Multi-channel filter with shielding function

Abstract

The utility model discloses a multi-channel filter with a shielding function. The multi-channel filter comprises an insulating body, a connecting terminal, a filtering assembly and a shielding piece, the plurality of filtering assemblies are transversely arranged at intervals, each filtering assembly is arranged in the corresponding mounting cavity, and the filtering assemblies are matched with the shielding parts to be arranged in the insulating body and located between the two adjacent mounting cavities, so that the filtering assemblies between different channels perform signal shielding through the shielding parts; therefore, signal crosstalk between the adjacent filtering assemblies is prevented, the distance between the adjacent filtering assemblies does not need to be increased, the overall size of the filter is reduced, meanwhile, filters of different channels do not need to be placed on the two sides of a mainboard respectively, the installation space of the mainboard occupied by the filters is reduced, and the installation efficiency is improved. And the requirement of product miniaturization can be met.

Description

Technical Field

[0001] The utility model relates to the field of filter technology, in particular to a multi-channel filter with a shielding function. Background Art

[0002] A filter is a frequency-selective device that allows specific frequency components in a signal to pass while significantly attenuating other frequency components. This frequency-selective function can be used to filter out interference noise or perform spectrum analysis. Any device or system that allows specific frequency components in a signal to pass while significantly attenuating or suppressing other frequency components is called a filter. A filter is a device that filters waves. Filtering is a key concept in signal processing. In a DC regulated power supply, the function of the filter circuit is to minimize the AC component of the pulsating DC voltage while retaining the DC component, thereby reducing the output voltage ripple factor and creating a smoother waveform.

[0003] The function of the existing filter is to transmit network signals. The signals are transmitted to the filter through the mainboard, and the signals are optimized by the filter and then transmitted out. When using a multi-channel network filter, signal interference will occur between the filter components of different channels. In order to reduce the signal interference between them, the existing methods are mostly to increase the spacing between adjacent channels or place filters of different channels on both sides of the mainboard. These two methods will not only increase the overall size of the filter and fail to meet the product requirements of miniaturization of the filter, but also take up more space on the mainboard; therefore, it is necessary to make further improvements to the existing filter structure. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies in the prior art, and its main purpose is to provide a multi-channel filter with a shielding function, which can effectively solve the problems of the existing filters being large in size, unable to meet product requirements, and occupying a large amount of motherboard space.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A multi-channel filter with a shielding function comprises an insulating body, connecting terminals, a filter assembly, and a shielding member; the insulating body is provided with mounting cavities arranged laterally at intervals, and there are at least two mounting cavities; the connecting terminals are embedded in the insulating body, and there are multiple connecting terminals, each mounting cavity corresponding to two groups of connecting terminals arranged at intervals; the filter assemblies are multiple and arranged laterally at intervals, each filter assembly is arranged in a corresponding mounting cavity and is respectively connected and conducted with the corresponding two groups of connecting terminals; there is at least one shielding member, which is arranged in the insulating body and located between two adjacent mounting cavities.

[0007] As a preferred solution, a mounting groove is provided on the insulating body, and there is at least one mounting groove, and the mounting groove is located between two adjacent mounting cavities; the shielding member is arranged in the mounting groove.

[0008] As a preferred solution, the left and right side walls of the installation groove are respectively provided with symmetrically arranged clamping parts protruding outward, and the front end of the clamping part is provided with a first guide surface connected to the side wall of the installation groove; the left and right side walls at the rear end of the shielding part are provided with a second guide surface that cooperates with the first guide surface.

[0009] As a preferred solution, the upper and lower side walls of the shielding member are respectively provided with extrusion parts that cooperate with the upper and lower side walls of the mounting slot. The extrusion parts are arranged at an angle, and the height of the end of the extrusion part away from the mounting slot opening is smaller than the height of the end of the extrusion part close to the mounting slot opening.

[0010] As a preferred solution, both ends of the connecting terminal extend outward from the insulating body and are respectively formed with a connecting end and a welding end, and the filter assembly is connected and conductively connected to the connecting end of the connecting terminal.

[0011] As a preferred solution, the welding end is integrally bent to form a welding foot, and a flat welding surface is formed on the welding foot.

[0012] As a preferred solution, the filter assembly includes a plurality of electromagnetic coil groups arranged at intervals, each electromagnetic coil group includes two electromagnetic coils arranged at intervals, and each electromagnetic coil is in contact and conductive with a corresponding connection terminal.

[0013] As a preferred solution, a grounding terminal is provided on the insulating body, and the shielding member is in contact and conductive with the grounding terminal.

[0014] As a preferred solution, the shielding member is a metal shielding sheet.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0016] By arranging a plurality of filter components in a transversely spaced manner, each filter component is arranged in a corresponding installation cavity, and a shielding member is arranged in the insulating body and located between two adjacent installation cavities, so that the filter components between different channels can shield the signals through the shielding member, thereby preventing signal crosstalk between adjacent filter components. There is no need to increase the distance between adjacent filter components, reducing the overall size of the filter. At the same time, there is no need to place filters of different channels on both sides of the mainboard respectively, reducing the installation space of the mainboard occupied by the filter, so that it can meet the needs of product miniaturization.

[0017] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the preferred embodiment of the present utility model in use;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of a preferred embodiment of the present utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of a preferred embodiment of the present utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the shielding member in the preferred embodiment of the present utility model.

[0022] Description of the accompanying drawings:

[0023] 10. Insulation body 101, installation cavity

[0024] 102, mounting groove 11, clamping portion

[0025] 12. First guide surface 13. Ground terminal

[0026] 20. Connecting terminal 21. Connecting terminal group

[0027] 22. Connection end 23. Welding end

[0028] 231, welding foot 232, welding surface

[0029] 30. Filter assembly 31. Electromagnetic coil assembly

[0030] 32. Electromagnetic coil 40. Shielding element

[0031] 41. Second guide surface 42. Extrusion portion

[0032] 50. Motherboard. DETAILED DESCRIPTION

[0033] Please refer to Figures 1 to 4 , which shows the specific structure of a preferred embodiment of the present invention, including an insulating body 10 , a connecting terminal 20 , a filter assembly 30 and a shielding member 40 .

[0034] The insulating body 10 defines at least two laterally spaced mounting cavities 101. In this embodiment, the insulating body 10 defines at least one mounting slot 102, located between two adjacent mounting cavities 101. Symmetrically arranged clamping portions 11 protrude outward from the left and right side walls of the mounting slots 102. During installation of the shielding element 40, the two clamping portions 11 securely clamp the shielding element 40 within the mounting slots 102. A first guide surface 12 is provided at the front end of the clamping portions 11, communicating with the side walls of the mounting slots 102. A grounding terminal 13 is provided on the insulating body 10.

[0035] The connecting terminal 20 is embedded in the insulating body 10. Multiple connecting terminals 20 are provided, with two spaced-apart connecting terminal groups 21 corresponding to each mounting cavity 101. In this embodiment, the two ends of the connecting terminal 20 extend outward from the insulating body 10 and are respectively formed with a connecting end 22 and a welding end 23. The welding end 23 is integrally bent to form a welding foot 231, which is formed with a flat welding surface 232, thereby facilitating the welding process between the welding end 22 and the external motherboard 50.

[0036] The filter assemblies 30 are arranged in a plurality of spaced-apart configurations, each of which is disposed in a corresponding mounting cavity 101 and electrically connected to the corresponding two connection terminal groups 21. In this embodiment, the filter assemblies 30 are electrically connected to the connection ends 22 of the connection terminals 20. The filter assemblies 30 include a plurality of spaced-apart electromagnetic coil assemblies 31, each of which includes two spaced-apart electromagnetic coils 32, each of which is electrically connected to a corresponding connection terminal 20.

[0037] The shielding member 40 is provided as at least one, and is provided in the insulating body 10 and located between two adjacent mounting cavities 101. The number of the shielding members 40 corresponds to the number of the filter assemblies 30, thereby ensuring that the signals between two adjacent filter assemblies 30 are shielded by a shielding member 40, thereby achieving the function of preventing crosstalk. In this embodiment, the shielding member 40 is provided in the mounting groove 102. In other embodiments, the shielding member 40 can also be embedded in the insulating body 10 by injection molding. The left and right side walls of the rear end of the shielding member 40 are provided with second guide surfaces 41 that cooperate with the first guide surface 12. The cooperation between the second guide surface 41 and the first guide surface 12 guides the installation process of the shielding member 40, making the installation process of the shielding member 40 more convenient. The upper and lower side walls of the shielding member 40 are respectively provided with extrusion portions 42 that cooperate with the upper and lower side walls of the mounting slot 102. The extrusion portions 42 are inclined, and the height of the end of the extrusion portion 42 away from the opening of the mounting slot 102 is less than the height of the end of the extrusion portion 42 close to the opening of the mounting slot 102. During installation, the position of the shielding member 40 can be further fixed by the gradual squeezing process between the extrusion portion 42 and the upper and lower side walls of the mounting slot 102. The shielding member 40 is in contact with and conductive to the grounding terminal 13, thereby achieving the grounding process of the shielding member 40. Similarly, the shielding member 40 can also be selected not to be connected to the grounding terminal 13 according to actual needs. The shielding member 40 is a metal shielding sheet. Similarly, the shielding member 40 can also be other components that can achieve a signal shielding effect, without limitation.

[0038] The design focus of the present invention is that: a plurality of filter components are arranged in a transversely spaced arrangement, each filter component is arranged in a corresponding installation cavity, and a shielding member is arranged in the insulating body and located between two adjacent installation cavities, so that the filter components between different channels can shield the signals through the shielding member, thereby preventing signal crosstalk between adjacent filter components, and there is no need to increase the distance between adjacent filter components, reducing the overall size of the filter. At the same time, there is no need to place filters of different channels on both sides of the mainboard respectively, reducing the installation space of the mainboard occupied by the filter, so that it can meet the needs of product miniaturization.

[0039] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A multi-channel filter with shielding function, characterized in that: It includes an insulating body, a connecting terminal, a filter assembly and a shielding member; the insulating body is provided with installation cavities arranged in a transverse space, and there are at least two installation cavities; the connecting terminal is embedded in the insulating body, and there are multiple connection terminals, and each installation cavity is corresponding to two spaced connection terminal groups; the filter assembly is arranged in a plurality of transverse spaced arrangements, each filter assembly is arranged in a corresponding installation cavity and is respectively connected to the corresponding two connection terminal groups; there is at least one shielding member, which is arranged in the insulating body and located between two adjacent installation cavities.

2. The multi-channel filter with shielding function according to claim 1, characterized in that: The insulating body is provided with a mounting groove, and there is at least one mounting groove. The mounting groove is located between two adjacent mounting cavities; the shielding component is arranged in the mounting groove.

3. The multi-channel filter with shielding function according to claim 2, characterized in that: The left and right side walls of the mounting groove are respectively provided with symmetrically arranged clamping parts protruding outward, and the front end of the clamping part is provided with a first guide surface connected to the side wall of the mounting groove; the left and right side walls of the rear end of the shielding component are provided with a second guide surface cooperating with the first guide surface.

4. The multi-channel filter with shielding function according to claim 2, characterized in that: The upper and lower side walls of the shielding member are respectively provided with extrusion parts that cooperate with the upper and lower side walls of the installation slot. The extrusion parts are arranged obliquely, and the height of the end of the extrusion part away from the installation slot opening is smaller than the height of the end of the extrusion part close to the installation slot opening.

5. The multi-channel filter with shielding function according to claim 1, characterized in that: Both ends of the connecting terminal extend outward from the insulating body and are respectively formed with a connecting end and a welding end. The filter assembly is connected and conductive with the connecting end of the connecting terminal.

6. The multi-channel filter with shielding function according to claim 5, characterized in that: The welding end is integrally bent to form a welding foot, and a flat welding surface is formed on the welding foot.

7. The multi-channel filter with shielding function according to claim 1, characterized in that: The filter assembly includes a plurality of electromagnetic coil groups arranged at intervals, each electromagnetic coil group includes two electromagnetic coils arranged at intervals, and each electromagnetic coil is in contact with and conductive to a corresponding connection terminal.

8. The multi-channel filter with shielding function according to claim 1, characterized in that: A grounding terminal is provided on the insulating body, and the shielding component is in contact and conductive with the grounding terminal.

9. The multi-channel filter with shielding function according to claim 1, characterized in that: The shielding element is a metal shielding sheet.

Images