CN215991657U - PCB board protection device and biochemical analyzer - Google Patents
PCB board protection device and biochemical analyzer Download PDFInfo
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- CN215991657U CN215991657U CN202122544081.XU CN202122544081U CN215991657U CN 215991657 U CN215991657 U CN 215991657U CN 202122544081 U CN202122544081 U CN 202122544081U CN 215991657 U CN215991657 U CN 215991657U
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Abstract
The utility model is suitable for the field of medical equipment, and provides a PCB protection device and a biochemical analyzer. The PCB board protection device comprises a module upper shell and a module lower shell; the upper module shell and the lower module shell are buckled to form an accommodating cavity, and the protected PCB is arranged in the accommodating cavity; the module upper shell is abutted to the PCB by adopting at least one structure of the following structures: the first structure: the bottom side of the top surface of the module upper shell is provided with a downward upper bulge, and the upper bulge is abutted against the upper surface of the PCB; the part of the upper bulge, which is contacted with the PCB, is provided with a heat conduction coating layer; a second structure: the upper surface of the PCB is provided with an upward bump; the lug is abutted against the bottom side of the top plate of the upper shell of the module; the part of the lug and the contact of the module upper shell is provided with a heat conduction coating layer. The PCB protection device has the advantages of accurate positioning, simple assembly, space saving, good heat dissipation effect and high structural strength.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to a PCB protection device and a biochemical analyzer.
Background
Biochemical analyzers, which are commonly used in hospitals for biochemical detection and analysis of blood, body fluids, etc., belong to an important class of medical equipment.
A plurality of PCBs exist on medical equipment, and currently, the PCBs are mostly protected by wrapping the PCBs by a simple injection molding shell, and the protection can only protect the PCBs from physical damage; such a protective casing has the following drawbacks:
the connection mode between the injection molding shell and the PCB is unstable;
after the PCB is arranged in the injection molding piece shell, the position is unstable, which may cause the PCB to shift in the injection molding piece;
(II) poor heat dissipation;
when the injection molding piece shell wraps the circuit board, in order to avoid dust from entering the inner cavity, a full wrapping mode is usually adopted; this results in poor heat dissipation from the housing; if the radiating fins are added for increasing the radiating effect, the size of the whole structure is increased, and a larger installation space is needed;
(III) poor safety
The circuit board has a certain risk of leakage.
SUMMERY OF THE UTILITY MODEL
The utility model provides a PCB protection device and a biochemical analyzer, and aims to provide a PCB protection device which has excellent stability and good heat dissipation effect and forms grounding protection for a circuit board, and a biochemical analyzer adopting the PCB protection device.
In order to realize the purpose, the utility model adopts the following technical scheme to realize the purpose:
a PCB board protection device comprises a module upper shell and a module lower shell;
the upper module shell and the lower module shell are buckled to form an accommodating cavity, and the protected PCB is arranged in the accommodating cavity;
the module upper shell is abutted to the PCB by adopting at least one structure of the following structures:
the first structure: a downward upper bulge is arranged on the bottom side of the top surface of the module upper shell and abuts against the upper surface of the PCB; the part of the upper bulge, which is in contact with the PCB, is provided with a heat conduction coating layer;
a second structure: the upper surface of the PCB is provided with an upward bump; the lug is abutted against the bottom side of the top plate of the upper shell of the module; the part of the lug and the contact of the module upper shell is provided with a heat conduction coating layer.
The heat that the PCB board produced passes through the heat conduction coating layer and transmits to the module epitheca, and the module epitheca is to dispelling the heat in the air in order to reduce the temperature that holds the intracavity.
Further, the upper surface of the module upper shell is provided with a heat dissipation component or the module upper shell is connected with a heat dissipation part; the heat dissipation part can be a heat dissipation fin or a heat dissipation fin, or other parts for increasing the heat dissipation area.
Furthermore, an upper shell through hole is formed in the module upper shell;
a limiting through hole is formed in the position, corresponding to the upper shell through hole, of the PCB; the inner side surface of the limiting through hole is tightly attached to the screw to limit the screw; a lower bulge is convexly arranged on the lower module shell towards the accommodating cavity corresponding to the position of the limiting through hole; the middle part of the lower bulge is provided with a blind hole, and blind hole threads are arranged in the blind hole; the tail part of the screw penetrates through the upper shell through hole and the limiting through hole in sequence and is screwed in the blind hole in the middle of the lower bulge. The module upper shell, the PCB and the module lower shell are simultaneously fixed by the screws, and the fixing mode is matched with the clamping connection between the module upper shell and the module lower shell to form a stable connection mode, so that the displacement of the PCB is avoided; can set up a plurality of screws and rather than supporting epitheca through-hole, spacing through-hole, the blind hole increases overall structure intensity.
Furthermore, the aperture of the upper shell through hole is larger than the aperture of the limiting through hole and the aperture of the blind hole; when the screw penetrates through the upper shell through hole, a gap exists between the screw and the inner side face of the upper shell through hole. Because the gap still exists between the screws after the screws penetrate through the upper shell of the module, the PCB can flow with the outside air through the gap, and the temperature of the accommodating cavity is reduced.
Further, the heat dissipation component is a plurality of heat dissipation convex ribs arranged in parallel;
and the heat dissipation surface area paved with the heat dissipation convex ribs is covered with the upper shell through hole. The contact area between the radiating ribs and air is increased, and heat dissipation is accelerated; and the area of laying the heat dissipation convex edge covers the upper shell through hole, so that the PCB has larger air circulation space with the outside in the area of the upper shell through hole, and the heat dissipation efficiency is accelerated.
Furthermore, the PCB board comprises a terminal interface, and the position of the module upper shell corresponding to the terminal interface is a notch for avoiding the terminal interface;
the notch edge and at least one upper shell through hole have a partial intersection area; so as to increase the air circulation space between the PCB and the outside in the area of the through hole of the upper shell.
Furthermore, a boss-shaped through hole concave column is convexly arranged in the accommodating cavity of the module upper shell, and the through hole concave column is abutted against the PCB;
the upper shell through hole is arranged in the middle of the through hole concave column; the lower bulge is in a boss shape; the through hole concave column and the lower bulge are respectively abutted against the upper surface and the lower surface of the PCB; the upper bulges, the through hole concave columns and the lower bulges can position the PCB and prevent the PCB from shifting; and the arrangement of the lug boss increases the contact area between the upper lug boss, the through hole concave column and the lower lug boss and the PCB, so that the butting is firmer.
Further, the PCB board includes a terminal interface; a plurality of terminal interfaces forming a row; a surrounding plate is arranged on the PCB and surrounds a row of terminal interfaces;
the lower module shell is provided with a step part corresponding to the position of the surrounding plate and extending towards the direction of the accommodating cavity, and the step part is abutted against the lower end of the surrounding plate, so that the lower end of the lower module shell supporting terminal interface forms grounding protection; step portion has supported the terminal interface on the one hand, has increased overall structure's intensity, and on the other hand has reduced the risk that the electric leakage caused because terminal interface lower extreme and module inferior valve upper surface contact have formed ground protection.
Furthermore, the side wall of the module upper shell is clamped with the side wall of the module lower shell; to enhance the overall structural strength.
A biochemical analyzer comprises the PCB board protection device.
The utility model has the beneficial effects that:
1. the device has accurate positioning, simple assembly and space saving;
the PCB is accurately placed on the lower module shell through the limiting through holes on the PCB corresponding to the blind holes on the lower module shell; covering the upper shell of the module on the PCB through the corresponding upper shell through hole on the upper shell of the module and the limiting through hole on the PCB, and then penetrating and screwing the screw; therefore, the positioning is accurate and the assembly is simple; and the whole structure is compact, and the installation space is saved.
2. The heat dissipation effect is good;
the heat generated by the PCB is transferred to the upper shell of the module through the heat-conducting coating layer, and the upper shell of the module radiates the heat to the air so as to reduce the temperature in the accommodating cavity; the upper surface of the module upper shell is a radiating surface or is connected with a radiating part, so that the radiating area of the module upper shell is increased;
when the screw penetrates through the through hole of the upper shell, a gap is formed between the screw and the inner side surface of the through hole of the upper shell; the PCB can flow with the outside air through the gap, so that the temperature of the accommodating cavity is reduced;
the radiating ribs are laid in the through hole area of the upper shell, so that the space for air circulation between the PCB and the outside is increased, and the radiating speed is accelerated;
the edge of the module upper shell notch and at least one upper shell through hole have a partial intersection area, so that the space for generating air circulation between the PCB and the outside is further increased.
3. The structure strength is high, the PCB is firmly positioned, and the displacement of the PCB is avoided;
the side wall of the upper module shell is clamped with the side wall of the lower module shell, and the upper module shell and the lower module shell are connected into a whole to wrap the PCB;
the upper bulges, the through hole concave columns and the lower bulges are abutted against the PCB to position the PCB, so that the displacement of the PCB is avoided; meanwhile, as the upper bulge, the through hole concave column and the lower bulge are all in a boss shape, the contact area between the upper bulge, the through hole concave column and the PCB is increased, and the butting is firmer;
the screws sequentially penetrate through the upper shell through holes and the limiting through holes and are in threaded connection with the blind holes in the middle of the lower bulges, so that the module upper shell, the PCB and the module lower shell are simultaneously and firmly fixed by the screws; not only the integral structural strength is enhanced, but also the displacement of the PCB is avoided;
the terminal interface is supported by the step part, and the strength of the whole structure is increased.
4. The risk of electric leakage of the PCB is reduced;
because the contact of terminal interface lower extreme and module inferior valve upper surface has formed ground protection, has reduced the risk that the electric leakage caused.
In conclusion, the PCB protection device has the advantages of accurate positioning, simple assembly, space saving, good heat dissipation effect, high structural strength, prevention of the displacement of the PCB and reduction of the risk of electric leakage of the PCB; the biochemical analyzer adopting the PCB protection device also has the advantages.
Drawings
Fig. 1 is an exploded view of a PCB panel protecting apparatus;
FIG. 2 is a schematic structural view of an upper housing of the module;
FIG. 3 is a lower view of the upper housing of the module;
fig. 4 is a bottom view of the PCB board.
In the figure: 1. a module upper shell; 2. a module lower case; 3. a PCB board; 4. an upper bulge; 5. an upper shell through hole; 6. a lower bulge; 7. blind holes; 8. a limiting through hole; 9. a heat-dissipating rib; 10. a terminal interface; 11. a notch; 12. a through hole recessed column; 13. a bump; 14. wrapping the plate; 15. a step portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
Example 1
As shown in fig. 1 to 4, a PCB protection device includes a module upper case 1 and a module lower case 2;
the module upper shell 1 and the module lower shell 2 are buckled to form an accommodating cavity, and the protected PCB 3 is arranged in the accommodating cavity;
the module upper shell is abutted to the PCB by adopting at least one structure of the following structures:
the first structure: a downward upper bulge 4 is arranged on the bottom side of the top surface of the module upper shell 1, and the upper bulge 4 is abutted against the upper surface of the PCB 3; the part of the upper bulge, which is in contact with the PCB, is provided with a heat conduction coating layer;
a second structure: an upward bump 13 is arranged on the upper surface of the PCB 3; the lug 13 abuts against the bottom side of the top plate of the upper shell of the module; the part of the lug and the contact of the module upper shell is provided with a heat conduction coating layer.
The heat that the PCB board produced passes through the heat conduction coating layer and transmits to the module epitheca, and the module epitheca is to dispelling the heat in the air in order to reduce the temperature that holds the intracavity.
Further, the upper surface of the module upper shell is provided with a heat dissipation component or the module upper shell is connected with a heat dissipation part; the heat dissipation part can be a heat dissipation fin or a heat dissipation fin, or other parts for increasing the heat dissipation area.
Furthermore, an upper shell through hole 5 is formed in the upper shell of the module;
a limiting through hole 8 is formed in the position, corresponding to the upper shell through hole 5, of the PCB; the inner side surface of the limiting through hole 8 is tightly attached to the screw to limit the screw; a lower bulge 6 is convexly arranged on the module lower shell 2 corresponding to the position of the limiting through hole 8 towards the accommodating cavity; the middle part of the lower bulge 6 is provided with a blind hole 7, and blind hole threads are arranged in the blind hole 7; the tail part of the screw sequentially penetrates through the upper shell through hole 5 and the limiting through hole and is screwed in the blind hole 7 in the middle of the lower bulge 6. The module upper shell, the PCB and the module lower shell are simultaneously and firmly fixed by the screws, and the fixing mode is matched with the clamping connection between the module upper shell and the module lower shell to form a stable connection mode, so that the displacement of the PCB is avoided; can set up a plurality of screws and rather than supporting epitheca through-hole, spacing through-hole, the blind hole increases overall structure intensity.
In the embodiment, the number of the upper shell through holes is two, and the number of the blind holes is two; the positions of two epitheca through-holes setting are the same with the position of 42 step motor afterbody screws, conveniently with this protection device direct mount at 42 motor afterbody, do not need extra installation fixed position, also can reduce the length of connecting wire when saving space.
Furthermore, the aperture of the upper shell through hole is larger than the aperture of the limiting through hole and the aperture of the blind hole; when the screw penetrates through the upper shell through hole, a gap exists between the screw and the inner side face of the upper shell through hole. Because the gap still exists between the screws after the screws penetrate through the upper shell of the module, the PCB can flow with the outside air through the gap, and the temperature of the accommodating cavity is reduced.
Further, the heat dissipation component is a plurality of heat dissipation ribs 9 arranged in parallel;
the radiating surface area where the radiating ribs 9 are laid covers the upper shell through hole. The contact area between the radiating convex ribs 9 and air is increased, and heat dissipation is accelerated; and the area of laying the heat dissipation convex edge covers the upper shell through hole, so that the PCB has larger air circulation space with the outside in the area of the upper shell through hole, and the heat dissipation efficiency is accelerated. In addition, strip-shaped bulges can be laid on the back surface (close to the lower module shell) of the PCB, so that the heat dissipation effect is improved.
Further, the PCB board includes a terminal interface 10, and the position of the module upper case corresponding to the terminal interface 10 is a notch 11 for avoiding the terminal interface 10;
the edge of the notch 11 and at least one upper shell through hole have a partial intersection area; so as to increase the air circulation space between the PCB and the outside in the area of the through hole of the upper shell.
Furthermore, a boss-shaped through hole concave column 12 is convexly arranged in the accommodating cavity of the module upper shell, and the through hole concave column 12 is abutted to the PCB;
the upper shell through hole is arranged in the middle of the through hole concave column 12; the lower bulge is in a boss shape; the through hole concave column and the lower bulge are respectively abutted against the upper surface and the lower surface of the PCB; the upper bulges, the through hole concave columns and the lower bulges can position the PCB and prevent the PCB from shifting; and the arrangement of the lug boss increases the contact area between the upper lug boss, the through hole concave column and the lower lug boss and the PCB, so that the butting is firmer.
Further, the PCB board includes a terminal interface; a plurality of terminal interfaces forming a row; a surrounding plate 14 is arranged on the PCB and surrounds a row of terminal interfaces;
a step part 15 extends from the position of the lower module shell corresponding to the enclosing plate 14 to the direction of the accommodating cavity, and the step part 15 is abutted against the lower end of the enclosing plate 14, so that the lower end of the lower module shell supporting terminal interface forms grounding protection; step portion 15 has supported the terminal interface on the one hand, has increased overall structure's intensity, and on the other hand has reduced the risk that the electric leakage caused because terminal interface lower extreme and module inferior valve upper surface contact have formed ground protection.
Furthermore, the side wall of the module upper shell is clamped with the side wall of the module lower shell; to enhance the overall structural strength.
A biochemical analyzer comprises the PCB board protection device.
The specific assembling process of the device is as follows: the PCB is accurately placed on the lower module shell through the limiting through holes on the PCB corresponding to the blind holes on the lower module shell; the upper shell of the module is buckled on the PCB through the upper shell through hole on the upper shell of the module corresponding to the limiting through hole on the PCB, and then the upper shell of the module passes through the screw and is screwed tightly.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the utility model as defined in the appended claims.
Claims (10)
1. A PCB board protection device is characterized by comprising a module upper shell (1) and a module lower shell (2);
the module upper shell (1) and the module lower shell (2) are buckled to form an accommodating cavity, and the protected PCB (3) is arranged in the accommodating cavity;
the module upper shell is abutted to the PCB by adopting at least one structure of the following structures:
the first structure: a downward upper bulge (4) is arranged on the bottom side of the top surface of the module upper shell (1), and the upper bulge (4) is abutted against the upper surface of the PCB (3); the part of the upper bulge (4) in contact with the PCB (3) is provided with a heat conduction coating layer;
a second structure: an upward bump (13) is arranged on the upper surface of the PCB (3); the lug (13) is abutted against the bottom side of the top plate of the module upper shell (1); the part of the bump (13) contacting with the module upper shell (1) is provided with a heat conducting coating layer.
2. A PCB protection device according to claim 1, wherein the module upper case (1) has a heat dissipation member on its upper surface or the module upper case (1) is connected to a heat dissipation part.
3. A PCB board protection device according to claim 1, wherein the module upper case (1) is provided with an upper case through hole (5);
a limiting through hole (8) is formed in the position, corresponding to the upper shell through hole (5), of the PCB; a lower bulge (6) is convexly arranged on the module lower shell (2) towards the accommodating cavity corresponding to the position of the limiting through hole (8); a blind hole (7) is formed in the middle of the lower bulge (6), and blind hole threads are formed in the blind hole (7); the tail part of the screw sequentially penetrates through the upper shell through hole (5) and the limiting through hole (8) and is screwed in the blind hole (7) in the middle of the lower bulge (6).
4. A PCB protection device according to claim 3, wherein the aperture of the upper case through hole (5) is larger than the aperture of the limit through hole (8) and the aperture of the blind hole (7); when the screw penetrates through the upper shell through hole (5), a gap exists between the screw and the inner side face of the upper shell through hole (5).
5. A PCB protection device according to claim 2, wherein the heat dissipating member is a plurality of heat dissipating ribs (9) arranged in parallel;
the area where the heat dissipation ribs (9) are laid covers the upper shell through hole (5).
6. A PCB board protection device according to claim 1, wherein the PCB board comprises a terminal interface (10), and the module upper case (1) is located corresponding to the terminal interface (10) to avoid the notch (11) of the terminal interface (10);
the edge of the notch (11) and at least one upper shell through hole (5) have a partial intersection area.
7. A PCB protection device according to claim 3, wherein the module upper case (1) is further provided with a through hole concave pillar (12) protruding into the accommodating cavity, and the through hole concave pillar (12) abuts against the PCB;
the upper shell through hole (5) is arranged in the middle of the through hole concave column (12); the lower bulge (6) is in a boss shape; the through hole concave column (12) and the lower bulge (6) are respectively abutted to the upper surface and the lower surface of the PCB.
8. A PCB protection device according to claim 1, wherein the PCB comprises a terminal interface (10), and a surrounding plate (14) is arranged on the PCB around the terminal interface (10);
module inferior valve (2) correspond bounding wall (14) position and extend to holding the chamber direction and be equipped with step portion (15), step portion (15) butt joint bounding wall (14) lower extreme makes module inferior valve (2) support terminal interface (10) lower extreme and forms ground protection.
9. A PCB protection device according to claim 7, characterized in that the side wall of the module upper case (1) is clamped with the side wall of the module lower case (2).
10. A biochemical analyzer, comprising the PCB board protecting apparatus of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122544081.XU CN215991657U (en) | 2021-10-20 | 2021-10-20 | PCB board protection device and biochemical analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122544081.XU CN215991657U (en) | 2021-10-20 | 2021-10-20 | PCB board protection device and biochemical analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215991657U true CN215991657U (en) | 2022-03-08 |
Family
ID=80573744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122544081.XU Active CN215991657U (en) | 2021-10-20 | 2021-10-20 | PCB board protection device and biochemical analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215991657U (en) |
-
2021
- 2021-10-20 CN CN202122544081.XU patent/CN215991657U/en active Active
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