KR101256136B1 - Detergent input apparatus for drum type washing machine - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum washing machine, and more particularly, to a detergent washing apparatus for a drum washing machine, which automatically supplies a liquid detergent every time a washing operation is started by desalination of a large amount of liquid detergent and prevents the loss of detergent.

The present invention provides a storage block having a storage unit for storing a liquid additive; A detergent container detachably provided in the storage unit and provided with an inlet port and an outlet port for desalination of the liquid detergent; A pump provided in the storage block and connected to the detergent container to supply the liquid additive; And a coupling part provided in the storage unit and the detergent container so as to be inserted again after the detergent container is seated in the storage unit.

Washing machine, drum washing machine, tub, detergent box, pump

Description

Detergent input device for drum washing machine {DETERGENT INPUT APPARATUS FOR DRUM TYPE WASHING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum washing machine, and more particularly, to a detergent washing apparatus for a drum washing machine, which automatically supplies a liquid detergent every time a washing operation is started by desalination of a large amount of liquid detergent and prevents the loss of detergent.

A general drum washing machine is provided with a cabinet, a tub provided inside the cabinet to wash water, a drum rotatably installed inside the tub to accommodate laundry, a driving device installed on the tub and connected to the drum to rotate the drum; And a water supply device connected to the tub to supply the washing water, and a drainage device extending from the tub to the outside of the cabinet to drain the washing water from the tub to the outside of the cabinet.

Here, the water supply device is provided with a water supply pipe inserted from the outside of the cabinet and connected to the tub, and a detergent box for storing detergent is installed at one side of the water supply pipe.

The detergent box includes a first accommodating part for storing the detergent for pre-washing before washing, a second accommodating part for storing the detergent for washing, and a fabric softener supplied to the tub and drum before the rinsing operation is started. A third storage unit for desalination is formed so that the washing water is supplied at each storage box at a time interval.

The drum washing machine according to the related art has a size that can accommodate the detergent required to perform one washing operation because the space of the storage unit formed in the detergent box has to be put in the detergent every time the washing operation is performed. There is a problem.

Drum washing machine according to the prior art there is a problem that can not be added to change the type of detergent according to the user's taste because any one of the detergent for powder detergent and the detergent for liquid detergent is installed.

Therefore, there is a need for improvement.

The present invention provides a detergent washing apparatus for a drum washing machine in which a detergent capable of performing a plurality of washing operations is stored, and which can easily supply a detergent amount required for one washing operation when the washing operation is performed. The purpose is.

In addition, an object of the present invention is to provide a detergent washing device for drum washing machine that can be added to select the type of detergent according to the user's taste.

In addition, an object of the present invention is to provide a detergent washing device for a drum washing machine that can be easily supplied to the liquid detergent, and can be easily cleaned and replaced.

In order to achieve the above object, the present invention provides a storage block having a storage unit for storing a liquid additive; A detergent container detachably provided in the storage unit and provided with an inlet port and an outlet port for desalination of the liquid detergent; A pump provided in the storage block and connected to the detergent container to supply the liquid additive; And a coupling part provided in the storage unit and the detergent container so as to be inserted again after the detergent container is seated in the storage unit.

In addition, the coupling portion of the present invention, the coupling groove portion formed in the storage; And a protrusion formed in the detergent container and inserted into the coupling groove.

In addition, since the inclined portion is formed in the coupling groove of the present invention, when the protrusion is slid along the inclined portion, the detergent container is provided with a detergent washing device for a drum washing machine, characterized in that is inserted into the storage unit again.

In addition, there is provided a detergent washing apparatus for a drum washing machine, characterized in that a sealing member is provided in the hole portion of the storage portion into which the discharge port of the present invention is inserted.

Detergent injection device for the drum washing machine is provided with a detergent container for a large amount of detergent, and a pump for taking out and supplying the detergent from the detergent container, it is possible to supply exactly the amount of detergent required to perform a single washing operation to the tub. Therefore, since a separate sensor for measuring the amount of detergent is not required, it is possible to reduce the time and cost required to manufacture the injector, and to control the amount of detergent accurately.

In addition, the detergent dispenser for drum washing machine according to the present invention is provided with a storage unit for storing the powder detergent, the selection unit is provided with a selection key for determining whether to supply the wash water, the type of detergent according to the user's taste Since it can be selected and supplied, there is an advantage to facilitate the user's convenience.

In addition, the detergent injection device for a drum washing machine according to the present invention is provided with a coupling portion to be inserted again after the detergent container is seated, there is an advantage that can prevent the liquid detergent is lost because the detergent container and the bracket is communicated after the sealing of the discharge port is made There is this.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a detergent washing apparatus and a control method for a drum washing machine according to the present invention.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a perspective view showing a drum washing machine is installed detergent cleaning apparatus according to an embodiment of the present invention, Figure 2 is a perspective view showing a detergent washing apparatus for a drum washing machine according to an embodiment of the present invention, Figure 3 is Detergent injection device for a drum washing machine according to an embodiment of the present invention is a plan view.

In addition, Figure 4 is an exploded perspective view showing a detergent container of the detergent dispenser device for a drum washing machine according to an embodiment of the present invention, Figure 5 is a detergent container mounting structure of the detergent dispenser device for a drum washing machine according to an embodiment of the present invention 6 is a cross-sectional view illustrating a detergent container mounting structure of a detergent washing machine for a drum washing machine according to an embodiment of the present invention, and FIG. 7 is a detergent washing device for a drum washing machine according to an embodiment of the present invention. Is an exploded perspective view showing a pump of the pump.

1 to 7, a detergent washing device 100 for a drum washing machine according to an embodiment of the present invention includes storage units 22 and 24 in which a liquid additive is stored and an accommodating part 70 in which a powder detergent is stored. The storage block 20 having a; and a pump 50 provided in the storage block 20 and connected to the storage units 22 and 24 to supply the liquid additive, and the detergent supplied to the tub (not shown) A control unit 90 that determines whether the pump 50 is driven and whether the washing water is supplied to the storage unit 70 according to the selection key 80 (see FIG. 7) for determining the type and the operation of the selection key 80. It includes.

The user selects the type of detergent before storing the laundry and starts the washing operation. The user selects the liquid detergent by operating the selection key 80 installed on the outer wall of the cabinet 10 and starts the washing operation. When the pump 50 is supplied, the liquid detergent stored in the reservoir 22 is supplied to the tub.

When the user starts the washing operation after selecting the powder detergent, the washing water is supplied to the tub through the storage unit 70 in a state where the pump 50 is not driven, so that the powder detergent injected into the storage unit 70 is washed with the washing water. Bro is supplied.

Here, the storage block 20 is a first storage unit 22 for storing the liquid detergent, a second storage unit 24 for storing the fabric softener, and a first storage unit 72 for storing the pre-washing powder detergent ) And a second storage portion 74 in which the laundry powder detergent is stored.

A first detergent container 32 in which the liquid detergent is stored is detachably installed in the first storage part 22, and a second detergent container 34 in which the fabric softener is stored is detachably installed in the second storage part 24. Therefore, when the detergent container 30 is separated from the storage block 20, a liquid additive, that is, a liquid detergent or a fiber softener can be easily added to the detergent container 30, and the detergent container 30 can be easily cleaned.

Here, the detergent container 30 is made of the size of the fresh water in the amount of the liquid additive that can perform a plurality of washing operations, the time the pump 50 is driven by the control unit 90 so that one washing operation is During the process, the driving time of the pump 50 is adjusted to supply the amount of liquid additive required for one washing operation to the tub.

As a result, the user can perform a plurality of washing operations without adding the liquid additive after adding a large amount of the liquid additive.

Since the reservoirs 22 and 24 and the detergent container 30 are provided with a coupling part 60 to be inserted again after the detergent container 30 is seated in the storage units 22 and 24, the detergent container 30 is stored in the storage unit 22. , The liquid additive is prevented from being lost at an interval between the discharge port 31b of the detergent container 30 and the storage units 22 and 24 when it is seated in the container 24, and then the discharge port 31b is inserted when the detergent container 30 is inserted again. The detergent container 30 and the pump 50 communicate with each other so as to be opened.

In this way, after the gap between the discharge port 31b and the storage units 22 and 24 is sealed, the discharge port 31b of the detergent container 30 is opened, so that the liquid additive discharged through the discharge port 31b is separated from the detergent container 30. The loss at the interval between the reservoirs 22, 24 is suppressed.

Coupling portion 60 is formed in the storage (22, 24) and the coupling groove portion 62 (see Fig. 2) having an inclined portion 64, and formed in the detergent container 30 is inserted into the coupling groove portion 62 Projection 66 (see Fig. 5).

The coupling groove 62 is a groove formed on the inner walls of the storage units 22 and 24. Since the coupling groove 62 is formed long in the vertical direction, when the detergent container 30 is inserted into the storage units 22 and 24, As the projection 66 slides along the coupling groove 62, the detergent container 30 is inserted into the storage units 22 and 24.

In addition, since the inclined portion 64 bent in one direction and inclined downward is formed at the inner end of the coupling groove 62, the projection 66 descending in the vertical direction along the coupling groove 62 is the inclined portion 64. When it is started to be inserted into the projection (66) is lowered while moving in the lateral direction along the peripheral surface of the storage (22, 24).

As described above, when the projection 66 formed on one side of the circumferential surface of the detergent container 30 is lowered while rotating in the lateral direction, the detergent container 30 is also lowered while being rotated.

Since the sealing part 35b is provided in the hole part 21 of the storage parts 22 and 24 into which the discharge port 31b (see FIG. 5) is inserted, the detergent container 30 is connected to the storage part 22, 24, the discharge port 31b of the detergent container 30 is inserted into the hole 21 of the storage units 22 and 24, and the valve cap 39 of the valve 33 to be described later is connected to the discharge port 31b. Since the sealing member 35b is installed on the circumferential surface, the sealing member 35b is in close contact with the circumferential surface of the valve cap 39.

Therefore, it is possible to prevent the liquid additive from being lost at the interval between the valve cap 39 and the storage units 22 and 24 in a state where the detergent container 30 is seated in the storage units 22 and 24.

Thus, since the gap between the valve cap 39 and the storage portions 22 and 24 is sealed before the discharge port 31b of the detergent container 30 is opened, the liquid additive is added at the moment when the discharge port 31b of the detergent container 30 is opened. The loss can be suppressed.

The valve 33 is installed in the discharge port 31b, and the brackets 35 for opening the valve 33 are installed in the storage units 22 and 24, and thus the detergent container 30 is mounted on the storage units 22 and 24. When it is inserted again later, the bracket 35 opens the valve 33 to open the discharge port 31b of the detergent container 30.

Here, the bracket 35 is in communication with the pump 50 so that when the discharge port 31b of the detergent container 30 is opened, the liquid additive discharged from the detergent container 30 passes through the bracket 35 and passes through the pump 50 to the tub. Inflow.

The valve 33 is slidably provided at the discharge port 31b and is provided between the flow shaft 37 for opening and closing the discharge port 31b with an opening / closing member 37a, and interposed between the flow shaft 37 and the discharge port 31b. The elastic member 38 and the flow shaft 37 and the elastic member 38 includes a valve cap 39 is coupled to the discharge port 31b.

Here, the flow shaft 37 is formed with a plurality of pressing projections 37b at the outer end, so when the hollow shaft 35a pushes the flow shaft 37, the pressing projection 37b is raised while compressing the elastic member 38. The elastic member 38 is compressed by the locking projection 31d formed in the discharge port 31b.

Therefore, when the state in which the fluid shaft 37 is pressed out of the discharge port 31b by the elastic member 38 is maintained, the opening / closing member 37a is in close contact with the inner end of the discharge port 31b to seal the discharge port 31b, and the discharge port When the 31b is inserted into the hole 21 again, the flow shaft 37 is pressed and slides into the discharge port 31b.

At this time, a gap is formed between the opening and closing member 37a and the discharge port 31b, so that the discharge port 31b is opened, thereby supplying the liquid additive.

The bracket 35 is coupled to the hole portion 21 of the storage portions 22 and 24 opposite to the discharge port 31b and has a hollow shaft 35a for pressurizing the flow shaft 37 to be in close contact with the valve cap 39. Since the sealing member 35b is interposed, when the detergent container 30 is seated in the storage units 22 and 24 as described above, the discharge port 31b is inserted into the hole 21, and at this time, the valve cap installed in the discharge port 31b. Since the sealing member 35b is in close contact with the outer wall of the circumferential surface of 39, the liquid additive is prevented from being lost at the interval between the valve cap 39 and the storage portions 22 and 24.

Afterwards, when the user rotates the detergent container 30 and inserts it into the storage parts 22 and 24 again, the hollow shaft 35a pushes the flow shaft 37 into the discharge port 31b, so that the opening / closing member 37a and the discharge port are opened. A gap is formed between the 31b to open the discharge port 31b.

Sensing unit 75 for detecting the water level of the detergent container 30 is installed in the flow path between the detergent container 30 and the pump 50, which is to detect the water level inside the detergent container 30 detachably installed, Since a separate sensor is not required to be installed in the detergent container 30, the manufacturing of the detergent container 30 is facilitated, and the mounting structure of the detergent container 30 is simplified.

The sensing unit 75 includes a sensing pipe 77 provided in the storage block 20 to communicate with the detergent container 30 and communicating with the pump 50, and a water level sensor 79 provided in the sensing pipe 77. Include.

The sensing pipe 77 is elongated in the vertical direction, any one of two hole portions formed at the bottom thereof is connected to the bracket 35, and the other hole portion is connected to the pump 50.

Therefore, when the detergent container 30 is coupled to the storage units 22 and 24, the detergent container 30 is opened by the bracket 35, and the liquid additive supplied from the detergent container 30 passes through the bracket 35 to the sensing pipe 77. Filled in, it is possible to detect the water level inside the sensing pipe 77 by the water level sensor (79).

Thus, the sensing unit 75 can detect the water level inside the detergent container 30, so if the level of the liquid additive stored in the detergent container 30 is lower than or equal to the set value, a signal is sent by the output unit, so that the user can refill the liquid additive. You can do it at the right time.

Here, the water level sensor 79 and the output unit can be easily carried out by those skilled in the art who recognized the technical configuration of the present invention will not be described in detail or description.

The first pump 52 is installed at one side of the first storage unit 22, and the second pump 54 is installed at one side of the second storage unit 24, so that when the first pump 52 is driven, the first detergent tank ( The liquid detergent desalted in 32) is supplied to the tub, and when the second pump 54 is driven, the fabric softener desalted in the second detergent container 34 is supplied to the tub.

The pump 50 includes a main body 53 to which the motor 51 is installed, a cover 57 to which the inlet port 57a and the discharge port 57b into and out of the liquid additive are formed and coupled to the main body 53, and the motor ( The piston 55, which is eccentrically connected to the rotary shaft of 51 and installed in the main body 53 to linearly move, and is provided in the inlet port 57a and the discharge port 57b, is provided in the piston 55 to flow the liquid additive in one direction. A check valve (59).

When the washing operation is started after the liquid detergent is selected, power is applied to the motor 51 so that the rotating shaft of the motor 51 rotates, so that the piston 55 connected by the plurality of links 51a is provided inside the main body 53. Linear movement to the outside.

At this time, the pressure of the sealed space formed by the main body 53 and the cover 57 is variable. When the piston 55 is inserted into the main body 53, the pressure of the closed space is lowered and the liquid additive is added through the suction port 57a. Is introduced into the sealed space, and when the piston 55 protrudes out of the main body 53, the pressure of the sealed space is increased to discharge the introduced liquid additive to the tub side through the discharge port 57b.

A check valve 59 is provided at each of the suction port 57a and the discharge port 57b to prevent the liquid additive from flowing backward. Therefore, the liquid additive flows only from the detergent container 30 in the tub direction.

At the upper end of the first storage unit 72 and the second storage unit 74, a distribution block 76 for selectively supplying the washing water at intervals in each of the storage units 70 is provided, whereby The powder detergent contained in the accommodating part 70 in which the supply is made is supplied to the tub together with the wash water.

Looking at the control method of the detergent washing device for drum washing machine according to an embodiment of the present invention configured as described above are as follows.

FIG. 8 is a block diagram illustrating a detergent washing apparatus for a drum washing machine according to an embodiment of the present invention, and FIG. 9 is a flowchart illustrating a control method of the detergent washing apparatus for a drum washing machine according to an embodiment of the present invention.

1 to 9, the control method of the detergent washing device 100 for a drum washing machine according to an embodiment of the present invention determines the type of laundry additives supplied to the tub according to the operation of the selection key 80 When the determination step (S10) and the liquid additive is selected to drive the pump 50 installed in the storage block 20 to supply the liquid detergent stored in the storage units 22, 24 of the storage block 20 to the tub. The driving step S24 is included.

Determination step (S10) is a method of selecting one type of detergent according to whether one selection key 80 is installed and the operation of the selection key 80, and two selection keys 80 are installed, the user is one of the two There is a method of operating the selection key 80 of, and the former method will be described.

In addition, since the latter method can be easily carried out by those skilled in the art having recognized the technical configuration of the present invention, specific drawings and explanations will be omitted.

When the powder detergent is selected in the determination step (S10) by the above method, the valve of the water supply device 12 is driven to supply the wash water to the distribution block 76, and the distribution block 76 proceeds. The washing water is first supplied to the first accommodating portion 72 at a time interval according to the direction of the washing water supplied to the washing water, and preliminary washing is performed. Will be done.

The wash water supplied to the first storage unit 72 and the second storage unit 74 is supplied to the tub together with the powder detergent to perform the washing operation.

When the liquid detergent is selected in the determination step S10, the first pump 52 is driven a plurality of times at a time interval to perform pre-washing and main washing, and the second pump 54 is driven during the rinsing operation. The fabric softener is supplied to the tub.

At this time, since the driving time of the pump 50 is controlled by the control unit 90, the liquid detergent and the fiber softener in an amount required for one washing operation are supplied and a plurality of times using the liquid additive that is fresh in the detergent container 30. It is possible to perform the washing operation of.

When the operation as described above is performed a number of times, the level of the liquid additive contained in the detergent container 30 is lowered below the set value, so that the level of the detergent container 30 is sensed by the sensing unit 75 and the liquid additive supplement is supplied through the output unit. The signal is sent out.

By this signal, the user separates the detergent container 30 from the storage units 22 and 24, opens the cap 31c installed at the inlet 31a, and replenishes the liquid additive, and then stores the detergent container 30 in the storage unit 22. , The discharge port 31b is inserted into the hole 21 of the storage units 22 and 24, and the sealing member 35b is in close contact with the outer wall of the valve cap 39.

As a result, the gap between the discharge port 31b and the storage portions 22 and 24 is sealed before the discharge port 31b of the detergent container 30 is opened, so that the liquid additive is discharged from the discharge port 31b at the moment when the discharge port 31b is opened. It is possible to suppress the loss at the interval between the reservoirs 22 and 24.

Thereafter, when the user rotates the detergent container 30, the protrusion 66 slides along the inclined portion 64, and the detergent container 30 is lowered, so that the hollow shaft 35a presses the flow shaft 37 while the opening and closing member is pressed. A gap is generated between the 37a and the discharge port 31b.

As described above, when the discharge port 31b is opened, the liquid additive supplied from the detergent container 30 is filled with the liquid additive in the sensing pipe 77 through the bracket 35.

As described above, if the supply of the liquid additive is determined by the user operating the selection key 80 after the coupling of the detergent container 30 is completed, the pump 50 is driven to supply the liquid additive.

According to the technical configuration and the control method as described above, a detergent capable of performing a plurality of washing operations is stored, and when the washing operation is performed, the detergent required for one washing operation can be easily supplied. It is possible to provide a detergent washing apparatus and a control method for a drum washing machine that can be added to select the type of detergent according to the user's taste.

10 is a block diagram showing a detergent washing apparatus for a drum washing machine according to another embodiment of the present invention.

1 to 7, 9, and 10, a detergent washing device for drum washing machine 100 according to another embodiment of the present invention is a storage unit 22, 24 and powder detergent for storing the liquid additive is A storage block 20 having a storage unit 70 to be stored, a pump 50 which is provided in the storage block 20 and communicates with the detergent container 30 to supply the liquid additive, and the storage unit 70. The controller 180 detects whether or not the powder detergent is added, and the controller 90 determines whether the pump 50 is driven and whether the washing water is supplied to the accommodating part 70 according to a signal transmitted from the sensor 180. ).

Thus, when the user inputs the powder detergent into the storage unit 70 before starting the washing operation, the powder detergent is detected by the sensor 180, and when the user starts the washing operation, the driving of the pump 50 does not proceed. Washing water is supplied to the storage unit 70 in a non-state state and the powder detergent and the washing water are supplied to the tub to perform the washing operation.

On the contrary, if the user does not input the powder detergent before starting the washing operation, the powder detergent detected by the sensor 180 does not exist, so the pump 50 is driven in response to the signal of the controller 90 so that the liquid detergent is turned into the tub. The liquid detergent is supplied step by step at intervals, and the prewashing and the main washing are performed, and the fabric softener is supplied during the rinsing operation.

Here, the sensor 180 may be installed a variety of sensors, such as infrared sensors, weight sensors, and the technical configuration of the present invention can be easily changed by those skilled in the art will be omitted specific drawings or description will be omitted. .

In addition, the control method of the detergent washing apparatus for a drum washing machine according to another embodiment of the present invention is different from the method of determining the type of detergent in the determination step (S10) compared to the control method according to an embodiment, Since the driving step S24 and the water supply step S22 which are performed after the type is determined are the same, detailed flowcharts and explanations will be omitted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, the detergent washing apparatus for a drum washing machine has been described as an example, but this is merely illustrative, and the detergent dispensing apparatus of the present invention and a control method thereof may be used for other products other than the detergent washing apparatus for a drum washing machine.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a perspective view showing a drum washing machine equipped with a detergent injection device according to an embodiment of the present invention.

2 is a perspective view showing a detergent washing apparatus for a drum washing machine according to an embodiment of the present invention.

3 is a plan view showing a detergent washing apparatus for a drum washing machine according to an embodiment of the present invention.

Figure 4 is an exploded perspective view showing a detergent container of the detergent injection device for drum washing machine according to an embodiment of the present invention.

Figure 5 is an exploded cross-sectional view showing a detergent container mounting structure of the detergent injection device for drum washing machine according to an embodiment of the present invention.

Figure 6 is a cross-sectional view showing a detergent container mounting structure of the detergent dispenser for drum washing machine according to an embodiment of the present invention.

Figure 7 is an exploded perspective view showing a pump of the detergent injection device for a drum washing machine according to an embodiment of the present invention.

8 is a block diagram showing a detergent washing apparatus for a drum washing machine according to an embodiment of the present invention.

9 is a flowchart illustrating a control method of a detergent washing device for a drum washing machine according to an embodiment of the present invention.

10 is a block diagram showing a detergent washing apparatus for a drum washing machine according to another embodiment of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

20: storage block 30: detergent container

50: pump 60: coupling portion

70: housing 80: selection key

90: control unit

Claims (4)

A storage block having a storage unit for storing a liquid additive; A detergent container detachably provided in the storage unit and provided with an inlet port and an outlet port for desalination of the liquid detergent; A pump provided in the storage block and connected to the detergent container to supply the liquid additive; And A coupling part provided in the storage part and the detergent container so as to be inserted again after the detergent container is seated in the storage part; A valve is installed at the discharge port, and a bracket is provided at the reservoir to open the valve; The valve is slidably provided in the discharge port and is provided with an opening and closing member to open and close the discharge port, an elastic member interposed between the flow shaft and the discharge port, the flow shaft and the elastic member is accommodated Detergent injection device for a drum washing machine comprising a valve cap coupled to the discharge port. The method of claim 1, The coupling portion A coupling groove formed in the storage unit; And Detergent injection device for a drum washing machine characterized in that it comprises a protrusion formed in the detergent container is inserted into the coupling groove. 3. The method of claim 2, Since the inclined portion is formed in the coupling groove part, the detergent container is inserted into the detergent container, characterized in that the detergent container is inserted again into the storage unit when the protrusion is sliding along the inclined portion. The method of claim 3, Detergent injection device for a drum washing machine, characterized in that the sealing member is provided in the hole portion of the storage portion in which the discharge port is inserted.

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