JP7124254B2 - Laundry additive case and washing machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to the field of washing machines, and more particularly to a laundry additive case that can be combined with a washing machine to realize automatic and multiple-dosing.

In a conventional washing machine, the amount of detergent to be added manually has to be determined by the laundry person based on experience before the wash starts, which increases the amount of work done by the laundry person. In addition, the control of the amount of detergent to be used becomes inappropriate, which tends to result in failure to wash cleanly or wastefulness. Therefore, in the related art, an automatic detergent injection technology has been proposed. Of the detergent dispensing cases, the laundry additive case, which can be filled once and used for multiple washes, automatically adds softener to each wash as needed. There are also other laundry additive cases in the detergent dispensing case.

At present, many patent applications have already been filed for automatic detergent dosing devices. US Pat. No. 5,300,000 discloses a detergent dispenser for a washing machine in which the detergent case comprises a siphon unit. In the device, the detergent is put into the detergent case and the washing water is injected into the detergent case to dilute the detergent in the case and then put it into the washing tank from the siphon unit. Although the above invention solves the problem that the laundry is damaged when the concentrated detergent is put into the washing tank as it is, it is impossible to achieve accurate control of the automatic addition of the detergent.

US Pat. No. 5,300,009 discloses a detergent dispenser for use in washing machines. The detergent dispenser includes a storage space, and the storage space defines a special detergent case placement groove. A first pin and a second pin for breaking through the special detergent case are provided in the seating groove of the special detergent case. A water supply hole is provided inside the first pin, and a water discharge hole is provided inside the second pin. Both the first pin and the second pin are configured such that after the ends thereof are inserted into a special detergent case, the water supply hole and the water discharge hole are communicated with the inner space of the special detergent case. . In the above invention, water is supplied to the detergent case from the water supply hole, and the detergent mixed by the water supply flows out from the water discharge hole into the washing machine. However, the detergent case is disposable, and the detergent case must be attached each time washing is performed.

In addition, at present, the laundry additive case filled with detergent and softener is generally a sealed case, and the detergent is quantitatively extracted from the case by the venturi effect or negative pressure effect, or by a metering pump or the like. . However, as the detergent is extracted, the air pressure inside the sealed laundry additive case continues to drop, making it more and more difficult for the detergent to flow out. Therefore, the ventilation structure must balance the air pressure within the laundry additive case. Furthermore, it is necessary to prevent the detergent from flowing out of the case due to factors such as tilting and vibration, and to prevent external impurities and moisture from entering the laundry additive case and contaminating the detergent. . Auto-dosing laundry additive cases currently on the market are generally disposable products and must be replaced with new laundry additive cases as soon as the dose from one case is used up. Therefore, resources are wasted, and the matching of customers and laundry additive cases is also a big problem.

In addition, the detergent in the detergent case is wasted because part of the liquid tends to remain on the bottom wall of the detergent case after being put into the washing machine. In addition, it is very inconvenient to wash the laundry additive case and its installation space.

In view of the above, the present invention is proposed.

Chinese Patent Application Publication No. 101360599 Chinese Patent Application Publication No. 107970347

The present invention eliminates the defects of the prior art, can be used repeatedly, is filled with laundry additives, and can realize automatic injection and multiple injections, so there is no need to reattach it every time you wash. The technical problem to be solved is to provide a laundry additive case. As a result, the automation level of the washing machine is improved, and the laundry additive can be smoothly and automatically added, and the unexpected outflow of the laundry additive is prevented.

In order to solve the above technical problems, the basic idea of the technical scheme adopted in the present invention will be described below.

That is, the laundry additive case includes a housing, and the housing includes a discharge port. A liquid ejection structure is detachably installed in the liquid ejection port, and the liquid ejection structure includes a check valve.

Further, the liquid ejection structure and the liquid ejection port are screwed together, or the liquid ejection structure and the liquid ejection port are engaged.

Further, the liquid ejection port is provided with a connection end extending to the outside of the housing, the liquid ejection structure includes a connection cap, and one end of the liquid ejection structure is inserted through the connection end to be inside the housing. and the other end is screwed or engaged with the connection end via the connection cap.

The outside of said connection cap is provided with a protruding structure to enhance friction. Further, a positioning structure is further provided outside the connecting portion between the connection cap and one end of the liquid ejection structure.

Further, the connection cap is integrally formed with the other end of the liquid discharge structure, and is reversely covered with the other end with a certain gap, and the connection end is sandwiched between them, It is screwed or engaged with the connection cap.

Further, the laundry additive case includes a first sealing unit for sealing the spout, wherein the first sealing unit is provided between the spout and the spout structure.

Further, the first seal unit is an annular packing, which is covered with the other end of the liquid discharge structure and fitted into the connection cap, and the connection end connects the connection cap and the other end of the liquid discharge structure. is pressed against the connection point of the

Further, the liquid discharge structure includes a suction unit provided at one end for sucking the laundry additive in the housing, and a liquid discharge unit provided at the other end detachably connected to the suction unit. The inlet of the suction unit extends toward and faces the bottom wall of the housing, and the bottom wall of the housing has a lower surface than the bottom wall surface corresponding to the inlet of the suction unit. The inlet of the suction unit is positioned in the groove and holds a gap between itself and the groove to allow liquid to pass through, and the outlet of the suction unit is the outlet of the suction unit. Communicates with the inlet of the liquid unit. The liquid discharge unit includes a check valve, and the check valve is provided in a flow path, one end of which communicates with the other end of the suction unit and the other end of which communicates with the loading conduit of the washing machine, and the flow path. A piston and a return spring are included, the piston closing the flow path under the action of the return spring.

Further, the other end of the flow path communicates with a loading pipeline of the washing machine for loading the laundry additive into the washing chamber of the washing machine, and the loading pipeline is provided with a communication structure. is provided at the end of the input pipeline, extends into the flow path and pushes the piston to open the flow path, and in the flow path, there is a space between the flow path and the input pipeline A second sealing unit is provided for sealing the connection.

Further, the laundry additive case further includes a one-way ventilation structure that is hermetically mounted on the housing, and when the air pressure inside and outside the laundry additive case changes, the structure is opened to ventilate in one direction. or the structure is closed.

Further, the housing 1 includes a position regulating structure. The shape and size of the position regulating structure match the position regulating structure in the installation space of the laundry additive case, and regulate the movement of the laundry additive case after installation.

Further, the housing includes a protruding structure provided on the upper side of the mounting-side wall of the housing to enhance frictional force.

The invention further provides a washing machine. The washing machine includes the laundry additive case described above.

By using the above technical solutions, the present invention has the following beneficial effects compared with the prior art.

1. Dispensing structure realizes automatic dosing and multi-time dosing of laundry additive. The liquid discharge structure includes a non-return valve, which can achieve a non-return effect, thus preventing external liquid from entering the laundry additive case and contaminating the laundry additive in the case. In addition, since the liquid discharge structure is detachable, the maintenance of the laundry additive case becomes easier and more convenient, and problems such as clogging can be avoided. In addition, the hermetic installation prevents leakage between the detachable liquid ejection structure and the liquid ejection opening, thereby avoiding unnecessary waste and contamination that cannot be cleaned.

2. By installing the liquid discharge structure detachably, the laundry additive case can be used repeatedly. By removing the housing, the laundry additive can be replenished from the spout to the housing.

3. A one-way vent structure that is hermetically attached to the housing balances the air pressure within the laundry additive case, thus facilitating extraction of the detergent. In addition, since the laundry additive case is installed in a hermetically sealed manner, it is waterproof, dust-proof, and liquid-leakage-proof.

4. The structure is simple and the number of members is reduced. Moreover, it is highly reliable, excellent in usability, and economical.

Specific embodiments of the present invention will be described in more detail below in combination with the drawings.

The drawings are part of the invention and are provided for a further understanding of the invention. The schematic examples of the invention and their descriptions are used for the interpretation of the invention, but do not unduly limit the invention. It should be understood that the drawings described below are only part of the examples, and those skilled in the art can derive further drawings from these drawings without creative effort.

FIG. 1 is an assembly exploded view of the laundry additive case of the present invention. FIG. 2 shows the laundry additive case of the present invention. FIG. 3 is a cross-sectional view taken along line AA of FIG. FIG. 4 is an enlarged view of part B in FIG. FIG. 5 is an enlarged view of part C of FIG. 6 is a left side view of FIG. 2. FIG.

It should be noted that these drawings and text descriptions are not intended to limit the scope of the inventive concept in any way, but rather to explain the inventive concepts to those skilled in the art with reference to specific embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments will be described clearly and concisely in combination with the drawings of the embodiments of the present invention. It should be noted that the following examples are for the purpose of explaining the present invention and do not limit the scope of the present invention.

In the description of the present invention, directions or positional relationships indicated by terms such as "upper", "lower", "inside", and "outer" are directions or positional relationships based on the drawings, and are for convenience of description of the present invention. It is merely for simplification of description and does not express or imply that the subject device or member must have a particular orientation and be configured and operated in a particular orientation. As such, it should not be construed as limiting the invention.

In describing the present invention, the terms "attached" and "connected" should be interpreted broadly, unless explicitly defined and limited otherwise. For example, it may be a fixed connection, a removable connection, or an integral connection. Also, the connection may be mechanical or electrical. Furthermore, it may be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can interpret the specific meanings of the above terms in the present invention according to specific situations.

Specific embodiments of the present invention will be further described below in combination with the drawings.

As shown in FIGS. 1-6, the laundry additive case is used to fill a washing machine with detergent or softener and includes a hermetically sealed housing 1 with a cavity therein. Said detergent or softener is placed in the cavity of housing 1 . The housing 1 includes a liquid ejection port 11, and a liquid ejection structure 2 is detachably installed in the liquid ejection port 11. As shown in FIG. Also, the liquid discharge structure 2 includes a check valve.

In the above solution, the liquid discharge structure 2 realizes automatic injection of washing additive and multiple automatic injection. The liquid discharge structure 2 includes a non-return valve, which can achieve a non-return effect, thus preventing the external liquid from entering the laundry additive case and contaminating the laundry additive in the case. In addition, since the liquid discharge structure 2 is detachably installed, the maintenance of the laundry additive case becomes easier and more convenient, and problems such as clogging can be prevented from being unsolvable. In addition, since the laundry additive case can be used repeatedly, when the laundry additive in the laundry additive case has been used or is about to be used up soon, the liquid ejection structure 2 can be removed so that the liquid ejection port 11 can be used. The housing 1 can be replenished with laundry additive from. In addition, by installing in a sealed manner, leakage cannot occur between the detachable liquid ejection structure 2 and the liquid ejection port 11, thus avoiding a situation in which unnecessary waste and contamination cannot be cleaned. The liquid ejection port 11 can be installed on the side wall or the bottom wall of the housing 1 .

Furthermore, the liquid discharge structure 2 and the liquid discharge port 11 are connected by screws. Alternatively, the liquid ejection structure 2 and the liquid ejection port 11 are in contact with each other. Preferably, the liquid discharge structure 2 and the liquid discharge port 11 are connected by screws.

In the above scheme, the reason why the liquid discharge structure 2 and the liquid discharge port 11 are preferably connected by a screw is that the screw connection is easier to implement and is more reliable. The liquid ejection port 11 may be provided so as to protrude outside the housing 1 and be connected to the liquid ejection structure 2 through a protruding portion, or may be provided so as not to protrude outside the housing 1 so as to connect the liquid ejection structure 2. It may be connected by inserting it through the ejection port 11 . When provided so as to protrude outside the housing 1, detachable connection with the discharge structure 2 is simpler and more convenient, and sealing is also easier. In addition, positioning and position regulation when attaching the laundry additive case to the laundry additive attachment device of the washing machine are facilitated. On the other hand, if it is provided so as not to protrude outside the housing 1, the difficulty of detachable connection and sealing becomes higher. However, when it is provided so as not to protrude to the outside of the housing 1, molding of the entire laundry additive case becomes easier, it is easier to install in the laundry additive installation device of the washing machine, and the appearance is excellent.

Furthermore, the liquid ejection port 11 is provided with a connection end 111 extending outside the housing 1 . Also, the discharge structure 2 includes a connection cap 21 . One end of the liquid discharge structure 2 is inserted through the connection end 111 and extends into the housing 1 , and the other end is screwed or engaged with the connection end 111 via the connection cap 21 . Preferably, the connection cap 21 and the connection end 111 are screwed together.

In the above scheme, the connecting end 111 is provided to extend outside the housing 1 and is detachably connected to the connecting cap 21 of the liquid discharge structure 2 . Threaded connections are easier to mold and more reliable than mating connections. The connection cap 21 may be provided at the other end of the liquid ejection structure 2 and may be molded integrally with the liquid ejection structure 2, may be fixedly connected to the liquid ejection structure 2, or may be detachably connected to the liquid ejection structure 2. may However, due to factors such as the need for sealing, the preferred embodiment is a one-piece splice cap 21 .

Further, the connection cap 21 is integrally formed with the other end of the discharge structure 2 and is reversely covered with the other end with a certain gap. The connection end 111 is sandwiched between them and screwed or engaged with the connection cap 21 . Preferably, the connecting end 111 is sandwiched between them and screwed to the connecting cap 21 .

In the above scheme, the connection cap 21 is reversely covered on the outside of the other end of the liquid ejection structure 2 means that the connection cap 21 extends radially from the other end of the liquid ejection structure 2 by a certain distance and then It extends in the opposite direction to the end of the liquid structure 2 and covers the end, and has a certain gap therebetween. The connection end 111 extends into these gaps and is sandwiched between them, and is screwed or engaged with the connection cap 21 . The connection end 111 may be screw-connected to the other end of the discharge unit 22 or may be engaged therewith. In a preferred embodiment, the connection end 111 may be screwed or engaged with the other end of the discharge unit 22, because screw connection facilitates molding and provides excellent reliability.

The outside of said connection cap 21 is provided with a protruding structure to enhance friction. Further, a positioning structure 211 is further provided outside the connecting portion between the connection cap 21 and one end of the discharge structure 2 .

By providing a protruding structure that strengthens friction on the outside of the connection cap 21, the connection cap 21 can be easily gripped at the time of mounting, and can be mounted at a predetermined position more easily and conveniently. The reason why the positioning structure 211 is provided is to prevent the mounting direction of the liquid ejection structure 2 from being deviated, which hinders the liquid ejection effect and prevents the liquid ejection effect from being lost.

Furthermore, the laundry additive case includes a first seal unit 4 that seals the spout 11 . The first seal unit 4 is provided between the liquid ejection port 11 and the liquid ejection structure 2 .

In the above scheme, since the liquid ejection structure 2 is detachably installed in the liquid ejection port 11, the first seal unit 4 is interposed therebetween so that the liquid in the housing 1 does not leak from the joint between the two. must be provided. As a result, the liquid ejection structure 2 can be detachably installed on the liquid ejection port 11 in a sealed manner.

Further, the first seal unit 4 is an annular packing, which is covered with the other end of the discharge structure 2 and fitted in the connection cap 21 . In addition, the first seal unit 4 is pressed against the connection point between the connection cap 21 and the other end of the discharge structure 2 by the connection end 111 .

In the above scheme, the first sealing unit 4 may be provided between the connecting cap 21 and the connecting end 111 or between the other end of the liquid discharge structure 2 and the connecting end 111 . However, if they are provided in these two places, although the sealing effect is the same as the above method, the frictional force increases and the difficulty of removal increases, so the above method is preferable.

Furthermore, the liquid discharge structure 2 has a suction unit 23 provided at one end for sucking the laundry additive in the housing 1, and a liquid discharge unit 22 provided at the other end and detachably connected to the suction unit 23. including. The inlet of the suction unit 23 extends toward the bottom wall of the housing 1 and faces the bottom wall. A recessed groove 12 is formed in the bottom wall of the housing 1 so as to correspond to the entrance of the suction unit 23 and is located lower than the surface of the bottom wall. The inlet of the suction unit 23 is positioned within the groove 12 and has a clearance between itself and the groove 12 to allow liquid to pass therethrough. Also, the outlet of the suction unit 23 communicates with the inlet of the discharge unit 22 . The liquid discharge unit 22 includes a check valve. The check valve has a flow path 221, one end of which communicates with the other end of the suction unit 23 and the other end of which communicates with the loading conduit of the washing machine, and a piston 222 and a return spring 223 provided in the flow path 221. include. The piston 222 closes the flow path 221 under the action of a return spring 223 .

In the above scheme, a suction unit 23 is provided. Moreover, the inlet of the suction unit 23 extends toward the bottom wall of the housing 1 and faces the bottom wall. Therefore, the laundry additive in the housing 1 of the laundry additive case can be extracted firmly, and no waste occurs. A recessed groove 12 is formed in the bottom wall of the housing 1 so as to correspond to the entrance of the suction unit 23 and is located lower than the surface of the bottom wall. The inlet of the suction unit 23 is positioned within the groove 12 and has a clearance between itself and the groove 12 to allow liquid to pass therethrough. The groove 12 serves to collect the laundry additive when the remaining amount of laundry additive is low. In addition, since the inlet of the suction device is located in the recess 12, the laundry additive is fully available, maximal savings, and no waste. Preferably, the suction unit 23 has a hollow tubular structure with a channel formed therein. One end of the channel faces the bottom wall of the housing 1 and the other end communicates with the inlet of the liquid discharge unit 22 . The channel forms an arcuate diverting channel between the inlet and the outlet. A portion of the flow path that changes direction corresponding to the inlet of the discharge unit 22 forms an arcuate surface extending outward. Preferably, the radius of the arcuate surface is greater than the radius of the channel. The outwardly extending arcuate surface favors the flow of the laundry additive in the channel. Compared to the case where a right angle or a substantially right angle is provided at the direction change point, in the present invention, the direction change point is an arcuate surface that extends outward, which is advantageous for liquid flow and intermittent flow. should not.

Moreover, the other end of the flow path 221 communicates with the loading line of the washing machine for loading the laundry additive into the washing chamber of the washing machine. A communication structure is provided in the injection pipeline. The communication structure is provided at the end of the input conduit and extends into the flow path 221 to push the piston 222 to open the flow path 221 . In addition, a second seal unit is provided in the flow path 221 to seal the connecting portion between the flow path 221 and the input pipeline.

In the above solution, the communication structure may be installed as a protruding structure or have a protruding structure. The protruding structure can extend into the flow path 221 and cooperate with the piston 222 . The protruding structure pushes open the piston 222 to open the check valve, and the liquid is discharged from the liquid discharge structure 2 . On the other hand, when the protruding structure is retracted, the piston 222 returns to its original position due to the action of the elastic force of the return spring 223, and liquid cannot be discharged from the liquid discharge structure 2. FIG.

Further, the laundry additive case includes a one-way ventilation structure 3 that is hermetically mounted on the housing 1 . When the air pressure on both the inside and outside of the laundry additive case changes, the structure opens to ventilate in one direction, or the structure closes.

In the above scheme, the laundry additive case is a sealed housing 1 as a whole. The one-way ventilation structure 3 only allows one-way ventilation of the housing 1 , and none of liquids, impurities, etc. can flow through both sides of the carrier through the one-way ventilation structure 3 . In addition, the one-way ventilation structure 3 exerts a sealing effect on the housing 1 as well as one-way ventilation.

Further, the housing 1 includes a position regulating structure 13. As shown in FIG. The shape and size of the position regulating structure 13 match those of the position regulating structure 13 in the installation space of the laundry additive case, and regulate the movement of the laundry additive case after installation.

Further, the housing 1 includes a protruding structure provided on the upper side of the mounting side wall of the housing 1 to strengthen the frictional force.

The invention further provides a washing machine. The washing machine includes the laundry additive case described above.

As shown in FIGS. 1 to 6, in this embodiment, the laundry additive case is used to fill a washing machine with detergent or softener, and has a sealed housing 1 with a cavity inside. include. Said detergent or softener is placed in the cavity of housing 1 . The housing 1 includes a liquid ejection port 11, and a liquid ejection structure 2 is detachably installed in the liquid ejection port 11. As shown in FIG. Also, the liquid discharge structure 2 includes a check valve. The liquid discharge port 11 is installed on the side wall of the housing 1 .

The liquid discharge port 11 is provided with a connection end 111 extending outside the housing 1 . Also, the discharge structure 2 includes a connection cap 21 . One end of the liquid discharge structure 2 is inserted through the connection end 111 and extends into the housing 1 , and the other end is screwed to the connection end 111 via the connection cap 21 .

The connection cap 21 is integrally formed with the other end of the discharge structure 2 and is reversely covered with the other end with a certain gap. The connection end 111 is sandwiched between them and screwed to the connection cap 21 . The outside of said connection cap 21 is provided with a protruding structure to enhance friction. Further, a positioning structure 211 is further provided outside the connecting portion between the connection cap 21 and one end of the discharge structure 2 .

The laundry additive case further includes a first seal unit 4 that seals the spout 11 . The first seal unit 4 is provided between the liquid ejection port 11 and the liquid ejection structure 2 .

The first seal unit 4 is an annular packing, which is covered with the other end of the discharge structure 2 and is fitted in the connection cap 21 . In addition, the first seal unit 4 is pressed against the connection point between the connection cap 21 and the other end of the discharge structure 2 by the connection end 111 .

The liquid discharge structure 2 further includes a suction unit 23 provided at one end for sucking the laundry additive in the housing 1, and a liquid discharge unit 22 provided at the other end and detachably connected to the suction unit 23. include. The inlet of the suction unit 23 extends toward the bottom wall of the housing 1 and faces the bottom wall. A recessed groove 12 is formed in the bottom wall of the housing 1 so as to correspond to the entrance of the suction unit 23 and is located lower than the surface of the bottom wall. The inlet of the suction unit 23 is positioned within the groove 12 and has a clearance between itself and the groove 12 to allow liquid to pass therethrough. Also, the outlet of the suction unit 23 communicates with the inlet of the discharge unit 22 . The liquid discharge unit 22 includes a check valve. The check valve has a flow path 221, one end of which communicates with the other end of the suction unit 23 and the other end of which communicates with the loading conduit of the washing machine, and a piston 222 and a return spring 223 provided in the flow path 221. include. The piston 222 closes the flow path 221 under the action of a return spring 223 . Between the outer wall of the piston 222 and the inner wall of the flow path 221, a gap is maintained to allow the liquid to flow. Also, a contraction portion is provided in the flow path 221 . The piston 222 is pressed against the contraction portion by the action of a return spring 223 to close the flow path 221 .

The suction unit 23 has a hollow tubular structure, and a channel is formed inside. One end of the channel faces the bottom wall of the housing 1 and the other end communicates with the inlet of the liquid discharge unit 22 . The channel forms an arcuate diverting channel between the inlet and the outlet. A portion of the flow path that changes direction corresponding to the inlet of the discharge unit 22 forms an arcuate surface extending outward. The radius of the arcuate surface is greater than the radius of the channel.

The other end of the flow path 221 communicates with the loading line of the washing machine for loading the laundry additive into the washing chamber of the washing machine. A communication structure is provided in the injection pipeline. The communication structure is provided at the end of the input conduit and extends into the flow path 221 to push the piston 222 to open the flow path 221 . In addition, a second seal unit is provided in the flow path 221 to seal the connecting portion between the flow path 221 and the input pipeline.

The communicating structure is a projecting structure. The protruding structure can extend into the flow path 221 and cooperate with the piston 222 . In this embodiment, the communication structure has a columnar structure, and a channel is formed inside. One end of the communication structure is connected with the laundry additive case to open the check valve, and the other end is connected with the loading line of the washing machine. Among them, one side wall connected to the laundry additive case has an opening communicating with the internal flow path. Therefore, when the end pushes the piston 222 open, the laundry additive is guided through the opening into the flow path of the communication structure and enters the washing machine through the input conduit.

The laundry additive case further includes a one-way ventilation structure 3 that is hermetically attached to the housing 1 . When the air pressure on both the inside and outside of the laundry additive case changes, the structure opens to ventilate in one direction, or the structure closes.

The housing 1 of the laundry additive case is provided with a mounting groove 14 for the one-way ventilation structure 3 . The bottom wall of the mounting groove 14 is provided with a mounting opening for mounting the one-way ventilation structure 3 and a plurality of ventilation holes 141 passing through the bottom wall of the mounting groove 14 . The lower surface of the bottom wall of the mounting groove 14 further includes an annular groove, and the outlet of the ventilation hole 141 is provided inside the annular groove. This embodiment includes four vents 141 .

The one-way ventilation structure 3 is an elastic material member, includes an opening/closing portion 31 and a connection portion 32 , and is connected to the mounting opening via the connection portion 32 . The opening/closing portion 31 opens and closes in accordance with changes in air pressure on both the inner and outer sides of the housing 1, so that the ventilation hole 141 ventilates or closes in one direction. Since the opening/closing part 31 is made of an elastic material, it can be deformed by a certain amount of pressure, and then can recover its original state when the pressure is removed. The opening/closing part 31 and the connection part 32 are screwed, engaged, adhered, or integrally molded.

The opening/closing part 31 has an inverted umbrella-like structure or conical structure, is mounted inside the housing 1 , and covers the lower end surface of the mounting groove 14 of the housing 1 . Also, the proximal end of the opening/closing part 31 extends into an annular groove. When the opening/closing part 31 is closed, the proximal end extends into the annular groove to seal the vent hole 141 . Further, when the opening/closing portion 31 is opened, the opening/closing portion 31 is deformed so that the proximal end is separated from the annular recessed groove, and the ventilation hole 141 ventilates in one direction.

The connection portion 32 is provided with an annular boss 321 and a transition portion 322 . The annular boss 321 is engaged with the mounting opening to engage the connecting portion 32 in the mounting opening. Further, the transition portion 322 is provided between the annular boss 321 and the opening/closing portion 31 . A hollow hole 323 that assists the deformation of the opening/closing portion 31 is provided inside the transition portion 322 . Moreover, the cross section of the annular boss 321 is semicircular. Since the hollow hole 323 provided inside the transition portion 322 extends so as to pass through the opening/closing portion 31, the force required to deform the opening/closing portion 31 is further reduced.

In this embodiment, the laundry additive case has a cubic or cuboid structure.

As shown in FIGS. 1 to 6, in this embodiment, the laundry additive case is used to fill a washing machine with detergent or softener, and has a sealed housing 1 with a cavity inside. include. Said detergent or softener is placed in the cavity of housing 1 . The housing 1 includes a liquid ejection port 11, and a liquid ejection structure 2 is detachably installed in the liquid ejection port 11. As shown in FIG. Also, the liquid discharge structure 2 includes a check valve.

Compared with Example 1, the present example differs in that the liquid ejection structure 2 and the liquid ejection port 11 are brought into contact with each other. The liquid discharge port 11 is provided with a connection end 111 extending outside the housing 1 . Also, the discharge structure 2 includes a connection cap 21 . One end of the liquid discharge structure 2 is inserted through the connection end 111 and extends into the housing 1 , and the other end is engaged with the connection end 111 via the connection cap 21 .

As shown in FIGS. 1 to 6, in this embodiment, the laundry additive case is used to fill a washing machine with detergent or softener, and has a sealed housing 1 with a cavity inside. include. Said detergent or softener is placed in the cavity of housing 1 . The housing 1 includes a liquid ejection port 11, and a liquid ejection structure 2 is detachably installed in the liquid ejection port 11. As shown in FIG. Also, the liquid discharge structure 2 includes a check valve.

In this embodiment, the laundry additive case has a cubic or cuboid structure.

Compared with the first embodiment, the present embodiment is different in that the liquid discharge port 11 is provided so as not to protrude outside the housing 1 . The liquid ejection structure 2 is inserted into the liquid ejection port 11 and is detachably sealed.

As shown in FIGS. 1 to 6, in this embodiment, the laundry additive case is used to fill a washing machine with detergent or softener, and has a sealed housing 1 with a cavity inside. include. Said detergent or softener is placed in the cavity of housing 1 . The housing 1 includes a liquid ejection port 11, and a liquid ejection structure 2 is detachably installed in the liquid ejection port 11. As shown in FIG. Also, the liquid discharge structure 2 includes a check valve.

As compared with the first embodiment, the present embodiment differs in that the liquid discharge port 11 is provided on the bottom wall of the housing 1 .

Said check valve is installed vertically in the housing 1 of the laundry additive case. The inlet end of the suction unit 23 extends so as to bend toward the bottom wall of the housing 1, and the inlet faces the bottom wall while maintaining a gap between the suction unit 23 and the bottom wall to allow liquid to pass therethrough. The suction unit 23 has a hollow tubular structure, and a channel is formed inside. One end of the channel faces the bottom wall of the housing 1, and the other end communicates with the inlet of the check valve. The flow channel is formed with a guiding path that changes direction twice between the inlet and the outlet. The combination of the suction unit 23 and the check valve forms an 'n'-shaped flow path 221 . Preferably, the portion of the flow path that changes direction corresponding to the inlet of the check valve forms an arcuate surface that expands outward. Since the portion of the channel that changes direction corresponding to the inlet of the check valve has an arcuate surface that expands outward, it is advantageous for the flow of the laundry additive in the channel. Compared to the case where the direction change point is provided with a right angle or a substantially right angle, in this embodiment, the direction change point is designed to be an arcuate surface that expands outward, which is advantageous for liquid flow. , does not result in intermittent flow.

As shown in FIGS. 1 to 6, in this embodiment, the laundry additive case is used to fill a washing machine with detergent or softener, and has a sealed housing 1 with a cavity inside. include. Said detergent or softener is placed in the cavity of housing 1 . The housing 1 includes a liquid ejection port 11, and a liquid ejection structure 2 is detachably installed in the liquid ejection port 11. As shown in FIG. Also, the liquid discharge structure 2 includes a check valve.

Compared with the first embodiment, the present embodiment is different in that the housing 1 is provided with a vent, and the one-way ventilation structure is provided in the vent in a sealed manner.

The one-way ventilation structure includes a ventilation member and an opening/closing member. The ventilation member is provided with a ventilation hole, and the opening/closing member includes an opening/closing portion. When the air pressure on both the inside and outside of the housing 1 of the laundry additive case changes, the opening and closing part is opened and closed, so that the ventilation hole is ventilated or closed in one direction.

The ventilation member is provided with at least one ventilation hole. The ventilation holes pass through the upper and lower end faces of the ventilation member. Further, the exhaust ports of the vent holes are uniformly distributed on the lower end surface in the circumferential direction. The ventilation member is further provided with a connection hole for connecting the opening/closing member and an annular concave groove for assisting the sealing of the opening/closing member. The connection hole and the annular groove are provided coaxially. Also, the vent holes are provided uniformly in the circumferential direction around the axis of the connection hole. This prevents the opening and closing part from being completely opened and not closed back to its original position due to non-uniform distribution of the air holes. A position engagement boss for engaging the opening/closing member is formed in the connection hole. The annular groove is provided on the lower end surface of the ventilation member, and the exhaust port of the ventilation hole is provided on the lower end surface within the annular groove. An inner wall of the annular groove is inclined toward the air hole. More preferably, the inner wall of the annular groove extends so as to transition to the outer edge of the air hole while being inclined. As a result, the sealing effect for the opening/closing portion is improved.

The opening/closing member is an elastic material member and includes an opening/closing portion and a connecting portion. Preferably, the opening and closing member is a one-piece resilient material member. Since the opening/closing portion of the opening/closing member is made of an elastic material, it can be deformed by a certain amount of pressure and then restored to its original state when the pressure is removed. The opening and closing part and the connecting part are screwed, engaged, glued, or integrally molded, preferably integrally molded.

The opening/closing part has an inverted umbrella-like structure or a cone-like structure, covers the lower end surface of the ventilation member, and extends into an annular groove at its proximal end. The reason why the opening and closing part has an inverted umbrella-like structure or conical structure is that it deforms only when the opening and closing part receives a certain amount of pressure in one direction, and after deformation, it has good deformation recovery due to its own structural factors. so that they may have power. When the closure is closed, the proximal end extends into the annular groove to seal the vent. Further, when the opening/closing portion is opened, the opening/closing portion is deformed so that the proximal end is separated from the annular recessed groove, and the ventilation hole ventilates in one direction.

The connecting portion is provided with an annular boss and a transition portion. The annular boss engages the position engagement boss of the connection hole to engage the connection portion in the connection hole. Also, the transition portion is provided between the annular boss and the opening/closing portion. A hollow hole is provided inside the transition portion to assist deformation of the opening/closing portion. In addition, the annular boss has a semi-circular cross-section in order to more conveniently, quickly and effortlessly engage the opening and closing member with the position engaging boss of the connecting hole. Since the hollow hole provided inside the transition portion extends through the opening/closing portion, the force required for deformation of the opening/closing portion is further reduced.

The foregoing are merely preferred embodiments of the invention and are not intended to limit the invention in any form. Although the present invention has been disclosed above through preferred embodiments, it is not intended to limit the present invention. Within the scope of the technical solution of the present invention, slight variations or supplements made by those skilled in the art using the technical content presented above are regarded as equally modified equivalent embodiments, and any of them is considered as an equivalent embodiment of the present invention. It does not deviate from the contents of the plan. In addition, simple modifications, equivalent variations and supplements added to the above embodiments based on the technical essence of the present invention are all within the scope of the present invention.

Reference Signs List 1 housing 11 discharge port 111 connection end 12 groove 13 position control structure 14 mounting groove 141 ventilation hole 2 discharge structure 21 connection cap 211 positioning structure 22 discharge unit 221 flow path 222 piston 223 return spring 23 suction unit 3 ONE-WAY VENTILATION STRUCTURE 31 Opening/Closing Portion 32 Connection Portion 321 Annular Boss 322 Transition Portion 323 Hollow Hole 4 First Seal Unit

Claims (4)

a housing, wherein the housing compriseson the side wallA laundry additive case including a spout,
A liquid discharge structure is detachably installed in the liquid discharge port, and the liquid discharge structure includes a check valve. fruit,
The liquid discharge port is provided with a connection end extending outside the housing, the liquid discharge structure includes a connection cap, and one end of the liquid discharge structure is inserted through the connection end to be inside the housing. The connection cap is integrally formed with the other end of the discharge structure and is reversely covered with the other end with a certain gap, and the connection end is connected to the connection cap and the discharge structure. sandwiched between the other end of the liquid structure, the connection end being screwed or engaged with the connection cap;
The laundry additive case further includes a first seal unit that seals the liquid spout, wherein the first seal unit is an annular packing that covers the other end of the liquid spout structure and connects to the liquid spout. fitted into the cap and pressed by the connecting end against the connecting point between the connecting cap and the other end of the discharge structure;
The liquid discharge structure includes a suction unit provided at one end of the liquid discharge structure for sucking the laundry additive in the housing, and a suction unit provided at the other end of the liquid discharge structure and detachably connected to the suction unit. further comprising a liquid unit;
The suction unit has a hollow tubular structure with a channel formed therein, and an inlet of the suction unit extends toward and faces the bottom wall of the housing. In the bottom wall of the housing, a recessed groove is formed at a position lower than the surface of the bottom wall corresponding to the entrance of the suction unit, and the entrance of the suction unit faces downward and is recessed. A passage for passing liquid is held between the suction unit and the recessed groove, the outlet of the suction unit communicates with the inlet of the liquid discharge unit, and the liquid passage is located in the groove. A direction change point corresponding to the inlet of the liquid discharge unit is an arcuate surface,
The check valve includes a flow path, one end of which communicates with the other end of the suction unit and the other end of which communicates with the loading conduit of the washing machine, and a piston and a return spring provided in the flow path, wherein the piston is , closing the flow path by the action of a return spring A laundry additive case characterized by: The other end of the flow path communicates with an injection conduit of the washing machine for injecting the laundry additive into the washing chamber of the washing machine, and the injection conduit is provided with a communication structure, the communication structure comprising: The flow path is provided at the end of the input pipeline, and extends into the flow path to push the piston to open the flow path, and the flow path includes a connection point between the flow path and the input pipeline. 2. The laundry additive case of claim 1 , further comprising a second sealing unit for sealing the. The laundry additive case further includes a one-way ventilation structure that is hermetically mounted on the housing, and the structure is opened to ventilate in one direction when the air pressure inside and outside the laundry additive case changes, or 2. The laundry additive case of claim 1, wherein said structure is closed. A washing machine comprising the laundry additive case according to any one of claims 1 to 3 .

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