Shielding assembly

Abstract

The utility model discloses a shielding assembly, comprising a circuit board provided with a plurality of via holes; the shell comprises bosses in one-to-one correspondence with the via holes, and the bosses are used for penetrating through the corresponding via holes and are in clearance fit with the corresponding via holes; and the metal shielding bodies are in one-to-one correspondence with the bosses, each metal shielding body comprises a first part and a second part, the first parts are welded on the circuit board, and the second parts are used for being in interference fit with the corresponding bosses. Requirements on part tolerance and assembly difficulty can be reduced, and meanwhile assembly success rate is improved.

Description

Technical Field

[0001] The utility model relates to the electronic field, in particular to a shielding component. Background Art

[0002] With the development of electric vehicles, the requirements for vehicle inverters are getting higher and higher. The electromagnetic environment inside the inverter is complex, and a shielding body is needed to shield high-radiation parts to prevent them from interfering with other parts.

[0003] At present, the commonly used shielding method is to weld multiple shielding clips on the circuit board, and the inverter housing and each shielding clip are interference fit to achieve EMC (Electromagnetic Compatibility) shielding. However, this shielding method requires the boss part of the inverter housing to be interference fit with each shielding clip, which places high requirements on the shape tolerance and welding position accuracy of the shielding clip parts. At the same time, the shielding clip is usually set on the bottom surface of the circuit board (i.e., the side close to the housing), which means that during assembly, the top surface of the circuit board (i.e., the side close to the housing) will block the staff's observation and inspection of the assembly process. Therefore, since it is impossible to visually observe, the difficulty of assembly is increased, and it is easy to cause assembly dislocation or deformation, reducing the success rate of assembly, and the installation results cannot be inspected after assembly. Utility Model Content

[0004] The utility model aims to solve the problem that the inverter housing cannot be visually inspected after assembly, the assembly is difficult, and the parts tolerance requirements are high. The utility model provides a shielding assembly that can reduce the requirements for part tolerances and assembly difficulty, while improving the assembly success rate.

[0005] In order to solve the above technical problems, the embodiment of the utility model discloses a shielding assembly, including:

[0006] A circuit board, wherein the circuit board is provided with a plurality of vias;

[0007] A housing, the housing comprising a plurality of bosses corresponding to the via holes one by one, each of the bosses being used to pass through the via hole corresponding thereto and to be gap-matched with the via hole corresponding thereto;

[0008] A plurality of metal shielding bodies corresponding to the bosses one by one, each of the metal shielding bodies comprises a first part and a second part, the first part is welded on the circuit board, and the second part is used for interference fit with the bosses corresponding thereto.

[0009] This embodiment can be applied to any field that requires electromagnetic shielding, such as electronic equipment, communication systems, aerospace, military applications, and medical equipment. For the convenience of description, this embodiment is explained by taking the installation in an inverter as an example.

[0010] By adopting the above technical solution, a plurality of vias are opened on the circuit board, and the boss on the shell (such as the shell of the inverter) passes through the vias and fits with the gap of the vias, and interferes with the second part of the metal shielding body, so as to achieve EMC (Electromagnetic Compatibility) shielding. The shielding method is simple. At the same time, the boss of the shell (such as the shell of the inverter) fits with the gap of the via, that is, the actual size of the via is always greater than or equal to the actual size of the boss. Therefore, compared with the interference fit, the shape tolerance requirement of the via is reduced, and the assembly difficulty is also reduced. Compared with the interference fit of the shielding clip on the side of the circuit board close to the shell, the assembly method through the via is simpler and the assembly results can be visually inspected or automatically detected, thereby avoiding deformation or dislocation of the metal shielding body and improving the assembly success rate.

[0011] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a shielding assembly, wherein the first part is welded on a side of the circuit board close to the shell along a first direction, the second part passes through the via hole, and is used to abut against the boss along a second direction so that the second part has an interference fit with the boss corresponding to it, and the second direction intersects with the first direction.

[0012] By adopting the above technical solution, the boss and the via are gap-matched, and the second part of the metal shield passes through the via so that the second part and the boss have an interference fit. That is to say, the second part and the via now form an interference space. In layman's terms, the distance between the side of the second part close to the boss and the via wall opposite to it is smaller than the actual size of the boss, so that the boss can have an interference fit with the second part when passing through the interference space.

[0013] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a shielding assembly, wherein along a first direction, the first part and the second part are both located on a side of the circuit board away from the shell, and the second part is used to abut against the part of the boss passing through the via hole along a second direction so that the second part has an interference fit with the boss corresponding to it, and the second direction intersects with the first direction.

[0014] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses a shielding assembly, wherein the angle between the first part and the second part is an obtuse angle.

[0015] By adopting the above technical solution, the angle between the first part and the second part is an obtuse angle, that is, when the second part passes through the via hole, the distance between the side of the second part close to the boss and the via hole wall opposite thereto is smaller than the actual size of the boss, so that the boss can have an interference fit with the second part when passing through the via hole, and when the second part is located on the side of the circuit board away from the shell, along the first direction, the second part is located above the via hole, so that when the boss passes through the via hole, it can abut against the second part along the second direction, thereby achieving an interference fit with it.

[0016] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a shielding assembly, along a first direction, the first part and the second part are both located on a side of the circuit board away from the shell, the second part includes a first connecting plate and a second connecting plate, one end of the first connecting plate is connected to the first part, and the other end is connected to the second connecting plate, the angle between the first connecting plate and the first part is an obtuse angle, the angle between the first connecting plate and the second connecting plate is an obtuse angle, the connection between the first connecting plate and the second connecting plate is used to abut with the part of the boss passing through the through hole along the second direction, so that the second part and the corresponding boss are interference fit, and the second direction intersects with the first direction.

[0017] By adopting the above technical solution, the first part, the first connecting plate and the second connecting plate are connected in sequence, and the angle between the first part and the first connecting plate is an obtuse angle, so that along the first direction, the first connecting plate is located above the through hole, and the angle between the first connecting plate and the second connecting plate is an obtuse angle, so that the connection between the second connecting plate and the first connecting plate can abut against the boss along the second direction to achieve an interference fit between the second part and the boss.

[0018] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a shielding assembly, the metal shielding body includes the first part and the second part symmetrically arranged along the first direction, the second parts symmetrical to each other enclose an interference space, and the boss is used to pass through the via hole into the interference space to interference fit with the second part.

[0019] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a shielding assembly, each of the second parts includes a third connecting plate and a fourth connecting plate, one end of the third connecting plate is connected to the first part, and the other end is connected to the fourth connecting plate, the angle between the third connecting plate and the first part is an obtuse angle, the angle between the third connecting plate and the fourth connecting plate is an obtuse angle, and the connection between the mutually symmetrical third connecting plates and the fourth connecting plates encloses the interference space.

[0020] By adopting the above technical solution, the first part, the third connecting plate and the fourth connecting plate are connected in sequence, and the angle between the first part and the third connecting plate is an obtuse angle, so that along the first direction, the third connecting plate is located above the through hole, and the angle between the third connecting plate and the fourth connecting plate is an obtuse angle, so that the connection between the mutually symmetrical fourth connecting plate and the third connecting plate can abut against the boss along the second direction to form an interference space, so that when the boss passes through the through hole and enters the interference space, it can be interference fit with the second part.

[0021] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a shielding assembly, wherein the mutually symmetrical fourth connecting plates are connected through a fifth connecting plate, the fifth connecting plate and the boss are spaced apart along the first direction, and together with the mutually symmetrical fourth connecting plate and the third connecting plate, form an accommodating space, and the accommodating space is used to accommodate the boss.

[0022] By adopting the above technical solution, by providing a fifth connecting plate spaced apart from the boss along the second direction, the force applied to the mutually symmetrical first parts can be dispersed to prevent them from detaching from the circuit board and affecting the shielding effect.

[0023] According to another specific embodiment of the present utility model, the embodiment of the present utility model discloses a shielding assembly, which also includes a sixth connecting plate, and the sixth connecting plate is welded to a side of the circuit board away from the boss.

[0024] By adopting the above technical solution, when the housing and the circuit board are assembled, the sixth connecting plate is located between the housing and the circuit board, so that there is no gap between the two, thereby ensuring the continuity of EMC.

[0025] According to another specific embodiment of the present utility model, the embodiment of the present utility model discloses a shielding assembly, and the second part is elastic.

[0026] By adopting the above technical solution, when the second part and the boss are interference fit, the boss generates pressure on the second part, and the second part has elasticity to buffer the force, thereby preventing the reaction force of the second part on the boss from damaging the boss. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A perspective view showing the prior art;

[0028] Figure 2 An enlarged cross-sectional schematic diagram of the prior art is shown;

[0029] Figure 3 An exploded view of a circuit board and a metal shielding body of a shielding assembly provided by the utility model is shown;

[0030] Figure 4An exploded view of a housing and a circuit board of a shielding assembly provided by the utility model is shown;

[0031] Figure 5 A schematic diagram showing the relationship between the metal shielding body and the boss provided by the utility model is shown, wherein a first form of the metal shielding body is shown;

[0032] Figure 6 A partial stereoscopic view of the shielding assembly provided by the utility model is shown, wherein a first form of a metal shielding body is shown;

[0033] Figure 7a A schematic diagram showing the positional relationship of the shielding assembly provided by the utility model is shown, wherein a first form of a metal shielding body is shown;

[0034] Figure 7b A schematic diagram showing the positional relationship of the shielding assembly provided by the utility model, wherein the metal shielding body is Figure 7a deformation;

[0035] Figure 8 A schematic diagram showing the relationship between the metal shielding body and the boss provided by the utility model is shown, wherein a second form of the metal shielding body is shown;

[0036] Figure 9a A schematic diagram showing the shape of the metal shield provided by the utility model is shown, wherein a second form of the metal shield is shown;

[0037] Figure 9b The schematic diagram of the shape of the metal shield provided by the utility model is shown, wherein the metal shield is Figure 9a A variation of

[0038] Fig.9c The schematic diagram of the shape of the metal shield provided by the utility model is shown, wherein the metal shield is Figure 9a Another variation of .

[0039] Figure numerals: 1. circuit board; 10. top surface; 11. bottom surface; 12. via; 100. shielding clip; 101. connecting part; 2. shell; 20. boss; 21. first shell; 22. second shell; 23. guide part; 3. metal shielding body; 30. first part; 31. second part; 311. first connecting plate; 312. second connecting plate; 313. third connecting plate; 314. fourth connecting plate; 315. fifth connecting plate; 316. interference space; 317. accommodating space; 4. sixth connecting plate. DETAILED DESCRIPTION

[0040] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0041] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0042] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0043] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0044] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0045] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] With the development of electric vehicles, the requirements for vehicle inverters are getting higher and higher. The electromagnetic environment inside the inverter is complex, and a shielding body is needed to shield high-radiation parts to prevent them from interfering with other parts.

[0047] refer to Figure 1 and Figure 2 The circuit board 1 has a top surface 10 (i.e., a side close to the boss 20 described later) and a bottom surface 11 arranged opposite thereto (i.e., a side away from the boss 20 described later). The commonly used shielding method is to weld a plurality of shielding clips 100 along the periphery of the bottom surface 11, such as Figure 1 24 are shown, but not limited thereto, the housing 2 (such as the housing of the inverter) includes a boss 20, and the boss 20 is interference-fitted with each shielding clip 100 to achieve EMC (Electromagnetic Compatibility) shielding.

[0048] However, this shielding method requires interference fit between the boss 20 and each shielding clip 100, which places high demands on the shape tolerance of the parts and the welding position accuracy of the shielding clip 100. At the same time, the shielding clip 100 is usually arranged on the bottom surface 11 of the circuit board. This increases the difficulty of assembly due to the inability to visually inspect the components during assembly. It is also easy to cause assembly misalignment or deformation, and the installation results cannot be inspected after assembly.

[0049] For this purpose, refer to Figure 3 and Figure 4 The embodiment of the present application provides a shielding component, by opening a plurality of via holes 12 on a circuit board 1, a boss 20 on a housing 2 (such as a housing of an inverter) passes through the via holes 12 and is clearance-fitted with the via holes 12, and is interference-fitted with a metal shielding body 3, so as to achieve EMC (Electromagnetic Compatibility) shielding, and the shielding method is simple. At the same time, the boss 20 of the housing 2 (such as a housing of an inverter) is clearance-fitted with the via holes 12, and the shape tolerance requirement of the via holes 12 is low. Compared with the interference fit of the shielding clip 100 with the bottom surface 11 of the circuit board 1, the assembly method through the via holes 12 is simpler and the assembly results can be visually inspected, which greatly reduces the difficulty of assembly.

[0050] refer to Figure 3 and Figure 4 The present application provides a shielding assembly for use in an inverter, but is not limited thereto. The shielding assembly can be applied to any field requiring electromagnetic shielding, such as electronic equipment (such as electric vehicles), communication systems, aerospace, military applications, and medical equipment. The shielding assembly includes: a circuit board 1, a housing 2, a plurality of metal shielding bodies 3 corresponding to the bosses 20 described later, and a sixth connecting plate 4, along a first direction (i.e. Figure 3The circuit board 1 has a top surface 10 and a bottom surface 11 opposite thereto. The top surface 10 is a side close to a boss 20 to be assembled later, and the bottom surface 11 is a side away from the boss 20 to be assembled later. The bottom surface 11 is connected to a connecting portion 101 for connecting to an external device. The circuit board 1 is provided with ten vias 12.

[0051] For example, reference Figure 4 The shell 2 is in the shape of a rectangular parallelepiped, and includes a first shell 21 and a second shell 22. The first shell 21 and the second shell 22 are both in the shape of a rectangular parallelepiped with a cavity. The second shell 22 surrounds the first shell 21. The shape of the first shell 21 is adapted to the shape of the circuit board 1, that is, the circuit board 1 can be completely placed on the first shell 21.

[0052] For example, reference Figures 3 to 5 , along the first direction (i.e. Figure 3 The first shell 21 has a first shell 21 facing the circuit board 1, and one side of the first shell 21 facing the circuit board 1 protrudes upward along the first direction to form ten bosses 20 that match the above-mentioned via holes 12 one by one. The bosses 20 extend along the first direction and are used to pass through the via holes 12 and fit with the via holes 12. A guide portion 23 is provided on the top of the boss 20. The guide portion 23 is in an inverted triangle shape to facilitate passing through the via holes 12.

[0053] For example, reference Figure 4 Combined with Figure 7a and Figure 7b , in layman's terms, is the actual size of the via 12 (i.e. Figure 7a or Figure 7b L1 shown) is larger than the actual size of the boss 20 (i.e. Figure 7a or Figure 7b L2 as shown, therefore, compared with the interference fit, the shape tolerance requirement of the through hole 12 is reduced, the assembly difficulty is also reduced, and relative to the shielding clip 100 (reference Figure 1 and Figure 2 ) Interference fit, the assembly method through the through hole 12 is simpler and the assembly results can be visually inspected, thereby increasing the assembly success rate.

[0054] It can be understood that the embodiment of the present application does not limit the specific shape of the shell 2, which can be determined according to the specifications of the inverter. The embodiment of the present application does not limit the number and shape of the vias 12, bosses 20 and metal shielding body 3, which can be selected according to the actual requirements for the EMC of the inverter, such as 9, 11, 15, 20, etc.

[0055] For example, reference Figures 3 to 5 The metal shield 3 includes a first portion 30 and a second portion 31, and the first portion 30 and the second portion 31 are both along the third direction (ie Figure 4The first portion 30 is welded on the circuit board 1, for example, by SMT (Surface Mount Technology) and the second portion 31 is used for interference fit with the boss 20 to achieve EMC (Electromagnetic Compatibility) shielding.

[0056] For example, continue to refer to Figures 3 to 5 The second part 31 of the metal shield 3 may be elastic. When the second part 31 is interference fit with the boss 20, the boss 20 generates pressure on the second part 31. The second part 31 is elastic and can buffer the force, thereby preventing the reaction force of the second part 31 on the boss 20 from damaging the boss 20. Of course, the first part 30 may also be elastic or inelastic.

[0057] By opening multiple vias 12 on the circuit board 1, the boss 20 on the shell 2 (such as the shell of the inverter) passes through the vias 12 and fits with the vias 12 with a clearance, and has an interference fit with the second part 31 of the metal shielding body 3, so as to achieve EMC (Electromagnetic Compatibility) shielding, and the shielding method is simple.

[0058] For example, reference Figure 3 and Figure 4 The sixth connecting plate 4 is welded to the bottom surface 11 of the circuit board 1 and is located between the circuit board 1 and the housing 2 during assembly, so that there is no gap between the circuit board 1 and the housing 2, thereby ensuring the continuity of EMC.

[0059] The metal shield 3 can be in various shapes, can be a one-piece type or a multi-piece type, and the structure can be flexibly adjusted, as long as the first part 30 is welded on the circuit board 1 and the second part 31 is used for interference fit with the boss 20. Figures 5 to 9c Four shapes of the metal shield 3 are listed.

[0060] Embodiment 1

[0061] First shape:

[0062] For example, reference Figures 5 to 7a , along the second direction (i.e. Figure 6 The metal shield 3 is arranged on the right side of the via hole 12, but is not limited thereto. It can also be arranged on the left side of the via hole 12. Figure 6The first portion 30 is welded to the bottom surface 11 of the circuit board 1, i.e., the side away from the assembled boss 20, and the second portion 31 passes through the via hole 12 and is used to abut against the boss 20 along the second direction so that the second portion 31 and the boss 20 are interference fit.

[0063] Specifically, the second portion 31 is connected to the first portion 30 to form an L-shaped shape, and the angle between the second portion 31 and the first portion 30 (i.e. Figure 5 The angle α1) shown is an obtuse angle, that is, greater than 90°, that is, along the second direction, the second portion 31 is inclined toward the left side of the via hole 12 .

[0064] In layman's terms, the second portion 31 extends from one side of the boss 20 to the via wall opposite thereto (along the second direction, i.e. Figure 7a The distance between the left via wall shown Figure 7a L3 shown) is smaller than the actual size of the boss 20 (i.e. Figure 7a L2 as shown), so that the boss 20 can be interference fit with the second part 31 when passing through here, that is, under the extrusion of the left through-hole wall and the second part 31, the boss 20 can abut the second part 31 on the right along the second direction and be interference fit therewith.

[0065] It should be noted that the embodiment of the present application does not limit the specific value of α1, as long as it is greater than 90°, for example, 91°, 95°, 99°, 100°, 120°, etc., which can be determined based on the actual size of the via 12 (i.e. Figure 7a L1 shown) and the actual size of the boss 20 (i.e. Figure 7a When the difference between the two is large, α1 becomes larger accordingly, and when the difference between the two is small, α1 becomes smaller accordingly.

[0066] Second shape:

[0067] For example, reference Figure 7b Similarly, the metal shield 3 can also change its position along the second direction (i.e. Figure 7b The metal shielding body 3 is arranged on the right side of the via hole 12, but is not limited thereto. It can also be arranged on the left side of the via hole 12. The above-mentioned L-shaped metal shielding body 3 can be transferred as a whole to the top surface 10, that is, the side of the circuit board 1 away from the shell 2.

[0068] Specifically, along the first direction (i.e. Figure 7bThe first part 30 and the second part 31 are both located on a side of the circuit board 1 away from the housing 2, the first part 30 is welded to the top surface 10, and the second part 31 is connected to the first part 30 to form an L-shaped shape, and the second part 31 is used to abut against the part of the boss 20 passing through the through hole 12 along the second direction, so that the second part 31 and the boss 20 have an interference fit.

[0069] Exemplarily, the angle between the second part 31 and the first part 30 is an obtuse angle, that is, greater than 90°, that is, along the second direction, the second part 31 is inclined along the left direction toward the through hole 12, that is, along the first direction, the second part 31 is located above the through hole 12 at this time, so that when the boss 20 passes through the through hole 12, it can abut against the second part 31 along the second direction, thereby achieving an interference fit therewith.

[0070] Embodiment 2

[0071] The third shape:

[0072] For example, reference Figure 8 and Figure 9a The metal shield 3 includes a first direction (i.e. Figure 8 The first part 30 and the second part 31 are symmetrically arranged (in the X direction shown in the figure), and the second part 31 symmetrically forms an interference space 316. The boss 20 is used to pass through the through hole 12 and enter the interference space 316 to have an interference fit with the second part 31.

[0073] For example, reference Figure 8 and Figure 9a , the first portion 30 is along the second direction (ie Figure 8 The Y direction shown) and the third direction (i.e. Figure 8 The edge of the first portion 30 may be flush with the edge of the via hole 12 or may exceed the edge of the via hole 12, so that part of the first portion 30 is located above the via hole 12. Figure 7a or Figure 7b L1 shown) and the actual size of the boss 20 (i.e. Figure 7b or Figure 7b When the difference between the two is large, the edge of the first portion 30 can exceed the edge of the via 12. When the difference between the two is small, the edge of the first portion 30 can be flush with the edge of the via 12, as long as the second portion 31 can achieve an interference fit with the boss 20.

[0074] Exemplarily, the second portion 31 on the left side includes a third connecting plate 313 and a fourth connecting plate 314, one end of the third connecting plate 313 is connected to the first portion 30, and the other end is connected to the fourth connecting plate 314, and the angle between the third connecting plate 313 and the first portion 30 (i.e. Figure 9a The angle α2 shown in the figure is an obtuse angle, that is, greater than 90°, and the angle between the third connecting plate 313 and the fourth connecting plate 314 (i.e. Figure 9a The angle α3) shown is an obtuse angle, ie greater than 90°.

[0075] Similarly, the second portion 31 on the right side also includes a third connecting plate 313 and a fourth connecting plate 314. One end of the third connecting plate 313 is connected to the first portion 30, and the other end is connected to the fourth connecting plate 314. The angle between the third connecting plate 313 and the first portion 30 (i.e. Figure 9a The angle α2 shown in the figure is an obtuse angle, that is, greater than 90°, and the angle between the third connecting plate 313 and the fourth connecting plate 314 (i.e. Figure 9a The angle α3) shown is an obtuse angle, that is, greater than 90°, so that the third connecting plate 313 and the fourth connecting plate 314 symmetrical to each other can abut against the boss 20 along the second direction.

[0076] That is, along the second direction, the third connecting plate 313 on the left is inclined to the right, the fourth connecting plate 314 on the left is inclined to the left, the third connecting plate 313 on the right is inclined to the left, and the fourth connecting plate 314 on the right is inclined to the right, so that the connection between the third connecting plate 313 and the fourth connecting plate 314 which are symmetrical to each other forms an interference space 316.

[0077] For example, continue to refer to Figure 8 and Figure 9a The mutually symmetrical fourth connecting plates 314 are connected through the fifth connecting plate 315. The fifth connecting plate 315 is spaced apart from the boss 20 along the first direction, and together with the mutually symmetrical fourth connecting plate 314, the third connecting plate 313 and the first part 30, forms an accommodating space 317 for accommodating the boss 20.

[0078] The fourth shape:

[0079] For example, reference Figure 9b and Fig.9c Combined with Figure 7a The metal shielding body 3 may also be half of the above, that is, it may only include the first part 30 and the second part 31 symmetrically arranged on the left side of the circuit board 1, or only include the first part 30 and the second part 31 symmetrically arranged on the right side of the circuit board 1.

[0080] For example, reference Figure 8 and Figure 9b Specifically, the first portion 30 is arranged along the second direction (ie Figure 8 The Y direction shown) and the third direction (i.e. Figure 8 The edge of the first portion 30 may be flush with the edge of the via hole 12 or may exceed the edge of the via hole 12 so that the portion is located above the via hole 12. Figure 7a L1 shown) and the actual size of the boss 20 (i.e. Figure 7a When the difference between the two is large, the edge of the first portion 30 can exceed the edge of the via 12. When the difference between the two is small, the edge of the first portion 30 can be flush with the edge of the via 12, as long as the second portion 31 can achieve an interference fit with the boss 20.

[0081] Exemplarily, the second part 31 includes a first connecting plate 311 and a second connecting plate 312. One end of the first connecting plate 311 is connected to the first part 30, and the other end is connected to the second connecting plate 312. The angle between the second connecting plate 312 and the first part 30 (i.e. Figure 9b The angle α2 shown in the figure is an obtuse angle, that is, greater than 90°, and the angle between the first connecting plate 311 and the second connecting plate 312 (i.e. Figure 9b The angle α3) shown is an obtuse angle, that is, greater than 90°, so that the connection between the second connecting plate 312 and the first connecting plate 311 can abut against the boss 20 along the second direction to achieve an interference fit between the second part 31 and the boss 20.

[0082] That is to say, reference Figure 9b Combined with Figure 7a When only the first part 30 and the second part 31 are symmetrically arranged on the left side of the circuit board 1, along the second direction, the first connecting plate 311 is inclined to the right, and the second connecting plate 312 is inclined to the left. Fig.9c Combined with Figure 7a When only the first part 30 and the second part 31 are symmetrically arranged on the right side of the circuit board 1, the first connecting plate 311 is inclined to the left, and the second connecting plate 312 is inclined to the right.

[0083] It should be noted that the embodiment of the present application does not limit the specific values ​​of α2 and α3, as long as they are greater than 90°, for example, 91°, 95°, 99°, 100°, 120°, etc., which can be determined based on the actual size of the via 12 (i.e. Figure 7a L1 shown) and the actual size of the boss 20 (i.e. Figure 7a When the difference between the two is large, α2 becomes larger and α3 becomes smaller accordingly. When the difference between the two is small, α2 becomes smaller and α3 becomes larger accordingly.

[0084] The first direction (i.e. Figure 4The X direction shown), the second direction (i.e. Figure 4 The Y direction shown) and the third direction (i.e. Figure 4 The first direction, the second direction and the third direction are perpendicular to each other, but are not limited thereto, as long as the first direction, the second direction and the third direction intersect with each other respectively.

[0085] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A shielding assembly, characterized in that: include: A circuit board, wherein the circuit board is provided with a plurality of vias; A housing, the housing comprising a plurality of bosses corresponding to the via holes one by one, each of the bosses being used to pass through the via hole corresponding thereto and to be gap-matched with the via hole corresponding thereto; A plurality of metal shielding bodies corresponding to the bosses one by one, each of the metal shielding bodies comprises a first part and a second part, the first part is welded on the circuit board, and the second part is used for interference fit with the bosses corresponding thereto.

2. The shielding assembly according to claim 1, wherein: Along the first direction, the first part is welded on a side of the circuit board close to the shell, the second part passes through the via hole and is used to abut against the boss along the second direction so that the second part has an interference fit with the corresponding boss, and the second direction intersects with the first direction.

3. The shielding assembly according to claim 1, wherein: Along the first direction, the first part and the second part are both located on a side of the circuit board away from the shell, and the second part is used to abut against the part of the boss passing through the via hole along the second direction so that the second part has an interference fit with the corresponding boss, and the second direction intersects with the first direction.

4. The shielding assembly according to claim 2 or 3, characterized in that: The angle between the first portion and the second portion is an obtuse angle.

5. The shielding assembly according to claim 1, wherein: Along the first direction, the first part and the second part are both located on a side of the circuit board away from the shell, and the second part includes a first connecting plate and a second connecting plate, one end of the first connecting plate is connected to the first part, and the other end is connected to the second connecting plate, the angle between the first connecting plate and the first part is an obtuse angle, and the angle between the first connecting plate and the second connecting plate is an obtuse angle, and the connection between the first connecting plate and the second connecting plate is used to abut against the part of the boss passing through the through hole along the second direction so that the second part has an interference fit with the boss corresponding to it, and the second direction intersects with the first direction.

6. The shielding assembly according to claim 1, wherein: The metal shielding body comprises the first part and the second part symmetrically arranged along the first direction, the second parts symmetrically arranged to each other enclose an interference space, and the boss is used to pass through the via hole into the interference space to have an interference fit with the second part.

7. The shielding assembly according to claim 6, characterized in that Each of the second parts includes a third connecting plate and a fourth connecting plate, one end of the third connecting plate is connected to the first part, and the other end is connected to the fourth connecting plate, the angle between the third connecting plate and the first part is an obtuse angle, and the angle between the third connecting plate and the fourth connecting plate is an obtuse angle, and the connection between the third connecting plate and the fourth connecting plate which are symmetrical to each other encloses the interference space.

8. The shielding assembly according to claim 7, wherein: The mutually symmetrical fourth connecting plates are connected through a fifth connecting plate. The fifth connecting plate and the boss are spaced apart along the first direction and together with the mutually symmetrical fourth connecting plate and the third connecting plate form a receiving space for receiving the boss.

9. The shielding assembly according to claim 1, wherein: It also includes a sixth connecting plate, which is welded to a side of the circuit board close to the shell.

10. The shielding assembly according to claim 1, wherein: The second portion is elastic.

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