KR102106871B1 - Apparatus and method for supplying multiple fluids - Google Patents

Abstract

The present invention relates to a multi-fluid supply device and method, comprising a motor, a plurality of pumps, a selective power transmission mechanism capable of selectively driving one or more pumps, and a fixed transmission of power from the motor to the selective power transmission mechanism It relates to a multi-fluid supply apparatus and a method for supplying a selective fluid by including a power transmission mechanism, and transmitting power according to the rotation of the shaft of the motor to one pump.
The present invention has the effect of smoothly and reliably transmitting multiple, ie, multiple fluids, and can effectively supply multiple fluids without complicatedly adjusting the flow path or having separate valve bodies. In addition, the fluid can be selectively supplied by selectively transmitting power, thereby making it possible to simplify the structure of the device. Further, by providing a plurality of fluid delivery paths, while allowing each fluid to be transported according to each delivery path, it has the effect of preventing the mixing of the fluid.

Description

Multi-fluid supply device and method {APPARATUS AND METHOD FOR SUPPLYING MULTIPLE FLUIDS}

The present invention relates to a multi-fluid supply apparatus and method, and to a fluid supply apparatus and method capable of selectively supplying two or more fluids.

Devices in which a plurality of fluids are used in one device are generally used in the fields of machinery, automobiles, and home appliances. For example, a plurality of fluids such as a fluid detergent for washing and a fabric softener detergent for fabric softening effect are also used in a washing machine.

In a device in which a plurality of fluids are used, there is a case in which a device for selectively supplying a fluid is provided. Such a device generally regulates the supply of fluid while blocking or opening a flow path.

On the other hand, in the washing machine, in order to selectively supply the mixed liquid of the washing machine detergent and the washing water, the washing water is introduced into each of the solid or liquid detergent regions so that the washing water is discharged while being mixed with the detergent. It is also proposed to control the mixture so that the optional mixed liquid can be supplied to the washing tank.

Patent Document 1: Korean Patent Publication No. 10-2001-0044494

It is an object of the present invention to provide a multi-fluid supply apparatus and method that enables a plurality of fluids to be selectively supplied.

It is also an object of the present invention to provide a multi-fluid supply device and method that facilitates selection of a fluid to be supplied.

Furthermore, it is an object of the present invention to provide a multi-fluid supply apparatus and method capable of selectively supplying a plurality of fluids by a simple motor operation without a valve or a complicated flow path structure.

Other objects and methods of the present invention may be understood by the following description, and may be more clearly understood by examples of the present invention. In addition, the objects and advantages of the present invention can be realized by means of the claims and combinations thereof.

The multi-fluid supply device according to an embodiment of the present invention is provided to be movable between a plurality of pumps, and a plurality of pumps, which are spaced apart and capable of transferring fluid, respectively, and selectively among a plurality of pumps A selective power transmission mechanism capable of driving one or more pumps, and a fixed power transmission mechanism that movably supports the selective power transmission mechanism and transmits power from the motor to the selective power transmission mechanism, and includes a rotational direction of the shaft of the motor According to the movement direction of the selective power transmission mechanism is different, the selective power transmission mechanism transmits power to the drive mechanism of the pump located on the side where the selective power transmission mechanism is moved according to the rotation of the shaft of the motor, thereby moving the selected power transmission mechanism. A positioned pump can be driven to transport fluid.

Here, the selective power transmission mechanism includes a selection gear, the fixed power transmission mechanism includes a fixed gear, the drive mechanism of the pump includes a drive gear, the axis of the fixed gear is connected to the shaft of the motor, and the fixed gear is selected It is meshed with the gear to transmit power from the motor to the select gear, and the select gear is meshed with the drive gear of the pump located on the side to which the select gear has been moved to transmit power.

In addition, further comprising a link arm coupled to the rotation axis of the selection gear and the rotation axis of the fixed gear, and the link arm is rotated around the rotation axis of the fixed gear according to the rotation direction of the fixed gear, so that the selected gear is between a plurality of pumps It can be made portable.

Further, the bracket further supports a rotation shaft of the rotation shaft and a fixed gear of the selection gear, the selection gear and the fixed gear are located on one side of the bracket, and the link arm is located on the other side of the bracket, so that the rotation shaft and the fixed gear of the selection gear The rotating shaft of the coupling arm through the bracket and the link arm, the bracket may be formed with a guide groove for guiding the rotating shaft of the selected gear.

In addition, it may further include a guide mechanism for guiding at least a portion of the movement of the selection gear.

Here, the guide mechanism may include a guide gear part that can be engaged with the selection gear, or a supporter capable of elastically supporting the selection gear, one end coupled with the supporter, and the other end fixedly coupled to the housing of the multi-fluid supply device. It may include an elastic member.

Meanwhile, the plurality of pumps are two pumps, and the selection gear and the fixed gear may be located between the two pumps.

Furthermore, the rotation shaft of the selection gear and the rotation shaft of the fixed gear and the rotation shaft of the drive mechanism are parallel to each other, and may further include a bracket supporting the rotation shaft of the selection gear and the rotation shaft of the fixed gear and the rotation shaft of the drive mechanism.

Here, the fluid is a detergent of the washing machine, and a multi-fluid supply device is mounted on the washing machine to supply other detergents according to washing steps.

In the multi-fluid supply method according to an embodiment of the present invention, the first power is transmitted to the fixed power transmission mechanism by one-way rotation of the motor, and the selected power transmission mechanism is applied to the first power transmitted to the fixed power transmission mechanism. By, moving to the first pump side to drive the first pump, the step of transferring the first fluid by the drive of the first pump, after the transfer of the first fluid is completed, the fixed power transmission by the rotation of the other direction of the motor The second power is transmitted to the mechanism, the selected power transmission mechanism is moved to the second pump side by the second power transmitted to the fixed power transmission mechanism to drive the second pump, and to drive the second pump. It may include the step of transferring the second fluid.

Here, the step of moving the selective power transmission mechanism to the first pump side and the step of moving to the second pump side may include that at least a portion of the movement of the selective power transmission mechanism is guided by the guide mechanism.

Multi-fluid supply device according to another embodiment of the present invention, in the multi-fluid supply device, a motor, a plurality of pumps that are spaced apart and capable of transferring fluid, respectively, are provided between the plurality of pumps, and A selective power transmission mechanism capable of selectively driving one or more pumps among the four pumps, and a fixed power transmission mechanism connected to the selective power transmission mechanism and transmitting power from the motor to the selective power transmission mechanism, the selective power transmission The mechanism may selectively drive a pump located on one side of a plurality of pumps or a pump located on the other side from the other side according to the rotational direction of the shaft of the motor to transfer fluid.

Here, the fixed power transmission mechanism includes a fixed gear, the drive mechanism of the pump includes a drive gear, and the selected power transmission mechanism comprises two or more ratchet gears located on both sides of the center gear and the central gear meshing with the fixed gear. Included, the shaft of the fixed gear is connected to the shaft of the motor, the power from the motor is transmitted to the two or more ratchet gears via the fixed gear and the central gear to rotate the two or more ratchet gears, of the two or more ratchet gears The ratchet gear located on one side transmits power to the drive gear of the pump located on one side only when the rotational direction of the ratchet gear is one direction, and the ratchet gear located on the other side of the two or more ratchet gears of the ratchet gear Power can be transmitted to the drive gear of the pump located on the other side only when the rotation direction is the other direction.

On the other hand, the ratchet gear is an internal ratchet gear on which the gear teeth are formed inside, and the driving mechanism of the pump has a ratchet pawl provided to tune only in one direction of rotation of the ratchet gear. It may be provided, and may include a ratchet wheel (ratchet wheel) is coupled to the center of the pump drive.

In addition, a bracket portion is formed on an outer surface of the outer circumference of the ratchet wheel, and the ratchet pole may be restrained to be rotatable within a predetermined angular range inside the bracket portion.

Moreover, the gear teeth of the ratchet gear are formed to be deflected in one direction, the ratchet pole is engaged with the gear against rotation in one direction of the ratchet gear, and the ratchet pole is rotated against rotation in a direction different from any one direction of the ratchet gear, By riding on a gear tooth, it can only be synchronized in one direction of rotation.

In addition, the fixed power transmission mechanism includes a fixed gear, the drive mechanism of the pump includes a drive gear, the selective power transmission mechanism includes a central gear, the outer peripheral portion of the central gear meshing with the fixed gear is formed , Two internal ratchet gear portions formed in the axial direction of the central gear are formed on the inner circumference of the central gear, and the gear teeth of the internal ratchet gear portion of one of the two internal ratchet gear portions and the internal ratchet gear portion of the other side The gear teeth are formed to be deflected in opposite directions in the tangential direction, and the shaft of the fixed gear is connected to the shaft of the motor, and power from the motor is transmitted to the internal ratchet gear portion via the fixed gear and the outer peripheral gear portion, and the two internals The internal ratchet gear portion located on one side of the ratchet gear portion is on one side only when the rotation direction of the internal ratchet gear portion is one direction. The internal ratchet gear portion, which is located on the other side of the two internal ratchet gear portions, transmits power to the drive gear of the pump, and is connected to the drive gear of the pump located on the other side only when the rotation direction of the ratchet gear is the other direction. It can transmit power.

 The drive mechanism of the pump is provided with a ratchet pawl provided in the outer circumference to be synchronized only in one direction of rotation of the internal ratchet gear portion, and a ratchet wheel having a pump drive shaft coupled to the center is provided. It can contain.

 A bracket portion is formed on an outer surface of the outer peripheral portion of the ratchet wheel, and the ratchet pole is restrained to be rotatable within a predetermined angular range inside the bracket portion, and the gear of the internal ratchet gear portion is a ratchet pole for rotation in one direction of the internal ratchet gear portion This gear meshes with it, and the ratchet pole is rotated with respect to rotation in one direction and the other of the ratchet gear, and can be synchronized only in the rotation in either direction by riding on the gear teeth.

The pump includes a fluid inlet through which the fluid flows and a fluid outlet through which the fluid flows, transferring fluid from the fluid outlet to the fluid outlet, and one or more of the fluid inlet and the fluid outlet is coupled with a backflow prevention mechanism to prevent backflow of the fluid. It may be.

Meanwhile, the fluid is a detergent of the washing machine, and the multi-fluid supply device is mounted on the washing machine to supply other detergents according to washing steps.

Further, the pump may be a rotary pump.

Furthermore, a multi-fluid supply device according to another embodiment of the present invention is provided between a motor, a plurality of pumps, which are spaced apart and capable of transferring fluid, respectively, and optionally one of a plurality of pumps An optional power transmission mechanism capable of driving the above-described pump, and a fixed power transmission mechanism connected to the selective power transmission mechanism and transmitting power from the motor to the selective power transmission mechanism, wherein the fixed power transmission mechanism is connected to a motor. It may include a drive shaft. Here, the selective power transmission mechanism is a selection gear meshed with the worm drive shaft, and engaging protrusions protruding in both directions are formed on both sides of the selection gear, and in both directions according to the rotational direction of the worm drive shaft by thrust of the worm drive shaft. It may be provided to be moved by a predetermined distance to either side. Further, the plurality of pumps may be two pumps respectively located on both sides of the selection gear, and the driving mechanism of each pump includes a driving gear, and the driving gear is located at a position facing the engaging projection of the selection gear, and According to the movement, a locking jaw part engaged with the locking protrusion is formed, and the selection gear moves to either side in both directions, so that the locking protrusion protruding to one side of the selection gear meshes with the locking jaw of the opposing drive gear to the one side. The located pump can be driven.

On the other hand, the movement of the central worm gear along the rotational direction of the worm drive shaft may be moved by thrust by rotation of the worm drive shaft.

In a multi-fluid supply method according to another embodiment of the present invention, the first power is transmitted to the fixed power transmission mechanism by one-way rotation of the motor, and the selected power transmission mechanism is applied to the first power transmitted to the fixed power transmission mechanism. By, the step of driving the first pump, the step of transferring the first fluid by the drive of the first pump, after the transfer of the first fluid is completed, the second power is supplied to the fixed power transmission mechanism by rotation of the motor in the other direction. The step of transmitting, the selected power transmission mechanism, the second power transmitted to the fixed power transmission mechanism, the step of driving a second pump, and the step of driving the second fluid by driving the second pump may be included. You can.

The present invention has the effect of smoothly and reliably transmitting multiple, ie, multiple fluids, and can effectively supply multiple fluids without complicatedly adjusting the flow path or having separate valve bodies.

In addition, the fluid can be selectively supplied by selectively transmitting power, thereby making it possible to simplify the structure of the device.

Furthermore, by providing a plurality of fluid delivery paths, each fluid can be transported according to each delivery path, thereby preventing the mixing of fluids and the like.

1 is a perspective view of a multi-fluid supply device according to an embodiment of the present invention,
2 is a plan view of a multi-fluid supply device according to an embodiment of the present invention,
Figure 3 is an exploded perspective view of a multi-fluid supply device according to an embodiment of the present invention,
Figure 4 is an operational state of the guide mechanism according to an embodiment of the present invention,
5 is a flow chart of a method for supplying multiple fluids according to an embodiment of the present invention,
6 is a perspective view of a multi-fluid supply device according to another embodiment of the present invention,
7 is a cross-sectional view of a ratchet gear included in a multi-fluid supply device according to another embodiment of the present invention,
8A and 8B are some schematic diagrams of a multi-fluid supply device according to another embodiment of the present invention,
9 is a partial schematic diagram of a multi-fluid supply device according to another embodiment of the present invention,
10A, 10B, and 11 are some schematic diagrams of a multi-fluid supply device according to another embodiment of the present invention,
12 is a flow chart of a multiple fluid supply method according to another embodiment of the present invention.

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

In describing the present invention, when it is determined that a detailed description of known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition should be made based on the contents throughout this specification.

On the other hand, the technical spirit of the present invention is determined by the claims, and the following examples are only a means for efficiently describing the technical spirit of the present invention to a person having ordinary knowledge in the technical field to which the present invention pertains.

First, with reference to Figures 1 to 3, to describe the multi-fluid supply device 100 according to an embodiment of the present invention. In the drawings referred to in the following description, a case in which two pumps are provided as a plurality of pumps may be described, but this is only an example and is applicable even when three or more pumps are provided.

1 and 2, the multi-fluid supply device 100 according to the present embodiment includes a motor 10, a plurality of pumps 20, a selective power transmission mechanism 30, and a fixed power transmission mechanism Include 40.

Each of the plurality of pumps 20 has a fluid inlet 22 and a fluid outlet 24. When the pump 20 is driven, fluid flows into the fluid inlet 22 and exits through the fluid outlet 24, whereby fluid can be transferred to the fluid outlet 24 side. The fluid inlet 22 and the fluid outlet 24 may be provided for each pump 20 to prevent mixing of the fluid. Here, the fluid inlet 22 is connected to a fluid reservoir (not shown) in which the fluid is accommodated, and the fluid outlet 24 is connected to a place where fluid is needed or where fluid is to be used to transport and supply fluid there. . Here, the fluid reservoir may be a detergent container of the washing machine, and a place where the fluid is supplied and used may be a washing tank of the washing machine.

A plurality of such pumps 20 are provided, and each fluid inlet 22 may be respectively connected to a plurality of fluid reservoirs in which different fluids are stored so that different pumps can transport different fluids. . However, where the fluid is required or where the fluid is to be used may be not only one, but also two or more.

In addition, the pump 20 may further include a backflow prevention mechanism 80 connected to either the fluid inlet 22 or the fluid outlet 24. 1 to 3 are illustrated in the case where the backflow prevention mechanism 80 is connected to the fluid outlet 24, of course, may be connected to the fluid inlet 22. The backflow prevention mechanism 80 is a mechanism that allows the fluid to be transported in only one direction. Although not illustrated in the drawings, for example, a floating cap is provided inside to allow the fluid to flow in one direction within the backflow prevention mechanism 80. When flowing, the floating cap may be opened, and when flowing in the other direction, the floating cap may be closed. However, the internal structure of the backflow prevention mechanism 80 is not limited to this, and any structure may be used as long as it allows a fluid to flow in one direction and intermittently flows in the other direction. By providing such a backflow prevention mechanism 80, fluid flow from the fluid inlet 22 to the fluid outlet 24 is allowed, but the fluid flow in the reverse direction is blocked.

Here, the pump 20 may have various forms, and is driven by rotation of the driving gear 26, including a driving mechanism, for example, a driving gear 26. For example, the pump 20 may be a rotary pump. The pump 20 may be a vane pump or a gear pump, and in the case of a gear pump, a prime mover gear / follower gear or prime mover lobe / follower lobe may be located therein. Of course, when the gear pump 20 is used, the drive gear 26 may be axially connected to rotate the prime mover gear or the prime mover lobe.

The selective power transmission mechanism 30 selectively drives the plurality of pumps 20, for example, can selectively drive the pump 20 on the moved side while moving between the plurality of pumps 20. . Here, as the selection power transmission mechanism 30, various mechanisms capable of selectively transmitting power according to movement may be used, but hereinafter, an example of using the selection gear 30 will be described.

The selection gear 30 is used as a term for a gear that selectively drives the plurality of pumps 20. The selection gear 30 is formed with a gear tooth on its outer circumference, so that the gear teeth of the selection gear 30 are provided in the pump 20, for example, of the drive gear 26. The pump 20 can be driven by being engaged with a gear formed on the outer circumference (hereinafter, abbreviated as " match between a selection gear and a drive gear "). Here, the selection gear 30 is provided to move between the plurality of pumps 20, and can selectively transmit power only to the pump 20 located on the side where the selection gear 30 is moved. That is, power is transmitted from the selection gear 30 to the driving gear 26 by the engagement of the selection gear 30 and the driving gear 26, so that the pump 20 on the side where the selection gear 30 is moved ), Only the drive gear 26 provided is engaged with the selection gear 30 to receive power, so the other pump 20 does not receive power. Therefore, only the pump 20 that receives power is selectively driven.

Meanwhile, the selective power transmission mechanism 30 may be supported by the fixed power transmission mechanism 40. Here, the fixed power transmission mechanism 40 supports the selective power transmission mechanism 30 to be movable. In addition, the fixed power transmission mechanism 40 may transmit power to the selective power transmission mechanism 30. Accordingly, power from the motor 10 is transmitted to the selective power transmission mechanism 30 via the fixed power transmission mechanism 40.

For example, the power is rotational power. When power is supplied to the motor 10 and the shaft rotates, the rotating shaft of a fixed gear 40 (an example of a fixed power transmission mechanism) connected to the shaft of the motor ( As the 42) rotates, the fixed gear 40 rotates, and the optional gear 30 (an example of the selective power transmission mechanism) engaged with the fixed gear 40 rotates.

Here, the rotation of the fixed gear 40, in addition to rotating the selection gear 30, it is possible to allow the selection gear 30 to be moved between the pump 20. This will be described in more detail with examples.

The rotation shaft 32 of the selection gear 30 and the rotation shaft 42 of the fixed gear 40 may be combined with the link arm 50. Here, the link arm 50 has a beam shape, the hole 52 formed at one end thereof and the rotation shaft 32 of the selection gear 30 are coupled, and the rotation shaft of the fixed gear 40 is attached to the hole 54 formed at the other end 42 may be combined.

Here, the combination of the hole 52 formed at one end of the link arm 50 and the rotation shaft 32 of the selection gear 30 allows the rotation shaft 32 to rotate freely with respect to the hole 52 of the link arm 50. So that the rotation shaft 32 of the selection gear 30 is coupled in a manner that is spaced apart at least partially from the inner circumferential surface of the hole 52 of the link arm 50.

On the other hand, the hole 54 formed at the other end of the link arm 50 and the rotating shaft 42 of the fixed gear 40 are such that the rotating shaft 42 of the link arm 50 and the fixed gear 30 are integrally rotated. The rotating shaft 42 of the fixed gear 40 with respect to the hole 54 of the link arm 50 is coupled so that all can be freely rotated.

Specifically, as shown in FIG. 2, the combination of the link arm 50 and the rotating shaft 42 of the fixed gear 40 is such that the selection gear 30 engages with the drive gear 26 of the pump 20. In the state, it may be made to allow the rotational force of the motor 10 to be transmitted to the driving gear 26 via the fixed gear 40 and the selection gear 30. That is, in a state where the selection gear 30 is engaged with the driving gear 26, the link arm 50 maintains the position shown in FIG. 2, wherein the fixed gear 40 is rotated and the motor ( The rotational force from 10) can be transmitted to the drive gear 26.

In addition, during the movement of the selection gear 30, for example, while the selection gear 30 in FIG. 2 is moved from the position of reference number 30 to the position of 30 ', the rotating shaft 42 of the fixed gear 40 is linked. It is rotated integrally with the arm 50, the selection gear 30 can be moved by the rotation of the fixed gear 40.

Therefore, the hole 54 formed at the other end of the link arm 50 and the rotating shaft 42 of the fixed gear 40 can be rotated integrally and can be rotated relatively freely, and for this purpose, the hole 54 It is necessary to adjust the distance between the inner circumferential surface of and the outer circumferential surface of the rotating shaft 42 to a predetermined distance. Here, the predetermined distance will vary depending on the material, size, etc. of the hole 54 and the rotating shaft 42, for example, when the multi-fluid supply device according to the present embodiment is used as a detergent supply device for a washing machine, about 0.2 mm Can be When the gap is determined in this way, the engagement of each of the fixed gear 40-the selective gear 30-the driving gear 26 under the action of frictional force and centrifugal force generated between the inner peripheral surface of the hole 54 and the outer peripheral surface of the rotating shaft 42 The selection gear 30 may be moved by rotation of the fixed gear 40 until power transmission by the

Here, the moving direction of the selection gear 30 is changed according to the rotation direction of the motor 10. That is, in FIG. 2, when the fixed gear 40 rotates in the counterclockwise direction according to the counterclockwise rotation of the motor 10, the link arm 50 and the selection gear 30 rotate the shaft of the fixed gear 40 (42) is rotated with the hinge axis, and accordingly, the selection gear 30 can move from the position of reference number 30 to the position of 30 '. Conversely, when the selection gear 30 is in the position of reference number 30 ', when the fixed gear 40 rotates clockwise, the selection gear 30 can move from the position of reference number 30' to the position of 30 do. In addition, although not shown in the drawing, the selection gear 30 is able to move from the initial position, for example, the intermediate positions of reference numbers 30 and 30 'to the positions of reference number 30 or 30'.

On the other hand, in order to ensure that the movement of the selection gear 30 is stably performed, a plate-shaped bracket 60 for freely supporting the rotation shaft 32 of the selection gear 30 and the rotation shaft 42 of the fixed gear 40 is rotatable. ) May be provided. In addition, the rotation shaft 32 of the selection gear 30 and the rotation shaft 42 of the fixed gear 40 are parallel to each other, and the bracket 60 can support two parallel rotation shafts 32 and 42. Here, of course, the bracket 60 may form one surface of the multi-fluid supply device according to the present embodiment.

In this case, as shown in FIG. 2, the selection gear 30 and the fixed gear 40 are positioned on one side of the bracket 60 and on the side entering the ground based on FIG. 2, the other side of the bracket 60, The link arm 50 may be positioned on the side coming out of the ground based on FIG. 2. At this time, the guide groove through which the rotation shaft 32 of the selection gear 30 can be guided to the bracket 60 so that the selection gear 30 can move between the pumps 20 on both sides based on FIG. 2 62) may be formed.

As described above, the link arm 50 is positioned on the opposite side of the selection gear 30 and the fixed gear 40 based on the bracket 60 and is coupled to the rotation shafts 32 and 42 of each gear, and at the same time, the selection gear ( By allowing the rotating shaft 32 of 30) to be guided by the guide groove 62 formed in the bracket 60, the movement of the selection gear 30 can be more stabilized.

Furthermore, the multi-fluid supply device according to the present embodiment may further include a guide mechanism 70 for guiding at least a part of the movement of the selection gear 30.

As an example, as shown in Figure 4 (a), the guide mechanism 70 includes a guide gear portion 72 that can be engaged with the selection gear 30 on the movement path of the selection gear 30, The selection gear 30 that moves the upper side of the guide mechanism 70 is guided while being engaged with the guide gear portion 72 to ensure the movement of the more stable selection gear 30. 2 shows an example in which the guide mechanism 70 including the guide gear portion 72 is applied as the guide mechanism 70.

In addition to this, the guide mechanism 70 may be formed on the movement path of the selection gear 30, and may include a supporter 74 and an elastic member 76 that can elastically support the selection gear 30. At this time, the elastic member 76 has one end coupled to the supporter 74 and the other end fixedly coupled to the housing (not shown) of the multi-fluid supply device according to the present embodiment, thereby providing elastic force F to the supporter 74. It may have a structure that can be assigned. As a result, the guide mechanism 70 can not only guide the selection gear 30, but may also move the selection gear 30 quickly. Here, the supporter 74 may be formed in various shapes such as a plate shape, a rectangular shape, and a triangular shape.

Specifically, the guide mechanism 70 including the supporter 74 and the elastic member 76 will be described in more detail with reference to FIG. 4 (b). FIG. 4 (b) shows the case where the supporter 74 is formed in a triangular shape. As shown in Fig. 4 (b), while the selection gear 30 moves, when it touches the left inclined surface of the supporter 74 having a triangular cross section, then the supporter 74 according to the movement of the selection gear 30 ), The elastic member 76 is compressed while moving downward in FIG. 4 (b). Next, when the selection gear 30 passes the triangular apex of the supporter 74 and goes to the right inclined surface, the elastic member 76 expands, and moves upward to the selection gear 30 via the supporter 74. It gives the elastic force of. As a result, the guide mechanism 70 guides the direction in which the selection gear 30 moves, and at the same time enables rapid movement due to the application of elastic force.

Here, although not shown in the drawing, to prevent the elastic member 76 from bending to the left or right of FIG. 4 (b) by the movement of the selection gear 30, a guide bar guiding the elastic member 76 ( Of course, it may be provided (not shown). Further, the elastic member 76 may be a spring.

Next, a method for supplying multiple fluids according to an embodiment of the present invention will be described with reference to FIG. 5.

First, the multi-fluid supply method according to an embodiment of the present invention, the fixed power transmission mechanism 40 by one-way rotation of the motor 10, for example, rotation in either of the clockwise or counter-clockwise direction, For example, the step of transmitting the first power to the fixed gear 40. Accordingly, the fixed gear 40 rotates in the same direction as the rotational direction of the motor (S1) in accordance with the rotation of the motor 10.

Next, the first power transmitted to the fixed power transmission mechanism 40 is transmitted to the selective power transmission mechanism 30, for example, a selection gear meshed with the fixed gear 40 by rotation of the fixed gear 40 (30, which is an example of the selected power transmission mechanism) rotates. At the same time, the selective power transmission mechanism 40 is moved toward the pump 20 (first pump) on one side (S2), and engaged with the drive mechanism 26 of the pump 20, for example, the drive gear 26. Thereafter, the driving gear 26 is rotated while the movement is stopped to drive the pump 20 on one side (S3).

Thus, the first fluid is transferred by the pump 20 on one side (S4).

After the transfer of the first fluid is completed, the motor 10 is rotated in another direction, for example, clockwise or counterclockwise, and the second power is transmitted to the fixed power transmission mechanism 40. do. Thus, the fixed power transmission mechanism 40, for example, the fixed gear 40 rotates in the same direction as the rotational direction of the motor 10 in accordance with the rotation of the motor 10 (S5).

Next, the second power transmitted to the fixed power transmission mechanism 40 is transmitted to the selective power transmission mechanism 30, for example, a selection gear meshed with the fixed gear 40 by rotation of the fixed gear 40 (30, which is an example of the selected power transmission mechanism) rotates. At the same time, the selective power transmission mechanism 40 is moved (S6) toward the pump 20 (second pump) on the other side, and engaged with the drive mechanism 26 of the pump 20, for example, the drive gear 26. Thereafter, the driving gear 26 is rotated while the movement is stopped to drive the pump 20 on the other side (S7), thereby transferring the second fluid (S8).

Here, the selective power transmission mechanism 30, for example, can be guided by the guide mechanism 70 while the selection gear 30 is moving, and the detailed description of the guide mechanism 70 has been described in detail above. It should be omitted.

On the other hand, in the above description, the first power and the second power are separated from each other by driving different pumps, that is, the first pump and the second pump, respectively, to drive the first fluid and the second fluid, respectively. It is distinguished in that it is. In addition, in the present embodiment, only the first fluid and the second fluid are described, but this is a name given to two representative fluids that can be transported by a plurality of pumps, respectively. The number of pumps and the fluid that can be transported are 3 Of course it can be more than a dog.

Next, with reference to FIGS. 6 and 7, a multi-fluid supply apparatus according to another embodiment of the present invention will be described. In describing another embodiment of the present invention, a description overlapping with the description of one embodiment of the present invention will be omitted.

The multi-fluid supply device according to another embodiment of the present invention has a difference in structure and structure of transmitting power of a motor to a driving mechanism of a pump, when compared to an embodiment of the present invention.

Specifically, the multi-fluid supply device 200 according to the present embodiment includes a motor 110, a plurality of pumps 120 (120a and 120b), a selective power transmission mechanism 130, and a selective power transmission mechanism 130 ), A fixed power transmission mechanism 140 for transmitting power from the motor 10. As described above, the pump 120 may further include a backflow prevention mechanism 180 connected to either the fluid inlet 122 or the fluid outlet 124. By providing the backflow prevention mechanism 180, fluid flow from the fluid inlet 122 to the fluid outlet 124 is allowed, but the fluid flow in the reverse direction may be blocked.

 The selective power transmission mechanism 130 drives a pump located at one side of the plurality of pumps 120 or a pump located at the other side from the other side according to the rotational direction of the shaft of the motor 10. That is, the selective power transmission mechanism 130 selectively operates the pumps 120 according to the rotational direction of the shaft of the motor 10.

In this regard, referring to FIG. 6, when the pumps 120a and 120b are provided on both sides of the selective power transmission mechanism 130 and the selective power transmission mechanism 130 is located between the pumps 120a and 120b on both sides. It will be explained by taking as an example. Further, in the description, for example, the fixed power transmission mechanism 140 is a fixed gear 140, and the selective power transmission mechanism 130 includes a central gear 132 and a ratchet gear 134 (see FIG. 7). The case will be described.

As shown in FIG. 6, when the motor 100 rotates in one direction, for example, in the A direction, the fixed power transmission mechanism 140 also rotates in accordance with the rotation of the motor 110. Direction) and rotate the central gear 132 in the A2 direction. In FIG. 6, the case where the central gear 132 is the worm gear 132 and the fixed power transmission mechanism 140 functions as the fixed gear 140 and the worm drive shaft 140 is illustrated, and the motor 10 ) The rotational force of the motor (10) shaft-worm drive shaft 140-worm gear 132 is transmitted to the path.

Here, the central gear (132, for example, a worm gear) is connected to the ratchet gear 134 as shown in Figure 7, the ratchet gear 134 can be rotated according to the rotation of the central gear 132 have.

In addition, as shown in FIG. 7, the ratchet gear 134 may be an internal ratchet gear 134 formed inside a gear tooth gear, and the ratchet gear 134 is located inside the ratchet gear 134. ), The driving mechanism 136 of the pumps 120a and 120b that can receive only the rotational force in one direction (the CCW direction in FIG. 7) is located. Here, the driving mechanism 136 may be a ratchet wheel 136 having a pump drive shaft coupled to the center.

Specifically, as shown in Figure 7, the ratchet wheel 136 on the outer circumferential outer surface of the bracket portion 138 and the bracket portion 138, the ratchet pole (racht pawl) constrained to be rotatable within a predetermined angular range inside ) 139 is formed. Here, the “predetermined angle range” means an angle range that can be rotated so that when the ratchet gear 134 rotates in the CW direction, the ratchet pole 139 rides over the tooth 134a of the ratchet gear 134. . A plurality of ratchet poles 139 may be formed on the outer circumference of the ratchet wheel 136, and each ratchet pole 139 may be formed at an isometric distance from the outer circumference of the ratchet wheel 136.

Here, when the ratchet gear 134 rotates in the CCW direction of FIG. 7, while the ratchet pole 139 is applied to the teeth 134a of the ratchet gear 134 formed to deflect in the CCW direction, the ratchet gear 134 rotates. Accordingly, the ratchet wheel 136 is also tuned to rotate in the CCW direction. Conversely, when the ratchet gear 134 rotates in the CW direction of FIG. 7, the ratchet pole 139 repeatedly rotates and returns a predetermined angle within the bracket portion 138 while the teeth 134a of the ratchet gear 134 are rotated. Riding over, the ratchet gear 134 is in a non-rotating state without synchronizing with the rotation.

Due to this configuration and operation, the pumps 120a and 120b are driven only in one of the CCW direction or the CW direction rotation of the ratchet gear 134 to transport the fluid.

Accordingly, the ratchet gears 134 tuned to different rotational directions are positioned on both sides of the central gear 132, respectively, and as shown in FIG. 7, the pumps 120a and 120b are inside the respective ratchet gears 134. ), The driving gear 136 as the driving mechanism 136, that is, the ratchet wheel 136 coupled to the center of the drive shaft of the pump is positioned, respectively, in the CCW direction of the ratchet gear 134 or in the CCW direction during CW rotation. The pump of reference number 120a in FIG. 7 is driven for rotation, and the pump of reference number 120b can be driven for rotation in the CW direction. Thereby, it is possible to selectively drive the pumps 120a and 120b according to the rotational direction of the ratchet gear 134, whereby it is possible to selectively and multiplely supply fluid.

On the other hand, in the above description, it has been described that the drive shaft of the pump is the ratchet wheel 136 coupled to the drive shafts of the pumps 120a and 120b, and the ratchet gear 134 is connected to the central gear 132. Of course, the driving shaft of the ratchet gear 134 is coupled, and the ratchet wheel 136 may be connected to the central gear 132. In this case, in FIG. 7, when the ratchet wheel 136 is rotated in the CW direction, the ratchet gear 134 can be tuned and rotated in the CW direction to drive the pump, and the ratchet wheel 136 is in the CCW direction. When rotated, the ratchet pole 139 rides over the teeth 134a of the ratchet gear 134 and does not drive the pump.

Here, in the above-described embodiment, the ratchet gear 134 is described as being formed separately to be connected to the central gear 132, but the gear teeth of the ratchet gear may be formed on the inner circumference of the central gear 132, of course to be.

That is, as shown in FIGS. 8A and 8B, the selective power transmission mechanism 230 includes a central gear 232, but an outer peripheral gear portion engaged with the fixed gear 140 at the outer peripheral portion of the central gear 232 ( 232a) may be formed, and an internal ratchet gear portion 232b may be formed in the central gear 232 on the inner peripheral portion of the central gear 232. Here, two of the internal ratchet gear portions 232b and 232c are formed to be bisected in the axial direction, and the gear teeth and the other side of the internal ratchet gear portions 232b on one side of each of the internal ratchet gear portions 232b and 232c are The gear of the internal ratchet gear portion 232c may be formed to be deflected in opposite directions in the tangential direction. That is, for example, the internal ratchet gear part 232b is deflected clockwise (or counterclockwise), and the internal ratchet on the other side is formed adjacent to the internal ratchet gear part 232b. The gear portion 232c may be biased in a counterclockwise direction (or clockwise direction).

Here, as shown in Figure 8b, one side of the ratchet wheel (236b) of the internal ratchet gear portion, so that only one side of the internal ratchet gear portion (232b) can be tuned, one side in the inner circumference of the central gear (232) Only the portion where the internal ratchet gear portion 232b is formed may be inserted inside the central gear 232. Of course, the ratchet wheel 237 of the other side of the internal ratchet gear portion 232b, 232c, so that only the internal ratchet gear portion 232c of the other side can be synchronized, the other side of the ratchet wheel 232c from the other side of the inner circumference of the central gear 232 Only the portion where the internal ratchet gear portion 232c is formed may be inserted inside the central gear 232. Here, the ratchet wheels 238b and 238c provided on the ratchet wheels 236b on one side and the ratchet wheels 232c on the other side may be biased in opposite directions to each other in the tangential direction of the ratchet wheels 236b and 236c.

Accordingly, power from the motor 110 rotated in the direction A of FIG. 8B is transmitted to the internal ratchet gear portions 232b and 232c through the fixed gear 140 and the outer peripheral gear portion 232a. Thereafter, this power is transmitted only to the ratchet pole 238b of the ratchet wheel 236b on one side by the internal ratchet gear portion 232b on one side, and the ratchet pole 238c on the other side is the internal ratchet gear portion ( Power is not transmitted while riding on 232c). Conversely, power from the motor 110 rotated in the B direction of FIG. 8B is transmitted only to the ratchet pole 238c of the ratchet wheel 236c of the other side by the internal ratchet gear portion 232c of the other side.

Therefore, power is transmitted to the drive gear of the pump located on one side only when the rotational direction of the internal ratchet gear portion 232b is one direction, and the other side of the internal ratchet gear portion is located on the other side. The null ratchet gear unit can transmit power to the drive gear of the pump located on the other side only when the rotation direction of the ratchet gear is the other direction.

In this case, the shape of the ratchet wheel, for example, the provision and operation of the ratchet pole, when a separate ratchet gear 134 connected to the central gear 132 as shown in Figure 6 is provided Since the same can be applied, detailed description thereof will be omitted.

On the other hand, in Figures 6, 8a, and 8b for explaining the above-described embodiment, the fixed power transmission mechanism is a worm drive shaft 140, and the central gear is shown as a worm gear 232, but is shown in FIG. As described, the fixed power transmission mechanism may be a spur gear 340, and the selective power transmission mechanism may be a gear having ratchet gear portions 332a and 332b formed on its inner circumference. In this case, as shown in FIG. 9, when the spur gear 340 as a fixed power transmission mechanism is rotated clockwise, all of the ratchet gear parts 332a and 332bb rotate (specifically, the right ratchet gear part 332a). And both the left ratchet gear part 332b are rotated counterclockwise), but only the ratchet pole 338b of the left ratchet wheel 336b is caught by the ratchet gear part 332b, and power is transmitted to the left ratchet wheel 336b. On the contrary, when the spur gear 340 is rotated counterclockwise, the ratchet pole 338a of the right ratchet wheel 336a is caught by the ratchet gear part 332a so that power is transmitted to the right ratchet wheel 336a. . In this way, it is possible to selectively drive the pump.

In addition to this, as shown in FIGS. 10A and 10B, the drive of the selective pump is performed by the rotation of the worm drive shaft 440, the selection gear 432 is either of the two pumps (120a, 120b in FIG. 6). While being moved to the side, it is possible to drive only the pump on one side while engaging the drive gear on one side. This will be described in more detail with reference to FIGS. 10A and 10B.

The fixed power transmission mechanism 440 may include a worm drive shaft 440 that is rotated due to the rotational force from the motor 110, specifically, the rotational force of the shaft of the motor 110, and the worm drive shaft 440 is selected gear 432 ), And at the same time, the selection gear 432 may be moved by a predetermined distance. That is, for example, as illustrated in FIG. 10A, when the worm drive shaft 440 rotates in the A direction, the selection gear 432 is engaged with the worm drive shaft 440 and rotated, and at the same time by the thrust between the gears It is moved to the left as shown in Figure 10a. Conversely, when the worm drive shaft 440 is rotated in the B direction, as shown in FIG. 10B, the selection gear 432 is engaged and rotated with the worm drive shaft 440, and at the same time as shown in FIG. Of course, it will move to the right. Here, the thrust of the selection gear 432 is generated due to the engagement relationship of the gear of the worm gear (the engagement relationship of the spur gear), and can be easily understood by those skilled in the art who understand the worm gear.

Here, the engaging gears 432 are formed with engaging projections 434a and 434b respectively projecting toward both pumps. Accordingly, the selection gear 432 moved to the left of FIG. 10A drives the pump located on the left side of FIG. 10A, and, conversely, the selection gear 432 moved to the left of FIG. 10B is located on the left side of FIG. 10B. The pump is driven.

Specifically, the locking jaws 436a and 436b formed in the drive gear of the pump are formed at positions facing the engaging projections 434a and 434b of the selection gear 432, and the engaging projections 434a of the selection gear 432 , 434b). Here, as shown in FIG. 11, the locking jaws 436a and 436b may be formed only on a predetermined outer circumferential portion connected to the drive gear of the pump.

Thus, when the selection gear 432 moves to the left of FIG. 10A, the locking projection 434b protruding to the left of the selection gear 432 is formed with the left locking jaw portion 436b formed in the driving gear driving the left pump. Interlocked. At this time, since the selection gear 432 has moved to the left side of FIG. 10A, the locking protrusion 434a protruding to the right side of the selection gear 432 is spaced apart from the right locking jaw portion 436a and is not engaged. As a standard, the pump located on the right side is not driven.

Of course, as shown in FIG. 10B, when the worm drive shaft 440 rotates in the B direction, the selection gear 432 moves to the right as shown in FIG. 10B, so that only the pump located on the right side is driven, and on the left side. The positioned pump will not be driven.

Accordingly, it is possible to selectively drive only one of the pumps located on both sides in FIGS. 10A and 10B.

Next, a method for supplying multiple fluids according to another embodiment of the present invention will be described with reference to FIG. 12.

First, in the multi-fluid supply method according to another embodiment of the present invention, the fixed power transmission mechanism 140 is rotated by one direction rotation of the motor 110, for example, rotation in one of clockwise or counterclockwise directions. 340), for example, the first power is transmitted to the worm drive shaft (140, 340) as a fixed gear (140, 340). Accordingly, the worm driving shafts 140 and 340 rotate in the same direction as the rotation direction of the motor 110 (SS1) in accordance with the rotation of the motor 110.

Next, the first power transmitted to the fixed power transmission mechanism (140, 340) is transmitted to the selected power transmission mechanism (130, 230, 330, 430), for example, the worm drive shaft by rotation of the worm drive shaft 140 Gears 132, 232, 332a, 332b, and 432 meshed with 140 (either the central gear 132 or the central worm gear 432 included in the selected power transmission mechanism 130, 230, 330, 430), etc. One example) will rotate. When the gears 132, 232, 332a, 332b, and 432 are rotated, ratchet gears 134, 232b, 232c, which are coupled or connected to both sides, for example, of the gears 132, 232, 332a, 332b, 432, 334a, 334b) are rotated. Here, the ratchet gear (134, 232b, 232c, 334a, 334b), the inside of the ratchet gear (134, 232b, 232c, 334a, 334b) is formed on the inside of the gear ratchet wheel (136, rotated in synchronization with only one-way rotation of the tooth 236a, 236b, 336a, 336b, 436a, 436b) may be provided.

Therefore, when the motor 110 rotates in one direction, only one pump (for example, 120a) to be synchronized with it is driven (SS2), and the other pump (for example, 120b) is not synchronized and is not synchronized. You are in a driving state. Thus, the pump 120a on one side can transfer the first fluid (SS3).

Next, when the motor 110 rotates in the other direction (SS4), only the pump (for example, 120b) on the other side synchronized with it is driven (SS5), whereby the pump 120b on the other side is the second fluid. Can be transferred.

On the other hand, in the above description, only the first fluid and the second fluid are described, but this is a name given to two representative fluids that can be transported by a plurality of pumps, respectively. The number of pumps and the fluid that can be transported are 3 Of course it can be more than a dog.

The configurations shown in the embodiments and drawings described above are only the most exemplary embodiments of the present invention and do not represent all of the technical spirit of the present invention, and various equivalents that can replace them at the time of this application It should be understood that there may be and variations.

10, 110: motor
20, 120, 120a, 120b: pump
30, 130, 230, 330, 430: optional power transmission mechanism
40, 140, 240, 340, 440: fixed power transmission mechanism
50: Link arm
60: bracket
70: guide mechanism
72: guide gear
74: Supporter
76: elastic member
132, 232, 332a, 332b, 432: center gear
134, 232b, 232c, 334a, 334b: ratchet gear
136, 236a, 236b, 336a, 336b, 436a, 436b: ratchet wheel
138: bracket
139: ratchet pole

Claims (30)

In a multiple fluid supply,
With motor,
A plurality of pumps that are spaced apart and capable of transferring fluid,
A selection power transmission mechanism provided to be movable between the plurality of pumps and capable of selectively driving one or more of the plurality of pumps;
A fixed power transmission mechanism that supports the selective power transmission mechanism to be movable, and transmits power from the motor to the selective power transmission mechanism,
The movement direction of the selection power transmission mechanism is different according to the rotational direction of the shaft of the motor, and the selection power transmission mechanism is driven by a pump positioned on the side where the selection power transmission mechanism is moved according to the rotation of the shaft of the motor. By transmitting the power to the mechanism, the pump located on the moved side is driven to transport the fluid,
And a guiding mechanism for guiding at least a portion of the movement of the selective power transmission mechanism,
Multiple fluid supply. According to claim 1,
The selective power transmission mechanism includes a selection gear,
The fixed power transmission mechanism includes a fixed gear,
The drive mechanism of the pump includes a drive gear,
The shaft of the fixed gear is connected to the shaft of the motor,
The fixed gear meshes with the selection gear to transmit the power from the motor to the selection gear,
The selection gear is engaged with the drive gear of the pump located on the side where the selection gear has been moved to transmit the power
Multiple fluid supply. According to claim 2,
Further comprising a link arm coupled to the rotation axis of the selection gear and the rotation axis of the fixed gear,
The link arm is rotated about the rotation axis of the fixed gear according to the rotation direction of the fixed gear, so that the selected gear is movable between the plurality of pumps
Multiple fluid supply. The method of claim 3,
Further comprising a bracket for supporting the rotation shaft of the rotating gear and the fixed gear of the selection gear,
The selection gear and the fixed gear are located on one side of the bracket, and the link arm is located on the other side of the bracket, so that the rotation shaft of the selection gear and the rotation shaft of the fixed gear penetrate the bracket to the link arm. Combined with,
A guide groove for guiding the rotation shaft of the selection gear is formed in the bracket.
Multiple fluid supply. delete According to claim 1,
The selective power transmission mechanism includes a selection gear,
The guide mechanism includes a guide gear portion that can be engaged with the selection gear
Multiple fluid supply. According to claim 1,
The selective power transmission mechanism includes a selection gear,
The guide mechanism,
A supporter capable of elastically supporting the selection gear,
One end is coupled to the supporter, the other end comprises an elastic member fixedly coupled to the housing of the multi-fluid supply device
Multiple fluid supply. According to claim 2,
The plurality of pumps are two pumps,
The selection gear and the fixed gear are located between the two pumps
Multiple fluid supply. According to claim 2,
The rotation axis of the selection gear and the rotation axis of the fixed gear and the rotation axis of the drive mechanism are parallel to each other,
Further comprising a bracket for supporting the rotating shaft of the selection gear and the rotating shaft of the fixed gear and the rotating shaft of the driving mechanism
Multiple fluid supply. The method according to any one of claims 1 to 4 and 6 to 9,
The pump includes a fluid inlet through which the fluid flows and a fluid outlet through which the fluid flows, transferring the fluid from the fluid outlet to the fluid outlet,
One or more of the fluid inlet and the fluid outlet is coupled with a backflow prevention mechanism for preventing backflow of fluid.
Multiple fluid supply. The method according to any one of claims 1 to 4 and 6 to 9,
The fluid is a washing machine detergent,
The multi-fluid supply device is mounted on the washing machine to supply different detergents according to washing steps.
Multiple fluid supply. The method according to any one of claims 1 to 4 and 6 to 9,
The pump is a rotary pump
Multiple fluid supply. The first power is transmitted to the fixed power transmission mechanism by one-way rotation of the motor,
A step in which the selected power transmission mechanism is moved to the first pump side by the first power transmitted to the fixed power transmission mechanism to drive the first pump,
The first fluid is transferred by the drive of the first pump,
After the transfer of the first fluid is completed, the step of transmitting the second power to the fixed power transmission mechanism by the rotation of the other direction of the motor,
The selected power transmission mechanism is moved to the second pump side by the second power transmitted to the fixed power transmission mechanism to drive the second pump, and
And transferring a second fluid by driving the second pump,
The step of moving the selected power transmission mechanism to the first pump side and the second pump side,
Comprising guiding at least a portion of the movement of the selected power transmission mechanism by a guide mechanism,
Multiple fluid supply methods.
delete In a multiple fluid supply,
With motor,
A plurality of pumps that are spaced apart and capable of transferring fluid,
A selective power transmission mechanism provided between the plurality of pumps and capable of driving one or more of the plurality of pumps;
It is connected to the selection power transmission mechanism, and includes a fixed power transmission mechanism for transmitting power from the motor to the selection power transmission mechanism,
The selective power transmission mechanism, according to the rotational direction of the shaft of the motor, selectively drives a pump located on either side of the plurality of pumps or a pump located on the other side of the one side to transfer fluid,
The selective power transmission mechanism includes a portion engaged with the fixed power transmission mechanism and a portion where two or more ratchet gears are formed.
Multiple fluid supply. The method of claim 15,
The fixed power transmission mechanism includes a fixed gear,
The drive mechanism of the pump includes a drive gear,
A portion of the selective power transmission mechanism that engages with the fixed power transmission mechanism is a central gear engaged with the fixed gear, and a portion where the two or more ratchet gears are formed has two or more ratchet gears located on both sides of the central gear. And
The shaft of the fixed gear is connected to the shaft of the motor, and power from the motor is transmitted to the two or more ratchet gears through the fixed gear and the central gear, so that the two or more ratchet gears are rotated,
The ratchet gear located on one side of the two or more ratchet gears transmits power to the drive gear of the pump located on one side only when the rotation direction of the ratchet gear is one direction, and the other side of the two or more ratchet gears The ratchet gear positioned at transmits power to the drive gear of the pump located on the other side only when the rotation direction of the ratchet gear is in the other direction.
Multiple fluid supply. The method of claim 16,
The ratchet gear is an internal racht gear formed inside the gear teeth,
The drive mechanism of the pump is provided with a ratchet pawl provided to tune only in one direction of rotation in the rotational direction of the ratchet gear, and a ratchet wheel in which the drive shaft of the pump is coupled to the center wheel)
Multiple fluid supply. The method of claim 17,
A bracket portion is formed on an outer surface of the outer peripheral portion of the ratchet wheel,
The ratchet pole is restrained to be rotatable within a predetermined angular range inside the bracket portion.
Multiple fluid supply. The method of claim 18,
The gear tooth of the ratchet gear is formed to be deflected in one direction, the ratchet pole engages with the gear with respect to the rotation of the ratchet gear in one direction, and rotates in a direction different from the one direction of the ratchet gear The ratchet pole is rotated with respect to the gear, which is synchronized only in one direction of rotation by riding on the tooth.
Multiple fluid supply. The method of claim 15,
The fixed power transmission mechanism includes a fixed gear,
The drive mechanism of the pump includes a drive gear,
The selective power transmission mechanism includes a central gear, and a portion of the selective power transmission mechanism that engages with the fixed power transmission mechanism is an outer peripheral gear portion formed on an outer peripheral portion of the central gear, and the two or more ratchet gears are formed. The part is two internal ratchet gear parts formed by dividing in the axial direction of the central gear in the inner circumference of the central gear, and the gear teeth and the other side of the internal ratchet gear part of one of the two internal ratchet gear parts The gear of the internal ratchet gear part is formed to be deflected in opposite directions in the tangential direction,
The shaft of the fixed gear is connected to the shaft of the motor, and power from the motor is transmitted to the internal ratchet gear portion via the fixed gear and the outer gear portion,
The internal ratchet gear portion located on one side of the two internal ratchet gear portions transmits power to the drive gear of the pump located on the one side only when the rotation direction of the internal ratchet gear portion is one direction, and the 2 The internal ratchet gear portion located on the other side of the four internal ratchet gear portions transmits power to the drive gear of the pump located on the other side only when the rotation direction of the ratchet gear is the other direction.
Multiple fluid supply. The method of claim 20,
The drive mechanism of the pump is provided with a ratchet pawl provided in the outer circumferential portion for synchronizing only one rotation of the rotation direction of the internal ratchet gear portion, and a ratchet wheel having a pump drive shaft coupled to the center wheel)
Multiple fluid supply. The method of claim 21,
A bracket portion is formed on an outer surface of the outer peripheral portion of the ratchet wheel,
The ratchet pole is constrained to be rotatable within a predetermined angular range inside the bracket portion,
The gear of the internal ratchet gear portion is the ratchet pole engaged with the gear with respect to the one-way rotation of the internal ratchet gear portion, and the ratchet pole with respect to rotation in a direction different from the one direction of the ratchet gear By rotating and turning over the gear teeth, only the one-way rotation is synchronized
Multiple fluid supply. The method according to any one of claims 15 to 22,
The pump includes a fluid inlet through which the fluid flows and a fluid outlet through which the fluid flows, transferring the fluid from the fluid outlet to the fluid outlet,
One or more of the fluid inlet and the fluid outlet is coupled with a backflow prevention mechanism for preventing backflow of fluid.
Multiple fluid supply. The method according to any one of claims 15 to 22,
The fluid is a washing machine detergent,
The multi-fluid supply device is mounted on the washing machine to supply different detergents according to washing steps.
Multiple fluid supply. The method according to any one of claims 15 to 22,
The pump is a rotary pump
Multiple fluid supply. In a multiple fluid supply,
With motor,
A plurality of pumps that are spaced apart and capable of transferring fluid,
A selection power transmission mechanism provided between the plurality of pumps and capable of selectively driving one or more pumps among the plurality of pumps;
It is connected to the selection power transmission mechanism, and includes a fixed power transmission mechanism for transmitting power from the motor to the selection power transmission mechanism,
The fixed power transmission mechanism includes a worm drive shaft connected to the motor,
The selective power transmission mechanism is a selection gear meshed with the worm drive shaft, and engaging protrusions protruding in both directions are formed on both sides of the selection gear, and the thrust of the worm drive shaft causes the worm drive shaft to rotate. It is provided to be movable by a predetermined distance to either side in both directions,
The plurality of pumps are two pumps respectively located on both sides of the selection gear, and the driving mechanism of each pump includes a drive gear, wherein the drive gear is located at a position facing the engaging projection of the selection gear, the According to the movement of the selection gear, a locking jaw portion that is engaged with the locking protrusion is formed,
When the selection gear is moved to either side of the both directions, the locking protrusion protruding to the one side of the selection gear meshes with the locking jaw portion of the driving gear facing the pump to be driven on the one side.
Multiple fluid supply. The method of claim 26,
The pump includes a fluid inlet through which the fluid flows and a fluid outlet through which the fluid flows, transferring the fluid from the fluid outlet to the fluid outlet,
One or more of the fluid inlet and the fluid outlet is coupled with a backflow prevention mechanism for preventing backflow of fluid.
Multiple fluid supply. The method of claim 26,
The fluid is a washing machine detergent,
The multi-fluid supply device is mounted on the washing machine to supply different detergents according to washing steps.
Multiple fluid supply. The method of claim 26,
The pump is a rotary pump
Multiple fluid supply.


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