filter

Abstract

The application belongs to the technical field of electronic devices, and discloses a filter which comprises a socket and a PCB board, the socket comprises a base, a positioning assembly and two first conductive columns, the two first conductive columns are arranged at intervals and are arranged through the base, and the positioning assembly is arranged on the base; the PCB board is positioned on the positioning assembly, one end of the first conductive column is electrically connected to the PCB board, the other end is a butt joint end, and the butt joint end is used for electrically connecting a butt joint device. The first conductive column is arranged through the base, one end thereof is electrically connected to the PCB board, the other end is a butt joint end, the butt joint end is used for electrically connecting the butt joint device, electrical connection between the filter and the butt joint device is realized, and the PCB board is directly connected to the socket, so that a line between the PCB board and the socket is omitted. The filter provided by the application has a compact structure, occupies a small space, and has high reliability of electrical connection.

Description

Technical Field

[0001] This invention belongs to the field of electronic device technology, and in particular relates to a filter. Background Technology

[0002] A filter is a frequency-selective device that allows specific frequency components of a signal to pass through while significantly attenuating other frequency components. This frequency-selective property of filters can be used to filter out interference noise or perform spectrum analysis.

[0003] Currently, the filter's PCB board and socket are connected to different locations on the housing. The PCB board is electrically connected to the conductive posts on the socket via wiring. This arrangement results in the PCB board, socket, and components connected to the PCB board being scattered, occupying a lot of space and causing the filter to be large in size. Moreover, the filter has many internal wirings, which can easily lead to unreliable electrical connections.

[0004] Therefore, a filter is urgently needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a filter that has a compact structure, occupies little space, and has high reliability in electrical connections.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The filter includes: a socket comprising a base, a positioning component, and two first conductive posts, the two first conductive posts being spaced apart from each other and passing through the base, the positioning component being disposed on the base; a PCB board positioned on the positioning component, one end of each first conductive post being electrically connected to the PCB board, and the other end being a mating end for electrically connecting to a mating device; wherein, the positioning component includes two first positioning protrusions and two socket terminals, the first positioning protrusions being connected to the base, the two first positioning protrusions and the two socket terminals being arranged one-to-one, one end of each first positioning protrusion and its corresponding socket terminal abutting against opposite sides of the PCB board, and the other end of each socket terminal being electrically connected to a first conductive post.

[0008] As a preferred technical solution for the above-mentioned filter, the positioning component further includes two limiting blocks connected to the base. The two limiting blocks and two first positioning protrusions are set in a one-to-one correspondence. Each limiting block and its corresponding first positioning protrusion form a first positioning groove, and each socket terminal is positioned in a first positioning groove.

[0009] As a preferred technical solution of the above-mentioned filter, one end of the socket terminal is provided with a folded part, which abuts against the side wall of the PCB board away from the first positioning protrusion, and the other end of the socket terminal is provided with a first through hole, and one end of the first conductive post passes through the first through hole.

[0010] As a preferred technical solution for the above-mentioned filter, the filter also includes two capacitors. A second through hole is provided on the folded part. The capacitors are disposed on the substrate. One end of each capacitor passes through a second through hole and is inserted into the PCB board, and the other end is inserted into the PCB board.

[0011] As a preferred technical solution for the above-mentioned filter, a recessed portion is provided on the substrate, and both capacitors are disposed within the recessed portion.

[0012] As a preferred technical solution for the above-mentioned filter, the top of the recess is covered with an insulating protective plate.

[0013] As a preferred technical solution for the above-mentioned filter, the positioning component further includes several second positioning protrusions, which are connected to the substrate and abut against a side wall of the PCB board.

[0014] As a preferred technical solution for the above-mentioned filter, each second positioning protrusion has a protruding locking block, and the end of the PCB board has several slots, with the locking blocks correspondingly engaging in the slots.

[0015] As a preferred technical solution of the above-mentioned filter, the socket also includes a second conductive post, a grounding wire and a grounding terminal. The second conductive post is inserted into the base. The second conductive post and the two first conductive posts are respectively set at the three corners of a triangle. One end of the second conductive post is inserted into the grounding terminal and the other end is used for electrical connection to the docking device. One end of the grounding wire is connected to the grounding terminal and the other end is inserted into the PCB board.

[0016] As a preferred technical solution of the above-mentioned filter, a first flange is provided on the side of the grounding terminal, and a third through hole is provided on the first flange. One end of the grounding wire passes through the third through hole and is bent to form a hook.

[0017] As a preferred technical solution for the above-mentioned filter, the filter also includes a housing, which is fitted over the socket and the PCB board. The end of the grounding terminal facing away from the second conductive post has a second flange, which is inserted into the housing.

[0018] As a preferred technical solution for the above-mentioned filter, a blocking part is provided on the substrate, which blocks the grounding terminal and the socket terminal.

[0019] As a preferred technical solution for the above-mentioned filter, at least two third positioning protrusions are provided on the substrate, and the at least two third positioning protrusions form a second positioning groove, with the grounding terminal positioned in the second positioning groove.

[0020] As a preferred technical solution for the above-mentioned filter, the filter also includes a housing, which includes a middle housing, a rear housing, and a front cover. The middle housing is connected to the end of the substrate facing the PCB board, and the rear housing and the front cover are respectively connected to the two sides of the middle housing. The rear housing is fitted onto the outside of the PCB board, and the front cover is fitted onto the outside of the socket.

[0021] As a preferred technical solution for the above-mentioned filter, the middle housing is a square frame structure, which is fitted outside the PCB board and connected to the end face of the substrate facing the PCB board.

[0022] As a preferred technical solution of the above-mentioned filter, the middle shell includes a main frame, a front connecting edge and a rear connecting edge. The front connecting edge is connected at an angle to the outer edge of the main frame, and the rear connecting edge is connected at an angle to the inner edge of the main frame. The front connecting edge and the rear connecting edge are respectively located on both sides of the main frame. The front connecting edge is connected to the inner wall of the front cover, and the rear connecting edge is connected to the inner wall of the rear shell.

[0023] As a preferred technical solution for the above-mentioned filter, the housing also includes an insulating sleeve, which is fitted over the PCB board, and the middle housing and the rear housing are fitted over the insulating sleeve.

[0024] As a preferred technical solution for the aforementioned filter, a through groove is provided at the end of the front cover, and the head of the substrate passes through the through groove from inside the front cover. A gasket is sandwiched between the inner wall of the through groove and the outer wall of the substrate.

[0025] As a preferred technical solution for the above-mentioned filter, the filter also includes an X capacitor, a first Y capacitor, a second Y capacitor, a third Y capacitor, a fourth Y capacitor, and a common-mode inductor, all connected to the PCB board. The X capacitor is connected in parallel to the input terminal of the common-mode inductor. The series branch formed by the first Y capacitor and the second Y capacitor is connected in parallel with the X capacitor. A ground wire is provided between the first Y capacitor and the second Y capacitor. The series branch formed by the third Y capacitor and the fourth Y capacitor is connected in parallel to the output terminal of the common-mode inductor. A ground wire is provided between the third Y capacitor and the fourth Y capacitor.

[0026] The beneficial effects of this invention are:

[0027] This invention provides a filter whose socket includes a base, a positioning component, and two first conductive posts. The two first conductive posts are spaced apart and pass through the base. The positioning component is disposed on the base, and a PCB board is positioned on the positioning component. One end of each first conductive post is electrically connected to the PCB board, and the other end is a mating end used for electrical connection to a docking device. The filter provided by this invention has its PCB board directly connected to the socket, eliminating the wiring between the PCB board and the socket, resulting in a compact structure and improved reliability of the electrical connection. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the decomposed structure of the filter provided in an embodiment of the present invention. Figure 1 ;

[0030] Figure 2 This is an exploded structural diagram of the socket and PCB board provided in an embodiment of the present invention;

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 This is a schematic diagram of the filter structure provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the exploded structure of the filter provided in this embodiment of the invention after the outer shell is hidden;

[0034] Figure 6 yes Figure 1 Enlarged view of point B in the middle;

[0035] Figure 7 yes Figure 5 Enlarged view of point C in the middle;

[0036] Figure 8 This is a schematic diagram of the structure of the grounding terminal and grounding wire provided in an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the decomposed structure of the filter provided in an embodiment of the present invention. Figure 2 ;

[0038] Figure 10 yes Figure 9 Enlarged view of point D in the middle;

[0039] Figure 11 This is a circuit diagram of the filter provided in an embodiment of the present invention.

[0040] In the picture:

[0041] 1. Socket; 2. PCB board; 3. X capacitor; 4. First Y capacitor; 5. Second Y capacitor; 6. Third Y capacitor; 7. Fourth Y capacitor; 8. Common mode inductor; 9. Housing; 10. Live wire lead; 20. Neutral wire lead; 30. Lead wire; 40. Connector;

[0042] 11. Substrate; 12. Positioning assembly; 13. First conductive post; 14. Second conductive post; 15. Grounding wire; 16. Grounding terminal; 21. Slot; 91. Middle housing; 92. Rear housing; 93. Front cover; 94. Insulating protective plate; 95. Insulating sleeve; 96. Gasket;

[0043] 111. Recessed portion; 112. Barrier portion; 113. Third positioning protrusion; 121. First positioning protrusion; 122. Socket terminal; 123. Limiting block; 124. Second positioning protrusion; 125. Locking block; 131. Connecting end; 161. Fourth through hole; 162. Second flange; 163. First flange; 164. Third through hole; 911. Rear connecting edge; 912. Front connecting edge; 931. Through groove;

[0044] 1221, Folding part; 1222, First through hole; 1223, Second through hole; 9121, Groove. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "installed" should be interpreted broadly. For example, they can refer to a mounting connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0049] like Figure 1 As shown, this embodiment provides a filter, which includes a socket 1 and a PCB board 2. The PCB board 2 is directly connected to the socket 1, which eliminates the wiring between the PCB board and the socket in the prior art, making the structure compact and improving the reliability of the electrical connection.

[0050] Specifically, such as Figures 2 to 4 As shown, the socket 1 includes a base 11, a positioning component 12, and two first conductive posts 13. The two first conductive posts 13 are spaced apart from each other and pass through the base 11. The positioning component 12 is disposed on the base 11. The PCB board 2 is positioned on the positioning component 12. One end of the first conductive post 13 is electrically connected to the PCB board 2, and the other end is a docking end 131, which is used to electrically connect to the docking device.

[0051] The filter provided in this embodiment has a first conductive post 13 that passes through the substrate 11. One end of the first conductive post 13 is electrically connected to the PCB board 2, and the other end is a docking end 131. The docking end 131 is used to electrically connect to the docking device to realize the electrical connection between the filter and the docking device. The two first conductive posts 13 are used to electrically connect the live wire and the neutral wire, respectively. The PCB board 2 is directly connected to the socket 1, eliminating the wiring between the PCB board and the socket in the prior art, making the structure compact and improving the reliability of the electrical connection.

[0052] Specifically, such as Figure 2 and Figure 3 As shown, the positioning component 12 includes two first positioning protrusions 121 and two socket terminals 122. The first positioning protrusions 121 are connected to the base 11. The two first positioning protrusions 121 and the two socket terminals 122 are arranged in a one-to-one correspondence. One end of each first positioning protrusion 121 and its corresponding socket terminal 122 abuts against opposite sides of the PCB board 2, and the other end of each socket terminal 122 is electrically connected to a first conductive post 13. The first positioning protrusions 121 and the socket terminals 122 abut against opposite sides of the PCB board 2, fixing the positioning of the PCB board 2 and realizing the direct connection between the PCB board 2 and the socket 1. The socket terminals 122 also realize the electrical connection between the PCB board 2 and the first conductive post 13.

[0053] Specifically, such as Figure 3 and Figure 5As shown, one end of the socket terminal 122 is provided with a folded portion 1221, which abuts against the side wall of the PCB board 2 away from the first positioning protrusion 121. The folded portions 1221 of the two socket terminals 122 abut against the live wire input portion and the neutral wire input portion of the PCB board 2, respectively. The other end of the socket terminal 122 is provided with a first through hole 1222, and one end of the first conductive post 13 passes through the first through hole 1222. The folded portion 1221 improves the firmness of the socket terminal 122's positioning on the PCB board 2, and also improves the reliability of the electrical connection between the two. The first through hole 1222 and the first conductive post 13 are fitted together to ensure the firmness of the connection between the two.

[0054] More specifically, such as Figure 3 As shown, the positioning component 12 also includes two limiting blocks 123 connected to the base 11. The two limiting blocks 123 and two first positioning protrusions 121 are correspondingly arranged, with each limiting block 123 and its corresponding first positioning protrusion 121 forming a first positioning groove. Each socket terminal 122 is positioned in one of these first positioning grooves. The limiting blocks 123 improve the stability of the socket terminal 122, thereby ensuring the stability of the PCB board 2's positioning.

[0055] For further details, please refer to [link / reference]. Figure 3 Each of the first conductive posts 13 is spaced apart from the limiting block 123 and the first positioning protrusion 121. The first conductive posts 13 limit the position of one end of the socket terminal 122. If the position of the other end of the socket terminal 122 is not limited, the socket terminal 122 will rotate around the first conductive post 13. Therefore, the limiting block 123 and the first positioning protrusion 121 limit the rotation of the socket terminal 122, thereby firmly fixing the position of the socket terminal 122.

[0056] Specifically, such as Figure 2 and Figure 3 As shown, the positioning component 12 also includes several second positioning protrusions 124, which are connected to the base 11 and abut against a sidewall of the PCB board 2. The second positioning protrusions 124 further improve the firmness of the positioning of the PCB board 2.

[0057] For more details, see [link to relevant documentation] Figure 2 and Figure 3 Each second positioning protrusion 124 has a protruding locking block 125. The end of the PCB board 2 has several locking slots 21, and the locking blocks 125 are correspondingly engaged within these slots 21. In this embodiment, there are two locking blocks 125 and two locking slots 21. Of course, the number of locking blocks 125 and locking slots 21 can also be other, and this is not specifically limited here.

[0058] Optionally, two first positioning protrusions 121 abut against both ends of one side of the PCB board 2, and two second positioning protrusions 124 are disposed between the two first positioning protrusions 121, abutting against the same side of the PCB board 2 as the first positioning protrusions 121. With this configuration, one side of the PCB board 2 is fixed to the socket 1, ensuring that the remaining positions of the PCB board 2 are not interfered with by the socket 1, thereby guaranteeing that the PCB board 2 has sufficient space to install other components.

[0059] Specifically, such as Figure 5 and Figure 6 As shown, the filter also includes two capacitors. A second through hole 1223 is provided on the folded portion 1221. The capacitors are disposed on the base 11, and one end of each capacitor passes through a second through hole 1223 and is inserted into the PCB board 2. The capacitors passing through the second through hole 1223 have a limiting effect on one end of the socket terminal 122, further improving the positioning firmness of the socket terminal 122, and making the structure more compact. In this embodiment, the two capacitors are a first Y capacitor 4 and a second Y capacitor 5. One end of the first Y capacitor 4 passes through a second through hole 1223 and is inserted into the PCB board 2, and the other end is inserted into the PCB board 2. One end of the second Y capacitor 5 passes through another second through hole 1223 and is inserted into the PCB board 2, and the other end is inserted into the PCB board 2.

[0060] Specifically, both ends of the capacitor are connected to PCB board 2 via wave soldering. This ensures a strong connection and improves manufacturing efficiency.

[0061] Specifically, such as Figure 5 As shown, a recess 111 is provided on the substrate 11, and both capacitors are disposed within the recess 111. The recess 111 is used to accommodate the capacitors, providing both limiting and protection for them. In this embodiment, the first Y capacitor 4 and the second Y capacitor 5 are disposed within the recess 111.

[0062] Specifically, such as Figure 5 As shown, the socket 1 also includes a second conductive post 14, a grounding wire 15, and a grounding terminal 16. The second conductive post 14 passes through the base 11 and is positioned at the three corners of a triangle along with the two first conductive posts 13. One end of the second conductive post 14 is inserted into the grounding terminal 16, and the other end is used for electrical connection to the device. One end of the grounding wire 15 is connected to the grounding terminal 16, and the other end is inserted into the PCB board 2. The second conductive post 14 is used for grounding. The grounding wire 15 and the grounding terminal 16 achieve the electrical connection between the second conductive post 14 and the PCB board 2.

[0063] Specifically, such as Figure 5 and Figure 7As shown, a barrier portion 112 is provided protruding on the substrate 11. The barrier portion 112 blocks the grounding terminal 16 and the socket terminal 122, preventing the grounding terminal 16 and the socket terminal 122 from coming into contact and affecting the normal conductivity.

[0064] See also Figure 5 and Figure 7 At least two third positioning protrusions 113 are provided on the base 11, forming a second positioning groove, in which the grounding terminal 16 is positioned. The third positioning protrusions 113 improve the firmness of fixing the grounding terminal 16. In this embodiment, two third positioning protrusions 113 are provided.

[0065] Specifically, such as Figure 5 and Figure 8 As shown, the side of the grounding terminal 16 is provided with a first flange 163, and a third through hole 164 is provided on the first flange 163. One end of the grounding wire 15 passes through the third through hole 164 and is bent to form a hook, so as to achieve a firm connection between the grounding wire 15 and the grounding terminal 16.

[0066] Specifically, see [link to relevant documentation] Figure 5 and Figure 8 One end of the grounding terminal 16 has a fourth through hole 161, and one end of the second conductive post 14 is inserted into the fourth through hole 161 to achieve an electrical connection between the second conductive post 14 and the grounding terminal 16. In this embodiment, the other end of the grounding terminal 16 is positioned in the second positioning groove formed by two third positioning protrusions 113, ensuring the firmness of the connection between the grounding terminal 16 and the base 11.

[0067] Specifically, the filter provided in this embodiment also includes a housing 9, with the PCB board 2, socket 1, and capacitor all housed within the housing 9, serving to protect the internal structure. For example... Figure 7 As shown, a second flange 162 is provided at the end of the grounding terminal 16 away from the fourth through hole 161. The second flange 162 is inserted into the housing 9 to improve the firmness of fixing the grounding terminal 16.

[0068] like Figure 5 As shown, the filter also includes an X capacitor 3, a first Y capacitor 4, a second Y capacitor 5, a third Y capacitor 6, a fourth Y capacitor 7, and a common-mode inductor 8, all connected to the PCB board 2. The X capacitor 3, the first Y capacitor 4, the second Y capacitor 5, the third Y capacitor 6, the fourth Y capacitor 7, and the common-mode inductor 8 are all disposed within the housing 9.

[0069] Specifically, such as Figure 1 , Figure 4 and Figure 9As shown, the outer casing 9 includes a middle casing 91, a rear casing 92, and a front cover 93. The middle casing 91 is connected to one end of the base 11 facing the PCB board 2. The rear casing 92 and the front cover 93 are respectively connected to the two sides of the middle casing 91. The rear casing 92 is disposed outside the PCB board 2, the X capacitor 3, the third Y capacitor 6, the fourth Y capacitor 7, and the common mode inductor 8. The front cover 93 is disposed outside the socket 1, the first Y capacitor 4, and the second Y capacitor 5.

[0070] More specifically, such as Figure 1 As shown, the middle shell 91 has a square frame structure. The middle shell 91 is fitted outside the PCB board 2 and connected to the end face of the base 11 facing the PCB board 2. The square frame structure ensures the firmness of the connection with the base 11.

[0071] More specifically, the middle shell 91 includes a main frame, a front connecting edge 912, and a rear connecting edge 911. The front connecting edge 912 is angled to the outer edge of the main frame, and the rear connecting edge 911 is angled to the inner edge of the main frame. The front connecting edge 912 and the rear connecting edge 911 are respectively disposed on both sides of the main frame. The front connecting edge 912 is connected to the inner wall of the front cover 93, and the rear connecting edge 911 is connected to the inner wall of the rear shell 92. In this embodiment, four front connecting edges 912 are provided, each connected to one of the four outer edges of the main frame and one of the four inner walls of the front cover 93; four rear connecting edges 911 are provided, each connected to one of the four inner edges of the main frame and one of the four inner walls of the rear shell 92.

[0072] In this embodiment, as Figure 10 As shown, a groove 9121 is provided on a front connecting edge 912 of the middle housing 91, and the second flange 162 of the grounding terminal 16 is inserted into the slot formed by the groove 9121 and the inner wall of the front cover 93.

[0073] Specifically, such as Figure 1 As shown, the outer casing 9 also includes an insulating sleeve 95, which is fitted over the PCB board 2, X capacitor 3, third Y capacitor 6, fourth Y capacitor 7, and common mode inductor 8, serving an insulating function. The rear casing 92 and the middle casing 91 are fitted over the insulating sleeve 95.

[0074] More specifically, the top of the recess 111 is covered with an insulating protective plate 94. That is, as... Figure 1 As shown, an insulating protective plate 94 is provided on the outer side of the first Y capacitor 4 and the second Y capacitor 5, which serves to insulate and protect the first Y capacitor 4 and the second Y capacitor 5. The front cover 93 is fitted onto the outer side of the insulating protective plate 94, and the insulating sleeve 95 is pressed against the edge of the insulating protective plate 94.

[0075] like Figure 4 and Figure 9As shown, a through groove 931 is provided at the end of the front cover 93, and the head of the base 11 protrudes from the front cover 93 through the through groove 931. A gasket 96 is sandwiched between the inner wall of the through groove 931 and the outer wall of the base 11 to ensure the firm connection between the front cover 93 and the base 11. In this embodiment, three gaskets 96 are provided.

[0076] Specifically, such as Figure 4 and Figure 5 As shown, the PCB board 2 is also connected to a live wire lead 10 and a neutral wire lead 20. One end of the live wire lead 10 and the neutral wire lead 20 are respectively connected to the live wire output section and the neutral wire output section of the PCB board 2, and the other end is wrapped around each other to form a lead 30. The lead 30 passes through the tail of the rear housing 92 and is connected to a connector 40 at the end.

[0077] Specifically, the ends of X capacitor 3, first Y capacitor 4, second Y capacitor 5, third Y capacitor 6, fourth Y capacitor 7, common mode inductor 8, live wire lead 10, neutral wire lead 20, and ground wire 15 are all plugged into PCB board 2 and connected by wave soldering. This ensures a strong connection and improves manufacturing efficiency.

[0078] Specifically, Figure 11 In the diagram, CY1, CY2, CY3, CY4, CX1, and L1 represent the first Y capacitor 4, the second Y capacitor 5, the third Y capacitor 6, the fourth Y capacitor 7, the X capacitor 3, and the common-mode inductor 8, respectively. The X capacitor 3 is connected in parallel to the input terminal of the common-mode inductor 8. The series branch formed by the first Y capacitor 4 and the second Y capacitor 5 is connected in parallel with the X capacitor 3. A ground wire is provided between the first Y capacitor 4 and the second Y capacitor 5. The series branch formed by the third Y capacitor 6 and the fourth Y capacitor 7 is connected in parallel to the output terminal of the common-mode inductor 8. A ground wire is provided between the third Y capacitor 6 and the fourth Y capacitor 7.

[0079] Figure 11 The filter circuit composed of CY1 and CY2 can suppress common-mode interference signals on the power line; the filter circuit composed of CX1, L1, CY3 and CY4 can suppress electromagnetic noise and spurious signals of the input power supply, preventing interference to the power supply, and also suppressing high-frequency noise generated by the power supply itself. In this embodiment, CY1, CY2, CY3 and CY4 are all ceramic capacitors with a capacitance of 2.2nF, and CX1 is a thin-film capacitor with a capacitance of 0.1nF.

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A filter, characterized in that, include: The socket (1) includes a base (11), a positioning component (12) and two first conductive posts (13), the two first conductive posts (13) are spaced apart from each other and pass through the base (11), and the positioning component (12) is disposed on the base (11); PCB board (2) is positioned on the positioning component (12). One end of the first conductive post (13) is electrically connected to the PCB board (2), and the other end is a docking end (131). The docking end (131) is used to electrically connect to the docking device. The PCB board (2) has an integrated filter circuit. The positioning component (12) includes two first positioning protrusions (121) and two socket terminals (122). The first positioning protrusions (121) are connected to the base (11). The two first positioning protrusions (121) and the two socket terminals (122) are arranged in a one-to-one correspondence. One end of each first positioning protrusion (121) and its corresponding socket terminal (122) abuts against the opposite sides of the PCB board (2). The other end of each socket terminal (122) is electrically connected to a first conductive post (13). One end of the socket terminal (122) is provided with a folding part (1221), the folding part (1221) abuts against the side wall of the PCB board (2) away from the first positioning protrusion (121), and the other end of the socket terminal (122) is provided with a first through hole (1222), and one end of the first conductive post (13) passes through the first through hole (1222).

2. The filter according to claim 1, characterized in that, The positioning component (12) further includes two limiting blocks (123), which are connected to the base (11). The two limiting blocks (123) and the two first positioning protrusions (121) are arranged in a one-to-one correspondence. Each limiting block (123) and its corresponding first positioning protrusion (121) form a first positioning groove, and each socket terminal (122) is positioned in one of the first positioning grooves.

3. The filter according to claim 1, characterized in that, The filter also includes two capacitors. A second through hole (1223) is provided on the folded part (1221). The capacitor is disposed on the substrate (11). One end of each capacitor passes through a second through hole (1223) and is inserted into the PCB board (2), and the other end is inserted into the PCB board (2).

4. The filter according to claim 3, characterized in that, The substrate (11) has a recess (111) and both capacitors are disposed in the recess (111).

5. The filter according to claim 4, characterized in that, The top of the recess (111) is covered with an insulating protective plate (94).

6. The filter according to claim 1, characterized in that, The positioning component (12) further includes a plurality of second positioning protrusions (124), which are connected to the substrate (11) and abut against a side wall of the PCB board (2).

7. The filter according to claim 6, characterized in that, Each of the second positioning protrusions (124) has a protruding locking block (125), and the end of the PCB board (2) has several slots (21), and the several locking blocks (125) are locked into the several slots (21) in a corresponding manner.

8. The filter according to claim 1, characterized in that, The socket (1) further includes a second conductive post (14), a grounding wire (15) and a grounding terminal (16). The second conductive post (14) passes through the base (11). The second conductive post (14) and the two first conductive posts (13) are respectively arranged at the three corners of a triangle. One end of the second conductive post (14) is inserted into the grounding terminal (16), and the other end is used to electrically connect to the docking device. One end of the grounding wire (15) is connected to the grounding terminal (16), and the other end is inserted into the PCB board (2).

9. The filter according to claim 8, characterized in that, The side of the grounding terminal (16) is provided with a first flange (163), and a third through hole (164) is provided on the first flange (163). One end of the grounding wire (15) passes through the third through hole (164) and is bent to form a hook.

10. The filter according to claim 8, characterized in that, The filter also includes a housing (9), which is fitted over the socket (1) and the PCB board (2). The grounding terminal (16) has a second flange (162) at the end opposite to the second conductive post (14), and the second flange (162) is inserted into the housing (9).

11. The filter according to claim 8, characterized in that, A blocking part (112) is provided on the substrate (11), and the blocking part (112) blocks the grounding terminal (16) and the socket terminal (122).

12. The filter according to claim 8, characterized in that, At least two third positioning protrusions (113) are provided on the substrate (11), and the at least two third positioning protrusions (113) form a second positioning groove, and the grounding terminal (16) is positioned in the second positioning groove.

13. The filter according to any one of claims 1-12, characterized in that, The filter also includes a housing (9), which includes a middle housing (91), a rear housing (92) and a front cover (93). The middle housing (91) is connected to one end of the base (11) facing the PCB board (2). The rear housing (92) and the front cover (93) are respectively connected to the two sides of the middle housing (91). The rear housing (92) is fitted on the outside of the PCB board (2), and the front cover (93) is fitted on the outside of the socket (1).

14. The filter according to claim 13, characterized in that, The middle shell (91) is a square frame structure. The middle shell (91) is sleeved on the outside of the PCB board (2) and connected to the end face of the base (11) facing the PCB board (2).

15. The filter according to claim 14, characterized in that, The middle shell (91) includes a main frame, a front connecting edge (912) and a rear connecting edge (911). The front connecting edge (912) is connected at an angle to the outer edge of the main frame, and the rear connecting edge (911) is connected at an angle to the inner edge of the main frame. The front connecting edge (912) and the rear connecting edge (911) are respectively located on both sides of the main frame. The front connecting edge (912) is connected to the inner wall of the front cover (93), and the rear connecting edge (911) is connected to the inner wall of the rear shell (92).

16. The filter according to claim 13, characterized in that, The outer shell (9) also includes an insulating sleeve (95), which is fitted over the PCB board (2), and the middle shell (91) and the rear shell (92) are fitted over the insulating sleeve (95).

17. The filter according to claim 13, characterized in that, The front cover (93) has a through groove (931) at its end. The head of the base (11) passes through the through groove (931) from inside the front cover (93). A gasket (96) is sandwiched between the inner wall of the through groove (931) and the outer wall of the base (11).

18. The filter according to any one of claims 1-12, characterized in that, The filter also includes an X capacitor (3), a first Y capacitor (4), a second Y capacitor (5), a third Y capacitor (6), a fourth Y capacitor (7), and a common-mode inductor (8), all connected to the PCB board (2). The X capacitor (3) is connected in parallel to the input terminal of the common-mode inductor (8). The series branch formed by the first Y capacitor (4) and the second Y capacitor (5) is connected in parallel with the X capacitor (3). A ground wire is provided between the first Y capacitor (4) and the second Y capacitor (5). The series branch formed by the third Y capacitor (6) and the fourth Y capacitor (7) is connected in parallel to the output terminal of the common-mode inductor (8). A ground wire is provided between the third Y capacitor (6) and the fourth Y capacitor (7).

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