CN222465151U - Anti-electromagnetic interference band-pass filter - Google Patents
Anti-electromagnetic interference band-pass filter Download PDFInfo
- Publication number
- CN222465151U CN222465151U CN202420938387.4U CN202420938387U CN222465151U CN 222465151 U CN222465151 U CN 222465151U CN 202420938387 U CN202420938387 U CN 202420938387U CN 222465151 U CN222465151 U CN 222465151U
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- Prior art keywords
- filter body
- filter
- electromagnetic interference
- protective cover
- pass filter
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- 230000001681 protective effect Effects 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000741 silica gel Substances 0.000 claims description 16
- 229910002027 silica gel Inorganic materials 0.000 claims description 16
- 230000005855 radiation Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
本实用新型公开了一种抗电磁干扰的带通滤波器，涉及带通滤波器技术领域，解决了现有滤波器由于本身仅仅靠自身外壳来进行防护，防护效果不佳，易受到外力碰撞而变形损坏，易损坏到滤波器的内部元件，且其整体的散热效果较差的技术问题；包括滤波器本体与设置在滤波器本体两侧的输入端口及输出端口；还包括：金属防护罩，金属防护罩的内壁设置有安装槽，滤波器本体设置于安装槽内，金属防护罩的外壁面包裹有一层橡胶防护套，橡胶防护套上设置有数个凸杆；本实用新型能够在实现对滤波器本体的内部元件进行高效保护，让滤波器本体不易因外力碰撞而变形损坏同时实现散热，可避免滤波器本体温度过高发生损坏，从而延长了滤波器本体的使用寿命。
The utility model discloses an electromagnetic interference resistant bandpass filter, relates to the technical field of bandpass filters, and solves the technical problems that the existing filter only relies on its own shell for protection, has poor protection effect, is easily deformed and damaged by external force collision, is easily damaged to the internal components of the filter, and has poor overall heat dissipation effect; it comprises a filter body and an input port and an output port arranged on both sides of the filter body; it also comprises: a metal protective cover, the inner wall of the metal protective cover is provided with an installation groove, the filter body is arranged in the installation groove, the outer wall surface of the metal protective cover is wrapped with a layer of rubber protective sleeve, and a plurality of convex rods are arranged on the rubber protective sleeve; the utility model can realize efficient protection of the internal components of the filter body, make the filter body not easily deformed and damaged by external force collision, and realize heat dissipation at the same time, and can avoid the filter body from being damaged due to excessive temperature, thereby extending the service life of the filter body.
Description
Technical Field
The utility model belongs to the technical field of band-pass filters, and particularly relates to an anti-electromagnetic interference band-pass filter.
Background
In the power electronics industry and the communication industry, in order to ensure smooth power supply and communication lines, in the process of designing power and communication equipment, high-strength transient interference such as strong electromagnetic interference and thunder must be considered to damage the equipment while normal power grid fluctuation and signal interference are considered. Various types of filters are widely used in the prior art, such as power filters and signal filters, by which the power grid can be cleaned and unwanted noise and interference in the signal can be filtered. The power supply filter, which is also called as a power supply EM I filter or an EM I power supply filter, is a passive bidirectional network, is an electric device for effectively filtering frequency points of specific frequencies or frequencies outside the frequency points in a power supply, and one end of the power supply filter is connected with the power supply, and the other end of the power supply filter is connected with a load.
At present, in the use process of matched equipment, the existing filter is poor in protection effect because the filter is protected only by the shell of the filter, is easy to deform and damage due to collision of external force, is easy to damage the internal elements of the filter, and has poor overall heat dissipation effect.
Therefore, based on the above problems, we have devised a bandpass filter resistant to electromagnetic interference.
Disclosure of utility model
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides an anti-electromagnetic interference band-pass filter, which solves the technical problems that the existing filter is protected only by a shell, the protection effect is poor, the filter is easy to deform and damage due to collision of external force, the internal elements of the filter are easy to damage, and the whole radiating effect is poor.
To achieve the above object, an embodiment of the present utility model provides an electromagnetic interference resistant band-pass filter, including a filter body, and an input port and an output port disposed on two sides of the filter body;
the filter comprises a filter body, a metal protective cover, a plurality of convex rods, a plurality of rubber protective sleeves and a metal protective cover, wherein the inner wall of the metal protective cover is provided with a mounting groove, the filter body is arranged in the mounting groove, the outer wall surface of the metal protective cover is wrapped with the rubber protective sleeve, and the rubber protective sleeve is provided with the convex rods;
The heat radiation structure comprises heat radiation fins embedded in the bottom surface of the metal protective cover and heat conduction silica gel arranged on the inner wall of the mounting groove.
The filter comprises a filter body, wherein the four corners of the filter body are respectively provided with a mounting lug, the mounting lugs are respectively sleeved on the mounting posts, and the mounting posts are respectively connected with a fastening sleeve through threads.
The metal protective cover is further improved in that an overhaul notch is formed in the surface of the metal protective cover, and a circle of silica gel strips are arranged on the inner wall of the overhaul notch.
The maintenance gap is internally provided with an maintenance cover plate, four corners of the maintenance cover plate are provided with fixing screws, the bottom surface of the maintenance cover plate is provided with a fixing clamp ring, the fixing clamp ring of the maintenance cover plate is clamped in the maintenance gap during installation, the outer wall of the fixing clamp ring is contacted with a silica gel strip, the waterproof performance is improved, the maintenance cover plate is installed in the maintenance gap by the aid of the fixing screws, and convenient disassembly and assembly are achieved.
The improved structure is characterized in that a layer of rubber protection pad is arranged on the surface of the overhaul cover plate, a plurality of convex rods are arranged on the rubber protection pad, and the rubber protection sleeve is used for protecting the filter body in the metal protection cover.
The metal protective cover is further improved in that bayonets for installing an input port and an output port are arranged on two sides of the metal protective cover in a penetrating mode.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, the filter body is clamped in the mounting groove, so that each mounting lug is sleeved on the positioning column respectively, and then each fastening sleeve is sleeved on the positioning column through threads, so that the filter body can be conveniently and rapidly disassembled;
(2) According to the utility model, the fixed clamping ring of the overhaul cover plate is clamped in the overhaul notch, the outer wall of the fixed clamping ring is contacted with the silica gel strip, so that the waterproof performance is improved, and the overhaul cover plate is installed in the overhaul notch by using the fixed screw, so that the overhaul cover plate is disassembled and assembled;
(3) According to the utility model, the heat of the filter body is led out by utilizing the effects of the rubber protective sleeve, the rubber protective pad, the heat conducting silica gel and the radiating fins, so that the internal elements of the filter body can be efficiently protected, the filter body is not easy to deform and damage due to external force collision, and meanwhile, the heat dissipation is realized, the damage to the filter body caused by overhigh temperature can be avoided, and the service life of the filter body is prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional top view of the present utility model;
fig. 3 is a schematic cross-sectional elevation of the present utility model.
The marks in the figure:
1. The filter comprises a filter body, an input port, a 12, an output port, a 13, a mounting lug, 2, a metal protective cover, 21, an overhaul cover plate, 211, an overhaul gap, 212, a silica gel strip, 213, a fixing clamp ring, 214, a rubber protective pad, 22, a mounting groove, 221, a positioning column, 222, a fastening sleeve, 23, a rubber protective sleeve, 3, a heat dissipation structure, 31, heat dissipation fins, 32 and heat conduction silica gel.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, an anti-electromagnetic interference band-pass filter comprises a filter body 1, and an input port 11 and an output port 12 arranged at two sides of the filter body 1;
Wherein, the two sides of the metal protective cover 2 are provided with bayonets for installing the input port 11 and the output port 12 in a penetrating way, and the bayonets are used for installing the input port 11 and the output port 12;
As shown in fig. 2 and 3, the implementation comprises a metal protective cover 2, wherein an installation groove 22 is formed in the inner wall of the metal protective cover 2, a filter body 1 is arranged in the installation groove 22, a layer of rubber protective sleeve 23 is wrapped on the outer wall surface of the metal protective cover 2, and a plurality of convex rods are arranged on the rubber protective sleeve 23;
The surface of the access cover plate 21 is provided with a layer of rubber protection pad 214, a plurality of convex rods are arranged on the rubber protection pad 214, and the rubber protection pad 214 is used for protecting the filter body 1 in the metal protection cover 2;
In implementation, positioning columns 221 are further arranged at four corners of the mounting groove 22, external threads are arranged on the outer wall surface of each positioning column 221, mounting lugs 13 are arranged at four corners of the filter body 1, each mounting lug 13 is sleeved on each positioning column 221, each positioning column 221 is connected with a fastening sleeve 222 in a threaded manner, each mounting lug 13 is sleeved on each positioning column 221 by clamping the filter body 1 in the mounting groove 22, and then each fastening sleeve 222 is sleeved on each positioning column 221 in a threaded manner, so that the filter body 1 can be conveniently and quickly assembled and disassembled;
When the metal protective cover is used, the surface of the metal protective cover 2 is provided with an overhaul notch 211, the inner wall of the overhaul notch 211 is provided with a circle of silica gel strips 212, the overhaul notch 211 is internally provided with an overhaul cover plate 21, four corners of the overhaul cover plate 21 are provided with fixing screws, the bottom surface of the overhaul cover plate 21 is provided with a fixing clamp ring 213, during installation, the fixing clamp ring 213 of the overhaul cover plate 21 is clamped in the overhaul notch 211, the outer wall of the fixing clamp ring 213 is contacted with the silica gel strips 212, the waterproof performance is improved, and the overhaul cover plate 21 is installed in the overhaul notch 211 by using the fixing screws, so that convenient disassembly and assembly are realized;
As shown in fig. 3, the filter further comprises a heat dissipation structure 3, wherein the heat dissipation structure 3 comprises heat dissipation fins 31 embedded in the bottom surface of the metal protective cover 2 and heat conduction silica gel 32 arranged on the inner wall of the mounting groove 22, the heat conduction silica gel 32 and the heat dissipation fins 31 are used for guiding out heat of the filter body 1, heat dissipation is realized while protection is not damaged, and damage to the filter body 1 caused by overhigh temperature can be avoided.
As shown in fig. 1 to 3, in this embodiment, it should be further noted that, when the application is implemented, an anti-electromagnetic interference band-pass filter is selected, wherein, regarding the working principle and the product description of the filter body 1, reference is made to the commercial products in the prior art. The application aims at solving the problems that the existing filter is only protected by a shell, has poor protection effect, is easy to deform and damage due to collision of external force, is easy to damage the internal element of the filter, and has poor overall heat dissipation effect, and only relates to the external protection problem, and does not relate to other aspects in the element, and the working principle of the band-pass filter for resisting electromagnetic interference is introduced as follows:
During installation, an operator firstly clamps the filter body 1 in the installation groove 22, and makes the input port 11 and the output port 12 pass through bayonets on two sides of the metal protection cover 2, so that each installation lug 13 is respectively sleeved on the positioning column 221, at the moment, the bottom surface of the filter body 1 is propped against the heat-conducting silica gel 32, and then the threads on each fastening sleeve 222 are sleeved on the positioning column 221, so that the filter body 1 can be conveniently and rapidly assembled and disassembled;
Then, the fixed clamping ring 213 of the overhaul cover plate 21 is clamped in the overhaul notch 211, the outer wall of the fixed clamping ring 213 and the silica gel strip 212 are in contact with each other, the waterproof performance is improved, and the overhaul cover plate 21 is installed in the overhaul notch 211 by using the fixed screw, so that the overhaul cover plate 21 is dismounted;
When the filter body 1 is used, the heat of the filter body 1 is led out by utilizing the functions of the rubber protective sleeve 23, the rubber protective pad 214, the heat conducting silica gel 32 and the radiating fins 31, so that the internal elements of the filter body 1 can be efficiently protected, the filter body 1 is not easy to deform and damage due to external force collision, and meanwhile, heat dissipation is realized, the filter body 1 is prevented from being damaged due to overhigh temperature, and the service life of the filter body 1 is prolonged.
The above embodiments are only for illustrating the technical method of the present utility model and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present utility model may be modified or substituted without departing from the spirit and scope of the technical method of the present utility model.
Claims (6)
1. An anti-electromagnetic interference band-pass filter comprises a filter body (1), and an input port (11) and an output port (12) which are arranged on two sides of the filter body (1);
characterized by further comprising:
The filter comprises a metal protective cover (2), wherein an installation groove (22) is formed in the inner wall of the metal protective cover (2), the filter body (1) is arranged in the installation groove (22), a layer of rubber protective sleeve (23) is wrapped on the outer wall surface of the metal protective cover (2), and a plurality of protruding rods are arranged on the rubber protective sleeve (23);
The heat radiation structure (3), heat radiation structure (3) include embedded radiating fin (31) in metal protection casing (2) bottom surface and set up heat conduction silica gel (32) at mounting groove (22) inner wall.
2. The anti-electromagnetic interference band-pass filter according to claim 1, wherein positioning columns (221) are arranged at four corners of the mounting groove (22), external threads are arranged on the outer wall surface of each positioning column (221), mounting lugs (13) are arranged at four corners of the filter body (1), each mounting lug (13) is sleeved on each positioning column (221), and a fastening sleeve (222) is connected to each positioning column (221) in a threaded mode.
3. The anti-electromagnetic interference band-pass filter according to claim 1, wherein an overhaul notch (211) is formed in the surface of the metal shield (2), and a circle of silica gel strips (212) are arranged on the inner wall of the overhaul notch (211).
4. A bandpass filter with electromagnetic interference resistance according to claim 3, characterized in that an access cover plate (21) is arranged in the access notch (211), fixing screws are arranged at four corners of the access cover plate (21), and a fixing snap ring (213) is arranged at the bottom surface of the access cover plate (21).
5. The electromagnetic interference resistant band-pass filter according to claim 4, wherein a rubber protection pad (214) is arranged on the surface of the access cover plate (21), and a plurality of protruding rods are arranged on the rubber protection pad (214).
6. The anti-electromagnetic interference band-pass filter according to claim 1, wherein bayonets for installing the input port (11) and the output port (12) are arranged on two sides of the metal shield (2) in a penetrating manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420938387.4U CN222465151U (en) | 2024-04-30 | 2024-04-30 | Anti-electromagnetic interference band-pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420938387.4U CN222465151U (en) | 2024-04-30 | 2024-04-30 | Anti-electromagnetic interference band-pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222465151U true CN222465151U (en) | 2025-02-11 |
Family
ID=94443856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420938387.4U Active CN222465151U (en) | 2024-04-30 | 2024-04-30 | Anti-electromagnetic interference band-pass filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222465151U (en) |
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2024
- 2024-04-30 CN CN202420938387.4U patent/CN222465151U/en active Active
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