Compact control box

Abstract

The utility model discloses a compact control box, comprising a housing provided with a mounting cavity and a mounting gap; the first heat dissipation block is fixedly arranged in the mounting cavity and is attached to the inner wall of the shell; the main control module comprises a control panel and a second heat dissipation block arranged on the control panel, the second heat dissipation block is attached to the control panel through an elastic structure, and the control panel is inserted into the mounting cavity along the mounting notch so that the first heat dissipation block and the second heat dissipation block can be attached to achieve heat dissipation. According to the utility model, the problems of high maintenance cost, loud noise and element damage caused by insufficient heat dissipation of the existing compact control box are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to control box technical field especially relates to a compact control box. BACKGROUND

[0002] In the modular control box technical field, especially in the design of compact control box, the heat dissipation problem has been a key factor restricting the performance and reliability of equipment. As the core control unit of electronic equipment, the internal main control chip and electronic components of such control box will generate a large amount of heat during operation. If the heat dissipation is insufficient, it will directly lead to overheating of components, performance reduction, shortened life and even permanent damage.

[0003] The existing compact control box adopts thin fin heat dissipation block plus fan to realize temperature control and heat dissipation. By setting honeycomb-shaped ventilation window on the shell, thin metal fin heat dissipation block is arranged inside, and small fan is equipped to force air flow. Through the design of air duct, heat is discharged. However, the fan is easy to wear and age after long-term operation, which may cause failure and increase maintenance cost. High-power fan can temporarily improve the heat dissipation efficiency, but it will introduce significant noise pollution, affect the use environment, and the thin fin cannot provide enough heat dissipation area in the limited space, so the heat is easy to accumulate in the local fin, which may cause component damage. SUMMARY

[0004] The main purpose of the utility model is to provide a compact control box, which aims to solve the problems of high maintenance cost, high noise and component damage caused by insufficient heat dissipation of the existing compact control box.

[0005] To achieve the above purpose, the utility model provides a compact control box, which comprises:

[0006] The shell is provided with a mounting cavity and a mounting notch.

[0007] The first heat dissipation block is fixedly arranged in the mounting cavity and is attached to the inner wall of the shell.

[0008] The main control module comprises a control board and a second heat dissipation block arranged on the control board. The second heat dissipation block is attached to the control board through an elastic structure. The control board is inserted into the mounting cavity along the mounting notch so that the first heat dissipation block and the second heat dissipation block are attached to realize heat dissipation.

[0009] Optionally, a fixing plate is arranged in the mounting cavity, and a fixing hole for fixing the first heat dissipation block is formed in the fixing plate.

[0010] Optionally, a limiting notch is formed in the fixing plate, and the second heat dissipation block passes through the limiting notch and is in contact with the first heat dissipation block.

[0011] Optionally, the first heat dissipation block is provided with a mounting slot for inserting the second heat dissipation block.

[0012] Optionally, the control board comprises a mounting plate and a circuit board, the circuit board is arranged on the mounting plate, and the control chip is arranged on the circuit board.

[0013] Optionally, the mounting plate comprises a bottom plate and a side plate connected with each other, the bottom plate is provided with a plug-in sleeve for inserting a screw, and the side plate covers and seals the mounting gap.

[0014] Optionally, the second heat dissipation block is provided with a plurality of first screw holes, the circuit board is provided with a plurality of second screw holes, the first screw holes, the second screw holes and the plug-in sleeve are in mutual alignment, the plug-in sleeve and the first screw holes and the second screw holes form a mounting channel for mounting the screw, and the first screw hole is a counterbore.

[0015] Optionally, the elastic structure comprises an elastic member and a screw, the elastic member is sleeved on the rod portion of the screw, and the elastic member is located between the head portion of the screw and the second screw hole.

[0016] Optionally, the contact surfaces of the first heat dissipation block and the shell and the second heat dissipation block are coated with thermal grease, and the contact surfaces of the second heat dissipation block and the control board and the first heat dissipation block are coated with thermal grease.

[0017] Optionally, the shell is made of metal material.

[0018] The utility model discloses a compact control box, which solves the problems of high maintenance cost, large noise and insufficient heat dissipation of the existing compact control box, and prevents the damage of elements caused by insufficient heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings described in the following are only some of the embodiments of the present application, and for the ordinary skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creative labor.

[0020] Fig. 1 It is a structure diagram of a compact control box in the present application;

[0021] Fig. 2 It is an explosion view of a compact control box in the present application;

[0022] Fig. 3 It is an explosion view of a main control module in the present application;

[0023] Fig. 4 It is a sectional view of the main control module inserted in the present application;

[0024] Label explanation:

[0025] 1, shell; 11, mounting cavity; 12, mounting notch; 13, fixed plate; 131, fixed hole;

[0026] 2, main control module; 21, mounting plate; 211, bottom plate; 212, side plate; 213, plug-in sleeve; 22, control board; 221, circuit board; 222, control chip; 223, second screw hole;

[0027] 3, first heat sink; 31, mounting groove;

[0028] 4, second heat sink; 41, first screw hole;

[0029] 5, elastic structure; 51, screw; 52, elastic member;

[0030] The realization, functional characteristics and advantages of the present application will be further described with reference to the drawings. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0032] It should be noted that if the embodiments of the utility model have directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directionality indication also changes accordingly.

[0033] In addition, if the embodiments of the utility model have descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled personnel in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the utility model.

[0034] An embodiment of the utility model provides a kind of compact control box, refer to Figs. 1 to 4 , comprising:

[0035] Shell 1 is provided with installation cavity 11 and installation gap 12;

[0036] First radiating block 3 is fixedly arranged in the installation cavity 11 and is attached to the inner wall of the shell 1;

[0037] Main control module 2 includes control panel 22 and second radiating block 4 arranged on the control panel 22, the second radiating block 4 is attached to the control panel 22 by elastic structure 5, the control panel 22 is inserted into the installation cavity 11 along the installation gap 12 to make the first radiating block 3 and the second radiating block 4 attach to realize heat dissipation.

[0038] The embodiment solves the problems of high maintenance cost, large noise and element damage caused by insufficient heat dissipation of the existing compact control box. The first heat dissipation block 3 is fixedly installed in the mounting cavity 11 of the shell 1 and is attached to the shell 1, and the second heat dissipation block 4 is attached to the control chip 222. The first heat dissipation block 3 and the second heat dissipation block 4 are both coated with thermal conductive silicone grease, which reduces the contact thermal resistance and enables the heat of the control chip 222 to quickly spread to the outside of the shell 1, improves the heat dissipation capacity, and makes the heat dissipation effect better. By inserting the control board 22 into the mounting cavity 11 of the shell 1, the first heat dissipation block 3 and the second heat dissipation block 4 are tightly attached to each other, so that the heat of the control chip 222 is conducted to the outside of the shell 1 through the first heat dissipation block 3 and the second heat dissipation block 4 to achieve heat dissipation. It is convenient to install, and the design without mechanical parts avoids mechanical failure, reduces maintenance cost and eliminates noise. Specifically, the first heat dissipation block 3 is fixedly arranged in the mounting cavity 11 and attached to the inner wall of the top of the shell 1, so that the heat can be conducted to the outside of the shell 1 through the first heat dissipation block 3 to achieve heat dissipation; the second heat dissipation block 4 is elastically attached to the control board 22 through the elastic structure 5. When the control board 22 is inserted into the mounting cavity 11, the first heat dissipation block 3 and the second heat dissipation block 4 are in contact and attached to each other. The second heat dissipation block 4 can always be in close contact with the first heat dissipation block 3 through the elastic structure 5, so that the heat dissipation effect of the control box is better.

[0039] Further, the mounting cavity 11 is provided with a fixed plate 13, and the fixed plate 13 is provided with a fixing hole 131 for fixing the first heat dissipation block 3. In the embodiment, the fixed plate 13 is integrally formed with the shell 1, and the fixed plate 13 is provided with two fixing holes 131 for fixing the first heat dissipation block 3. The first heat dissipation block 3 is fixedly installed on the fixed plate 13 by screws 51. It should be noted that the first heat dissipation block 3 can also be fixed by other means, such as buckling or welding.

[0040] Further, the fixed plate 13 is provided with a limiting gap, and the second heat dissipation block 4 passes through the limiting gap and is in contact with the first heat dissipation block 3. Specifically, the shape of the limiting gap matches the cross-sectional profile of the second heat dissipation block 4, and the width of the limiting gap is slightly larger than the thickness of the second heat dissipation block 4, so as to ensure that when the main control module 2 is inserted, the second heat dissipation block 4 can smoothly pass through the limiting gap and be accurately positioned. The limiting gap extends along the length direction of the fixed plate 13, and the end thereof is aligned with the mounting groove 31 of the first heat dissipation block 3, forming a continuous heat conduction channel.

[0041] Further, the first heat dissipation block 3 is provided with a mounting groove 31 for inserting the second heat dissipation block 4. The mounting groove 31 is a three-sided enclosed structure, including a rear end face, two side walls and a front opening, and its cross section is in the shape of a "n", which matches the shape of the end of the second heat dissipation block 4. The two side walls of the mounting groove 31 laterally constrain the second heat dissipation block 4 to prevent it from shifting during insertion. When the main control module 2 is fully inserted, that is, the end of the second heat dissipation block 4 is in contact with the rear end face of the mounting groove 31, the elastic structure 5 is tightly attached to the inner wall of the mounting groove 31, forming a gapless heat conduction interface.

[0042] In actual assembly, when the main control module 2 is inserted into the mounting cavity 11, the end of the second heat dissipation block 4 enters the mounting groove 31 along the limiting notch of the fixed plate 13, and the two side walls of the mounting groove 31 laterally constrain the second heat dissipation block 4 to prevent it from shifting or tilting. As the control plate 22 continues to advance, the end of the second heat dissipation block 4 gradually embeds into the mounting groove 31 until its end face contacts the rear end face of the mounting groove 31. At this time, the second heat dissipation block 4 is tightly attached to the inner wall of the mounting groove 31, forming a multidirectional heat conduction path. Heat is conducted from the second heat dissipation block 4 to the first heat dissipation block 3, and then diffused to the outside through the contact surface between the first heat dissipation block 3 and the shell 1.

[0043] Further, the control plate 22 includes a mounting plate 21 and a circuit board 221, the circuit board 221 is arranged on the mounting plate 21, and a control chip 222 is arranged on the circuit board 221. The second heat dissipation block 4 is attached to the control chip 222.

[0044] Further, the mounting plate 21 includes a bottom plate 211 and a side plate 212 connected together. The bottom plate 211 is provided with a plug-in sleeve 213 for inserting the elastic structure 5, and the side plate 212 covers and seals the mounting notch 12. The bottom plate 211 is provided with four plug-in sleeves 213 for fixing and guiding the installation of the elastic structure 5. The circuit board 221 and the control chip 222 are mounted on the bottom plate 211, and the second heat dissipation block 4 is arranged on and attached to the control chip 222. The bottom plate 211 can be installed into the mounting cavity 11 through the mounting notch 12 of the shell 1, and the side plate 212 seals the mounting cavity 11 to form a sealed space in the mounting cavity 11 to prevent foreign matter from entering the mounting cavity 11. It should be noted that the height of the side plate 212 is consistent with the height of the mounting notch 12, and the side plate 212 and the shell 1 can be fixed by buckling, or by screws 51 or glue.

[0045] Further, the second heat dissipation block 4 is provided with a plurality of first screw holes 41, and the circuit board 221 is provided with a plurality of second screw holes 223. The first screw holes 41, the second screw holes 223 and the insertion sleeve 213 are in mutual position. The insertion sleeve 213 and the first screw holes 41 and the second screw holes 223 form an installation channel for the elastic structure 5 to pass through. Specifically, the first screw holes 41 are arranged on the periphery of the control chip 222. The first screw holes 41, the second screw holes 223 and the insertion sleeve 213 are in relative position, so that the axes of the first screw holes 41, the second screw holes 223 and the insertion sleeve 213 are on the same straight line, and the installation channel is for the elastic structure 5 to pass through. When the second heat dissipation block 4 is installed on the circuit board 221, the elastic structure 5 passes through the first screw holes 41 and enters the installation channel and is inserted into the insertion sleeve 213 along the installation channel. One end of the elastic structure 5 is embedded in the installation plate 21, and the other end is fixed on the second heat dissipation block 4. In this embodiment, the installation channel is a side-closed channel between the first screw holes 41, the second screw holes 223 and the insertion sleeve 213, for the screw 51 or other installation tools to pass through. The first screw holes 41 are counterbores. The design of the counterbores allows the head of the screw 51 to be completely embedded in the second heat dissipation block 4, avoiding friction or interference between the head of the screw 51 and the surface of the first heat dissipation block 3 or the inner wall of the shell 1, so as to ensure that the contact surface between the first heat dissipation block 3 and the second heat dissipation block 4 can be tightly attached, maintaining efficient heat conduction. The diameter of the first screw holes 41 is slightly larger than the diameter of the elastic structure 5. When the second heat dissipation block 4 is offset during installation or thermal expansion, the second heat dissipation block 4 can be self-adaptively adjusted in position through the elastic structure 5 and the counterbores, so that the second heat dissipation block 4 is always tightly attached to the surface of the control chip 222.

[0046] Further, the elastic structure 5 includes an elastic member 52 and a screw 51. The elastic member 52 is sleeved on the shank of the screw 51 and located between the head of the screw 51 and the second screw hole 223. The screw 51 passes through the first screw hole 41 and the second screw hole 223 and is inserted into the insertion sleeve 213. The elastic member 52 is sleeved on the shank of the screw 51 and located between the head of the screw 51 and the second screw hole 223. When the screw 51 is tightened to fix the second heat dissipation block 4 and the control chip 222, the elastic member 52 is compressed between the head of the screw 51 and the second screw hole 223, forming an axial pre-tightening force, so that the second heat dissipation block 4 and the control chip 222 are tightly attached, ensuring that heat can be efficiently conducted from the control chip 222 to the second heat dissipation block 4. It should be noted that in other embodiments, the elastic structure 5 can also be an elastic buckle, such as a Z-shaped steel sheet.

[0047] Further, the contact surface of the first heat dissipation block 3 and the shell 1 and the second heat dissipation block 4 is coated with thermal conductive silicone grease, and the contact surface of the second heat dissipation block 4 and the control panel 22 and the first heat dissipation block 3 is coated with thermal conductive silicone grease. Thermal conductive silicone grease is a high-performance thermal conductive material, which can not only fill the small gap between the heat generating element and the heat sink, eliminate air and reduce the contact thermal resistance, but also effectively transfer the heat generated by the chip to the heat sink. The two contact surfaces of the first heat dissipation block 3 and the second heat dissipation block 4 are coated with thermal conductive silicone grease, which can fill the gap between the first heat dissipation block 3 and the shell 1, the first heat dissipation block and the second heat dissipation block 4, and the second heat dissipation block 4 and the control chip 222, thereby improving the heat conduction efficiency.

[0048] Further, the shell 1 is made of metal material. The metal material can be stainless steel, aluminum alloy, titanium alloy and nickel-based alloy, etc. The metal shell 1 has good thermal conductivity and can efficiently conduct the heat generated by the internal electronic elements, avoiding local heat accumulation. In addition, the shell 1 made of metal material can resist the erosion of moisture and corrosive substances, protecting the internal circuit and sensor of the monitoring instrument and prolonging the service life of the equipment.

[0049] The above is only an optional embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or directly / indirectly applied in other related technical fields under the concept of the present application is included in the patent protection range of the present application.

Claims

1. A compact control box characterized by, The utility model relates to a main control module fixing device, including: The shell is provided with installation cavity and installation gap; The first radiating block is fixedly arranged in the installation cavity and is attached to the inner wall of the shell; The main control module includes the control panel and the second radiating block arranged on the control panel, the second radiating block is attached to the control panel through the elastic structure, the control panel is inserted into the installation cavity along the installation gap to make the first radiating block and the second radiating block attached to realize radiating.

2. The compact control box of claim 1, wherein, The fixing plate is arranged in the installation cavity, and the fixing hole for fixing the first radiating block is formed in the fixing plate.

3. The compact control box of claim 2, wherein, The limiting gap is formed in the fixing plate, and the second radiating block passes through the limiting gap and is attached to the first radiating block.

4. The compact control box of claim 1, wherein, The first radiating block is arranged in the installation cavity, and the fixing hole for fixing the first radiating block is formed in the fixing plate.

5. The compact control box of claim 1, wherein, The control panel includes the mounting plate and the circuit board, the circuit board is arranged on the mounting plate, the control chip is arranged on the circuit board, and the second radiating block is attached to the control chip.

6. The compact control box of claim 5, wherein, The mounting plate includes the bottom plate and the side plate connected, the plug-in sleeve for inserting the elastic structure is arranged on the bottom plate, and the side plate covers and closes the installation gap.

7. The compact control box of claim 6, wherein, A plurality of first screw holes are formed in the second radiating block, a plurality of second screw holes are formed in the circuit board, the first screw hole, the second screw hole and the plug-in sleeve are mutually aligned, the plug-in sleeve and the first screw hole and the second screw hole form the installation channel for the elastic structure to pass through, and the first screw hole is a counterbore.

8. The compact control box of claim 7, wherein, The elastic structure includes the elastic member and the screw, the elastic member is sleeved on the rod portion of the screw, and the elastic member is located between the head portion of the screw and the second screw hole.

9. The compact control box of claim 1, wherein, The contact surface of the first radiating block attached to the shell and the second radiating block is coated with thermal grease, and the contact surface of the second radiating block attached to the control panel and the first radiating block is coated with thermal grease.

10. The compact control box of claim 1, wherein, The shell is made of metal material.

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