CN216218470U

CN216218470U - Control box

Info

Publication number: CN216218470U
Application number: CN202122678500.9U
Authority: CN
Inventors: 牛涛
Original assignee: NINGBO DEYE FREQUENCY CONVERSION TECHNOLOGY CO LTD
Current assignee: NINGBO DEYE FREQUENCY CONVERSION TECHNOLOGY CO LTD
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-04-05
Anticipated expiration: 2031-11-03

Abstract

The control box comprises a box body and a cover plate, wherein the printed circuit board is provided with a heating body which can generate heat when being electrified and operated, one part of the bottom wall of the box body is inwards protruded, so that a convex dike for placing the printed circuit board is formed in the inner cavity of the box body, and correspondingly, a concave is formed on the outer wall of the bottom of the box body; a boss for a heating body on the printed circuit board to be attached is arranged on the convex embankment, and a heat dissipation rib sheet is arranged at the sunken position of the outer wall of the bottom of the box body; the utility model effectively solves the heat dissipation problem of the control box, has simple structure, reliable function and good heat dissipation performance, and is simple and easy to install and operate.

Description

Control box

Technical Field

The utility model belongs to the technical field of control box heat dissipation, and relates to a control box, in particular to a heat dissipation structure of a shell box of the control box.

Background

The equipment driven by the motor is usually configured with a control circuit, and various electrical components in the control circuit are usually placed in a control box, wherein various display instruments and indicator lamps are exposed on the outer surface of the control box, so that the equipment is convenient for an operator to operate and use. Traditional control box volume is great, along with the development of chip technique, usually with control circuit centralized arrangement printed circuit board at present, install printed circuit board in the control box, the control box is small and control circuit's function promotes greatly. However, a heat generating member is often present in the printed circuit board, and the chip is often the main heat generating member in the printed circuit board while highly concentrating the complex circuit. During the continuous work of the equipment, the heating element in the printed circuit board can continuously generate heat, if heat dissipation is not tried, the temperature in the cavity of the control box can continuously rise, the work of the control circuit can be seriously influenced, even a part of chips or components are burnt out, and huge loss can be caused.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a control box scheme with a shell box having good heat dissipation performance in view of the technical current situation.

The technical scheme adopted by the control box is as follows:

a control box comprises a shell box and a printed circuit board arranged in the shell box, wherein the shell box comprises a box body and a cover plate, and the printed circuit board is provided with a heating body which can generate heat when being electrified and operated; the convex embankment is provided with a boss for the attachment of a heating body on the printed circuit board, and the sunken part of the outer wall of the bottom of the box body is provided with a radiating rib sheet.

The following is a further scheme of the control box of the utility model:

the height of a section of the middle radiating rib sheet is lower than that of other parts of the radiating rib sheet to form a low sheet area, and the low sheet area is provided with a fan which is electrically connected with the printed circuit board.

The heat dissipation fins are arranged in an extending mode along the wind channel, so that wind blown out by the fan is blown out to the two-way outlets of the wind channel through the low fin area.

The bottom wall where the convex dike of the inner cavity of the box body is positioned is partially protruded outwards, and triangular convex ribs are formed on the outer wall of the box body bottom in the low sheet area and are used as boundary ridges for blowing air blown by the fan to the two-way outlets of the air channel respectively; the outer wall of the bottom of the box body in the low sheet area forms a triangular convex rib which corresponds to a triangular groove left on a convex embankment in the inner cavity of the box body.

A fan thread hole is formed in the bottom wall of the box body where the convex dike is located, a fan thread is led out from the printed circuit board and penetrates through the fan thread hole to be connected with the fan; the lower end wall of the box body is provided with a plurality of external wiring through holes, and the fan wiring through holes and each external wiring through hole are respectively plugged into corresponding connector lugs.

The inner cavity of the box body is provided with a plurality of protruding columns, each protruding column is provided with a connecting hole for fixedly mounting a printed circuit board, the printed circuit board is also provided with a corresponding connecting hole, and the printed circuit board and the connecting holes are fixedly connected through screws.

The edge openings of the four corners of the box body are provided with connecting holes for fixedly installing cover plates, and the four corners of each cover plate are also provided with corresponding connecting holes.

The one side of apron sets up 2 round pin axles from top to bottom, 2 lugs about the corresponding one side of box sets up, and every lug is seted up and is supplied the round pin axle inserts pivoted shaft hole.

The outer wall sets up a plurality of local extension walls at the bottom of the box, sets up the connecting hole that is used for with casing case fixed mounting on the upright wall in use place on every local extension wall.

The display panel is attached to the back of the cover plate and is electrically connected with the printed circuit board; the display panel is provided with a parameter display block, a plurality of indicator lamps and a plurality of keys, the cover plate is provided with a notch for embedding the parameter display block, a plurality of through holes for inserting the keys, and the parameter display block, the indicator lamps and the keys on the display panel respectively penetrate through the notch of the cover plate and protrude out of the through holes.

A part of the bottom wall of the box body of the control box is inwards protruded, so that a convex dike for placing a printed circuit board is formed in the inner cavity of the box body, correspondingly, a concave is formed on the outer wall of the bottom of the box body, a boss is arranged on the convex dike and is attached to a heating body on the printed circuit board, and a radiating rib sheet is arranged at the concave position of the outer wall of the bottom of the box body. The heat dissipation problem of control box has been solved effectively. The utility model has simple structure, reliable function and good heat dissipation performance. During the continuous work of the equipment, the temperature in the cavity of the control box can be ensured to be within an allowable range. The shell box of the control box can be produced in large scale by adopting an aluminum die casting process, and the cost is low. In addition, the control box is simple and easy to install and operate.

Drawings

Fig. 1 is an overall perspective view of the control box of the present invention.

Fig. 2 is a perspective view of the whole back of the control box of the utility model.

Fig. 3 is a perspective view illustrating the state of the whole hidden cover plate assembly of the control box.

Fig. 4 is a perspective view of the case.

Fig. 5 is a perspective view of the back of the box.

Fig. 6 is an external perspective view of the cover plate assembly.

Fig. 7 is a perspective view of the inside of the cover plate assembly.

Fig. 8 is a perspective view illustrating a state where the cover plate of the cover plate assembly is separated from the display panel.

Fig. 9 is a perspective view of a printed circuit board.

Reference numbers in the figures: 1. a housing case; 2. a printed circuit board; 3. a box body; 4. a cover plate; 5. a convex dike; 6. recessing; 7. a boss; 8. heat dissipation fins; 9. a low slice region; 10. a fan; 11. a triangular groove; 12. a fan thread hole; 13. a threading hole is externally connected; 14. a connector lug; 15. a raised post; 16. a pin shaft; 17. a lug; 18. a shaft hole; 19. a partially extending wall; 20. connecting holes; 21. a display panel; 22. a parameter display block; 23. an indicator light; 24. pressing a key; 25. a via hole; 26. a notch; 27. and (3) a chip.

Detailed Description

The control box scheme of the utility model can be used for various control boxes needing heat dissipation. The following describes an embodiment of the present invention, taking a solar water pump control box shown in fig. 1 to 9 as an example.

A solar water pump control box comprises a shell box 1 and a printed circuit board 2 installed in the shell box 1, as shown in figures 1 and 2, the shell box 1 comprises a box body 3 and a cover plate 4, and the box body 3 and the cover plate 4 can be made of aluminum die castings. As shown in fig. 9, the printed circuit board 2 has a heating element which generates heat when it is energized, and the heating element is mainly 3 chips 27; the 3 chips 27 are in the form of a block, and the upper surface thereof is flat. As shown in fig. 3, 4 and 5, a part of the bottom wall of the box body 3 protrudes inwards, so that a convex embankment 5 for placing the printed circuit board 2 is formed in the inner cavity of the box body 3, and correspondingly, a concave 6 is formed on the outer wall of the bottom of the box body 3; the convex embankment 5 is provided with a boss 7 for the attachment of a heating body on the printed circuit board 2, and the outer wall depression 6 at the bottom of the box body 3 is provided with a radiating rib sheet 8.

As shown in fig. 5 or fig. 2, the height of a section of the heat dissipating fins 8 in the recess 6 of the bottom outer wall of the box 3 is lower than that of the other parts to form a low fin area 9, a fan 10 is disposed in the low fin area 9, and the fan 10 is electrically connected to the printed circuit board 2. The depression 6 formed by the outer wall of the bottom of the box body 3 penetrates through the whole box body 3 to form an air channel with a bidirectional outlet, and the radiating fins 8 are arranged in an extending mode along the air channel, so that air blown out by the fan 10 is blown out towards the bidirectional outlet of the air channel through the low fin area 9 respectively.

The bottom wall of the box body 3 where the convex dike 5 is positioned is partially protruded outwards, and a triangular convex rib is formed on the outer wall of the bottom of the box body 3 in the low sheet area 9 and is used as a boundary ridge for blowing wind blown by the fan 10 to the two-way outlet of the wind channel respectively. The outer wall of the bottom of the box body 3 of the low sheet area 9 forms a triangular convex rib which corresponds to a triangular groove 11 left on a convex dike 5 in the inner cavity of the box body 3.

As shown in fig. 4 and 5, a fan thread hole 12 is formed in the bottom wall of the case 3 where the convex dike 5 is located, a fan thread is led out from the printed circuit board 2, and passes through the fan thread hole 12 to be connected with the fan 10; the lower end wall of the box body 3 is provided with a plurality of external threading holes 13, and the fan threading holes 12 and each external threading hole 13 are respectively plugged into corresponding connector lugs 14.

As shown in fig. 3 and 4, a plurality of protruding columns 15 are disposed in the inner cavity of the box 3, each protruding column 15 is provided with a connecting hole 20 for fixedly mounting the printed circuit board 2, and the printed circuit board 2 is also provided with a corresponding connecting hole 20, and the two are fixedly connected by screws.

As shown in fig. 4 and 5, the four corner edges of the box body 3 are provided with connecting holes 20 for fixedly mounting the cover plate 4; as shown in fig. 6 and 7, the cover plate 4 is also provided with corresponding connecting holes 20 at four corners, and the two are connected by screws.

As shown in fig. 6 and 7, an upper pin shaft 16 and a lower pin shaft 16 are arranged on one side of the cover plate 4; as shown in fig. 4 and 5, an upper lug and a lower lug 17 are disposed on the corresponding side of the box body 3, and each lug 17 is provided with a shaft hole 18 for inserting the pin 16 for rotation. The two are connected by inserting the connecting pin 16 into the shaft hole 18, and the cover plate 4 can rotate around the shaft hole 18 of the box body 3.

As shown in fig. 4 and 5, the bottom outer wall of the box body 3 is provided with a plurality of partially extending walls 19, each partially extending wall 19 is provided with a connecting hole 20, and the housing box 1 is fixedly mounted on the vertical wall of the use place when in use. When the heat dissipation box is used, the front face of the shell box 1 faces outwards, the operation is convenient, and the outer wall of the bottom of the box body 3 faces towards the vertical wall of a use place, so that the heat dissipation is not influenced.

As shown in fig. 7, a display panel 21 is attached to the back of the cover plate 4, and the display panel 21 is electrically connected to the printed circuit board 2. As shown in fig. 8, the display panel 21 is provided with a parameter display block 22, a plurality of indicator lamps 23, and a plurality of keys 24, and the cover plate 4 is provided with a notch 26 into which the parameter display block 22 is inserted, and a plurality of through holes 25 into which the indicator lamps 23 and the keys 24 are inserted. As shown in fig. 6, the parameter display block 22, the plurality of indicator lights 23, and the plurality of keys 24 on the display panel 21 protrude through the notches 26 and the plurality of through holes 25 of the cover plate 4.

When the printed circuit board 2 is installed, the 3 chips 27 are attached to the boss 7, and heat-conducting silicone grease can be filled between the chips and the boss 7; specifically, the surfaces of the two can be respectively covered with heat-conducting silicone grease, or one of the surfaces can be covered with heat-conducting silicone grease, and then the printed circuit board 2 is fixedly installed in the housing case 1 on the premise of jointing the two, and the related electrical connection is completed. Thus, the heat conductivity between the 3 chips 27 and the bosses 7 can be more ensured, and the heat radiation performance of the control box can be more ensured.

All references to left, right, up, down, front, rear, etc. in this specification are to be understood as being relative to the drawings attached to this specification, for convenience of description, and not as limiting the utility model. The plural in the present specification means at least 2, that is, 2 or more, and also includes 2.

Claims

1. A control box comprises a shell box (1) and a printed circuit board (2) arranged in the shell box (1), wherein the shell box (1) comprises a box body (3) and a cover plate (4), the printed circuit board (2) is provided with a heating body which can generate heat when being electrified and operated, and the control box is characterized in that one part of the bottom wall of the box body (3) protrudes inwards, so that a convex embankment (5) for placing the printed circuit board (2) is formed in the inner cavity of the box body (3), and correspondingly, a concave pit (6) is formed on the outer wall of the bottom of the box body (3); set up boss (7) that supply the heat-generating body laminating on printed circuit board (2) above convex embankment (5) the outer wall is sunken (6) department sets up heat dissipation fin (8) at the bottom of box (3).

2. The control box of claim 1, characterized in that the height of the middle section of the radiating rib (8) is lower than that of the other parts to form a lower area (9), the lower area (9) is provided with a fan (10), and the fan (10) is electrically connected with the printed circuit board (2).

3. The control box according to claim 2, characterized in that the recess (6) formed on the outer wall of the bottom of the box body (3) extends through the whole box body (3) to form a wind channel with a bidirectional outlet, and the radiating fins (8) are arranged along the wind channel in an extending way, so that the wind blown by the fan (10) is blown out to the bidirectional outlet of the wind channel through the low fin area (9).

4. The control box according to claim 3, characterized in that the bottom wall of the convex embankment (5) in the inner cavity of the box body (3) is partially convex outwards, and triangular convex ribs are formed on the outer wall of the bottom of the box body (3) in the low-sheet area (9) and are used as the boundary ridges of the wind blown by the fan (10) towards the two-way outlet of the wind channel; the outer wall of the bottom of the box body (3) of the low sheet area (9) forms a triangular convex rib which corresponds to a triangular groove (11) left on a convex dike (5) in the inner cavity of the box body (3).

5. The control box of claim 2, characterized in that the bottom wall of the convex dike (5) of the box body (3) is provided with a fan thread hole (12), fan threads are led out from the printed circuit board (2), and the fan (10) is connected through the fan thread hole (12); a plurality of external wiring threading holes (13) are formed in the lower end wall of the box body (3), and the fan wiring threading holes (12) and the external wiring threading holes (13) are plugged into corresponding connector lugs (14) respectively.

6. The control box according to claim 1, characterized in that a plurality of protruding columns (15) are arranged in the inner cavity of the box body (3), each protruding column (15) is provided with a connecting hole (20) for fixedly mounting the printed circuit board (2), the printed circuit board (2) is also provided with a corresponding connecting hole (20), and the two are fixedly connected by screws.

7. The control box according to claim 1, characterized in that the four corners of the box body (3) are provided with connecting holes (20) for fixedly mounting the cover plate (4), and the four corners of the cover plate (4) are also provided with corresponding connecting holes (20).

8. The control box according to claim 1, characterized in that one side of the cover plate (4) is provided with 2 upper and lower pins (16), the corresponding side of the box body (3) is provided with 2 upper and lower lugs (17), and each lug (17) is provided with a shaft hole (18) for inserting and rotating the pin (16).

9. The control box according to claim 1, characterized in that the bottom outer wall of the box body (3) is provided with a plurality of partially extending walls (19), and each partially extending wall (19) is provided with a connecting hole (20) for fixedly mounting the housing box (1) on the upright wall of the use place.

10. The control box according to claim 1, characterized in that a display panel (21) is attached to the back of the cover plate (4), the display panel (21) being electrically connected to the printed circuit board (2); the display panel (21) is provided with a parameter display block (22), a plurality of indicator lamps (23) and a plurality of keys (24), the cover plate (4) is provided with a notch (26) and the indicator lamps (23) for embedding the parameter display block (22) and a plurality of through holes (25) for inserting the keys (24), and the parameter display block (22), the indicator lamps (23) and the keys (24) on the display panel (21) respectively penetrate through the notch (26) and the through holes (25) of the cover plate (4) and protrude outwards.