KR102352230B1 - Motor integrated with control unit and water pump having the same - Google Patents

Abstract

A control unit integrated motor and a water pump including the same according to the present invention include: a motor unit including a stator, a motor housing, and a rotor; a control housing coupled to the motor housing; a control carrier which is provided and fixed inside the control housing and has through-holes penetrating through both upper and lower surfaces; a heat sink inserted into and coupled to the through hole of the control carrier; and a control board that is fixed to the control carrier and provided inside the control housing and is in contact with the heat sink. wherein the control board is configured to be coupled and electrically connected to three-phase terminals electrically connected to the stator coil of the motor unit through a first connector pin, thereby transferring heat generated from the control board to the motor unit through a heat sink The present invention relates to a controller-integrated motor capable of easily dissipating heat to smoothly cool a control board, easy assembly and maintenance, and securing airtightness and productivity, and a water pump including the same.

Description

Control unit integrated motor and water pump including same {Motor integrated with control unit and water pump having the same}

The present invention relates to a controller-integrated motor in which a BLDC motor and an inverter are integrally formed, and a water pump including the same.

Brushless direct current (BLDC) motors are motors that have removed brushes and commutators from DC motors and have installed an electronic commutation mechanism. It is a motor with advantages.

Such a BLDC motor is generally formed as an inverter-integrated BLDC motor in which a motor unit and an inverter unit are integrally formed for a compact configuration. Here, the motor unit includes a stator in which a coil is wound and fixed in the housing, and a rotor disposed close to the stator and coupled to the housing to be rotatably mounted with a permanent magnet. In addition, the inverter unit is provided with a PCB substrate on which various electronic elements including switching elements for controlling the motor unit are mounted, and the switching elements mounted on the PCB substrate are configured to be electrically connected to a coil constituting the stator of the motor unit.

Here, the inverter integrated BLDC motor uses soldering or fusing to connect the three phases of the stator, u, v, w, and the neutral to the PCB board of the control unit, so productivity is lowered and conditions of use A soldering part or a thermal junction part falls off due to phase vibration, etc., and a reliability problem occurs. And due to the coupling structure in which the control cover and the PCB board which are formed separately and are coupled to the control housing are fixed to the control unit by fastening bolts, the structure is complicated and various coupling parts such as laser welding exist, so airtightness and productivity are reduced. In addition, it is difficult to separate the control unit cover and the PCB board after manufacturing, so the maintenance and reusability of each component is reduced, and the control unit has a neutral terminal, so there is a problem in that the temperature of the control unit rises.

In addition, conventionally, for heat dissipation, it is common to adopt a structure in which the motor housing and the control housing are made of a metal material such as aluminum and cooled by heat conduction. Because it is difficult to dissipate heat through it, a new heat dissipation structure is required.

JP 2016-082735 A (2016.05.16)

The present invention has been devised to solve the problems described above, and an object of the present invention is to configure a control unit integrated motor in which a motor unit and a control unit are integrally formed, but reduce the complexity of the conventional structure and remove various coupling units for better airtightness and a control unit-integrated motor capable of securing productivity and the like, and a water pump including the same.

Another object of the present invention is to provide a control unit integrated motor having a structure for dissipating heat generated from a control board (PCB board) of the control unit through an internal heat sink, and a water pump including the same.

The control unit integrated motor of the present invention for achieving the object as described above, the motor unit comprising a stator, a motor housing to which the stator is coupled, and a rotor spaced apart from the stator and rotatably coupled to the motor housing; a control housing formed in a container shape and coupled to the motor housing; a control carrier which is provided and fixed inside the control housing and has through-holes penetrating through both upper and lower surfaces; a heat sink inserted into the through hole of the control unit carrier and fixedly coupled to the control unit carrier; and a control board that is fixed to the control carrier and provided inside the control housing and is in contact with the heat sink. wherein one side of the control board is fixedly and electrically connected to a main connector pin formed in the control housing, and the other side of the control board is first connected to three-phase terminals electrically connected to the stator coil of the motor unit. It can be coupled and electrically connected through a connect pin.

In addition, the first connect pin is formed integrally with the control carrier carrier, an upper end of the first connect pin protrudes upward of the control carrier, and a lower end protrudes below the control carrier carrier, and an upper end of the first connect pin protrudes below the control carrier. It may be coupled and electrically connected to the three-phase terminal, and the lower end may be coupled and electrically connected to the control board.

In addition, the upper end of the first connect pin is inserted into the three-phase terminal to be fit-coupled, and a coupling hole is formed in the control board at a position corresponding to the main connect pin and the first connect pin, the upper end of the main connect pin and The lower end of the first connector pin may be inserted into the coupling hole of the control board to be fitted and coupled.

In addition, a slot penetrating both surfaces is formed at a lower end of the first connect pin and an upper end of the main connect pin, and elastic protrusions are convexly formed on both sides of the slot, and the first connect pin and the main connect pin have elastic protrusions. A portion in which is formed may be inserted into the coupling hole of the control board to be coupled.

In addition, a concave seating groove is formed in the three-phase terminals of the motor unit, a coil is inserted into the seating groove, and a connection connector is inserted into the seating groove, so that the coil is coupled and electrically connected to the connection connector, and the first connector The upper ends of the pins may be inserted into a connection connector coupled to the three-phase terminals to be fit-coupled and electrically connected.

In addition, second connector pins connected to each other are integrally formed with the motor housing in the motor housing, neutral terminals electrically connected to the coil of the motor unit are formed, and the second connector pins are coupled to the neutral terminals and electrically can be connected to

In addition, a concave seating groove is formed in the neutral terminals of the motor unit, a coil is inserted into the seating groove, a connection connector is inserted into the seating groove, and the coil is coupled and electrically connected to the connection connector, and the second connector pins is formed to extend upward, and second connector pins are inserted into the connection connector coupled to the neutral point terminals to be fit-coupled and electrically connected.

In addition, the control housing has a locking protrusion and a step protruding inward from the inner circumferential surface of the side wall, and the control carrier may be fixed by being sandwiched between the locking protrusion and the step of the control housing.

In addition, the control carrier is formed to extend downward from the lower surface, the control board may be fixed by being sandwiched between the lower surface and the locking projection of the control carrier carrier.

In addition, the heat sink is made of a base plate, an upper flange and a lower flange protruding vertically spaced apart from the outer circumferential surface of the base plate, and a heat dissipation fin extending upward from the base plate, wherein the control carrier carrier is formed with a fastening part Thus, the fastening portion of the control carrier carrier may be inserted and sandwiched between the upper flange and the lower flange of the heat sink.

In addition, the control carrier has a cut-out groove from which a part of the circumferential direction is removed adjacent to the fastening part, and the upper flange of the heat sink is formed at a position corresponding to the cut-out groove of the control carrier, the upper flange of the heat sink After being inserted to pass through the cutout groove of the control unit carrier, the heat sink is rotated in the circumferential direction so that the fastening portion of the control unit carrier may be sandwiched between the upper flange and the lower flange of the heat sink.

In addition, the motor housing may include an outer wall, an inner wall spaced apart from the inner side of the outer wall in a radial direction, and a plurality of ribs connecting the outer wall and the inner wall.

In addition, it is fitted to the lower end of the motor housing and further comprises an O-ring coupled to surround the outer surface, the lower surface and the inner surface of the motor housing lower end, the control housing is formed with a concave step inside the upper end of the side wall, the The control housing is fitted to the outside of the O-ring and coupled to the motor housing, and an outer surface portion and a lower surface portion of the O-ring may be in close contact between the motor housing and the control housing.

And the water pump of the present invention is a lower casing; an upper casing coupled to an upper side of the lower casing, an impeller accommodating space formed therein by coupling with the lower casing, and an inlet and an outlet communicating with the impeller accommodating space in which a fluid is introduced and an outlet is formed; an impeller provided in the impeller accommodating space; and the control unit integrated motor coupled to the lower side of the lower casing and having a rotor coupled to the impeller. It can be done including

In addition, it further includes a concave container-shaped rotor accommodating part integrally formed with the lower casing, and a rotor may be provided inside the rotor accommodating part.

The controller integrated motor and the water pump including the same according to the present invention have a simple assembly structure, so that it is easy to couple and electrically connect the control board to the control housing, and it is easy to maintain the control board.

In addition, there is an advantage of securing better airtightness and productivity because there are no various coupling parts and complicated electrical connection structures.

In addition, even though the motor housing and the control unit housing are made of a plastic material, there is an advantage that heat can be smoothly radiated toward the motor unit through a heat sink provided therein.

1 is a front cross-sectional view showing a conventional BLDC motor.
2 to 4 are an assembled perspective view, an assembled cross-sectional view, and an exploded cross-sectional view showing a water pump including a controller-integrated motor according to an embodiment of the present invention.
5 is a plan view of the motor housing viewed from the upper side in the control unit integrated motor according to an embodiment of the present invention.
6 and 7 are partial exploded cross-sectional views and assembly cross-sectional views illustrating a portion to which the first connector pin is coupled and electrically connected in the control unit integrated motor according to an embodiment of the present invention.
8 is a partially assembled cross-sectional view illustrating a portion to which a main connect pin is coupled and electrically connected in the control unit integrated motor according to an embodiment of the present invention.
9 is a partially assembled cross-sectional view illustrating a portion to which a second connector pin is coupled and electrically connected in the control unit integrated motor according to an embodiment of the present invention.
10 to 12 are perspective views illustrating a control unit carrier and a heat sink in the control unit integrated motor according to an embodiment of the present invention.

Hereinafter, the control unit integrated motor of the present invention and a water pump including the same will be described in detail with reference to the accompanying drawings.

2 to 4 are an assembled perspective view, an assembled cross-sectional view, and an exploded cross-sectional view showing a water pump including a controller-integrated motor according to an embodiment of the present invention, and FIG. 5 is a motor housing in a controller-integrated motor according to an embodiment of the present invention. is a plan view viewed from above.

2 to 5 , the control unit integrated motor according to an embodiment of the present invention may be largely composed of a motor unit and a control unit. And the motor unit may be composed of a stator 100 , a motor housing 300 and a rotor 400 , and the control unit includes a control housing 700 , a control carrier 800 , a heat sink 900 , and a control board 730 . can be configured.

First, the stator 100 of the motor unit may include a core 110 , a plurality of teeth 120 , an insulator 130 , a coil 140 , and a plurality of three-phase terminals 150 . In addition, the motor unit may include a plurality of neutral point terminals 170 and second connector pins 180 . For example, the core 110 may be formed in a cylindrical shape, and a plurality of teeth 120 may protrude from the inner circumferential surface of the core 110 in the radial direction. In addition, the teeth 120 are arranged to be spaced apart along the circumferential direction, and the teeth 120 may be radially formed inside the core 110 . In addition, the inner ends of the teeth 120 facing each other are formed to be spaced apart, and the inner side surrounded by the teeth 120 may be formed in a vertically penetrating form. The insulator 130 may be formed of an electrically insulating material, and may be coupled to the core 110 and the teeth 120 to surround the core 110 and the teeth 120 to be electrically insulated. For example, the insulator 130 may be formed on the upper surface and the lower surface of the core 110 , and may be formed to surround the upper surface, the lower surface, and the side surfaces of the teeth 120 . The coil 140 is wound on the outside of the insulator 130 surrounding the teeth 120 , and each winding of the coil 140 may be insulated by a covering. The three-phase terminals 150 and the neutral point terminals 170 may be fixed by being coupled to the insulator 130 , and the coil 140 may be coupled to the ends of the three-phase terminals 150 and the neutral point terminals 170 , respectively. can In addition, the three-phase terminals 150 are terminals of three phases u, v, and w of the stator 100 , and the neutral point terminals 170 may be terminals of another three phases of the stator 100 . In addition, the motor housing 300 may be configured to include an outer wall 301 , a plurality of ribs 302 , an inner wall 303 , and a protruding end 304 . Here, the outer wall 301 is formed in a cylindrical shape, the ribs 302 are formed to extend radially inwardly from the inner circumferential surface of the outer wall 301, and the cylindrical inner wall 303 is formed at inner ends of the ribs 302 in the radial direction. ) is formed, and the protruding end 304 may be formed to extend radially inward from the lower end of the inner wall 303 . In addition, the second connector pin 180 may be integrally formed on the protruding end 304 . In addition, the stator 100 is provided inside the inner wall 303 of the motor housing 300 , and the stator 100 may be coupled and fixed to the inner circumferential surface of the inner wall 303 of the motor housing 300 , and the second connector The pins 180 may be inserted into the neutral point terminals 170 to be fit-coupled and electrically connected. At this time, the lower ends of the second connect pins 180 may be connected to each other to become a neutral point. The lower ends of the two-connect pins 180 may be recessed in the protruding end 304 of the motor housing 300 , and the upper ends may be exposed to the outside of the protruding end 304 to extend upward. The rotor 400 is provided inside the stator 100 in a radial direction, and the outer peripheral surface of the rotor 400 may be disposed to be spaced apart from the inner peripheral surface of the stator 100 . In addition, the rotor 400 may be directly or indirectly rotatably coupled to the motor housing 300 at the lower end and upper end of the rotating shaft 410 .

The control housing 700 of the control unit is composed of a cylindrical side wall 701 and a bottom wall 702 blocking the lower end of the side wall, and may be formed in the form of a container having an open upper side. The control housing 700 may have a stepped 703 protruding inward from the inner circumferential surface of the side wall 701 , and the upper surface of the stepped 703 is the upper surface of the side wall 701 and the upper surface of the bottom wall 702 . It can be located at an intermediate height between them. And a locking protrusion 704 may protrude from the inner circumferential surface of the side wall 701 at a position spaced apart from the upper side of the step 703 . In addition, the control housing 700 may be formed in a form in which the main connect pin 710 protrudes from the upper surface of the one side step 703 into the inner space of the control housing 700, and the main connect pin 710 is made of a metal material. It may be formed and integrally formed through insert injection when the control housing 700 is manufactured using plastic. Thus, the main connect pin 710 may be formed in a form in which the upper end extends upward from the upper surface of the step 703 and the lower end is exposed to the outside of the control housing 700 . In addition, the control housing 700 may be fixed with an open upper side coupled to a lower side of the motor housing. Here, the motor housing 300 has an O-ring 750 fitted to the lower end, and the control housing 700 may be coupled such that the upper end is fitted to the outside of the O-ring 750. The housing 300 and the control housing 700 may be firmly fixed to each other. In addition, the coupling structure of the motor housing 300 and the control housing 700 may be formed in various ways.

The control carrier 800 is formed in a ring shape with through-holes 810 penetrating the upper and lower surfaces formed in the central portion, and may be inserted into the control housing 700 to be provided inside the control housing 700 . And the control carrier 800 is inserted into the inside from the upper side of the control housing 700, the control carrier 800 in a state where the control carrier 800 is seated and supported on the upper surface of the step 703 of the control housing 700 is It may be fixed by being sandwiched between the step 703 and the locking protrusion 704 of the control housing 700 . In addition, the first connect pin 820 may be integrally formed in the control carrier 800 through insert injection or the like, and the lower side of the first connect pin 820 protrudes downward from the lower surface of the control carrier 800 . It is formed in a shape and the upper side of the first connector pin 820 may be formed in a shape protruding upward from the upper surface of the control unit carrier 800 . In addition, the fastening part 840 may be formed in the form of a protrusion protruding from the inner peripheral surface at the lower end of the inner peripheral surface where the through hole 810 of the control carrier 800 is formed. In addition, the control carrier 800 may be formed to extend downward from the lower surface of the locking projection (830).

The heat sink 900 may be inserted into the through hole 810 of the control carrier 800 , and the heat sink 900 may be coupled to and fixed to the fastening part 840 of the control carrier 800 . Here, the heat sink 900 includes a base plate 910 in the form of a disk, a plurality of heat dissipation fins 920 formed to extend upwardly from the upper surface of the base plate 910 , and vertically spaced apart from the outer circumferential surface of the base plate 910 in a radial direction. It may be configured to include an upper flange 911 and a lower flange 912 protruding outward. Thus, the heat sink 900 can be fixed to the control carrier 800 in a form in which the heat dissipation fins 920 protrude upward from the upper surface of the control carrier 800 through the through hole 810 of the control carrier 800 . have. In this case, the upper ends of the heat sinks 920 may be formed to extend to a spaced apart position adjacent to the rotor accommodating part 220 in which the rotor 40 of the motor part is accommodated. And the fastening part 840 of the control carrier 800 is inserted between the upper flange 911 and the lower flange 912 of the heat sink 900 may be coupled in a sandwiched form. In addition, the heat sink 900 may be fixedly coupled to the control carrier 800 in various structures and methods.

The control board 730 may be a PCB board on which electronic devices such as a switching device and a capacitor are mounted. In addition, the control board 730 may be coupled to the lower side of the control carrier 800 , and the control board 730 may be coupled to the lower side of the control carrier 800 from the bottom to the top of the control carrier 800 . In this case, the control board 730 may be fixed by being sandwiched between the lower surface of the control carrier 800 and the locking protrusion 830 , and the upper surface of the control board 730 may be in close contact with the lower surface of the heat sink 900 . . In addition, coupling holes 732 penetrating through both upper and lower surfaces may be formed in the control board 730, and the insert tube 731 made of a metal material is inserted into the control board 730, and the insert tube ( A coupling hole 732 may be formed in 731 . Also, the insert tube 731 may be connected to an electrical circuit of the control board 730 . In addition, when the control board 730 is coupled to the control carrier 800 , the lower end of the first connector pin 820 is inserted into the coupling hole 732 of the control board 730 to be fitted and coupled to the control board 730 . ) and the first connector pin 820 may be electrically connected to each other. In addition, when the control board 730 is assembled by inserting the control carrier 800 into the inside of the control housing 700 in a state in which the control board 730 is coupled to the control carrier 800 and fixed, the upper end of the main connect pin 710 is the control board By being inserted and fitted into the coupling hole 732 of the 730 , the control board 730 and the main connect pin 710 may be electrically connected. Thereafter, when the control housing 700 is coupled to the motor housing 300 , the upper end of the first connector pin 820 may be fitted and electrically connected to the three-phase terminals 150 of the motor unit.

The control housing, the control carrier, the heat sink, and the control board may be easily assembled and fixed by using the press-fitting method, which is a press-fitting method as described above. In addition, since the three-phase terminal, the first connector pin, the control board, and the main connect pin of the motor are easily coupled and electrically connected at the same time as assembly, assembly and productivity can be improved in manufacturing the controller-integrated motor. Accordingly, when the control board is broken, the control board can be easily maintained by removing the control housing from the motor unit to separate the control board from the control housing. In addition, heat generated from the control board of the control unit is transferred to the heat sink by heat conduction, and the heat sink radiates heat toward the motor unit, so that the control board can be smoothly cooled.

6 and 7 are partial exploded cross-sectional views and assembly cross-sectional views illustrating a portion to which the first connector pin is coupled and electrically connected in the control unit integrated motor according to an embodiment of the present invention.

As shown, a slot 821 penetrating both surfaces is formed at the lower end of the first connect pin 820 , and elastic protrusions 822 convexly formed on both sides of the slot 821 may be formed. In addition, the first connect pin 820 may be coupled by inserting a portion in which the elastic protrusion 822 is formed into the coupling hole 732 of the control board 730 . At this time, the width of the outer surface on which the elastic protrusions 822 are formed is formed to be larger than the inner diameter of the coupling hole 732, and the lower end of the first connect pin 820 is inserted into the coupling hole 732 by pressing to be firmly coupled. can

In addition, the lower end of the three-phase terminals 150 of the motor unit is concave from the lower surface to the upper side, a seating groove 151 is formed, the coil 140 is inserted into the seating groove 151, and a connector ( 160 , the coil 140 may be coupled and electrically connected to the upper side of the connection connector 160 . In addition, the first connector pin 820 may be inserted into the lower side of the connection connector 160 to be coupled and electrically connected. In this case, the connection connector 160 may be formed of a metal material, and the coil 140 , the connection connector 160 , and the first connector pin 820 may be electrically connected to each other. In addition, the connection connector 160 has a coil coupling portion 161 with a recessed groove formed from the top to the bottom, so that the coil 140 can be inserted into the groove of the coil coupling portion 161 , and the connection connector 160 . A pin coupling portion 162 concavely grooved from the bottom to the top is formed, and the first connector pin 820 is inserted into the groove of the pin coupling portion 162 to be fit-coupled and electrically connected. In this case, the coil coupling part 161 may be formed in the form of a pair of protrusions that are pointed upwards, and the coil 140 may be inserted between the pair of protrusions. And the upper end of the coil 140 can be supported on the seating groove 151 of the three-phase terminal 150 and the neutral point terminal 170, and the coil 140 is pressed when inserted between a pair of pointed protrusions. The insulating layer may be peeled off to electrically connect the coil 140 and the connection connector 160 . In addition, the pin coupling portion 162 of the connection connector 160 may be formed in the form of a pair of protrusions convex toward the lower side, and each protrusion may have a vertical slot formed therein. Thus, the first connect pin 820 may be inserted between a pair of protrusions forming the pin coupling portion 162 to be coupled and electrically connected, and the first connect pins 820 may be respectively connected by the pair of protrusions. It can be elastically supported.

8 is a partially assembled cross-sectional view illustrating a portion to which a main connect pin is coupled and electrically connected in the control unit integrated motor according to an embodiment of the present invention.

Referring to FIG. 8 , a slot 711 penetrating both surfaces is formed at the upper end of the main connect pin 710 , and elastic protrusions 712 convexly on both sides of the slot 711 may be formed. In addition, the main connect pin 710 may be coupled by inserting a portion in which the elastic protrusion 712 is formed into the coupling hole 732 of the control board 730 . At this time, the width of the outer surface on which the elastic protrusions 712 are formed is formed to be larger than the inner diameter of the coupling hole 732, and the upper end of the main connect pin 710 is inserted into the coupling hole 732 by pressing and can be firmly coupled. have.

9 is a partially assembled cross-sectional view illustrating a portion to which a second connector pin is coupled and electrically connected in the control unit integrated motor according to an embodiment of the present invention.

9, the lower end of the neutral terminal 170 of the motor unit is recessed from the lower surface to the upper side, the seating groove 171 is formed, the coil 140 is inserted into the seating groove 171, the seating groove 171 The connection connector 160 may be inserted so that the coil 140 may be coupled and electrically connected to the upper side of the connection connector 160 . In addition, the second connector pin 180 may be inserted into the lower side of the connection connector 160 to be coupled and electrically connected. In this case, the connection connector 160 may be formed of a metal material, and the coil 140 , the connection connector 160 , and the second connector pin 180 may be electrically connected to each other. In addition, the connection connector 160 has a coil coupling portion 161 with a recessed groove formed from the top to the bottom, so that the coil 140 can be inserted into the groove of the coil coupling portion 161 , and the connection connector 160 . A pin coupling portion 162 concavely grooved from the bottom to the top is formed, and the second connector pin 180 is inserted into the groove of the pin coupling portion 162 to be fit-coupled and electrically connected. In this case, the coil coupling part 161 may be formed in the form of a pair of protrusions that are pointed upwards, and the coil 140 may be inserted between the pair of protrusions. And the upper end of the coil 140 may be supported on the seating groove 171 of the neutral terminal 170, and the coil 140 is pressed when inserted between a pair of pointed protrusions and the insulating layer on the outer surface is peeled off. ) and the connection connector 160 may be electrically connected. In addition, the pin coupling portion 162 of the connection connector 160 may be formed in the form of a pair of protrusions convex toward the lower side, and each protrusion may have a vertical slot formed therein. Thus, the second connect pin 180 may be inserted between a pair of protrusions forming the pin coupling portion 162 to be coupled and electrically connected, and the second connect pins 180 are respectively connected by the pair of protrusions. It can be elastically supported.

10 to 12 are perspective views illustrating a control unit carrier and a heat sink in the control unit integrated motor according to an embodiment of the present invention.

As shown, in the control carrier 800 , a cut-out groove 841 may be formed adjacent to the fastening part 840 in a circumferential direction partially removed. And after inserting the heat sink 900 from the lower side of the control carrier 800 to the upper direction so that the upper flange 911 of the heat sink 900 passes through the cutout 841 of the control carrier 800, the heat sink When the 900 is rotated in the circumferential direction, the fastening portion 840 of the control carrier 800 may be sandwiched between the upper flange 911 and the lower flange 912 of the heat sink 900 . At this time, the locking protrusion 913 protruding from the upper flange 911 of the heat sink 900 and the locking protrusion 842 protruding from the fastening part 840 of the control carrier 800 are caught with each other, and the heat sink 900 . It may not rotate in the opposite direction to being fixed to the control unit carrier 800 by rotating it, so that the heat sink is firmly fixed to the control unit carrier and may not be separated.

In addition, the O-ring 750 may be fitted into the lower end of the motor housing 300 , and the O-ring 750 may be coupled to the motor housing in a form that surrounds the outer surface, the lower surface, and the inner surface, which are three surfaces of the lower end of the motor housing. In addition, the control housing 700 may have a concave step formed inside the upper end of the side wall 701 , and the control housing 700 may be fitted to the outside of the O-ring 750 to be coupled to the motor housing 300 . Here, the O-ring 750 is seated on the inner step of the upper end of the side wall 701 of the control housing 700, and the portion corresponding to the O-ring 750 located on the outer and lower side of the lower end of the motor housing 300 is It may be in close contact between the motor housing 300 and the control housing 700 . Thus, separation of the O-ring can be prevented, and airtightness by the O-ring can be improved.

In addition, the water pump including the controller-integrated motor according to an embodiment of the present invention may include the aforementioned controller-integrated motor and a pump unit coupled thereto.

The control unit integrated motor is as described above, and the pump unit may include a lower casing 210 , a rotor accommodating portion 220 , an impeller 500 , and an upper casing 600 . And the pump unit may be coupled to the upper side of the control unit integrated motor.

First, the lower casing 210 has a lower seating groove 211 concave downward from the upper surface so that a part of the impeller 500 can be accommodated, and radially on the outside of the lower seating groove 211, the impeller ( A concave lower flow path groove 212 may be formed so that the fluid discharged from the 500 may flow.

The rotor accommodating part 220 may be integrally formed with the lower casing 210 by injection, and the rotor accommodating part 220 in the form of a container may be formed concave downward from the center of the lower casing 210 . Thus, the rotor accommodating space 221 is formed inside the rotor accommodating part 220 , and the rotor accommodating part 220 convexly protrudes downward from the lower surface of the lower casing 210 . In addition, the rotor accommodating part 220 may have a lower bearing mounting part 222 formed on a lower bottom portion of the rotor accommodating space 221 , and the lower bearing 411 may be coupled to the lower bearing mounting part 222 . Here, the lower bearing 411 includes a bushing (B) that can radially support the lower end of the rotary shaft 410 of the rotor 400 and a support pin (P) that can support the lower end of the rotary shaft 410 in the axial direction. may include Thus, the rotor 400 is inserted into the rotor accommodating space 221 , which is the inside of the rotor accommodating part 220 , and the outer peripheral surface of the rotor 400 may be disposed to be spaced apart from the inner peripheral surface of the rotor accommodating part 220 . In addition, the lower end of the rotating shaft 410 of the rotor 400 is coupled to the lower bearing 411 so that the rotor 400 can rotate smoothly.

The upper casing 600 is coupled to the upper side of the lower casing 210, and the impeller accommodating space 601 in which the impeller 500 can be accommodated therein by the coupling of the upper casing 600 and the lower casing 210 is provided. is formed And on the lower surface of the upper casing 600, an upper seating groove 630 is formed concavely upward so that a part of the impeller 500 can be accommodated, and the lower seating groove 211 and the upper seating groove 630 accommodate the impeller. A space 601 is formed. In addition, on the lower surface of the upper casing 600, a concave upper flow path groove 632 is formed so that the fluid discharged from the impeller 500 can flow at a position corresponding to the lower flow path groove 212 of the lower casing 210. can And the upper casing 600 has a central portion penetrating vertically so that the upper seating groove 630 and the inlet portion 610 communicate with each other, and the outlet portion ( 620) may be formed. In addition, in the upper casing 600 , an upper bearing mounting part 602 is formed inside the inlet part 610 , and an upper bearing 412 may be coupled to the upper bearing mounting part 602 . At this time, the upper bearing mounting part 602 is disposed at a portion forming the inflow flow path 611 , and the upper bearing mounting part 602 is fixed to the supporting part 612 formed to protrude from the inner circumferential surface of the inflow flow path 611 , and the supporting part 612 . ) may be smoothly passed between the fluids and introduced toward the impeller 500 . Here, the upper bearing 412 includes a bushing (B) that can radially support the upper end of the rotary shaft 410 of the rotor 400 and a support pin (P) that can support the upper end of the rotary shaft 410 in the axial direction. may include Thus, the upper end of the rotation shaft 410 of the rotor 400 is coupled to the upper bearing 412 so that the rotor 400 can rotate smoothly.

The impeller 500 serves to pressurize the fluid introduced into the inlet 610 of the upper casing 600 by rotation toward the outlet 620 . The impeller 500 may include an upper plate 510 , a lower plate 520 , and a blade 530 , and a plurality of blades 530 are disposed between the upper plate 510 and the lower plate 520 spaced apart vertically. It may be formed in a form spaced apart along the circumferential direction. In addition, a through hole penetrating both surfaces is formed in the central portion of the upper plate 510 , and the inside of the impeller 500 communicates with the inlet portion 610 of the upper casing 600 through the through hole. In addition, the outer periphery of the impeller 500 is disposed close to the lower flow path groove 212 and the upper flow path groove 632 portion, so that the fluid discharged from the impeller 500 is a discharge passage 621 formed by the passage grooves. After flowing along, it may be discharged through the outlet portion 620 of the upper casing (600). In addition, in the impeller 500 as an example, the lower plate 520 may be integrally formed with the core portion of the rotor 400, the upper plate 610 and the blades 530 are integrally formed, the blades 530 are the lower plate ( 520) may be formed in a form coupled to. In addition, the impeller may be formed in various shapes.

Thus, the fluid introduced into the inlet 610 of the upper casing 600 is introduced into the impeller 500 through the inflow passage 611 and the through hole in the center of the upper center of the impeller 500, and the rotation of the impeller 500 After being pressurized by the centrifugal force of

The present invention is not limited to the above-described embodiments, and the scope of application is varied, and anyone with ordinary knowledge in the field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims It goes without saying that various modifications are possible.

100: stator
110: core 120: teeth
130: insulator 140: coil
150: 3-phase terminal 151: Anchi home
160: connecting connector
161: coil coupling part 162: pin coupling part
170: neutral point terminal 171: Anchi home
180: second connector pin
210: lower casing
211: lower seating groove 212: lower flow path groove
220: rotor receiving part
221: rotor accommodating space 222: lower bearing mounting part
300: motor housing
301: outer wall 302: rib
303: inner wall 304: protruding end
400: rotor 410: rotation shaft
411: lower bearing 412: upper bearing
B : Bushing P : Support pin
500: impeller
510: upper plate 520: lower plate
530: blade
600: upper casing
601: impeller accommodating space 602: upper bearing mounting part
610: inlet 611: inflow passage
612: support
620: outlet 621: discharge flow path
630: upper seating groove 632: upper flow groove
700: control housing
701: side wall 702: bottom wall
703: step 704: stumbling block
710: main connect pin
711: slot 712: elastic projection
730: control board 731: insert tube
732: coupling hole 750: O-ring
800: control carrier 810: through hole
820: first connector pin 821: slot
822: elastic protrusion 830: jamming protrusion
840: fastening part 841: incision groove
842: stumbling block
900 : heat sink
910: base plate 911: upper flange
912: lower flange 913: locking projection
920: heat dissipation fin

Claims (21)

a motor unit including a stator, a motor housing to which the stator is coupled, and a rotor spaced apart from the stator and rotatably coupled to the motor housing;
a control housing formed in a container shape and coupled to the motor housing;
a control carrier which is provided and fixed inside the control housing and has through-holes penetrating through both upper and lower surfaces;
a heat sink inserted into the through hole of the control unit carrier and fixedly coupled to the control unit carrier; and
a control board fixed to the control carrier and provided inside the control housing and in contact with the heat sink; includes,
One side of the control board is fixedly and electrically connected to the main connector pin formed in the control housing, and the other side of the control board is connected to three-phase terminals electrically connected to the stator coil of the motor unit through a first connector pin. coupled and electrically connected,
The first connect pin is formed integrally with the control carrier carrier, and an upper end of the first connect pin protrudes toward the upper side of the control carrier and a lower end protrudes toward the lower side of the control carrier,
The upper end of the first connector pin is coupled and electrically connected to the three-phase terminal, and the lower end is coupled and electrically connected to the control board,
The upper end of the first connect pin is inserted into the three-phase terminal to be fit-coupled, and a coupling hole is formed in the control board at positions corresponding to the main connect pin and the first connect pin, so that the upper end of the main connect pin and the first The control unit integrated motor, characterized in that the lower end of the connect pin is inserted into the coupling hole of the control board and fitted.
delete delete According to claim 1,
Slots penetrating both sides are formed at the lower end of the first connect pin and the upper end of the main connect pin, and elastic protrusions are formed on both sides of the slot,
The control unit integrated motor, characterized in that the first connect pin and the main connect pin are coupled to each other by inserting the elastic protrusion formed into the coupling hole of the control board.
According to claim 1,
A concave seating groove is formed in the three-phase terminals of the motor unit, a coil is inserted into the seating groove, and a connection connector is inserted into the seating groove, so that the coil is coupled and electrically connected to the connection connector,
The upper end of the first connector pins is inserted into the connector coupled to the three-phase terminals, the control unit integrated motor, characterized in that the fitting coupling and electrically connected.
The method of claim 1,
The motor housing has second connector pins connected to each other integrally formed with the motor housing, and the motor unit has neutral terminals electrically connected to the coil of the stator,
The control unit integrated motor, characterized in that the second connector pins are coupled and electrically connected to neutral terminals.
7. The method of claim 6,
A concave seating groove is formed in the neutral terminals of the motor unit, a coil is inserted into the seating groove, and a connection connector is inserted into the seating groove, so that the coil is coupled and electrically connected to the connection connector,
The second connector pins are formed to extend upward, and the second connector pins are inserted into a connection connector coupled to the neutral point terminals so that they are fit-coupled and electrically connected.
The method of claim 1,
The control unit housing has a locking protrusion and a step protruding inward from the inner circumferential surface of the side wall, and the control unit carrier is fixed by being sandwiched between the locking protrusion and the step of the control housing.
According to claim 1,
The control unit carrier has a locking projection extending downward from the lower surface, the control board is a control unit integrated motor, characterized in that fixed by being sandwiched between the lower surface and the locking projection of the control carrier carrier.
The method of claim 1,
The heat sink comprises a base plate, an upper flange and a lower flange protruding vertically spaced apart from the outer circumferential surface of the base plate, and a heat dissipation fin extending upward from the base plate,
The control unit integrated motor, characterized in that the coupling portion is formed in the control carrier carrier, the coupling portion of the control carrier is inserted between the upper flange and the lower flange of the heat sink is sandwiched.
11. The method of claim 10,
The control carrier has a cut-out groove from which a part of the circumferential direction is removed adjacent to the fastening part, and the upper flange of the heat sink is formed at a position corresponding to the cut-out groove of the control carrier,
After the upper flange of the heat sink is inserted to pass through the cut-out groove of the control carrier, the heat sink is rotated in the circumferential direction so that the fastening portion of the control carrier is sandwiched between the upper flange and the lower flange of the heat sink. Integral motor.
The method of claim 1,
The motor housing includes an outer wall, an inner wall spaced apart from the inner side of the outer wall in a radial direction, and a plurality of ribs connecting the outer wall and the inner wall.
According to claim 1,
It is fitted into the lower end of the motor housing and further comprises an O-ring coupled to cover the outer surface, the lower surface and the inner surface of the lower end of the motor housing,
The control housing has a concave step formed inside the upper end of the side wall, the control housing is fitted to the outside of the O-ring is coupled to the motor housing,
The O-ring has an outer surface portion and a lower surface portion of the control unit integrated motor, characterized in that the contact between the motor housing and the control housing.
lower casing;
an upper casing coupled to an upper side of the lower casing, an impeller accommodating space formed therein by coupling with the lower casing, and an inlet and an outlet communicating with the impeller accommodating space in which a fluid is introduced and an outlet is formed;
an impeller provided in the impeller accommodating space; and
It is coupled to the lower side of the lower casing, the rotor is coupled to the impeller, claim 1, claim 4 to claim 13, wherein any one of the control unit integrated motor;
A water pump comprising:
15. The method of claim 14,
Further comprising a concave container-shaped rotor accommodating part integrally formed with the lower casing,
The water pump, characterized in that the rotor is provided inside the rotor receiving part. a motor unit including a stator, a motor housing to which the stator is coupled, and a rotor spaced apart from the stator and rotatably coupled to the motor housing;
a control housing formed in a container shape and coupled to the motor housing;
a control carrier which is provided and fixed inside the control housing and has through-holes penetrating through both upper and lower surfaces;
a heat sink inserted into the through hole of the control unit carrier and fixedly coupled to the control unit carrier; and
a control board fixed to the control carrier and provided inside the control housing and in contact with the heat sink; includes,
One side of the control board is fixedly and electrically connected to the main connector pin formed in the control housing, and the other side of the control board is connected to three-phase terminals electrically connected to the stator coil of the motor unit through a first connector pin. coupled and electrically connected,
A concave seating groove is formed in the three-phase terminals of the motor unit, a coil is inserted into the seating groove, and a connection connector is inserted into the seating groove, so that the coil is coupled and electrically connected to the connection connector,
The upper end of the first connector pins is inserted into the connector coupled to the three-phase terminals, the control unit integrated motor, characterized in that the fitting coupling and electrically connected.
a motor unit including a stator, a motor housing to which the stator is coupled, and a rotor spaced apart from the stator and rotatably coupled to the motor housing;
a control housing formed in a container shape and coupled to the motor housing;
a control carrier which is provided and fixed inside the control housing and has through-holes penetrating through both upper and lower surfaces;
a heat sink inserted into the through hole of the control unit carrier and fixedly coupled to the control unit carrier; and
a control board fixed to the control carrier and provided inside the control housing and in contact with the heat sink; includes,
One side of the control board is fixedly and electrically connected to the main connector pin formed in the control housing, and the other side of the control board is connected to three-phase terminals electrically connected to the stator coil of the motor unit through a first connector pin. coupled and electrically connected,
In the motor housing, second connector pins connected to each other are integrally formed with the motor housing, and the motor unit includes neutral terminals electrically connected to the coil of the stator,
The control unit integrated motor, characterized in that the second connector pins are coupled and electrically connected to neutral terminals.
a motor unit including a stator, a motor housing to which the stator is coupled, and a rotor spaced apart from the stator and rotatably coupled to the motor housing;
a control housing formed in a container shape and coupled to the motor housing;
a control carrier which is provided and fixed inside the control housing and has through-holes penetrating through both upper and lower surfaces;
a heat sink inserted into the through hole of the control unit carrier and fixedly coupled to the control unit carrier; and
a control board fixed to the control carrier and provided inside the control housing and in contact with the heat sink; includes,
One side of the control board is fixedly and electrically connected to the main connector pin formed in the control housing, and the other side of the control board is connected to three-phase terminals electrically connected to the stator coil of the motor unit through a first connector pin. coupled and electrically connected,
The control unit housing has a locking protrusion and a step protruding inward from the inner circumferential surface of the side wall, and the control unit carrier is fixed by being sandwiched between the locking protrusion and the step of the control housing.
a motor unit including a stator, a motor housing to which the stator is coupled, and a rotor spaced apart from the stator and rotatably coupled to the motor housing;
a control housing formed in a container shape and coupled to the motor housing;
a control carrier which is provided and fixed inside the control housing and has through-holes penetrating through both upper and lower surfaces;
a heat sink inserted into the through hole of the control unit carrier and fixedly coupled to the control unit carrier; and
a control board fixed to the control carrier and provided inside the control housing and in contact with the heat sink; includes,
One side of the control board is fixedly and electrically connected to the main connector pin formed in the control housing, and the other side of the control board is connected to three-phase terminals electrically connected to the stator coil of the motor unit through a first connector pin. coupled and electrically connected,
The control unit carrier has a locking projection extending downward from the lower surface, the control board is a control unit integrated motor, characterized in that fixed by being sandwiched between the lower surface and the locking projection of the control carrier carrier.
a motor unit including a stator, a motor housing to which the stator is coupled, and a rotor spaced apart from the stator and rotatably coupled to the motor housing;
a control housing formed in a container shape and coupled to the motor housing;
a control carrier which is provided and fixed inside the control housing and has through-holes penetrating through both upper and lower surfaces;
a heat sink inserted into the through hole of the control unit carrier and fixedly coupled to the control unit carrier; and
a control board fixed to the control carrier and provided inside the control housing and in contact with the heat sink; includes,
One side of the control board is fixedly and electrically connected to the main connector pin formed in the control housing, and the other side of the control board is connected to three-phase terminals electrically connected to the stator coil of the motor unit through a first connector pin. coupled and electrically connected,
The heat sink comprises a base plate, an upper flange and a lower flange protruding vertically spaced apart from the outer circumferential surface of the base plate, and a heat dissipation fin extending upward from the base plate,
The control unit carrier has a fastening portion formed therebetween the upper flange and the lower flange of the heat sink, the control unit integrated motor, characterized in that the fastening portion of the control carrier carrier is inserted and sandwiched.
a motor unit including a stator, a motor housing to which the stator is coupled, and a rotor spaced apart from the stator and rotatably coupled to the motor housing;
a control housing formed in a container shape and coupled to the motor housing;
a control carrier which is provided and fixed inside the control housing and has through-holes penetrating through both upper and lower surfaces;
a heat sink inserted into the through hole of the control unit carrier and fixedly coupled to the control unit carrier; and
a control board fixed to the control carrier and provided inside the control housing and in contact with the heat sink; includes,
One side of the control board is fixedly and electrically connected to the main connector pin formed in the control housing, and the other side of the control board is connected to three-phase terminals electrically connected to the stator coil of the motor unit through a first connector pin. coupled and electrically connected,
It is fitted into the lower end of the motor housing and further comprises an O-ring coupled to cover the outer surface, the lower surface and the inner surface of the lower end of the motor housing,
The control housing has a concave step formed inside the upper end of the side wall, the control housing is fitted to the outside of the O-ring is coupled to the motor housing,
The O-ring has an outer surface portion and a lower surface portion of the control unit integrated motor, characterized in that the contact between the motor housing and the control housing.

Images