KR20210087649A - Automatic detergent input device of washing machine - Google Patents

Abstract

The present invention relates to an automatic detergent feeding device for a washing machine, which is mounted on a washing machine to automatically supply liquid detergent into a washing tank. According to the present invention, the automatic detergent feeding device for a washing machine comprises: a gearbox unit (20) including a gear electro-motion means (10); a cylinder unit (40) including a piston (30); and a pumping housing unit (50) including a first and a second check valve (CV1, CV2). The gearbox unit (20), the cylinder unit (40), and the pumping housing unit (50) are integrally formed on a case (1). The cylinder unit (40) is arranged between the gearbox unit (20) and the pumping housing unit (50). The pumping housing unit (50) includes a suction chamber (51), a pressure chamber (52), and a discharge chamber (53). The pressure chamber (52) is arranged between the suction chamber (51) and the discharge chamber (53) to form the pumping housing (50) in a straight line shape. A pressurizing chamber (42) of the cylinder unit (40) is arranged on a side of the pressure chamber (52) of the pumping housing unit (50) to minimize the gap (S1) between the pressurizing chamber (42) of the cylinder unit (40) and the pressure chamber (52) of the pumping housing unit (50). The pressurizing chamber (42) and the pressure chamber (52) communicate with each other.

Description

Automatic detergent dispensing device for washing machine {AUTOMATIC DETERGENT INPUT DEVICE OF WASHING MACHINE}

The present invention relates to an automatic detergent dispensing device for washing machines that is installed in a washing machine and automatically supplies liquid detergent into a washing tank, and more particularly, a gearbox unit, a cylinder unit, and a pumping housing unit are integrally formed in a case, The present invention relates to an automatic detergent dispensing device for a washing machine in which a pumping housing is formed such that a suction chamber, a pressure chamber, and a discharge chamber are arranged in a straight line.

A "liquid detergent supply pump" is introduced in Korean Patent No. 10-1320203 (October 14, 2013, registered).

The liquid detergent supply pump may include: a body in which a space of a certain size is formed; Doedoe disposed inside the body portion, an inner space capable of reciprocating with a piston having a packing mounted on one side being inserted is formed, and an air conveying pipe through which compressed or expanded air is conveyed by the reciprocating movement of the piston is directed upward. an air supply part formed in an extended form and having a rotational shaft inserted into the rotational shaft insertion groove of the body at a position on the same axis as the air transport pipe at the lower portion; a driving motor disposed inside the body to rotate the rotating shaft by driving power applied; A rotating shaft fastening groove fitted to the rotating shaft is formed on one side, and a piston fastening portion rotatably fastened to the other side of the piston is formed at a position spaced apart from the rotating shaft fastening groove by a predetermined distance, and the piston rotates together with the rotating shaft. a link member for reciprocating in the inner space of the air supply; and an internal space of a certain size is formed and disposed at an upper position of the piston, the end of the air transport pipe is inserted into the internal space to communicate with the internal space of the air supply unit, and compression or expansion transferred through the air transport pipe It includes a pressure chamber provided with an inlet valve and an outlet valve for introducing or discharging liquid detergent according to the air.

However, since the liquid detergent supply pump has an inlet valve and an outlet valve disposed on one surface of the pressure chamber, the device for supplying liquid detergent cannot be directly connected to the inlet valve of the pressure chamber, so it must be connected through a hose, etc., and the outlet valve In addition, liquid detergent can be discharged into the washing machine through a hose, etc., and since the internal space of the air supply part and the pressure chamber are connected by an air transfer pipe, the pressure delivered to the pressure chamber is lowered, and it is sucked into the pressure chamber at once. and the amount of detergent discharged from the pressure chamber is small.

Accordingly, an object of the present invention is to form a pumping housing such that the gearbox part, the cylinder part, and the pumping housing part are integrally formed in the case, the product can be manufactured compactly, and the suction chamber, the pressure chamber, and the discharge chamber are arranged in a straight line. By doing so, the suction port of the suction chamber can be directly connected to the detergent reservoir, and the discharge port of the discharge chamber can be disposed in the inner direction of the washing box of the washing machine, thereby structurally preventing the loss of pumping pressure for sucking and discharging detergent, By disposing the pressure chamber of the cylinder on the side of the pressure chamber of the pumping housing to minimize the distance between the pressure chamber and the pressure chamber, the loss of pressure transmitted to the pressure chamber can be minimized, so that the piston can perform a reciprocating stroke at one time. An object of the present invention is to provide an automatic detergent dispensing device for washing machines capable of maximizing the amount of detergent discharged from a suction chamber to a pressure chamber.

According to an aspect of the present invention, an automatic detergent dispensing device for a washing machine for achieving the above object is a pumping housing including a gear box unit including a gear transmission means, a cylinder unit including a piston, and first and second check valves. It consists of a part, the gearbox part, the cylinder part, and the pumping housing part are integrally formed in the case, the cylinder part is disposed between the gearbox part and the pumping housing part, and the pumping housing part consists of a suction chamber, a pressure chamber and a discharge chamber, A pressure chamber is disposed between the suction chamber and the discharge chamber, so that the pumping housing is formed in a straight line, and the distance between the pressure chamber of the cylinder part and the pressure chamber of the pumping housing part is minimized so that the pressure chamber of the cylinder part is disposed on the pressure chamber side of the pumping housing part It is disposed in, characterized in that the pressure chamber and the pressure chamber is in communication.

In addition, in the automatic detergent dispensing apparatus for a washing machine according to the present invention, the case is composed of a first case and a second case, and the first case and the second case are combined, so that the gearbox part, the cylinder part, and the pumping housing part are intact. is formed, the motor and the gear transmission means are mounted on the gearbox part, the piston is mounted on the cylinder part, the output gear of the gear transmission means and the piston of the cylinder part are connected by a connecting rod, and a first check valve and a first check valve on the pumping housing In a state in which the second check valve is disposed, the first case and the second case are combined to complete the assembly.

It is characterized in that an elastic grip is formed on the case.

In the gear transmission means, the first gear part of the electric gear is linked to the driving gear mounted on the driving shaft of the motor, the output gear is linked to the second gear part of the electric gear, and one end of the connecting rod is connected to the eccentric shaft of the output gear. and the other end of the connecting rod is connected to the piston.

A magnet is mounted on the output gear, and a Hall IC is disposed on a lower surface of the gearbox disposed under the output gear, so that the Hall IC senses the magnet for each rotation of the output gear.

In the pumping housing part, a suction chamber, a pressure chamber and a discharge chamber are arranged in a line, a pressure chamber is disposed between the suction chamber and the discharge chamber, a first check valve is mounted on the discharge hole of the suction chamber, and the discharge hole of the pressure chamber It is characterized in that the second check valve is mounted on the.

In addition, the pumping housing portion further includes a sealing member for preventing leakage when the suction chamber is mounted.

The sealing member has an “I” cross-sectional shape, an upper horizontal portion and a lower horizontal portion are connected by an intermediate vertical portion, a fitting groove is formed between the upper horizontal portion and the lower horizontal portion, and a sealing protrusion is formed in the intermediate vertical portion characterized by being

Thereby, the automatic detergent dispensing device for washing machine according to the present invention can manufacture a product compactly, can structurally prevent loss of pumping pressure for sucking in and discharging detergent, and being delivered to the pressure chamber of the pumping housing. The loss of pressure can be minimized, so that the amount of detergent discharged from the suction chamber to the pressure chamber at one time during the reciprocating stroke of the piston can be maximized, the assembly is simple, and when components are broken, the first case By separating the and the second case, damaged components can be easily replaced, and the amount of detergent can be adjusted by sensing the reciprocating stroke of the piston.

1 is a perspective view showing an automatic detergent dispensing device for a washing machine according to the present invention.
2 is a perspective view showing a state in which the gear transmission means, the piston, and the check valve are mounted inside the case.
3 and 4 are cross-sectional views for explaining the operation of the automatic detergent dispensing device for a washing machine according to the present invention, and FIG. 4 is an enlarged cross-sectional view of the sealing member.
5 is an exploded perspective view illustrating an automatic detergent dispensing device for a washing machine according to the present invention.
6 is a perspective view showing a gear transmission means.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 to 4 , the automatic detergent dispensing device for a washing machine according to the present invention includes a gear box unit 20 including a gear transmission means 10 , a cylinder unit 40 including a piston 30 , and , composed of a pumping housing part 50 including first and second check valves CV1 and CV2, and a gearbox part 20, a cylinder part 40 and a pumping housing part 50 in the case 1 is integrally formed, the cylinder part 40 is disposed between the gearbox part 20 and the pumping housing part 50 , and the pumping housing part 50 is the suction chamber 51 and the pressure chamber 52 and the discharge Consists of a chamber 53, a pressure chamber 52 is disposed between the suction chamber 51 and the discharge chamber 53, the pumping housing 50 is formed in a straight line, the pressure chamber (40) of the cylinder part (40) The pressure chamber 42 of the cylinder part 40 is moved to the pressure chamber 52 of the pumping housing part 50 so that the distance S1 between the pressure chamber 52 of the pumping housing part 50 and 42 is minimized. It is disposed on the side, and the pressure chamber 42 and the pressure chamber 52 are in communication.

Accordingly, in the automatic detergent dispensing device for washing machine according to the present invention, the gearbox unit 20, the cylinder unit 40, and the pumping housing unit 50 are integrally formed in the case 1, thereby making the product compact. By forming the pumping housing 50 so that the suction chamber 51, the pressure chamber 52, and the discharge chamber 53 are arranged in a straight line, the suction port 51a of the suction chamber 51 is removed from the detergent reservoir (shown). (not shown) can be directly connected, and the discharge port 53a of the discharge chamber 53 can be disposed in the inner direction of the washing tub (not shown) of the washing machine (not shown), so that the detergent is structurally sucked and discharged. Loss of pumping pressure can be prevented, and by disposing the pressure chamber 42 of the cylinder part 40 on the side of the pressure chamber 52 of the pumping housing 50 , between the pressure chamber 42 and the pressure chamber 52 . By minimizing the distance S1 of , it is possible to minimize the loss of pressure transmitted to the pressure chamber 52 , and thus from the suction chamber 51 to the pressure chamber 52 at a time during the reciprocating stroke of the piston 30 . This has the advantage of maximizing the amount of detergent discharged.

2 and 5, in the automatic detergent dispensing device for washing machine according to the present invention, the case 1 is composed of a first case 1a and a second case 1b, and the first case 1a And the second case (1b) is coupled, the gear box unit 20, the cylinder unit 40, and the pumping housing unit 50 are formed in an intact form, the motor (M) and the gear in the gear box unit 20 The transmission means 10 is mounted, the piston 30 is mounted on the cylinder part 40, and the output gear 15 of the gear transmission means 10 and the piston 30 of the cylinder part 40 are connected to the connecting rod ( 31) and in a state in which the first check valve CV1 and the second check valve CV2 are disposed in the pumping housing 50, the first case 1a and the second case 1b are combined, assembly is complete.

An elastic grip 5 is formed on the case 1 and is detachably mounted to the washing machine by the elastic grip 5 .

As described above, the automatic detergent dispensing device for washing machine according to the present invention is easy to assemble, and when the components are damaged, the first case (1a) and the second case (1b) are separated to easily replace the damaged components. There are advantages that can be

Referring to FIG. 6 , in the gear transmission means 10 , the first gear unit 13 of the electric gear 12 is interlocked with the driving gear 11 mounted on the driving shaft (not shown) of the motor M, and , the output gear 15 is interlocked with the second gear unit 14 of the electric gear 12, and one end of the connecting rod 31 is connected to the eccentric shaft 16 of the output gear 15, and the connecting rod ( The other end of 31) is connected to the piston (30).

3 and 4 , a magnet 61 is mounted on the output gear 16 , and a hole IC 62 is formed on the lower surface 21 of the gearbox 20 disposed under the output gear 15 . ) is disposed, so that the hall IC 62 detects the magnet 61 for every one rotation of the output gear 15 .

As the sensing signal of the hall IC 61 is output to a controller (not shown) of a washing machine (not shown), the operation of the motor M is controlled by the controller to adjust the amount of detergent injected.

The configuration of the piston pump in which the piston 30 is mounted on the cylinder part 40 to perform a reciprocating stroke is already well known, and a detailed description thereof will be omitted.

3 and 4 , in the pumping housing unit 50 , a suction chamber 51 , a pressure chamber 52 , and a discharge chamber 52 are arranged in a line, the suction chamber 51 and the discharge chamber 52 . ) between the pressure chamber 53 is disposed, the first check valve (CV1) is mounted in the discharge hole (51b) of the suction chamber (51), the second check in the discharge hole (52b) of the pressure chamber (52) The valve CV2 is mounted.

4 and 5 , the pumping housing 50 further includes a sealing member 70 for preventing water leakage when the suction chamber 51 is mounted.

The sealing member 70 has an "I" cross-sectional shape, the upper horizontal part 71 and the lower horizontal part 72 are connected by an intermediate vertical part 73, and the upper horizontal part 71 and the lower horizontal part A fitting groove 74 is formed between the 72 , and a sealing protrusion 75 is formed in the intermediate vertical portion 73 .

Thereby, the assembly end of the suction chamber 51 can be guided to the fitting groove 74 , the assembling property of the suction chamber 51 is improved, and the sealing protrusion 75 is formed in the intermediate vertical portion 73 . When the assembly end of the suction chamber 51 is fitted into the fitting groove 74 , the sealing protrusion 75 is pressed against the assembly end of the suction chamber 51 to further improve the sealing effect.

The automatic detergent dispensing device for washing machine according to the present invention configured as described above operates as follows.

As shown in FIG. 3, in a state in which the piston 30 is disposed at the rear end of the cylinder part 40, as shown in FIG. 4, the motor (M; see FIG. 2) is driven, the gear transmission means 10 When the piston 30 advances toward the tip of the cylinder 40 by the connecting rod 31 and the positive pressure generated in the pressure chamber 42 of the cylinder unit 40, the pressure chamber ( 52), the first check valve CV1 is closed by the positive pressure, and the second check valve CV2 is opened, so that the detergent in the pressure chamber 52 is discharged to the outside through the discharge chamber 53 .

Then, in the state of FIG. 4 in which the piston 30 is disposed at the front end of the cylinder 40, by driving the motor M, as shown in FIG. 3 , the gear transmission means 10 and the connecting rod 31 When the piston 30 moves backward to the rear end of the cylinder 400 by the , the negative pressure generated in the pressure chamber 42 of the cylinder part 40 is transferred to the pressure chamber 52 of the pumping housing part 50, a negative As the first check valve CV1 is opened and the second check valve CV2 is closed by the pressure, the detergent in the suction chamber 51 is supplied to the pressure chamber 52 .

At this time, the suction chamber 51 generates a negative pressure as much as the detergent is discharged, so that the detergent in the detergent container is sucked into the suction chamber 51 .

As described above, in the automatic detergent dispensing apparatus for washing machine according to the present invention according to the present invention, detergent is discharged from the suction chamber 51 of the pumping housing 50 through the pressure chamber 52 by the reciprocating stroke of the piston 30. 53), and quantitatively discharged from the discharge chamber 53 to the washing tub of the washing machine.

10: gear transmission means 20: gear box unit
30: piston 40: cylinder part
50: pumping housing unit

Claims (7)

A gearbox unit 20 including a gear transmission means 10, a cylinder unit 40 including a piston 30, and a pumping housing unit including first and second check valves CV1 and CV2 ( 50), and the gearbox unit 20, the cylinder unit 40, and the pumping housing unit 50 are integrally formed in the case 1, and between the gearbox unit 20 and the pumping housing unit 50 The cylinder part 40 is disposed on the , and the pumping housing part 50 is composed of a suction chamber 51 , a pressure chamber 52 , and a discharge chamber 53 , and is located between the suction chamber 51 and the discharge chamber 53 . The pressure chamber 52 is disposed in the pump housing 50 is formed in a straight line, the distance between the pressure chamber 42 of the cylinder part 40 and the pressure chamber 52 of the pumping housing part 50 (S1) ) is minimized, the pressure chamber 42 of the cylinder part 40 is disposed on the side of the pressure chamber 52 of the pumping housing part 50, and the pressure chamber 42 and the pressure chamber 52 communicate with each other. Automatic detergent dispensing device for washing machine, characterized in that.
The method of claim 1,
The case (1) is composed of a first case (1a) and a second case (1b), the first case (1a) and the second case (1b) are coupled, the gearbox unit 20 and the cylinder unit ( 40) and the pumping housing part 50 are formed in an intact form, the motor M and the gear transmission means 10 are mounted on the gearbox part 20, and the piston 30 is mounted on the cylinder part 40 And, the output gear 15 of the gear transmission means 10 and the piston 30 of the cylinder part 40 are connected by a connecting rod 31, and the first check valve CV1 in the pumping housing 50 and In a state in which the second check valve (CV2) is disposed, the first case (1a) and the second case (1b) are combined to complete the assembly.
The method of claim 1,
An automatic detergent dispensing device for a washing machine, characterized in that an elastic grip (5) is formed on the case (1).
The method of claim 1,
In the gear transmission means 10, the first gear part 13 of the electric gear 12 is interlocked with the driving gear 11 mounted on the drive shaft of the motor M, and the second gear part of the electric gear 12 The output gear 15 is interlocked with 14 , one end of the connecting rod 31 is connected to the eccentric shaft 16 of the output gear 15 , and the other end of the connecting rod 31 is connected to the piston 30 . Automatic detergent dispensing device for washing machine, characterized in that it becomes.
5. The method of claim 4,
A magnet 61 is mounted on the output gear 16 , and a hole IC 62 is disposed on the lower surface 21 of the gearbox 20 disposed under the output gear 15 , the output gear 15 . ), the hall IC (62) detects the magnet (61) for each rotation, automatic detergent dispensing device for washing machine, characterized in that.
The method of claim 1,
In the pumping housing unit 50 , a suction chamber 51 , a pressure chamber 52 , and a discharge chamber 52 are arranged in a line, and the pressure chamber 53 is disposed between the suction chamber 51 and the discharge chamber 52 . and a first check valve (CV1) is mounted on the discharge hole (51b) of the suction chamber (51), and a second check valve (CV2) is mounted on the discharge hole (52b) of the pressure chamber (52) Automatic detergent dispensing device for washing machine.
The method of claim 1,
The pumping housing part 50 further includes a sealing member 70 for preventing leakage when the suction chamber 51 is mounted,
The sealing member 70 has an "I" cross-sectional shape, the upper horizontal part 71 and the lower horizontal part 72 are connected by an intermediate vertical part 73, and the upper horizontal part 71 and the lower horizontal part An automatic detergent dispensing device for washing machine, characterized in that a fitting groove (74) is formed between (72) and a sealing protrusion (75) is formed in the middle vertical portion (73).

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