Protective shell and plug-in circuit board

Abstract

The application discloses a protective shell and a plug-in circuit board, and relates to the technical field of plug-in circuit boards.The protective shell comprises a first shell and a second shell, wherein the first shell and the second shell are connected by splicing, one side of the first shell is provided with a first plate member extending towards the second shell, and the second shell is connected with the first plate member by abutting on one side of the first plate member, so that the first shell and the second shell are connected as a whole, and a mounting cavity for accommodating a circuit board body is formed between the first shell and the second shell, so that the circuit board body of the plug-in circuit board is completely wrapped by the first shell and the second shell, the circuit board body is fully protected in the mounting cavity, the risk of collision between the circuit board body and the structure in the cabinet during the plug-in process is reduced, the components and the terminals on the circuit board body are effectively protected, and deformation and falling off are prevented.

Description

Technical Field

[0001] This application relates to the field of pluggable circuit board technology, and in particular to a protective shell and a pluggable circuit board. Background Technology

[0002] Plug-in circuit boards (PCBs) are a common method of assembling electronic devices, widely used in computers, servers, and communication equipment. A PCB is a circuit board that can be inserted into an expansion slot in a host system to expand its functionality. Currently, during use, the PCB is exposed, and during insertion and removal, components and terminals on the board are prone to collisions with the chassis structure, leading to deformation or detachment of components. While protective shells exist for PCBs, these are often simply installed on one side of the board, and are mostly thin plates directly mounted on the board. This not only occupies board space but also makes the thin plates susceptible to deformation after installation, resulting in poor actual protection. Utility Model Content

[0003] The main purpose of this application is to propose a protective shell and a pluggable circuit board, which aims to improve the problem that the current protection effect of pluggable circuit boards is poor, resulting in the pluggable circuit boards being easily damaged during the plugging and unplugging process.

[0004] To achieve the above objectives, in a first aspect, this application proposes a protective housing for a pluggable circuit board, the pluggable circuit board including a circuit board body and terminals, the protective housing having a first direction extending along its height, a second direction extending along its length, and a third direction extending along its width, the protective housing comprising: First shell; and The second housing, along the first direction, is disposed on one side of the first housing, and the first housing covers the second housing to form a mounting cavity for accommodating the circuit board body between the first housing and the second housing; The first housing has a first plate extending towards the second housing at one end along the second direction, and the first plate abuts against and is fixedly connected to the second housing. In one embodiment, the protective shell further includes a second plate, which is disposed at the end of the first shell away from the first plate in the second direction; The ends of the first housing and the second housing facing the second plate are both abutted against and fixedly connected to the second plate; One of the first plate and the second plate has a through hole extending along the second direction for at least a portion of the terminal block to extend outward from the mounting cavity.

[0005] In one embodiment, the first housing includes: Substrate, the first plate is connected to one end of the substrate along the second direction; and Two third plates are respectively connected to opposite sides of the substrate along the third direction, and the two third plates extend toward the second housing; The second housing has a slot corresponding to the third plate on the side facing the first housing. In the first direction, the third plate is at least partially inserted into the corresponding slot.

[0006] In one embodiment, in the third direction, the width dimension of the slot is denoted as S1, and the thickness dimension of the third plate is denoted as S2, where S1 is greater than S2; So that when at least a portion of the third plate is inserted into the slot along the first direction, the third plate can be driven to move relative to the slot in the third direction.

[0007] In one embodiment, the protective shell further includes an elastic pressing portion extending along the second direction, the elastic pressing portion including a first elastic element; The first elastic member is housed within the slot, and in the third direction, one side of the first elastic member abuts against the side wall of the third plate, and the other side abuts against the side wall of the slot.

[0008] In one embodiment, the elastic pressing portion further includes: A second elastic member, accommodated within the slot, is disposed on the side of the third plate opposite to the first elastic member in the third direction; in the third direction, the side of the second elastic member facing the third plate abuts against the third plate and / or the side of the second elastic member opposite to the third plate abuts against the slot side arm; and In the third direction, the connector is respectively connected to the first elastic member and the second elastic member at its opposite ends; in the first direction, the connector is sandwiched between the third plate and the bottom wall of the slot.

[0009] In one embodiment, in the third direction, both of the third plates are provided with ventilation holes so that the space between the two third plates forms a heat dissipation channel.

[0010] In one embodiment, in the third direction, mounting grooves communicating with the mounting cavity are respectively provided on opposite sides inside the second housing. The mounting grooves extend along the second direction and penetrate at least one end of the second housing in the second direction.

[0011] In one embodiment, the first housing and the second housing are aluminum alloy structural components.

[0012] Secondly, this application proposes a pluggable circuit board, including the protective shell described in the above embodiments.

[0013] The protective shell and plug-in circuit board proposed in this application include a first shell and a second shell, wherein the first shell and the second shell are spliced ​​together. One side of the first shell has a first plate extending toward the second shell, and the side of the second shell facing the first plate is abutting and connected to the first plate. This makes the first shell and the second shell connected as a whole, and a mounting cavity for accommodating the circuit board body is formed between the first shell and the second shell. This ensures that the circuit board body is completely wrapped by the first shell and the second shell when plugging and unplugging the circuit board, thereby ensuring that the circuit board body is fully protected in the mounting cavity, reducing the risk of collision between the circuit board body and the chassis structure during plugging and unplugging, effectively protecting the components and terminals on the circuit board body, and preventing deformation and detachment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the protective shell provided in some embodiments of this application; Figure 2 for Figure 1 Another perspective view of the overall structure of the protective shell shown; Figure 3 This is a schematic diagram of the first and second shells in their separated states according to this application; Figure 4 This is a schematic diagram showing the first housing, the second housing, and the second plate in the separated state of this application; Figure 5 for Figure 4 Schematic diagram of the AA section structure; Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point B; Figure 7 This is a schematic diagram showing the installation relationship between the elastic pressing part, the third plate, and the slot in this application; Figure 8 This is a schematic diagram of the first shell structure of this application; Figure 9 This is a schematic diagram showing the separation of the first housing, the second housing, and the second plate in this application; Figure 10 This is a schematic diagram showing the terminals and circuit board body of this application in a separated state; Figure 11 This is a schematic diagram showing the fixed connection status of the wiring terminals and the main body of the circuit board in this application.

[0016] Explanation of icon numbers: 100. Protective case; 1. First housing; 11. First plate; 111. Perforation; 112. Hole; 12. Base plate; 13. Third plate; 131. Ventilation hole; 14. Fourth plate; 2. Second housing; 21. Slot; 22. Mounting slot; 23. Rib; 24. Assembly slot; 3. Installation cavity; 4. Second panel; 5. Elastic pressing part; 51. First elastic element; 52. Second elastic element; 53. Connecting element; 6. Inserting / removing circuit board; 61. Circuit board body; 62. Wiring terminals; 7. Positioning block; 71. Protruding part; 8. First fastener; 9. Second fastener.

[0017] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0021] Inserting pluggable circuit boards into a chassis is a common method of assembling electronic devices, widely used in computers, servers, communication equipment, and other fields. A pluggable circuit board is a circuit board that can be inserted into the expansion slot of a host system to expand the host's functionality. Currently, during use, the circuit board is exposed, and during insertion and removal, the components and terminals on the circuit board are prone to collision with the chassis structure, causing deformation or detachment of related components. Although there are protective shells for pluggable circuit boards, they are simply installed on one side of the circuit board, and most of these shells are thin plates directly mounted on the circuit board. This not only occupies the layout area of ​​the circuit board, but the thin plates are also prone to deformation after installation, resulting in poor actual protection.

[0022] Based on this, refer to Figure 1 , Figure 2 As shown, this application embodiment provides a protective shell 100 applied to a pluggable circuit board 6, wherein the pluggable circuit board 6 has a circuit board body 61 and a terminal block 62, the terminal block 62 and the circuit board body 61 being electrically connected; the protective shell 100 has a first direction Z extending along its height, a second direction X extending along its length, and a third direction Y extending along its width, the first direction Z being perpendicular to the surface of the circuit board body 61, the second direction X being parallel to the length direction of the circuit board body 61, and the third direction Y being parallel to the width direction of the circuit board body 61.

[0023] In this embodiment, the protective shell 100 includes a first shell 1 and a second shell 2. The second shell 2 is disposed on one side of the first shell 1 along a first direction (Z direction), and the first shell 1 covers the second shell 2 to form a mounting cavity 3 between the first shell 1 and the second shell 2. The circuit board body 61 of the plug-in circuit board 6 is housed in the mounting cavity 3, and the circuit board body 61 is completely wrapped by the first shell 1 and the second shell 2. This ensures that the circuit board body 61 is fully protected in the mounting cavity 3, reduces the risk of collision between the circuit board body 61 and the chassis structure during plugging and unplugging, effectively protects the components and terminals on the circuit board, and prevents deformation and detachment.

[0024] In this embodiment, as Figure 2 As shown, the first housing 1 has a first plate 11 extending toward the second housing 2 on one side along the second direction X, and at least a portion of the second housing 2 facing the first plate 11 abuts against and is fixedly connected to the first plate 11, thereby making the first housing 1 and the second housing 2 form a stable whole to ensure the stability of the overall structure of the protective housing 100 and to ensure that the protective housing 100 will not loosen during daily plugging and unplugging. At the same time, the circuit board body 61 of the plugging and unplugging circuit board 6 is housed in the mounting cavity 3, and the circuit board body 61 is completely wrapped by the first housing 1 and the second housing 2, thereby ensuring that the circuit board body 61 is fully protected in the mounting cavity 3 and reducing the risk of the circuit board body 61 colliding with the chassis structure during plugging and unplugging.

[0025] For example, such as Figure 3 As shown, the first plate 11 can extend along the Z direction, that is, along a direction perpendicular to the first housing 1 and the second housing 2; the first plate 11 can extend toward the second housing 2 a certain distance, so that the second housing 2 at least partially abuts against the first plate 11 on the side facing the first plate 11 in the second direction X, or the first plate 11 can extend directly to the side of the second housing 2 away from the first housing 1, so that the second housing 2 is completely abutted against the first plate 11 on the side facing the first plate 11 in the second direction X.

[0026] In this embodiment, the side of the second housing 2 facing the first plate 11 and the first plate 11 can be connected and fixed by a first fastener 8. The first fastener 8 can be a screw, bolt, etc. A hole is provided through the first plate 11 along the second direction X, and an internal threaded hole is provided on the side of the second housing 2 facing the first plate 11. When the first plate 11 and the second housing 2 are fastened together, the first fastener 8 passes through the hole on the first plate 11 and is assembled with the internal threaded hole on the second housing 2, thereby realizing the fixed connection between the second housing 2 and the first plate 11, and thus connecting and fixing the first housing 1 and the second housing 2 into a whole, ensuring the stability of the overall structure of the protective shell 100; or, the first plate 11 and the second housing 2 can be connected by welding. However, in order to facilitate the disassembly and plugging of the circuit board 6 for inspection and maintenance in the future, the first fastener 8 is preferred in this application for fastening and fixing the first housing 1 and the second housing 2.

[0027] It is understood that in this application, the side of the first housing 1 and the second housing 2 away from the first board 11 can be open, that is, along the second direction X, so that the protective housing 100 is in an open state on the side away from the first board 11. Although the protective housing 100 is in an open state on this side, the circuit board body 61 is still wrapped by the first housing 1 and the second housing 2, which can ensure effective protection of the circuit board body 61 during daily plugging and unplugging, and avoid collisions between the circuit board body 61 and the structural components inside the chassis. Making the side of the protective housing 100 away from the first board 11 open also effectively reduces the consumption of materials and lowers the material cost, while also helping to achieve a lightweight design of the protective housing 100.

[0028] For example, in this application, the side of the first housing 1 and the second housing 2 away from the first plate 11 can be closed, that is, along the second direction X, so that the protective shell 100 is closed on the side away from the first plate 11. This makes the circuit board body 61 completely physically isolated from the external environment. While effectively preventing the circuit board body 61 from bumping into other structural components in the chassis, it also provides the circuit board body 61 with a relatively isolated environment from the outside world. This helps to prevent dust, liquid or other contaminants in the external environment from entering the mounting cavity 3, which is beneficial to improving the reliability of the circuit board body 61 in harsh environments.

[0029] In this embodiment, the wiring terminal 62, which is electrically connected to the circuit board body 61, should be at least partially located in the mounting cavity 3. This ensures that the wiring terminal 62 can be plugged into the terminal block inside the chassis, while also protecting the wiring terminal 62 during plugging and unplugging, thus reducing the probability of the wiring terminal 62 colliding with other components inside the chassis.

[0030] In this embodiment, as Figure 4 , Figure 5 As shown, the second shell 2 is provided with ribs 23 extending along the second direction X to enhance the structural strength of the second shell 2. The ribs 23 can be set in different shapes, such as strips, triangles or rectangles, etc. The specific shape and number of ribs depend on the strength requirements and space constraints.

[0031] Reference Figure 1 , Figure 2 , Figure 4 As shown, in one embodiment of this application, the protective shell 100 further includes a second plate 4. In the second direction X, the second plate 4 is disposed on the side of the first shell 1 away from the first plate 11. The sides of the first shell 1 and the second shell 2 facing the second plate 4 are both abutted and connected to the second plate 4. Thus, the connection between the second plate 4 and the first shell 1 and the second shell 2 is fixed, thereby further enhancing the connection strength and stability between the first shell 1 and the second shell 2, and further increasing the overall structural strength of the protective shell 100 to prevent deformation during daily insertion and removal.

[0032] In this embodiment, the second plate 4 and the first housing 1 and the second housing 2 can be connected by a second fastener 9. The second fastener 9 can be a screw, bolt, etc. Figure 4 As shown, multiple holes are provided through the second plate 4 along the second direction X, and internal threaded holes corresponding to the multiple holes are provided on the side of the first housing 1 and the second housing 2 facing the second plate 4. After the second fastener 9 passes through the holes provided on the second plate 4, it is assembled into the corresponding internal threaded holes, thereby connecting and fixing the second plate 4 with the first housing 1 and the second housing 2. This makes the first housing 1 and the second housing 2 fixedly connected on both sides along the second direction X, thereby improving the connection stability between the first housing 1 and the second housing 2 and ensuring the strength of the overall structure of the protective shell 100.

[0033] In this embodiment, as Figure 1 , Figure 2As shown, a first plate 11 is provided on one side of the first housing 1 and the second housing 2 along the X direction, and a second plate 4 is provided on the other side along the second direction X. This further seals the mounting cavity 3 used to accommodate the circuit board body 61, thereby completely isolating the circuit board body 61 from the external environment. This further improves the protection of the circuit board body 61 during insertion and removal. It also helps to isolate dust, liquids or other contaminants from the external environment, preventing them from entering the mounting cavity 3 and improving the reliability of the circuit board body 61 in harsh environments.

[0034] It should be noted that a through hole 111 needs to be provided along the second direction X on one of the first plate 11 and the second plate 4. The through hole 111 is provided so that at least part of the terminal 62 electrically connected to the circuit board body 61 extends outward from the mounting cavity 3 through the through hole 111, for plugging and unplugging connection with the terminal block in the chassis. In this embodiment, the above-mentioned through hole 111 is provided on the first plate 11 so that at least part of the terminal 62 extends outward from the through hole 111 (e.g., Figure 2 (As shown).

[0035] Understandably, in order to reduce material costs and achieve a lightweight design for the protective shell 100, the sides of the first shell 1 and the second shell 2 away from the first plate 11 can be set to an open state. This is then combined with the second plate 4, so that the sides of the first shell 1 and the second shell 2 facing the second plate 4 abut against and are fixedly connected to the second plate 4. This improves the connection strength between the first shell 1 and the second shell 2, and also physically isolates the environment inside the mounting cavity 3 from the external environment.

[0036] It is understood that the first housing 1, the second housing 2, the first plate 11, and the second plate 4 in this application can be structural components with electromagnetic shielding effects, such as aluminum alloy, stainless steel, copper alloy, etc., to provide a better electromagnetic shielding space for the circuit board body 61. The electromagnetic shielding space can effectively block the interference of external electromagnetic fields on the circuit board body 61 and ensure that the circuit board works stably in a complex electromagnetic environment. At the same time, the shielding space can also prevent the electromagnetic signals generated by the circuit board body 61 from leaking to the outside and reduce interference to other devices.

[0037] In this embodiment, by selecting appropriate materials for the first housing 1, the second housing 2, the first plate 11, and the second plate 4 and making them have electromagnetic shielding effects, a better physical isolation environment is provided for the circuit board body 61, while also providing a better electromagnetic shielding space for the circuit board body 61. This not only improves the physical protection and electromagnetic shielding effect of the circuit board body 61, but also ensures the stability and reliability of the equipment under various working conditions, meets electromagnetic compatibility standards, and enhances the user experience.

[0038] Reference Figure 3 , Figure 8 As shown, in one embodiment of this application, the first housing 1 includes a substrate 12 and a third plate 13; wherein the first plate 11 is connected to one side of the substrate 12 along the second direction X, and two third plates 13 are provided, the two third plates 13 are respectively connected to opposite sides of the substrate 12 along the third direction Y, and the two third plates 13 extend toward the second housing 2; as shown Figure 3 As shown, a slot 21 corresponding to the third plate 13 is provided on the side of the second housing 2 facing the first housing 1. In the Z direction, at least a portion of the third plate 13 near the end of the second housing 2 is inserted into the corresponding slot 21 (e.g., Figure 5 As shown), when the first housing 1 covers the second housing 2, at least a portion of the third plate 13 can be inserted into the corresponding slot 21, thereby further improving the sealing of the mounting cavity 3.

[0039] In this embodiment, the third plate 13 is inserted into the corresponding slot 21, so that the third plate 13 and the slot 21 form a labyrinth sealing structure. That is, through multiple sealing paths, dust, liquid or other pollutants in the external environment can be effectively prevented from entering the mounting cavity 3. Compared with the way that the third plate 13 directly contacts the second housing 2 on the side facing the second housing 2, the labyrinth sealing structure significantly improves the sealing performance and reduces the probability of pollutants entering the mounting cavity 3.

[0040] In this embodiment, when the first housing 1, the second housing 2, the first plate 11, and the second plate 4 are made of materials with electromagnetic shielding effect, a better electromagnetic shielding effect can be achieved. Because the labyrinth sealing structure increases the propagation path length of electromagnetic waves through multiple sealing paths, the electromagnetic waves are reflected and attenuated multiple times during propagation, thereby effectively reducing electromagnetic wave leakage. Compared with the method of direct contact between the third plate 13 and the second housing 2, the labyrinth sealing structure significantly improves the electromagnetic shielding effect and reduces electromagnetic interference.

[0041] In this embodiment, the substrate 12, the first plate 11, and the two third plates 13 are all integrally formed. For example, the first shell 1 can be prepared by integral stamping, thereby reducing the number of parts of the protective shell 100, thus reducing the assembly steps of the protective shell 100 and improving production efficiency.

[0042] In this embodiment, as Figure 8 As shown, a fourth plate 14 can be provided on the side of the substrate 12 facing the second plate 4. There can be one or more fourth plates 14, and multiple fourth plates 14 are spaced apart along the third direction Y. By providing an internal threaded hole on the fourth plate 14, the second fastener 9 can pass through the second plate 4 and then be threaded into the internal threaded hole on the fourth plate 14, thereby realizing the connection between the first housing 1 and the second plate 4.

[0043] Reference Figure 5 , Figure 6 As shown, in one embodiment of this application, in the third direction Y, the width dimension of the slot 21 is denoted as S1, and the thickness dimension of the third plate 13 is denoted as S2, where S1 is greater than S2. This allows the third plate 13 to be slightly moved relative to the slot 21 in the third direction Y when at least a portion of the third plate 13 is inserted into the slot 21 in the first direction Z. This enables the third plate 13 to be finely adjusted in position within the corresponding slot 21 in the third direction Y during the assembly of the protective shell 100, thereby improving the convenience of assembling and fitting the protective shell 100.

[0044] It is understood that the first housing 1, the second housing 2, and the second plate 4 are fixedly connected by fasteners (such as bolts, screws, etc.). Therefore, holes (for fasteners to pass through) and internal threaded holes (for screwing with fasteners) need to be opened at corresponding positions on the first housing 1, the second housing 2, and the second plate 4 to allow the fasteners to be inserted to achieve the connection and fixation effect.

[0045] In this application, by providing a slot 21 that mates with the third plate 13, the sealing performance of the protective shell 100 is further improved, thereby enhancing the physical and electromagnetic shielding protection of the circuit board body 61. However, the slot 21 also limits the convenience of subsequent assembly of the first shell 1 and the second shell 2. Due to the limitation of the slot 21, the third plate 13 cannot be finely adjusted in position relative to the second shell 2 along the third direction Y. Furthermore, during the manufacturing process of the first plate 11, the first shell 1, and the second shell 2, the holes (for fasteners to pass through) and the internal threaded holes (for screwing with fasteners) provided on their bodies are subject to... Due to the influence of processing errors, when assembling the above-mentioned components, fasteners may not be able to be inserted because the positions of the holes and internal threaded holes cannot be perfectly matched, resulting in the unusability or scrapping of related parts and increasing costs. At the same time, when assembling the first housing 1 and the second housing 2, in order for the two third plates 13 to be inserted into their corresponding slots 21, it is necessary to ensure that the positions of the two slots 21 on the second housing 2 and the positions of the two third plates 13 on the first housing 1 are precisely aligned. Otherwise, the third plates 13 may not be able to be inserted into their corresponding slots 21, which is not conducive to the assembly of the protective shell 100.

[0046] In this embodiment, the dimension of the slot 21 along the third direction Y is set to be larger than the dimension of the third plate 13 along the third direction Y, so that the third plate 13 can be moved and adjusted (fine-tuned) along the third direction Y within the corresponding slot 21. This enables the first housing 1 to be finely adjusted relative to the second housing 2 by adjusting the position of the first housing 1 relative to the second housing 2 along the third direction Y when the third plate 13 is inserted into the corresponding slot 21 during assembly of the first housing 1, the corresponding holes and internal thread holes to be aligned. This allows the fasteners to be inserted smoothly and fixedly connected, avoiding the situation where manufacturing errors affect subsequent assembly, and improving the convenience and efficiency of assembly. At the same time, setting the dimension of the slot 21 along the third direction Y to be larger than the dimension of the third plate 13 along the third direction Y means that the positions of the two slots 21 and the two third plates 13 no longer need to be precisely matched during manufacturing. This avoids the situation where the third plate 13 cannot be inserted into the corresponding slot 21 due to manufacturing errors, and reduces the requirements for processing accuracy.

[0047] Reference Figure 7As shown, in one embodiment of this application, the protective shell 100 further includes an elastic pressing portion 5, which extends along the second direction X, that is, it extends along the extension direction of the slot 21. The elastic pressing portion 5 includes a first elastic member 51, which is housed in the slot 21. In the third direction Y, the first elastic member 51 is disposed on the side of the third plate 13 away from the mounting cavity 3. In the third direction Y, one side of the first elastic member 51 abuts against the side wall of the slot 21 away from the mounting cavity 3, and the other side of the first elastic member 51 abuts against the side wall of the third plate 13 away from the mounting cavity 3. Thus, by having the first elastic member 51 abut against the side walls of the third plate 13 and the slot 21 away from the mounting cavity 3 on both sides along the third direction Y, the sealing effect between the third plate 13 and the slot 21 can be further improved.

[0048] In this embodiment, as Figure 6 As shown, when the third plate 13 is inserted into its corresponding slot 21, since the dimension of the slot 21 along the third direction Y is larger than the dimension of the third plate 13 along the third direction Y, there is a certain gap between the third plate 13 and the slot 21 in the third direction Y. Simultaneously, after the first housing 1, the second housing 2, and the second plate 4 are connected and fixed by fasteners, the stress of the fasteners may cause a slight adjustment in the relative positions of the first housing 1, the second housing 2, and the second plate 4, thus affecting the Z-direction relationship between the third plate 13 and the slot 21. The close contact between the three plates is not achieved when the third plate 13 is placed into the corresponding slot 21. The third plate 13 abuts against the bottom wall of the slot 21 along the Z direction. However, as the fasteners are tightened, and under the stress of the fasteners, the relative position between the third plate 13 and the slot 21 may be slightly adjusted, causing the third plate 13 and the slot 21 to no longer be in close contact. Therefore, in the Z direction, a gap is generated between the third plate 13 and the bottom wall of the slot 21. The appearance of the gap reduces the sealing performance of the protective shell 100 and affects its physical and electromagnetic shielding protection effect.

[0049] In this embodiment, as Figure 7As shown, by providing a first elastic member 51 in the slot 21 located on the side of the third plate 13 and the slot 21 away from the mounting cavity 3, and by making the first elastic member 51, under its own elasticity, one side of the first elastic member 51 abuts against the side wall of the third plate 13, and the other side of the first elastic member 51 abuts against the side wall of the slot 21 away from the mounting cavity 3; thereby, through the elastic abutment of the first elastic member 51, the gap between the third plate 13 and the side wall of the slot 21 away from the mounting cavity 3 is completely sealed. Even if a gap is generated between the first plate 11 and the bottom wall of the slot 21 in the Z direction during the tightening of the fastener, dust, liquid or other pollutants and electromagnetic signals from the external environment will not be allowed to enter the mounting cavity 3, thereby further improving the physical and electromagnetic protection effect of the protection.

[0050] It is understood that the first elastic element 51 can also be disposed in the slot 21 between the third plate 13 and the slot 21 on the side near the mounting cavity 3, such that the first elastic element 51 abuts against the side wall of the third plate 13 on the Y-direction and the other side of the first elastic element 51 abuts against the side wall of the slot 21 on the side near the mounting cavity 3, thereby achieving the above-mentioned sealing effect; or the first elastic element 51 can be disposed in the slot 21 on the side of the third plate 13 away from the mounting cavity 3, and the first elastic element 51 can also be disposed in the area between the third plate 13 and the slot 21 on the side near the mounting cavity 3, thereby further improving the electromagnetic protection effect of the protective shell 100.

[0051] In this embodiment, by providing a first elastic element 51 between the third plate 13 and the slot 21, it is suitable for some application scenarios with high requirements for physical and electromagnetic protection effects. In some application scenarios with low requirements for physical and electromagnetic protection effects, it is not necessary to provide the above-mentioned first elastic element 51.

[0052] In this embodiment, the first elastic element 51 can be a spring sheet, which has good elasticity and mechanical strength, and the spring sheet can be configured in various shapes; it is understood that the first elastic element 51 in this application can be formed by repeatedly bending the spring sheet (e.g., Figure 7 (As shown).

[0053] Reference Figure 7 As shown, in one embodiment of this application, the elastic pressing part 5 further includes a second elastic member 52, which is housed in the slot 21. In a third direction, the second elastic member 52 is disposed on the side of the third plate 13 away from the first elastic member 51. In a third direction, the second elastic member 52 is in contact with the sidewall of the third plate 13 facing the third plate 13.

[0054] It is understandable that when the first elastic member 51 is located between the third plate 13 and the slot 21 on the side wall away from the mounting cavity 3, the second elastic member 52 is located between the third plate 13 and the slot 21 on the side wall near the mounting cavity 3, and the second elastic member 52 abuts against the side wall of the third plate 13; when the first elastic member 51 is located between the third plate 13 and the slot 21 on the side wall near the mounting cavity 3, the second elastic member 52 is located between the third plate 13 and the slot 21 on the side wall away from the mounting cavity 3, and the second elastic member 52 abuts against the side wall of the third plate 13.

[0055] In this embodiment, as Figure 7 As shown, the elastic pressing part 5 also includes a connector 53. In the third direction, the two opposite ends of the connector 53 are respectively connected to the first elastic element 51 and the second elastic element 52. In the first direction, the connector 53 is sandwiched between the third plate 13 and the bottom wall of the slot 21, thereby connecting the first elastic element 51 and the second elastic element 52 through the connector 53. The first elastic element 51 and the second elastic element 52 are respectively located on opposite sides of the third plate 13 along the third direction Y. In the Z direction, the connector 53 is sandwiched between the third plate 13 and the bottom wall of the slot 21, thereby further improving the sealing and protection effect of the protective shell 100. At the same time, by connecting the first elastic element 51 and the second elastic element 52 together through the connector 53, it is also possible to prevent the first elastic element 51 and the second elastic element 52 from coming out of the slot 21, ensuring the installation stability during subsequent use.

[0056] In this embodiment, both the second elastic element 52 and the connecting element 53 can be spring sheets.

[0057] For example, the structure of the second elastic member 52 can be a spring sheet structure that is set in a straight position, or it can be formed by repeatedly bending a spring sheet (that is, the same as the structure of the first elastic member 51). When the second elastic member 52 is a spring sheet structure that is set in a straight position, the second elastic member 52 can abut against the side wall of the third plate 13, or the second elastic member 52 can abut against the side wall of the slot 21. When the second elastic member 52 is formed by repeatedly bending a spring sheet, the second elastic member 52 abuts against the side wall of the third plate 13 on the side along the third direction Y, and abuts against the side wall of the slot 21 on the other side along the third direction Y.

[0058] In this embodiment, the structures of the first elastic member 51 and the second elastic member 52 can be set to any form as needed, as long as an effective electrical connection can be achieved between the third plate 13 and the slot 21. Thus, electromagnetic... Protective effect.

[0059] Reference Figure 2 , Figure 3 As shown, in one embodiment of this application, in the third direction Y, both third plates 13 are provided with multiple ventilation holes 131. The multiple ventilation holes 131 are arranged sequentially on the third plates 13 so that the space between the third plates 13 forms a heat dissipation channel, thereby allowing outside cold air to flow in the mounting cavity 3; that is, through the ventilation holes 131, outside cold air enters the mounting cavity 3, forms convection with the hot air in the mounting cavity 3, and carries away the heat in the mounting cavity 3, thereby achieving natural heat dissipation.

[0060] In this embodiment, natural heat dissipation is adopted, that is, heat dissipation air ducts are formed through ventilation holes 131, and heat dissipation is achieved by natural convection, without the need for additional heat dissipation equipment (such as fans or heat sinks); and the temperature inside the mounting cavity 3 is effectively reduced, the service life of the circuit board body 61 is extended, and the stability and reliability of the equipment are improved.

[0061] In this embodiment, in order to avoid the overall sealing performance of the protective shell 100 being reduced due to the setting of the ventilation hole 131, a dustproof net or filter can be set in the mounting cavity 3 at the position corresponding to the ventilation hole 131. The dustproof net or filter can effectively prevent dust and other particles from entering the mounting cavity 3, while allowing air circulation to achieve natural convection heat dissipation.

[0062] It is understood that the shape of the ventilation hole 131 in this application can be any shape, such as polygon, circle, etc. In order to ensure the natural convection effect, in the third direction Y, the ventilation holes 131 on the two third plates 13 can be set one-to-one.

[0063] Reference Figure 3 , Figure 4 , Figure 5 , Figure 9 As shown, in one embodiment of this application, in the third direction Y, mounting grooves 22 are respectively provided on opposite sides inside the second housing 2, and the side of the mounting groove 22 facing the mounting cavity 3 is in communication with the mounting cavity 3. The mounting groove 22 extends along the second direction X, and in the second direction X, the mounting groove 22 penetrates at least one side of the second housing 2.

[0064] In this embodiment, mounting grooves 22 are respectively provided on opposite sides inside the second housing 2, such as... Figure 5 As shown, the circuit board body 61 is installed in the corresponding mounting slots 22 at both ends along the third direction Y, thereby enabling rapid positioning and installation of the circuit board body 61.

[0065] In this embodiment, in the second direction X, the mounting groove 22 penetrates at least one side of the second housing 2, so that the circuit board body 61 can slide from one side of the mounting groove 22 into the mounting groove 22 along the second direction X, thereby realizing the mounting of the circuit board body 61 in the mounting groove 22.

[0066] It is understandable that the dimension of the mounting groove 22 along the first direction Z should be slightly larger than the thickness of the circuit board body 61, so as to facilitate the installation of the circuit board body 61 in the mounting groove 22. Then, fasteners are used at appropriate positions in the mounting cavity 3 to position the circuit board body 61 installed in the mounting groove 22, so as to ensure that the circuit board body 61 can be stably installed in the protective shell 100 and avoid loosening.

[0067] In one embodiment of this application, the first housing 1 and the second housing 2 are aluminum alloy structural components, which can achieve a lightweight design of the protective housing 100. At the same time, the aluminum alloy structural components also have high strength and good toughness, and can withstand large mechanical stress, protecting the circuit board body 61 from physical damage.

[0068] In this embodiment, aluminum alloy has good conductivity, which can effectively reflect and absorb electromagnetic waves, achieve good electromagnetic shielding effect, and reduce electromagnetic interference. Good electromagnetic shielding effect helps to improve the signal integrity of the circuit board body 61 and ensure the stable operation of the device in a complex electromagnetic environment.

[0069] Understandably, aluminum alloy has good thermal conductivity, which can quickly conduct heat from the mounting cavity 3 to the outside, achieving effective heat dissipation.

[0070] In one embodiment of this application, such as Figures 1-3 As shown, the second housing 2 has mounting grooves 24 extending in the second direction X on both outer sides along the third direction Y. These grooves allow the plug-in circuit board 6 to slide and be assembled through the mounting grooves 24 and the preset slide rails inside the chassis, thereby achieving the effect of plugging and unplugging the circuit board 6 within the chassis.

[0071] Secondly, this application proposes a pluggable circuit board 6, including the protective shell 100 in the above embodiments.

[0072] In some embodiments, such as Figures 9-11 As shown, the pluggable circuit board 6 includes a circuit board body 61 and terminals 62; wherein, the terminals 62 and one end of the circuit board body 61 along the second direction X are electrically connected, and the terminals 62 are fixed to the circuit board body 61 on both sides along the third direction Y by fasteners (bolts or screws), as shown. Figure 10As shown, both the terminal block 62 and the circuit board body 61 have through holes along the first direction Z, allowing fasteners to pass through them. A positioning block 7 is located below the circuit board body 61 along the first direction Z. The positioning block 7 has an internal threaded hole along the first direction Z that mates with the fastener. After the fastener passes through the terminal block 62 and the circuit board body 61, it is screwed into the internal threaded hole on the positioning block 7, thereby connecting the terminal block 62, the circuit board body 61, and the positioning block 7 into a single unit. In the first direction Z, the positioning block 77 abuts against the second housing 12 on the side facing away from the first housing 11. The positioning block 7 has a protrusion 71 on the side facing away from the second plate 4, and the protrusion 71 faces... The terminal block 62, which is connected as a whole, abuts against the end of the second housing 2 away from the second plate 4, thereby preventing the terminal block 62, the circuit board body 61, and the positioning block 7 from moving in the second direction X toward the second plate 4. When the end of the second housing 12 away from the second plate 4 is connected to the first plate 11, the connection part of the positioning block 7 and the protrusion 71 abuts against the side of the first plate 11 facing the second plate 4, thus preventing the terminal block 62, the circuit board body 61, and the positioning block 7 from moving in the second direction X toward the second plate 4. This fixes the terminal block 62, the circuit board body 61, and the positioning block 7 inside the protective housing 100.

[0073] In this embodiment, as Figure 2 , Figure 3 As shown, the first plate 11 has a hole 112 along the second direction X for accommodating the protrusion 71. It can be understood that the hole 112 can be set through the first plate 11 along the second direction X, or it can be set on the side of the first plate 11 facing the second plate. It depends on the length of the protrusion 71 along the X direction. If the length of the protrusion 71 along the second direction X is less than the thickness of the first plate 11, then it is only necessary to set the hole 112 on the side of the first plate 11 facing the second plate 4. If the length of the protrusion 71 along the second direction X is greater than the thickness of the first plate 11, then it is necessary to set the hole 112 through the first plate 11 along the second direction X so that the protrusion 71 can extend outward through the hole 112.

[0074] It is understood that the protrusion 71 in this application can be any shape, such as a cuboid, cube, cylinder or other shape, as long as the side of the protrusion 71 facing the second plate 4 can at least partially abut against the end of the second housing 2 away from the second plate 4, and the shape of the hole 112 provided on the first plate 11 should match the shape of the protrusion 71.

[0075] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A protective housing for a pluggable circuit board, the pluggable circuit board comprising a circuit board body and terminals, the protective housing having a first direction extending along its height, a second direction extending along its length, and a third direction extending along its width, characterized in that, The protective shell includes: First shell; and The second housing, along the first direction, is disposed on one side of the first housing, and the first housing covers the second housing to form a mounting cavity for accommodating the circuit board body between the first housing and the second housing; The first housing has a first plate extending towards the second housing at one end along the second direction, and the first plate abuts against and is fixedly connected to the second housing.

2. The protective shell as described in claim 1, characterized in that, The protective shell also includes a second plate, which is disposed at the end of the first shell away from the first plate in the second direction; The ends of the first housing and the second housing facing the second plate are both abutted against and fixedly connected to the second plate; One of the first plate and the second plate has a through hole extending along the second direction for at least a portion of the terminal block to extend outward from the mounting cavity.

3. The protective shell as described in claim 1, characterized in that, The first housing includes: Substrate, the first plate is connected to one end of the substrate along the second direction; and Two third plates are respectively connected to opposite sides of the substrate along the third direction, and the two third plates extend toward the second housing; The second housing has a slot corresponding to the third plate on the side facing the first housing. In the first direction, the third plate is at least partially inserted into the corresponding slot.

4. The protective shell as described in claim 3, characterized in that, In the third direction, the width of the slot is denoted as S1, and the thickness of the third plate is denoted as S2, where S1 is greater than S2; So that when at least a portion of the third plate is inserted into the slot along the first direction, the third plate can be driven to move relative to the slot in the third direction.

5. The protective shell as described in claim 4, characterized in that, The protective shell also includes an elastic pressing portion extending along the second direction, the elastic pressing portion including a first elastic element; The first elastic member is housed within the slot, and in the third direction, one side of the first elastic member abuts against the side wall of the third plate, and the other side abuts against the side wall of the slot.

6. The protective shell as described in claim 5, characterized in that, The elastic pressure-resistant part further includes: A second elastic member, accommodated within the slot, is disposed on the side of the third plate opposite to the first elastic member in the third direction; in the third direction, the side of the second elastic member facing the third plate abuts against the third plate and / or the side of the second elastic member opposite to the third plate abuts against the slot side arm; and In the third direction, the connector is respectively connected to the first elastic member and the second elastic member at its opposite ends; in the first direction, the connector is sandwiched between the third plate and the bottom wall of the slot.

7. The protective shell as described in claim 3, characterized in that, In the third direction, both of the third plates are provided with ventilation holes so that the space between the two third plates forms a heat dissipation channel.

8. The protective casing as described in any one of claims 1-7, characterized in that, In the third direction, mounting grooves communicating with the mounting cavity are respectively provided on opposite sides inside the second housing. The mounting grooves extend along the second direction and penetrate at least one end of the second housing in the second direction.

9. The protective casing as described in any one of claims 1-7, characterized in that, The first housing and the second housing are aluminum alloy structural components.

10. A pluggable circuit board, characterized in that, The protective shell includes any one of claims 1-9.

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