CN219087631U - Electric control box, electric control assembly, motor assembly and washing machine - Google Patents

Abstract

The utility model discloses an electric control box, an electric control assembly, a motor assembly and a washing machine, wherein the electric control box comprises a box body and a heat conduction part, the box body is made of plastic, an inner cavity for accommodating an electric control plate is formed in the box body, the heat conduction part is made of metal materials, a contact part is arranged on one side of the heat conduction part, a plurality of radiating fins are arranged on the other side of the heat conduction part, the heat conduction part is in close contact with the box body, the contact part is positioned in the inner cavity to be connected with electronic components of the electric control plate, and the radiating fins extend to the outside of the box body. The contact part is connected with the electronic component which generates heat, so that heat of the electronic component is conducted to the heat conducting component, on one hand, the heat is radiated through the fins of the heat conducting component, and on the other hand, the heat is radiated outwards through the box body, and the heat radiation of the electronic component is facilitated. The contact part is positioned in the inner cavity of the box body, so that the electronic components are prevented from being exposed to contact with water vapor, and the use reliability is improved; the heat conduction component is utilized to conduct and radiate heat, a metal electric control box is not needed, and the manufacturing cost is reduced.

Description

Electric control box, electric control assembly, motor assembly and washing machine

Technical Field

The utility model relates to the technical field of household appliances, in particular to an electric control box, an electric control assembly, a motor assembly and a washing machine.

Background

In the related art, the electric control assembly comprises an electric control box and an electric control plate arranged in the electric control box, and part of electronic components on the electric control plate generate more heat during operation, so that the heat needs to be timely emitted, such as a radiating fin is arranged on the electronic components, or the electronic components are helped to radiate by using a metal electric control box with good heat conductivity. However, the electric control assembly is usually located in the household appliance, part of the internal environment of the household appliance is relatively humid (such as a washing machine), and electronic components cannot be exposed, so that the cooling fin is difficult to install, the assembly process is complicated, and the efficiency is low; the metal electric control box has the problems of high cost and leakage risk, and is limited in use.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the electric control box which can meet the heat dissipation of electronic components and has low cost.

The utility model also provides an electric control assembly applying the electric control box.

The utility model also provides a motor assembly and a washing machine applying the electric control assembly.

The utility model also provides a washing machine with the motor assembly.

According to the embodiment of the first aspect of the utility model, the electronic control box comprises a box body and a heat conducting component, wherein the box body is made of plastic, an inner cavity for accommodating an electronic control board is formed in the box body, the heat conducting component is made of metal materials, a contact part is arranged on one side of the heat conducting component, a plurality of radiating fins are arranged on the other side of the heat conducting component, the heat conducting component is in close contact with the box body, the contact part is positioned in the inner cavity to be connected with electronic components of the electronic control board, and the radiating fins extend to the outside of the box body.

The electric control box according to the embodiment of the first aspect of the utility model has at least the following beneficial effects: the electric control box comprises a box body made of plastic materials and a heat conduction component made of metal materials, the heat conduction component is in close contact with the box body, and the contact part of the heat conduction component is connected with the electronic component which generates heat, so that heat of the electronic component is conducted to the heat conduction component, on one hand, heat is dissipated through a plurality of fins of the heat conduction component, on the other hand, heat is dissipated outwards through the box body, and the heat dissipation of the electronic component is facilitated. Because the contact part is positioned in the inner cavity of the box body, the electronic components conduct heat through the heat conducting component, so that the electronic components are prevented from being exposed to contact with water vapor, and the use reliability is improved; the heat conduction component is utilized to conduct and radiate heat, a metal electric control box is not needed, and the manufacturing cost is reduced.

According to some embodiments of the first aspect of the present utility model, the heat conducting member is integrally injection molded with the case, the case wraps the heat conducting member, the contact portion protrudes into the inner cavity and is exposed, and the heat dissipating fin protrudes to the outside of the case and is exposed.

According to some embodiments of the first aspect of the utility model, the bottom wall of the inner cavity is provided with a through hole, the heat conducting member is arranged in the through hole, and a peripheral wall of the heat conducting member is connected to an inner wall of the through hole.

According to some embodiments of the first aspect of the utility model, the peripheral wall of the heat conducting member is provided with a plug which is embedded in the inner wall of the through hole.

According to some embodiments of the first aspect of the utility model, the heat conducting member is disposed in the inner cavity, and the heat conducting member is attached to a bottom wall of the inner cavity.

According to some embodiments of the first aspect of the utility model, a plurality of the heat radiating fins are arranged in parallel and arranged vertically.

According to some embodiments of the first aspect of the present utility model, the heat conducting component includes a base plate, the contact portion is disposed on the base plate, and an end surface of the contact portion connected to the base plate is greater than or equal to an end surface of the contact portion connected to the electronic component.

According to some embodiments of the first aspect of the present utility model, the bottom plate is provided with a void-avoiding groove, the void-avoiding groove being arranged at a periphery of the contact portion, and a depth of the void-avoiding groove is 1mm or more.

An electrical control assembly according to an embodiment of the second aspect of the present utility model comprises an electrical control box according to an embodiment of the first aspect and an electrical control board, wherein the electrical control board is located in the inner cavity, and the electrical control board is provided with an electronic component connected with the contact portion.

According to some embodiments of the second aspect of the present utility model, an insulating thermal grease is disposed between the electronic component and the contact portion.

According to the electric control assembly of the embodiment of the second aspect of the utility model, the contact part is provided with at least one connecting hole, and a fastener is arranged in the connecting hole to fix the electronic component.

According to the electric control assembly of the embodiment of the second aspect of the utility model, the box body is provided with a plurality of fixing columns, the fixing columns are circumferentially arranged at intervals on the bottom wall of the inner cavity, and the electric control plate is fixed on the fixing columns through fasteners.

According to the electronic control assembly of the embodiment of the second aspect of the utility model, the fixing column is provided with a supporting surface abutting against the electronic control plate, and the distance between the supporting surface and the contact part is greater than or equal to the thickness of the electronic component along the axial direction of the fixing column.

According to some embodiments of the second aspect of the present utility model, the inner cavity is filled with a pouring sealant, and the pouring sealant wraps the electric control board.

According to a third aspect of the utility model, the motor assembly comprises a motor body and the electric control assembly according to the second aspect, wherein the electric control box is provided with an assembling part facing the motor body, and the assembling part is fixedly connected with the motor body through a fastener.

According to a fourth aspect of the utility model, the washing machine comprises a casing and the motor assembly according to the third aspect, wherein a mounting part is arranged on the periphery of the electric control box and fixedly connected with the casing through a fastener.

A washing machine according to an embodiment of a fifth aspect of the present utility model includes an electronic control assembly as described in the embodiment of the second aspect.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Additional aspects and advantages of the present utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a front view of an electronic control box according to an embodiment of the first aspect of the present utility model;

fig. 2 is a front view of the heat conductive member of fig. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is a partial cross-sectional view of an electrical control assembly according to an embodiment of the second aspect of the present utility model;

FIG. 6 is a full cross-sectional view of an electronic control assembly according to an embodiment of the second aspect of the present utility model;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

FIG. 8 is a schematic view of a motor assembly according to a third aspect of the present utility model;

fig. 9 is an exploded view of a motor assembly according to an embodiment of the third aspect of the present utility model.

The reference numerals are as follows:

the box body 100, the inner cavity 101, the through hole 102, the mounting part 110, the fixing column 120 and the assembling part 130;

a heat conduction member 200, a contact portion 201, a connection hole 202, a clearance groove 203, a heat conduction fin 210, and a plug board 220;

an electronic control board 300 and an electronic component 310;

the motor body 400.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The part household appliances have automatically controlled subassembly in order to control power component (such as motor, compressor), and automatically controlled subassembly generally includes automatically controlled box and automatically controlled board, and automatically controlled board is located the inside of automatically controlled box, through automatically controlled box protection automatically controlled board, avoids collision and steam contact automatically controlled board, and automatically controlled box still has radiating function, and the some electronic components on the automatically controlled board produces more heat in operation, needs automatically controlled box in time gives off the heat.

In the related art, a mode of installing the radiating fin on the electronic component can be adopted, the radiating fin is utilized to help the electronic component to radiate heat, but the electric control component is usually positioned in the household appliance, and the internal environment of part of the household appliance is relatively moist (such as a washing machine), so that the electronic component cannot be exposed, the radiating fin is difficult to install, the integral structure of the electric control component is relatively complex, and the assembly is complicated. Or the electronic components are helped to dispel the heat by the metal automatically controlled box that the thermal conductivity is good, and the metal automatically controlled box not only has the problem of high cost, has the electric leakage risk again, and the use is restricted.

Therefore, the embodiment of the first aspect of the present utility model provides an electronic control box, which can simplify the assembly steps of the electronic control assembly, is suitable for a humid environment, and has lower manufacturing cost than a metal electronic control box.

Referring to fig. 1 to 7, an embodiment of the first aspect of the present utility model proposes an electronic control box, the electronic control box includes a box body 100 and a heat conducting component 200, the box body 100 is made of plastic, for example, plastic with a heat conductivity coefficient greater than or equal to 0.3W/(m·k), the box body 100 is formed with an inner cavity 101, the inner cavity 101 is used for accommodating an electronic control board 300, the electronic control board 300 is generally integrally disposed in the inner cavity 101, and the electronic control board 300 is fixedly connected with the box body 100 through screws or buckles, so that on one hand, the box body 100 plays a role in protecting against collision of the electronic control board 300; on the other hand, the box body 100 plays an isolated role, the electric control plate 300 is limited in the closed inner cavity 101, water or water vapor is prevented from contacting the electric control plate 300, and the service life of the electric control plate 300 is prolonged.

Because the electric control board 300 is located in the inner cavity 101, heat generated by the electronic components 310 on the electric control board 300 in operation needs to be dissipated, the heat conducting component 200 is designed, the heat conducting component 200 is made of metal materials, a contact part 201 located in the inner cavity 101 is arranged on one side of the heat conducting component 200, a plurality of heat conducting fins 210 are arranged on the other side of the heat conducting component 200, the heat conducting component 200 is in close contact with the box body 100, the plurality of heat conducting fins 210 extend to the outside of the box body 100, the contact part 201 is used for connecting the electronic components 310 of the electric control board 300, heat generated by the electronic components 310 is conducted to the heat conducting component 200 through the contact part 201, most of heat is dissipated through the plurality of heat conducting fins 210, and a small part of heat is conducted to the box body 100, and the heat is dissipated through the box body 100, so that the temperature of the electronic components 310 is reduced, the electronic components 310 are prevented from being damaged due to overtemperature, and the use reliability of the electric control assembly is improved.

The electronic control assembly adopts the electronic control box of the first aspect of the present utility model, the plastic box body 100 is connected with the metal heat conduction component 200, and the contact part 201 of the heat conduction component 200 is connected with the heating electronic component 310, so that the heat of the electronic component 310 is conducted to the heat conduction component 200, on one hand, the heat is radiated by using the plurality of heat conduction fins 210, and on the other hand, part of the heat is conducted to the box body 100, thereby helping the electronic component 310 to cool and facilitating the stable operation of the electronic component 310. Because the contact part 201 is positioned in the inner cavity 101 of the box body 100, the electronic component 310 conducts heat through the heat conducting component 200 without exposing, so that the electronic component 310 is prevented from contacting water vapor due to exposure, and the use reliability is improved; the heat conduction component 200 is utilized to conduct heat, an electric control box made of metal is not needed, the box body 100 is made of plastic, the processing is easy, the cost is low, the assembly cost of an electric control assembly can be reduced, and the economic benefit is improved.

It can be appreciated that the corresponding heat conducting component 200 can be designed according to the shape of the box body 100, for example, the box body 100 is rectangular, the heat conducting component 200 is a rectangular plate adapted to the box body 100, and the larger the contact area between the heat conducting component 200 and the box body 100 is, the higher the heat transfer efficiency is, so that heat can be dissipated.

It is understood that the heat conducting member 200 is embedded in the case 100, and one side of the heat conducting member 200 may be located in the cavity 101 to form the contact portion 201, or one end of the heat conducting member 200 may be located in the cavity 101 to form the contact portion 201. In addition, the heat conducting member 200 may extend to the outer wall of the case 100, so that heat is dissipated by the plurality of heat conducting fins 210 on one hand, and heat is dissipated by the exposed surface of the heat conducting member 200 on the other hand, thereby improving heat dissipation efficiency.

It can be understood that the case 100 is made of plastic, the case 100 is injection molded by a mold, in the injection molding, the heat conducting member 200 and the case 100 are integrally injection molded, and after the plastic is cooled and shaped, the case 100 wraps a part of the heat conducting member 200, so as to achieve the purpose of close contact. As shown in fig. 6 and 7, one side of the heat conducting member 200 is located in the inner cavity 101, and the protrusion forms the contact portion 201, and a plurality of heat conducting fins 210 are disposed on one side of the heat conducting member 200, the plurality of heat conducting fins 210 are exposed outside the case 100, and heat of the electronic component 310 is conducted through the contact portion 201 and the heat conducting member 200, and is dissipated through the plurality of heat conducting fins 210 and the case 100, so as to help the electronic component 310 dissipate heat rapidly. The box body 100 is made of plastic, is integrally formed with the heat conduction component 200 through injection molding, is convenient to process and manufacture, and is convenient to assemble and simplifies the production flow after being formed. A plurality of positioning holes can be formed in the heat conducting component 200, the heat conducting component 200 is accurately positioned by utilizing the cooperation of the positioning holes and the positioning pins of the die, the heat conducting component 200 is prevented from being shifted, the relative positions of the box body 100 and the heat conducting component 200 are ensured to be accurate, and the two are tightly combined.

It can be understood that, considering that the heat conducting component 200 is used to conduct the heat generated by the electronic component 310 to the plurality of heat conducting fins 210 and the box body 100, wherein the contact area between the heat conducting component 200 and the box body 100 is a key element, in design, the peripheral wall of the heat conducting component 200 is wrapped by the box body 100, so that the heat can be conducted through the contact portion between the heat conducting component 200 and the box body 100, and the requirement of heat dissipation rate is met. As shown in fig. 2, the total area of the heat conductive member 200 is several times larger than the area of the contact portion 201, wherein more heat conductive fins 210 can be arranged to facilitate heat dissipation, preferably by 8 to 10 times.

It will be appreciated that, considering that the heat conductive member 200 is effective in rapidly conducting heat, the heat conductive member 200 is made of a metal plate, wherein an aluminum plate is a preferred solution, and has advantages of high heat conductivity, high structural strength, low specific gravity, and the like. One side of the metal plate forms a contact part 201 protruding to the inner cavity for contacting the electronic component 310, and the other side is provided with a plurality of heat conducting fins 210. In the production process, the heat conducting component 200 is manufactured by adopting a casting or extrusion process, then the heat conducting component 200 is placed into an injection mold, the electric control box is manufactured in an injection molding integrated forming mode, the box body 100 and the heat conducting component 200 are in close contact and combined, the structural strength and rigidity of the box body 100 can be further increased by utilizing the metal plate, the deformation of the box body 100 is prevented, and the service life is prolonged.

It can be understood that, as shown in fig. 6 and 7, the insert plate 220 is disposed on the peripheral wall of the heat conducting member 200, and after injection molding, the insert plate 220 is embedded in the box body 100, so that the heat conducting member 200 is tightly combined with the box body 100, and the structure is more stable and reliable. The insert plate 220 has a smaller thickness than the heat conductive member 200, is formed with a step, and is more tightly combined with the case 100, and has a larger contact area.

Referring to fig. 6 and 7, it can be understood that the case 100 is provided with a through hole 102, the through hole 102 penetrates through the inner side and the outer side of the case 100, the heat conducting member 200 is installed in the through hole 102, a contact portion 201 is disposed on one side of the heat conducting member 200 facing the inner cavity 101, a plurality of heat conducting fins 210 are disposed on one side of the heat conducting member 200 facing away from the inner cavity 101, and both the heat conducting member 200 and the plurality of heat conducting fins 210 are exposed, so that heat can be dissipated, and the heat dissipation effect is further improved.

It should be understood that, the periphery of the heat conducting component 200 may be provided with ribs instead of the insert plates 220, so that the box body 100 wraps the ribs, which is beneficial to increasing the contact area between the heat conducting component 200 and the box body 100, accelerating heat conduction, and increasing the structural strength of the heat conducting component 200 by using the ribs, thereby reducing the risk of deformation.

It should be understood that, in order to facilitate heat transfer and processing, the heat conducting member 200 is configured as a rectangular bottom plate, the contact portion 201 is configured as a trapezoid protruding from the bottom plate, and the end surface of the contact portion 201 connected to the bottom plate is greater than or equal to the end surface of the contact portion 201 connected to the electronic component 310, so as to facilitate processing of the tool, and facilitate heat transfer and speed up heat dissipation.

Referring to fig. 2, the bottom plate is provided with a clearance groove 203, the clearance groove 203 is disposed at the periphery of the contact portion 201 to provide a gap to prevent the bottom plate from contacting the pins of the electronic component 310, the depth of the clearance groove 203 is 1mm or more, and the distance between the bottom plate and the pins of the electronic component 310 is 1mm or more, so that a sufficient electrical gap is provided to satisfy the safety requirements.

It will be appreciated that in other embodiments, the heat conducting member 200 is assembled with the case 100, the heat conducting member 200 and the case 100 are manufactured separately, then the heat conducting member 200 is fixed to the bottom wall of the inner cavity 101, so as to achieve a close fit, and the plurality of heat conducting fins 210 extend to the outside of the case 100. The box body 100 may be provided with a through hole 102 matching with a plurality of heat conducting fins 210, and the plurality of heat conducting fins 210 pass through the through hole 102, or the box body 100 may be provided with a plurality of fin holes, the shape of the fin holes is the same as that of the heat conducting fins 210, and just one heat conducting fin 210 can pass through. Considering that the case 100 is a plastic member, the heat conductive member 200 and the case 100 may be fixed by thermal welding while sealing is accomplished to prevent water and moisture from entering the inner cavity 101.

It can be understood that the heat conducting member 200 may be fixed on the outer wall of the case 100, the case 100 is provided with a through hole 102, the heat conducting member 200 covers the through hole 102, and the contact portion 201 of the heat conducting member 200 passes through the through hole 102 and enters the inner cavity 101, and the case 100 may wrap the peripheral wall of the contact portion 201 or leave a gap. Since the heat conducting member 200 and the plurality of heat conducting fins 210 are both located outside the case 100, heat dissipation is facilitated.

Referring to fig. 4 to 6, the plurality of heat conductive fins 210 of the heat conductive member 200 substantially cover the side surface of the heat conductive member 200, and heat generated from the electronic component 310 is transferred to the plurality of heat conductive fins 210 through the contact portion 201 and the heat conductive member 200, and the plurality of heat conductive fins 210 have a large surface area, thereby facilitating heat dissipation. In actual use, the fan may be used to drive the airflow, and the airflow flows through the plurality of heat conducting fins 210, so as to quickly take away heat and improve heat dissipation efficiency.

It can be understood that the plurality of heat conducting fins 210 are arranged in parallel and vertically, heat is dissipated into the air outside the electric control box through the heat conducting fins 210, the air near the heat conducting fins 210 absorbs heat, the temperature rises and the density decreases, and the air can flow upwards automatically to form a buoyancy driving flow, so that heat is taken away, the vertically arranged heat conducting fins 210 are parallel to the gravity direction, the influence on the buoyancy driving flow is minimum, and the heat dissipation is facilitated.

It can be understood that the more heat conducting fins 210 are more beneficial to heat dissipation, and considering that the heat conducting member 200 is rectangular, the heat conducting fins 210 are distributed on the side surface of the heat conducting member 200 to increase the heat dissipation speed.

It can be appreciated that the heat conducting fins 210 and the heat conducting component 200 may be integrally formed, or may be separately formed, for example, the heat conducting component 200 may be integrally formed with a plurality of heat conducting fins 210, which is simple to manufacture and low in cost. The plurality of heat conductive fins 210 may be separate parts and then assembled to the side of the heat conductive member 200, and an appropriate number is selected according to the heat dissipation requirement.

Referring to fig. 1 to 6, an electrical control assembly according to a second aspect of the present utility model includes an electrical control box according to the first aspect of the present utility model, and an electrical control board 300, where the electrical control box includes a box body 100 and a heat conducting member 200, the box body 100 is made of plastic having a heat conductivity coefficient greater than or equal to 0.3W/(m·k), the box body 100 is formed with an inner cavity 101, the electrical control board 300 is located in the inner cavity 101 of the box body 100, and pouring sealant can be injected into the inner cavity 101, and the electrical control board 300 is wrapped with the pouring sealant, so as to prevent the electrical control board 300 from contacting water and being vapor. The heat conductive member 200 is made of a metal material, one side of the heat conductive member 200 is provided with a contact portion 201 located in the inner cavity 101, the other side is provided with a plurality of heat conductive fins 210, the heat conductive member 20 is in close contact with the case 100, and the plurality of heat conductive fins 210 extend to the outside of the case 100. The electric control board 300 is provided with an electronic component 310, the electronic component 310 generates heat during operation, the electronic component 310 is connected with the contact part 201, insulating heat conduction grease can be smeared on the contact part 201, the gap between the electronic component 310 and the contact part 201 is filled with the insulating heat conduction grease, and the insulating heat conduction grease plays roles in insulation and heat conduction. Normally, the electric control board 300 is integrally arranged in the inner cavity 101, and the electric control board 300 is fixedly connected with the box body 100 through screws or buckles, so that on one hand, the box body 100 plays a role in protection, and the electric control board 300 is prevented from being collided; on the other hand, the box body 100 plays an isolated role, the electric control plate 300 is limited in the closed inner cavity 101, water or water vapor is prevented from contacting the electric control plate 300, and the service life of the electric control plate 300 is prolonged.

Because the electric control board 300 is located in the inner cavity 101, heat generated by the electronic components 310 on the electric control board 300 in operation needs to be dissipated, the heat conducting component 200 is in close contact with the box body 100, the contact part 201 is connected with the electronic components 310 of the electric control board 300, the heat generated by the electronic components 310 is conducted to the heat conducting component 200 through the contact part 201, on one hand, the heat is dissipated by the plurality of heat conducting fins 210, on the other hand, part of the heat is conducted to the box body 100, the electronic components 310 are helped to cool, the electronic components 310 are prevented from being damaged due to overtemperature, and the use reliability of the electric control assembly is improved.

The electronic control assembly adopts the electronic control box of the first aspect of the embodiment of the utility model, because the contact part 201 is positioned in the inner cavity 101 of the box body 100, the electronic component 310 can be sealed in the inner cavity 101 to abut against the contact part 201 without exposing, thus preventing the electronic component 310 from contacting water vapor due to exposure and improving the use reliability; the heat conduction component 200 is utilized to conduct heat, an electric control box made of metal is not needed, the box body 100 is made of plastic, the processing is easy, the cost is low, the assembly cost of an electric control assembly can be reduced, and the economic benefit is improved.

Referring to fig. 2 and 5, it can be understood that the contact portion 201 is provided with at least one connection hole 202, and two connection holes 202 are generally provided and are separated at two ends of the contact portion 201, and the electronic component 310 is fixed to the contact portion 201 through the connection holes 202 and the fastener, so as to maintain a tight connection, thereby facilitating heat transfer.

Referring to fig. 1 and 6, it can be appreciated that the case 100 is provided with a plurality of fixing columns 120, the number of the fixing columns 120 is set according to the shape of the inner cavity 101, the plurality of fixing columns 120 are distributed on the bottom wall of the inner cavity 101, and are generally circumferentially spaced, the electronic control board 300 is fixed to the fixing columns 120 by fasteners, and the fasteners can be directly screwed into the fixing columns 120 by bolts. The end surface of the fixing column 120, which contacts with the electric control board 300, is a supporting surface, and in the axial direction of the fixing column 120, the distance between the supporting surface and the contact portion 201 is greater than or equal to the thickness of the electronic component 310, so that the electronic component 310 is sufficiently accommodated, the electric control board 300 is prevented from deforming, and the use stability is improved.

Referring to fig. 8 and 9, a motor assembly according to a third aspect of the present utility model includes a motor body 400 and an electric control assembly according to the second aspect, in which a case 100 of the electric control assembly is provided with an assembling portion 130 facing the motor body 400, the assembling portion 130 and the motor body 400 are fixed by a fastener, or the assembling portion 130 is first inserted into an insertion hole (not shown in the drawings) of the motor body 400 and then fixed by the fastener, so that the motor body 400 and the electric control assembly are cooperatively installed, and other portions of the motor body 400 and the case 100 can be fixed by the fastener.

An embodiment of the fourth aspect of the present utility model provides a washing machine, in which the motor assembly of the embodiment of the third aspect is disposed in the casing of the washing machine, the motor assembly is composed of a motor body 400 and an electric control assembly, the electric control assembly is installed on the outer wall of the motor body 400, and the operation of the motor body 400 is controlled by an electric control board 300 of the electric control assembly. The box body 100 of the electric control assembly is made of plastic, the box body 100 is connected with a heat conduction component 200 made of metal, the contact part 201 of the heat conduction component 200 is positioned in the inner cavity 101 of the box body 100, the electronic component 310 of the electric control plate 300 can be sealed in the inner cavity 101 to abut against the contact part 201 without exposing, the electronic component 310 is prevented from contacting water vapor due to exposure, and the use reliability is improved; the heat conduction component 200 is utilized to conduct heat, an electric control box made of metal is not needed, the box body 100 is made of plastic, the processing is easy, the cost is low, the assembly cost of an electric control assembly can be reduced, and the economic benefit is improved.

It can be understood that the electric control assembly and the motor body 400 are fixed as a whole, the box body 100 of the electric control assembly is provided with the mounting portions 110, the two mounting portions 110 are oppositely arranged at two sides of the box body 100, the mounting portions 110 are fixed on the casing of the washing machine through fasteners such as bolts, the motor body 400 can also be provided with the two mounting portions 110, and the motor body 400 is fixed on the casing of the washing machine through fasteners such as bolts, so that the installation and the fixation of the motor assembly are completed, and the structure is simple and the operation is convenient.

An embodiment of the fifth aspect of the present utility model provides a washing machine, including the electric control assembly of the second aspect, wherein the electric control assembly is separated from the driving motor of the washing machine, and the electric control assembly is installed inside the washing machine and is electrically connected to the driving motor of the washing machine, so as to control the operation of the driving motor. The washing machine has all technical effects of the electric control assembly and will not be described again.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (17)

1. Electric control box, its characterized in that includes:

the box body is made of plastic and is provided with an inner cavity for accommodating the electric control plate;

the heat conduction component is made of metal materials, one side of the heat conduction component is provided with a contact part, the other side of the heat conduction component is provided with a plurality of radiating fins, the heat conduction component is in close contact with the box body, the contact part is positioned in the inner cavity to be connected with electronic components of the electric control board, and the radiating fins extend to the outside of the box body.

2. The electronic control box according to claim 1, wherein the heat conducting component and the box body are integrally injection molded, the box body wraps the heat conducting component, the contact portion protrudes into the inner cavity and is exposed, and the radiating fin protrudes to the outside of the box body and is exposed.

3. The electronic control box according to claim 2, wherein a bottom wall of the inner cavity is provided with a through hole, the heat conducting member is arranged in the through hole, and a peripheral wall of the heat conducting member is connected to an inner wall of the through hole.

4. An electronic control box according to claim 3, characterized in that the peripheral wall of the heat conducting member is provided with a plug-in plate which is embedded in the inner wall of the through-hole.

5. The electronic control box of claim 1, wherein the heat conducting member is disposed in the interior cavity, and wherein the heat conducting member is attached to a bottom wall of the interior cavity.

6. The electronic control cartridge according to any one of claims 1 to 5, wherein a plurality of the heat radiating fins are arranged in parallel and vertically.

7. The electronic control box according to any one of claims 1 to 4, wherein the heat conductive member includes a bottom plate, the contact portion is provided to the bottom plate, and an end face of the contact portion connected to the bottom plate is equal to or more than an end face of the contact portion connected to the electronic component.

8. The electronic control box according to claim 7, wherein the bottom plate is provided with a clearance groove, the clearance groove is arranged at the periphery of the contact portion, and the depth of the clearance groove is 1mm or more.

9. An electrical control assembly comprising an electrical control box as claimed in any one of claims 1 to 8 and an electrical control board located in the cavity, the electrical control board having electronic components connected to the contact.

10. The electrical control assembly of claim 9, wherein an insulating thermal grease is disposed between the electronic component and the contact.

11. The electrical control assembly of claim 9, wherein the contact portion is provided with at least one attachment hole having a fastener disposed therein to secure the electronic component.

12. The electrical control assembly of claim 9, wherein the housing is provided with a plurality of fixed posts, the plurality of fixed posts being circumferentially spaced apart at a bottom wall of the interior cavity, the electrical control plate being secured to the fixed posts by fasteners.

13. The electronic control assembly of claim 12, wherein the fixing post has a supporting surface abutting against the electronic control board, and a distance between the supporting surface and the contact portion is greater than or equal to a thickness of the electronic component along an axial direction of the fixing post.

14. The electrical control assembly of claim 9, wherein the interior cavity is filled with a potting adhesive, the potting adhesive encapsulating the electrical control panel.

15. A motor assembly comprising a motor body and an electrical control assembly as claimed in any one of claims 9 to 14, the electrical control box being provided with an assembly portion facing the motor body, the assembly portion being fixedly connected to the motor body by a fastener.

16. The washing machine is characterized by comprising a machine shell and the motor assembly according to claim 15, wherein a mounting part is arranged on the periphery of the electric control box, and the mounting part is fixedly connected with the machine shell through a fastener.

17. Laundry washing machine, characterized by comprising an electrical control assembly according to any of claims 9 to 14.

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