JPS6136959B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detergent dispensing device for a washing machine, etc., which is capable of supplying a predetermined amount of detergent liquid to a washing tub.

An example of a conventional detergent dispensing device of this type is one in which a detergent storage section stores one batch of detergent solution and the detergent solution can be automatically dispensed into the washing tub in response to a command from a washing timer. This method has disadvantages in that manual work is required to store one batch of detergent in the detergent storage section each time the washing machine is operated, and the amount of detergent added becomes inaccurate.

The present invention has been made to eliminate the above-mentioned drawbacks, and its purpose is to store detergent solution for multiple times in advance in a detergent storage tank, and to discharge the required amount of detergent solution from the tank in response to a timing signal. This eliminates the need for manual work associated with adding detergent solution, and allows the timing signal to be obtained from a dedicated auxiliary timer that is separate from the laundry timer, making it possible to ensure accuracy in the amount of detergent added. To provide a detergent dispensing device for a washing machine or the like which can automatically select the amount of detergent to be dispensed in accordance with the water level of a washing tub.

Hereinafter, the content of the present invention will be specifically explained using examples. In the first embodiment shown in FIGS. 1 to 5, reference numeral 1 denotes an outer box of a washing machine having an operation box 2 on its upper part. A rotating tank 4 is provided as a tank and a dehydration tank.
A detergent dispenser 5 is disposed inside the operation box 2 of this washing machine. To explain this in detail below, 6 is the operation box 2
The frame is fixed with screws to the back plate of the
This frame 6 has a cylinder 7 with both ends open and in a substantially horizontal state, and a circular ring body 10 with a discharge chamber 9 inside attached to a flange 8 formed at one end of the cylinder 7 through a sealing member 11. the screw 12
It is connected to the frame 6 by. Said ring body 10
An opening 10a having a relatively small diameter is formed in the end wall of the discharge chamber 9, and one open end of an inflow pipe body 13 located in the discharge chamber 9 is connected to this opening 10a, and the other open end serves as an inflow port 14. This inlet port 14 is connected to the cylinder 7
It is located slightly inward from the open end having the flange 8 and has an outer diameter smaller than that of the cylinder 7, forming a discharge passage 9a communicating with the discharge chamber 9 around it. The fluid passage area of the discharge passage 9a is set to a value sufficiently larger than that of the inflow pipe body 13. 15a is the opening 1 of the ring body 10
A first connecting mouth body 15b integrally extends from the part where 0a is formed so as to communicate therewith, and 15b is the ring body 1.
This is a second connecting port extending from the side of the connecting port 15b, and this connecting port 15b communicates with the discharge chamber 9. 16 is an auxiliary motor fixed to the frame 6, which has a rotation speed of about 10 revolutions per minute, and its drive shaft 1
7 is connected to the center of a disc-shaped actuating body 18, and one end of a link 20 is rotatably connected to the eccentric position of the actuating body 18 via a stepped screw 19. 21
3 is a guide groove formed in the frame 6 so as to be oriented along the longitudinal direction of the cylinder 7. A stepped screw 22 is inserted into this from the lower side in FIG. 21, a through hole 20a formed at the other end of the link 20 is loosely inserted into the penetrating protruding portion of the shaft portion 22a, and an L-shape is inserted into the threaded portion of the stepped screw 22. One end of the connecting plate 23 is connected by screwing. Reference numeral 24 denotes a piston made of rubber inserted into the cylinder 7, and the other end of the piston rod 24a, which has one end connected thereto and protrudes from inside the cylinder 7, is connected to the other end of the connecting plate 23. Reference numeral 25 denotes a detergent storage tank which is removably installed in the tank receiving opening 2b formed in the operation panel 2a of the operation box 2, and has a liquid filling port 27 closed by a removable cap 26 on its upper wall. In addition, a liquid outlet portion 28 is provided on the lower wall. The detergent storage tank 25 contains detergent liquid (in this embodiment, soap liquid) for multiple times. Now, the liquid outlet part 28 and the first connection port 15a are connected by a hose 29, and the detergent supply port 30 and the Second connection mouth body 15
b is connected by a hose 31.

The general operation of the detergent dispenser 5 having the above structure is as follows. That is, when the auxiliary motor 16 is energized and driven, the actuating body 18 rotates, so the link 20 connected at a position eccentric from the center of rotation of the actuating body 18 swings around the stepped screw 22. However, the stepped screw 22, which is the swinging fulcrum, moves in a straight line along the guide groove 21 together with the connecting plate 23.
As a result, the piston 24 receives the linear movement of the stepped screw 22 via the connecting plate 23 and the piston rod 24a, and is reciprocated within the cylinder 7. Now, before the reciprocating movement as described above is performed, in a state where the piston 24 is located at the starting point on the right side in FIG. The detergent liquid in the detergent storage tank 25 passes through the hose 29 and the first connection port 15a due to the head and fills the inside of the inflow pipe body 13. In this state, the auxiliary motor 16 is closed. The piston 24 is driven to the third position.
From the position of the solid line in the figure to the position of the two-dot chain line, that is, the arrow 32 is moved by one stroke shown as distance L1.
When the piston 24 is moved in the direction opposite to the arrow 32, the detergent solution in the cylinder 7 is filled in the cylinder 7 as a unit amount with the detergent solution for that stroke. Since the fluid passage area of the inflow pipe body 13 is significantly larger than that of the inflow pipe body 13, it is press-fitted into the discharge chamber 9 through the discharge passage 9a, and from there, a unit amount of detergent liquid is transferred to the second connection port. The detergent is introduced into the rotating tank 4 via the detergent body 15b, the hose 31 and the detergent supply port body 30,
Then, the piston 24 closes the inlet portion 14 and the inlet of the discharge passage 9a while filling the inflow pipe body 13 with the detergent liquid. When the piston 24 is reciprocated by the auxiliary motor 16 in this manner, a unit amount of detergent liquid depending on one stroke of the piston 24 is thrown into the rotating tank 4 for each reciprocating movement.

Next, a control circuit for controlling the auxiliary motor 16 will be explained with reference to FIG. That is, in FIG. 4, 33 and 34 are bus bars to which AC power is supplied constantly or during the washing process of the washing machine, 35 is a selection circuit, and 36 is provided separately from a washing timer that controls each process of the washing machine. An auxiliary timer 37 dedicated to the detergent dispenser 5 is a relay circuit that causes the auxiliary timer 36 to perform one cycle timing operation. 38 is a group of water level setting interlocking switches, which are high water level switches 38 that are closed when the water level in the rotating tank 4 is set to high water level, medium water level, and low water level, respectively.
a, middle water level switch 38b and low water level switch 3
Consists of 8c. The auxiliary timer 36 includes a timer motor 39, a main cam switch 40 which is opened and closed by the timer motor 39, and a first cam switch 41 and a first cam switch 41 for dispensing detergent, each of which is set to a different operating time length (in this embodiment, a closing time length). Second cam switch 4
2. It consists of a third cam switch 43. This auxiliary timer 36 has one cycle of timing operation.
The closing time of each main cam switch 40, first cam switch 41, second cam switch 42, and third cam switch 43 is predetermined to be 50 minutes, and the closing time of each main cam switch 40, first cam switch 41, second cam switch 42, and third cam switch 43 is determined as shown by the hatched area in FIG. ing. In Figure 5, T1 is 10 seconds and T2 is 20 seconds.
seconds, T3 is 24 seconds, T4 is 30 seconds, T5 is 36 seconds, T6
is 40 seconds, T7 is 50 seconds, and T8 is 55 seconds. By setting such a time interval, the reciprocating movement of the piston 24 is started from the solid line position in FIG. 3 and stopped again at this position. Next, to explain the connection relationship, one end of the main cam switch 40 is connected to one bus bar 33, and the other end is connected to a conductor 44a, a detergent injection command switch 45 that is manually closed for a short time, a conductor 44b, and a timer motor 39. It is connected to the other bus bar 34 via. 4
6 is the first relay, which is connected to the conductor 44a and the bus bar 3.
A second relay 47 and a relay switch 47a attached thereto are connected between and in parallel with this.
The movable contact piece c of the relay switch 48 attached to the first relay 46 is further connected to the conducting wire 44b. In this relay switch 48, one fixed contact piece b is connected to the bus bar 33, and the other fixed contact piece a is connected to a common connection point between the second relay 47 and the relay switch 47a. In the selection circuit 35, a high water level switch 38a and a first cam switch 41 are connected between the bus bar 33 and the conductor 49.
A series circuit between the intermediate water level switch 38b and the second cam switch 42, and a series circuit between the low water level switch 38c and the third cam switch 43 are connected in parallel, respectively, and the conductive wire 49 is connected to the auxiliary motor 16. It is connected to the bus bar 34 via.

In this configuration, the auxiliary motor 16 causes the piston 24 to reciprocate six times when it is energized at T5 for 36 seconds by the first cam switch 41, and five times when it is similarly energized at T4 for 30 seconds by the second cam switch 42. Rotate the third cam switch 4
3, it is made to repeat four times when the T3 current is applied for 24 seconds.

Next, the operation of the above configuration will be explained. That is, when the auxiliary timer 36 is in the timer-off position OFF, the main cam switch 40 is closed as shown in FIG. Bus line 3
3. The relay switch 4 is energized through the main cam switch 40 and the conductor 44a and becomes operational.
8 is in the on state between contact pieces (ca).
On the other hand, if a water level switch (not shown) is set to a high water level depending on the amount of laundry in order to perform a washing operation in the rotary tub 4, the high water level switch 38a is closed in conjunction with the setting, and the first water level switch 38a is closed. The cam switch 41 is now in the selected state. In this state, when the detergent injection command switch 45 is temporarily closed manually at the same time as or prior to the start of the washing operation, the main cam switch 40, the conductor 44a, and the detergent injection command switch 45 are connected to the conductor 44b.
The timer motor 39 is started and the relay switch 4 is connected from the conductor 44b.
The second relay 47 is connected between the contact pieces (c-a) of 8.
is energized and activated, and its relay switch 47a
Since the relay switch 47a is closed, the second relay 47 is held in a self-holding state by the relay switch 47a, and the timer motor 39 is connected to the relay switch 47 from the conductor 44a even if the detergent injection command switch 45 automatically returns.
energization continues between the contact pieces (a and c) of the relay switch 48 and the relay switch 48. In this way, the timer motor 39 is placed in the timer off position.
When the engine is started in the OFF state and reaches time T0 five seconds later, the first cam switch 41 to the third cam switch 43 are simultaneously closed, and the main cam switch 40 continues to be closed. On the other hand, since only the first cam switch 41 is selected in advance by the high water level switch 38a, the auxiliary motor 16 is energized and starts driving at time T0 via the high water level switch 38a and the first cam switch 41. Since the auxiliary motor 16 is energized by the first cam switch 41 until time T5, the piston 24 reciprocates six times during this period, and six times the unit amount of detergent liquid is poured into the rotary tank 4. Then, when time T5 is reached, the first cam switch 41 is opened and the auxiliary motor 16 is stopped. After this, when time T6 is reached, the main cam switch 40 is opened, so the conductor 4
4a becomes power-off, the first relay 46 and the second relay 47 both return to their original state, and switch the relay switch 4.
7a is turned off, and the relay switch 48 is turned off between contact pieces (ca) and turned on between contact pieces (c and b). However, the timer motor 39
Current is continuously applied between the contacts (b and c) of the relay switch 48 to continue the timing operation. After this, time T8, that is, the timer off position
When the OFF state is reached, the main cam switch 40 is closed again, so the first relay 46 is energized, and the relay switch 48 is turned on between contacts (ca) and OFF between contacts (c and b). Therefore, when the timer motor 39 is cut off and the auxiliary timer 36 reaches the timer off position OFF, one cycle of timing operation is completed. Based on the same operation as above, when the middle water level is set, the middle water level switch 3
8b is closed, the second cam switch 42 is selected, and when the water level is set to low, the third cam switch 43 is selected by closing the low water level switch 38c, and these drive the auxiliary motors 16 for the respective set times. Therefore, when the medium water level is set, five times the unit amount of detergent liquid is added, and when the low water level is set, four times the unit amount of detergent liquid is added. Therefore, according to this detergent dispenser dispensing device, the following effects can be obtained. In other words, the tank 2 for multiple cleanings is prepared in advance.
Since the detergent solution contained in the detergent dispenser 5 is automatically dispensed in an amount according to the water level (water amount) set by the detergent dispenser 5, manual work to measure the amount of detergent solution to be introduced is unnecessary. The amount of detergent solution dispensed for one time is determined by the number of reciprocating movements of the piston 24 in the detergent dispenser 5, and the number of reciprocating movements is determined by the operating time of the first cam switch 41, the second cam switch 42, and the third cam switch 43. , that is, auxiliary timer 3
It is characterized in that it is determined by the timing signal from 6. In this embodiment, each reciprocating movement of the piston is performed for a very short time of 6 seconds, but this short time is obtained not from a washing timer but from a dedicated auxiliary timer 36, so it is relatively short. It can be obtained accurately and the amount of detergent solution added can also be accurate. In this regard, since the laundry timer that controls processes such as washing and rinsing controls the process in units of about 30 seconds, it is not possible to obtain timing signals in units of about 6 seconds. If the amount of detergent solution is controlled by the timing signal, the amount of detergent solution will be roughly determined and it will not be possible to obtain an appropriate amount of detergent solution depending on the amount of water. The above configuration according to the present invention does not have the above disadvantages.

Next, second to fourth embodiments of the detergent dispenser controlled by the control circuit shown in FIG. 4 will be explained, and the same parts as in FIGS. 1 to 3 will be described using the same reference numerals. That's it. In the second embodiment shown in FIG. 6, 50 is a cylinder supported by a frame 51 by appropriate means, and is covered with a lid 53 having a discharge port 52 connected to a hose 31 at one open end. At the same time, a lid body 55 through which the piston rod 24a is slidably inserted through the seal member 54 is attached to the other open end,
A suction port 56 connected to the hose 29 is formed on the side of the lid 55 . The cylinder 50
An annular piston 58 is connected to the piston rod 24a via a connecting member 57 and has a liquid flow section 58a in the center thereof, and a side of the liquid flow section 58a of the piston 58 facing the discharge port 52 is provided therein. A check valve 59 is disposed at. Reference numeral 60 denotes a shaft that is inserted into the guide groove 21 formed in the frame 51 in a manner that prevents it from coming out, and the link 20 and the connecting plate 23 are inserted into this shaft.
The right end in FIG. 6 is pivoted. In the detergent dispenser 61 configured in this way, the auxiliary motor 1
When the piston 6 is driven, the piston 58 reciprocates as in the case of the first embodiment, but one stroke is within the range indicated by L2. The stopping position of the piston 58 is the position where the left end surface in FIG. 6 reaches the position A shown in the figure, and at this position the auxiliary motor 16 starts driving, thereby causing the piston 58 to move to the right in FIG. When the detergent liquid is moved to the right side of the piston 58 in the cylinder 50, it is moved to the left side via the liquid flow portion 58a and the check valve 59, and the piston 58 is moved to the B position in FIG. When the detergent liquid is moved in the opposite direction to the left in the drawing after reaching the cylinder 50, the check valve 59 closes, so that the unit amount of detergent liquid in the section (A-B) in the cylinder 50 is discharged from the discharge port 52, and the detergent liquid is further discharged from the hose 31. The detergent is fed into the rotating tank 4 through the detergent supply port 30. At the same time, the detergent liquid in the detergent storage tank 25 is sucked into the cylinder 50 via the liquid outlet section 28, the hose 29, and the suction port section 56. In this way, the detergent liquid is transferred to the piston 5.
A predetermined amount is repeatedly added in a unit amount for each reciprocating movement of 8.

In a detergent dispenser 62 shown as a third embodiment in FIGS. 7 and 8, 63 is a cylinder, and an opening formed at one end of the cylinder is connected to a frame 65 via a support member 64 by screwing. A guide cylinder part 68 is formed in the center of the support member 64, into which a hollow piston rod 67 with a liquid flow part 66 is slidably inserted in a liquid-tight manner, and the position where this guide cylinder part 68 is formed is formed. An air inlet/outlet 69 is formed around the periphery. A small-diameter portion 70 is formed at the other end of the cylinder 63, and an inlet portion 71 to which the hose 29 is connected is formed on the end wall of the small-diameter portion 70. A check valve 7 housed in a valve case 72 is shown in FIG.
3 are installed. Reference numeral 74 designates an annular piston disposed within the cylinder 63, which is fixed to the outer periphery of the left end of the piston rod 67 as shown in the figure, and the liquid is drawn out from the guide cylinder portion 68 of the piston rod 67 at the right end in the figure. One end of an L-shaped connecting tube body 75 communicating with the flow path 66 is connected, and the hose 31 is connected to the other end of this connecting tube body 75. Reference numeral 76 denotes a cam rotated by the auxiliary motor 16. A cam following portion 77 that slides following the outer periphery of the cam 76 is formed at the bent portion of the connecting tube body 75. A compression coil spring 78 is interposed between the inner end surface of the small-diameter portion 70 and the left end surface of the piston 74 in the drawing, and is biased in a direction to constantly press the outer periphery of the piston 74 .

In such a detergent dispenser 62, when the auxiliary motor 16 is stopped, the piston 74 is moved as shown in FIG.
is at the left end, and the check valve 73 is closed by its own returning force to some extent. In this state, when the auxiliary motor 16 starts to drive and the cam 76 starts to rotate in the direction of the arrow 79, the piston 74 is moved into the seventh position integrally with the piston rod 67 and the connecting pipe body 75 due to the spring force of the compression coil spring 78. Moved to the right in the figure. Then, the pressure in the part to the left of the piston 74 in the cylinder 63 decreases, so
Due to the pressure drop and head difference, the detergent liquid in the detergent storage tank 25 flows into this part through the liquid outlet part 28, the hose 29, the suction port part 71, and the check valve 73.
When the inflow occurs as shown by the arrow 80 in the figure, and the piston 74 moves from the position shown in FIG. When the valve 73 is closed, the detergent liquid in the left portion is transferred to the piston rod 6 as the piston 74 moves to the left.
The liquid flows into the liquid flow portion 66 of No. 7 from the left end side as shown by the arrow 81 in FIG.
A unit amount is put into the rotary tank 4 through 0.

In the detergent dispenser 82 of the fourth embodiment shown in FIG. 9, 83 is a bellows with both ends open, 84a is a support plate fixed to the frame 84 with screws, and 85 is a connecting mouth body. The open end peripheral edge of the bellows 85 and one open end peripheral edge of the bellows 83 are fixed to the support plate 84a with screws in a butted state, and the bellows 85 is oriented in opposite directions. A suction port 86 and a discharge port 87 are formed. Guide rods 88 and 89 are connected between the support plate 84a and the frame 84 so as to be parallel to the expansion and contraction direction of the bellows 83, and a plate-shaped actuating member 90 is slid onto these guide rods 88 and 89. The other open end of the bellows 83 is connected to the operating member 90 in a closed state by screwing. 91 is auxiliary motor 1
The cam follower part 91 slides on the outer periphery of the cam 92 rotated by the cam 92, and is integrally provided on the outer surface side of the actuating member 90, and the cam follower part 91 is brought into pressure contact with the outer periphery of the cam 92. Compression coil springs 93, 94 are provided on the guide rods 88, 89. On the other hand, the suction port 86 is connected to the first check valve 95.
The discharge port 87 is connected to the hose 31 through a valve case 98 having a second check valve 97.

In the detergent dispenser 82 configured as described above, assuming that the bellows 83 is filled with detergent liquid due to the completion of the previous dispensing operation, in this state the auxiliary motor 1
6 causes the cam 92 to start rotating in the direction of arrow 99 in FIG. The bellows 83 is compressed and the first check valve 95 is closed, contrary to the illustrated state, and the second check valve 97 is opened as shown by the two-dot chain line. Therefore, the detergent liquid in the bellows 83 flows through the discharge port 87,
Valve case 98, hose 31 and detergent supply port body 30
A unit amount is put into the rotary tank 4 via. Thereafter, as the actuating member 90 begins to move to the right in the figure in accordance with the rotation of the cam 92, the bellows 83 also gradually extends, the second check valve 97 closes, and the first check valve 95 opens. Since the detergent liquid in the detergent storage tank 75 is
It is sucked into the bellows 83 through the suction port 86, and is thrown into the rotating tank 4 when the bellows 83 is compressed next time. Incidentally, the detergent solution to be added in the present invention includes not only the soap solution in the laundry treatment agent but also finishing agents, bleaching agents, and the like.

As described in detail above, the present invention includes a detergent storage tank, an auxiliary motor, and a unit of detergent liquid transferred from the detergent storage tank to the washing tub during one reciprocating movement by receiving reciprocating displacement from the auxiliary motor. a detergent dispenser for dispensing the amount of detergent, an auxiliary timer including a timer motor and first and second cam switches set to different operating time lengths and opened and closed by the timer motor, a detergent dispensing command switch, and a detergent dispensing command switch. a relay circuit having a relay that is self-held by the operation of a switch and starts the auxiliary timer from a stop position, and a relay circuit that performs one cycle timing operation until the auxiliary timer reaches the stop position again; a selection circuit that selects either the first or second cam switch according to the water level setting and drives the auxiliary motor for a period corresponding to the time length of the auxiliary motor by the selected cam switch; The feature is that the number of injections of a unit amount is made to depend on the operating time length of the selected cam switch, and according to this structure, detergent liquid for many times is stored in advance in the detergent storage tank. Since the required amount of detergent liquid is discharged from the tank according to a timing signal, there is no need for manual work associated with adding the detergent liquid, and the timing signal is provided separately from the washing timer. Since the amount of detergent dispensed is determined in a short period of time from a dedicated auxiliary timer, it is possible to ensure the accuracy of the amount of detergent added. Moreover, the amount of detergent dispensed is automatically adjusted to match the water level in the washing tub. It can be selected and has many effects.

[Brief explanation of the drawing]

1 to 5 relate to a first embodiment of the present invention, and FIG. 1 is a longitudinal sectional side view of the main part of the washing machine;
Fig. 2 is a front view of the detergent dispenser, Fig. 3 is a cross-sectional view along the line - in Fig. 2, Figs. 4 and 5 are a wiring diagram and a time chart of the control circuit, respectively. 6 is a sectional view of the detergent dispenser according to the second embodiment, FIGS. 7 and 8 are sectional views showing the detergent dispenser according to the third embodiment in different operating states, and FIG.
The figure is a sectional view showing a detergent dispenser in a fourth embodiment. In the figure, 4 is a rotating tub (washing tub), 5 is a detergent dispenser, 7 is a cylinder, 9 is a discharge chamber, 9a is a discharge passage, 13 is an inflow pipe body, 14 is an inflow port, 16 is an auxiliary motor, 18 20 is an operating body, 20 is a link, 21 is a guide groove, 24 is a piston, 24a is a piston rod, 25 is a detergent storage tank, 30 is a detergent supply port body, 35 is a selection circuit, 34 is an auxiliary timer, 37
is a relay circuit, 38a is a high water level switch, 38b
is the middle water level switch, 38c is the low water level switch, 3
9 is a timer motor, 40 is a main cam switch, 4
1 is a first cam switch, 42 is a second cam switch, 43 is a third cam switch, 45 is a detergent injection command switch, 4 and 6 are first relays, 47 is a second relay, 47a and 48 are relay switches ,
50 is a cylinder, 52 is a discharge port, 56 is an inlet, 58a is a liquid flow part, 58 is a piston, 59 is a check valve, 61 and 62 are detergent dispensers, 63 is a cylinder, 66 is a liquid flow part, 67 is piston rod, 6
9 is an air inlet/outlet, 71 is an inlet port, 73 is a check valve, 74 is a piston, 76 is a cam, 77 is a cam follower, 82 is a detergent dispenser, 83 is a bellows, 85
86 is an inlet port, 87 is a discharge port,
88, 89 are guide rods, 90 is an operating member, 91 is a cam follower, 92 is a cam, 95 is a first check valve, 9
7 is a second check valve.

Claims (1)

[Scope of Claims] 1. A detergent storage tank, an auxiliary motor, and a unit amount of detergent liquid from the detergent storage tank injected into the washing tub during one reciprocating motion by receiving reciprocating displacement from the auxiliary motor. A detergent dosing device, an auxiliary timer including a timer motor and first and second cam switches set to different operating time lengths and opened and closed by the timer motor, a detergent dosing command switch, and this detergent dosing command switch. a relay circuit having a relay that is self-held and starts the auxiliary timer from the OFF position by the operation of the auxiliary timer, and causes the auxiliary timer to time the auxiliary timer for one cycle until it reaches the OFF position again; and a water level in the washing tub. a selection circuit that selects either the first or second cam switch according to the setting and drives the auxiliary motor for a period corresponding to the time length of the auxiliary motor by the selected cam switch; A detergent dispenser for a washing machine or the like, wherein the number of times the detergent dispenser is dispensed depends on the operating time length of the selected cam switch. 2. The detergent dispenser includes a cylinder having an inlet port communicating with a detergent storage tank at one end, and a cylinder formed around the inlet port of the cylinder to communicate with the washing tub, and having a fluid passage area connected to the inlet port. and a piston that is provided in the cylinder so as to be reciprocated by an auxiliary motor and opens and closes the inflow port and the discharge passage at the same time. A detergent charging device for a washing machine or the like according to claim 1. 3. The detergent dispenser includes a cylinder having one end communicated with the washing tub and the other end communicating with the detergent storage tank, and a piston formed in an annular shape having a liquid drop passage and reciprocated within the cylinder by an auxiliary motor. The washing machine according to claim 1, further comprising a check valve provided on the piston and closing the liquid flow passage when the piston moves toward one end of the cylinder. Detergent dosing device for machines, etc. 4. The detergent dispenser includes a cylinder having an air inlet/outlet at one end and an inlet port communicating with a detergent storage tank at the other end, a piston provided in the cylinder, and one end connected to the inlet of the cylinder. a hollow piston rod connected to the piston so as to communicate with the interior of the side having the mouth and the other end communicating with the washing tub; a means for reciprocating the piston rod by an auxiliary motor; 2. The detergent dispenser for a washing machine or the like according to claim 1, further comprising a check valve that is closed when the piston is moved toward the suction port. 5. The detergent dispenser includes a bellows with one end open and expanded and contracted by an auxiliary motor, a connecting mouth body provided at the open portion of the one end of the bellows, and a connecting mouth body provided at each of the connecting mouth bodies and connected to the bellows. A suction port communicates with the detergent storage tank via a first check valve that opens when the bellows is extended, and a discharge port that communicates with the washing tub via a second check valve that opens when the bellows is compressed. A detergent dispenser for a washing machine or the like according to claim 1, characterized in that the detergent dispenser is comprised of a part.