put in the groove including the last lid 121 and the last lid 121 that the lock is connected, offer down on the lower lid 122 and put in the groove down, go up lid 121 and correspond down and put in the groove and be provided with and put in the groove, when last lid 121 and lower lid 122 lock are connected, go up the cell wall terminal surface of putting in the groove and put in the cell wall terminal surface of groove down and closely laminate and form upper and lower confined passageway 123 of putting in, when conveniently putting in the passageway 123 and offering, avoid the wash aid to get into and put in the outside region of passageway 123, guarantee the cleanliness of automatic device of putting in.

Preferably, the delivery channel 123 is curved, so that the wash aid is prevented from flowing too fast in the delivery channel 123 due to the fact that the delivery pump pumps too high pressure, and is prevented from splashing out of the delivery channel 123, pollution of an automatic delivery device is caused, and smoothness and stability of delivery of the wash aid are guaranteed.

Further, one end of the delivery channel 123 is provided with a pumping inlet 126 communicating with the pumping unit 3, and the delivery channel 123 is provided with a water inlet 125 at the front end of the pumping inlet 126, the water inlet 125 communicating with an external water source. The external water source inputs water into the putting channel 123 through the water inlet 125, so that on one hand, the wash aid and the water are mixed in the putting channel 123, and the acting area of the wash aid in the washing barrel is increased; on the other hand, the wash aid in the delivery channel 123 is flushed, so that the wash aid in the delivery channel 123 is ensured to smoothly enter the delivery accommodating cavity 112.

The end of the delivery channel 123 remote from the pumping inlet 126 is provided with a delivery aperture for communication with the delivery receiving chamber 112. Preferably, the end of the delivery channel 123 remote from the pumping inlet 126 is provided with a delivery spray slot 124, the slot width of the delivery spray slot 124 being greater than the width of the delivery channel 123. A plurality of small throwing holes are formed in the bottom of the throwing spray groove 124 for realizing the spray throwing of the washing liquid.

In this embodiment, a drawing port 113 is provided on a side of the dispensing cartridge 11 away from the dispensing pump, and the dispenser 2 is drawably disposed in the dispensing accommodation chamber 112 of the dispensing cartridge 11 through the drawing port 113.

The dispenser 2 is used to effect the addition of wash aid in an automatic dispensing device and the dispensing of wash aid of different types. In the present embodiment, the dispenser 2 includes a dispensing box 21 having an upper end opening, and a dispensing cover 22 provided to cover the upper end opening of the dispensing box 21. The dispensing box 21 and the dispensing cap 22 are detachably connected by a clamping connection or a threaded connection, so that the processing of the dispenser 2 is facilitated, and the cleaning of the dispensing box 21 is facilitated.

In this embodiment, the dispensing box 21 is provided with two liquid storage cavities 211 with upward openings and separated from each other, so that the automatic dispensing device can achieve the dispensing of two different types of wash aids, such as detergents, softeners, and the like. And preferably, the partition between the two liquid storage chambers 211 is arranged along the drawing direction of the distribution box 21, so that the two liquid storage chambers 211 are arranged side by side along the drawing direction perpendicular to the distribution box 21, and the pumping unit 3 can be directly communicated with each liquid storage chamber 211, and the arrangement of an intermediate pipeline is reduced. In other embodiments, the number of the liquid storage cavities 211 may be three or more, and the size of each liquid storage cavity 211 may be specifically set according to the required amount of different wash aids, which is not described in detail in this embodiment.

Fig. 3 is a plan view of the dispensing cartridge 21 and the pumping unit 3 according to the embodiment of the present invention when not connected, fig. 4 is a partially enlarged view of the portion I in fig. 3, fig. 5 is a plan view of the dispensing cartridge 21 and the pumping unit 3 according to the embodiment of the present invention when assembled in place, fig. 6 is a partially enlarged view of the portion J in fig. 5, fig. 7 is a sectional view taken along the direction A-A in fig. 5, and fig. 8 is a partially enlarged view of the portion K in fig. 7. As shown in fig. 3 to 8, in this embodiment, a liquid outlet 213 is disposed at the bottom of the side wall of the dispensing box 21 facing the pumping unit 3, the liquid outlet 213 is communicated with the liquid storage cavity 211, and a unsealing assembly 23 is disposed at the liquid outlet 213 to open or close the liquid outlet 213. The pumping unit 3 comprises a liquid suction pipe 32, when the distribution box 21 is separated from the pumping unit 3, the unsealing component 23 seals the liquid outlet 213, and when the distribution box 21 is matched with the pumping unit 3 in place, the liquid suction pipe 32 pushes the unsealing component 23 to enable the unsealing component 23 to be far away from the liquid outlet 213, so that the liquid suction pipe 32 can extend into the liquid storage cavity 211 through the liquid outlet 213, and the conduction between the pumping unit 3 and the liquid storage cavity 211 is realized.

By arranging the liquid outlet 213 at the bottom of one side wall of the distribution box 21, arranging the unsealing component 23 at the liquid outlet 213, arranging the liquid suction pipe 32 on the pumping unit 3, when the distribution box 21 is matched with the pumping unit 3 in place, the liquid suction pipe 32 directly acts on the unsealing component 23 to push the unsealing component 23 to be far away from the liquid outlet 213, so that the conduction between the liquid suction pipe 32 and the liquid storage cavity 211 is realized, and a separate one-way valve is not required to be arranged on the distribution box 21 to control the communication between the pumping unit 3 and the liquid storage cavity 211, thereby simplifying the structure and reducing the cost; meanwhile, as the liquid suction pipe 32 directly stretches into the liquid storage cavity 211 to suck liquid, the pipeline design of the automatic throwing device is simplified, the structure of the automatic throwing device is further simplified, the cost of the automatic throwing device is reduced, and the size of the automatic throwing device is reduced; furthermore, since the liquid outlet 213 is communicated with the bottom of the liquid storage cavity 211, after the pumping unit 3 is communicated with the liquid storage cavity 211, the wash aid in the liquid storage cavity 211 automatically flows into the pumping unit 3 through the liquid suction pipe 32, so that the pumping pressure required by the pumping unit 3 is reduced, and the cost of the automatic throwing device is further reduced.

Preferably, the dispensing box 21 extends outward from the outlet 213 and has a liquid outlet 214, and the unsealing component 23 is slidably connected to the liquid outlet 214 and can be hermetically connected to the liquid outlet 214. The arrangement of the liquid outlet pipe 214 is beneficial to the arrangement of the unsealing assembly 23 on one hand, and ensures the sealing performance of the liquid outlet 213 when the distribution box 21 is separated from the pumping unit 3; on the other hand, when the liquid suction pipe 32 stretches into the liquid storage cavity 211 to suck liquid, the sealing between the liquid suction pipe 32 and the distribution box 21 can be better realized, and washing auxiliary liquid is prevented from leaking from the liquid suction port 3211 in the process of matching the distribution box 21 with the pumping unit 3 for sucking liquid.

In this embodiment, the unsealing assembly 23 includes a unsealing member 232 and a first elastic restoring member 231, the unsealing member 232 is disposed at the liquid outlet 213, the first elastic restoring member 231 is disposed along the length direction of the liquid outlet 214, one end of the first elastic restoring member 231 is connected with one end of the unsealing member 232 far away from the pumping unit 3, and the other end of the first elastic restoring member 231 is fixedly connected with the dispensing box 21. When the dispensing cartridge 21 is separated from the pumping unit 3, the unsealing member 232 is inserted into the liquid outlet pipe 214 and closes the liquid outlet 213; when the dispensing cartridge 21 is matched with the pumping unit 3, the tail end of the liquid suction pipe 32 is abutted against one end of the unsealing piece 232 far away from the first elastic reset piece 231, and the unsealing piece 232 is pushed to move towards the inside of the liquid storage cavity 211, so that the unsealing piece 232 is slid out of the liquid outlet pipe 214, the liquid suction pipe 32 is inserted into the liquid outlet pipe 214 and extends into the liquid storage cavity 211 to suck liquid, and when the liquid suction pipe 32 is abutted against the unsealing piece 232, the first elastic reset piece 231 is compressed; when the pumping unit 3 is disengaged from the dispensing cartridge 21, the unsealing member 232 is pushed into the liquid outlet tube 214 by the elastic force of the first elastic restoring member 231, sealing the liquid outlet tube 214. The structure of the unsealing component 23 is simple in structure and convenient to operate, the structure of the automatic throwing device is further simplified, and the cost of the automatic throwing device is reduced.

Preferably, in the present embodiment, the tangential plane of the lowest part of the cavity of the drain pipe 214 is located below the cavity bottom of the liquid storage cavity 211, so that the drain pipe 214 can be sufficiently communicated with the cavity bottom of the liquid storage cavity 211, and the wash aid in the liquid storage cavity 211 can flow into the pumping unit 3 through the liquid outlet 213 even if a small amount of wash aid exists in the liquid storage cavity 211.

In this embodiment, the bottom of the liquid storage cavity 211 is provided with a concave conducting groove 215, the groove wall of the conducting groove 215 is of an arc structure matched with the inner wall of the liquid outlet pipe 214, and the groove wall of the conducting groove 215 and the inner wall of the liquid outlet pipe 214 are located on the same cylindrical surface. The provision of the through-channel 215 enables, on the one hand, a better communication between the outlet pipe 214 and the reservoir 211 and, on the other hand, a reduced sliding obstruction of the unsealing element 232, providing a guide for the movement of the unsealing element 232.

Further, in the present embodiment, one end of the first elastic restoring member 231 is connected to the unsealing member 232, and the other end is connected to a side wall of the conducting groove 215 away from the liquid outlet 213, which is beneficial to simplifying the internal structure of the dispensing box 21. In other embodiments, the bottom of the liquid storage cavity 211 may also be provided with a pillar or block structure for connecting the first elastic restoring member 231 to connect the first elastic restoring member 231 to the dispensing box 21.

In the present embodiment, the opener 232 preferably includes a sealing portion 2321 and a guiding portion 2322 disposed along the axial direction of the liquid outlet tube 214, and the guiding portion 2322 is connected to an end of the sealing portion 2321 facing the pumping unit 3. And further, the sealing portion 2321 has a cylindrical structure, and an outer diameter thereof is equal to an inner diameter of the liquid outlet pipe 214, so as to realize sealing connection between the sealing portion 2321 and the liquid outlet pipe 214. An annular third sealing groove is formed in the outer peripheral surface of the sealing portion 2321, and a third sealing member 235 is arranged in the third sealing groove and is used for being in sliding sealing connection with the inner wall of the liquid outlet pipe 214.

The guide portion 2322 is of a truncated cone-shaped structure, and a large end of the guide portion 2322 is connected with the sealing portion 2321, and an outer diameter of the guide portion 2322 gradually decreases along a direction away from the sealing portion 2321. The setting of guide 2322 can reduce the sliding resistance between unsealing piece 232 and drain pipe 214 on the basis of guaranteeing sealed connection of unsealing piece 232 and drain pipe 214, and can provide the direction for unsealing piece 232 entering drain pipe 214. In other embodiments, the unsealing member 232 may include only the sealing portion 2321. In other embodiments, the sealing portion 2321 may be other than a cylindrical structure, and/or the guiding portion 2322 may be other than a truncated cone structure, so long as a sliding seal between the sealing portion 2321 and the inner wall of the liquid outlet tube 214 is achieved, and/or the cross-sectional area of the guiding portion 2322 is made smaller than the cavity cross-sectional area of the liquid outlet tube 214.

In this embodiment, in order to further improve the movement reliability of the opener 232, it is preferable that the end of the sealing portion 2321 remote from the guiding portion 2322 is connected with the guiding lever 233. The cavity of the liquid storage cavity 211 is provided with a guide post 234, the guide post 234 is arranged along the axial direction of the liquid outlet pipe 214, the guide post 234 is provided with a guide hole with an opening facing the unsealing piece 232, and one end of the guide rod 233, which is not connected with the sealing part 2321, extends into the guide hole and is in sliding connection with the hole wall of the guide hole. Further, an end of the guiding post 234 away from the unsealing member 232 is connected to a groove wall of one end of the conducting groove 215, and the guiding post 234 is disposed inside the first elastic restoring member 231.

In order to prevent the unsealing member 232 from sliding out of the dispensing box 21 under the restoring force of the first elastic restoring member 231, so that the wash aid flows out, in this embodiment, preferably, an end of the unsealing member 232 remote from the pumping unit 3 is provided with an L-shaped hook 2323 protruding in an axial direction, a vertical edge of the L-shape is connected perpendicularly to an end surface of the sealing portion 2321, a lateral edge of the L-shape extends in a direction remote from the axial direction of the liquid outlet pipe 214, and an outer surface of the sealing portion 2321 is protruded. By arranging the clamping hooks 2323, when the unsealing piece 232 moves in the direction towards the pumping unit 3 under the action of the restoring force of the first elastic restoring piece 231, the clamping hooks 2323 are abutted with the side wall where the liquid outlet 213 is located, so that further outward movement of the unsealing piece 232 is limited, and when the distribution box 21 is separated from the pumping unit, the unsealing piece 232 is located inside the liquid outlet pipe 214 and seals the liquid outlet pipe 214.

Preferably, the opener 232 is provided with a plurality of hooks 2323, and the plurality of hooks 2323 are disposed on the upper half of the opener 232 to improve the fastening connection stability of the hooks 2323. In this embodiment, two hooks 2323 are symmetrically disposed, and in other embodiments, the number of hooks 2323 may be three or more.

In this embodiment, further, a clamping boss 216 may be protruding inward on the inner side of the sidewall where the liquid outlet 213 is located, for matching and clamping with the hook 2323. The shape and position of the clamping boss 216 are preferably in a semicircular structure consistent with those of the liquid outlet pipe 214, so that the processing of the distribution box 21 is simplified, and the structural strength of the distribution box 21 at the liquid outlet 213 can be improved.

Further, in order to reduce the residual of the wash aid in the reservoir 211, the wash aid can more smoothly flow from the reservoir 211 into the pumping unit 3, and in this embodiment, the bottom of the reservoir 211 is lowered in a direction toward the pumping unit 3, so that the wash aid at an end of the reservoir 211 away from the pumping unit 3 can more smoothly flow into the liquid outlet 213. The descending mode of the cavity bottom height can be stepped descending, and even if the cavity bottom is arranged into a plurality of step structures, the cavity bottom can also be continuously inclined descending, namely, the cavity bottom is arranged into an inclined surface structure.

In this embodiment, the end of the pipette 32 is closed, the pipette 32 includes a pipette portion 321 at the end, the outer diameter of the pipette portion 321 is equal to the inner diameter of the liquid outlet tube 214, and a pipette hole communicating with the cavity of the pipette 32 is formed in the pipette portion 321. When the pumping unit 3 and the dispensing cartridge 21 are assembled in place, the tip of the pipette 32 pushes the unsealing member 232, so that the unsealing member 232 slides along the inner wall of the liquid outlet pipe 214 and the bottom of the conducting groove 215 until the unsealing member 232 is completely moved out of the liquid outlet pipe 214, so that the pipette 32 extends into the liquid storage cavity 211, and liquid in the liquid storage cavity 211 enters the cavity of the pipette 32 through the liquid suction hole.

In order to prevent leakage of wash aid when the pumping unit 3 is assembled with the dispensing cartridge 21, the liquid suction portion 321 is provided with a first sealing groove at a side of the liquid suction port 3211 away from the opener 232, and a first sealing member 322 for realizing sealing connection between the liquid suction portion 321 and the liquid outlet pipe 214 is provided in the first sealing groove. And when the dispensing cartridge 21 is assembled with the pumping unit 3 in place, the portion of the liquid suction portion 321 provided with the liquid suction port 3211 extends into the liquid storage chamber 211, and the portion of the liquid suction portion 321 provided with the first sealing member 322 is located in the liquid outlet pipe 214 and is in sealing connection with the liquid outlet pipe 214, so that the wash aid in the liquid storage chamber 211 can only enter the liquid suction pipe 32 through the liquid suction port 3211.

Further, in order to prevent the wash aid in the pumping unit 3 from leaking out through the liquid suction port 3211 when the dispensing cartridge 21 is separated from the pumping unit 3, the outside of the liquid suction pipe 32 is sleeved with the connection sleeve 33, the connection sleeve 33 includes a first connection part 331 and a second connection part 332 disposed along an axial direction thereof, and the first connection part 331 is connected to an end of the second connection part 332 remote from the dispensing cartridge 21. The inner diameter of the first connection portion 331 is equal to the outer diameter of the liquid suction portion 321 so that the first connection portion 331 can be slidably and hermetically connected to the outer wall of the liquid suction tube 32. The liquid suction portion 321 has a second seal groove formed in a side of the liquid suction port 3211 facing the opener 232, and a second seal 323 is provided in the second seal groove. When the pumping unit 3 is separated from the dispensing cassette 21, the first connection part 331 is sleeved outside the liquid suction part 321, and the space between the first connection part 331 and the sealing part 2321 is sealed by the first sealing member 322 and the second sealing member 323, so that the wash aid in the pipette 32 cannot flow out of the pumping unit 3 through the liquid suction port 3211.

The inner diameter of the second connecting portion 332 is greater than or equal to the outer diameter of the liquid outlet pipe 214, so that an annular limiting step is formed between the first connecting portion 331 and the second connecting portion 332. And a second elastic restoring member 34 is connected to the connecting sleeve 33, one end of the second elastic restoring member 34 is connected to the connecting sleeve 33, and the other end is connected to the housing 31 of the pumping unit 3.

When the distribution box 21 is assembled with the pumping unit 3, the end surface of the liquid suction pipe 32 is abutted on the limiting step, and the movement of the connecting sleeve 33 relative to the liquid outlet pipe 214 is limited; simultaneously, under the external force, the liquid suction pipe 32 moves along the inside of the liquid suction pipe 32, so that the liquid suction pipe 32 and the connecting sleeve 33 slide relatively, the liquid suction part 321 is separated from the connecting sleeve 33 and enters the liquid outlet pipe 214, and the second elastic reset piece 34 is compressed. When the pumping unit 3 is separated from the dispensing cassette 21, the connecting sleeve 33 is abutted against the end face of the liquid outlet pipe 214 under the action of the restoring force of the second elastic restoring member 34, as the liquid outlet pipe 214 is drawn out of the liquid outlet pipe 32, the liquid outlet pipe 32 and the casing 31 of the pumping unit 3 move along the direction away from the connecting sleeve 33, the liquid outlet pipe 32 gradually contacts with the connecting sleeve 33, the second elastic restoring member 34 stretches, the restoring force of the second elastic restoring member 34 is reduced, and when the second elastic restoring member 34 is restored to the original length, the connecting sleeve 33 is separated from the liquid outlet pipe 214 and abutted, and the connecting sleeve 33 is synchronously separated from the liquid outlet pipe 214 from the liquid outlet pipe 32.

In this embodiment, preferably, the inner diameter of the second connecting portion 332 is larger than the outer diameter of the liquid outlet tube 214, so as to reduce the connection force between the second connecting portion 332 and the connecting sleeve 33, so that the connecting sleeve 33 and the liquid outlet tube 214 are only in abutting connection by the force of the second elastic restoring member 34, which is beneficial to restoring between the connecting sleeve 33 and the liquid suction tube 32.

Further, the outer diameter of the portion of the pipette 32 near the housing 31 of the pumping unit 3 is preferably smaller than the outer diameter of the pipette 321, so as to reduce the contact area between the pipette 32 and the connecting sleeve 33, and avoid the synchronous movement of the connecting sleeve 33 and the pipette 32 in the process of drawing the pipette 32 out of the drain pipe 214 under the driving of the friction force of the pipette 32, thereby causing the leakage of the wash aid.

In this embodiment, the end of the liquid suction portion 321 is chamfered to guide the liquid suction tube 32 into the liquid outlet tube 214.

In this embodiment, the first elastic restoring member 231 and the second elastic restoring member 34 are both springs.

In this embodiment, two liquid storage chambers 211 are provided in the dispensing box 21, i.e. two sets of structures such as the liquid outlet pipe 214, the unsealing component 23, and the liquid suction pipe 32 are correspondingly provided, so as to realize the suction of the washing auxiliary agent in different liquid storage chambers 211 by the pumping unit 3.

Fig. 9 is a sectional view taken along the direction B-B in fig. 5, and as shown in fig. 9, the pumping unit 3 includes a housing 31, a driving unit 35, and a pump column 36, a piston column 37, a piston 38, and the like provided inside the housing 31. Specifically, the housing 31 has a hollow structure having a receiving chamber 3111, the above-mentioned pipette 32 is vertically protruded outwardly from a lower end thereof, the drain pipe 39 is protruded upwardly from an upper end thereof, and the pipette 32 is communicated with the receiving chamber 3111 for sucking the wash aid in the reservoir 211 into the receiving chamber 3111 of the housing 31; the drain 39 is selectively communicated with the accommodating chamber 3111 for effecting the dispensing of the wash aid in the accommodating chamber 3111 into the dispensing box 1.

The housing 31 includes a box-like housing body 311 having an upper end opened, and a cover plate 312 provided at the upper end opening of the housing body 311, the cover plate 312 and the housing body 311 forming a closed cavity structure. The pipette 32 is disposed at the lower end of the housing main body 311, the drain pipe 39 is vertically protruded above the cover plate 312, and the pipette 32 is vertical to the drain pipe 39. The cover plate 312 is preferably connected with the shell main body 311 in a clamping manner, so that the cover plate 312 is convenient to connect with and detach from the shell main body 311. In other embodiments, the cover plate 312 and the housing body 311 may be detachably connected by threads or the like.

In this embodiment, the shell body 311 has a hollow hexahedral structure, and the cover plate 312 has a structure corresponding to the shell body 311, so that the overall structure size of the shell 31 can be reduced, and the setting of the automatic dispensing device is facilitated. The present invention is not limited to the specific external configuration of the housing 31.

The inside hollow pump column 36 that is provided with of shell main part 311, pump column 36 vertical setting, and upper end and shell main part 311 fixed connection, its lower extreme is from holding the chamber bottom of chamber 3111 certain height, makes pump column 36 hang and establishes in holding chamber 3111, and the upper end opening of pump column 36 and the lower extreme opening of pump column 36 all communicate with holding chamber 3111.

A hollow piston column 37 is arranged in the cavity of the pump column 36, the lower end of the piston column 37 is connected with a piston 38, the upper end of the piston column 37 extends into the liquid discharge pipe 39, the outer wall of the piston column 37 is in sliding sealing connection with the inner wall of the liquid discharge pipe 39, and the piston 38 is in sliding sealing connection with the inner wall of the pump column 36. The lower end of the piston cylinder 371 of the piston cylinder 37 is provided with a drain check valve 320 allowing fluid in the pump cylinder 361 to flow into the piston cylinder 371. The lower end of the pump column chamber 361 is provided with a liquid suction check valve 310 that allows fluid within the receiving chamber 3111 to flow from the lower end of the pump column 36 into the pump column chamber 361.

The outer wall of the piston rod 37 is connected with a driving unit 35, and the driving unit 35 can drive the piston rod 37 to reciprocate up and down in the pump rod cavity 361. During the liquid suction process of the pumping unit 3, the driving unit 35 drives the piston column 37 to move upwards along the pump column cavity 361, and the piston column 37 drives the piston 38 to slide relative to the inner wall of the pump column cavity 361, so that the volume of the pump column cavity 361 below the piston 38 is increased, the pressure is reduced, and the wash aid in the accommodating cavity 3111 flows into the pump column cavity 361 from the lower end of the pump column cavity 361 through the liquid suction check valve 310 under the action of pressure difference. During the draining process of the pumping unit 3, the driving unit 35 drives the piston column 37 to move downward in the pump column cavity 361, so that the piston 38 moves downward along the inner wall of the pump column cavity 361, the volume of the pump column cavity 361 below the piston 38 is reduced, and since the liquid suction check valve 310 at the lower end of the pump column cavity 361 does not allow the wash aid to flow back from the liquid suction check valve 310 to the accommodating cavity 3111, the wash aid between the piston 38 and the liquid suction check valve 310 enters the piston column cavity 371 through the liquid discharge check valve 320, and enters the liquid discharge tube 39 through the piston column cavity 371 under the action of pumping pressure to be discharged to the outside, so that the pumping unit 3 pumps the wash aid.

In this embodiment, the upper end of the drain pipe 39 is in sealed communication with the pumping inlet 126 of the dispensing box 1, and a check valve 391 is provided at the drain outlet of the drain pipe 39 to prevent the wash aid flowing out of the pumping unit 3 from flowing back into the drain pipe 39 again, thereby contaminating the wash aid in the pumping unit 3.

To improve the sealing performance between the piston 38 and the inner wall of the pump cylinder 361, a sliding seal 330 is provided between the piston 38 and the inner wall of the pump cylinder 361. In this embodiment, the sliding seal 330 is a Y-shaped seal ring, and two Y-shaped seal rings are arranged side by side along the axis of the piston 38, and the installation directions of the two Y-shaped seal rings are opposite, so as to improve the sealing between the piston 38 and the inner wall of the pump column cavity 361.

In this embodiment, the driving unit 35 is in a motor driving form, and the driving unit 35 is fixed on the outer side of the housing 31, and includes a driving motor, a transmission assembly, and an eccentric output shaft connected to the driving motor through the transmission assembly. The outer wall of the piston column 37 is connected with a connecting plate 340, and the connecting plate 340 is connected with the piston column 37 in a welding or detachable connection mode such as a thread. The connecting plate 340 is provided with a horizontally arranged strip hole 3401, one end of the eccentric output shaft extends into the strip hole 3401, and the shaft diameter of the output shaft is matched with the width of the strip hole 3401, so that the eccentric output shaft can only move along the length direction of the strip hole 3401 relative to the strip hole 3401. When the eccentric output shaft rotates around the circumference under the action of the driving motor, the eccentric output shaft has a motion component in the horizontal direction and a motion component in the vertical direction, the motion component in the horizontal direction of the eccentric output shaft enables the eccentric output shaft to move along the length direction of the strip hole 3401, and the motion component in the vertical direction of the eccentric output shaft enables the eccentric output shaft to drive the connecting plate 340 to synchronously move along the vertical direction, so that the piston column 37 is driven to move along the vertical direction.

In order to improve the accuracy of the movement of the piston rod 37, it is preferable that a vertical guide groove 362 is formed at a position of the pump rod 36 corresponding to the connection plate 340, and the guide groove 362 has an upper end opening. Two sides of the connecting plate 340 extend into the guide groove 362 respectively, and two sides of the connecting plate 340 are abutted with two side groove walls of the guide groove 362 respectively.

In this embodiment, since two liquid storage cavities 211 are provided in the distribution box 21, in order to perform separate liquid suction on each liquid storage cavity 211, two accommodating cavities 3111 are provided in the housing 31 of the pumping unit 3 side by side, each accommodating cavity 3111 is communicated with the corresponding liquid storage cavity 211 through one of the above-mentioned liquid suction pipes 32, and a set of structures such as a pump column 36, a piston column 37, a liquid discharge pipe 39 and the like are provided in each accommodating cavity 3111. In this embodiment, the two piston columns 37 share a set of driving unit 35, the driving unit 35 includes a driving motor, the driving motor is respectively connected with two eccentric output shafts through a sheave transmission assembly, the two eccentric output shafts are respectively connected with the corresponding piston columns 37 through connecting plates 340, and vertical reciprocating motion of different piston columns 37 is realized by controlling forward and reverse rotation of the driving motor. The use of a motor to control the movement of the two piston posts 37 is a conventional technical means in the art, and particularly in the field of automatic delivery of washing machines, the present embodiment will not be described in detail.

In the present embodiment, since the accommodating chamber 3111 communicates with the bottom of the liquid storage chamber 211, the liquid level in the liquid storage chamber 211 can be represented by the liquid level in the accommodating chamber 3111. Specifically, a liquid level detecting device 350 is provided in each accommodating chamber 3111 for detecting a liquid level in the accommodating chamber 3111, thereby obtaining a liquid level in the corresponding liquid storage chamber 211. The arrangement mode can facilitate the detection of the liquid level in the liquid storage cavity 211 and prevent the neglected loading of the liquid level sensor in the liquid storage cavity 211; and by detecting the liquid level in the accommodating chamber 3111, it is possible to better provide control over the operation of the pumping unit 3, avoid the idle operation of the pumping unit 3 occurring in the absence of the wash aid, and ensure the operational reliability of the pumping unit 3.

Preferably, in this embodiment, the liquid level detecting device 350 is a floating ball type sensor, and the setting of the floating ball type liquid level sensor is a conventional technical means in the art, which is not described in detail in this embodiment.

In this embodiment, the pumping unit 3 is preferably configured to pump the wash aid in the dispensing box 21, and since the hollow plunger 37 is disposed in the pumping unit 3, the upper end of the plunger cavity 371 is directly connected to the drain 39, and the lower end is selectively connected to the accommodating cavity 3111, the overall structure of the pumping unit 3 can be simplified, the pressure required for pumping the liquid by the pumping unit 3 can be reduced, and the pumping capacity of the pumping unit 3 for the wash aid can be improved. In other embodiments, any of the structures of the pumping unit 3 of the prior art may be used to pump the wash aid from the reservoir 211.

The embodiment of the invention also provides a washing machine, which comprises the automatic throwing device.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (8)

1. An automatic delivery device, comprising:

the distribution box (21) is provided with at least one liquid storage cavity (211), the bottom of one end side wall of the distribution box (21) is provided with a liquid outlet (213), the liquid outlet (213) is communicated with the liquid storage cavity (211), and the distribution box (21) is externally provided with a liquid outlet pipe (214) at the liquid outlet (213);

the pumping unit (3) is arranged at one end of the distribution box (21), the pumping unit (3) comprises a liquid suction pipe (32) arranged at the bottom of the liquid suction pipe, the liquid suction pipe (32) comprises a liquid suction part (321) positioned at the tail end, the tail end of the liquid suction part (321) is closed, and a liquid suction port (3211) communicated with a cavity of the liquid suction pipe (32) is formed in the side wall of the liquid suction part (321);

The unsealing assembly (23), the unsealing assembly (23) comprises an unsealing piece (232) and a first elastic reset piece (231), and the unsealing piece (232) can be inserted into the liquid outlet pipe (214) and is connected with the liquid outlet pipe (214) in a sealing mode; one end of a first elastic reset piece (231) is connected with one end of the unsealing piece (232) far away from the pumping unit (3), and the other end of the first elastic reset piece (231) is connected with the distribution box (21);

when the dispensing cartridge (21) is separated from the pumping unit (3), the unsealing member (232) is inserted into the liquid outlet pipe (214) and closes the liquid outlet (213); when the distribution box (21) is matched with the pumping unit (3), the tail end of the liquid suction pipe (32) is abutted with one end of the unsealing piece (232) far away from the first elastic reset piece (231), and the unsealing piece (232) is pushed to move inwards of the liquid storage cavity (211), so that the unsealing piece (232) slides out of the liquid outlet pipe (214), and the liquid suction pipe (32) is inserted into the liquid outlet pipe (214) and stretches into the liquid storage cavity (211) to suck liquid;

a first sealing piece (322) is arranged on one side, far away from the unsealing piece (232), of the liquid suction port (3211), and the part, provided with the first sealing piece (322), of the liquid suction part (321) is positioned in the liquid outlet pipe (214) and is in sealing connection with the liquid outlet pipe (214) through the first sealing piece (322);

The pumping unit (3) further comprises:

a housing (31) having a receiving chamber (3111), the pipette (32) protruding outside the housing (31), and the pipette (32) communicating with the receiving chamber (3111);

one end of the connecting sleeve (33) is sleeved on the liquid suction pipe (32) and can be in sliding sealing connection with the liquid suction part (321), and the other end of the connecting sleeve (33) can be in abutting connection with the end face of the liquid outlet pipe (214);

and one end of the second elastic resetting piece (34) is connected with the connecting sleeve (33), and the other end of the second elastic resetting piece is connected with the shell (31).

2. The automatic dispensing device according to claim 1, wherein the unsealing member (232) comprises a sealing portion (2321) and a guiding portion (2322) axially arranged along the liquid outlet pipe (214), one end of the sealing portion (2321) is connected with the guiding portion (2322), the other end of the sealing portion (2321) is connected with the first elastic resetting member (231), the outer diameter of the sealing portion (2321) is equal to the inner diameter of the liquid outlet pipe (214), and the outer diameter of the guiding portion (2322) gradually decreases along a direction away from the sealing portion (2321).

3. The automatic dispensing device according to claim 2, characterized in that the end of the sealing portion (2321) remote from the guiding portion (2322) is provided with a catch (2323) protruding outwards in the radial direction thereof.

4. Automatic dispensing device according to claim 1, wherein said unsealing assembly (23) further comprises:

a guide column (234) which is arranged in the liquid storage cavity (211) along the axial direction of the liquid suction pipe (32), wherein a guide hole with an opening facing the pumping unit (3) is formed in the guide column (234);

and one end of the guide rod (233) is connected with the unsealing piece (232), the other end of the guide rod is inserted into the guide hole, and the guide rod (233) is in sliding connection with the hole wall of the guide hole.

5. The automatic dispensing device according to claim 1, wherein a first sealing groove is formed in the peripheral wall of the liquid suction portion (321), and the first sealing member (322) is disposed in the first sealing groove.

6. The automatic dispensing device according to claim 1, characterized in that a second sealing groove is arranged on the liquid suction portion (321), a second sealing element (323) is arranged in the second sealing groove, the second sealing element (323) is positioned on one side of the liquid suction opening (3211) facing the unsealing element (232), and when the distribution box (21) is separated from the pumping unit (3), the connection sleeve (33) and the liquid suction portion (321) are connected in a sealing manner through the first sealing element (322) and the second sealing element (323).

7. Automatic delivery device according to claim 1, characterized in that the connecting sleeve (33) comprises:

a first connection portion (331) having an inner diameter identical to an outer diameter of the liquid suction portion (321);

and the second connecting part (332) is connected to one end, far away from the shell (31), of the first connecting part (331), and the outer diameter of the second connecting part (332) is larger than or equal to the outer diameter of the liquid outlet pipe (214).

8. A washing machine comprising an automatic delivery device according to any one of claims 1 to 7.