CN111787731A - Control box and its assembly method, electrical equipment - Google Patents

Abstract

The invention provides a control box, an assembling method thereof and electric equipment, wherein the control box comprises a box body, a control assembly, a fastening structure and a radiator, wherein a limiting groove is formed at the bottom of the box body, the fastening structure is arranged in the box body and is used for fastening a printed circuit board in the box body, a distance is formed between the printed circuit board and the limiting groove, one end of the radiator is arranged in the limiting groove, and the other end of the radiator is connected with the component. The control box is more compact in structure, the whole assembly process is simpler, the assembly time can be shortened, and the cost can be reduced.

Description

Control box and its assembly method, electrical equipment

technical field

The invention relates to the technical field of household appliances, in particular to a control box, an assembling method thereof, and electrical equipment.

Background technique

Existing home appliances or other electrical appliances, such as refrigerators, range hoods, dishwashers, compressors, etc., are generally equipped with control boxes for controlling these appliances. In the existing control box, the controller is generally arranged in the box. The controller is generally composed of a printed circuit board and components welded on the printed circuit board. Some components need to be dissipated. For these components, the radiator It needs to be connected to the corresponding components by screws in advance, the components and the heat sink form an integral structure and then soldered to the printed circuit board, and then the printed circuit board is installed in the box to form the final control box.

In the process of manufacturing and assembling the control box, the radiator and the components need to be connected first to form an integral structure, and then the integral structure needs to be welded to the printed circuit board, which is complicated and time-consuming. Loss of screws is also expensive, especially when there are many components that need to be dissipated, it takes longer and costs more.

SUMMARY OF THE INVENTION

The invention discloses a control box, an assembling method thereof, and electrical equipment, which are used to solve the problems of long assembling time and high cost existing in the existing control box.

According to a first aspect, an embodiment provides a control box, comprising:

a box body, the bottom of the box body forms a limiting groove;

a control assembly, the control assembly is arranged in the box body, and the control assembly includes a printed circuit board and components arranged on the printed circuit board;

A fastening structure, which is arranged in the box body and is used to fasten the printed circuit board in the box body, so that a distance is formed between the printed circuit board and the limiting groove ;

and a heat sink, one end of the heat sink is arranged in the limiting groove, and the other end is connected with the component.

In some embodiments of the control box, the fastening structure includes a first fastening structure and/or a second fastening structure for forming a connection with the bottom of the printed circuit board , the second fastening structure is used to form a connection with the top of the printed circuit board.

In some embodiments of the control box, the first fastening structure includes a mounting post and a fastener protruding from the bottom of the box body, the fastener being able to pass through the printed circuit board and extend into the mounting post.

In some embodiments of the control box, the second fastening structure includes a pressing block convexly disposed on the side wall of the box body to press against the top of the printed circuit board.

In some embodiments of the control box, the printed circuit board is a single panel, the components are soldered on the bottom of the printed circuit board, and the control assembly further includes traces and thermally conductive connectors. The device is connected to the thermally conductive connector through the trace, and the other end of the heat sink is connected to the thermally conductive connector.

In some embodiments of the control box, the thermally conductive connector has a green oil window design.

In some embodiments of the control box, the printed circuit board is a multi-layer board, the components are soldered on top of the printed circuit board, and the control assembly further includes vias, transition connections, and thermally conductive connections The component is connected to the thermally conductive connector through the via hole and the transition connector, and the other end of the heat sink is connected to the thermally conductive connector.

In some embodiments of the control box, the thermally conductive connector has a green oil window design.

In some embodiments of the control box, thermally conductive silicone grease is further provided on the top of the heat sink.

In some embodiments of the control box, a limit slot is defined on the side wall of the printed circuit board, and the box body is further provided with a rib matched with the limit slot, so that the printed circuit board is arranged in accordance with the A predetermined orientation is mounted into the casing.

According to a second aspect, an embodiment provides a method for assembling a control box, comprising:

installing the heat sink into the limiting groove, so that one end of the heat sink is limited in the limiting groove;

The control assembly is fastened in the box body by the fastening structure, so that the other end of the heat sink is connected with the components in the control assembly.

According to a third aspect, an embodiment provides an electrical device including the control box according to the first aspect of the present invention.

Implementing the embodiment of the present invention will have the following beneficial effects:

According to the control box and the assembling method thereof, and the electrical equipment in the above embodiments, since a limiting groove is formed at the bottom of the box body, when assembling the control box, one end of the radiator can be installed into the limiting groove first. Then, the control assembly is fastened into the box body through the fastening structure, and the other end of the heat sink is connected with the components in the control assembly, thereby realizing the heat dissipation of the components. Compared with the structure of the traditional control box and its assembling method, the control box in the embodiment of the present invention is more compact in structure, and at the same time, the process of connecting the radiator and the components into an integral structure and the integration of the integral structure are omitted. The process of soldering to the printed circuit board makes the entire assembly process simpler, reducing assembly time and reducing costs.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

in:

1 shows a schematic structural diagram of a control box provided according to an embodiment of the present invention;

FIG. 2 shows a top view of a control box provided according to an embodiment of the present invention;

FIG. 3 shows a schematic structural diagram of a printed circuit board provided according to an embodiment of the present invention;

FIG. 4 shows a schematic structural diagram of another printed circuit board provided according to an embodiment of the present invention;

FIG. 5 shows a schematic structural diagram of a heat sink provided according to an embodiment of the present invention;

FIG. 6 shows a schematic structural diagram of another control box provided according to an embodiment of the present invention;

FIG. 7 shows a top view of another control box provided according to an embodiment of the present invention;

FIG. 8 shows a schematic structural diagram of another heat sink provided according to an embodiment of the present invention;

FIG. 9 shows a schematic structural diagram of another printed circuit board provided according to an embodiment of the present invention.

Description of main component symbols:

100-box body; 200-control assembly; 300-fastening structure; 400-radiator; 110-limiting groove; 120-rib; 210-printed circuit board; 220-component; 230-thermal connection; 310-first fastening structure; 320-second fastening structure; 410-central base column; 420-radiation fins; 311-installation column; 321-pressing block.

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

An embodiment of the present invention provides an electrical device, which is not limited to some household appliances such as a refrigerator, a range hood, and a dishwasher, but can also be some industrial equipment such as a compressor.

In this embodiment of the present invention, the electrical equipment includes a control box, which is used to control the electrical equipment, such as switch control, or function selection control.

The embodiment of the present invention also provides a control box, which can be applied to the aforementioned electrical equipment or other equipment. The control box is designed in structure to shorten the assembly cycle and effectively reduce the manufacturing cost. cost.

In the embodiment of the present invention, please refer to FIGS. 1-3 , the control box includes a box body 100 , a control assembly 200 , a fastening structure 300 and a heat sink 400 .

The box body 100 provides an accommodating space, and the control assembly 200 , the fastening structure 300 and the heat sink 400 are all arranged in the accommodating space.

It can be understood that the box body 100 is provided with a control button or a control panel that is electrically connected to the control assembly 200 , and the control box can be controlled by pressing the control button or touching the control panel.

Meanwhile, please refer to FIG. 2 , a limiting groove 110 is formed at the bottom of the box body 100 , and the limiting groove 110 is used to limit one end of the heat sink 400 .

It can be understood that the limiting groove 110 can be opened at the center position of the bottom of the box body 100, and can also be opened at other positions at the bottom of the box body 100. For example, in the example shown in FIG. 2, the limiting groove 110 It is opened in the upper left corner of the bottom of the box body 100 .

Please refer to FIG. 3 , the control assembly 200 is disposed in the box body 100 , and the control assembly 200 includes a printed circuit board 210 and components 220 disposed on the printed circuit board 210 .

The fastening structure 300 is disposed in the box body 100 and used to fasten the printed circuit board 210 in the box body 100 so that a distance is formed between the printed circuit board 210 and the limiting groove 110 .

The heat sink 400 has two ends, one end of which is disposed in the limiting groove 110 , and the other end is connected to the component 220 .

In the embodiment of the present invention, since the limiting groove 110 is formed at the bottom of the box body 100, when assembling the control box, one end of the radiator 400 can be installed into the limiting groove 110 first, and then pass through the control box. The fastening structure 300 fastens the control assembly 200 into the box body 100 , and connects the other end of the heat sink 400 with the components 220 in the control assembly 200 , thereby realizing heat dissipation of the components 220 . Compared with the structure of the traditional control box and its assembling method, the control box in the embodiment of the present invention is more compact in structure, because the process of connecting the radiator 400 and the component 220 into an integral structure and the The process of soldering the structure to the printed circuit board makes the entire assembly process simpler, which can shorten assembly time and reduce costs.

In one embodiment, please refer to FIGS. 1-2 , the fastening structure 300 includes a first fastening structure 310 , and the first fastening structure 310 is used for connecting with the bottom of the printed circuit board 210 (in the orientation shown in FIG. Example) making connections to secure the printed circuit board 210 within the case 100.

Specifically, the first fastening structure 310 includes a mounting post 311 and a fastener (not shown in the figure) protrudingly disposed on the bottom of the box body 100 . The mounting post 311 can be cylindrical, and is provided with a Threaded holes, the fasteners may be screws or the like, the fasteners may pass through the printed circuit board 210 and extend into the mounting posts 311 .

In another embodiment, referring to FIGS. 1-2 , the fastening structure 300 includes a second fastening structure 320 for connecting with the top of the printed circuit board 210 (in the orientation shown in FIG. 1 ). example) to form connections to secure the printed circuit board 210 within the case 100 .

Specifically, the second fastening structure 320 includes a pressing block 321 protrudingly disposed on the side wall of the box body 100 . Fasten. The specific structure of the pressing block 321 is not limited, for example, it can be configured to have a triangular cross section, as shown in the example of FIG. 1 . Of course, the pressing block 321 can also be configured into various other structures, for example, the cross section is square.

In yet another embodiment, the fastening structure 300 may include the aforementioned first fastening structure 310 and the aforementioned second fastening structure 320 at the same time, so that the fastening structure 300 can form a fastening on the bottom and the top of the printed circuit board 210, The printed circuit board 210 can be more stably located in the box body 100 .

It should be noted that, for the aforementioned mounting posts 311 and pressing blocks 321, it is preferable to make their hardness less than that of the printed circuit board 210. For example, they can be made of soft materials, such as rubber, etc. When the printed circuit board 210 is mounted, the printed circuit board 210 will not be damaged.

In addition, the specific numbers and positions of the mounting posts 311 and the pressing blocks 321 can be designed according to the size of the printed circuit board 210 and the height of the heat sink 400 . For example, when the size of the printed circuit board 210 is large, the mounting posts 311 can be appropriately increased. and the number of the pressing blocks 321, otherwise, the number of the mounting posts 311 and the pressing blocks 321 can be appropriately reduced. When the height of the heat sink 400 is high, in order to leave a sufficient distance between the printed circuit board 210 and the limiting groove 110, the height of the mounting post 311 is correspondingly high, and the pressing block 321 can be arranged on the box body 100 is higher relative to its bottom.

In addition, the mounting post 311 and the pressing block 321 may be integrally formed on the box body 100 , for example, the box body 100 with the mounting post 311 and the pressing block 321 may be integrally formed by injection molding. The mounting column 311 and the pressure block 321 can also be designed separately from the box body 100 , that is, the box body 100 , the mounting column 311 and the pressure block 321 are produced respectively, and the mounting column 311 and the pressure block 321 are connected to the box body in the subsequent process. 100 can be.

For the box body 100, its specific structure and size should not be limited. For example, it can be adaptively designed according to the structure of the printed circuit board 210. For example, when the printed circuit board 210 is square, rectangular, or circular, the corresponding The box body 100 may be designed as a cube, a rectangular parallelepiped or a cylinder.

On the other hand, in some embodiments, please refer to FIG. 2 , in order to enable the printed circuit board 210 to be installed in the box body 100 in a correct manner, a limiting groove (not shown in the figure) is defined on the side wall of the printed circuit board 210 out), the box body 100 is further provided with a rib 120 matched with the limiting groove, so as to install the printed circuit board 210 into the box body 100 according to a predetermined orientation.

In one embodiment, please refer to FIG. 3 , the printed circuit board 210 is a single panel, the components 220 are soldered on the bottom of the printed circuit board 210 , and the control assembly 200 further includes traces (not shown in the figure) and thermally conductive connections The component 220 is connected to the thermally conductive connecting member 230 through wiring, and the other end of the heat sink 400 is connected to the thermally conductive connecting member 230 .

It should be noted here that "the bottom of the printed circuit board 210" refers to the side of the printed circuit board 210 facing the heat sink 400. Specifically, the connection between the components 220 and the printed circuit board 210 can be realized by reflow soldering. 220 can be well connected to the heat sink 400 by being arranged on this side. It is also noted that the control assembly 200 also includes wirings and thermally conductive connectors 230, both of which are disposed on the printed circuit board 210, and the thermally conductive connectors 230 can be made of copper sheets or other materials with good thermal conductivity. At this time, the component 220 conducts heat to the heat sink 400 through the thermally conductive connector 230, so as to realize the heat dissipation of the component 220.

Further, in some specific embodiments, when the thermally conductive connector 230 is made of copper skin, the copper skin can be treated with green oil window opening (green oil window opening refers to the printing of the solder mask layer, where there is a via hole). Windows are opened in all places to expose the pads at both ends of the via), so as to facilitate the full contact between the heat sink 400 and the copper skin and enhance the heat conduction capability.

In another embodiment, please refer to FIG. 4 , the printed circuit board 210 is a multi-layer board, the components 220 are soldered on the top of the printed circuit board 210 , and the control assembly 200 further includes vias, transition connectors and thermally conductive connectors 230 , the component 220 is connected to the thermally conductive connector 230 through the via hole and the transition connector, and the other end of the heat sink 400 is connected to the thermally conductive connector 230 .

It should be noted here that "the top of the printed circuit board 210" refers to the side of the printed circuit board 210 facing away from the heat sink 400, and the component 220 can also be connected to the printed circuit board 210 by reflow soldering. The vias and transition connectors here play the role of routing in the foregoing embodiment, and the thermally conductive connectors 230 can also be made of materials with good thermal conductivity such as copper sheets. At this time, the heat of the components 220 can pass through. The holes and the transition connecting piece are transmitted to the thermally conductive connecting piece 230 , and then the thermally conducting connecting piece 230 is conducted to the heat sink 400 , so as to realize the heat dissipation of the component 220 .

Further, in some specific embodiments, when the thermally conductive connector 230 is made of copper skin, the copper skin can be treated with green oil to open the window, so that the heat sink 400 and the copper skin can be fully contacted and the heat conduction capability is enhanced.

In one embodiment, please refer to FIG. 5 , the heat sink 400 includes a central base post 410 and a plurality of heat dissipation fins 420 extending outwardly from two sides of the central base post 410 , and adjacent to the same side. There is a gap between the two heat dissipation fins 420, so that the heat sink 400 can dissipate the heat conducted from the components 220 in multiple directions, and the heat dissipation effect is good.

As mentioned above, one end of the heat sink 400 is installed in the limiting groove 110. To ensure the stability of the heat sink 400 in the limiting groove 110, the limiting groove 110 should be designed to match the heat sink 400. The shape of the end, for example, when the heat sink 400 adopts the structural form shown in FIG. 5 , the limiting groove 110 may be in a square shape. It can be understood that, in the embodiment in which the heat sink 400 adopts other structural forms, such as a cylinder, the limiting groove 110 can be adaptively designed. The other end of the heat sink 400 is connected to the components 220 on the printed circuit board 210, or connected to the aforementioned thermally conductive connector 230. In order to improve the tightness of the connection and ensure the heat transfer efficiency, the other end of the heat sink 400 can be coated with A layer of thermal grease.

In some cases, for example, when a certain component 220 needs a high heat dissipation requirement, in order to meet this requirement, it is generally necessary to increase the heat dissipation area of the heat sink 400, which will lead to the same control component 200, Different heat sinks 400 may need to be equipped, which not only leads to a more complicated assembly process, but also needs to design different heat sinks 400, and the production process also becomes more complicated.

In this regard, in an embodiment of the present invention, please refer to FIGS. 6-8 , two limiting grooves 110 are formed at the bottom of the box body 100 , and the two limiting grooves 110 are identical and are arranged in a straight line and connected to each other. , each limiting groove 110 is provided with a radiator 400, and the two radiators 400 are closely attached to each other. At this time, the two radiators 400 are also made to have the same structure.

Therefore, the radiator 400 can be standardized in design. When a higher heat dissipation requirement is required, the radiator 400 only needs to be added, the assembly becomes simple and easy, and the production process can also be effectively simplified.

In order to match the two heat sinks 400 , please refer to FIG. 9 , two thermally conductive connectors 230 are designed on the printed circuit board 210 (here, a single panel is taken as an example), and the components 220 are in thermally conductive connection with the two places. If the components 230 are connected to each other, for example, it is in the middle of the two thermally conductive connectors 230 . At this time, it can be understood that the heat emitted by the components 220 can be transferred to the two radiators 400 via the two thermally conductive connectors 230 . , so that the heat can be quickly dissipated.

It can be understood that the above-mentioned specific numbers and arrangements of the limiting grooves 110 and the heat sink 400 are only for illustration, and it can be understood that in other embodiments, the bottom of the box body 100 may form more The positioning grooves 110 are, for example, three, four, etc., and these positioning grooves 110 can be arranged in a straight line, can also be arranged in a cross shape, or can be arranged in other ways.

The embodiment of the present invention also provides a method for assembling a control box, and the assembling method includes the following steps:

S100 , install the heat sink 400 into the limiting groove 110 , so that one end of the heat sink 400 is limited in the limiting groove 110 .

As shown in FIG. 1 , during installation, the heat sink 400 is put into the limiting groove 110 , and one end of the heat sink 400 is limited by the limiting groove 110 , which can prevent the heat sink 400 from being subsequently assembled due to Displacement occurs due to the interference of the process.

S200 , the control assembly 200 is fastened in the box body 100 through the fastening structure 300 , so that the other end of the heat sink 400 is connected to the component 220 in the control assembly 200 .

In this step S200, it can be understood that, under the action of the fastening structure 300, the control assembly 200 can limit the other end of the heat sink 400, and can establish a connection between the heat sink 400 and the control assembly 200 at the same time. On the one hand, the compactness of the overall structure of the control box can be ensured, and on the other hand, the heat dissipation effect of the radiator 400 can be fully exerted.

In the present invention, when assembling the control box, it is only necessary to complete the assembly of the radiator 400 and the control assembly 200, the whole process is simple and easy, and the assembly time can be greatly shortened.

In some embodiments, in order to improve the heat dissipation performance, a step S110 may be further included between the step S100 and the step S200: coating the other end of the heat sink 400 with thermally conductive silicone grease.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims (10)

1. Control box, its characterized in that includes:

the bottom of the box body is provided with a limiting groove;

the control assembly is arranged in the box body and comprises a printed circuit board and components arranged on the printed circuit board;

the fastening structure is arranged in the box body and used for fastening the printed circuit board in the box body, so that a distance is formed between the printed circuit board and the limiting groove;

and one end of the radiator is arranged in the limiting groove, and the other end of the radiator is connected with the component.

2. The control box of claim 1, wherein the fastening structure comprises a first fastening structure for making a connection with a bottom of the printed circuit board and/or a second fastening structure for making a connection with a top of the printed circuit board.

3. The control box of claim 2, wherein the first fastening structure includes a mounting post that protrudes at the bottom of the box body and a fastener that can pass through the printed circuit board and extend into the mounting post.

4. The control box of claim 2, wherein the second fastening structure comprises a press block protruding from a sidewall of the box body to press against a top of the printed circuit board.

5. The control box of any of claims 1-4, wherein the printed circuit board is a single-sided board, the component is soldered to a bottom of the printed circuit board, the control assembly further comprises a trace and a thermally conductive connector, the component is connected to the thermally conductive connector through the trace, and the other end of the heat sink is connected to the thermally conductive connector.

6. The control box of any of claims 1-4, wherein the printed circuit board is a multi-layer board, the component is soldered on top of the printed circuit board, the control assembly further comprises a via, a transition connector, and a thermally conductive connector, the component is connected to the thermally conductive connector through the via and the transition connector, and the other end of the heat spreader is connected to the thermally conductive connector.

7. The control box of any of claims 1-4, wherein the top of the heat sink is further provided with a thermally conductive silicone grease.

8. The control box according to any one of claims 1 to 4, wherein the side wall of the printed circuit board is provided with a limiting groove, and the box body is further provided with a rib which is matched with the limiting groove so as to mount the printed circuit board into the box body according to a predetermined orientation.

9. The method of assembling a control box according to any one of claims 1 to 8, comprising:

mounting the radiator into the limiting groove, so that one end of the radiator is limited in the limiting groove;

and the control assembly is fastened in the box body through the fastening structure, so that the other end of the radiator is connected with the component in the control assembly.

10. An electric consumer, characterized in that it comprises a control box according to any one of claims 1-8.

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