KR20180086661A - Drain motor - Google Patents

Abstract

The present disclosure provides a drain motor for convenient assembly and compact manufacturing of in-housing parts. The drain motor according to an embodiment includes a lever coupled to a washing machine drain valve, a drive unit including a drive motor for driving the lever, a power terminal for connection to an external connector, a switch interrupting power supplied to the drive unit, a housing accommodating therein at least a part of each of the lever, the drive unit, the power terminal, and the switch, a stop plate disposed inside the housing and holding and supporting the drive motor, the power terminal, and the switch so that a terminal of the drive motor, the power terminal, and a terminal of the switch are oriented in one direction, and a circuit board disposed in the housing to be in contact with the terminal of the drive motor, the power terminal, and the terminal of the switch.

Description

DRAIN MOTOR

The present disclosure relates to a drain motor for opening and closing a drain valve of a washing machine.

Drain motors for opening and closing drain valves of a washing machine are known in the art. For example, Korean Patent Registration No. 10-0781252 proposes an example of a drain motor provided in a fully automatic washer. The drain motor according to the document includes a housing and a lever at least a portion of which is received in the housing so as to be linearly movable. The drain motor is installed adjacent to the drain valve in the lower portion of the washing machine of the washing machine. The lever coupled to the drain valve is driven to be drawn into the housing or drawn out to the housing according to the setting conditions of the washing machine related to washing, rinsing and dewatering, Respectively.

Korean Patent Registration No. 10-0781252

The drain motor described above has a structure in which various components for driving the lever are assembled in the housing, so that the assembling process of the drain motor is complicated and prolonged, which lowers manufacturing productivity of the drain motor. In addition, since various parts are disposed in the housing of the drain motor, it is difficult to make the drain motor compact.

Disclosure of the Invention The present disclosure is directed to solving the problems of the conventional drainage motor described above, and it provides a drainage motor that can easily assemble components provided in a housing and can be manufactured compactly.

The present disclosure provides a drain motor for opening and closing a drain valve of a washing machine. The drain motor according to the exemplary embodiment includes a lever coupled to the drain valve, a driving unit including a driving motor for driving the lever, a power terminal for being connected to the external connector, A housing for accommodating at least a part of each of the lever, the driving unit, the power supply terminal, and the switch; and a terminal disposed inside the housing, the terminal of the driving motor, the power terminal, A stop plate holding the drive motor, the power supply terminal, and the switch so as to face one direction; and a circuit board disposed inside the housing so as to be in contact with the terminals of the drive motor, the power supply terminal, and the switch do.

In one embodiment, the stop plate holds the circuit board in position so that the terminals of the drive motor, the power terminal, and the switch are electrically contacted to the circuit board.

In one embodiment, the stop plate includes a positioning pin for fixing the circuit board in place, and a hole corresponding to the positioning pin is formed on the circuit board.

In one embodiment, the driving unit further includes a gear assembly for transmitting a driving force of the driving motor to the lever, and a solenoid valve electrically connected to the circuit board and interrupting rotation of the gear assembly.

In one embodiment, the stop plate holds the solenoid valve such that a terminal of the solenoid valve faces one direction.

In one embodiment, the stop plate includes a first accommodating portion into which the solenoid valve is inserted, a second accommodating portion into which the drive motor is inserted, a third accommodating portion into which the power supply terminal is inserted, And the second to fourth accommodating portions are disposed around the first accommodating portion.

In one embodiment, at least the reduction gears of the gear assembly relative to the stop plate are disposed on a side opposite to a side where the solenoid valve is disposed.

In one embodiment, the stop plate further includes a rail portion disposed between the first accommodating portion and the fourth accommodating portion and guiding the sliding linear movement of the lever.

In one embodiment, the stop plate is formed with a hole adjacent to the fourth housing portion, through which the output gear of the gear assembly is rotatably fitted.

In one embodiment, the power supply terminal includes a middle portion and a first extending portion and a second extending portion that extend in parallel at different lengths at both ends of the middle portion.

In one embodiment, at least the first and second extension portions of the power supply terminals have a pin shape.

In one embodiment, the third accommodating portion is formed on one side of the first accommodating portion, and includes a first terminal securing portion into which the first extending portion is press-fitted, a second terminal securing portion spaced apart from one side of the first accommodating portion, And a connection portion connecting the second terminal fixing portion and the first accommodation portion to each other.

In one embodiment, the housing has a terminal contact protrusion protruding from the inner surface facing the connection portion.

In one embodiment, the circuit board is formed with a plurality of holes through which the terminals of the drive motor, the power supply terminal, the switch terminal, and the terminals of the solenoid valve are fitted so as to enable spot welding.

According to the embodiment of the present disclosure, the drain motor has a structure in which parts provided in the housing are firmly held at a position set by the stop plate. Therefore, it is possible to easily assemble the parts provided in the housing during the manufacture of the drain motor, so that the productivity of the drain motor can be improved. Further, the drain motor has a structure in which the parts provided in the housing are disposed in the housing to occupy a minimum space. Therefore, the drain motor can be manufactured compactly, and such a drain motor can be applied to various washing machines.

1 is a perspective view showing a drain motor according to an embodiment, and an external connector is also shown.
Fig. 2 is a view showing the drain motor shown in Fig. 1 in an exploded view of the housing. Fig.
3 is a perspective view of the drain motor according to one embodiment as seen from another direction.
Fig. 4 is a view showing the drain motor shown in Fig. 3 in an exploded view of the housing.
5 is a view illustrating an assembly of parts provided in a housing according to an embodiment.
FIG. 6 is an exploded view of an assembly of parts shown in FIG. 5. FIG.
7 is a perspective view showing a stop plate according to an embodiment.
8 is a perspective view of the stop plate shown in Fig. 7 as seen from another direction; Fig.
Fig. 9 is a plan view of the stop plate shown in Fig. 7 when viewed from above. Fig.
10 is a view for explaining a structure in which parts electrically connected to a circuit board are held by a stop plate in a drain motor according to an embodiment.
Fig. 11 is a view of the break plate in which components electrically connected to the circuit board shown in Fig. 10 are held, viewed from another direction. Fig.
12 is a perspective view showing a circuit board according to an embodiment.
13 is a partial cross-sectional view of a drain motor according to an embodiment.

The embodiments of the present disclosure are illustrated for the purpose of describing the technical idea of the present disclosure. The scope of the claims according to the present disclosure is not limited to the embodiments described below or to the detailed description of these embodiments.

All technical and scientific terms used in the present disclosure have the meaning generally understood by those of ordinary skill in the art to which this disclosure belongs unless otherwise defined. All terms used in this disclosure are chosen to more clearly illustrate this disclosure and are not to be construed as limiting the scope of the rights under this disclosure.

As used in this disclosure, expressions such as " comprising, "" having," "having, " and the like, unless the context requires otherwise, (open-ended terms).

As used in this disclosure, expressions such as " first ", "second ", and the like are used to distinguish a plurality of components from each other and do not limit the order or importance of the components.

As used in this disclosure, direction indicators such as "front "," front ", and the like refer to directions in which the lever is pulled out of the housing in the accompanying drawings, and direction indicators such as & do. The direction indicators such as "upward" and " upward "refer to the direction in which the circuit board is positioned with respect to the break plate in the accompanying drawings, and the direction indicators such as & do. The drain motors shown in the accompanying drawings may be oriented differently, and the direction indicators may be interpreted accordingly.

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding components are denoted by the same reference numerals. In the following description of the embodiments, description of the same or corresponding components may be omitted. However, even if a description of components is omitted, such components are not intended to be included in any embodiment.

FIG. 1 is a perspective view showing a drain motor according to an embodiment of the present invention, and FIG. 2 is an exploded view of a drain motor shown in FIG. 1. FIG. 3 is a perspective view of the drain motor according to the embodiment viewed from the other direction, and FIG. 4 is a view showing the drain motor shown in FIG. 3 in an exploded view of the housing.

1 to 4, a drainage motor 1000 according to an embodiment is an actuator for opening and closing a drain valve of a washing machine. The drainage motor 1000 is installed adjacent to a drain valve at the bottom of a washing machine of a washing machine, . Although the external connector 10 is shown above the drainage motor 1000 in Fig. 1, the drainage motor 1000 is arranged so that the external connector 10 is connected upward in the downward direction or in the opposite direction It is installed under the washing machine of the washing machine.

The drain motor 1000 can perform one-stage driving and two-stage driving to open and close the drain valve in accordance with the setting conditions of the washing machine related to washing, rinsing and dewatering. For example, the drain motor 1000 can perform one-stage driving that allows washing and rinsing but does not open the drain valve, and can perform two-stage driving to open the drain valve to enable dehydration. The drain valve of the washing machine may be provided with a resiliently coupled brake band. In this case, the drain motor 1000 performs a one-stage driving to pull the brake band so that the drain valve can be opened, It is possible to perform a two-stage drive in which the drainage valve is opened by further pulling the drawn brake band.

The drainage motor 1000 includes a lever 100 coupled with a drain valve of the washing machine and a driving unit 200 having a driving motor 210 for driving the lever 100. In this embodiment, The drain motor 1000 includes a power supply terminal 300 connected to the external connector 10 for supplying power to the driving unit 200, a switch 400 for interrupting power supplied to the driving unit 200, (Hereinafter, referred to as a 'stop plate') 500 for driving the motor 100 to be linearly movable, a drive motor 210, a power terminal 300, and a circuit 400 electrically connected to the switch 400 (600). The drainage motor 1000 includes a housing 100 for accommodating at least a portion of each of the lever 100, the drive unit 200, the power supply terminal 300, the switch 400, the break plate 500, (700).

The housing 700 of one embodiment includes a first housing 710 and a second housing 720 detachably coupled in an upper direction TD and a lower direction LD. A plurality of 'U' shaped hooks 711 and hooks 712 are provided on a plurality of side faces of the first housing 710 toward the front (FD), the left side (LSD), the right side (RSD) do. A plurality of side surfaces facing the front (FD), left side (LSD), and right side (RSD) of the second housing 720 are provided with a plurality of A locking protrusion 721 is provided. The first housing 710 and the second housing 720 are engaged by engagement of the plurality of hooks 711 and the hooks 712 and the plurality of locking protrusions 721 corresponding thereto. The housing 700 is formed with an opening 730 which is opened toward the front side FD by the engagement of the first housing 710 and the second housing 720. The lever 100 is inserted into the opening 730 through the opening 730, A portion in the longitudinal direction is drawn out of the housing 700 or into the housing 700.

At one side of the second housing 720, a connector accommodating portion 724 is formed which defines a hole 724H penetrating vertically so that the external connector 10 can be inserted. On one side of the first housing 710, a connector cover portion 714 having a shape corresponding to the connector accommodating portion 724 is formed. When the first housing 710 and the second housing 720 are coupled to each other, the connector cover portion 714 and the connector accommodating portion 724 are vertically engaged and engaged, And closes the opening hole 724H.

In one embodiment, the connector cover portion 714 is provided with a hook 712 that is tightly coupled to the locking projection 721 relative to the hook 711. The locking protrusion 721 corresponding to the hook 712 is provided in the connector accommodating portion 724. Therefore, it is possible to prevent the first housing 710 and the second housing 720 from being separated from each other by the force applied to the drain motor 1000 when the external connector 10 is connected or disconnected.

The first housing 710 is provided with a plurality of lower lugs 716 and the second housing 720 is provided with a plurality of upper lugs 726 corresponding to the plurality of lower lugs 716. The lower lug 716 and the upper lug 726 form a hole 700H penetrating up and down when the first housing 710 and the second housing 720 are engaged. The drainage motor 1000 may be installed under the washing machine of the washing machine in such a manner that a screw or the like is fastened to the hole 700H formed by the lower lug 716 and the upper lug 726. [

When the drainage motor 1000 is installed in the washing machine, the first housing 710 is installed so as to face the lower part of the washing tub. In this case, since the hole 724H formed in the connector accommodating portion 724 is opened downward, moisture generated in the lower portion of the washing tub can be prevented from penetrating into the drain motor 1000 through the hole 724H have.

A pin hole 718 is formed in the first housing 710 to be opened toward the second housing 720 in order to firmly fix the stop plate 500 disposed inside the housing 700, The housing 720 includes a plurality of pins 728 protruding toward the first housing 710 so as to be fitted into the pin holes 718. [ The stop plate 500 is fitted in the plurality of pins 728 and is fixed in the housing 700. When the first housing 710 and the second housing 720 are engaged, And is retained in the housing 700 without shaking as it is fitted in the pin hole 718. [

A plurality of gear grooves for holding a gear assembly 220 to be described later are formed on the inner surface of the first housing 710 facing the second housing 720 and a gear assembly 220 And a hole through which one end of the rotation axis of the plurality of gears constituting can be fitted.

Hereinafter, the components provided in the housing 700 will be described in detail.

FIG. 5 is a view showing an assembly of parts provided in a housing according to an embodiment, and FIG. 6 is an exploded view of an assembly of parts shown in FIG.

5 and 6, the components that are at least partially received in the housing 700, that is, the lever 100, the driving unit 200, the power terminal 300, the switch 400, the break plate 500, The circuit board 600 is disposed in the housing 700 so that the drain motor 1000 can be manufactured compactly and held firmly in place in the housing 700 for easy assembly. This will be described in more detail below.

 The lever 100 has a substantially bar shape and includes a front end portion 100F coupled to the drain valve in the longitudinal direction thereof and a rear portion 100F having a rack gear 110 provided to receive a driving force from the driving portion 200 And an end portion 100R. The lever 100 is opened downward (LD) and forward and rearward (FD / RD) so that the lever 100 can slide linearly on the stop plate 500, and the length of the lever 100 A rail groove 120 is formed.

The driving unit 200 further includes a gear assembly 220 that transmits the driving force of the driving motor 210 to the lever 100 and a solenoid valve 230 that interrupts the rotation of the gear assembly 220. The power supplied to the drain motor 1000 through the external connector 10 is used to operate the drive motor 210 and the solenoid valve 230. The solenoid valve 230 is electrically connected to the circuit board 600.

The driving motor 210 includes a motor main body 211 having a circular cross section and a pair of terminals 212 provided at one end of the motor main body 211 and a driving shaft 213 provided at the other end of the motor main body 211 .

The gear assembly 220 includes a plurality of reduction gears 221 including an input gear 221A coupled to a drive shaft 213 of the drive motor 210 and a plurality of reduction gears 221, And a gear 222. The output gear 222 includes a spur gear 222A engaged with the reduction gear 221 and a pinion gear 222B axially coupled to the spur gear 222A, And is engaged with the rack gear 110. The spur gear 222A and the pinion gear 222B may be integrally formed. The gear assembly 220 further includes a cam ring 223 that is axially coupled to the output gear 222. The cam ring 223 is axially coupled to the end of the output gear 222 opposite to the spur gear 222A with respect to the pinion gear 222B and rotates in accordance with the rotation of the output gear 222, Or off.

In one embodiment, at least the reduction gears 221 of the gear assembly 220 are disposed on the side opposite the side on which the solenoid valve 230 is positioned relative to the stop plate 500. That is, when the solenoid valve 230 is disposed above the stop plate 500, the reduction gears 221 are disposed below the stop plate 500 (LD). In the case of the output gear 222, a part (spur gear 222A) is disposed below the stop plate 500 to receive the rotational force from the reduction gears 221, (Pinion gear 222B) is disposed above the stop plate 500 (TD) so that the pinion gear 222B can be transmitted to the stopper plate 100. [ To this end, the output gear 222 is rotatably fitted in the stop plate 500.

The gear assembly 220 may further include a clutch 224 that is pressed or depressed by movement of the solenoid valve 230. When the solenoid valve 230 is depressed, the clutch 224 is driven so that the reduction gears on the same axis of rotation as the clutch 224 are engaged with each other. When the solenoid valve 230 is released, So that engagement of the reduction gears meshed with each other is released.

The solenoid valve 230 includes a body 231 forming a space therein, a shaft 232 moving in the body 231, a plunger 233 connected to one end of the shaft 232, A coil 234 for moving the coil 234 and a bobbin 235 for winding the coil 234. The solenoid valve 230 is electrically connected to the coil 234 and has a pair of terminals 236 supported by the bobbin 235. The solenoid valve 230 is electrically connected to the circuit board 600 through a pair of terminals 236.

The power supply terminal 300 has a substantially U shape. Specifically, the power supply terminal 300 includes a middle portion 310 and a first extension portion 320 and a second extension portion 330 that extend in parallel at both ends of the intermediate portion 310. The first extending portion 320 and the second extending portion 330 extend in different lengths with respect to the intermediate portion 310 so that the power source terminal 300 has an asymmetrical shape. The power terminal 300 is fixed to the break plate 500 by press fitting. The power terminal 300 may be easily press-fit into the break plate 500 and may be formed of a metal wire of a predetermined thickness so as to prevent deformation such as warping during the press-fitting process. The first extended portion 320 and the second extended portion 330 are formed to have a pin shape.

The switch 400 is a contact type switch and is composed of a metal fixing member 410 and an elastic member 410 which is bent by the fixing member 410 and elastically restored to the original state before being brought into contact with or bent from the fixing member 410, And a movable piece 420 made of a metal material to be released. At one end of the fixing piece 410, a bent portion 411 electrically connected to the circuit board 600 is provided. Similarly, at one end of the movable piece 420, a bent portion 421 electrically connected to the circuit board 600 is provided. The length of the bent portion 411 provided in the fixing piece 410 and the length of the bent portion 421 provided in the movable piece 420 are set such that the distance between the fixing piece 410 and the movable piece 420 ). ≪ / RTI >

The drainage motor 1000 of one embodiment is configured such that components electrically connected to the circuit board 600 and components not electrically connected to the circuit board 600 are mounted in the housing 700 on the basis of the break plate 500 And is arranged in a space. Specifically, in the drainage motor 1000, the drive motor 210, the solenoid valve 230, the power supply terminal 300, and the switch 400 are disposed above or to the side of the stop plate 500, 220 are disposed below the stop plate 500. By adopting this arrangement structure, the break plate 500 is connected to the terminal 212 of the drive motor 210, the terminal 236 of the solenoid valve 230, the power supply terminal 300, the terminal of the switch 400 The solenoid valve 230, the power source terminal 300 and the switch 400 so that the circuit board 600 can be driven in such a manner that the bent portions 411 and 421 are directed in one direction, It can be easily disposed inside the housing 700 so as to directly contact the terminal 212 of the motor 210, the terminal 236 of the solenoid valve 230, the power terminal 300, and the terminal of the switch 400. In this arrangement, the drive motor 210, the solenoid valve 230, the power supply terminal 300, the switch 400, and the gear assembly 220 are also connected to the stop plate 500 having a small area in the transverse direction So that the drain motor 1000 can be manufactured compactly.

FIGS. 7 and 8 are perspective views showing stop plates used in a drain motor according to an embodiment, respectively, viewed from different directions. 9 is a plan view of the stop plate shown in Fig. 7 as viewed from above.

7 to 9, the stop plate 500 includes a first accommodating portion 510 into which the solenoid valve 230 is inserted, a second accommodating portion 520 into which the drive motor 210 is inserted, And a fourth accommodating portion 540 into which the switch 400 is inserted. The stop plate 500 has a structure in which the second accommodating portion 520, the third accommodating portion 530 and the fourth accommodating portion 540 are disposed around the first accommodating portion 510.

The first accommodating portion 510 has a shape corresponding to the solenoid valve 230 so that the solenoid valve 230 can be inserted. In one embodiment, the first receiving portion 510 is formed in a rectangular box shape having first to fifth sidewalls 511 to 514 and a bottom wall 515. Here, the first sidewall 511 and the second sidewall 512 are opposed to each other in the direction parallel to the moving direction of the lever 100 (forward / backward direction FD / RD), and the third sidewall 513 and the fourth The side walls 514 are opposed to each other in the direction (left-right direction LSD / RSD) intersecting with the moving direction of the lever 100. [ The bottom wall 515 is formed with a through hole 515H through which the part coupled to the shaft 232 or the shaft 232 of the solenoid valve 230 is vertically movably fitted so as to press the clutch 224 do.

The stop plate 500 holds the circuit board 600 disposed in the upper portion TD of the first accommodating portion 510 in place. To this end, the stop plate 500 has a pair of positioning pins 516c protruding upward (TD) from the edge of the first accommodating portion 510. A hole 632 corresponding to the positioning pin 516c is formed in the circuit board 600 (see Fig. 12). The circuit board 600 is fitted in the pair of positioning pins 516c and fixed on the stop plate 500. [ The stop plate 500 is provided with support projections 516a and 516b for supporting the lower portion of the circuit board 600 together with a pair of positioning pins 516c. The circuit board 600 supported by the support protrusions 516a and 516b and the positioning pins 516c includes a first receiving portion 510 for allowing the plunger 233 of the solenoid valve 230 to move, As shown in Fig.

The second receiving portion 520 protrudes rearward from the first side wall 511 of the first receiving portion 510. The second accommodating portion 520 has a cylindrical shape corresponding to the driving motor 210 so that the driving motor 210 can be inserted. The bottom wall 521 of the second accommodating portion 520 is formed with a through hole 521H through which the driving shaft 213 of the driving motor 210 is rotatably fitted.

The third accommodating portion 530 is protruded from the third side wall 513 of the first accommodating portion 510 to hold the inserted power source terminal 300 in place. The third accommodating portion 530 includes a first terminal securing portion 531 formed on one side of the first accommodating portion 510, that is, the third side wall 513, a first accommodating portion A second terminal fixing portion 532 which forms a socket groove 532H which can be brought into contact with the external connector 10 by being separated from the third side wall 513 of the terminal fixing portion 510, 1 accommodating portion 510. The connecting portion 533 includes a connecting portion 533 for connecting the receiving portion 510 to the first receiving portion 510. The first extended portion 320 of the power terminal 300 is pressed into the first terminal fixing portion 531 and the second extended portion 330 of the power terminal 300 is pressed into the second terminal fixing portion 532, do. Three first terminal fixing portions 531 are formed on the third side wall 513 of the first accommodating portion 510 to be spaced apart from each other so as to support and retain the three power supply terminals 300. [ The second terminal fixing portion 532 is disposed within the space formed by the connector accommodating portion 724 and the connector cover portion 714 in the housing 700.

The fourth accommodating portion 540 is formed apart from the fourth side wall 514 of the first accommodating portion 510. The fourth accommodating unit 540 includes a first fixing block 541 formed on the stop plate 500 and a second fixing block 542 detachably coupled to the first fixing block 541 do. One switch 400 may be fixed to the first fixed block 541 and the second fixed block 542, respectively. Accordingly, the fourth accommodating portion 540 can be fixed by vertically separating the pair of switches 400. The first fixing block 541 and the second fixing block 542 are each provided with two fitting grooves 543 capable of fitting the fixing pieces 410 and the movable pieces 420 of the switch 400. Each of the fixing piece 410 and the movable piece 420 is fitted into the fitting groove 543 so that one end of the bending portion 411 or 421 is positioned adjacent to the first receiving portion 510. At least one bending portion 543A is formed in the fitting groove 543 so that the fixing piece 410 and the movable piece 420 are fitted into the fitting groove 543 in a bent state at the bending portion 543A. Therefore, the fixing piece 410 and the movable piece 420, which are formed of a thin metal piece, are brought into close contact with each other in the fitting groove 543 by the force to be restored to their original state before bending, so that they can not be easily removed from the fitting groove 543.

The stopper plate 500 is provided with a stopper plate 500 which is provided at a position adjacent to the fourth accommodating portion 540 so that the movable piece 420 of the switch 400 can be brought into contact with or released from the fixed piece 410 by the rotation of the cam ring 223. [ A hole 560 into which the output gear 222 is rotatably fitted is formed. In the break plate 500 of one embodiment, a hole 560 is formed in the front (FD) of the fourth accommodating portion 540.

As described above, the stop plate 500 is provided with a mounting hole 570 through which the pin 728 formed in the housing 700 can be fitted, so as to be fixed in place in the housing 700, (500).

The stop plate 500 further includes a rail portion 550 disposed between the first accommodating portion 510 and the fourth accommodating portion 540 and guiding the sliding linear movement of the lever 100. A rail portion 550 protruding upward from the one surface of the stop plate 500 extends in the front-rear direction FD / RD. The rail portion 550 has a shape complementary to the rail groove 120 so as to be fitted in the rail groove 120 formed in the rear end portion 100R of the lever 100. [ The lever 100 is linearly guided by the rail portion 550 at the time of driving.

9, in the stop plate 500, the rail portion 550 extends in the front-rear direction FD / RD at a substantially central portion in the left-right direction (LSD / RSD) of the stop plate 500 . A fourth accommodating portion 540 and a hole 560 into which the output gear 222 can be fitted are formed in the right side room RSD of the rail portion 550 in the stop plate 500, A first accommodating portion 510 protruding from the periphery of the second accommodating portion 520 and the third accommodating portion 530 is formed at the left side LSD of the housing 550.

According to the structure of the stop plate 500, since the lever 100 is drawn or drawn in the substantially central portion of the housing 700 without being shifted to one side of the housing 700, the lever 100 Can be stably driven.

Since the drive motor 210, the power supply terminal 300 and the switch 400 are disposed adjacent to each other around the solenoid valve 230, that is, the parts electrically connected to the circuit board 600 are disposed in the space The drainage motor 1000 can be easily compacted. Particularly, since the drive motor 210, the solenoid valve 230, the power supply terminal 300, and the solenoid valve 230 of the switch 400 are disposed at the center, The reduction gears 224 and the reduction gears 221 can be disposed substantially in the center portion of the housing 700 without being shifted to one side. Such a drainage motor 1000 has a structure in which the parts provided in the housing 700 are arranged to occupy a minimum space, and thus can be manufactured compactly.

The first receiving portion 510, the second receiving portion 520, and the fourth receiving portion 540 of the stop plate 500 are opened in the same direction so as to be able to insert the corresponding components, respectively The solenoid valve 230, the driving motor 210 and the switch 400 can be easily inserted into the stop plate 500 in one direction without changing the direction of the stop plate 500. [ Since the drive motor 210, the power supply terminal 300 and the switch 400 are disposed adjacent to the solenoid valve 230 around the solenoid valve 230, The terminal 212 of the solenoid valve 230, the terminal 236 of the solenoid valve 230, the power terminal 300, and the terminal of the switch 400 can be brought into direct contact with each other. Accordingly, since the terminals of the parts and the circuit board 600 are not electrically connected to each other by using a separate lead wire, the assembling process of the drain motor 1000 can be simplified and the assembly time can be shortened. That is, manufacturing productivity of the drain motor 1000 can be improved.

FIG. 10 is a view for explaining a structure in which parts electrically connected to a circuit board are held by a stop plate in the drain motor according to the embodiment, and FIG. 11 is a view for electrically connecting the circuit board shown in FIG. Fig. 5 is a view of the stop plate in which the connected parts are held, viewed from the other direction. Fig. 12 is a perspective view showing a circuit board according to an embodiment.

10 to 12, in the stop plate 500, a solenoid valve 230 is inserted into the first accommodating portion 510 such that the terminal 236 of the solenoid valve 230 faces upward (TD) do. The driving motor 210 is inserted into the second accommodating portion 520 such that the terminal 212 of the driving motor 210 faces upward (TD). The first extending portion 320 and the second extending portion 330 of the power supply terminal 300 are press-fitted into the third accommodating portion 530 toward the upper side (TD). The bent portions 411 and 421 formed in the fixed piece 410 and the movable piece 420 of the switch 400 are inserted into the fourth accommodating portion 540 so as to face upward TD. That is, the terminal 212 of the drive motor 210, the terminal 236 of the solenoid valve 230, the power terminal 300 (the first extension portion 320 of the power terminal 300) The drive motor 210, the solenoid valve 230, the power supply terminal 300 and the switch 400 are held by the stop plate 500 such that the terminals (the bent portions 411 and 421) .

The circuit board 600 is mounted above the driving motor 210 in a state where the driving motor 210, the solenoid valve 230, the power source terminal 300 and the switch 400 are held by the stop plate 500, The first extension portion 320 of the power terminal 300 and the bent portions 411 and 421 of the switch 400 are arranged so as to contact the terminal 212 of the solenoid valve 230 and the terminal 236 of the solenoid valve 230 5). The position of the circuit board 600 is determined by the positioning pins 516c formed on the break plate 500. [

The first extension portion 320 may be connected to the first terminal fixing portion 531 from the lower side LD of the break plate 500 to the first terminal fixing portion 531 Is pressed. The first extended portion 320 is press-fitted so that the tip of the first extended portion 320 can be pulled out of the upper portion TD of the first terminal fixing portion 531 and fit into the circuit board 600 (see FIG. 5). The second extension portion 330 is press-fitted into the second terminal fixing portion 532 from the lower side (LD) of the stop plate 500. The second extension portion 330 is exposed in the socket groove 532H for connection with the external connector 10 (see FIG. 13). The intermediate portion 310 of the power terminal 300 across the connection portion 533 is exposed downward (LD) of the connection portion 533 (see FIG. 11). When the power supply terminal 300 is assembled, a force is applied to the intermediate portion 310 so that the first extension portion 320 and the second extension portion 330 are connected to the first terminal fixing portion 531 and the second terminal fixing portion 330, respectively, And can be press-fitted into the fixing portion 532 at the same time.

The power terminal 300 is directly connected to the circuit board 600 without a separate lead wire. The external connector 10 can be frequently connected to or disconnected from the drain motor 1000. This causes an external force to be applied to the connecting portion between the power source terminal 300 and the circuit board 600 to cause a contact failure. Therefore, in one embodiment, the power terminal 300 may be fixed to the break plate 500 without a separate lead, and may be connected to other components of the power terminal 300 to prevent shaking of the circuit board 600, The stop plate 500 is formed by a surrounding press-fit structure that surrounds the remaining portion except the portion for contact. The first terminal fixing portion 531 formed in the third accommodating portion 530 of the break plate 500 is connected to the first terminal fixing portion 531 of the first extension portion 320 contacting the circuit board 600 among the power supply terminals 300 So as to surround the remaining portions. The second terminal securing portion 532 formed in the third accommodating portion 530 of the stop plate 500 has a second extension portion 532 except for a portion exposed in the socket groove 532H for connection with the external connector 10, (See Fig. 13).

The power supply terminal 300 according to an embodiment is configured such that the second extension portion 330 extends in parallel with the first extension portion 320 so as to connect the external connector 10 from below to the drainage motor 1000, . The first extended portion 320 and the second extended portion 330 of the power terminal 300 can be simultaneously pressed into the corresponding first terminal fixing portion 531 and the second terminal fixing portion 532 The first extending portion 320 and the second extending portion 330 are formed to extend in the same direction. In the case of the drainage motor 1000 employing the power supply terminal 300, the second extension portion 330 connected to the external connector 10 is connected to the drainage motor 1000 installed in the washing machine, . Therefore, it is possible to reduce the possibility of submersion of the connecting portion between the power supply terminal 300 and the external connector 10 and the inside of the drainage motor 1000.

In the break plate 500, a pair of switches 400 are held so as to be separated from each other by the upper and lower portions (TD / LD). Since the switch 400A disposed above the pair of switches 400 is located closer to the circuit board 600 than the switch 400B disposed below the break plate 500 from the break plate 500, The lengths of the bent portions 411 and 421 provided in the fixed piece 410 and the movable piece 420 of the switch 400A are set such that the lengths of the bent portions 411 and 421 of the fixed piece 410 and the movable piece 420, Is shorter than the length of the portions 411 and 421 (see Fig. 6).

12, a terminal 236 of a solenoid valve 230 is connected to a central portion 610 corresponding to the first accommodating portion 510 of the stop plate 500 in the circuit board 600 of the embodiment A contact hole 611 is formed. The terminals of the drive motor 210 are connected to the first to third edge portions 620 to 640 corresponding to the second to fourth receiving portions 520 to 540 of the stop plate 500, A hole 631 in which the first extension portion 320 of the power supply terminal 300 is in contact and a hole 641 in which the bent portions 411 and 421 of the switch 400 are in contact with each other, Respectively. The terminal 236 of the solenoid valve 230, the terminal 212 of the drive motor 210, the first extension 320 of the power terminal 300, the switch 400, The bent portions 411 and 421 of the circuit board 600 are sandwiched between the corresponding holes 611, 621, 631 and 641 so that at least a part thereof protrudes above the circuit board 600 (TD).

Therefore, when assembling the drain motor 1000 according to one embodiment, the drive motor 210, the solenoid valve 230, the power source terminal 300, and the switch 400 are firmly held by the stop plate 500 And the terminal 212 of the drive motor 210, the terminal 236 of the solenoid valve 230, the power terminal 300 and the terminal of the switch 400 are brought into contact with the circuit board 600 without shaking. Therefore, components electrically connected to the circuit board 600 can be spot-welded at a time using, for example, an automatic welding apparatus, so that the drain motor 1000 can be easily manufactured, and the manufacture of the drain motor 1000 And the manufacturing productivity of the drain motor 1000 can be improved.

13 is a partial cross-sectional view of a drain motor according to an embodiment.

Referring to FIG. 13, the housing 700 includes a terminal contact protrusion 740 protruding from the inner surface facing the connection portion 533. Specifically, a terminal contact protrusion 740 is provided on the connector cover portion 714 of the housing 700 (see FIG. 2). The terminal contact protrusion 740 contacts the middle portion 310 of the power terminal 300 when the first housing 710 and the second housing 720 are coupled. The terminal contact protrusion 740 has a function of preventing the power terminal 300 press-fitted into the third accommodating portion 530 from being exerted on the force exerted from the external connector 10 when the external connector 10 is connected to the drain motor 1000 (In the direction opposite to the press-in direction) from the third accommodating portion 530. [ That is, the contact failure between the power supply terminal 300 and the circuit board 600 is prevented.

The present disclosure described above is not limited to the above-described embodiments and the accompanying drawings. It will be apparent to those skilled in the art that various substitutions, alterations, and changes can be made without departing from the spirit of the present disclosure.

100: lever 110: rack gear
200: driving part 210: driving motor
220: gear assembly 222: output gear
230: Solenoid valve 300: Power terminal
400: switch 410:
420: moving piece 500: stop plate
510: first receiving portion 520: second receiving portion
530: third accommodating portion 540: fourth accommodating portion
600: circuit board 700: housing
710: first housing 720: second housing
740: Terminal contact protrusion 1000: Drain motor

Claims (14)

A drain motor for opening / closing a drain valve of a washing machine,
A lever coupled to the drain valve,
A driving unit including a driving motor for driving the lever,
A power supply terminal to be connected to the external connector,
A switch for interrupting power supplied to the driving unit,
A housing accommodating at least a part of each of the lever, the driving unit, the power source terminal, and the switch;
A stopper plate disposed in the housing and holding the drive motor, the power supply terminal, and the switch so that the terminals of the drive motor, the power supply terminal, and the terminals of the switch face one direction;
And a circuit board disposed inside the housing so as to be in contact with the terminals of the drive motor, the power supply terminal, and the switch,
Drain motor. The method according to claim 1,
Wherein the stop plate holds the circuit board in position so that the terminals of the drive motor, the power supply terminal, and the switch are electrically contacted to the circuit board. 3. The method of claim 2,
The break plate includes a positioning pin for fixing the circuit board in place,
Wherein a hole corresponding to the positioning pin is formed on the circuit board. The method according to claim 1,
The driving unit
A gear assembly for transmitting a driving force of the driving motor to the lever,
Further comprising a solenoid valve electrically connected to the circuit board and interrupting rotation of the gear assembly. 5. The method of claim 4,
Wherein the stop plate holds the solenoid valve such that a terminal of the solenoid valve faces one direction. 6. The method of claim 5,
The stop plate
A first accommodating portion into which the solenoid valve is inserted,
A second accommodating portion into which the drive motor is inserted,
A third accommodating portion into which the power supply terminal is inserted,
And a fourth accommodating portion into which the switch is inserted,
And the second to fourth accommodating portions are disposed around the first accommodating portion. 5. The method of claim 4,
Wherein at least reduction gears of the gear assembly with respect to the stop plate are disposed on a side opposite to a side where the solenoid valve is disposed. The method according to claim 6,
Wherein the stop plate further includes a rail portion disposed between the first accommodating portion and the fourth accommodating portion and guiding the sliding linear movement of the lever. 8. The method of claim 7,
Wherein the stop plate is formed with a hole adjacent to the fourth housing portion and into which the output gear of the gear assembly is rotatably fitted. The method according to claim 6,
Wherein the power terminal includes a middle portion and a first extending portion and a second extending portion that extend parallel to each other at both ends of the middle portion. 11. The method of claim 10,
Wherein at least the first and second extension portions of the power terminal have a pin shape. 12. The method of claim 11,
The third receiving portion
A first terminal fixing part formed on one side of the first accommodating part,
A second terminal fixing portion formed with a socket groove spaced apart from one side of the first accommodating portion and to which an external connector is connected,
And a connecting portion connecting the second terminal fixing portion and the first accommodating portion. 13. The method of claim 12,
Wherein the housing has a terminal contact protrusion protruding from an inner surface facing the connection portion. 6. The method of claim 5,
Wherein the circuit board has a plurality of holes through which terminals of the drive motor, the power supply terminal, the switch terminal, and the terminals of the solenoid valve are fitted so that spot welding can be performed.

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