A protective shell and heat dissipation protection structure

Abstract

The utility model provides a protective shell and a heat dissipation protection structure. The protective shell is used to protect the power tube, and specifically includes a base. The base is provided with a plurality of first through holes along its thickness direction, and the first through holes are used for the pins of the power tube to pass through. The base is provided with a plurality of accommodating spaces on one side along its thickness direction, and the plurality of accommodating spaces are arranged corresponding to the plurality of first through holes, and the accommodating spaces are connected to the first through holes. The protective shell in the present application can wrap the pins of the power tube to isolate the pins from the external environment, and also realizes the positioning of the plurality of power tubes, so that the deviation between the pins is reduced, and finally the accommodating space can be used to place the insulating part of the power tube. The protective shell provided in the present application does not need to wrap the radiator and the PCB board together, so the volume of the overall device is not increased.

Description

Technical Field

[0001] The utility model belongs to the field of electrical technology, and in particular relates to a protective shell and a heat dissipation protection structure. Background Art

[0002] There are usually multiple power tubes installed on the PCB board. The exposed pins of the power tubes are an important cause of failure. For example, the pins of the power tubes are corroded, and dust accumulates near the pins of the power tubes, causing discharge and sparking. The existing solutions are either to seal the metal part between the PCB and the power tube by putting a silicone sleeve on each power tube to achieve protection. The processing is time-consuming. If it is installed horizontally, a larger operating space (travel space for the silicone sleeve) is required to achieve it. Or the entire radiator and power tube are wrapped. But no matter which method is used, the product volume is increased.

[0003] In addition, the power tube is installed on the radiator for heat dissipation. The more power tubes are installed on the same radiator, the more pins there are, and the more difficult it is to insert. As the number of pins of the power tube increases, the relative deviation requirements for the pins are higher. In the production and handling process, the pins are accidentally deformed and difficult to correct, which makes it difficult to insert the plug-in, and it is easy to have defects such as the pins cannot be inserted into place. Utility Model Content

[0004] The technical purpose of the utility model is to provide a protective shell, which aims to reduce the risk of failure of the pins of the power tube and to reduce the position deviation of multiple pins when multiple power tubes are installed.

[0005] In order to solve the above technical problems, the utility model is implemented as follows: the present application provides a protective shell for protecting a power tube, the power tube includes an insulating portion and a pin, the pin is bent, one end of the pin is connected to the insulating portion, and the other end is connected to the PCB board, and is characterized in that it includes:

[0006] The base is provided with a plurality of first through holes along the thickness direction thereof, and the first through holes are used for the pins of the power tube to pass through;

[0007] A plurality of accommodating spaces are arranged on one side of the base along the thickness direction thereof, and at least one corresponding first through hole is arranged on the side of each accommodating space.

[0008] In one embodiment, the base includes a bottom shell and a plurality of partitions, the partitions extend from one side of the bottom shell along the thickness direction thereof, the plurality of partitions are arranged at intervals along the plane direction of the bottom shell, and the bottom shell and the plurality of partitions are arranged to form a plurality of accommodating spaces.

[0009] In one embodiment, the base is provided with a plurality of first pin seats, the plurality of first pin seats and the plurality of first through holes are arranged in one-to-one correspondence, and the first pin seats extend from the other side of the base away from the accommodation space along the thickness direction thereof;

[0010] A second through hole of the same size is provided on the first pin seat, and the second through hole is coaxially connected with the first through hole.

[0011] In one of the embodiments, the base is hollowed out to form a plurality of hollowed-out surfaces, and the plurality of hollowed-out surfaces are arranged corresponding to the plurality of accommodating spaces, and the area of ​​the hollowed-out surfaces is configured to be smaller than the area of ​​the insulating portion of the power tube.

[0012] In one embodiment, the bottom shell is provided with a plurality of second pin seats, the plurality of second pin seats and the plurality of second through holes are arranged in one-to-one correspondence, and the second pin seats extend from the bottom shell toward the other side of the partition along the thickness direction thereof;

[0013] The second pin seat is provided with a third through hole of the same size, and the third through hole is coaxially connected with the second through hole.

[0014] In one embodiment, a surface of the second pin seat facing away from the bottom shell is coated with adhesive for bonding to the PCB board.

[0015] In one embodiment, the partition includes a partition plate and a limit plate, and the distance between two adjacent partition plates is configured to be greater than the distance between two opposite end surfaces of the insulating portion of the power tube;

[0016] The limiting plate extends along the partition plate into the accommodating space, and the limiting plate is configured to be close to the end surface of the insulating portion of the power tube.

[0017] In one of the embodiments, a chamfer is provided at an edge of the bottom shell facing away from the partition.

[0018] The present application also provides a heat dissipation protection structure, comprising the protective shell in any one of the above embodiments, and further comprising a heat sink, a ceramic substrate, a power tube and a PCB board, wherein the insulating portion of the power tube is located in the accommodating space of the protective shell, and the pin of the power tube passes through the first through hole of the protective shell and extends from the other side to be electrically connected to the PCB board;

[0019] The heat sink is located on the other side of the power tube away from the PCB board, one side of the ceramic substrate is attached to the end of the insulating part away from the PCB board, and the other side of the ceramic substrate is attached to the end of the heat sink facing the insulating part.

[0020] In one embodiment, the outermost partition of the protective shell is in contact with the radiator, and a ventilation hole is provided on the outermost partition.

[0021] Compared with the prior art, the protective shell in the utility model has the following beneficial effects: the protective shell in the utility model can wrap the pins of the power tube to isolate the pins from the external environment, and also realizes the positioning of multiple power tubes, so that the deviation between the pins is reduced, and finally the accommodation space can be used to place the insulating part of the power tube. The protective shell provided by the utility model does not need to wrap the radiator and the PCB board together, and does not increase the volume of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the protective shell in the embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the power tube;

[0024] Figure 3 This is a schematic diagram of the structure of the protective shell close to the PCB board;

[0025] Figure 4 yes Figure 2 Enlarged view of point A in the middle.

[0026] In the accompanying drawings, the various reference numerals represent: protective shell 100; bottom shell 110; partition 120; partition plate 121; limit plate 122; air vent 123; accommodating space 130; first pin seat 140; second pin seat 150; hollow surface 160; power tube 200; pin 210; insulating part 220; ceramic substrate 300. DETAILED DESCRIPTION

[0027] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] The present application provides a total protective shell 100, see Figure 1 , Figure 1 The protective shell 100 is used to protect the power tube 200. Figure 2 , Figure 2 The schematic diagram of the structure of the power tube 200 is shown. Figure 2 It can be seen that the power tube 200 includes a pin 210 and an insulating portion 220. The pin 210 is bent, one end of the pin 210 is connected to the insulating portion 220, and the other end is connected to the PCB board. The pin portion before bending is parallel to the plane direction of the insulating portion, and the pin portion after bending is perpendicular to the plane direction of the insulating portion. Figure 1 In the protective housing, a total of 16 accommodation spaces 130 are provided for placing 16 power tubes 200. For easy viewing, Figure 1 There are four accommodating spaces where no power tubes 200 are placed.

[0031] The protective shell 100 provided in the present application includes a base, which can be regarded as a plate with a certain thickness, and a plurality of first through holes are provided along the thickness direction of the base, and the first through holes are used for the pins 210 of the power tube 200 to pass through. A plurality of accommodating spaces 130 are provided on one side of the base along the thickness direction thereof, and the plurality of accommodating spaces 130 are arranged corresponding to the plurality of first through holes, and the accommodating spaces 130 are connected to the first through holes.

[0032] In the above embodiment, the number of first through holes corresponding to each accommodating space 130 is determined according to the number of pins 210 of the power tube 200. The number of first through holes corresponding to each accommodating space 130 is the same as the number of pins 210 of the power tube 200. In this embodiment, the number of pins 210 of the power tube 200 is two. In other embodiments, when the number of pins 210 is other numbers, the number of first through holes opened in a targeted manner can be sufficient.

[0033] The protective shell 100 in the present application can wrap the pins 210 of the power tube 200 to isolate the pins 210 from the external environment, and also realizes the positioning of multiple power tubes 200 to reduce the deviation between the pins 210. Finally, the accommodating space 130 can be used to place the insulating part 220 of the power tube 200. The protective shell 100 provided in the present application is not for the heat sink and PCB, and does not increase the volume of the overall device.

[0034] In some other embodiments, the bending portion of the pin 210 does not necessarily have to be 90°, and can be an obtuse angle or an acute angle. It only needs to specifically change the angle between the axis of the first through hole and the thickness direction of the base.

[0035] participate Figure 1 In one embodiment, the base includes a bottom shell 110 and a plurality of partitions 120 , the partitions 120 extend from one side of the bottom shell 110 along its thickness direction, the plurality of partitions 120 are arranged at intervals along the plane direction of the bottom shell 110 , and the bottom shell 110 and the plurality of partitions 120 are arranged to form a plurality of accommodating spaces 130 .

[0036] Specifically, the bottom shell 110 serves as the bottom wall of the accommodating space 130, and the partition 120 serves as the side wall of the accommodating space 130. Since the power tube 200 is solid, the partition 120 only needs to play a limiting and partitioning role, and does not need to be 360° surrounding, so as to reduce the weight and production cost of the protective shell 100.

[0037] In other embodiments, the accommodating space 130 may be provided by opening a groove on the base, and in this case, the base replaces the function of the partition 120 .

[0038] In one embodiment, the base is provided with a plurality of first pin seats 140, and the plurality of first pin seats 140 and the plurality of first through holes are arranged in one-to-one correspondence, and the first pin seats 140 extend from the other side of the base away from the partition 120 along its thickness direction, and the first pin seats 140 are provided with a second through hole of the same size, and the second through hole is coaxially connected with the first through hole.

[0039] See also Figure 3 , Figure 3 The protective housing 100 is shown as a perspective view away from the power tube 200. Figure 3 It can be seen that the first pin seat 140 protrudes from the plane of the bottom shell 110. In other words, the first pin seat 140 extends the distance of the through hole, so that the length of the pin 210 of the power tube 200 in the through hole is longer. This has three advantages: first, the longer pin 210 can be isolated; second, the total thickness of the bottom shell 110 can be reduced, and the weight and cost of the protective shell 100 can be reduced; third, the first pin seat 140 pushes the bottom shell 110 and the PCB board away by some distance, so that there is some space between the bottom shell 110 and the PCB, and these spaces can be used for heat dissipation and wiring of the PCB board.

[0040] Preferably, see Figure 1 In one embodiment, the base is hollowed out to form a plurality of hollow surfaces 160 , and the plurality of hollow surfaces 160 are arranged corresponding to the plurality of accommodating spaces 130 , and the area of ​​the hollow surfaces 160 is configured to be smaller than the area of ​​the insulating portion 220 of the power tube 200 .

[0041] Specifically, from Figure 1 It can be seen from the four empty accommodating spaces 130 that the accommodating space 130 is connected to the other side of the bottom shell 110 through the hollow surface 160, which can increase air flow and facilitate the heat dissipation of the power tube 200 and the PCB board. Secondly, it can reduce the weight of the protective shell 100 to make it lighter.

[0042] See also Figure 4 , Figure 4 A detailed view of the accommodating space 130 is shown. In one embodiment, the bottom shell 110 is provided with a plurality of second pin seats 150, and the plurality of second pin seats 150 and the plurality of second through holes are arranged in one-to-one correspondence, and the second pin seats 150 extend from the bottom shell 110 toward the other side of the partition 120 along its thickness direction; the second pin seat 150 is provided with a third through hole of the same size, and the third through hole is coaxially connected with the second through hole.

[0043] The second pin base 150 has the same function as the first pin base 140, that is, the length of the first through hole is increased in disguise, so that the first through hole, the second through hole, and the third through hole are connected together, so that the pin 210 of the power tube 200 can be protected to the maximum extent, and the second pin base 150 is also conducive to reducing the thickness of the bottom shell 110. The second pin base 150 actually protrudes from the inner wall of the bottom shell 110 into the accommodating space 130. This design is related to the structure of the power tube 200, see Figure 2 ,from Figure 2 It can be seen that the power tube 200 extends from the middle area of ​​the side of the insulating part 220, that is, when the power tube 200 is attached to the bottom shell 110, there is a little distance between the bending point of the power tube 200 and the pin 210 in the middle of the sterilization part and the bottom shell 110. The second pin seat 150 can make up for the space created by this distance, thereby playing a certain supporting role for the pin 210 and a limiting role for the insulating part 220.

[0044] Preferably, in one embodiment, the second pin holder 150 is coated with adhesive on a side facing away from the bottom shell 110 for bonding with the PCB. This can make the connection between the protective shell 100 and the PCB more secure and make the device more stable. In addition, a rubber pad can be arranged around the first pin holder to increase the protection level.

[0045] See also Figure 4 In one embodiment, the partition 120 includes a partition plate 121 and a limit plate 122, and the distance between two adjacent partition plates 121 is configured to be greater than the distance between two opposite end surfaces of the insulating portion 220 of the power tube 200; the limit plate 122 extends into the accommodating space 130 along the partition plate 121, and the limit plate 122 is configured to be close to the end surface of the insulating portion 220 of the power tube 200.

[0046] from Figure 4 It can be seen that, in order to facilitate the clamping of the power tube 200, the original accommodation space 130 enclosed by the partition plate 121 is much larger than the insulating part 220, so that the insulating part 220 may be put in and shake, thereby causing tension between the pin 210 and the insulating part 220, resulting in an unstable connection between the two. The limiting plate 122 can effectively solve this problem, not only facilitating the clamping of the power tube 200, but also as close as possible to the two ends of the power tube 200, so that the insulating part 220 of the power tube 200 is more stable in the accommodation space 130.

[0047] participate Figure 3 In one embodiment, the edge of the bottom shell 110 away from the partition 120 is chamfered to increase the air pressure and facilitate heat dissipation.

[0048] See also Figure 1 The present application also provides a heat dissipation protection structure, including the protective shell 100 in any one of the above embodiments, and also including a heat sink (not shown in the figure), a ceramic substrate 300, a power tube 200 and a PCB board (not shown in the figure), the insulating portion 220 of the power tube 200 is located in the accommodating space 130 of the protective shell 100, and the pin 210 of the power tube 200 passes through the first through hole of the protective shell 100 and extends from the other side to be electrically connected to the PCB board. The heat sink is located on the other side of the power tube 200 away from the PCB board, one side of the ceramic substrate 300 is attached to the end of the insulating portion 220 away from the PCB, and the other side of the ceramic substrate 300 is attached to the end of the heat sink facing the insulating portion 220.

[0049] Specific, combined Figure 1 The arrangement order is described, with the normal direction of the bottom shell 110 as the arrangement direction, the outermost side is the PCB board, the PCB board is fixedly connected to the bottom shell 110, and the side of the bottom shell 110 away from the PCB board is the accommodating space 130, which is used to place the power tube 200, wherein the tube seat of the power tube 200 is connected to the PCB board through the first through hole on the bottom shell 110, and the insulating part 220 of the power tube 200 is bonded to the ceramic substrate 300 on the side away from the PCB board. The ceramic substrate 300 has good thermal conductivity and can effectively transfer heat to the power tube 200, and the other side bonded to the ceramic substrate 300 is a heat sink.

[0050] Preferably, see Figure 1 In one embodiment, the outermost partition 120 of the protective shell 100 is attached to the radiator, and a vent hole 123 is provided on the outermost partition 120 .

[0051] In this embodiment, the outermost partition 120 is flush with the ceramic substrate 300, so when the ceramic substrate 300 is attached to the radiator, the outermost partition 120 is also attached to the radiator at the same time. Compared with the existing sealing structure that isolates the radiator together, the present application only separates the power tube 200. In fact, the radiator does not need to be isolated together, because this will prevent heat from being transferred out. The outermost partition 120 of the present application can achieve a dustproof effect, and the air vent 123 can firstly be used to circulate the hot air in the accommodation space 130 outward, and secondly, it can facilitate the welding of the plug-in in the accommodation space 130.

[0052] from Figure 1 It can also be seen that the internal partition plate 121 also has ventilation holes 123. If the partition plate 121 is not attached to the radiator, the ventilation holes 123 do not need to be provided.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective shell for protecting a power tube (200), wherein the power tube (200) comprises a tube pin (210) and an insulating portion (220), wherein the tube pin (210) is bent, one end of the tube pin (210) is connected to the insulating portion (220), and the other end is connected to a PCB board, wherein: include: A base, having a plurality of first through holes provided along its thickness direction, wherein the first through holes are used for allowing the pins of the power tube (200) to pass through; The base is provided with a plurality of accommodating spaces (130) on one side along the thickness direction thereof, and a corresponding at least one first through hole is provided on the side of each accommodating space (130).

2. The protective shell according to claim 1, characterized in that: The base comprises a bottom shell (110) and a plurality of partitions (120), wherein the partitions (120) extend from one side of the bottom shell (110) along the thickness direction thereof, and the plurality of partitions (120) are arranged at intervals along the plane direction of the bottom shell (110), and the bottom shell (110) and the plurality of partitions (120) are arranged to form a plurality of accommodating spaces (130).

3. The protective shell according to claim 1, characterized in that: The base is provided with a plurality of first pin seats (140), the plurality of first pin seats (140) and the plurality of first through holes are arranged in one-to-one correspondence, and the first pin seats (140) extend from the other side of the base away from the accommodating space (130) along the thickness direction thereof; The first pin seat (140) is provided with a second through hole of the same size, and the second through hole is coaxially connected with the first through hole.

4. The protective shell according to claim 1, characterized in that: The hollow design of the base forms a plurality of hollow surfaces (160), the plurality of hollow surfaces (160) are arranged corresponding to the plurality of accommodating spaces (130), and the area of ​​the hollow surfaces (160) is configured to be smaller than the area of ​​the insulating portion (220) of the power tube (200).

5. The protective shell according to claim 2, characterized in that: The bottom shell (110) is provided with a plurality of second pin seats (150), the plurality of second pin seats (150) and the plurality of second through holes are arranged in a one-to-one correspondence, and the second pin seats (150) extend from the bottom shell (110) toward the other side of the partition (120) along the thickness direction thereof; The second pin seat (150) is provided with a third through hole of the same size, and the third through hole is coaxially connected with the second through hole.

6. The protective shell according to claim 5, characterized in that: The side of the second pin seat (150) facing away from the bottom shell (110) is coated with adhesive for bonding to a PCB board.

7. The protective shell according to claim 2, characterized in that: The partition (120) comprises a partition plate (121) and a limit plate (122), and the distance between two adjacent partition plates (121) is configured to be greater than the distance between two opposite end surfaces of the insulating portion (220) of the power tube (200); The limiting plate (122) extends into the accommodating space (130) along the partition plate (121), and the limiting plate (122) is configured to be close to the end surface of the insulating portion (220) of the power tube (200).

8. The protective shell according to claim 1, characterized in that: The edge of the base facing away from the accommodating space (130) is provided with a chamfer.

9. A heat dissipation protection structure, comprising the protective shell according to any one of claims 1 to 8, characterized in that: It also comprises a heat sink, a ceramic substrate (300), a power tube (200) and a PCB board, wherein the insulating portion (220) of the power tube (200) is located in the accommodating space (130) of the protective shell, and the pin of the power tube (200) passes through the first through hole of the protective shell and extends from the other side to be electrically connected to the PCB board; The heat sink is located on the other side of the power tube (200) away from the PCB board, one side of the ceramic substrate (300) is attached to an end of the insulating part (220) away from the PCB, and the other side of the ceramic substrate (300) is attached to an end of the heat sink facing the insulating part (220).

10. The heat dissipation protection structure according to claim 9, characterized in that: The outermost partition plate (120) of the protective shell is in contact with the radiator, and a ventilation hole (123) is provided on the outermost partition plate (120).

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