Foreign matter prevention filtering structure for ventilation opening of mainframe box
By designing dustproof and support mechanisms, a foreign object filtering structure for the main unit's ventilation openings was achieved, solving the problems of increased airflow resistance and low heat dissipation efficiency of existing filter plates, and realizing automatic adjustment and efficient heat dissipation under different working conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 程德彬
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-24
AI Technical Summary
The existing filter plates of the main unit's ventilation vents increase airflow resistance during high-load operation, affecting heat dissipation efficiency, and are difficult to effectively block foreign objects such as dust and hair.
A dustproof mechanism and a support mechanism were designed. Through the cooperation of rotating column, rotating block and insert block, the filter screen can be quickly installed and rotated. By using magnet and support wheel, the filter screen can be automatically adjusted to adapt to different working conditions.
When the main unit is not working, it effectively blocks foreign objects such as dust and hair. When running under high load, it automatically adjusts the position of the filter to ensure that the heat dissipation efficiency is not affected.
Smart Images

Figure CN224163937U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chassis technology, specifically to a foreign object filtering structure for the ventilation opening of a main chassis. Background Technology
[0002] As a computer component, the main function of the computer case is to house and secure the various computer components, providing support and protection. In order to ensure the heat dissipation efficiency inside the computer case, ventilation openings are provided.
[0003] In existing technologies, the heat dissipation vents of the host are usually located at the top. When the host is not working, in order to prevent impurities in the environment from passing through the heat dissipation vents and entering the host, it is necessary to block foreign objects such as dust, hair, and fibers. The current mainstream design uses metal or plastic filter plates fixed with screws to cover the vents. However, in actual use, in order to effectively block impurities, the diameter of the through holes of the filter plate is small. Although such dense through holes can effectively intercept foreign objects such as dust and hair, when the host is running under continuous high load, the temperature inside the host is high. Since the filter plate is always limited to the top of the host by screws, the narrow gaps of the filter plate significantly increase the airflow resistance, which is not conducive to the heat dissipation of the host that has been working for a long time. Therefore, it is necessary to improve the host chassis vent foreign object filtering structure to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a foreign object filtering structure for the ventilation opening of a main unit chassis to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a host chassis ventilation port anti-foreign object filtering structure, including a host chassis, a support leg fixedly installed at the bottom of the host chassis, a heat dissipation vent at the top of the host chassis, a dustproof mechanism at the top of the host chassis, and a support mechanism inside the dustproof mechanism.
[0006] Preferably, the dustproof mechanism includes a support base, which is fixedly installed on the top of the main unit housing. A rotating column is rotatably installed inside the support base. Rotating blocks are fixedly installed at both ends of the rotating column. Screws are movably installed inside the rotating blocks. A crossbar is fixedly installed on the front of the rotating blocks. A guide block is fixedly installed on the inner side of the crossbar. A connecting frame is slidably installed on the inner side of the crossbar. A filter screen is fixedly installed on the inner wall of the connecting frame. An insert block is fixedly installed on the back of the connecting frame to facilitate the installation of the filter screen and to facilitate the blocking of impurities.
[0007] Preferably, a groove is provided inside the connecting frame at the position corresponding to the guide block, and the guide block is slidably installed in the groove, which facilitates the positioning and limiting of the connecting frame.
[0008] Preferably, a through groove is provided inside the rotating block at the position corresponding to the insertion block, and the insertion block is slidably installed in the through groove to facilitate the positioning of the insertion block.
[0009] Preferably, the insert has a threaded hole at the position corresponding to the screw, and the screw is threaded into the threaded hole to facilitate the limiting operation of the insert and the connecting frame.
[0010] Preferably, the support mechanism includes a rotating rod, which is rotatably installed inside the crossbar. A support wheel is rotatably installed inside the rotating rod. A placement groove is opened inside the crossbar, and a magnet is fixedly installed inside the placement groove. A pull block is fixedly installed on the top of the crossbar to facilitate the limiting and support of the crossbar.
[0011] Preferably, the crossbar has a through groove inside, and the rotating rod is slidably installed in the through groove to facilitate the rotation of the rotating rod.
[0012] Compared with the prior art, this utility model provides a foreign object filtering structure for the main unit chassis ventilation port, which has the following beneficial effects:
[0013] 1. The host chassis ventilation vent foreign object filtering structure, through the set dustproof mechanism, during use, the set guide block facilitates the initial positioning and limitation of the connecting frame, and facilitates the insertion block to slide into the through groove opened inside the rotating block. With the cooperation of screws, it is easy to quickly install the connecting frame. The set filter screen facilitates the blocking of heat dissipation vents. When the host is not working, it blocks foreign objects such as dust and hair in the air. The set rotating column facilitates the rotation of the rotating block, thereby facilitating the rotation of the connecting frame, so as to move the filter screen away from the heat dissipation vents, which is convenient for heat dissipation when the host is running under continuous high load.
[0014] 2. The main unit's ventilation vent anti-foreign object filter structure, through its support mechanism, uses magnets to limit the movement of the crossbar during use, ensuring that the crossbar contacts the top of the main unit's casing, thus facilitating the blocking of impurities. A pull block allows the crossbar to rotate, and after rotating the crossbar more than 90 degrees, the support wheel contacts the top of the main unit's casing, further supporting the crossbar and keeping the filter away from the heat dissipation vent, facilitating heat dissipation during continuous high-load operation of the main unit. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the front structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the dustproof mechanism of this utility model;
[0018] Figure 3 This is a schematic diagram showing the positional relationship of the insert blocks in this utility model;
[0019] Figure 4 This is a schematic diagram of the support mechanism structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the tilted state of the rotating rod of this utility model.
[0021] In the diagram: 1. Main unit chassis; 2. Support leg; 3. Heat dissipation vent; 4. Dustproof mechanism; 401. Support base; 402. Rotating column; 403. Rotating block; 404. Screw; 405. Crossbar; 406. Guide block; 407. Connecting frame; 408. Filter screen; 409. Insert block; 5. Support mechanism; 501. Rotating rod; 502. Support wheel; 503. Placement slot; 504. Magnet; 505. Pull block. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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 utility model according to the specific circumstances.
[0024] Example 1:
[0025] Please see Figure 1-3 This utility model provides a technical solution: a host chassis ventilation port anti-foreign object filtering structure, including a host chassis 1, a support leg 2 fixedly installed at the bottom of the host chassis 1, a heat dissipation port 3 opened at the top of the host chassis 1, a dustproof mechanism 4 provided at the top of the host chassis 1, and a support mechanism 5 provided inside the dustproof mechanism 4.
[0026] Furthermore, the dustproof mechanism 4 includes a support base 401, which is fixedly installed on the top of the main unit chassis 1. A rotating column 402 is rotatably installed inside the support base 401. Rotating blocks 403 are fixedly installed at both ends of the rotating column 402. Screws 404 are movably installed inside the rotating blocks 403. A crossbar 405 is fixedly installed on the front of the rotating blocks 403. A guide block 406 is fixedly installed on the inner side of the crossbar 405. A connecting frame 407 is slidably installed on the inner side of the crossbar 405. The bottom of the connecting frame 407 contacts the top of the main unit chassis 1. A filter screen 408 is fixedly installed on the inner wall of the connecting frame 407. The size of the filter screen 408 is slightly larger than the distribution area of the heat dissipation vents 3 to facilitate the covering of the heat dissipation vents 3. The connecting frame 407 has a fixed insert block 409 on its back. The guide block 406 facilitates the initial positioning and limiting of the connecting frame 407, allowing the insert block 409 to slide into the through slot inside the rotating block 403. With the help of the screw 404, the connecting frame 407 can be quickly installed. The filter screen 408 can cover the heat dissipation vent 3, blocking dust, hair and other foreign objects in the air when the host is not working. The rotating column 402 facilitates the rotation of the rotating block 403, which in turn facilitates the rotation of the connecting frame 407, allowing the filter screen 408 to be moved away from the heat dissipation vent 3, thus facilitating heat dissipation when the host is running under continuous high load.
[0027] Furthermore, a groove is provided inside the connecting frame 407 at the position corresponding to the guide block 406, and the guide block 406 is slidably installed in the groove, which facilitates the positioning of the connecting frame 407 and ensures that the bottom of the connecting frame 407 is in contact with the main unit housing 1.
[0028] Furthermore, a through groove is provided inside the rotating block 403 at the position corresponding to the insertion block 409, and the insertion block 409 is slidably installed in the through groove, which facilitates the positioning of the insertion block 409 and the subsequent limiting of the connecting frame 407.
[0029] Furthermore, the insert 409 has a threaded hole at the position corresponding to the screw 404, and the screw 404 is threaded into the threaded hole, which facilitates the limiting of the insert 409 and thus enables the quick installation of the connecting frame 407.
[0030] Please see Figure 4-5Furthermore, in conjunction with Embodiment 1, the support mechanism 5 includes a rotating rod 501, which is rotatably mounted inside the crossbar 405. A support wheel 502 is rotatably mounted inside the rotating rod 501. A placement groove 503 is provided inside the crossbar 405, and a magnet 504 is fixedly mounted inside the placement groove 503. The bottom of the magnet 504 is flush with the bottom of the crossbar 405, ensuring that the crossbar 405 contacts the main unit housing 1. A pull block 505 is fixedly mounted on the top of the crossbar 405 to facilitate the limiting and support of the crossbar 405. The magnet 504 is positioned to limit the movement of the crossbar 405, ensuring that the crossbar 405 contacts the top of the main unit housing 1, thus facilitating the blocking of impurities. The pull block 505 facilitates the rotation of the crossbar 405, thereby facilitating the rotation of the rotating rod 501. After the rotating rod 501 is rotated more than 90 degrees, the support wheel 502 contacts the top of the main unit housing 1, thus facilitating the support of the crossbar 405 and keeping the filter screen 408 away from the heat dissipation vent 3, which is beneficial for heat dissipation when the main unit is running under continuous high load.
[0031] Furthermore, a through groove is provided inside the crossbar 405, and the rotating rod 501 is slidably installed in the through groove. An inclined groove is provided on the front of the through groove. As the rotating rod 501 rotates, the rotating rod 501 contacts the inclined groove. The rotation angle of the rotating rod 501 is greater than 90 degrees, which facilitates the rotation of the rotating rod 501 and makes it convenient to support the crossbar 405.
[0032] In actual operation, when this device is used, the connecting frame 407 is slid outside the guide block 406 to initially position and limit the connecting frame 407. Pushing the connecting frame 407 causes the insert block 409 to slide into the through slot inside the rotating block 403, completing the positioning of the insert block 409. With the cooperation of the screw 404, the insert block 409 is limited, thus completing the installation of the connecting frame 407. This allows the filter screen 408 to block the heat dissipation vent 3, preventing foreign objects from falling into the interior of the main unit casing 1. The magnet 5... With the cooperation of 04, the crossbar 405 is always in contact with the top of the main unit housing 1. When the main unit is running under continuous high load, by pulling the pull block 505, with the cooperation of the support base 401, the rotating column 402 and the rotating block 403, the crossbar 405 and the connecting frame 407 are rotated. After the rotating rod 501 is rotated, the support wheel 502 contacts the top of the main unit housing 1, thereby supporting the rotated crossbar 405 and keeping the filter screen 408 away from the heat dissipation port 3, which facilitates heat dissipation when the main unit is running under continuous high load.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A foreign object filtering structure for a main unit chassis ventilation opening, comprising a main unit chassis (1), characterized in that: The bottom of the main unit housing (1) is fixedly installed with a support leg (2), the top of the main unit housing (1) is provided with a heat dissipation vent (3), the top of the main unit housing (1) is provided with a dustproof mechanism (4), and the inside of the dustproof mechanism (4) is provided with a support mechanism (5). The dustproof mechanism (4) includes a support base (401), which is fixedly installed on the top of the main unit housing (1). A rotating column (402) is rotatably installed inside the support base (401). A rotating block (403) is fixedly installed at both ends of the rotating column (402). A screw (404) is movably installed inside the rotating block (403). A crossbar (405) is fixedly installed on the front of the rotating block (403). A guide block (406) is fixedly installed on the inner side of the crossbar (405). A connecting frame (407) is slidably installed on the inner side of the crossbar (405). A filter screen (408) is fixedly installed on the inner wall of the connecting frame (407). An insert block (409) is fixedly installed on the back of the connecting frame (407).
2. The host chassis ventilation port foreign object filtering structure according to claim 1, characterized in that: The connecting frame (407) has a groove at the position corresponding to the guide block (406), and the guide block (406) is slidably installed in the groove.
3. The host chassis ventilation port foreign object filtering structure according to claim 1, characterized in that: The inside of the rotating block (403) is provided with a through groove at the corresponding position of the insert block (409), and the insert block (409) is slidably installed in the through groove.
4. The host chassis ventilation port foreign object filtering structure according to claim 1, characterized in that: The insert (409) has a threaded hole at the position corresponding to the screw (404), and the screw (404) is threadedly installed in the threaded hole.
5. The host chassis ventilation port foreign object filtering structure according to claim 1, characterized in that: The support mechanism (5) includes a rotating rod (501), which is rotatably installed inside the crossbar (405). A support wheel (502) is rotatably installed inside the rotating rod (501). A placement groove (503) is opened inside the crossbar (405). A magnet (504) is fixedly installed inside the placement groove (503). A pull block (505) is fixedly installed on the top of the crossbar (405).
6. The host chassis ventilation port foreign object filtering structure according to claim 5, characterized in that: The crossbar (405) has a through groove inside, and the rotating rod (501) is slidably installed in the through groove.