Novel waterproof mechanism for sheet metal cabinet
By designing a combination of receiving grooves, flow guiding areas, drainage holes, and air vents in the sheet metal cabinet, the problems of insufficient sealing and drainage in traditional sheet metal cabinets are solved, achieving better waterproofing and ensuring safe and stable operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO HECHENGYUAN PRECISION TECH CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional sheet metal cabinets are inadequate in terms of sealing and drainage, allowing moisture to seep into the cabinet, damaging the equipment and affecting its normal operation.
A novel waterproof mechanism has been designed, which includes a receiving groove and a diversion area at the connection between the cabinet and the door, and uses rubber sealing strips and absorbent cotton, combined with drainage holes and air vents, to achieve sealing, drainage and air pressure balance, thereby enhancing waterproof performance.
It significantly improves the waterproof performance of sheet metal cabinets, ensures the safe and stable operation of internal equipment, reduces the probability of failure, and extends the service life of equipment.
Smart Images

Figure CN224139277U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of novel waterproof mechanisms for sheet metal cabinets, and more particularly to a novel waterproof mechanism for sheet metal cabinets. Background Technology
[0002] Sheet metal cabinets are widely used in many fields such as industrial production and data storage to house various electronic devices and instruments. However, traditional sheet metal cabinets have many shortcomings in terms of waterproofing.
[0003] On the one hand, the connection between the cabinet and the door is often poorly sealed. Most traditional cabinets only use simple sealing measures, such as ordinary rubber strips. During long-term use, these rubber strips are prone to aging and deformation due to external environmental factors (such as temperature changes and mechanical vibrations), leading to a decline in sealing performance and an inability to effectively prevent moisture from entering. Once moisture intrudes, it may cause short circuits and corrosion of internal electronic components, thereby damaging the equipment, affecting its normal operation, and increasing maintenance costs and downtime.
[0004] On the other hand, when water enters the cabinet, there is a lack of a reasonable and effective drainage and drainage mechanism. Traditional cabinets do not have a specially designed drainage structure, so water cannot be discharged in time and can only accumulate inside the cabinet, further increasing the risk of damage to the equipment. Moreover, the air pressure difference between the inside and outside of the cabinet can also affect waterproofing. If the air pressure is unbalanced, airflow may be created when the door is opened or closed, bringing external moisture or humidity into the cabinet. Utility Model Content
[0005] In view of this, the technical problem to be solved by this utility model is: how to provide a new waterproof mechanism for sheet metal cabinets to improve the waterproof performance of sheet metal cabinets and ensure the safe and stable operation of internal equipment.
[0006] To achieve the above objectives, this utility model proposes a novel waterproof mechanism for sheet metal cabinets, which includes a cabinet body and a sealing strip.
[0007] The cabinet is used to assemble the door, and the door is rotatably connected to the cabinet, so that the interior of the cabinet can be opened or closed by rotating the door;
[0008] The cabinet body has a receiving groove on the side facing the door. The receiving groove is recessed on the end face of the cabinet body. The sealing strip is fitted into the receiving groove. The height of the side wall of the receiving groove facing inward is greater than the height of the side wall of the receiving groove away from inward.
[0009] A flow guiding area is formed at the four corners of the cabinet. The flow guiding area is located on the periphery of the receiving groove and away from the inside of the cabinet. Drainage holes and air guide holes are provided in the flow guiding area. The drainage holes and air guide holes are arranged side by side. The diameter of the drainage hole is larger than that of the air guide hole.
[0010] A water-absorbing cotton is attached to the surface of the flow guiding area, and the water-absorbing cotton is provided with through holes corresponding to the drain hole and the air guiding hole.
[0011] Furthermore, the drain hole and the air vent are provided through the cabinet.
[0012] Furthermore, the sealing strip is made of rubber and is attached to the receiving groove by adhesive.
[0013] Furthermore, the receiving slot is arranged around the cabinet.
[0014] Furthermore, the difference between the height of the sidewall facing inward and the height of the sidewall away from inward in the receiving groove is in the range of 2mm-5mm.
[0015] Compared with related technologies, this utility model proposes a novel waterproof mechanism for sheet metal cabinets. Its advantages include: the cabinet body cooperates with a rotating door, allowing the cabinet interior to be opened or closed by rotating the door. A surrounding receiving groove is provided on the side of the cabinet facing the door, fitted with a rubber sealing strip. The two side walls of the receiving groove have different heights, resulting in a tighter fit with the door and enhancing the sealing effect, effectively preventing external moisture from entering the interior through the gap between the cabinet and the door. A drainage zone is provided at each of the four corners of the cabinet, located outside the receiving groove and away from the interior. This zone contains drainage holes and vent holes, with the drainage holes having a larger diameter than the vent holes, and both running parallel through the cabinet. When a small amount of moisture breaks through the sealing strip, it can be discharged through the drainage holes, while the vent holes balance the internal and external air pressure, preventing drainage from being affected by air pressure issues or moisture from being sucked in. Absorbent cotton is attached to the surface of the drainage zone, and the absorbent cotton has corresponding through holes to further absorb residual moisture, preventing its accumulation and providing secondary waterproof protection, reducing the risk of moisture erosion to the internal equipment. This waterproofing mechanism works synergistically in sealing, drainage, air pressure balancing, and moisture adsorption to significantly improve the waterproof performance of sheet metal cabinets, ensuring the safe and stable operation of equipment inside the cabinets, extending equipment lifespan, and reducing the probability of failures caused by water ingress. Attached Figure Description
[0016] Figure 1 This is a structural schematic diagram of a novel waterproof mechanism for sheet metal cabinets in an embodiment of this utility model;
[0017] Figure 2 for Figure 1 Schematic diagram of the structure along section AA;
[0018] Figure 3 This is a partially enlarged schematic diagram of the novel waterproof mechanism for sheet metal cabinets in an embodiment of this utility model. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0020] Please see Figure 1-3 As shown, this utility model proposes a novel waterproof mechanism for sheet metal cabinets, which includes a cabinet body 11 and a sealing strip 21.
[0021] The cabinet 11 is used to assemble the door, and the door is rotatably connected to the cabinet 11. The rotation of the door enables the opening or closing of the interior of the cabinet 11.
[0022] A receiving groove 12 is provided on the side of the cabinet 11 facing the door. The receiving groove 12 is provided around the cabinet 11 and is formed in a recessed manner on the end face of the cabinet 11. A sealing strip 21 is installed in the receiving groove 12. The sealing strip 21 is made of rubber and is installed in the receiving groove 12 by adhesive.
[0023] The height dimension of the sidewall facing inward on the receiving groove 12 is greater than the height dimension of the sidewall away from inward on the receiving groove 12. The difference between the height dimension of the sidewall facing inward on the receiving groove 12 and the height dimension of the sidewall away from inward on the receiving groove 12 is in the range of 2mm-5mm.
[0024] The purpose of the receiving groove 12 is mainly to install the sealing strip 21 and enhance the waterproof effect. The receiving groove 12 is set around the cabinet 11, which can provide a precise installation position for the sealing strip 21, ensuring that the sealing strip 21 can fully cover the gap between the cabinet 11 and the door when the door is closed, thus preventing moisture from entering the interior of the cabinet 11 at the source.
[0025] The recessed receiving groove 12 is set on the end face of the cabinet 11. This structural design ensures that the sealing strip 21 remains relatively flat with the surface of the cabinet 11 after installation. This not only does not affect the normal rotation of the door, but also allows the sealing strip 21 to fit tightly against the door when it is closed, forming an effective waterproof barrier. Secondly, the height difference between the two side walls of the receiving groove 12 enhances the waterproof performance.
[0026] With a height difference between 2-5mm, the side wall on the higher side exerts stronger pressure on the sealing strip 21 when the door is closed, making the sealing strip 21 fit more tightly against the door and further preventing moisture intrusion. In addition, the receiving groove 12, in conjunction with the guide area at the corner of the cabinet 11, guides the water flow into the guide area when a small amount of water breaks through the sealing strip 21 and enters, and discharges it through the drain hole 13, achieving a complete waterproof circulation and ensuring the safety of the equipment inside the cabinet 11.
[0027] A flow guiding area is formed at the four corners of the cabinet 11. The flow guiding area is located on the outer side of the receiving groove 12 and away from the inside of the cabinet 11. Drainage holes 13 and air guide holes 14 are provided in the flow guiding area. The drainage holes 13 and air guide holes 14 are provided through the cabinet 11 and are arranged side by side. The diameter of the drainage hole 13 is larger than that of the air guide hole 14.
[0028] The purpose of providing the drain hole 13 is to allow any small amount of moisture to be drained from the cabinet 11 when it breaks through the sealing strip 21 and enters the cabinet 11, thus preventing moisture from accumulating inside the cabinet 11 and damaging the internal equipment. The drain hole 13 has a large diameter, which can quickly and effectively drain accumulated water and ensure that the inside of the cabinet 11 remains dry.
[0029] The purpose of the vent 14 is to balance the air pressure inside and outside the cabinet 11. During actual use, the air pressure inside the cabinet 11 will change due to factors such as temperature variations and the opening and closing of the cabinet door. If the internal and external air pressures are unbalanced, external moisture or water may be drawn into the cabinet 11 when the door is opened; when the door is closed, the internal air pressure may force open the sealing strip 21, reducing the sealing effect. The vent 14, by communicating with the outside air, balances the air pressure and effectively avoids these problems.
[0030] The height difference strengthens the first line of defense against water damage, reducing the possibility of moisture ingress; the vent 14 prevents air pressure issues from compromising the existing seal. For example, when the outside temperature rises, the air inside the cabinet 11 expands. Without the vent 14, the increased internal air pressure might push open the sealing strip 21, allowing moisture to enter. The vent 14, however, balances the air pressure in time, ensuring the sealing strip 21 remains tightly sealed. Simultaneously, the combination of these two elements also aids in drainage.
[0031] When water is discharged through the drain hole 13, the air guide hole 14 balances the air pressure, making the drainage process smoother and not obstructed by air pressure issues, thus protecting the internal equipment of the sheet metal cabinet from water damage in all aspects.
[0032] Absorbent cotton is attached to the surface of the guide zone, and through holes corresponding to the drain hole 13 and the air guide hole 14 are provided on the absorbent cotton.
[0033] The cabinet 11 is fitted with a rotating door, which can be rotated to open or close the interior of the cabinet 11. A surrounding receiving groove 12 is provided on the side of the cabinet 11 facing the door, and a rubber sealing strip 21 is fitted thereon. The two side walls of the receiving groove 12 have different heights, which, due to the height difference, allows for a tighter fit with the door, enhancing the sealing effect and effectively preventing external moisture from entering the interior through the gap between the cabinet 11 and the door. A drainage zone is provided at each of the four corners of the cabinet 11, located outside the receiving groove 12 and away from the interior of the cabinet 11. This zone contains a drain hole 13 and a vent hole 14. The diameter of the drain hole 13 is larger than that of the vent hole 14, and both holes run parallel through the cabinet 11.
[0034] When a small amount of moisture penetrates the sealing strip 21, it can be discharged through the drain hole 13. The vent hole 14 balances the internal and external air pressure, preventing air pressure issues from affecting drainage or causing moisture to be drawn in. Absorbent cotton is attached to the surface of the drainage area, and the absorbent cotton has corresponding through-holes to further absorb residual moisture, preventing its accumulation and providing secondary waterproof protection, reducing the risk of moisture corrosion to the equipment inside the cabinet 11. This waterproof mechanism, through the synergistic effects of sealing, drainage, air pressure balance, and moisture absorption, significantly improves the waterproof performance of the sheet metal cabinet, ensuring the safe and stable operation of the equipment inside, extending equipment lifespan, and reducing the probability of malfunctions caused by water ingress.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A new waterproof mechanism for sheet metal cabinets, characterized by, It includes the cabinet body and sealing strips; The cabinet is used to assemble the door, and the door is rotatably connected to the cabinet, so that the interior of the cabinet can be opened or closed by rotating the door; The cabinet body has a receiving groove on the side facing the door. The receiving groove is recessed on the end face of the cabinet body. The sealing strip is fitted into the receiving groove. The height of the side wall of the receiving groove facing inward is greater than the height of the side wall of the receiving groove away from inward. A flow guiding area is formed at the four corners of the cabinet. The flow guiding area is located on the periphery of the receiving groove and away from the inside of the cabinet. Drainage holes and air guide holes are provided in the flow guiding area. The drainage holes and air guide holes are arranged side by side. The diameter of the drainage hole is larger than that of the air guide hole. A water-absorbing cotton is attached to the surface of the flow guiding area, and the water-absorbing cotton is provided with through holes corresponding to the drain hole and the air guiding hole.
2. The novel waterproof mechanism for sheet metal cabinet as claimed in claim 1, wherein, The drain hole and the air vent are provided through the cabinet.
3. The novel waterproof mechanism for sheet metal cabinet as claimed in claim 1, wherein, The sealing strip is made of rubber and is attached to the receiving groove by adhesive.
4. The novel waterproof mechanism for sheet metal cabinet as claimed in claim 3, wherein, The receiving slot is arranged around the cabinet.
5. The novel waterproof mechanism for sheet metal cabinet as claimed in claim 3, wherein, The difference between the height of the sidewall facing inward and the height of the sidewall away from the interior of the receiving groove is in the range of 2mm-5mm.