CN214852572U - Filtering ventilation board with strong electromagnetic shielding capability - Google Patents
Filtering ventilation board with strong electromagnetic shielding capability Download PDFInfo
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- CN214852572U CN214852572U CN202121342211.5U CN202121342211U CN214852572U CN 214852572 U CN214852572 U CN 214852572U CN 202121342211 U CN202121342211 U CN 202121342211U CN 214852572 U CN214852572 U CN 214852572U
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Abstract
The utility model discloses a filtering ventilation board that electromagnetic shield ability is strong, including fixed frame, and locate first filtering board and second filtering board in the fixed frame in proper order, be equipped with a plurality of first honeycomb holes and second honeycomb holes on first filtering board and the second filtering board respectively, first honeycomb holes and the crisscross setting of second honeycomb holes, be equipped with the mounting groove on the fixed frame inside wall, fixed mounting has dustproof the pad in the mounting groove, dustproof the pad is located between first filtering board and the second filtering board. The utility model discloses an installation first filtering board and second filtering board improve the utility model discloses the electromagnetic shield efficiency of filtering ventilation board to through set up dustproof pad in the mounting groove, improved the utility model discloses a dustproof ability makes simultaneously dustproof pad installation back centre gripping between first filtering board and second filtering board, and the steadiness is good, can use in the anti vibration environment; and the filtering ventilation plate with the detachable structure is convenient to manufacture, maintain and clean.
Description
Technical Field
The utility model relates to a filtering ventilation board technical field that electromagnetic shield ability is strong especially relates to a filtering ventilation board that electromagnetic shield ability is strong.
Background
The waveguide ventilation window is used for shielding electromagnetic waves by utilizing the principle of waveguide high-pass filtering, namely the waveguide passes the electromagnetic waves above a cutoff frequency and attenuates the electromagnetic waves below the cutoff frequency, and the attenuation (shielding efficiency) is proportional to the length of the waveguide.
Along with the increasingly severe electromagnetic environment, electronic products need to work normally in a complex electromagnetic environment and meet increasingly strict electromagnetic compatibility standards, so that electromagnetic shielding of the electronic products is very important work, meanwhile, the electronic products generally need heat dissipation in the working process, and therefore, a vent needs to be arranged on an electromagnetic shielding body, and a filtering ventilation plate is arranged on the vent, so that the vent not only needs to meet the requirements of ventilation and heat dissipation, but also needs to prevent electromagnetic wave from spreading.
At present, a filtering ventilation plate in the prior art is generally an integrated single-layer waveguide plate structure, external electromagnetic waves are shielded only through a honeycomb vent on one layer of waveguide plate, the shielding effect is poor, and the integrated structure also increases the difficulty of manufacturing and maintaining; meanwhile, the existing panel directly clamps the dust cover on the stop waveguide plate, has poor stability and cannot be used in a vibration-resistant environment.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem in the prior art, the utility model provides a filtering ventilation board that electromagnetic shield ability is strong has outstanding electromagnetic shield ability, and is convenient for make and maintain, and the steadiness is good simultaneously, can use in the anti vibration environment.
The utility model provides a scheme that its technical problem took is: the utility model provides a filtering ventilation board that electromagnetic shield ability is strong, includes fixed frame, still includes first filtering board and the second filtering board of locating fixed frame in proper order from outer to interior, be equipped with a plurality of first honeycomb holes and second honeycomb holes on first filtering board and the second filtering board respectively, first honeycomb hole sets up with second honeycomb hole is crisscross.
Be equipped with the mounting groove on the fixed frame inside wall, fixed mounting has dustproof the pad in the mounting groove, dustproof the pad is located between first filtering board and the second filtering board.
Further, the staple frame cross-section is "Contraband" shape structure, includes two frame strips of splicing each other, two frame strip cross-section is "L" shape structure, and frame strip both ends concatenation punishment do not is equipped with connecting block and spread groove, the connecting block gomphosis is in the spread groove.
Furthermore, the four corners of the end face of the fixed frame are provided with fixed holes for installing and strengthening the connection strength of the frame strips, and the fixed holes penetrate through the connecting blocks and the connecting grooves.
Further, the first honeycomb holes are inclined towards the lower part of the outer side of the fixed frame, and the inclination angle is 0-90 degrees.
Furthermore, a shielding groove is further formed in the end face of the inner side of the fixed frame, and a shielding wire mesh used for shielding electromagnetic waves at a gap at the connecting position is embedded in the shielding groove.
Furthermore, a rubber sponge cushion is adhered to the periphery of the outer side of the shielding silk screen.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a first filtering board of installation and second filtering board in fixed frame to make the crisscross setting of first honeycomb holes and second honeycomb holes, improve the utility model discloses the electromagnetic shield efficiency of filtering ventilation board.
2. The utility model discloses a be equipped with the mounting groove on the fixed frame inside wall, through set up dustproof the pad in the mounting groove, improved the utility model discloses a dustproof ability to install dustproof pad through the mounting groove, make dustproof pad installation back centre gripping between first filtering board and second filtering board, compare with prior art, the steadiness is good, can use in the anti vibration environment.
3. The utility model discloses a filtering ventilation board is detachable construction, including fixed frame and the first filtering board and the second filtering board of gomphosis in fixed frame, compare with prior art, be convenient for preparation and maintenance, and convenient clearance.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a schematic structural view of another angle in the present embodiment;
FIG. 3 is an exploded view of the present embodiment;
fig. 4 is a sectional view of the present embodiment.
In the figure: 1. a fixed frame; 11. mounting grooves; 12. a frame bar; 121. connecting blocks; 122. connecting grooves; 13. a fixing hole; 14. a shielding groove; 2. a first filter plate; 21. a first honeycomb hole; 3. a second filter plate; 31. a second honeycomb hole; 4. a dust-proof pad; 5. a shielding wire mesh; 6. a rubber sponge cushion.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following description of the present invention is provided in connection with the accompanying drawings.
It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like as used herein are used in the orientation or positional relationship indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the present invention. "plurality" means two or more unless otherwise specified.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
With reference to fig. 1 to 3, a filtering ventilation board with strong electromagnetic shielding capability includes a predetermined frame, wherein a first filter plate 2 and a second filter plate 3 are sequentially arranged inside a fixed frame 1 from outside to inside, in this embodiment, the first filter plate 2 and the second filter plate 3 are arranged inside the fixed frame 1, so that when external electromagnetic waves pass through a ventilation opening of an electromagnetic shielding body, the electromagnetic strength of the external electromagnetic waves can be weakened and shielded by the first filter plate 2 and the second filter plate 3, the external electromagnetic waves can be effectively prevented from entering the electromagnetic shielding body from the ventilation opening to affect the normal operation of internal electronic equipment, and the electromagnetic shielding capability of the filtering ventilation board is improved; the first filter plate 2 and the second filter plate 3 of the embodiment are respectively provided with a plurality of first honeycomb holes 21 and second honeycomb holes 31 for ventilation, wherein the first honeycomb holes 21 and the second honeycomb holes 31 have excellent mechanical and electromagnetic properties, can effectively block electromagnetism of a ventilation opening, and ensure normal operation of electronic equipment in an electromagnetic shielding body; the first honeycomb holes 21 and the second honeycomb holes 31 of the embodiment are arranged in a staggered manner, so that the pore diameters of the first honeycomb holes 21 and the second honeycomb holes 31 for ventilation are reduced, the ventilation of the embodiment is realized, and meanwhile, the space for communicating the inside of the electromagnetic shielding body with the outside is further reduced, and the electromagnetic shielding capability of the embodiment is further improved;
in the embodiment, the installation groove 11 is further formed in the inner side wall of the fixed frame 1, and the dustproof pad 4 is installed in the installation groove 11, so that dust passing through the filtering ventilation plate along with wind can be blocked on the dustproof pad 4, the normal work of electronic equipment in the electromagnetic shield is prevented from being influenced, the electronic equipment can be prevented from being damaged, and the service life is prolonged; the mounting groove 11 of this embodiment sets up the intermediate position at fixed frame 1 inside wall, makes dustproof 4 installation back centre gripping between first filter plate 2 and second filter plate 3, and the steadiness is good, can use in the anti vibration environment, has enlarged the application range of this embodiment.
As shown in fig. 3 and 4, the cross section of the fixed frame 1 of the present embodiment is "Contraband" shaped structure, and includes two frame strips 12 that are spliced with each other, and the cross section of the frame strips 12 is "L" shaped structure, four sides of the first filter plate 2, the dust-proof pad 4, and the second filter plate 3 of the present embodiment are respectively embedded in the frame strips 12 for installation and fixation, so that the first filter plate 2, the dust-proof pad 4, and the second filter plate 3 can be taken out by detaching the frame strips 12, which is convenient for the present embodiment to update and maintain the first filter plate 2, the dust-proof pad 4, and the second filter plate 3; meanwhile, the fixed frame 1 is arranged in a form that the two frame strips 12 are spliced and combined, so that the production and the processing are facilitated, and the production efficiency can be improved;
the both ends junction of the frame strip 12 of this embodiment all is equipped with connecting block 121 and spread groove 122, and this embodiment accessible is pegged graft the connecting block 121 of frame strip 12 one end in the spread groove 122 of another frame strip 12, and the equipment splices into the fixed frame 1 of completion, and the dismouting is convenient.
Meanwhile, in order to make the combination splicing of the two frame strips 12 more firm, the fixing hole 13 is arranged at the four corners of the end surface of the fixing frame 1 in the embodiment, and the fixing hole 13 penetrates through the connecting block 121 and the connecting groove 122 in sequence and penetrates through to the other end surface of the fixing frame 1, so that after the two frame strips 12 of the embodiment are assembled into the fixing frame 1, the connecting block 121 and the connecting groove 122 can be strengthened in a mode that a bolt is inserted into the fixing hole 13, the combination splicing of the two frame strips 12 is further strengthened, and meanwhile, the filtering ventilation plate of the embodiment can be fixedly installed at the vent of the electromagnetic shielding body through the fixing hole 13.
As shown in fig. 1, 3 and 4, the first honeycomb holes 21 of the present embodiment are inclined toward the lower part of the outer side of the fixed frame 1, so that the first honeycomb holes 21 on the first filter plate 2 form a structure similar to a louver, when rainwater falls on the first filter plate 2 located at the outer side of the fixed frame 1, the rainwater will slide out of the electromagnetic shield along the surface of the first honeycomb holes 21, thereby preventing the rainwater from entering the electromagnetic shield from the ventilation opening, and providing the present embodiment with a good rainwater-proof capability;
the inclination angle of the first honeycomb holes 21 is 0-90 degrees, so that the first honeycomb holes 21 can be ensured to incline towards the outer side of the electromagnetic shielding body, and rainwater can not enter the electromagnetic shielding body from the first honeycomb holes 21; the inclination angle of the first honeycomb holes 21 of this embodiment is 60 °, and it can be guaranteed that rainwater dropping on the first filter plate 2 can quickly slide to the ground along the surfaces of the first honeycomb holes 21.
As shown in fig. 2, 3 and 4, the end surface of the fixing frame 1 close to the second filter plate 3 of the present embodiment is provided with a screen slot, and the shield wire mesh 5 is installed in the shield slot 14 in the present embodiment, so that when the filter ventilation plate of the present embodiment is installed on the vent, the gap at the joint of the filter ventilation plate and the vent can be electromagnetically shielded through the shield wire mesh 5, and the electromagnetic shielding capability of the present embodiment is further improved.
The shielding silk screen 5 outside of this embodiment is pasted all around and is had rubber foam-rubber cushion 6, can prevent that the dust from filtering ventilation board and the clearance of vent being connected from getting into the electromagnetic shield inside, has further promoted the dustproof ability of this embodiment.
The working principle of the embodiment is as follows: in the embodiment, the first filter plate 2 and the second filter plate 3 are arranged in the fixed frame 1, and the first honeycomb holes 21 and the second honeycomb holes 31 are arranged in a staggered manner, so that when external electromagnetic waves pass through the ventilation opening of the electromagnetic shielding body, the electromagnetic strength of the external electromagnetic waves can be weakened and shielded by the first filter plate 2 and the second filter plate 3, the external electromagnetic waves can be effectively prevented from entering the electromagnetic shielding body from the ventilation opening to influence the normal work of internal electronic equipment, and the electromagnetic shielding capability of the filter ventilation plate is improved;
the installation groove 11 is formed in the inner side of the fixed frame 1, so that dust can be prevented from entering the electromagnetic shielding body from the air vent by installing the dust-proof pad 4 in the installation groove 11, the dust-proof capability of the embodiment is improved, the dust-proof pad 4 is clamped between the first filter plate 2 and the second filter plate 3 after being installed, the stability is good, and the dust-proof device can be used in a vibration-proof environment;
through setting up the fixed frame 1 that the cross-section is "Contraband" shape structure to make fixed frame 1 form by two mutual concatenations, make this embodiment accessible dismantle the mode of frame strip 12 and take out first filtering board 2, dustproof pad 4 and second filtering board 3 fast and update and the maintenance and be convenient for production and processing, can improve production efficiency.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and modifications made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (6)
1. The utility model provides a filtering ventilation board that electromagnetic shield ability is strong, includes fixed frame, its characterized in that: the filter also comprises a first filter plate and a second filter plate which are arranged in the fixed frame from outside to inside in sequence, a plurality of first honeycomb holes and second honeycomb holes are respectively arranged on the first filter plate and the second filter plate, the first honeycomb holes and the second honeycomb holes are arranged in a staggered manner,
be equipped with the mounting groove on the fixed frame inside wall, fixed mounting has dustproof the pad in the mounting groove, dustproof the pad is located between first filtering board and the second filtering board.
2. The filter ventilation board with strong electromagnetic shielding capability according to claim 1, wherein: the fixed frame cross-section is "Contraband" shape structure, includes two frame strips of splicing each other, two frame strip cross-section is "L" shape structure, and frame strip both ends concatenation punishment do not is equipped with connecting block and spread groove, the connecting block gomphosis is in the spread groove.
3. The filter ventilation board with strong electromagnetic shielding capability according to claim 2, wherein: the four corners of the end face of the fixed frame are provided with fixed holes used for installing and strengthening the connection strength of the frame strips, and the fixed holes penetrate through the connecting blocks and the connecting grooves.
4. The filter ventilation board with strong electromagnetic shielding capability according to claim 1, wherein: the first honeycomb holes incline towards the lower part of the outer side of the fixed frame, and the inclination angle is 0-90 degrees.
5. The filter ventilation board with strong electromagnetic shielding capability according to claim 1, wherein: and a shielding groove is further formed in the end face of the inner side of the fixed frame, and a shielding wire mesh for shielding electromagnetic waves at a gap at a joint is embedded in the shielding groove.
6. The filter ventilation board with strong electromagnetic shielding capability according to claim 5, wherein: and a rubber sponge cushion is adhered to the periphery of the outer side of the shielding silk screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121342211.5U CN214852572U (en) | 2021-06-17 | 2021-06-17 | Filtering ventilation board with strong electromagnetic shielding capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121342211.5U CN214852572U (en) | 2021-06-17 | 2021-06-17 | Filtering ventilation board with strong electromagnetic shielding capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214852572U true CN214852572U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121342211.5U Active CN214852572U (en) | 2021-06-17 | 2021-06-17 | Filtering ventilation board with strong electromagnetic shielding capability |
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| Country | Link |
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| CN (1) | CN214852572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114630539A (en) * | 2022-02-28 | 2022-06-14 | 衡阳泰豪通信车辆有限公司 | Outdoor case with ventilation and rainproof functions |
-
2021
- 2021-06-17 CN CN202121342211.5U patent/CN214852572U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114630539A (en) * | 2022-02-28 | 2022-06-14 | 衡阳泰豪通信车辆有限公司 | Outdoor case with ventilation and rainproof functions |
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